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Installation
Gas Pipework Installation
Installation of gas piping (to be performed
by the contractor)
The installation rules for public buildings shall be
FWD
followed: refer to the brochure in the "Journal Officiel"
Power supply
number 1477-1 (France only).
Capacities
Cooling capacity on water (1)
The gas supply piping and the gas stop valve shall be
Heating capacity on water (2)
dimensioned to guarantee the gas supply pressure at the
Fan motor
unit's inlet when it is functioning at full capacity.
Fan power input (3)
Current amps (3)
It is recommended to install one expansion valve as
Start-up amps
close as possible to each installed unit. The piping must
Air flow
be self-supporting before the final branch connection
minimum
nominal
to the unit. Allow for a dust trap (filter) upstream of the
maximum
connection to the unit. Search for gas pipe leaks using
Main coil
tensio-active product such as "Teepol" or "1000 bulles"
Water entering/leaving connections
or another equivalent method. Soapy water must not be
Electric heater (accessory for blower only)
used.
Electric power supply
Heating capacity
WARNING!
Hot water coil (accessory for blower only)
Never use a flame to search for leaks. The required gas
Heating capacity (4)
G2 filter (filter box accessory)
pressures at the unit's inlet connection are specified
Quantity
in table «Marking Category of gas section in different
Dimensions ( LxWxth)
countries»
G4 filter (filter box accessory)
Quantity
CAUTION!
Dimensions ( LxWxth)
Condensate pump (accessory)
The piping must not exert any stress on the branch
Water flow - lift height
connection to the burner.
Not available for FWD30 and FWD45
The heating system must be isolated by the gas stop
Sound level (L/M/H speed)
Sound pressure level (5)
valve on the gas supply piping during the pressure tests,
Sound power level (5)
as soon as the pressure exceeds 0.060 bar (60 mbar).
Unit dimensions
Width x Depth
If pressure greater than 0.060 bar is applied to the gas
Height
valve inlet the unit may be damaged. In this case it is
Shipped unit dimensions
mandatory to add a pressure reducer.
Width x Depth
Height
Connect condensation pipe for modulating burner.
Weight
2 stages burner is not supposed produce condensate
Colour
and the small amount of condensate possibly produced
Recommended fuse size
Unit alone (aM/gI)
in particular working conditions will in case evaporate
Unit with electric heater (gI)
Figure 9 - Typical Gas Supply pipework
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
Heat exchanger operating limits:
FWD:
*water temperature: max 100° C
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
KEY
1
Main burner gas solenoid valve
2
Pilot burner gas solenoid valve
3
Pressure stabiliser
4
Safety gas solenoid valve
5
Gas filter (small section)
6
Anti-vibration joint
7
Gas filter (large section)
8
Gas valve
24
4
Technical Data
08
(V/Ph/Hz)
(kW)
5,2
(kW)
6,3
(type)
(kW)
0,23
(A)
1,1
(A)
3,2
Gas connection Ø : male UNI/ISO 228/1 G3/4" tightening torque
150Nm → all range
(m
/h)
490
3
(m
/h)
820
3
(m
/h)
980
3
Smoke outlet features
(type)
Unit is shipped with an outlet adaptor for connection to
(Dia)
3/4"
exhaust pipe. If there is no exhaust pipe used, a terminal
(V/Ph/Hz)
230/1/50
feature located on the accessories should be installed.
(kW)
2/4
Note: Exhaust pipe material has to be chosen carefully to
(kW)
6,3
avoid corrosion.
2
Figure 10 - Exhaust gas terminal installation
(mm)
386x221x8
-
(mm)
-
(type)
(l/h - mm)
(dB(A))
36/40/43
(dB(A))
46/50/53
(mm)
890 x 600
(mm)
250
(mm)
933 x 644
(mm)
260
(kg)
32
(A)
8/16
(A)
16 (2kW),25 (4kW)
12
20
230/1/50
8,3
15
11,9
18,9
2 x direct drive centrifugal
0,46
0,65
2,2
3,1
Max 60 mbar
5,5
9,3
980
1400
1650
2300
1970
2600
ISO R7 rotating female
3/4"
1 1/2"
230/1/50 or 400/3/50
400/3/50
8
10
12
17,4
2
2
486x271x8
586x321x8
2
2
486x264x48
586x314x48
Centrifugal
24 - 500
38/41/44
46/50/53
48/51/54
56/60/63
1090 x 710
1290 x 820
300
350
1133 x 754
1333 x 864
310
360
46
61
galvanised steel
8/16
8/16
40 (230V),3*16 (400V)
3*20
PCH 132
PCH 162 - PCH 212
30
45
18,8
30,1
10m
20,9
38,2
1,04
1,51
4,7
5,5
Pressure reducer
14,1
16,5
1800
2700
3000
4500
3600
5400
1 1/2"
1 1/2"
400/3/50
400/3/50
12
12
22,4
34,5
2
2
586*421*8
586*621*8
2
2
586*414*48
586*614*48
47/52/57
47/52/58
57/62/67
57/62/68
1290 x 970
1290 x 1090
450
650
1333 x 1008
1333*1133
460
660
76
118
8/25
8/25
3*25
3*25
RT-SVX060D-GB
UNT-PRC002-GB
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