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&1
&1 &1 &1 &1 &1
&1
&1
&1
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&1
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&1 &1
&1 6 6
',6
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&1 6 6
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      
               

&1 &1 &1
HC
7.6.4 For smart grid:
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):
Method A
Method B
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.
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.
(98 6*
&/
&20
+7
&1 &1
NOTE
The wiring of the thermostat should correspond to the
settings of the user interface. Refer to ROOM
THERMOSTAT.
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.
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.
RT1=1# Room Thermostat
RT2=2# Room Thermostat
23
CN24
CN21 CN5 CN28 CN8 CN6
CN16
CN32
CN13
CN15
CN29
CN18
CN42 CN25
CN40 S1 S2
DIS1
CN31
CN41
S3 S4
CN22 CN4
CN35
CN1
CN36
SW9
CN2 CN17
1 2 345 6 78 9 10 11 12 25 26 27 28
453 2 1
13 14 15 16 17 18 19 20 21 22 23 24 29 30 31
32
678 9 10
CN11 CN7 CN30
SMART GRID
EVU SG
CL
COM
HT
CN14 CN19
26


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