Highline 260i EC Waterside Fan Coil Unit - Diffusion Group

Features:
• Electronically
Commutated (EC)
fan motor
• Specific Fan Power
of 0.16 to 0.34 at
NR35
• Insignificant
fan heat gain
• Designed to operate
below NR35 at
External Static
Pressures of up to
50Pa
• Variable speed
Fan adjustment
• Ceiling and
Underfloor
installation
• Low surface
temperature on
electric element
• Low Maintenance
Highline 260i EC Waterside Fan Coil Unit

Highline 260i EC Waterside Fan Coil Unit
Fan Coil Unit
The most popular waterside control fan
coil unit in the UK for the past 15
years, now available with EC fans
having low Specific Fan Powers.
Initially designed to be fitted into a
ceiling void, the flexibility also allows
the unit to be installed underfloor.
Furthermore an alternative to the
standard design is the Highline 260d,
which incorporates a detachable
discharge plenum and enables a more
flexible discharge arrangement.
Chassis
Units are manufactured from 1.0 -
1.6mm hot dipped galvanised steel and
are constructed without the use of self
tapping screws. All thermal and
acoustic lining is CFC and HCFC free
and class ‘O’ fire rated. All bearings
and moving surfaces will operate
without requiring further lubrication.
All electrical components and electrical
wiring comply with the current edition
of the I.E.E. regulations. Each unit is
factory tested to ensure that it will
continue to meet its specified
performance with the minimum of
maintenance, throughout its life.
Fans
The fans are of the double inlet, double
width centrifugal type. The scrolls are
manufactured from galvanised mild
steel, complete with forward curved
aluminium or galvanised steel bladed
impellers. All fan and motor assemblies
are statically and dynamically balanced
to prevent the transmission of vibration
to the fan coil unit casing. Each fan
and motor assembly has thermal
overload protection fitted, via
imbedded thermistors or the
commutation electronics. The motors
comply to BS 5000-11 and BS EN
60034. The motor frame is totally
enclosed and fitted with maintenance
free sealed for life ball bearings.
Motors are insulated to BS 2757 class
B (minimum) and tested to BS EN
61000-3-2 for Harmonic Distortion
and BS EN 61000-3-3 for Flicker.
Heat Exchangers Coils are
manufactured from 0.35 mm thick
solid drawn copper tubes, mechanically
expanded into accurately pre-formed
collars in rippled aluminium fins. The
coils are arranged for single or multicircuit
operation via headers. Each
coil is fitted with a manual air vent and
drain point. All coils are factory tested
to a minimum of 35 bar and are
suitable for operating pressures of up to
12 bar static head. Coils are fitted
with 15 mm o/d plain copper tails.
Condensate Drip Tray
The condensate drip tray is manufactured
from hot dipped galvanised steel, welded
at each corner. The tray is then degreased
before anti-condensation insulation is
applied to all internal and external
surfaces. The tray is fitted with 15 mm o/
d plain brass connection (22 mm o/d
optional). The tray has a built in gradient
to ensure correct drainage of condensate.
Temperature Controls
(WATERSIDE)
Temperature control shall be by
modulation of the control valves
allowing either chilled or heated water
to flow through the appropriate coil.
Air Filter Options
• Mesh Filter - The filter is
permanent and is manufactured
from a fine woven mesh of
galvanised steel wire, welded to a
rigid galvanised steel frame. It can
be vacuum cleaned in-situ, or
periodically removed for washing
when necessary
• Media type filter - Filters are EU2
to Eurovent 4/5 and manufactured
from a synthetic media secured to a
wire metal frame and fitted
with
handles for
ease of cleaning and
replacement.
Discharge/ Inlet Plenum
The discharge and inlet plenums are
attenuated and thermally lined with a
CFC and HCFC free class ‘O’ fire
retardant non-migratory foam, which
is both vermin and rot proof. The
density of the foam is 11 kg/m³
thereby helping to reduce the total
weight of the fan coil unit.
