REVERSE CYCLE HEAT PUMP-CHILLER

REVERSE CYCLE
HEAT PUMP-CHILLER
R407C REFRIGERANT
COOLING CAPACITIES
399 kW to 592 kW
HEATING CAPACITIES
353 kW to 588 kW
YRHP Reverse Cycle Heat Pump-Chillers
are applied to two pipe systems and are
designed to provide chilled liquid during
summer (operating as an air cooled chiller)
and warm liquid during winter (operating
as an air to water heat pump).
All units are designed to be located
outside on the roof of a building or at
ground level.
All components including compressors,
valves, piping, refrigerant system
components and the heat exchanger head
are located in an enclosure with hinged
access doors.
Fans are specially designed to operate at
high efficiency and at low sound levels. Fan
motors are the two-speed type. When
operating in the cooling mode fan speed
will reduce as head pressure falls. Typically
low speed operation occurs when ambient
is less than 30 °C. Low fan speed can be
selected for night-time operation in both
cooling and heating modes.
A low sound option has been designed to
achieve the lowest sound levels for units in
this capacity range.
CONTENTS
Specification
Accessories and Options
Operating Limitations
Refrigeration Flow Diagrams
Selection Guide
Pressure Drop Graph
Operation Recommendations
Cooling/Heating Capacities
Sound Power Data
Physical Data
Electrical Data
Electrical Connections
Space Requirements
Dimensions
NOMINAL COOLING/HEATING CAPACITIES TABLE 1
and SOUND PRESSURE LEVELS
Model 0395 0465 0495 0565 0635
Cooling Capacity (kW) 399 460 504 545 592
Heating Capacity (kW) 353 423 435 491 588
Sound (dB(A)) - Fans at low speed 55 55 56 56 56
Sound (dB(A)) - Fans at high speed 59 59 60 60 60
Cooling capacities at 7°C leaving chilled liquid and 35°C ambient.
Heating capacities at 45°C leaving warm liquid and 7°C ambient.
Sound pressure levels are at 10 metres from the unit
FEATURES
Specially designed two speed fans.
High coefficient of performance.
Two refrigerant circuits.
Alternate ambient coil defrost.
Microprocessor controls with visual display of
temperatures, pressures, motor currents,
operating hours and number of starts.
Industrial type serviceable semi-hermetic
reciprocating compressors with replaceable
cylinder liners.
Optional Star/Delta compressor starters.
Separate power and control compartments
with lockable doors and emergency stop
device.
Power compartment optional door interlocked
isolators.
Full factory run test.
Manufactured to ISO 9001/EN 29001.
Optional remote liquid temperature reset.
Remote alarm contacts.
BENEFITS
Low sound operation.
Reduced operating costs.
System stand-by security.
Maintains winter warm liquid temperature.
System data logging and temperature reset capability.
Energy management.
Long life, reliable compressor which can be repaired on
site.
Reduced starting current.
Assists with on-site servicing and operator safety
considerations.
Operator safety considerations.
Verifies quality control and ensures that the unit operates
satisfactorily prior to delivery.
High standard of quality control.
Improved operating efficiency at part load and reduced
operating costs.
Remote alarm notification.
SPECIFICATION
YRHP models have a high coefficient of performance in both cooling and heat pump
modes. All units have two refrigerant circuits and advanced microprocessor
controls.
Operating mode change is achieved by a three-way valve and a solenoid valve
which redirect the refrigerant flow to satisfy the selected operating mode.
The heat pump-chillers shall be completely factory assembled with all
interconnecting refrigerant piping and wiring ready for field installation. Units shall
conform to the European CE/PED code. The unit shall be pressure tested,
evacuated and fully charged with refrigerant and shall include an initial oil charge.
After assembly the unit shall have a functional run test to check unit operation.
Page K.1
Doc. No. PC142/08.04/GB

The unit structure and acoustic enclosure
are galvanised steel coated with
baked-on powder paint (Desert Sand
(RAL 1019)).
Compressors
The unit shall have accessible,
semi-hermetic, reciprocating compressors.
All rotating parts are statically and
dynamically balanced. Isolating valves shall
be provided.
Motor - The compressor motors are
refrigerant gas cooled, with integral
temperature-sensing solid state overload
protection in each phase. The terminal
boxes are to IP55 weather protection.
Starting is by Part Winding or optional
Star/ Delta.
Housing - The compressor housing is
cast iron, and contains: removable
cylinder heads with internal muffling,
suction and discharge service valves,
crankcase sight glass and heater, oil and
suction strainers, and internal relief
valves.
Crankshaft - The crankshaft is ductile
(nodular) iron, drilled for positive oil
distribution, with integral counterweights
for balancing. The main bearings are
insert type, steel-backed babbitt. The
thrust bearing is bronze.
Cylinder Assemblies - Suction and
discharge valves are high-quality,
non-flexing, stainless steel. The pistons
are aluminium alloy with two piston rings.
