05
The unit have a freeze prevention function that uses the
heat pump or backup heater
（
Customized model
）
to
keep the water system safe from freezing in all
conditions. Since a power failure may happen when the
unit is unattended, It's suggested to use anti-freezing
flow switch in the water system. (Refer to 9.4“Water
piping”).
Domestic hot water tank (field supply)
A domestic hot water tank(with or without booster
heater) can be connected to the unit.
The requirement of the tank is different for different
unit and material of heat exchanger.
①
Heat pump capacity.
②
Required heating capacity (site dependent).
③
Additional heating capacity provided by backup heater.
The booster heater should be installed below the
temperature probe (T5).
The heat exchanger (coil) should be installed below the
temperature probe.
The pipe length between the outdoor unit and tank
should be less than 5 meters.
Tbivalent
Outdoor temperature
Capacity/Load
③
②
①
Temperature
probe(T5)
Coil
Outlet
Tank booster heater
(TBH)
Inlet
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 .
If you choose the built-in backup heater unit, the backup heater can increase the heating capacity during cold outdoor
temperature. The backup heater also serves as a backup in case of malfunctioning and for frozen protection of the outside
water piping during winter time.
Tank
Heat
exchange
C
4~6kW 8~10kW
Volume of tank/L
Heat exchange area/m
2
(Stainless steel coil)
Heat exchange area/m
2
(Enamel coil)
Recommended
Minimum
Minimum
Model
100~250
1.4
2.0
150~300
1.4
2.0
200~500
1.6
2.5
12~16kW
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
Domestic hot water
+12 ~ +65
+5 ~ +25
+12 ~ +60
-25 ~ +43
0.1~0.3MPa(g)
Water flow
4kW
6kW
0.40~0.85m
3
/h
0.40~1.25m
3
/h
8kW
0.40~1.65m
3
/h
10kW
0.40~2.00m
3
/h
12kW
0.70~2.50m
3
/h
14kW
0.70~2.75m
3
/h
16kW
0.70~3.00m
3
/h
V.1
Summary of Contents for ETH080VMA
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