Electric Heat Element (if required)
The element is manufactured from
stainless steel sheath with spiral
wound stainless steel fins to minimise
surface temperature. It is located
upstream of the fan(s) to evenly
distribute the heat to the final
discharge spigots. Each unit shall
incorporate a manual reset high
temperature cut-out and a Pressure
Differential Switch or Current Switch,
wired to prevent operation in the
event of a fan failure.

THERMAL
PERFORMANCE
ELECTRIC DATA/
FAN PERFORMANCE
Model & Size
Air Vol. l/s
Speed
Sens. Duty
Watts
Total Duty
Watts
CHW Flow
Rate l/s
Hyd. Res
kPa
Heat Duty
Watts
LPHW
Flow Rate
l/s
Hyd. Res.
kPa
Running
Current (A)
Power
Absorbed (W)
HIGHLINE 260i EC
WH6CH
Specific Fan
Power (SFP)
W/I/s
109 Extra low 1494 1895 0.075 3.63 815 0.018 0.28 0.17 23 0.21
122 Low 1667 2112 0.084 4.42 898 0.02 0.34 0.23 31 0.25
143 Low + 1911 2392 0.095 5.55 984 0.022 0.4 0.27 41 0.29
162 Medium 2129 2642 0.105 6.65 1060 0.024 0.46 0.4 55 0.34
167 Medium + 2186 2707 0.107 6.95 1080 0.024 0.47 0.44 59 0.35
175 High 2277 2812 0.112 7.45 1112 0.025 0.5 0.5 66 0.38
HIGHLINE 260i EC
WH9CH
152 Extra low 2093 2662 0.106 4.19 1200 0.027 0.7 0.23 30 0.20
190 Low 2586 3269 0.13 6.1 1422 0.032 0.96 0.3 42 0.22
221 Low + 2951 3693 0.147 7.62 1556 0.035 1.14 0.39 55 0.25
274 Medium 3584 4438 0.176 10.67 1798 0.04 1.49 0.57 80 0.29
282 Medium + 3675 4541 0.18 11.13 1829 0.041 1.54 0.62 86 0.30
304 High 3923 4828 0.192 12.45 1914 0.043 1.67 0.74 104 0.34
HIGHLINE 260i EC
WH12CH
216 Extra low 3091 4016 0.159 9.92 1699 0.038 1.5 0.32 42 0.19
235 Low 3326 4295 0.17 11.21 1784 0.04 1.65 0.4 54 0.23
262 Low + 3659 4687 0.186 13.16 1904 0.042 1.86 0.5 67 0.26
307 Medium 4210 5343 0.212 16.72 2102 0.047 2.23 0.7 93 0.30
326 Medium + 4463 5658 0.225 18.57 2206 0.049 2.44 0.82 113 0.35
335 High 4569 5783 0.229 19.33 2243 0.05 2.52 0.89 121 0.36
HIGHLINE 260i EC
WH13CH
236 Extra low 3353 4338 0.172 7.86 1934 0.043 2.15 0.34 45 0.19
265 Low 3738 4817 0.191 9.52 2103 0.047 2.51 0.4 54 0.20
317 Low + 4376 5572 0.221 12.45 2340 0.052 3.06 0.51 70 0.22
363 Medium 4937 6239 0.248 15.32 2547 0.057 3.58 0.7 99 0.27
381 Medium + 5184 6552 0.26 16.77 2658 0.059 3.87 0.78 110 0.29
431 High 5774 7241 0.287 20.16 2863 0.064 4.45 1.06 143 0.33
HIGHLINE 260i EC
WH15CH
246 Extra low 3475 4480 0.178 6.57 2057 0.046 2.78 0.32 42 0.17
280 Low 3980 5151 0.204 8.5 2336 0.052 3.52 0.37 49 0.18
324 Low + 4589 5927 0.235 11.01 2625 0.058 4.36 0.47 65 0.20
380 Medium 5282 6749 0.268 14 2886 0.064 5.2 0.64 90 0.24
415 Medium + 5714 7265 0.288 16.04 3047 0.068 5.75 0.77 111 0.27
440 High 6021 7633 0.303 17.57 3163 0.07 6.15 0.88 124 0.28
HIGHLINE 260i EC
WH18CH
350 Extra low 4901 6288 0.25 8.75 2971 0.066 6.61 0.47 60 0.17
382 Low 5378 6921 0.275 10.46 3239 0.072 7.74 0.51 67 0.18
