Water Pressure Drop; Electrical Connections - Lennox CWC 090-4P Installation, Operation & Maintenance Manual

WATER PRESSURE DROP

2 PIPES SYSTEM
FLOW FLOW
PRESSURE DROP Kpa PRESSURE DROP Kpa
RATE RATE
l/h l/h
CWC 070-2P CWC 070-2P CWC 090-2P CWC 090-2P
800 800 14 14
900 900 16 16
1000 1000 19 19
1100 1100 22 22
1160 1160 24 24
1200 1200 25 25
1300 1300 28 28
1400 1400 32 32
1450 1450 33 33
1500 1500 35 35
1600 1600 38 38
1700 1700 --- ---
1800 1800 --- ---
1900 1900 --- ---
2000 2000 --- ---
Ethylene glycol % Pressure drop
10% 10%
20% 20%
30% 30%

ELECTRICAL CONNECTIONS

ELECTRICAL CONNECTIONS
VOLTAGE VOLTAGE
MODEL MODEL
50Hz 50Hz
CWC070-2P / CWC070-2P /
230 V / 1Ph 230 V / 1Ph
CWC090-2P CWC090-2P
CWC070-4P / CWC070-4P /
230 V / 1Ph 230 V / 1Ph
CWC090-4P CWC090-4P
CHILLED WATER AND HOT WATER CHILLED WATER AND HOT WATER
CWC 070-2P / CWC 090-2P CWC 070-2P / CWC 090-2P
1 1 2 2 3 3 4 4
0 0 1 1 1 1 2 2 2 2 2 2 3 3 4 4
230V/50HZ 1Ph + N 230V/50HZ 1Ph + N
POWER SUPPLY WIRING POWER SUPPLY WIRING
This equipment must be installed in accordance with national This equipment must be installed in accordance with national
regulations. A suitable means of disconnecting all supply regulations. A suitable means of disconnecting all supply
poles must be provided in the power supply wiring. The poles must be provided in the power supply wiring. The
power supply must incorporate suitably rated fused or power supply must incorporate suitably rated fused or
circuit breaker protection. circuit breaker protection.
9 9
11 11
14 14
16 16
18 18
19 19
22 22
25 25
28 28
29 29
31 31
35 35
38 38
42 42
46 46
As the percentage of glycol increases the standard pump flow decreases
due to the increased pressure characteristics. This means that the cooling
x 1,07 x 1,07
and heating duties will decrease. As a result the pressure drop must be
x 1,12 x 1,12
multiplied by the coefficient shown in the table below.
x 1,20 x 1,20
Nº OF WIRES X SECTION Nº OF WIRES X SECTION
COOL WATER COOL WATER
COOL AND HOT WATER COOL AND HOT WATER
1
2
2
2
3 X 1,5mm
7 X 1,5mm
3 X 1,5mm
3 X 1,5mm
---- ---- ---- ----
THERMOSTAT THERMOSTAT
5 5 6 6 7 7 8 8
RC-311-X2 RC-311-X2
CASSETTE UNIT CASSETTE UNIT
5 5 6 6 7 7 8 8
4 PIPES SYSTEM
PRESSURE DROP Kpa PRESSURE DROP Kpa
FLOW FLOW
RATE RATE
COOL WATER COOL WATER
l/h l/h
CWC 070-4P CWC 070-4P CWC 090-4P CWC 090-4P
400 400 --- ---
500 500 --- ---
555 555 --- ---
600 600 --- ---
700 700 --- ---
745 745 --- ---
800 800 7 7
900 900 9 9
1000 1000 11 11
1100 1100 15 15
1200 1200 16 16
1210 1210 16 16
1300 1300 18 18
1400 1400 21 21
1500 1500 24 24
1600 1600 27 27
1
2
2
2
8 X 1,5mm
2
2
7 X 1,5mm
0 0 1 1
8
HOT WATER HOT WATER
CWC 070-4P CWC 070-4P CWC 090-4P CWC 090-4P
--- --- 14 14
--- --- 20 20
--- --- 24 24
--- --- 27 27
--- --- 35 35
--- --- 41 41
14 14 43 43
16 16 53 53
19 19 --- ---
22 22 --- ---
25 25 --- ---
25 25 --- ---
28 28 --- ---
32 32 --- ---
35 35 --- ---
38 38 --- ---
1 1 Power supply Power supply
Thermostat connections Thermostat connections
2 2
CHILLED WATER CHILLED WATER
CWC 070-4P / CWC 090-4P CWC 070-4P / CWC 090-4P
CWC 070-2P / CWC 090-2P CWC 070-2P / CWC 090-2P
1 1 2 2 3 3 4 4 5 5 6 6
1 1 2 2 2 2 2 2 3 3 4 4 5 5 6 6
230V/50HZ 1Ph + N 230V/50HZ 1Ph + N
--- ---
--- ---
--- ---
11 11
15 15
17 17
19 19
24 24
29 29
34 34
40 40
40 40
46 46
--- ---
--- ---
--- ---
2 2
1 1
7 7 8 8
7 7 8 8