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2 GENERAL INTRODUCTION
These units are used for both heating and cooling applications and domestic hot water tanks.They can be
combined with fan coil units, floor heating applications, low temperature high efficiency radiators, domestic
hot water tanks and solar kits, which are all field supplied.
A wired controller is supplied with the unit .
The backup heater（Optional） can increase the heating capacity at pretty low outdoor temperature. And
it also serves as backup service in case of malfunction of heat pump or avoiding freezing of outdoor water
pipes.
Maximum length of communication wirings between the unit and the controller is 50m.
Power cords and communication wiring must be laid out separately, they can not be placed in the same
conduit. Otherwise, it may lead to electromagnetic interference. Power cords and communication
wirings should not come in contact with the refrigerant pipe so as to prevent the high temperature pipe
from damaging wirings.
Communication wirings must use shielded lines.Including indoor unit to outdoor unit PQE line, indoor
unit to controller HA and HB line.
The relationship between capacity（Load）and
ambient temperature
Capacity/Load
③
②
Tbivalent
· Heat pump capacity.
· Required heating capacity (site dependent).
· Additional heating capacity provided by backup
heater.
· Room thermostat (field supplied)
Room thermostat can be connected to the
unit(room thermostat should be kept away from
heating source when selecting the installation
place).
Solar kit for domestic hot water tank(field supplied)
An optional solar kit can be connected to the unit.
Operation range
Outlet water (Heating mode)
Outlet water (Cooling mode)
Ambient temperature
Water pressure
5kW
7kW
9kW
Water flow
12kW
14kW
16kW
①
Ambient temperature
+15 ~ +65ºC
+5 ~ +25ºC
-25 ~ +43ºC
0.1~0.3MPa
0.40~1.25m
/h
3
0.40~1.65m
/h
3
0.40~2.10m
/h
3
0.70~2.50m
/h
3
0.70~2.75m
/h
3
0.70~3.00m
/h
3
NOTE
In cooling mode, the water flowing temperature
(TW_out) range in different outdoor tempera-
ture (T4) is listed below:
T4
43
19
10
-5
5 11
Operation range by heat pump with possible
limitation and protection.
In heating mode, the water flowing temperature
(T1) range in different outdoor temperature (T4)
is listed below:
T4
35
30
24
19
5
0
-15
-20
-25
5 12
25
If IBH/AHS setting is valid,only IBH/AHS turns on;
If IBH/AHS setting is invalid,only heat pump turns on,
limitation and protection may occur during heat pump
operation.
Operation range by heat pump with possible limitation and
protection.
Heat pump turns off,only IBH/AHS turns on.(IBH can heat
the water temperature up to 65ºC, AHS can heat the water
temperature up to 70ºC)
Maximum inlet water temperature line for heat pump
operation.
05
TW_out
25
50
T1
40 45 50 5560 65 70
V.1
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