Mitsubishi Heavy Industries HMK60, Installation Manual

Page: 238 / 288

32
Electrical installation
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.
HSB140
HSB140 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.
<HSB140 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.
1 2 3 4 5 6
SMO
Externt
L
N
External
RC-HY20/40
AA2-X4
QN10
LEK
L N 1 1 0 2 3 4 PE
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.
4 1 5 1 6 1 7 1
SMO
Externt
L
L
N
N
External
RC-HY 20
AA2-X4
LEK
L N 1 1 0 2 3 4 PE
AA2-X4
RC-HY20
QN12
CAUTION
The relay outputs can have a max load of 2 A
at resistive load (230V AC).
<HSB140 with RC-HY40>
Connect the port 5, 6 and 7 on X4 terminal on AA2 board on
RC-HY40 to the port PE, N and L on circulation pump
(EB101-GP12) respectively. Control signal cable is connected
between the port 7 and 8 on X4 terminal on AA3 board on RC-
HY40 and GND and PWM on circulation pump respectively as
shown below.
SMO
E
xternt
PE
L
N
External
RC-HY 40
AA2-X4
EB101-GP12
L N 1 1 0 2 3 4 PE
1 2 3 4
LEK
1 2 3 4
AA2-X4
4 5 6 7 8 9
RC-HY40
0 1 9 8 7 6 5
SMO
E
xternt
External
RC-HY 40
AA3-X4
EB101-GP12
PWM GND
RC-HY40
AA3-X4
RC-HY40 can connect and control up to two pumps. Connect
the port 12, 13 and 15 on X4 terminal on AA2 board on RC-
HY40 to the port PE, N and L on second circulation pump
(EB102-GP12) respectively. Control cable is connected
between the port 5 and 6 on X4 terminal on AA3 board on RC-
HY40 and GND and PWM on circulation pump respectively as
shown below.
AA2-X4
1 1 2 1 3 1 4 1 5 1 6 1
SMO
E
xternt
PE
L
N
External
RC-HY 40
EB102-GP12
L N 1 1 0 2 3 4 PE
1 2 3 4
LEK
1 2 3 4
AA2-X4
RC-HY40
3 4 5 6 7 8
SMO
E
xternt
External
RC-HY 40
AA3-X4
EB102-GP12
PWM GND
RC-HY40
AA3-X4