LPCA 055-060-070-075-085-090-100-115 125-135-150-170HMB

LPCA 055-060-070-075-085-090-100-115
125-135-150-170HMB
PACKAGED AIR TO WATER HEAT PUMP
COOLING/HEATING
OUTDOOR INSTALLATION
Cooling Capacity: 188,2 kW - 597,9 kW
Heating Capacity: 216,7 kW - 677,5 kW
R407c - Tandem Scroll
The Interklima LPCA-HMB large capacitiy
series are packaged air cooled water heat
pumps for cooling and heating applications
and outdoor installation. They are available in
12 models with nominal capacities ranging
from 188,2 to 597,9 kW in cooling and 216,7
to 677,5 kW in heating.
This series is ideal in combination with
Interklima fan coil or air handling units for
office buildings, hotels, hospitals shopping
centers, restaurants, etc., or for supplying
water for industrial applications.
SCROLL
TAN DE M
Features
Optimized design for R407c refrigerant.
Casing:
Galvanized steel plate with polyesteric coating.
Assembly
Fully bolted/welding free.
Compressor:
Hermetically sealed tandem scroll type.
Air heat exchanger:
Cross fin coil
Internally grooved copper tubes and louvered aluminium fins.
Direct drive propeler fan
Low rpm, quiet operation.
Water heat exchanger
Shell and tube type
Safety and functional devices
- High/low pressure switch.
- Phase sequence - phase failure - reverse phase and voltage
monitoring device.
- Evaporator low temperature protection.
- Electronic microprocessor control with digital display.
- Differential water pressure switch.
- High / low pressure manometers.

NOMENCLATURE
1 Range
S-small M-mid L-large R-screw-series
2 Packaged Chiller Air-cooled
PCA
3 Model numbers
055-060-070-075-080-085-090-095-100-105-110-115-120-
125-135-140-150-160-170-190
4 Cool / Heat Model
R-cooling only H-heat pump
5 Compressor type
S-scroll M-tandem scroll R-reciprocating
T-twin screw
6 Refrigerant type
A-R22 B-R407c
7 Electrical Characteristic
-1 Single phase -Ommited Three phase

Contents
1. Technical Description
2. Specifications
3. Capacity Tables
4. Water Pressure
Drop Curves
5. Operation Range
6. Sound Data
7. Outlook Drawings
8. Refrigerant Circuit Diagrams
9. Wiring Diagrams
10. Installation
11. Guide Specifications
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 3

1. Technical Description
General
The LPCA-HMB series air-cooled water heat pumps consists of
12 models covering capacities from 188,2 up to 597,9 KW in
cooling and 216,7 up to 677,5kW in heatng.
It is the end result of a thorough study, and accurate design by
experienced Interklima research and development teams, to
develop a large size chiller series with compact shape, high
performance, and reliability of the highest quality standards.
This series meets the highest levels of aesthetic and technical
requirements using the latest technological innovations, including
environmentally friendly R407c that is chlorine free and has zero
ozone depletion potential. LPCA-HMB units are therefore ideal for
installation in urban environments due to their elegant design,
selected materials and low operating sound levels.
Casing
All units use metal parts fabricated from heavy gauge galvanized
steel sheets, formed to ensure maximum rigidity that guarantees and
preserves the units operation during the years. After fabrication these
are degreased, phosphatised, and electrostatically powder coated
with an epoxy-polyester RAL 9002 coating of a thickness 60-70 Ì.
This fully automatic process ensures superior corrosion resistance
against the most aggressive ambient conditions. The treatment can
successfully withstand a salt spray test of 500 hours, according to
ASTM B-117. All components are assembled together using bolts
thus avoiding the need for welding which may harm the galvanization
of the steel, and ensures that the whole assembly can fully withstand
adverse weather conditions
The compact footprint of the unit arises from detailed study and
design by our engineering teams and results in a machine, which
fits easily in restricted areas and is simple and easy to install and
maintain, and has been designed with special fittings for easy
transport and lifting.
Removable side panels are used to permit access only to
authorized personnel to internal components of the unit for
inspection and maintenance. Electrical and electronic equipment
and components for proper unit operation are located in a weather
proof (IP 55) electrical panel with access only via a special key.
Compressor
All units use low-noise, maintenance free, Hermetic Tandem Scroll
compressors with low vibration levels, specially optimized for use
with R407c refrigerant, selected from world class suppliers. They are
equipped with a crankcase electrical heater for the oil, and are
internally protected against potential overloading or electrical spikes.
The compressors are mounted on special antivibration rubber
mounts to eliminate vibration from the unit’s operation.
Air heat exchanger coil
All unit air heat exchangers are manufactured from high quality
copper inner grooved seamless tubes according to ASTM B-280,
having an outside diameter of 9,52 mm (3/8"). The fins are
manufactured from aluminium and form the secondary extended
heat transfer surface. The fins are continuous across the heat
exchanger and are fabricated in high precision dedicated press
lines. The fin surface is waffle formed, so as to increase the fin
rigidity, and has special louvers that help increase heat transfer. The
combination of internally grooved Copper-tubing and louvered fins
has resulted in a heat transfer performance 30% superior to that of
a conventional coil for this particular application. The assembly of
the finned pack is achieved by mechanical expansion of the tubes in
such a way as to form a perfect mechanical bond with the fins. For
this purpose, the fin holes have a peripheral extrusion (collar) of
adjustable height. This extrusion serves to define the distance
between fins (and consequently the total heat transfer surface) and
to ensure perfect contact of the fins to the tubes.
Alternative fin materials are available upon request such as epoxy
– coated aluminium or copper for applications in especially
aggressive environments.
Water heat exchanger
All units are equipped with a Shell and Tube water –direct
expansion type evaporator that has multiple cooling circuits, one
for each independent refrigerant circuit. The casing is of steel and
the internal tubes are of copper. There is an air vent valve, drain
valve, probes for water temperature sensors differential pressure
switch, and the whole heat exchanger is wrapped in a heavy
insulation material appropriate for external installation.
Air heat exchanger fans
All unit fans are of the axial type, three phase, 6 poles, internally
protected against potential overheating silent and suitable for
outdoor installation. Due to the sophisticated aerodynamic design
of the blades and inlet cones, as well as the perfect static and
dynamic balancing, their operation is completely vibration-free.
The fan–motor assembly has a protective grid against accidental
contact with moving parts, which is designed according to ISO
regulations. Fan motors are aerodynamically shaped so as not to
interfere with the airflow, and have permanently lubricated
bearings that do not require servicing. Continuous linear fan speed
regulation control is achieved according to coil temperatures
including fan silent mode operation. This optional feature for
Interklima LPCA units saves energy and reduces sound levels
dramatically, optimizing capacity.
4
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

Microprocessor controller
All units are equipped with an electronic programmable control
system. This allows complete management of all the functions of
the unit and ensures protection of all vital parts. It has a
diagnostics function, permitting easy and straightforward
understanding of all the possible failures and malfunctions of the
unit. All functions and indicators appear on the LCD screen. Over
150 programmable parameters offer complete unit management.
Critical parameters that require control are:
ñ Start-up shut down time of compressor.
ñ Time delay.
ñ Protection against multiple start-up.
ñ Water pump time delay in reference to compressor operation.
ñ Inlet/outlet water temperature.
ñ Air heat exchanger temperature.
Controlled operational parameters
ñ Water temperature adjustment in the inlet side during summer
operation*.
ñ Water outlet temperature adjustment in summer operation**.
ñ Water temperature adjustment in the inlet side during winter
operation*.
ñ Water outlet temperature adjustment in winter operation*.
ñ Compressor capacity control.
Controlled fault parameters
ñ Low suction pressure per refrigerant circuit.
ñ High discharge pressure per refrigerant circuit.
ñ Compressor overload.
ñ Fan motor overload.
ñ Water pump overload.
ñ Flow switch fault.
ñ Water sensor error due to bad contact or sensor failure.
ñ Error reading in water outlet low temperature.
ñ Compressor operating hour reading.
In addition the control also includes
ñ Self diagnostic error of all electronic control sensors.
ñ Remote on/ off switch.
ñ Remote alarm indication capability.
ñ Remote cool/heat selector switch.
ñ History of operation points and fault codes**.
ñ Password access code.
Refrigerant circuit
The units have multiple refrigerant circuits depending on the size
one per tandem compressor.
Each circuit consists of the following:
ñ Thermal expansion valve.
ñ Filter drier with a replaceable core.
ñ Shut off valves.
ñ Two way solenoid valve.
ñ Sight glass for checking the liquid lines.
ñ 4-way reversing valve.
ñ Suction accumulator.
ñ Liquid receiver.
ñ Check valve.
ñ High and low pressure gauges for each refrigerant circuit,
easily viewed.
ñ Service valves.
ñ Unit protection is provided by a high pressure switch with
manual reset, low pressure protection is a low-pressure
switch with auto reset.
ñ Flexible refrigerant pipe on the compressor discharge and
suction lines to avoid vibration and noise.
Optional accessories
Microprocessor controller options
ñ BMS module interface kit for Bacnet, Lon Works and Trend
connection**.
ñ BMS interface kit for Modbus connection.
ñ Connection via internet using a device converting the Carel
protocol to 10Mb/s TCP/IP ethernet protocol**.
ñ Possibility to send and receive messages using a GSM
modem**.
ñ Communication card through RS232 / RS485 serial ports.
ñ Extended memory card for up to five thousands messages**.
ñ Extended memory card 1&2 MB**.
ñ Parallel chiller operation with standard controller for units
with a maximum of eight compressors**.
ñ Microprocessor parameter reprogramming card.
ñ Compressor running current**.
ñ Self diagnostic and adaptive control**.
Other unit accessories/option
ñ R407c or R22 refrigerant.
ñ Condenser fins made of copper or prepainted aluminum, and
Blygold treatment for corrosion protection.
ñ Glycol for chilled water temperature down to –5 o C.
ñ Continuous linear fan speed regulation.
ñ High pressure relief valve on compressor discharge.
ñ A-meter, V-meter.
ñ Compressor noise reduction jacket.
ñ Electrical board ventilation fan.
ñ Water heat exchanger antifreezing electrical heater.
ñ Other custom built options upon request.
* For models 055-085
** For models 090 – 170
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 5

