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Electrical wiring work
Input contact
No.
Name
1-2
Disuse
3-4
Disuse
5-6
Disuse
7-8
Pump interlock
9-10
Operation ON/
OFF
11-12
13-14
Operation mode
B-T/B
Hot water
15-16
(Cool storage)
mode
Hot water
17-18
(Cool storage)
control standard
Hot water
19-20
(Cool storage)
thermostat signal
To use hot water (cool storage) mode, the function should be activated by Module Control.
36
English
B-T/B
1
2
3
4
5
6
Signal
Function
-
-
-
-
-
-
Signal about pump operation
Pump interlock error (E918)
occurs if ON is not input when
operating pump
Controlling operation ON/OFF
Selecting cool/heat mode
Entering hot water (cool storage)
mode by external control
Zero
Cool + ON: Cool storage
voltage
contact
Heat + ON: Hot water
Control depending on set
temperature when ON
Control depending on external hot
water (cool storage) thermostat
when OFF
When thermostat is set as standard
for hot water (cool storage) mode
Thermo ON when ON (Not
over range of water outlet
temperature)
Thermo OFF when OFF
7
8
9
10
11
12
13
14
15
Contact On
Contact Off
(Short)
(Open)
-
-
-
Pump ON
Pump OFF
Note1)
Note3)
Note2)
Heat
Cool storage/
Cool/Heat
Hot water
Control by set
Control by
temperature
thermostat
Thermo ON
Thermo OFF Usual input
16
17
18
19
20
Signal
Setting
recognition
unit
-
-
-
-
-
-
-
-
-
Usual input
Each unit
Main unit
Usual/
of group
instant input
NOTE4)
Main unit
Cool
Usual input
of group
NOTE4)
Main unit
Usual input
of group
NOTE4)
Main unit
Usual input
of group
NOTE4)
Main unit
of group
NOTE4)
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