The connecting rods are aluminium alloy
with integral bearing surfaces on both
ends. Cylinder liners are removable.
Lubrication - The lubrication is force-fed
by a reversible oil pump to all crankshaft
and bearing surfaces through a fine mesh
stainless steel oil strainer.
Capacity Control - Capacity control is
provided by solenoid-actuated, capacity
control valves, which are controlled by the
microprocessor centre. This method
efficiently and effectively matches low
load conditions as required. Gas flow is
sufficient at all times to cool the motor.
Isolation - Each compressor is mounted
on isolator pads to reduce vibration
transmission to the structure.
Refrigerant circuits
An independent refrigerant circuit shall be
provided for each compressor. Each
circuit will use copper refrigerant pipe
formed on bending machines to reduce
the number of brazed joints to provide a
reliable and leak resistant system.
Each circuit shall incorporate all
components necessary for the designed
operation including: liquid refrigerant
accumulator, solenoid, three way,
charging and thermostatic expansion
valves, sight glasses and filter drier.
Refrigerant/Water Heat Exchanger
The heat exchanger is the direct
expansion type, with the refrigerant in the
tubes and water flowing through the
baffled shell. The refrigerant side is
constructed and tested in accordance
with the European CE code.
The water baffles are constructed of
galvanised steel to resist corrosion. The
removable head allows access to the
internally enhanced, seamless, copper
tubes. Flanged liquid connections and
vent and drain connections are included.
The heat exchanger is equipped with a
heater mat controlled by a separate
thermostat. The heater provides freeze
protection down to -29°C ambient. The
heat exchanger is covered with 19 mm
flexible, closed-cell, foam insulation.
Ambient Coils
Coils: Separate ambient coil for each
refrigerant circuit. Each coil shall be
manufactured from seamless, internally
enhanced, copper tubes arranged in
staggered rows and mechanically
expanded into aluminium alloy fins with
full height fin collars. The design working
pressure shall be 31 bar g and tested to
34 bar g.
Fans: Shall be dynamically and statically
balanced, direct drive with corrosion
resistant glass reinforced composite
blades moulded having a full airfoil cross
section, providing vertical air discharge
from extended orifices for efficiency and
low sound. Each fan shall be located in a
separate compartment to prevent cross
flow during fan cycling. Fan guards shall
be of heavy gauge, PVC (polyvinyl
chloride) coated galvanised steel.
Motors: Shall be the high efficiency direct
drive two speed, current overload
protected, totally enclosed (TEAC) type
with double sealed, permanently
lubricated, ball bearings.
Defrost: During winter operation the
ambient coils may be affected by frosting.
Defrost is performed by reversing the
action of the refrigerant circuit into the
cooling mode to allow the ice to be melted
by high pressure refrigerant vapour in a
very short time period. Ambient coils
defrosted alternatively so that one
refrigerant circuit provides heat while the
ambient coil on the other circuit is
defrosted.
Power and Control Panel
All controls and motor starting equipment
necessary for unit operation shall be
factory wired and function tested. The
panel enclosure shall be designed to IP55
(rain/dust tight) and be manufactured
from powder painted galvanised steel.
The panel shall be divided into a common
input section, a power section for each
electrical system and a control section.
Models with Standard Single Point
Power Supply Connection
The common input section shall contain:
A master door interlocked non-fused
disconnect switch for connection of the
customer provided single power supply.
Internal factory wiring to two fuse
protected power sections. The control
supply is derived internally from the door
interlocked non-fused disconnect switch.
(Refer to "Electrical Connection Options"
for details).
The common input section also contains
the control circuit switch disconnect/
emergency stop device, 24 V transformer
for the power supply board, control fuses,
residual current circuit breaker, and
terminals for a remote emergency stop
device.
Each power section contains:
Compressor and fan fuses, compressor
and fan contactors, fan overloads and a
control circuit fuse.
The control section contains:
An On/Off switch, control system keypad
and display, microprocessor board,
power supply board, and relay boards
(which contain the customer connection
terminals).
Microprocessor Controls
The control system uses actual leaving
liquid temperature and the programmed
liquid temperature setpoint and range to
provide chilled and warm liquid
temperature control. The system is
designed to limit compressor/loader
cycling thus saving energy and reducing
wear on mechanical components. The
microprocessor shall have the following
functions and displays:
• A liquid crystal 40 character display with
text provided on two lines and light emitting
diode backlighting for outdoor viewing.
• A colour coded sealed keypad with sections
for Display, Entry, Setpoints, Clock, Print,
Program and Unit On/Off switch.
• The standard controls shall include: mode
change contacts, run signal contacts,
demand load limit from external building
automation system input, remote reset
liquid temperature reset input, unit alarm
contacts, liquid pump control, automatic
and manual reset after power failure,
automatic system optimisation to match
operating conditions, software stored in
non-volatile memory (EPROM) to eliminate
chiller failure due to AC power failure.
