In heating mode, the maximum leaving water flow temperature
(T1stoph) that heat pump can reach in different outdoor
temperature (T4) is listed below:
In DHW mode, the maximum domestic hot water tempera-
ture(T5stop) that heat pump can reach in different outdoor
temperature(T4) is listed below:
The unit have a freeze prevention function that uses the heat
pump 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).
In cooling mode, the minimum leaving water flow tempera-
ture(T1stoph) that the unit can reach in different outdoor
temperature(T4) is listed below:
COOLING MODE
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
≤10
10
14
8
18
6
11
9
15
7
19
6
12
9
16
7
20
5
13
8
17
6
≥21
5
-25
35
-20
40
-15
50
34
56
-10~30
60
-24
35
-19
42
-14
52
35
55
-23
35
-18
44
-13
54
31
59
-22
37
-17
46
-12
56
32
58
-21
39
-16
48
-11
58
33
57
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
Outdoor temp. (°C)
Water flow temp. (°C)
05
①
Heat pump capacity.
②
Required heating capacity (site dependent).
③
Additional heating capacity provided by backup heater.
Tbivalent
Outdoor temperature
Capacity/Load
③
②
①
Solar kit for domestic hot water tank(field supply)
An optional solar kit can be connected to the unit.
Remote alarm kit (field supply) can be connected to
the unit.
Operation range
HEATING MODE
If you add the backup heater in the system, the backup heater
can increase the heating capacity during cold outdoor tempera-
tures. The backup heater also serves as a backup in case of
malfunctioning and for freeze protection of the outside water
piping during winter time. The capacity of backup heater for
different units is listed below.
Outdoor temp. (°C) -25~-21 -20~-14 -15~-11 -10~-4
DHW Water flow
temp. (°C)
DHW Water flow
temp. (°C)
DHW Water flow
temp. (°C)
35
40
45
48
55
55
53
53
50
48
Outdoor temp. (°C)
0~4
5~9
10~14
-5~-1
Outdoor temp. (°C)
15~19
25~29 30~34
20~24
50
50
35~39 40~43
48
45
Outdoor temperature(°C)
Water flow temperature (°C)
Outdoor temperature(°C)
Water flow temperature (°C)
DOMESTIC WATER HEATING MODE
Outdoor temperature(°C)
Water flow temperature (°C)
No heat pump operation, IBH or AHS only
Water flow temperature drop or rise interval
If IBH/AHS setting is valid, only IBH/AHS turns on;
If IBH/AHS setting is invalid, only heat pump turns on;
V.2
Summary of Contents for ETH220VMA
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