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Maintenance
End user Routine Maintenance
Some of the periodic maintenance functions for the
unit can be undertaken by the end user. This includes
replacing (disposable) or cleaning (permanent) air filters,
FWD
cleaning unit cabinet, cleaning the condenser coil, and
Power supply
carrying out a general unit inspection on a regular basis.
Capacities
Cooling capacity on water (1)
WARNING! Disconnect the power supply before
Heating capacity on water (2)
removing access panels to service the unit. Failure to
Fan motor
disconnect power before attempting any servicing can
Fan power input (3)
Current amps (3)
result in severe injury or death.
Start-up amps
Air flow
Air filters
minimum
nominal
It is very important for the central duct system air filters
maximum
Main coil
to be kept clean.
Water entering/leaving connections
These should be inspected at least once a month when
the system is in constant operation (in new buildings,
Electric heater (accessory for blower only)
the filters should be checked every week for the first
Electric power supply
Heating capacity
four weeks). If disposable-type filters are used, they
Hot water coil (accessory for blower only)
should only be replaced with ones of the same type and
Heating capacity (4)
size.
G2 filter (filter box accessory)
Quantity
The economizer fresh air filter should be inspected
Dimensions ( LxWxth)
(washed if needed) at least once a month.
G4 filter (filter box accessory)
Quantity
Note: Do not attempt to clean disposable filters.
Dimensions ( LxWxth)
Permanent filters can be cleaned by washing with a
Condensate pump (accessory)
mild detergent and water. Ensure that the filters are
Water flow - lift height
Not available for FWD30 and FWD45
thoroughly dry before reinstalling them in the unit (or
Sound level (L/M/H speed)
duct system).
Sound pressure level (5)
Sound power level (5)
Note: Replace permanent filters when required or at
Unit dimensions
least annually if washing fails to clean them, or they
Width x Depth
show signs of deterioration. Be sure to use the same
Height
type and size as were originally installed.
Shipped unit dimensions
Width x Depth
Height
Condenser coil
Weight
Colour
Unfiltered air circulates through the unit's condenser
Recommended fuse size
coil and can cause the coil's surface to become clogged
Unit alone (aM/gI)
Unit with electric heater (gI)
with dust, dirt, etc. To clean the coil, brush the coil
surface in the direction of the fins with a soft bristled
(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
brush.
(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.
Keep all vegetation away from the condenser coil area.
(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:
Hot water coil (option)
FWD:
*water temperature: max 100° C
Stop the unit. Do not disconnect the main supply to the
*absolute service pressure: min 1 bar/max 11 bars
unit. This will permit the anti-frost protection to continue
Accessories - Hot water coil:
to operate, and avoid water to freeze-up in the coil.
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
48
4
Technical Data
08
(V/Ph/Hz)
(kW)
5,2
(kW)
6,3
(type)
(kW)
0,23
(A)
1,1
(A)
3,2
(m
/h)
490
3
(m
/h)
820
3
(m
/h)
980
3
(type)
(Dia)
3/4"
(V/Ph/Hz)
230/1/50
(kW)
2/4
(kW)
6,3
2
(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)
Service Technician Maintenance
Before the cooling season, your service technician may
examine the following areas of your unit:
•
Filters, for cleaning or replacement
12
•
Motors and drives system components
230/1/50
•
Economizer gaskets, for replacement if necessary
8,3
•
Condenser coils, for cleaning
11,9
18,9
•
Safety controls, for mechanical cleaning
2 x direct drive centrifugal
0,46
0,65
•
Electrical components and wiring, for replacement
2,2
and tightening of connections as necessary
5,5
•
Condensate drain, for cleaning
980
1400
•
Unit duct connections, to ensure they are physically
1650
2300
sound and sealed to the unit casing
1970
2600
•
Unit mounting support, to ensure that it is sound
ISO R7 rotating female
•
The unit, to ensure there is no obvious deterioration
3/4"
1 1/2"
Before the heating season, your service technician may
230/1/50 or 400/3/50
400/3/50
examine the following areas of your unit:
8
•
The unit, to ensure that the condenser coil can
12
receive the required airflow (that the condenser fan
grille is not obstructed)
2
486x271x8
586x321x8
•
The control panel wiring, to verify that all electrical
connections are tight, and that wire insulation is
2
intact
486x264x48
586x314x48
Centrifugal
24 - 500
Troubleshooting Alarm and Warnings
The optional control display has the ability to provide
38/41/44
46/50/53
the service personnel with some unit diagnostics and
48/51/54
56/60/63
system status information.
1090 x 710
1290 x 820
1. Step the system through all of the available modes,
300
and verify operation of all outputs, controls, and
1133 x 754
1333 x 864
modes. If a problem in operation is noted in any
310
mode, proceed to troubleshooting search.
46
2. Refer to the individual component test procedures if
galvanised steel
other microelectronic components are suspect.
8/16
8/16
3. In additon review carefully the components which
40 (230V),3*16 (400V)
3*20
can lead to the alarm: temperature sensor, zone
temperature sensor, clogged filter switch
20
30
15
18,8
20,9
1,04
3,1
4,7
9,3
14,1
1800
2700
3000
4500
3600
5400
1 1/2"
1 1/2"
400/3/50
400/3/50
10
12
17,4
22,4
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
350
450
1333 x 1008
1333*1133
360
460
61
76
8/25
3*25
3*25
RT-SVX060D-GB
UNT-PRC002-GB
45
30,1
38,2
1,51
5,5
16,5
12
34,5
2
2
650
660
118
8/25
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