8
Terminal No.
TB8-1, 2
Output
Relay contacts output
Operation
• When Dip switch 2-7 is OFF.
The relay closes during compressor operation.
• When DIP switch 2-7 is ON.
The relay closes during reception of cooling or the heating operation signal from the controller.
(Note: It is output even if the thermostat is OFF (when the compressor is stopped).)
9
[Fig. 9.2.1]
[PQHY-P200/250/300 YHM-A]
A
A
B
C
B
a
b
c
C
C
C
[PQHY-P400/450/500/550/600 YSHM-A]
unit1
unit2
A
A
A
1
2
A
E
[PQHY-P650/700/750/800/850/900 YSHM-A]
unit1
unit2
unit3
A
A
A
A
A
1
2
3
A
4
E
E
4
Rated voltage: L1-N: 220 ~ 240V
Rated load: 1A
D
e
d
C
C
A
B
C
D
B
a
b
c
d
C
C
C
C
A
A
B
C
D
a
B
b
c
d
C
C
C
C
8.4
9.2
A
unit1
A
A
1
e
C
unit1
A
A
1
e
C
A
B
D
a
b
c
d
e
C
C
C
C
C
unit2
A
A
2
A
B
E
a
b
c
d
C
C
C
C
unit2
unit3
A
A
A
A
2
3
A
A
4
B
E
E
a
b
c
C
C
C
A : Heat source unit
B : First branch
C : Indoor unit
D : Cap
E : Heat source twinning kit
* The total length of A
A
is less than 10 m [32 ft.]
4
D
e
C
D
d
e
C
C
(A
), A
and
1
2
3