2. Technical specifications
LPCA 055-170HMB
Type
Nominal cooling capacity
Nominal heating capacity
Construction
Compressor
Quantity
Capacity steps
Absorbed power
Nominal operating current
Maximum operating current
Condenser
Evaporator
Quantity
Water content
Max. Operating pressure
Connections
Nominal water flow
Water pressure drop
Minimum system water content
Fan
Quantity
Speed
Total air flow
Absorbed power
Nominal operating current
Maximum operating current
Electrical characteristics
Total absorbed power
Nominal operating current
Maximum operating current
Compressor carter resistance power
Power cables cross section per phase
Fuses
Voltage operating limits
Refrigerant circuit
Number of circuits
Expansion device
Refrigerant type
Noise level @ 5m
Dimensions
Shipping weight
kW
RT
Btu/h
kW
kcal/h
Material/Color
kW
A
A
l
Water side bar
Refrigerant side bar
Width
Length
Heigth
l/h
kpa
l
rpm
m3/h
kW
A
A
kW
A
A
kW
mm 2 A
V
dB(A)
mm
mm
mm
kg
LPCA-055
188,2
53.0
641.591
216,7
186.362
2(x2)
4
57,1/64,2
98,8/108,0
146.0
1
50.0
16
29
DN 100
32.370
31.7
1129
4
850
81.700
8.0
18.0
19.2
65,5/72,6
116,8/126,0
165
0.38
120
3x200
2
69
2.200
2.600
2.200
2.170
LPCA-060
214,6
61.0
731.591
246,0
211.560
2(x2)
4
65,0/72,6
110,7/121,4
164.0
1
50.0
16
29
DN 100
36.912
40.9
1288
4
850
81.700
8.0
18.0
19.2
73,0/80,6
128,0/139,4
183
0.48
150
3x200
2
69
2.200
2.600
2.200
2.310
LPCA-070
240,9
68.0
821.250
275,1
236.586
2(x2)
4
72,8/81,5
125,4/137,1
186.0
1
63.0
16
29
DN 100
41.435
29.0
1445
4
850
77.000
8.0
18.0
19.2
80,8/89,5
143,0/155,1
205
0.54
150
3x225
2
69
2.200
2.600
2.200
2.420
LPCA-075
267,3
76.0
911.250
304,2
261.612
2(x2)
4
80,6/90,3
140,2/152,8
208.0
1
63.0
16
29
DN 100
45.976
37.2
1604
4
850
77.000
8.0
18.0
19.2
88,6/98,3
158,0/170,8
227
0.6
185
3x250
2
69
2.200
2.600
2.200
2.470
LPCA-085
299,0
85.0
1.019.318
338,7
291.282
Galvanized steel / Light grey-beige (RAL 9002)
Tandem Scroll
2(x2)
4
88,4/98,9
153,6/168,0
229.0
1
58.0
16
29
DN 100
51.428
44.8
1794
4
850
75.000
8.0
18.0
19.2
96,4/106,9
171,0/186,0
248
0.6
240
3x300
2
69
2.200
2.600
2.200
2.660
LPCA-090
321,9
91.0
1.097.386
369,0
317.340
3(x2)
6
97,5/109,0
166,0/182,1
246.0
High capacity cross finned coil with internally grooved tubes and louvered fins
Shell and Tube
400V/3Ph/50Hz
360-440V
thermal expansion valve
R407c
1
88.0
16
29
DN 125
55.367
34.3
1931
6
850
115.400
12.0
27.0
28.8
109,5/121,0
193,0/209,1
275
0.72
300
3x400
3
72
2.200
3.900
2.200
3.510
LPCA-100
361,4
103.0
1.232.045
412.7
354.922
3(x2)
6
109,2/122,2
188,1/205,7
279.0
1
88.0
16
29
DN 125
62.161
42.3
2168
6
850
112.500
12.0
27.0
28.8
121,0/134,2
215,0/232,7
308
0.81
300
3x400
3
72
2.200
3.900
2.200
3.590
6
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

Type
Nominal cooling capacity
Nominal heating capacity
Construction
Compressor
Quantity
Capacity steps
Absorbed power
Nominal operating current
Maximum operating current
Condenser
Evaporator
Quantity
Water content
Max. Operating pressure
Connections
Nominal water flow
Water pressure drop
Minimum system water content
Fan
Quantity
Speed
Total air flow
Absorbed power
Nominal operating current
Maximum operating current
Electrical characteristics
Total absorbed power
Nominal operating current
Maximum operating current
Compressor carter resistance power
Power cables cross section per phase
Fuses
Voltage operating limits
Refrigerant circuit
Number of circuits
Expansion device
Refrigerant type
Noise level @ 5m
Dimensions
Shipping weight
kW
RT
Btu/h
kW
kcal/h
Material/Color
kW
A
A
l
Water side bar
Refrigerant side bar
Width
Length
Heigth
l/h
kpa
l
rpm
m3/h
kW
A
A
kW
A
A
kW
mm 2 A
V
dB(A)
mm
mm
mm
kg
LPCA-115
400.9
114.0
1.366.705
456.4
392.504
3(x2)
6
120,9/135,4
210,2/229,3
312.0
1
80.0
16
29
DN 125
68.955
38.3
2405
6
850
112.500
12.0
27.0
28.8
132,0/147,4
237,0/256,3
341
0.9
2x120
3x400
3
72
2.200
3.900
2.200
3.680
LPCA-125
448.4
127.0
1.528.636
508.1
436.966
3(x2)
6
132,6/148,4
230,4/252,0
343.5
1
134.0
16
29
DN 150
77.125
32.4
2690
6
850
112.500
12.0
27.0
28.8
144,0/160,4
257,0/279,0
372
0.9
2x150
3x400
72
2.200
3.900
2.200
4.010
LPCA-135
481.9
137.0
1.642.841
550.2
473.172
Tandem Scroll
4(x2)
8
145,6/162,9
250,9/274,3
372.0
1
134.0
16
29
DN 150
82.887
37.3
2891
8
850
154.000
16.0
36.0
38.4
400V/3Ph/50Hz
161,0/178,9
286,/310,3
410
1.08
2x150
3x500
LPCA-150
534.5
152.0
1.822.159
608.5
523.310
Galvanized steel / Light grey-beige (RAL 9002)
4(x2)
8
161,3/180,5
280,9/305,7
416.0
1
135.0
16
29
DN 150
91.934
45.6
3207
8
850
150.000
16.0
36.0
38.4
177,0/196,5
316,0/341,7
454
1.2
2x185
3x600
3
4
4
thermal expansion valve
R407c
74
2.200
5.200
2.200
4.790
74
2.200
5.200
2.200
4.890
LPCA-170
597.9
170.0
2.038.295
677.5
582.650
4(x2)
8
176,8/197,8
307,2/336,0
458.0
High capacity cross finned coil with internally grooved tubes & louvered fins
Shell and Tube
360-440V
1
114.0
16
29
DN 150
102.839
51.2
3587
8
850
150.000
16.0
36.0
38.4
192,0/213,8
343,0/372,0
496
1.2
2x240
3x600
4
74
2.200
5.200
2.200
5.240
NOTES
Nominal conditions are
as follows:
-entering/leaving chilled
water temperature
12/7 o C; ambient
35 o CDB (cooling).
-entering/leaving heated
water temperature
40/45 o C; ambient
7 o CDB/6 o CWB (heating)
-electrical installation
specifications are purely
indicative and nonbinding,
all connections
to the system and the
electrical installation must
be in full accordance with
all applicable national and
local codes.
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 7

Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll
8
3. Capacity tables
LPCA-055
LPCA-060
LPCA-070
LPCA-075
LPCA-085
LPCA-090
LPCA-100
LPCA-115
LPCA-125
LPCA-135
LPCA-150
LPCA-170
Water
outlet ÆC
Cooling
capacity
kW
Absorbed
power
kW
Current
A
Absorbed
power
kw
Current
A
Cooling
capacity
kW
Absorbed
power
kW
Current
A
Cooling
capacity
kW
Absorbed
power
kW
Current
A
Cooling
capacity
kW
Absorbed
power
kW
25 30 35 40 45
Current
A
Cooling
capacity
kW
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
5
7
10
197.6
213.1
238.2
225.6
243.5
272.1
255.1
275.6
308.7
284.5
307.8
345.3
315.9
341.8
383.6
338.4
365.2
408.2
382.6
413.5
463.1
426.8
461.7
518.0
473.9
512.7
575.4
510.2
551.3
617.5
569.1
615.6
690.7
631.9
683.5
767.2
45.2
45.4
45.7
51.7
51.9
52.0
58.2
58.5
59.0
64.7
65.2
65.9
70.9
71.4
72.2
77.6
77.8
78.0
87.3
87.8
88.4
97.1
97.8
98.8
106.4
107.1
108.3
116.5
117.1
117.9
129.5
130.3
131.8
141.8
142.8
144.3
83.9
84.0
84.1
93.4
93.6
94.1
107.0
107.3
107.8
120.5
120.9
121.6
130.8
131.3
132.1
140.1
140.5
141.1
160.5
160.9
161.8
180.8
181.4
182.4
196.1
196.9
198.2
214.0
214.6
215.7
241.1
241.9
243.2
261.5
262.5
264.3
186.0
200.9
224.9
212.3
229.4
256.9
238.9
258.5
290.1
265.6
287.7
323.4
296.2
320.7
360.5
318.4
344.0
385.3
358.4
387.8
435.2
398.4
431.6
485.1
444.3
481.1
540.7
477.9
517.1
580.3
531.2
575.5
646.8
592.4
641.5
721.0
50.7
50.8
51.0
57.8
58.1
58.4
64.9
65.2
65.6
71.9
72.3
72.9
78.9
79.2
79.9
86.7
87.1
87.6
97.3
97.8
98.4
107.9
108.4
109.3
118.3
118.9
119.8
129.7
130.3
131.3
143.8
144.6
145.8
157.8
158.5
159.7
90.7
90.8
90.9
101.2
101.5
101.9
115.3
115.5
116.0
129.3
129.6
130.1
141.0
141.4
142.1
151.9
152.2
152.8
172.9
173.3
174.0
194.0
194.4
195.2
211.5
212.1
213.1
230.5
231.1
232.0
258.6
259.2
260.3
282.0
282.8
284.2
174.0
188.2
211.1
198.3
214.6
240.9
222.3
240.9
271.0
246.3
267.3
301.1
275.6
299.0
336.7
297.4
321.9
361.4
333.4
361.4
406.5
369.5
400.9
451.6
413.4
448.4
505.1
444.6
481.9
542.0
492.6
534.5
602.2
551.2
597.9
673.4
57.0
57.1
57.2
64.7
65.0
65.4
72.5
72.8
73.3
80.4
80.6
81.1
88.2
88.4
88.9
97.1
97.5
98.2
108.8
109.2
109.9
120.6
120.9
121.6
132.2
132.6
133.3
145.1
145.6
146.5
160.8
161.3
162.2
176.3
176.8
177.8
98.6
98.8
98.9
110.5
110.7
111.1
125.2
125.4
125.8
140.0
140.2
140.5
153.3
153.6
154.1
165.7
166.0
166.6
187.8
188.1
188.7
209.9
210.2
210.8
230.0
230.4
231.2
250.5
250.9
251.6
279.9
280.3
281.1
306.6
307.2
308.2
161.6
175.1
196.9
183.6
199.2
224.3
205.2
222.8
251.3
226.7
246.4
278.4
254.0
276.2
312.0
275.4
298.8
336.4
307.7
334.2
377.0
340.0
369.6
417.6
380.9
414.2
468.0
410.3
445.6
502.6
453.4
492.9
556.7
507.9
552.3
624.0
64.2
64.3
64.4
72.6
72.9
73.4
81.5
81.7
82.1
90.3
90.4
90.7
98.9
99.1
99.4
109.0
109.4
110.1
122.2
122.5
123.1
135.4
135.6
136.0
148.4
148.6
149.1
162.9
163.3
164.1
180.5
180.8
181.4
197.8
198.2
198.8
108.0
108.1
108.3
121.4
121.6
121.9
137.1
137.3
137.6
152.8
152.9
153.2
168.0
168.2
168.6
182.1
182.4
182.9
205.7
205.9
206.3
229.3
229.4
229.8
252.0
252.3
252.8
274.3
274.6
275.1
305.7
305.9
306.4
336.0
336.4
337.1
148.7
161.5
182.1
168.4
183.1
207.0
187.6
204.2
231.1
206.7
225.2
255.3
231.0
252.1
286.1
252.6
274.7
310.4
281.3
306.3
346.7
310.1
337.9
382.9
346.5
378.2
429.1
375.1
408.4
462.2
413.4
450.5
510.5
462.0
504.2
572.2
72.4
72.5
72.6
81.8
82.0
82.5
91.8
91.9
92.2
101.7
101.7
101.8
111.3
111.4
111.6
122.7
123.1
123.7
137.6
137.8
138.2
152.6
152.6
152.8
166.9
167.1
167.3
183.5
183.8
184.3
203.5
203.5
203.7
222.5
222.7
223.1
119.0
119.1
119.3
134.3
134.4
134.7
151.3
151.4
151.5
168.3
168.3
168.4
185.3
185.4
185.7
201.5
201.7
202.1
226.9
227.0
227.3
252.4
252.4
252.5
277.9
278.2
278.5
302.6
302.7
303.1
336.5
336.6
336.7
370.6
370.9
371.4
Type
Ambient temperature o C
Cooling capacity table for LPCA 055-170HMB
NOTES
Bold values show nominal cooling capacities.
Absorbed power and current refers to the compressor.
Above figures are valid for water ¢t = 5 Ô C.

Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 9
LPCA-055
LPCA-060
LPCA-070
LPCA-075
LPCA-085
LPCA-090
LPCA-100
LPCA-115
LPCA-125
LPCA-135
LPCA-150
LPCA-170
Water
outlet ÆC
25 30 35 40 45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
35
40
45
172.8
169.5
166.6
196.0
191.7
188.0
219.3
214.1
209.8
242.7
236.5
231.5
269.7
262.4
255.2
294.0
287.5
282.0
329.0
321.1
314.6
364.0
354.7
347.3
404.6
393.7
382.8
438.6
428.2
419.5
485.3
473.0
463.1
539.5
524.9
510.5
50.4
56.6
63.7
56.7
63.7
71.9
63.8
71.7
81.1
70.8
79.8
90.2
77.7
87.3
98.3
85.0
95.5
107.8
95.6
107.6
121.6
106.2
119.7
135.3
116.6
130.9
147.4
127.5
143.5
162.1
141.6
159.5
180.5
155.4
174.6
196.6
90.1
98.0
107.4
100.4
109.7
120.7
114.4
124.5
136.6
128.3
139.3
152.4
139.6
152.1
166.9
150.6
164.5
181.1
171.5
186.7
204.9
192.5
208.9
228.6
209.4
228.2
250.4
228.7
249.0
273.2
256.6
278.5
304.9
279.3
304.3
333.8
183.9
180.0
176.6
208.9
203.8
199.4
234.0
227.9
222.6
259.2
251.9
245.9
288.2
280.1
272.1
313.3
305.8
299.1
351.0
341.8
334.0
388.7
377.9
368.8
432.3
420.1
408.1
468.0
455.8
445.3
518.3
503.9
491.7
576.3
560.1
544.1
50.4
56.7
63.8
56.9
63.8
71.9
64.0
71.8
81.1
71.0
79.8
90.2
77.9
87.5
98.4
85.4
95.8
107.9
95.9
107.8
121.6
106.5
119.7
135.2
116.9
131.2
147.6
127.9
143.7
162.1
142.0
159.7
180.3
155.8
174.9
196.8
90.2
98.2
107.6
100.6
109.9
120.9
114.6
124.6
136.7
128.5
139.4
152.5
139.9
152.4
167.2
150.9
164.8
181.3
171.8
187.0
205.1
192.8
209.1
228.8
209.9
228.6
250.8
229.1
249.3
273.4
257.0
278.9
305.1
279.8
304.8
334.4
195.7
191.2
187.2
222.6
216.9
211.6
249.7
242.6
236.4
276.8
268.4
261.2
307.7
298.7
289.8
333.9
325.3
317.5
374.5
364.0
354.6
415.1
402.6
391.8
461.6
448.0
434.7
499.3
485.3
472.8
553.5
536.9
522.4
615.4
597.3
579.6
50.5
56.8
63.9
57.2
64.1
72.1
64.2
72.0
81.1
71.2
79.9
90.1
78.2
87.6
98.5
85.7
96.1
108.1
96.3
108.0
121.7
106.8
119.9
135.2
117.2
131.4
147.8
128.4
144.0
162.2
142.4
159.9
180.3
156.3
175.3
197.1
90.4
98.3
107.7
100.8
110.0
121.0
114.7
124.8
136.8
128.7
139.6
152.6
140.2
152.7
167.4
151.1
165.1
181.5
172.1
187.2
205.2
193.1
209.4
228.9
210.3
229.0
251.2
229.5
249.6
273.7
257.5
279.1
305.3
280.4
305.3
334.9
228.5
222.4
216.7
260.7
253.2
246.0
293.3
283.9
275.1
325.9
314.6
304.2
362.1
350.3
338.7
391.1
379.8
369.0
439.9
425.8
412.7
488.8
471.8
456.4
543.2
525.4
508.1
586.6
567.7
550.2
651.7
629.1
608.5
724.2
700.5
677.5
50.7
57.0
64.2
57.8
64.7
72.6
64.9
72.5
81.5
71.9
80.4
90.3
78.9
88.2
98.9
86.7
97.1
109.0
97.3
108.8
122.2
107.9
120.6
135.4
118.3
132.2
148.4
129.7
145.1
162.9
143.8
160.8
180.5
157.8
176.3
197.8
90.7
98.6
108.0
101.2
110.5
121.4
115.3
125.2
137.1
129.3
140.0
152.8
141.0
153.3
168.0
151.9
165.7
182.1
172.9
187.8
205.7
194.0
209.9
229.3
211.5
230.0
252.0
230.5
250.5
274.3
258.6
279.9
305.7
282.0
306.6
336.0
250.7
243.5
236.7
286.4
277.7
269.3
322.7
311.8
301.4
359.1
345.9
333.5
399.0
385.1
371.7
429.5
416.6
404.0
484.1
467.7
452.1
538.7
518.8
500.3
598.5
577.7
557.5
645.5
623.6
602.8
718.2
691.7
667.1
798.0
770.3
743.3
50.9
57.1
64.3
58.2
65.2
73.1
65.3
73.0
81.8
72.5
80.8
90.5
79.4
88.6
99.2
87.3
97.7
109.6
98.0
109.4
122.7
108.7
121.2
135.7
119.1
132.9
148.8
130.6
145.9
163.6
144.9
161.6
181.0
158.9
177.1
198.4
90.8
98.8
108.2
101.6
110.8
121.7
115.7
125.5
137.4
129.8
140.3
153.0
141.6
153.8
168.3
152.4
166.2
182.6
173.5
188.3
206.0
194.6
210.4
229.5
212.4
230.7
252.5
231.3
251.1
274.7
259.5
280.6
306.0
283.2
307.5
336.6
Type
Ambient temperature o C
Heating
capacity
kW
Absorbed
power
kW
Current
A
Absorbed
power
kW
Current
A
Heating
capacity
kW
Absorbed
power
kW
Current
A
Heating
capacity
kW
Absorbed
power
kW
Current
A
Heating
capacity
kW
Absorbed
power
kW
Current
A
Heating
capacity
kW
Heating capacity table for LPCA 055-170HMB
NOTES
Bold values show nominal heating capacities.
Absorbed power and current refers to the compressor.
Above figures are valid for water ¢t = 5 Ô C.