• Programmed setpoints shall be retained in
a lithium battery backed RTC memory for a
minimum of 5 years.
The standard unit can be directly
connected to a YORK ISN Building
Automation System via the standard
on-board RS485 communication port.
This option also provides open system
compatibility with other communications
networks (BACNET & LONMARK)
via interface through standard onboard
485 or 232 port and an external YorkTalk
Translator.
Page K.2
Doc. No. PC142/08.04/GB

Electrical Connection Options:
Single Point Power Supply Connection
A terminal block in the common input
section of the panel for connection of the
customer provided single power supply.
Internal factory wiring to two door
interlocked fused disconnect switches or
two door interlocked circuit breakers,
mounted in the power sections. The
control supply is derived internally from
the terminal block.
or
A master door interlocked non-fused
disconnect switch in the common input
section of the panel for connection of the
customer provided single power supply.
Internal factory wiring to two door
interlocked fused disconnect switches or
two door interlocked circuit breakers,
mounted in the power sections. The
control supply is derived internally from
the master non-fused disconnect switch.
Multi Point Power Supply Connection
Two door interlocked fused disconnect
switches, mounted in the power sections,
for connection of the customer provided
power supplies. A non-fused disconnect
switch / emergency stop device
(QCSD/ESD) with termination for the
customer (400 V, 2 Ø, 50 Hz ) control
supply.
or
Two door interlocked circuit breakers,
mounted in the power sections, for
connection of the customer provided
power supplies. A non-fused disconnect
switch / emergency stop device
(QCSD/ESD) with termination for the
customer (400 V, 2 Ø, 50 Hz ) control
supply.
Star/Delta Compressor Starting
Compressors fitted with star/delta wound
motors and contactors for reduced
current starting.
ACCESSORIES AND OPTIONS
Power Factor Correction
Factory mounted passive (static) power
factor correction capacitors to correct
compressor power factors to a target of
0.9 - 0.95 (depending on operating
conditions).
Note: Operating voltage range is reduced
from standard 342 - 440 V to 360 - 440 V
when power factor correction is fitted.
Control Options:
Building Automation System (BAS)
Interface - The addition of a factory
mounted PCB to accept a 4-20 mA,
0-10 Vdc or contact closure input to reset
the leaving liquid temperature from a
building automation system.
The standard unit capabilities include
remote start-stop, remote mode selection,
remote leaving liquid temperature reset
via a PWM input signal or up to two steps
of demand (load) limiting depending on
model.
Note: The standard unit control panel can
be directly connected to a YORK Building
Automated System via the standard on
board RS485 communication port.
Language LCD and Keypad - French,
Italian, Portugese and Spanish unit LCD
read-out and keypad available. Standard
language is English.
Printer - Hand held plug in printer for
obtaining record data of operating and
history data.
Refrigerant/Liquid Circuit Options:
Mechanical Gauge Kit - Factory fitted
mechanical pressure gauges for display
of suction and discharge pressures, one
complete set per system.
10.5 bar (150 PSI) DWP Flow Switch -
Vapour-proof SPDT switch, -29°C to
121°C, with 1" NPT connection for upright
mounting in horizontal pipe (field
mounted).
Refrigerant to Water Heat Exchanger
Mating Flanges - Field installed mating
flanges for heat exchanger water
connections.
Ambient Coil Options:
Copper Fin Ambient Coils - Ambient
coils are constructed with copper fins
(ASTM 287 Test, after 1500 hours 17%
weight loss).
Black Epoxy Coated Aluminium Fin
Ambient Coils - Ambient coils are
constructed with corrosion resistant
epoxy coated aluminium fins (ASTM 287
Test, after 1500 hours 7% weight loss).
Blygold Protective Coating - is
recommended for corrosive applications,
such as coastal locations where salt spray
may hit the ambient coil fins (ASTM 287
Test, after 1500 hours 0% weight loss).
Defrost Drip Trays - Field fitted drip trays
each with a drain connection, drainage
piping to be installed and supplied by
others. Three trays on each side of the
unit on YRHP0395 and 0465, four trays
on each side of the unit on YRHP0495,
0565 and 0635.
Low Sound Option
Component enclosure lined with acoustic
material.
Unit Enclosures:
Wire Enclosure - Welded wire mesh
guards mounted on the ambient coils
(factory mounted).
Vibration Isolation:
25 mm Spring Isolators - Level
adjustable, spring and cage type isolators
for mounting under the unit base rails
(field mounted).
Service Licence - Allows access to
detailed fault diagnosis data.
