Wire connection
REQUIREMENT
• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Pass the wires through the bushing of wire connection holes of the hot water module.
• Keep a margin (Approx. 100 mm) on a wire to hang down the electrical control box at servicing or other purpose.
• The low-voltage circuit is provided for the remote controller. (Do not connect the high-voltage circuit)
• Remove the front panel of the hot water module by taking off the mounting screws (2 positions).
• Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.
(Do not apply tension to the connecting section of the terminal block.)
• Mount the front panel of the hot water module without pinching wires.
Front
panel
R
S
(L)
(N)
COM S1 S2 S3 S4 S5
U1 U2 A B
119-EN
Power supply wiring port
Control wiring port
External signal wiring port
R
S
(L)
(N)
Earth wire
Power supply wire
Side D (Space: 8.5 mm)
Side C (Space: 4 mm)
Earth Screw
Cord clamp
(For power supply
wire)
* Cable clamp can be attached on left side.
Wire
Specification
type
Cabtyre
3-core stranded
Power supply wire
cable
wire 2.5 mm²
Cabtyre
4-core stranded
Remote controller wire
cable
wire 1.5 mm²
Control wire
Output signal function wire
Wiring for Flow selector unit (FS unit) for SHRM-e
Connect communication wire of FS unit to terminal A, B (no polarity) of Hot Water Module.
when the Hot water module connects to SHRM-e system.
(Unit: mm)
NOTE
• In case of connecting at least one Hot Water Module in SHRM-e system, all of FS units in the system should be
Single port type FS unit (long piping model) or Multiport type FS unit.
Remote controller wiring
• Strip off approx. 9 mm the wire to be connected.
▼
Wiring diagram
Output signal function wiring
Cable clamping
position
Connect the following output signals from the hot water module.
Side D
Terminal
block No.
Side C
COM
DC12V (COM)
S1
Defrosting output (COM-S1)
S2
Line heater output (COM-S2)
S3
S4
Heating thermostat ON output (COM-S4)
S5
Pump output (COM-S5)
– 60 –
U1 U2 A B
Power supply wire
Control wire
Terminal block for
remote controller wiring
Terminal block
of hot water module
A
A
Remote controller unit
B
B
Remote controller wire
(Locally procured)
Function
Common for connector S2 ~ S5
DC12V
Relay coil is less than 16mA.
DC12V
Relay coil is less than 16mA.
-
DC12V
Relay coil is less than 16mA.
DC12V
Relay coil is less than 16mA.
Communication wire (FS unit)
Remote controller wire
Comments
-
120-EN