4. Water pressure drop curves
LPCA 055-170HMB
PD
100
90
80
70
1 2 3 4 5 6 7
60
50
40
kpa
30
20
15
15
20
30
40 50
1000 x I/h
60
70
80
100
WF
150
NOTES
PD: pressure drop through the unit
WF: water flow rate water heat exchanger
1. LPCA 055-060HMB
2. LPCA 070HMB
3. LPCA 0750-085HMB
4. LPCA 090-100HMB
5. LPCA 115HMB
6. LPCA 125-135-150HMB
7. LPCA 170HMB
ETHYLENE GLYCOL CORRECTION FACTORS
% ETHYLENE GLYCOL BY VOLUME
Freezing point
o C
Output duty
kW
Input power
kW
Equivalent Flow rate
L/H
Equivalent Pressure drop kPa
UNIT 10
-4
0,99
0,99
1,02
1,06
20
-9
0,98
0,98
1,04
1,12
30
-15
0,97
0,98
1,08
1,18
40
-23
0,96
0,97
1,13
1,25
10
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

5. Operation range
Outdoor Temperature ( CDB)
COOLING
Outdoor Temperature ( CDB)(RH=85%)
HEATING
47
45
20
18 18
4
0
-5
0
-5
6 15
Leaving water
temperature( o C)
25 50
Leaving water
temperature( o C)
NOTES
Protect the water circuit against freezing
Required continous linear fan speed regulation control.
- The accompanying operating limits are for general guidance only. It may be
possible for certain units to operate outside the confines of the graph. Please
contact Interklima if further clarification is required.
- For operation with leaving water temperature below 6 o C it is required to
confirm with Interklima at the time of order and the addition of glycol into the
system.
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 11

6. Sound data
Type
Octave band center frequency (Hz)
LPCA-055
LPCA-060
LPCA-070
LPCA-075
LPCA-085
LPCA-090
LPCA-100
LPCA-115
LPCA-125
LPCA-135
LPCA-150
LPCA-170
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
Power
Pressure @1 m
Pressure @10 m
dB(∞)
91
83
63
91
83
63
91
83
63
91
83
63
91
83
63
94
86
66
94
86
66
94
86
66
94
86
66
96
88
68
96
88
68
96
88
68
63
83
75
55
83
75
55
83
75
55
83
75
55
83
75
55
85
77
57
85
77
57
85
77
57
85
77
57
86
78
58
86
78
58
86
78
58
125
81
73
53
81
73
53
81
73
53
81
73
53
81
73
53
83
75
55
83
75
55
83
75
55
83
75
55
84
76
56
84
76
56
84
76
56
250
80
72
52
80
72
52
80
72
52
80
72
52
80
72
52
82
74
54
82
74
54
82
74
54
82
74
54
83
75
55
83
75
55
83
75
55
500
85
77
57
85
77
57
85
77
57
85
77
57
85
77
57
87
79
59
87
79
59
87
79
59
87
79
59
88
80
60
88
80
60
88
80
60
1000
88
80
60
88
80
60
88
80
60
88
80
60
88
80
60
90
82
62
90
82
62
90
82
62
90
82
62
91
82
62
91
82
62
91
82
62
2000
91
83
63
91
83
63
91
83
63
91
83
63
91
83
63
93
85
65
93
85
65
93
85
65
93
85
65
94
86
66
94
86
66
94
86
66
4000
84
75
56
84
75
56
84
75
56
84
75
56
84
75
56
85
77
57
85
77
57
85
77
57
85
77
57
86
78
58
86
78
58
86
78
58
8000
72
64
44
72
64
44
72
64
44
72
64
44
72
64
44
74
66
46
74
66
46
74
66
46
74
66
46
75
67
47
75
67
47
75
67
47
12
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

7. Outlook drawings
7.1 LPCA 055-085HMB
243
1000
2300
A
803
2200
1300 1300
7.2 LPCA 090-125HMB
307,5
1250
2300
A
1200
2200
1300 1300
3900
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 13

7.3 LPCA 135-170HMB
307,5
1250
2300
A
2200
2200
1200
1300 1300
5200
1300
TYPE
LPCA 055
LPCA 060
LPCA 070
LPCA 075
LPCA 085
LPCA 090
LPCA 100
LPCA 115
LPCA 125
LPCA 135
LPCA 150
LPCA 170
A
2000
2000
1500
1500
1500
2280
2280
2280
2250
2250
2250
2250
B
285
285
337
337
337
337
337
337
342
342
342
342
B
2200
14
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

8. Refrigerant circuit diagrams
LPCA 055-170HMB
7
6
8 9 11 10 5
CIRCUIT 2
CIRCUIT 2
CIRCUIT 3
CIRCUIT 4
CIRCUIT 3
5
6
CIRCUIT 4
3
3
2
4
1
12
NOTES
1. Compressor (tandem)
2. Shell and tube heat exchanger
3. Air heat exchanger
4. Circuit reversing valve
5. Expansion device (Thermal exp. valve)
6. Check valve
7. Liquid receiver
8. Shut off valve
9. Filter dryer
10. Solenoid valve
11. Sight glass
12. Suction accumulator
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 15

9. Wiring diagrams
9.1 LPCA 055-085HMB
L1
L2
L3
N
FROM POWER CIRCUIT
F1 F2 VC
12AC ALL GND
12AC 12DC TK1
CONTROL CIRCUIT
REMOTE ON-OFF
GND
ID5
OFF
ON
ST4
ID4
S3
3
S
ST3
ID3
S2
2
S
ST2
ID2
S1
1
S
ST1
ID1
12AC ALL GND
12AC 12DC TK2
GND
ID10
REMOTE S-W
NC
ID9
W
S
ID11
ID8
S4
4
S
ST6
ID7
ST5
ID6
+
220V
12V
T
L
H
L
H
F
T
T
T
S
∏P2
∏P1
_
P2
TC1
LP2
LP1
C1 P2 F2 P1
T
TF2
TF1
P1
T
F1
FLOW SWITCH
TC4
TC3
SW C4
C3
TC2
C2
ENERGY 400
CC1
CC3
1
2
3 4
5 6 7 8
9 10
SV1
SV2
Ltc1
Ltc2
4V1
4V2
T
AL
AL
SV1
SV2
CC1
CC2
CC3
CC4
4V1
4V2
H
C
EXPANSION
RELAY 9
RELAY 10
N
N
N
N
P
CF1
CF2
16
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