OPERATING LIMITATIONS TABLE 2
Chilled
Liquid
Warm
Liquid
Refrigerant/
Liquid Heat
Exchanger
Ambient
Coil
Liquid outlet
temperature
Liquid outlet
MODEL YRHP
Water outlet
Temperature spread
Water outlet
Temperature range
temperature
Flow rate
Liquid pressure drop
Maximum refrigerant working pressure
Maximum liquid working pressure
Air entering Cooling Mode
temperature Heat Pump Mode
Fan available static pressure
Power supply voltage 400V, 3 ,50Hz (nominal) (1)
Recommended minimum system water volume
0395 0465 0495 0565 0635
min. max. min. max. min. max. min. max. min. max.
°C
5to15
3.3to8.0
°C
35 to 50
3.3to8.0
l/s
8.6 to 42.6
kPa 5.9 118 5.9 118 5.9 122 5.9 122 5.9 122
barg
31
10
°C
-4 to 42
-12 to 20 (fans full speed), -8 to 24 (fans slow speed)
Pa
0
V
342 to 440
l 2139 2511 2696 2310 2570
Note: (1) Power supply limit is 360 to 440 V when Power Factor Correction Option is fitted.
Page K.3
Doc. No. PC142/08.04/GB

FIGURE 1
Ambient Coil
Refrigerant Circuit No 2
REFRIGERANT FLOW DIAGRAM - COOLING MODE
TEV
NRV
OPEN
CLOSED
High pressure
sub-cooled liquid
High Pressure
superheated vapour
Compressor
Accumulator
OPEN CLOSED
3-Way Valve
OPEN
Cooling Mode
Low pressure liquid refrigerant enters the
refrigerant to water heat exchanger and is
evaporated and superheated by the heat
energy absorbed from the chilled water
passing through the heat exchanger shell.
Low pressure vapour passes through the
three way valve and accumulator before
entering the compressor where pressure
and superheat are increased. Heat is
rejected via the ambient coil and fans.
The fully condensed and subcooled liquid
refrigerant then enters the expansion
valve where pressure reduction and
further cooling takes place before
returning to the heat exchanger.
Low pressure superheated vapour
TEV
Low pressure
sub-cooled
liquid
Refrigerant Circuit No 2
Refrigerant to Water
Heat Exchanger
Heating Mode
Liquid refrigerant enters the ambient coil
and is fully evaporated and superheated
by the energy absorbed from the ambient
air. Low pressure superheated refrigerant
vapour passes through the three way
valve and accumulator and enters the
compressor, where pressure and
superheat are increased. High pressure
superheated refrigerant vapour enters the
refrigerant to water heat exchanger tubes
where heat is rejected to the water
circulating through the shell. The high
pressure liquid refrigerant, leaving the
heat exchanger, enters the thermostatic
expansion valves where the refrigerant
pressure is reduced and subsequently
cooled before returning to the ambient
coil.
Defrost Mode
When ice builds up on the ambient coils
defrost is initiated by operating the
machine in a cooling mode. Each of the
two refrigerant circuits will be defrosted
one at a time. When defrost is operative
the circuit operating in heat pump mode is
in balance with the circuit operating in
defrost (cooling). Therefore, heat energy
is not removed from the hot water system.
FIGURE 2
Ambient Coil
Refrigerant Circuit No 2
Low pressure TEV
sub-cooled
liquid
REFRIGERANT FLOW DIAGRAM - HEATING MODE
High pressure
sub-cooled liquid
NRV
TEV
CLOSED
OPEN
Low pressure superheated vapour
Compressor
High Pressure
superheated vapour
Refrigerant Circuit No 2
Refrigerant to Water
Heat Exchanger
Accumulator
OPEN
OPEN
3-Way Valve
CLOSED
Page K.4
Doc. No. PC142/08.04/GB

DATA REQUIRED
To select a YORK YRHP Reverse Cycle Heat Pump-Chiller, the
following information is required:
1. Required cooling/heating capacity.
2. Design chilled liquid entering and leaving temperatures.
3. Design hot liquid leaving temperature.
4. Design liquid flow rate if one of the temperatures in item 2 are
unknown.*
5. Summer and winter design entering air temperatures.
6. Altitude above sea level.
7. Design refrigerant/water heat exchanger water side fouling
factor.
*Item 4:The same refrigerant to water heat exchanger is used for
chilled liquid in the summer and hot liquid in the winter. The
YRHP cooling capacity normally exceeds the heating capacity at
design ambient conditions. Therefore the water flow should be
calculated using items 1 and 2 and the following formulae:
Cooling capacity kW = l/s chilled liquid x °C range
0.2392
Where:
Range = Entering liquid temperature - Leaving liquid
temperature.
The hot liquid range is calculated as follows:
Hot liquid range °C = Heating capacity x 0.2392
l/s hot liquid
REVERSE CYCLE HEAT PUMP-CHILLER SELECTION
1. Determine the correct size of unit by selecting the model
which most closely matches the required capacity at the
design conditions of leaving liquid temperatures and entering
air temperatures (Tables 5 and 6).
