40
Electrical installation
<HMK100 with RC-HY40>
Connect the port 5, 6 and 7 on X4 terminal on AA2 board to
the port L, N and PE for GP12 on X2 terminal on HMK100
respectively (same as with RC-HY20).
Also, connect the port 7 and 8 on X4 terminal on AA3 board to
the port PWM and GND for GP12 on X1 terminal on HMK100
respectively as shown below.
HMK100
RC-HY 40
X1
PWM
GP12
GND
PWM
GND
11019876 45
AA3-X4
RC-HY40
AA3-X4
X1
RC - HY
Connection between controller and 3-way valve
(QN10/QN12)
3-way valve is used for switching heating / hot water
production (QN10), or switching heating / cooling (QN12).
Install appropriate valves according to the system structure on
site.
HSB100
HSB100 is not equipped with 3-way valve. Install the valves
on right position according to the diagram and connect wires
on appropriate port according to the type of controller.
<HSB100 with RC-HY20>
• 3-way valve for Heating / Hot water (QN10)
Connect the N, Control and L wire on 3-way valve to the port
2, 3 and 4 on X4 terminal on AA2 board on RC-HY20/40
respectively as shown below.
123456
SMO
Externt
L
N
External
RC-HY20/40
AA2-X4
QN10
LEK
LN 1 1 0 2 34PE
AA2-X4
RC-HY20/40
• 3-way valve for Heating / Cooling (QN12)
QN12 can be controlled with potential free variable relay.
Connect L and Control wire on 3-way valve to the port 15 and
16 on X4 terminal on AA2 board on RC-HY20 respectively.
Also, connect L and N wire to power supply as shown below.
Additional setting is necessary in menu 5.4. See Menu system
for details.
41516171
SMO
Externt
L
L
N
N
External
RC-HY 20
AA2-X4
LEK
LN 1 1 0 2 34PE
AA2-X4
RC-HY20
QN12
CAUTION
The relay outputs can have a max load of 2 A
at resistive load (230V AC).
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