F
9.2 LPCA 055-085HMB
L1
L2
L3
N
SM1
POWER CIRCUIT
PE
FCH
FC1
FC2
FC3
FC4
FF1
FF2
CC1
CC2
CC3
CC4
CH1
CH2
CH3
CH4
CC1
CC2
CC3
CC4
CF1
CF2
CH1
CH2
CH3
CH4
R S
VC
T
N
U1
V1 W1
U2
V2 W2
U3
V3 W3
U4
V4 W4
UF1 VF1 WF1
UF2 VF2 WF2
N
N
N
N
CM1
CM2
CM3
CM4
SF1,2
SF3,4
LEGEND
F1 CONTROL CIRCUIT BREAKER
F2 LOW VOLTAGE (12 V AC) CIRCUIT BREAKER
FF1 CIRCUIT 1 FANS CIRCUIT BREAKER
FF2 CIRCUIT 2 FANS CIRCUIT BREAKER
VC VOLTAGE SURVEYOR
CC1 COMPRESSOR 1 CONTACTOR
CC2 COMPRESSOR 2 CONTACTOR
CC3 COMPRESSOR 3 CONTACTOR
CC4 COMPRESSOR 4 CONTACTOR
SV1 CIRCUIT 1 LIQUID LINE SOLENOID VALVE
SV2 CIRCUIT 2 LIQUID LINE SOLENOID VALVE
TC1 COMPRESSOR 1 THERMAL PROTECTION
TC2 COMPRESSOR 2 THERMAL PROTECTION
TC3 COMPRESSOR 3 THERMAL PROTECTION
TC4 COMPRESSOR 4 THERMAL PROTECTION
TF CONDENSER FANS THERMAL PROTECTION
HP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1
LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1
HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2
LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2
S1 ENTERING WATER TEMPERATURE SENSOR
S2 LEAVING WATER TEMPERATURE SENSOR
S3 CIRCUIT 1 COIL TEMPERATURE SENSOR
S4 CIRCUIT 2 COIL TEMPERATURE SENSOR
TR1 TRANSFORMER 220/12V AC
SM1 GENERAL CIRCUIT BREAKER
CM1 COMPRESSOR 1 (CIRCUIT 1)
CM2 COMPRESSOR 2 (CIRCUIT 1)
CM3 COMPRESSOR 3 (CIRCUIT 2)
CM4 COMPRESSOR 4 (CIRCUIT 2)
FC1 COMPRESSOR 1 CIRCUIT BREAKER
FC2 COMPRESSOR 2 CIRCUIT BREAKER
FC3 COMPRESSOR 3 CIRCUIT BREAKER
FC4 COMPRESSOR 4 CIRCUIT BREAKER
FCH COMPRESSORS CRANKCASE HEATERS
CIRCUIT BREAKER
CH1 CRANKCASE HEATER COMPRESSOR 1
CH2 CRANKCASE HEATER COMPRESSOR 2
CH3 CRANKCASE HEATER COMPRESSOR 3
CH4 CRANKCASE HEATER COMPRESSOR 4
CF1 CIRCUIT 1 FANS CONTACTOR
CF2 CIRCUIT 2 FANS CONTACTOR
SF1,2 CIRCUIT 1 FANS
SF3,4 CIRCUIT 2 FANS
4V1 4-WAY VALVE CIRCUIT 1
4V2 4-WAY VALVE CIRCUIT 2
ALARM
E00: REMOTE OFF IN POSITION OFF
E01: HIGH PRESSURE CIRCUIT 1 OR CIRCUIT 1 FANS THERMAL PROTECTION
E02: LOW ORESSURE CIRCUIT 1
E03: THERMAL SWITCH PROTECTION COMP.1
E06: SENSOR ST2 FAULT
E07: SENSOR ST3 FAULT
E13: THERMAL SWITCH PROTECTION COMP. 2
E23: THERMAL SWITCH PROTECTION COMP. 3
E33: THERMAL SWITCH PROTECTION COMP. 4
E21: HIGH PRESSURE CIRCUIT 2 OR CIRCUIT 2 FANS THERMAL PROTECTION
E22: LOW PRESSURE CIRCUIT 2
E27: SENSOR ST6 FAULT
E40: SENSOR ST1 FAULT
E41: FLOW SWITCH OR PUMP THERMAL PROTECTION
FIELD CONNECTIONS
220 V AC
C
P
T
H
SW
ON
OFF
S
W
AL
AL
C-P PUMP COMMAND (220 V AC)
T-H PUMP THERMAL PROTECTION
F-SW DIFFERENTIAL WATER PRESSURE SWITCH
ON-OFF REMOTE ON-OFF SWITCH
AL-AL ALARM SIGNAL (N.O. CONTACT)
S-W REMOTE SUMMER-WINTER SWITCH
220 V AC
PUMP COMMAND (220 V AC)
PUMP THERMAL PROTECTION
DIFFERENTIAL WATER PRESSURE SWITCH
REMOTE SWITCH ON-OFF
REMOTE SUMMER -WINTER
ALARM SIGNAL (N.O. CONTACT)
ENTERING WATER TEMP.SENSOR (ST1)
LEAVING WATER TEMP. SENSOR (ST2)
CIRCUIT 1 COIL TEMPERATURE SENSOR (ST3)
CIRCUIT 2 COIL TEMPERATURE SENSOR (ST4)
CIRCUIT 1 FANS THERMAL PROTECTION
CIRCUIT 2 FANS THERMAL PROTECTION
COMPRESSOR 1 THERMAL PROTECTION
COMPRESSOR 2 THERMAL PROTECTION
COMPRESSOR 3 THERMAL PROTECTION
COMPRESSOR 4 THERMAL PROTECTION
HIGH PRESSURE PRESSOSTAT CIRCUIT 1
LOW PRESSURE PRESSOSTAT CIRCUIT 1
HIGH PRESSURE PRESSOSTAT CIRCUIT 2
LOW PRESSURE PRESSOSTAT CIRCUIT 2
220 V FOR THERMAL PROTECTION COMP. 1
220 V FOR THERMAL PROTECTION COMP. 2
CIRCUIT 1 SOLENOID VALVE
CRANKCASE HEATER COMPRESSOR 1
CRANKCASE HEATER COMPRESSOR 2
4-WAY REVERSING VALVE CIRCUIT1
220 V FOR THERMAL PROTECTION COMP. 3
220 V FOR THERMAL PROTECTION COMP. 4
CIRCUIT 2 SOLENOID VALVE
CRANKCASE HEATER COMPRESSOR 3
CRANKCASE HEATER COMPRESSOR 4
SW
ON
OFF
S
W
F2
C1
C
P
T
H
F
AL
AL
S
F1
T
T
T
C2
1
S
2
S
3
S
4
T
T
C3
T
C4
H
P1
L
P1
H
P2
L
P2
LTC1
LTC2
SV1
CH1
CH2
4V1
LTC3
LTC4
SV2
CH3
CH4
4V2
N
SV1 4V1 SV2 4V2
4-WAY REVERSING VALVE CIRCUIT 2
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 17

9.3 LPCA 090-125∏MB
L1
N
F1
VC
MASTER
CONTROL CIRCUIT
LTC1-6
CONNECTION
WITH SLAVE
CC1
CC2
SV1
CC3
CC4
SV2
C P
220 V AC
AL
AL
CF1
CF2
4V1
4V2
TR1
F2
Rx+
GND
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
C9
G
GO
NO9
NO10
NO11
C9
J11 J12
J13 J14 J15 J16
J17 J18
MASTER PCO2
J1 J2 J3 J4 J5 J6 J7 J8
G
GO
NO12
C12
NC12
NO13
B1
B2
B3
GRD
VDC
B4
BC4
B5
BC5
VG
VGO
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
B6
B7
B8
GRD
ID9
ID10
ID11
ID12
IDC9
ID13h
ID13
IDc13
ID14
ID14h
S TEMPERATURE
S TEMPERATURE
3
4
S
F SW
ON OFF
T
TH
H
LP1
L P1
T
TC1
C1
T
TC2
C2
L LP2
P2
C13
NC13
CC5
CC6
SV3
CF3
Rx-
Rx-
Rx+
GND
T
TC3
C3
T TC4
C4
S W
B1
B2
B3
GRD
VDC
B4
BC4
B5
BC5
VG
VGO
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
B6
B7
B8
GRD
ID9
ID10
ID11
ID12
IDC9
ID13h
ID13
IDc13
ID14
ID14h
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
TEMPERATURE 1
S
TEMPERATURE 2
H P1 T
C7
NO7
C7
F1
NO8
C8
NC8
C9
NO9
NO10
NO11
C9
H P2 T
F2
L1
N
F1
VC
SLAVE
CONTROL CIRCUIT
LTC1-6
CONNECTION
WITH MASTER
4V3
TR1
F2
J11 J12
J13 J14 J15 J16
J17 J18
SLAVE PCO2
J1 J2 J3 J4 J5 J6 J7 J8
NO12
S TEMPERATURE
S TEMPERATURE
5
6
L LP3
P3
T
TC5
C5
T
TC6
C6
C12
NC12
NO13
C13
NC13
H P3 T
F3
18
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

9.4 LPCA 135-170∏MB
L1
N
F1
VC
LTC1-8
CONNECTION
WITH SLAVE
CC1
CC2
SV1
MASTER
CONTROL CIRCUIT
CC3
CC4
SV2
C P
220 V AC
AL AL
CF1
CF2
4V1
4V2
TR1
F2
Rx-
Rx+
GND
C1
NO1
NO2
NO3
C1
C4
NO4
NO5
NO6
C4
C7
NO7
C7
NO8
C8
NC8
C9
NO9
NO10
NO11
C9
J11 J12
J13 J14 J15 J16
J17 J18
MASTER PCO2
J1 J2 J3 J4 J5 J6 J7 J8
NO12
C12
NC12
NO13
G
GO
C13
NC13
G
GO
B1
B2
B3
GRD
VDC
B4
BC4
B5
BC5
CC5
CC6
SV3
VG
VGO
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
B6
B7
B8
GRD
ID9
ID10
ID11
ID12
IDC9
ID13h
ID13
IDc13
ID14
ID14h
S TEMPERATURE
S TEMPERATURE
3
4
CC7
CC8
SV4
CF3
CF4
Rx-
S
F SW
ON OFF
T TH
H
LP1
L P1
T
TC1
C1
T
TC2
C2
L LP2
P2
T
TC3
C3
T
TC4
C4
S W
B1
B2
B3
GRD
VDC
B4
BC4
B5
BC5
VG
VGO
Y1
Y2
Y3
Y4
ID1
ID2
ID3
ID4
ID5
ID6
ID7
ID8
IDC1
B6
B7
B8
GRD
ID9
ID10
ID11
ID12
IDC9
ID13h
ID13
IDc13
ID14
ID14h
Rx+
GND
C1
NO1
NO2
NO3
C1
TEMPERATURE 1
S
C4
NO4
NO5
NO6
C4
TEMPERATURE 2
C7
NO7
C7
NO8
C8
NC8
H P1 T
C9
F1
NO9
NO10
NO11
C9
H P2 T
F2
L1
N
F1
VC
LTC1-8
SLAVE
CONTROL CIRCUIT
CONNECTION
WITH MASTER
4V3
TR1
F2
J11 J12
J13 J14 J15 J16
J17 J18
MASTER PCO2
J1 J2 J3 J4 J5 J6 J7 J8
S TEMPERATURE
S TEMPERATURE
5
6
L LP3
P3
T
TC5
C5
T
TC6
C6
L LP4
P4
T
TC7
C7
T
TC8
C8
NO12
C12
NC12
H P3 T
NO13
C13
NC13
F3
H P4 T
F4
4V4
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 19