2. Apply the relevant correction factors for fouling factors and
altitude (Tables 3 and 4) to the cooling and heating capacities
and power values (Tables 5 and 6). Ensure the corrected
capacity is still sufficient for requirements.
3. Using the corrected capacity of the selected unit adjust the
design temperature range, or flow rate, to balance the
formulae shown in "Data Required".
4. Physical and electrical data can now be determined from
Tables 8 and 9.
5. Always re-check that selections fall within the design
limitations specified (Table 2).
FOULING FACTORS TABLE 3
Refrigerant to Water Heat Exchanger
Fouling Factor m² °C/kW Capacity Factor Power Factor
0.044 1.000 1.000
0.088 0.987 0.995
0.176 0.964 0.985
0.352 0.995 0.962
ALTITUDE FACTORS TABLE 4
Altitude (m) Capacity Factor Power Factor
0 1.000 1.000
600 0.987 1.010
1200 0.973 1.020
1800 0.958 1.029
2400 0.943 1.038
SELECTION GUIDE
YRHP SAMPLE SELECTION
A YRHP Reverse Cycle Heat Pump-Chiller operating at 35°C
ambient, is required to cool liquid from 12°C to 7°C having a
cooling capacity of 440 kW. A heating capacity of 300 kW is
required at design conditions of 0°C ambient and a leaving hot
liquid temperature of 45 °C.
The liquid fouling factor is 0.044 m² °C/kW and the unit will be
operating at sea level.
A model YRHP0495 gives approximately the required capacity
(table 5). No correction factors apply, therefore, after calculating
the flow rate, the conditions will be as follows:
Cooling capacity
= 445 kW
Cooling mode input power = 154 kW
Chilled liquid temperature = 12°C to 7°C (5°C range)
Chilled and hot liquid flow rate = 21.3 l/s
Heating capacity
= 317 kW
Heating mode input power = 133kW
Hot leaving temperature = 45°C
Hot liquid range = 3.6 °C
Return hot liquid temperature = 41.4 °C.
All values are within the operating limits in Table 2.
From figure 3 pressure drop = 32.2 kPa at 21.3 l/s.
REFRIGERANT/WATER HEAT FIGURE 3
EXCHANGER PRESSURE DROP GRAPH
Pressure Drop (kPa)
120
110
100
90
80
70
60
50
45
40
35
30
25
20
15
10
5
5 10 15 20 25 30 35 40 45
Flow Rate (l/s)
Model
0395
0465
0495
0565
0635
Pressure Drop Calculation
Pressure Drop [kPa] = 0.1057 x (Flow Rate [l/s] 1.8697 )
Pressure Drop [kPa] = 0.0850 x (Flow Rate [l/s] 1.9362 )
Page K.5
Doc. No. PC142/08.04/GB

OPERATION RECOMMENDATIONS
The following recommendations ensure that the maximum cooling/heating duty of the unit is obtained quickly and that nuisance trips
are prevented:
When starting the unit in the ‘Cooling Mode’ or changing from ‘Heating‘ to ‘Cooling’ the operation of any cooling appliance within the
circuit must be inhibited/bypassed, until the chilled liquid returning to the unit has fallen to 20°C.
When starting the unit in the ‘Heat Pump Mode’ or changing from ‘Cooling’ to ‘Heating‘ the operation of any heating appliance within
the circuit must be inhibited/bypassed, until the warm liquid returning to the unit has risen to 35°C.
TABLE 5
YRHP COOLING CAPACITIES
Ambient Coil Entering Air Temperature oC
LWT 20 25 30 35 38 40
42
Model
o C Cool Power Cool Power Cool Power Cool Power Cool Power Cool Power Cool Power
kW kW kW kW kW kW kW kW kW kW kW kW kW kW
5 451 120 430 125 402 131 371 136 354 138 336 140 318 142
6 469 122 445 126 416 132 385 138 364 140 349 142 334 144
YRHP 7 486 124 460 128 429 134 399 139 374 143 363 144 349 146
0395 8 502 126 478 130 448 136 420 143 386 145 378 150 255 148
10 520 130 495 134 468 139 441 145 406 147 392 149 265 99
12 539 134 514 138 489 142 463 147 427 150 284 100 276 101
5 520 150 496 156 464 163 428 170 408 173 388 175 367 178
6 541 153 513 158 479 165 444 172 420 175 403 177 386 180
YRHP 7 561 155 530 160 495 167 460 174 431 178 419 180 403 182
0465 8 579 158 551 163 517 170 485 178 445 181 436 188 294 122
10 600 162 571 167 540 174 509 181 468 184 452 186 306 124
12 622 167 593 172 564 178 534 184 493 187 327 125 318 126
5 571 146 543 151 514 158 486 165 457 170 434 175 413 177
6 594 147 561 153 528 159 495 167 470 172 452 175 434 179
YRHP 7 617 149 580 155 544 161 504 169 483 174 469 177 454 181
0495 8 650 152 611 158 571 164 520 172 507 177 489 180 304 184
10 680 158 642 164 600 171 557 178 530 183 508 186 328 190
12 712 165 671 171 629 178 594 185 555 189 527 192 500 196
5 629 168 594 176 559 185 507 192 493 195 483 198 473 201
6 653 171 615 180 578 188 526 195 507 198 494 202 483 205
YRHP 7 678 175 635 183 596 191 544 198 522 202 507 206 493 209
0565 8 701 179 658 186 615 194 563 202 538 207 521 210 514 213
10 748 185 699 193 651 201 598 208 568 213 536 215 407 154
12 797 192 742 199 688 202 633 215 599 219 449 155 436 159
5 683 205 646 215 608 225 551 234 536 238 525 241 514 244
6 710 209 668 219 628 229 571 238 551 242 537 246 525 249
YRHP 7 736 214 691 223 648 233 592 242 567 246 551 249 536 253
0635 8 762 218 715 227 668 236 612 246 584 253 566 259 411 194
10 813 226 760 235 708 245 650 254 617 260 462 195 443 198
12 866 234 807 243 748 252 689 262 652 267 489 200 474 205
Performance with capacity set-back due to head pressure control. Set-back will also occur at all
ambient exceeding 42°C.
