Mitsubishi Electric CITY MULTI PQHY-P72-Z KMU-A Manuel D'installation page 3

8
[Fig. 8.1.1]
C
A
Heat source unit sample installation
8
[Fig. 8.4.1]
TB8
3
A
4
[Fig. 8.4.]
A
TB8
X
1
Operation
ON signal
2
3
Pump interlock
4
A
TB8
X
1
Operation
ON signal
2
3
Pump interlock
4
8
Terminal No. TB8-1, 2
Output Relay contacts output
Operation • When setting No.917 for Dip switch 4 (Dip switch 6-10 is ON) is OFF.
The relay closes during compressor operation.
1 2
1 0
• When setting No.917 for Dip switch 4 (Dip switch 6-10 is ON) is ON.
The relay closes during reception of cooling or the heating operation signal from the controller.
(Note: It outputs even if the thermostat is OFF (when the compressor is not operating).)
B
F
A : Main circulating water pipe
D : Water outlet (upper)
G : Water inlet (lower)
D
E
G
H
63PW
B
B
TM1
52P TM1 TM2
TM2
C
Rated voltage: ~ 208/230V
Rated load: 1A
SW4 0: OFF, 1: ON
3 4 5 6 7 8 9 10
1 0 1 0 0 1 1 1
8.1
B : Shutoff valve
E : Refrigerant pipes
H : Drain pipe
8.4
A : Short-circuit wire (Connected before delivery from manufacturer)
B : Pump interlock circuit connection (field-supplied)
L1 L2
~ 208/230V
MCB
A : Heat source unit
52P
B : Control panel (field-supplied)
C : To next heat source unit
MP
8.4
C : Shutoff valve
F : Y-type strainer