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Idiomas disponibles
H
Method C
Double zone control
RT1=1# Room Thermostat RT2=2# Room
Thermostat
Method A
(Mode set control)
RT can control heating and cooling individually, like the
controller for 4-pipe FCU. When the indoor unit is connected
with the external temperature controller, user interface FOR
SERVICEMAN set ROOM THERMOSTAT to MODE SET：
A.1 When unit detect voltage is 12VDC between CL and COM, the
unit operates in the cooling mode.
A.2 When unit detect voltage is 12VDC between HT and COM, the
unit operates in the heating mode.
A.3 When unit detect voltage is 0VDC for both side(CL-COM, HT-
COM) the unit stop working for space heating or cooling.
A. 4 When unit detect voltage is 12VDC for both side(CL-
COM, HT-COM) the unit working in cooling mode.
Method B:
(One zone control)
RT provide the switch signal to unit. User interface FOR
SERVICEMAN set ROOM THERMOSTAT to ONE ZONE：
B.1 When unit detect voltage is 12VDC between HT and COM, unit
turns on.
B.2 When unit detect voltage is 0VDC between HT and COM,
unit turns off.
Method
C
（Double zone control）
Indoor unit is connected with two room thermostat, while user
interface FOR SERVICEMAN set ROOM THERMOSTAT to
DOUBLE ZONE:
C.1 When unit detect voltage is 12VDC between HT and COM ,
zone1 turn on. When unit detect voltage is 0VDC between HT
and COM, zone1 turn off.
C.2 When unit detect voltage is 12VDC between CL and COM,
zone2 turn on according to climate temp curve. When unit
detect voltage is 0V between CL and COM, zone2 turn off.
C.3 When HT-COM and CL-COM are detected as 0VDC, unit turn
off.
C.4 when HT-COM and CL-COM are detected as 12VDC, both
zone1 and zone2 turn on.
The wiring of the thermostat should correspond to
the settings of the user interface. Refer to ROOM
THER-MOSTAT.
Power supply of machine and room thermostat must
be connected to the same Neutral Line .
When ROOM THERMOSTAT is not set to NON, the
indoor temperature sensor Ta can't be set to valid
Zone 2 can only operate in heating mode, When cooling
mode is set on user interface and zone1 is OFF,"CL" in
zone2 closes, system still keeps 'OFF'. While installation,
the wiring of thermostats for zone1 and zone2 must
be correct.
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2
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a) Procedure
Connect the cable to the appropriate terminals as shown in
the picture.
Fix the cable with cable ties to the cable tie mountings to
ensure stress relief.
7.6.4 For smart grid:
C
The unit has smart grid function, there are two ports on PCB
to connect SG signal and EVU signal as following(SG is
municipal power, and EVU is free power):
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CN1
CN2
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1. When EVU signal is on, and SG signal is on, as long as the DHW
mode is set to be valid, the heat pump and IBH will operate in DHW
mode at the same time automatically.When T5 rises to 60°C,the DHW
mode will exit and switch to cooling/heating mode normally.
2. When EVU signal is on, and SG signal is off, as long as the DHW
mode is set to be valid and the mode is on,the heat pump and IBH will
operate in DHW mode at the same time automatically,when
T5≥Min(T5S+3,60),the DHW mode will exit and switch to cooling/
heating mode normally.(T5S is the setting temperature)
3.When EVU signal is off, SG signal is on, the unit operates normally.
4. When EVU signal is off, and SG signal is off, the unit operates as
below: The unit will not operate DHW mode, and the IBH is invalid,
disinfect function is invalid. The max running time for cooling/heating
is "SG RUNNING TIME", then unit will be off.
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NOTE
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DIS1
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S1
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CN17
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CN7
CN30
V.2
CN24
CN16
CN13
CN15
CN18
CN31
CN35
CN36
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