Fans are factory set to operate at low speed at 10 barg refrigerant discharge pressure. This is generally
when operating at all ambients below 20°C.
Fan operation/staging is controlled by head pressure, at ambients below 35°C all fans may not operate.
The total unit fan power, when fans are operating at full speed, is 8 kW for YRHP 0395 and 0465,
or 10.5 kW for YRHP 0495, 0565 and 0635.
Power kW is compressor power only.
Page K.6
Doc. No. PC142/08.04/GB

YRHP HEATING CAPACITIES TABLE 6
Ambient Coil Entering Air Temperature o C
-6
-4
-2
0
2
4
6
8
10
12
14
16
18
Model YRHP 0395 YRHP 0465 YRHP 0495 YRHP 0565 YRHP 0635
LHLT °C 35 40 45 50 35 40 45 50 35 40 45 50 35 40 45 50 35 40 45 50
Heat kW 216 206 197 259 247 236 266 254 243 301 286 274 360 343 328
Power kW 79 81 83 120 124 127 120 123 126 133 137 140 165 170 174
Heat kW 236 226 217 284 271 260 292 279 267 329 315 301 394 377 361
Power kW 98 101 103 122 125 129 121 125 128 134 138 142 167 172 177
Heat kW 257 247 236 226 308 296 284 271 317 304 292 278 357 343 329 314 428 411 394 376
Power kW 100 102 105 109 124 128 131 135 123 127 130 135 137 141 145 149 170 175 180 186
Heat kW 278 255 257 245 333 321 308 294 343 330 317 303 387 372 357 342 463 446 428 409
Power kW 101 104 107 111 126 130 134 138 126 129 133 137 139 143 148 153 173 178 184 190
Heat kW 304 293 281 271 364 351 338 325 374 361 347 334 423 407 392 377 506 488 469 451
Power kW 103 106 110 114 129 133 137 143 128 132 136 142 142 146 151 157 177 182 188 196
Heat kW 333 320 308 296 400 384 369 356 411 395 380 366 463 446 428 412 555 534 513 494
Power kW 106 109 114 118 133 136 142 147 132 135 141 146 146 150 157 162 182 187 195 202
Heat kW 363 349 337 325 436 418 405 390 448 430 416 401 505 485 469 453 605 581 562 461
Power kW 110 113 118 122 137 141 148 153 136 140 147 152 151 156 163 168 188 194 203 172
Heat kW 397 379 368 356 477 455 441 427 490 468 454 439 553 528 512 421 662 632 613 504
Power kW 114 118 123 128 142 147 154 160 141 146 153 159 157 162 170 146 195 202 212 181
Heat kW 426 410 395 326 511 492 474 392 525 506 487 403 593 571 549 454 710 684 658 544
Power kW 118 123 129 111 147 153 161 138 146 152 160 137 162 169 178 153 202 211 222 190
Heat kW 449 433 418 345 539 519 501 414 554 534 515 426 625 602 581 480 748 721 696 575
Power kW 122 128 135 116 153 160 168 145 152 159 167 144 168 176 186 160 210 220 232 199
Heat kW 472 455 439 362 566 546 527 434 582 561 542 446 656 633 611 504 786 758 732 603
Power kW 127 133 140 121 158 167 176 151 157 166 174 150 175 184 194 167 218 230 242 208
Heat kW 494 477 461 380 593 572 554 456 610 588 569 468 688 664 642 529 824 795 769 633
Power kW 131 139 146 126 164 174 183 158 163 173 182 157 181 192 202 174 226 240 253 217
Heat kW 517 499 483 468 621 599 580 562 638 616 596 577 720 695 672 554 862 832 805 663
Power kW 135 145 152 159 169 181 191 200 168 180 189 198 187 200 210 181 233 250 263 226
Maximum hot leaving liquid temperature of 45°C to prevent excessive discharge temperatures.