449 Low + 6237 7966 0.316 13.59 3599 0.08 9.4 0.65 90 0.20
538 Medium 7333 9277 0.368 18.06 4020 0.089 11.52 0.9 129 0.24
585 Medium + 7910 9966 0.395 20.65 4241 0.094 12.71 1.01 142 0.24
647 High 8703 10936 0.434 24.55 4566 0.102 14.55 1.24 177 0.27
Based on following Design Condition:
Return Air Temperature(summer): 23 o C db and 16.4 o C wb
Chilled Water Temperature: 6/12 o C
Return Air Temperature(winter): 21 o C
LPHW Temperature: 82/71 o C
External Static Pressure: 30Pa
Electric heat is available on all units. For further information please contact us.
For any alternative design conditions please contact the Cooling Department at Diffusion.

ACOUSTIC PERFORMANCE
SOUND POWER LEVELS
Model & Size
Air Volume l/s
Speed
Acoustic Measuring Position
OCTAVE BAND FREQUENCY
63 125 250 500 1K 2K 4K
NR
HIGHLINE 260i EC
WH6CH
109 Extra low
122 Low
143 Low +
162 Medium
167 Medium +
175 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
42 48 43 45 34 28 25
47 46 38 31 32 22 21
41 49 45 47 37 31 29
48 48 39 32 34 24 23
43 51 47 49 40 34 32
48 50 43 34 37 27 26
46 52 49 51 41 37 35
51 52 45 36 39 29 29
45 53 49 51 42 37 36
50 52 46 37 41 30 30
47 54 52 54 44 39 36
52 56 49 38 42 31 30
28
31
33
35
36
37
HIGHLINE 260i EC
WH9CH
152 Extra low
190 Low
221 Low +
274 Medium
282 Medium +
304 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
47 48 43 44 34 27 21
46 46 41 30 29 19 17
46 49 45 47 37 30 25
47 48 43 32 32 21 20
49 51 47 49 39 33 28
48 50 45 34 35 23 23
46 53 50 52 43 38 34
49 53 48 38 39 28 28
46 54 51 53 44 39 35
51 53 49 38 40 29 29
47 55 53 54 45 40 37
51 54 50 39 41 30 31
28
30
32
35
36
37
HIGHLINE 260i EC
WH12CH
216 Extra low
235 Low
262 Low +
307 Medium
326 Medium +
335 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
45 48 43 45 33 27 22
47 47 40 31 30 18 17
48 49 46 48 36 30 26
45 48 42 32 33 22 20
45 51 48 50 39 33 29
49 50 44 35 35 24 22
47 52 51 51 41 36 34
49 53 48 38 39 28 27
48 54 53 53 44 38 36
51 54 49 39 41 29 29
48 54 53 54 44 39 37
51 54 50 39 41 30 30
28
30
33
35
36
37
HIGHLINE 260i EC
WH13CH
236 Extra low
265 Low
317 Low +
363 Medium
381 Medium +
431 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
48 49 45 45 34 27 22
45 47 41 30 28 18 18
47 50 46 47 36 29 24
47 49 43 32 30 20 19
48 52 48 49 38 32 28
48 50 44 34 33 23 22
48 54 51 52 42 35 32
49 53 47 37 37 27 26
51 55 53 53 43 37 34
50 54 48 38 38 28 27
52 56 54 54 45 39 37
52 56 50 41 41 32 31
28
30
32
35
36
37
HIGHLINE 260i EC
WH15CH
246 Extra low
280 Low
324 Low +
380 Medium
415 Medium +
440 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
45 50 45 45 33 26 21
46 47 42 31 29 19 17
44 51 46 46 34 28 22
46 48 43 34 31 20 18
44 52 48 49 37 30 26
46 49 46 35 34 22 21
46 53 49 50 40 31 27
51 53 49 37 37 26 25
52 55 53 53 43 37 34
