Mitsubishi Electric CITY MULTI PQHY-P-TLMU-A Installation Manual page 3

8
[Fig. 8.1.1]
C
A
E
Heat source unit sample installation
8
[Fig. 8.4.1]
TB8
3
4
[Fig. 8.4.2]
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 (
The relay closes during compressor operation.
SW4 0: OFF, 1: ON
1 2 3
1 0 1
The relay closes during reception of cooling or the heating operation signal from the controller.
B
F
A : Main circulating water pipe
D : Water outlet (upper
G : Water inlet (lower
D
G
H
A
63PW
A
L1
B
Flow switch:FS
52P
Flow switch:FS
C
Rated voltage: ~ 208/230V
Rated load: 1A
4 5 6 7 8 9 10
0 1 0 0 1 1 1
8.1
B : Shutoff valve
E : Refrigerant pipes
H : Drain pipe
8.4
L2
~ 208/230V
MCB
A : Heat source unit
52P
B
C : To next heat source unit
MP
8.4
is OFF.
ON.
C : Shutoff valve
F : Y-type strainer
3