Table of Contents
Advertisement
Evaporator Waterside
Table 37 – Recommended Low Evaporator Refrigerant Cutout (LRTC) and % Glycol for RTAF chillers size 090 to 245
FWD
Glycol
Solution
Power supply
Capacities
Percentage
Freeze
Cooling capacity on water (1)
(weight %)
Point (°C)
Heating capacity on water (2)
Fan motor
0
0
Fan power input (3)
Current amps (3)
2
-0.6
Start-up amps
Air flow
4
-1.3
minimum
5
-1.7
nominal
maximum
6
-2.1
Main coil
Water entering/leaving connections
8
-2.8
Electric heater (accessory for blower only)
10
-3.6
Electric power supply
12
-4.5
Heating capacity
Hot water coil (accessory for blower only)
14
-5.4
Heating capacity (4)
G2 filter (filter box accessory)
15
-5.8
Quantity
16
-6.3
Dimensions ( LxWxth)
G4 filter (filter box accessory)
18
-7.4
Quantity
Dimensions ( LxWxth)
20
-8.4
Condensate pump (accessory)
Water flow - lift height
22
-9.6
Not available for FWD30 and FWD45
24
-10.8
Sound level (L/M/H speed)
Sound pressure level (5)
25
-11.4
Sound power level (5)
Unit dimensions
26
-12.1
Width x Depth
Height
28
-13.5
Shipped unit dimensions
30
-14.9
Width x Depth
Height
32
-16.5
Weight
Colour
34
-18.2
Recommended fuse size
35
-19.1
Unit alone (aM/gI)
Unit with electric heater (gI)
36
-19.9
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
38
-21.8
(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.
40
-23.8
(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.
42
-25.9
Heat exchanger operating limits:
44
-28.1
FWD:
*water temperature: max 100° C
45
-29.3
*absolute service pressure: min 1 bar/max 11 bars
46
-30.5
Accessories - Hot water coil:
*water temperature: min. +2° C/max. 100° C
48
-32.9
*absolute service pressure: min 1 bar/max 11 bars
50
-35.6
CAUTION!
1. Additional glycol beyond the recommendations will
adversely affect unit performance. The unit efficiency
will be reduced and the saturated evaporator
temperature will be reduced. For some operating
conditions this effect can be significant.
2. If additional glycol is used, then use the actual %
glycol to establish the low refrigerant cutout set point.
4
102
Technical Data
Ethylene Glycol
Low
refrigerant
Minimum
08
temperature
Recommended
(V/Ph/Hz)
Cutout LRTC
LWTC
(kW)
5,2
(°C)
(°C)
(kW)
6,3
(type)
-1.9
1.7
(kW)
0,23
(A)
1,1
-2.4
1.1
(A)
3,2
-3.2
0.4
(m
/h)
490
3
-3.6
0
(m
/h)
820
3
(m
/h)
980
3
-3.9
-0.4
(type)
-4.7
-1.2
(Dia)
3/4"
-5.5
-1.9
(V/Ph/Hz)
230/1/50
-6.4
-2.8
(kW)
2/4
-7.3
-3.7
(kW)
6,3
-7.7
-4.2
2
-8.2
-4.7
(mm)
386x221x8
-9.3
-5.7
-
(mm)
-
-10.3
-6.8
(type)
(l/h - mm)
-11.5
-7.9
-12.7
-9.2
(dB(A))
36/40/43
-13.3
-9.8
(dB(A))
46/50/53
-14
-10.4
(mm)
890 x 600
-15.4
(mm)
250
-11.8
-16.8
-13.3
(mm)
933 x 644
(mm)
260
-18.4
-14.8
(kg)
32
-20.1
-15
-20.6
-15
(A)
8/16
(A)
16 (2kW),25 (4kW)
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
Mono Propylene Glycol
12
Solution
temperature
Freeze
Cutout LRTC
8,3
Point (°C)
11,9
2 x direct drive centrifugal
0
0,46
2,2
-0.6
5,5
-1.2
980
-1.5
1650
1970
-1.8
ISO R7 rotating female
-2.4
3/4"
-3.1
230/1/50 or 400/3/50
-3.8
8
-4.6
12
-4.9
2
-5.3
486x271x8
-6.2
2
486x264x48
-7.1
-8
-9.1
38/41/44
-9.6
48/51/54
-10.1
1090 x 710
-11.3
300
-12.6
1133 x 754
310
-14
46
galvanised steel
-15.5
-16.3
8/16
40 (230V),3*16 (400V)
-17.1
-18.8
-20.7
-22.7
-24.8
-25.9
-27.1
-29.5
-32.1
3. The minimum low refrigerant cutout set point allowed
is - 20.6°C.This minimum is established by the
solubility limits of the oil in the refrigerant.
4. With glycol application, ensure that there is no
fluctuation of brine flow versus Order Write Up
value, as a reduction of flow will adversely affect unit
performance and behaviour.
Low
refrigerant
20
30
Minimum
230/1/50
Recommended
15
18,8
(°C)
LWTC (°C)
18,9
20,9
-1.9
1.7
0,65
1,04
3,1
4,7
-2.4
1.1
9,3
14,1
-3.1
0.5
1400
1800
-3.4
0.2
2300
3000
2600
3600
-3.7
-0.2
-4.3
-0.8
1 1/2"
1 1/2"
-5
-1.4
400/3/50
400/3/50
-5.7
-2.2
10
12
-6.4
-2.9
17,4
22,4
-6.8
-3.3
2
2
-7.2
-3.7
586x321x8
586*421*8
-8.1
-4.5
2
2
586x314x48
586*414*48
586*614*48
-8.9
-5.4
Centrifugal
24 - 500
-9.9
-6.3
-10.9
-7.4
46/50/53
47/52/57
-11.4
-7.9
56/60/63
57/62/67
-12
-8.4
1290 x 820
1290 x 970
1290 x 1090
-13.2
350
450
-9.7
-14.5
-10.9
1333 x 864
1333 x 1008
360
460
-15.9
-12.3
61
76
-17.4
-13.8
-18.2
-14.6
8/16
8/25
3*20
3*25
-18.9
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
-20.6
-15
UNT-PRC002-GB
RLC-SVX19E-GB
45
30,1
38,2
1,51
5,5
16,5
2700
4500
5400
1 1/2"
400/3/50
12
34,5
2
586*621*8
2
47/52/58
57/62/68
650
1333*1133
660
118
8/25
3*25
Advertisement
Table of Contents