468 Unit capacity and power reduced due to high discharge pressure limiting.
At ambient temperatures less than +4°C defrost operation is included in the data and capacities are therefore
an average of normal operation and defrost.
Defrost operates on one refrigerant circuit at a time. The fans of the circuit being defrosted do not operate.
At 0°C ambient dry bulb and 85% relative humidity defrost occurs for a total of 6 minutes in each hour.
High speed fan operation can be inhibited manually, at the unit, or remotely.
Low speed fan operation will reduce the heating capacity by 5% and increase the total kW input by 2%
(due to increases in compressor power minus 4.8 kW reduction in fan power).
SOUND POWER DATA TABLE 7
Model YRHP
0395 0465 0495 0565 0635
Standard Unit Fans at Nominal Low Speed (705 rpm) 96 96 97 97 97
Fans at Nominal High Speed 540 rpm) 98 98 99 99 99
Low Sound Unit Fans at Nominal Low Speed (705 rpm) 88 88 89 89 89
Fans at Nominal High Speed 540 rpm) 92 92 93 93 93
Sound Power has been calculated from sound pressure measurements in free field conditions.
Page K.7
Doc. No. PC142/08.04/GB

TABLE 8
PHYSICAL DATA
YRHP
0395 0465 0495 0565 0635
Number of refrigerant circuits
2 2 2 2 2
Unit refrigerant charge (per circuit = Unit / 2)
kg 110 110 130 130 130
Model
PC632Q PC642S PC642S PC833S PC843T
Quantity 2 2 2 2 2
Compressor
Number of cylinders each 6 6 6 8 8
Speed rpm 1450 1450 1450 1450 1450
Oil capacity each I 13.3 13.3 13.3 13.3 13.3
Unit capacity steps 6 6 6 8 8
Model 790 790 920 920 920
Heat Exchanger
Quantity 1 1 1 1 1
Number of circuits 2 2 2 2 2
Water capacity I 230 230 214 214 214
Ambient Coil
Face area m 2 17.84 17.84 23.78 23.78 23.78
Nuber of tube rows 4 4 4 4 4
Number of fans 6 6 8 8 8
Nominal high speed rpm 705 705 705 705 705
Fans
Total air flow at high speed m 3 /s 37.5 37.5 50 50 50
Nominal low speed rpm 540 540 540 540 540
Total air flow at low speed m 3 /s 30 30 40 40 40
Weight
Shipping kg 5590 5590 6380 6380 6380
Operating kg 5820 5820 6594 6594 6594
Length mm 6021 6021 7240 7240 7240
Dimensions (1) Width mm 2330 2330 2330 2330 2330
Height mm 2489 2489 2489 2489 2489
(1) Length does not include door interlocked disconnect switch/circuit breaker handles.
(1) Width does not include drip trays or header enclosure.
(1) Height does not include anti-vibration mounts.
TABLE 9
ELECTRICAL DATA
Nominal Running Amps Maximum Running Amps
Locked Rotor Conditions (2)
@ 380 V @ 400 V @ 380 V @ 400 V @Min.V (1)
Star for Star/Delta Part Wind
Model
Without Power Factor Correction
Current Amps Current Amps
YRHP With Optional Power Factor Correction fitted
@ 380V @ 400V @ 380V @ 400V
0395
0465
0495
0565
0635
261
325
324
350
438
263
321
322
346
430
333
381
414
434
518
327
373
404
422
502
392
442
491
519
603
229
289
290
316
392
223
281
280
306
378
301
347
378
400
470
291
333
364
384
450
346
394
439
463
535
207
247
247
247
304
218
260
260
260
320
458
549
549
549
689
482
578
578
578
725
Note: (1) Voltage limits (Min. V) on units without Power Factor Correction is 342-440 V
Note: (1) Voltage limits (Min. V) on units with Optional Power Factor Correction is 360-440 V
Figures in table based on the higher of the two modes - Nominal: Cooling, - Maximum: Heating
Note: (2) Locked rotor conditions are per compressor
Page K.8
Doc. No. PC142/08.04/GB

ELECTRICAL CONNECTIONS - POWER SUPPLIES
Standard Single Point Power Supply
One supply to master non-fused disconnect switch (XCSISD)
with internal power distribution to fuses, control supply to non-fused
disconnect switch (QCSD/ESD) derived internally.