T
LEGEND
F1 CONTROL CIRCUIT BREAKER (220 V)
F2 CONTROL CIRCUIT BREAKER(24 V)
S1 ENTERING WATER SENSOR
S2 LEAVING WATER SENSOR
S3 CIRCUIT 1 CONDENSER COIL TEMPERATURE SENSOR
S4 CIRCUIT 2 CONDENSER COIL TEMPERATURE SENSOR
S5 CIRCUIT 3 CONDENSER COIL TEMPERATURE SENSOR
S6 CIRCUIT 4 CONDENSER COIL TEMPERATURE SENSOR
CF1 CIRCUIT 1 CONDENSER FANS CONTACTOR
CF2 CIRCUIT 2 CONDENSER FANS CONTACTOR
TC1 COMPRESSOR 1 THERMAL PROTECTION
TC2 COMPRESSOR 2 THERMAL PROTECTION
TC3 COMPRESSOR 3 THERMAL PROTECTION
TC4 COMPRESSOR 4 THERMAL PROTECTION
TC5 COMPRESSOR 5 THERMAL PROTECTION
TC6 COMPRESSOR 6 THERMAL PROTECTION
TC7 COMPRESSOR 7 THERMAL PROTECTION
TC8 COMPRESSOR 8 THERMAL PROTECTION
HP1 HIGH PRESSURE PRESSOSTAT CIRCUIT 1
LP1 LOW PRESSURE PRESSOSTAT CIRCUIT 1
HP2 HIGH PRESSURE PRESSOSTAT CIRCUIT 2
LP2 LOW PRESSURE PRESSOSTAT CIRCUIT 2
HP3 HIGH PRESSURE PRESSOSTAT CIRCUIT 3
LP3 LOW PRESSURE PRESSOSTAT CIRCUIT 3
HP4 HIGH PRESSURE PRESSOSTAT CIRCUIT 4
LP4 LOW PRESSURE PRESSOSTAT CIRCUIT 4
FF1 CIRCUIT 1 FAN CIRCUIT BREAKER
FF2 CIRCUIT 2 FAN CIRCUIT BREAKER
FF3 CIRCUIT 3 FAN CIRCUIT BREAKER
FF4 CIRCUIT 4 FAN CIRCUIT BREAKER
TR1 TRANSFORMER 220V / 24V
VC VOLTAGE SURNEYOR
TF1 CIRCUIT 1 CONDENSER FANS THERMAL PROTECTION
TF2 CIRCUIT 2 CONDENSER FANS THERMAL PROTECTION
TF3 CIRCUIT 3 CONDENSER FANS THERMAL PROTECTION
TF4 CIRCUIT 4 CONDENSER FANS THERMAL PROTECTION
SV1 LIQUID LINE SOLENOID VALVE CIRCUIT 1
SV2 LIQUID LINE SOLENOID VALVE CIRCUIT 2
SV3 LIQUID LINE SOLENOID VALVE CIRCUIT 3
SV4 LIQUID LINE SOLENOID VALVE CIRCUIT 4
CF1 CIRCUIT 1 FANS CONTACTOR
CF2 CIRCUIT 2 FANS CONTACTOR
CF3 CIRCUIT 3 FANS CONTACTOR
CF4 CIRCUIT 4 FANS CONTACTOR
CM1 COMPRESSOR 1 (CIRCUIT 1)
CM2 COMPRESSOR 2 (CIRCUIT 1)
CM3 COMPRESSOR 3 (CIRCUIT 2)
CM4 COMPRESSOR 4 (CIRCUIT 2)
CM5 COMPRESSOR 5 (CIRCUIT 3)
CM6 COMPRESSOR 6 (CIRCUIT 3)
CM7 COMPRESSOR 7 (CIRCUIT 4)
CM8 COMPRESSOR 8 (CIRCUIT 4)
FC1 COMP. 1 CIRCUIT BREAKER
FC2 COMP. 2 CIRCUIT BREAKER
FC3 COMP. 3 CIRCUIT BREAKER
FC4 COMP. 4 CIRCUIT BREAKER
FC5 COMP. 5 CIRCUIT BREAKER
FC6 COMP. 6 CIRCUIT BREAKER
FC7 COMP. 7 CIRCUIT BREAKER
FC8 COMP. 8 CIRCUIT BREAKER
4V1 4-WAY REVERSING VALVE CIRCUIT 1
4V2 4-WAY REVERSING VALVE CIRCUIT 2
4V3 4-WAY REVERSING VALVE CIRCUIT 3
4V4 4-WAY REVERSING VALVE CIRCUIT 4
CC1 COMPRESSOR 1 CONTACTOR
CC2 COMPRESSOR 2 CONTACTOR
CC3 COMPRESSOR 3 CONTACTOR
CC4 COMPRESSOR 4 CONTACTOR
CC5 COMPRESSOR 5 CONTACTOR
CC6 COMPRESSOR 6 CONTACTOR
CC7 COMPRESSOR 7 CONTACTOR
CC8 COMPRESSOR 8 CONTACTOR
SF1, 2 CIRCUIT 1 FANS
SF3, 4 CIRCUIT 2 FANS
SF5, 6 CIRCUIT 3 FANS
SF7, 8 CIRCUIT 4 FANS
SM1 GENERAL CIRCUIT BREAKER
FIELD CONNECTIONS
220 V AC
C
P
SW
H
F
ON
OFF
S
W
AL
AL
C-P PUMP COMMAND (220 V)
T-H PUMP THERMAL PROTECTION
(DRY CONTACT)
F-SW DIFFERENTIAL WATER PRESSURE
SWITCH (DRY CONTACT)
AL-AL ALARM SIGNAL (N.O. CONTACT)
ON-OFF REMOTE ON-OFF SWITCH
(DRY CONTACT)
S-W REMOTE SUMMER-WINTER SWITCH
(DRY CONTACT)
PUMP COMMAND (220VAC)
PUMP THERMAL PROTECTION
220 V AC
DIFFERENTIAL WATER PRESSURE SWITCH
ALARM (N.O.CONTACT)
REMOTE SWITCH ON-OFF
REMOTE SWITCH SUMMER - WINTER
ENTERING WATER TEMPERATURE SENSOR S1
LEAVING WATER TEMPERATURE SENSOR S2
CIRCUIT 1 CONDENSER COIL TEMPERATURE SENSOR S3
CIRCUIT 2 CONDENSER COIL TEMPERATURE SENSOR S4
CIRCUIT 3 CONDENSER COIL TEMPERATURE SENSOR S5
CIRCUIT 4 CONDENSER COIL TEMPERATURE SENSOR S6
CIRCUIT 1 FANS THERMAL PROTECTION
CIRCUIT 2 FANS THERMAL PROTECTION
CIRCUIT 3 FANS THERMAL PROTECTION
CIRCUIT 4 FANS THERMAL PROTECTION
COMPRESSOR 1 THERMAL PROTECTION
COMPRESSOR 2 THERMAL PROTECTION
COMPRESSOR 3 THERMAL PROTECTION
COMPRESSOR 4 THERMAL PROTECTION
COMPRESSOR 5 THERMAL PROTECTION
COMPRESSOR 6 THERMAL PROTECTION
COMPRESSOR 7 THERMAL PROTECTION
COMPRESSOR 8 THERMAL PROTECTION
HIGH PRESSURE PRESSOSTAT CIRCUIT 1
LOW PRESSURE PRESSOSTAT CIRCUIT 1
HIGH PRESSURE PRESSOSTAT CIRCUIT 2
LOW PRESSURE PRESSOSTAT CIRCUIT 2
HIGH PRESSURE PRESSOSTAT CIRCUIT 3
LOW PRESSURE PRESSOSTAT CIRCUIT 3
HIGH PRESSURE PRESSOSTAT CIRCUIT 4
LOW PRESSURE PRESSOSTAT CIRCUIT 4
220 V °π∞ ∆√ £∂ƒªπ∫√ ∆√À 1Ô˘ Àªπ∂∆∏
220 V FOR THERMAL COMPRESSOR 2
220 V FOR THERMAL COMPRESSOR 3
220 V FOR THERMAL COMPRESSOR 4
220 V FOR THERMAL COMPRESSOR 5
220 V FOR THERMAL COMPRESSOR 6
220 V FOR THERMAL COMPRESSOR 7
220 V FOR THERMAL COMPRESSOR 8
CRANKCASE HEATER COMPRESSOR 1
CRANKCASE HEATER COMPRESSOR 2
CRANKCASE HEATER COMPRESSOR 3
CRANKCASE HEATER COMPRESSOR 4
CRANKCASE HEATER COMPRESSOR 5
CRANKCASE HEATER COMPRESSOR 6
CRANKCASE HEATER COMPRESSOR 7
CRANKCASE HEATER COMPRESSOR 8
LIQUID LINE SOLENOID VALVE CIRCUIT 1
LIQUID LINE SOLENOID VALVE CIRCUIT 2
LIQUID LINE SOLENOID VALVE CIRCUIT 3
LIQUID LINE SOLENOID VALVE CIRCUIT 4
4-WAY REVERCING VALVE CIRCUIT 1
4-WAY REVERCING VALVE CIRCUIT 2
4-WAY REVERCING VALVE CIRCUIT 3
4-WAY REVERCING VALVE CIRCUIT 4
220 V FOR ANTIFREEZE HEATERS (OPTIONAL)
SW
AL
AL
ON
OFF
F1
T
F2
T
F3
T
F4
T
C1
T
C2
T
C3
T
C4
T
C5
T
C6
T
C7
T
C8
H
P1
L
P1
P3
L
P3
C
P
T
H
S
W
S
1
S
2
S
3
S
4
S
5
S
6
T
H
P2
L
P2
H
P4 H
L
P4
LTC1
LTC2
LTC3
LTC4
LTC5
LTC6
LTC7
LTC8
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CH8
SV1
SV2
SV3
SV4
4V1
4V2
4V3
4V4
∞
¡
F
9.6 LPCA 135-170HMB
L1
L2
L3
N
PE
SM1
FC1
FC2
FC3
FC4
FC5
FC6
FC7
FC8
POWER CIRCUIT
FF1
FF2
FF3
FF4
FCH
CC1
CC2
CC3
CC4 CC5
CC6
CC7
CC8
CC1
U1 V1 W1
CC2
U2 V2 W2
CC3
U3 V3
W3
CC4
U4 V4 W4
CC5
U5 V5
W5
CC6
U6 V6 W6
CC7
U7 V7
W5
CC8
U8 V8 W8
CF1 CF2 CF3 CF4
UF1VF1WF1
UF2VF2WF2
UF3VF3WF3
UF4VF4WF4
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8
N N N N N N N N
R S T
VC N
CM1
CM2
CM3
CM4
CM5
CM6
CM7
CM8
SF1,2
SF3,4
SF5,6
SF7,8
20
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

10.Installation
10.1 Selection of location - service space
The LPCA-HMB unit should be installed in a location that meets
the following requirements:
1. The foundation is strong enough to support the weight of the
unit, and the floor is flat to prevent vibration and noise
generation.
2. The space around the unit is adequate for servicing and the
minimum space air inlet and air outlet is available. If several
units are being installed side by side in parallel, the minimum
service space between them must be taken into account.
3. There is no danger of fire due to leakage of inflammable gas.
4. Ensure that water cannot cause any damage to the location in
case it drips out of the unit.
5. Make sure that the air inlet and outlet of the unit are not
positioned towards the main wind direction.Frontal wind shall
disturb the operation of the unit.If necessary, use a
windscreen to block the wind.
6. In heavy snowfall areas, select an installation site where snow
shall not affect operation of the unit.
7. Make sure that the unit can be fixed directly on concrete.
8. In order to avoid the transmission of vibration from the
operating unit to its carrying structure, the use of antivibration
material to install under the supports of the unit is
recommended. It is suggested to install a rubber pad between
the points of support and the base of the unit, or spring
antivibration mounts under each point of support of the unit.
4000mm
2000mm
2000mm
2000mm
2000mm
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 21

