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Unit Start Up Procedures
Temporary Shutdown and Restart
Temporary Shutdown is used for control operation,
maintenance or to repair the unit typically less than one
week.
FWD
Power supply
To shut the unit down for a short time, use the following
Capacities
procedure:
Cooling capacity on water (1)
Heating capacity on water (2)
Fan motor
1. Press the STOP key on the TD7. The compressors
Fan power input (3)
will continue to operate and, after unloading for
Current amps (3)
20 seconds, will stop when the compressor contactors
Start-up amps
de-energize.
Air flow
minimum
2. Stop the water circulation by turning off the chilled
nominal
water pump at least one minute after the stop of the
maximum
compressors.
Main coil
Water entering/leaving connections
To restart the unit after a temporary shutdown, enable the
Electric heater (accessory for blower only)
chilled-water pump and press the AUTO key.
Electric power supply
Heating capacity
The unit will start normally, provided the following
Hot water coil (accessory for blower only)
conditions exist:
Heating capacity (4)
G2 filter (filter box accessory)
Quantity
• The UC800 receives a call for cooling and the
Dimensions ( LxWxth)
differential-to-start is above the set point
G4 filter (filter box accessory)
Quantity
• All system operating interlocks and safety circuits are
Dimensions ( LxWxth)
satisfied
Condensate pump (accessory)
Water flow - lift height
Not available for FWD30 and FWD45
CAUTION! Under freezing conditions, the chilled water pump
Sound level (L/M/H speed)
must remain in operation during the full shutdown period of
Sound pressure level (5)
the chiller if the chilled water loop does not contain glycol,
Sound power level (5)
Unit dimensions
to prevent any risk of evaporator freeze-up. Refer to charts 1
Width x Depth
and 2.
Height
Shipped unit dimensions
Width x Depth
Height
Weight
Colour
Recommended fuse size
Unit alone (aM/gI)
Unit with electric heater (gI)
(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
4
48
Technical Data
Extended Shutdown Procedure
The following procedure is to be followed if the system is to
be taken out of service for an extended period of time (i.e.
seasonal shutdown):
08
(V/Ph/Hz)
1. Test the unit for refrigerant leaks and repair as necessary
2. Open the electrical disconnect switches for the chilled-
(kW)
5,2
(kW)
6,3
(type)
3. Close all chilled-water supply valves. Drain the water
(kW)
0,23
(A)
1,1
4. Open the unit main electrical disconnect and unit-
(A)
3,2
(m
/h)
490
3
(m
/h)
820
3
5. At least every three months (quarterly), check the
(m
/h)
980
3
(type)
(Dia)
3/4"
CAUTION! Lock the chilled-water pump disconnects open
(V/Ph/Hz)
230/1/50
to prevent pump damage. Lock the disconnect switch in
(kW)
2/4
the "OPEN" position to prevent accidental startup and
damage to the system when it has been set up for extended
(kW)
6,3
shutdown.
2
(mm)
386x221x8
During an extended shutdown period, especially over the
winter season, the evaporator and free cooling circuits
-
must be drained of water, if the chilled water loop does not
(mm)
-
contain glycol, to prevent any risk of evaporator freeze-up.
(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
230/1/50
8,3
water pump. Lock the switches in the "OPEN" position.
11,9
18,9
2 x direct drive centrifugal
0,46
0,65
from the evaporator.
2,2
5,5
mounted disconnect (if installed) and lock in the "OPEN"
position.
980
1400
1650
2300
1970
2600
refrigerant pressure in the unit to verify the refrigerant
charge integrity.
ISO R7 rotating female
3/4"
1 1/2"
230/1/50 or 400/3/50
400/3/50
8
12
2
486x271x8
586x321x8
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
1133 x 754
1333 x 864
310
46
galvanised steel
8/16
8/16
40 (230V),3*16 (400V)
3*20
20
30
15
18,8
30,1
20,9
38,2
1,04
1,51
3,1
4,7
9,3
14,1
16,5
1800
2700
3000
4500
3600
5400
1 1/2"
1 1/2"
400/3/50
400/3/50
10
12
17,4
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
350
450
650
1333 x 1008
1333*1133
360
460
660
61
76
8/25
8/25
3*25
3*25
CTV-SVX009D-GB
UNT-PRC002-GB
45
5,5
12
2
2
118
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