52 54 50 39 40 28 27
52 56 53 54 44 38 36
51 55 51 40 41 30 28
28
30
32
35
37
38
HIGHLINE 260i EC
WH18CH
350 Extra low
382 Low
449 Low +
538 Medium
585 Medium +
647 High
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
INLET CASE RADIATED
DISCHARGE
52 48 46 44 35 26 20
46 47 41 33 28 22 18
52 49 47 45 35 28 22
48 49 43 35 29 23 20
50 50 49 47 37 31 25
50 50 45 35 29 21 20
52 53 52 51 41 35 31
50 52 48 37 33 24 25
51 55 53 52 42 36 33
52 53 48 39 35 26 26
51 55 54 53 44 38 35
53 55 50 41 38 29 29
28
30
32
35
36
37
OCTAVE BAND FREQUENCY
63 125 250 500 1K 2K 4K
CORRECTIONS FOR DISCHARGE INDUCT
8 4 1 0 0 0 0
Correction to be added to Discharge only, to convert to Discharge Induct.
The discharge sound power levels shown above are based on all front spigots connected directly to an unlined
plenum/grilles and measurements taken 1.5m from grille at 45 o .
The NR levels shown above are for guidance only and are based on a typical office layout. We would recommend
that advice is taken from an Acoustic Consultant to verify actual project noise levels.
To achieve guide NR35 it is recommended that a maximum velocity of 2.5m/s per outlet is not exceeded.

Highline 260i EC Waterside Fan Coil Unit
UNIT A SPIGOTS
(No Off)
6 855 4
9 1075 5
12 1230 5
13 1408 5
15 1655 6
18 2040 7
RECTANGULAR SPIGOTS
ALSO AVAILABLE

Options
• Underfloor installation available
• Electric Heat(Stainless Steel sheathed element) with Thermal Cut-out
• Differential Pressure Switch for heating element protection(Standard)
• Current Switch for heating element protection(Optional)
• Power Correction Module
• Speed Controller/ Speed Limiter
• 24v Transformer
• Condensate pumps
DIFFUSION Unit Coding System
UNIT MODEL FAN TYPE CONTROL APPLICATION OPTIONS UNIT SIZE Chassis
HIGHLINE 260i EC - Electronically commutated A - Airside H - Horizontal E - ELECTRIC 06 CH
W - Waterside UF - Underfloor CO - COOLING ONLY 09
e.g.
HIGHLINE 260i EC-W-H-09-CH
HIGHLINE 260i, with EC fans, Waterside Horizontal, 4 pipe, size 9, chassis
HIGHLINE 260i EC-W-UF-CO-09-CH
HIGHLINE 260i, with EC fans, Waterside Underfloor, Cooling Only, size 9, chassis
HIGHLINE 260i EC-W-H-E-09-CH
HIGHLINE 260i, with EC fans, Waterside Horizontal, 2 pipe, Electric Heat, size 9, chassis
12
13
15
18
‘
Established in 1960,
Diffusion has over 40 years
experience in producing
environmental solutions
via the manufacture of heating,
air conditioning and
ventilating products.
‘
Diffusion Environmental Systems
47 Central Avenue, West Molesey, Surrey KT8 2QZ
Tel: (+44) 020 8783 0033 Fax: (+44) 020 8783 0140
Email: diffusion@etenv.co.uk www.diffusion-group.co.uk
Diffusion Environmental Systems have a policy of continuous
development. We therefore reserve the right to alter information
contained in this leaflet, without prior notice.