10.2 Centre of gravity
LPCA 055-085HMB
1100
1300
LPCA 090-125HMB
1950
1100
22
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

LPCA 135-170HMB
2600
1100
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 23

10.3 Recommendations concerning the hydraulic circuit
ñ All field connections must be provided by a licensed technician
and must comply with the applicable local and national codes.
ñ Evaporator water connections should be made in accordance
with the unit outlook respecting the water inlet – and outlets.
ñ Water piping to be arranged so that the circulating pump
discharges directly into the evaporator.
ñ Install a flow switch or water differential pressostat (standard
component) in the water outlet piping to prevent the unit from
operating at a water flow, which is too low. A terminal is provided
in the switch box for the electrical connection of the flow switch
in the control circuit.
ñ To avoid erosion, it is recommended to install a filter in the
water inlet pipe.
ñ It is essential to install a thermometer in the water inlet/ outlet
pipe to check temperatures.
ñ Provide heat insulation with suitable vapour barrier around the
chilled water piping to prevent condensation and capacity loss.
ñ Provide drain connections at all low points of the system to
permit complete drainage for maintenance and/ or shutdown.
ñ Air vents should be provided at all high points in the system
located were they are easily accessible for servicing. The
water inlet pipe is specially designed to obtain a complete air
purge of the evaporator.
ñ Install an expansion tank on the suction side of the water pump
so that the water pressure on the pump suction will be positive.
ñ To avoid frequent on/off operation of the compressor, a
minimum water volume is required in the system (table 10.4).
ñ To assure proper operation of the unit, the water flow through
the evaporator must be within the specified limits in (table
10.4).
7
15
13
3
1 2
4
5
6
5
14
5
7
3
1
16
2 9
10
4
5
5
11
8
12
5
8
Example with one central pump
24
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

15
7
13
5
3
1 2
4
6
7
5
5
14
5
5
5
6.1 5
6.1 5
6.1 5
3
1
2
16
9
10
4
12 11
5
5
5
5
5
8
5
8
Example with internal loop pump and external zone pumps
NOTES
1. Flexible
2. Thermometer
3. Manometer
4. Air vent
5. Shut off valve
6. Pump (primary circuit)
6.1. Pump (Secondary circuit)
7. Water filter
8. Drainage
9. Flow switch (optional)
10. Balancing valve
11. Buffer tank
12. Electric resistance
13. Automatic make up water valve
14. Expansion membrane
15. Check valve
16. Safety valve
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 25

10.4 Watercharge, flow and quality
To ensure proper operation of the unit, a minimum water volume
is required in the system and the water flow must be within the
operation range as specified in the table.
LPCA 055HMB
LPCA 060HMB
LPCA 070HMB
LPCA 075HMB
LPCA 085HMB
LPCA 090HMB
LPCA 100HMB
LPCA 115HMB
LPCA 125HMB
LPCA 135HMB
LPCA 150HMB
LPCA 170HMB
Minim um
water
volume (l)
1129
1288
1445
1604
1794
1931
2168
2405
2690
2891
3207
3587
Minim um
water flow
(l/h)
14788
16855
18914
20964
23456
25286
28366
31455
35188
37819
41937
46912
Nominal
water flow
(l/h)
32370
36911
41435
45976
51428
55367
62161
68955
77125
82887
91934
102839
Maxim um
water flow
(l/h)
38915
44000
49773
50000
51000
66543
69000
71000
92601
99524
103000
104000
Be sure the water quality is in accordance with the specifications
below
NOTES
The above tables are purely
indicative and non-binding
Items
Items to be controlled:
PH AT 25 Ô C
∂lectrical conduct (mS/m) at 25 Ô C
Chloride ion (mg CI-/I)
Sulfate ion (mg SO 2/4/I
M-alkalinity (ph 4.8) (mg SO3/I)
Total hardness (mg CaCO3/I )
Calcium hardness (mg CaCO3/I)
Silica ion (mg SiO2/I
Items to be referred to:
Iron (mg Fe/I)
Copper (mg Cu/I)
Sulfide ion (mg S2-/I)
Amonium ion (mg NH+4/I
Remaining chloride (mg CI/I)
Free carbide (mg SO2/I)
Stability index
Circulating
water 20C
Evaporator water
6.8 - 8.0
below 30
below 50
below 50
below 50
below 70
below 50
below 30
below 1.0
below 1.0
Not detectable
below 0.3
below 0.25
below 0.4
-
Supply water
6.8 - 8.0
below 30
below 200
below 50
below 50
below 70
below 50
below 30
below 0.3
below 0.1
Not detectable
below 0.1
below 0.3
below 4.0
-
Circulating
water 20C-60C
7.0 - 8.0
below 30
below 30
below 30
below 50
below 70
below 50
below 30
Heated water
below 1.0
below 1.0
Not detectable
below 0.1
below 0.1
below 0.4
-
Supply water
7.0 - 8.0
below 30
below 30
below 30
below 50
below 70
below 50
below 30
below 0.3
below 1.0
Not detectable
below 0.1
below 0.3
below 4.0
-
Tendency
if out of criteria
corrosion + scale
corrosion + scale
corrosion
corrosion
scale
scale
scale
scale
corrosion + scale
corrosion
corrosion
corrosion
corrosion
corrosion
corrosion + scale
10.5 Operating pressure of the
refrigerant circuit
It is important to check the high and low pressure of the
refrigerant circuit to ensure the proper operation of the
unit and to guarantee that the rated output shall be
obtained.
Cooling mode
(region)
low pressure
high pressure
Minim um
(outdoor temp. 15 Ô Nominal
CDB)
(leaving water temp 6 Ô (outdoor temp. 35 Ô Maximum
CDB)
C) (leaving water temp, 7 Ô (outdoor temp. 38 Ô CDB)
C) (leaving water temp, 25 Ô C)
3,5-4 bar
17-19 bar
4-5 bar
21-23 bar
5,5-6 bar
24-26 bar
Attention:
The pressures measured shall vary between a maximum
and minimum value, depending on the water and out
door temperatures at the moment of measurement.
Heating mode
(region)
low pressure
high pressure
Minim um
(outdoor temp. -5 Ô CDB)
Nominal
(outdoor temp. 7 Ô CDB)
Maximum
(outdoor temp. 21 Ô CDB)
(leaving water temp 25 Ô C) (leaving water temp, 45 Ô C) (leaving water temp, 50 Ô C)
2.5-3 bar
15-18 bar
3-3.5 bar
21-23 bar
3,5-5 bar
25-26 bar
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Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

10.6 Digital controler
User interface LPCA 055-085HMB
The interface on the front panel of the instrument can be used to
carry out all the operations connected to the use of the instrument,
and in particular to:
Set operating mode
Check the state of resources
Respond to alarm situations
10.6.1 Keys
1 2
3 4
Front panel of the instrument
Selects operating mode:
If the heating mode is enabled, each time the
key is pressed the following sequence occurs:
Stand-by cooling heating stand by
If cooling mode is enabled:
heating Stand-by cooling heating stand by
In menu mode, this key acts as a SCROLL UP
or UP key (increasing value).
Resets alarms, and turns the instrument on
and off. Press once to reset all manually reset
alarms not currently active.
Hold down the key for 2 seconds to turn the
instrument from on to off or vice versa. When it is
off, only the decimal point remains on the display.
In menu mode this key acts as a SCROLL DOWN
or DOWN key (decreasing value).
Pressing the “mode” and “on-off” keys at the
same time.
If you press both keys at the same time and
then release within 2 seconds, you shall move
one level deeper in the display menu.
If you press both keys for more than 2 seconds
you shall move one level up.
If you are currently viewing the lowest level in
the menu and you press both keys and release
within 2 seconds, you shall go up one level.
10.6.2 Displays
10.6.2.1 Display
Normal display shows:
ñ Regulation temperature in tenths of degrees
celsius with a decimal point, or in degrees
fahrenheit without a decimal point.
ñ The alarm code, if at least one alarm is active. If
multiple alarms are active, the one with greater
priority shall be displayed, according to the Table
of Alarms.
ñ If temperature control is not analogue and
depends on the status of a digital input (ST1 or
ST2 configured as digital inputs), the “On” or
“Off” label shall be displayed, depending on
whether temperature control is active or not.
ñ When in menu mode, the display depends on the
current position; labels and codes are used to
help the user identify the current function.
ñ Decimal point: when displaying hours of operation,
indicates that the value must be multiplied x 100.
10.6.2.2 Led
Led 1 compressor 1 (circuit 1).
1 ON if compressor 1 is active.
OFF if compressor 1 is off.
Rapid BLINK if safety timing is in progress.
Slow BLINK if compressor is currently set to defrost
(heat pump version).
2
3
4
Led 2 compressor 2 (circuit 1).
ON if compressor 2 is active.
OFF if compressor 2 is not active.
Rapid BLINK if safety timing is in progress.
Low BLINK if compressor 2 is currently defrosting.
Led 3 compressor 3 (circuit 2).
ON if compressor 3 is active (compressor2).
OFF if compressor 3 is not active.
Rapid BLINK if safety timing is in progress.
Slow BLINK if compressor 3 is defrosting.
Led 4 compressor 4 (circuit 2).
ON if compressor 4 is active.
OFF if compressor 4 is not active.
Rapid BLINK if safety timing is in progress.
Slow BLINK if compressor 4 is defrosting.
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 27