1PS
FFF
2PS
CIS
FFF
QCSISD
U V W
QCSD/ESD
PE 3 4
PE
L1 L2 L3
QRESB
3 50 Hz 380/400 V
DESIGNATION
AMB
ARB
CS
CIS
F
PE
PS
QCSD/ESD
QCB
QCSISD
QCSITB
QRESB
QSDF
EMS
DESCRIPTION
MICROPROCESSOR BOARD
RELAY BOARD
CONTROL SECTION
COMMOMN INPUT SECTION
FUSE
PROTECTIVE EARTH
POWER SECTION
CONTROL CIRCUIT SWITCH DISCONNECT
/ EMERGENCY STOP DEVICE
CIRCUIT BREAKER
COMMON SUPPLY INPUT SWITCH DISCONNECT
COMMON SUPPLY INPUT TERMINAL BLOCK
REMOTE EMERGENCY STOP BUTTON
SWITCH DISCONNECT FUSED
EMS INTERFACE CARD (OPTION)
Single Point Power Supply (Option)
One supply to a common terminal block (QCSITB) with
internal power distribution to fused disconnect switches (QSDF)
or circuit breakers (QCB),
control supply to non-fused
disconnect switch (QCSD/ESD) derived internally.
Single Point Power Supply (Option)
One supply to master non-fused disconnect switch (QCSISD)
with internal power distribution to fused disconnect
switches (QSDF) or circuit breaker (QCB),
control supply
to non-fused disconnect switch (QCSD/ESD) derived internally.
1PS
2PS
1PS
2PS
QSDF/QCB
CIS
QSDF/QCB
QSDF/QCB
CIS
QSDF/QCB
U V W
QCSITB
U V W
U V W
QCSISD
U V W
U V W
PE
QCSD/ESD
3 4
U V W
PE
QCSD/ESD
3 4
L1 L2 L3
PE
QRESB
L1 L2 L3
PE
QRESB
3 50 Hz 380/400 V
3 50 Hz 380/400 V
Multi Point Power Supply (Option)
Two supplies to fused disconnect switches (QSDF) or circuit breakers (QCB)
with separate control supply to non-fused disconnect switch (QCSD/ESD).
+5V
GND
RXD
TXD
DSR
DTR
RS232
1PS
CS
AMB ARB
EMS
2PS
QSDF
or
QCB
CIS
3
4
QSDF
or
QCB
PE
U V W
PE
QCSD/ESD
PE
U V W
QRESB
PE
L1 L2
3 50Hz
380/400V
L3
PE
L1 L3
2 50Hz
380/400V
PE
L1 L2 L3
3 50Hz
380/400V
Page K.9
Doc. No. PC142/08.04/GB

ELECTRICAL CONNECTIONS - CONTROL
1PS
CS
AMB
CIS
ARB
EMS
2PS
34
33
36
35
37
38
39
30
31
32
41
40
}
}
}
}
}
}
}
Liquid Pump Start
Unit Run Signal
Open on Alarm
Close on Alarm
Open on Alarm
Close on Alarm
Bivalent Heat Signal
}
}
System
N° 1
System
N° 2
16 13 14 13 17 15 13 11 13 12 10 13
Flow Switch
System 2 Remote Run Interlock
Fan Full Speed Inhibit
System 1 Remote Run Interlock
PWM Remote Temperature Reset or
Remote Unload Second Stage
Remote Mode Selection Closed for Heating
Remote Unload First Stage
SPACE REQUIREMENTS
2.0 m
1.3 m
1.3 m
2.0 m
2.0 m
2.0 m
2.0 m
2.0 m
1.3 m
2.0 m 3.0 m
2.0 m
2.0 m
2.0 m
Page K.10
Doc. No. PC142/08.04/GB

DIMENSIONS
YRHP 0395 and 0465
523
2330
761
1118
CL
VESSEL
VIEW A
SEE DETAIL A
VIEW B
A
2169
2489
B
2694
2224
INLET
SEE DETAIL B
6021
12 HOLES Ø 22 EQUI. SPACED
ON P.C.D. OF 295mm
OUTLET
SEE DETAIL B
Ø 340
Ø 209,1
DETAIL A
POWER SUPPLY CABLE ENTRY
GLAND PLATE 286 X 235
2 x DIN 200/PIN 16
DETAIL B
Page K.11
Doc. No. PC142/08.04/GB

DIMENSIONS (continued)
YRHP 0495, 0565 and 0635
523
2330
761
1118
CL
VESSEL
VIEW A
SEE DETAIL A
VIEW B
A
2169
2489
B
2694
2224
INLET
SEE DETAIL B
7240
12 HOLES Ø 22 EQUI. SPACED
ON P.C.D. OF 295mm
OUTLET
SEE DETAIL B
Ø 340
Ø 209,1
DETAIL A
POWER SUPPLY CABLE ENTRY
GLAND PLATE 286 X 235
2 x DIN 200/PIN 16
DETAIL B
Page K.12
Doc. No. PC142/08.04/GB