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Hydro Unit
Installation Manual
6
Main components of Hydro Unit
■
Exploded view and description for Hydro Unit
▼
Fig.6-01
1 : Expansion vessel
2 : Temperature sensor (for Heat pump outlet -TWO)
3 : Pressure sensor
4 : Heat exchanger
5 : Flow sensor
6 : Temperature sensor (for refrigerant -TC)
7 : Temperature sensor (for water inlet -TWI)
8 : Drain nipple
9 : Water inlet connection
10 : Refrigerant liquid connection
11 : Air relief valve
12 : Overpressure preventive valve (0.43 MPa (4.3 bar))
13 : Thermal protector (auto)
14 : Temperature sensor (for water outlet THO)
15 : Thermal protector (Single operation)
16 : Water pump
17 : Backup heater (3 kW, 3 kW x 2, 3 kW x 3)
18 : Manometer
19 : Water outlet connection
20 : Refrigerant gas connection
1
2
3
4
6
7
10
13
15
20
5
8
9
19
16
18
11
12
17
14
■
E-box layout
▼
Fig.6-02
CN21
Digital input terminals
CN20
TTW & TFI sensor
terminal connection
TB02
Hot water cylinder
power supply
connection
TB03
Back up heater
power supply
connection
CN22
Digital output terminals
CN23
230VAC 50Hz
output terminals
TB04
second remote
controller
terminal connection
TB01
Hydro unit
power supply connection
13-EN
14-EN
Summary of Contents for HWT-1101XWHM3W-E
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