Defrost led (heat pump version).
ON if defrosting is in progress.
OFF if defrosting is disabled or has been completed.
BLINK if timing is in progress (defrost interval).
10.7 Remote keyboard
The remote keyboard on the display is an exact copy of the
information displayed on the instrument, with the same leds;
Electrical heater/boiler led.
ON if the internal anti-freeze electrical heater or boiler is on.
OFF if the internal anti-freeze electrical heater or boiler is off.
Heating led (heat pump version).
ON if the device is in heating mode.
Cooling led.
ON if the controller is in cooling mode.
If neither the HEATING led nor the COOLING led is on, the
controller is in STAND-BY mode.
It performs exactly the same functions as those described in the
display section.The only difference is in use of the UP and DOWN
keys (to increase and decrease value), which are separate from
the MODE and ON/OFF keys.
Connection with the controller is illustrated below:
PCB CONTROL BOARD
S + -
BACK VIEW REMOTE
24
25
26
S + -
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Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

10.8 User interface LPCA 090-170HMB
The interface on the front panel of the instrument can be used to
carry out all the operations connected to the use of the instrument,
and in particular to:
ñ Set operating mode
ñ Respond to alarm situations
ñ Check the state of resources
ñ Displays the values measured by the probes.
ñ Displays the values relating to the maintenance of the devices(working hours and operating hour
counter reset.
ñ Accesses the group of screens for printer management.
ñ Displays the status of inputs and outputs(both digital and analogue.
ñ Allows the display/programming of the clock.
ñ Allows the Set-Point setting.
ñ Allows the various operating parameters to be set(safety parameters, thresholds).
ñ By pressing simultaneously these buttons you access the unit configuration (number of
instruments connected to the pCO2, scale setting, probe calibration etc.).
ñ Displays the version of the application program and other information.
ñ 1. ON-OFF: switches the unit on or off. The green LED that lights up in the button shows
if the machine is turned on.
2. Alarm button: used for displaying or manually resetting the alarms and for silencing the
buzzer. If the button light up (red), at least one alarm has been detected.
3. The arrow pointing upwards to manage the currently displayed screen and to set the values
of the control parameters (not back-lit).
4. The arrow pointing downwards to manage the currently displayed screen and to set the
values of the control parameters (not back-lit).
5. Enter button: to confirm the set data. The button is constantly back-lit (yellow) indicating
the presence of mains power.
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 29

11. Guide specifications
LPCA 055-170HMB
The supply, transport to jobsite, installation, commissioning and
start up of an air cooled water chiller with the following technical
characteristics. The unit shall be factory assembled, charged with
R407C refrigerant and factory tested.
The capacity of the unit shall be no less than:
Cooling capacity:
kW
In the following conditions
Ambient air temperature (DB)
ÆC
Entering water temperature
ÆC
Leaving water temperature
ÆC
Heating capacity:
kW
In the following conditions
Ambient air temperature (DB)
ÆC
Relative humidity %
Entering water temperature
ÆC
Leaving water temperature
ÆC
The unit shall operate unhindered within 6 to 15ÆC/25ÆC to 50ÆC
(cool/heat) water outlet temperature, 3.5 to 7ÆC water
temperature difference and 5 up to 45ÆC ambient air temperature.
The structural requirements shall be the following:
UNIT HOUSING
The unit housing shall be fabricated from heavy gauge galvanized
steel sheets, formed to ensure maximum rigidity that shall
guarantee and preserve the unit operation during the years. All
metal parts after fabrication shall be degreased phosphatized, and
electrostatically powder coated with epoxy- polyester RAL 9002
coating of a thickness of 60-70 m. The corrosion resistance
treatment must successfully withstand a salt spray test of 500
hours, according to ASTM B-117. All components shall be
assembled exclusively together using bolts, without welding. The
unit shall have removable access panels, designed in such a
manner as to permit easy access to internal compartments only
by authorized personnel. Electrical and electronic equipment and
components for proper unit operation shall be located in a weather
proof (IP 55) electrical panel with access only via a special key.
COMPRESSOR
Shall be of the hermetic, tandem, scroll type, with low noise and
vibration levels, specially optimized for use with R407c refrigerant.
They shall be equipped with a crank case electrical heater, to separate
refrigerant and oil when the unit is not operating. They shall also
include internal protection against overloading or electrical spikes.
The compressors shall be mounted on special ant vibration rubber
mounts to absorb and eliminate any vibration that can be
generated from the unit base.
AIR HEAT EXCHANGER
The air hear exchangers shall be manufactured from seamless
copper tubes and an outside diameter of 9.52mm (3/8'') of high
quality according to ASTM B 280, and shall be inner grooved to
achieve optimized heat transfer between refrigerant and tube. The
fins shall be manufactured from aluminium. The fins shall be
continuous across the heat exchanger and the fin surface will be
waffle formed and louvered so as to increase the fin rigidity and
heat transfer. The combination of internally grooved copper tubing
and louvered fins must result in a heat transfer performance 30%
superior to that of a conventional coil. The assembly of the finned
pack will be achieved by mechanical expansion in such a way as
to form a perfect mechanical bond with the fins. For his purpose,
the fin holes shall have a peripheral extrusion (collar).
WATER HEAT EXCHANGER
The water heat exchanger shall be of the shell and tube type,
selected from world-class manufacturers specially formed to
achieve the optimized heat transfer, and externally insulated. There
shall be an air vent, drain valve, probes for water temperature
sensors and a differential pressure switch.
The refrigerant liquid pipes shall be internally finned and expanded
in the heat exchanger flange for maximum heat transfer.
AIR HEAT EXCHANGER FANS
The unit shall be equipped with axial type fans, three phase, and 6
poles, internally protected against potential over heating, low noise
and suitable for outdoor installation. The design of the blades and
inlet cones shall be aerodynamic, and the fan motor assembly
shall be perfectly, statically and dynamically balanced allowing a
completely vibration free operation. The fan motor assembly shall
have a protective grid against accidental contact with moving
parts according to ISO. The fan motor shall be of the external rotor
type with permanently lubricated bearings that do not require
servicing. The motor shall be aerodynamically shaped so as not to
interfere with the airflow. The unit shall have the ability to be
equipped with a continuous linear fan speed regulation control
according to coil temperature.
Microprocessor controller
All units shall be equipped with an electronic programmable control
system. This shall allow complete management of all the functions of
the unit and ensures protection of all vital parts. It shall have a
diagnostics function, permitting easy and straightforward
understanding of all the possible failures and malfunctions of the unit.
All functions and indicators shall appear on the LCD screen. Over 150
programmable parameters shall offer complete unit management.
30
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll

Critical parameters that shall require control are:
ñ Start-up shut down time of compressor.
ñ Time delay.
ñ Protection against multiple start-up.
ñ Water pump time delay in reference to compressor operation.
ñ Inlet/outlet water temperature.
ñ Air heat exchanger temprature.
Controlled operational parameters
ñ Water temperature adjustment in the inlet side during
summer operation*.
ñ Water outlet temperature adjustment in summer operation**.
ñ Water temperature adjustment in the inlet side during winter
operation*.
ñ Water inlet temperature adjustment in winter operation*.
ñ Compressor capacity control.
Controlled fault parameters
ñ Low suction pressure per refrigerant circuit.
ñ High discharge pressure per refrigerant circuit.
ñ Compressor overload.
ñ Fan motor overload.
ñ Water pump overload.
ñ Flow switch fault.
ñ Water sensor error due to bad contact or destruction.
ñ Error reading in water outlet low temperature.
ñ Compressor operating hour reading.
In addition the control shall also include
ñ Self diagnostic error of all electronic control sensors.
ñ Remote on/ off switch.
ñ Remote alarm indication capability.
ñ Remote cool/heat selector switch.
ñ History of operation points and fault codes.
ñ Password access code**.
Refrigerant circuit
The units shall have multiple refrigerant circuits depending on the
size one per tandem compressor.
Each circuit shall consists of the following:
ñ Thermal expansion valve.
ñ Filter drier with a replaceable core.
ñ Shut off valves.
ñ 2-way solenoid valve.
ñ Check valve.
ñ Sight glass.
ñ Liquid receiver.
ñ High and low pressure gauges for each circuit, easily
viewed.
ñ Service valves.
ñ Suction accumulator.
ñ 4-way reversing valve.
ñ Unit protection is provided by a high pressure switch with
manual reset, low pressure protection is a low-pressure
switch with auto reset.
ñ Flexible refrigerant pipe on the compressor discharge and
suction lines to avoid vibration and noise.
Note
The consultant may if required ad the below mentioned optional
accessories/functions.
Microprocessor controller options
ñ BMS module interface kit for Bacnet, LonWorks and Trend
connection**.
ñ BMS module interface kit for Modbus connection**.
ñ Connection via internet using a device converting the Carel
protocol to 10Mb/s TCP/IP ethernet protocol.**
ñ Possibility to send and receive messages using a GSM
modem**.
ñ Communication card through RS232 / RS485 serial ports.
ñ Extended memory card for up to five thousands messages**.
ñ Extended memory card 1&2 MB**.
ñ Parallel chiller operation with standard controller for units
with a maximum of eight compressors**.
ñ Microprocessor parameter reprogramming card.
ñ Compressor running current **.
ñ Self diagnostic and adaptive control**.
Other unit accessories/option
ñ R407c or R22 refrigerant.
ñ Condenser fins made of copper or prepainted aluminum, and
Blygold treatment for corrosion protection.
ñ Glycol for chilled water temperature down to –5 o C.
ñ Continuous linear fan speed regulation.
ñ High pressure relief valve on compressor discharge.
ñ A-meter, V-meter.
ñ Compressor noise reduction jacket.
ñ Electrical board ventilation fan.
ñ Water heat exchanger antifreezing electrical heater.
ñ Other custom built options upon request.
* For models 055-085
** For models 090 - 170
Interklima Hydronic systems
LPCA 055-170HMB ñ R407c/Tandem Scroll 31

Engineering Data 2006
Products are manufactured in ISO 9001:2000
certified factories. ISO 9001:2000 pertains to quality
assurance regarding design, development,
manufacturing and installation of products
as well as to services related to the product.
Interklima units comply with the European regulations that
guarantee the safety of the product
Specifications subject to change without notice
INTERKLIMA PRODUCTS ARE DISTRIBUTED BY:
EGB-µ-3-10-05/06