Hitachi RWM-(H)FSN3E Technical Catalogue page 152

11 Installation
configurations

Installation example 6
Installation with alternating space heating + Domestic Hot Water Tank + Boiler combination: Space heating application
with optional Room Thermostat and Domestic Hot Water Tank heated by alternating Heat Pump and boiler combination.
R410a

Installation example 7
Two space heating applications (High & Low water temperature) + Combination with Boiler in parallel: Two space heating
application with a Room Thermostat as an option and Domestic Hot Water Tank heated by Heat Pump and boiler combi-
nation in parallel
R410a
152
TCGB0070 rev.3 - 04/2012
High Tempera-
ture (60ºC)
T
DHWT
EH
DHWT
3wv DHWT
J Two3
H WP3
H20
High Temperature (60ºC) Low Temperature (35ºC)
Two2
WP2
Vmix
J Two3
WP3
H
H20
Item
1
2
3
Low Tempera-
4
ture (35ºC)
5
6
7
8
9
Boiler
11
12
13
Boiler
14
Signal
A
B
C
G
H
J
Item
1
2
3
4
5
6
9
10
11
Boiler
12
13
14
Boiler
Signal
D
E
F
G
H
J
K
Description
Outdoor unit
Indoor unit
Heat exchanger
Electrical heater
Water pump (primary)
Valves (factory supplied)
Domestic Hot Water Tank
(DHWT) (accessory)
3-way valve for DHWT (acces-
sory)
Second temperature kit (acces-
sory)
Boiler (field supplied)
Hydraulic separator (accessory)
Water pump (field supplied)
Hydraulic separator sensor (ac-
cessory)
3-way valve output signal
DHWT electrical heater signal
DHWT sensor signal (accessory)
Boiler output signal
Water pump 3 signal (WP3)
Hydraulic sensor signal (Two3)
(accessory)
Description
Outdoor unit
Indoor unit
Heat exchanger
Electrical heater
Water pump (primary)
Valves (factory supplied)
Second temperature kit (acces-
sory)
Motorized valve (field supplied)
Boiler (field supplied)
Hydraulic separator (accessory)
Water pump (field supplied)
Hydraulic separator sensor (ac-
cessory)
2nd Temperature sensor signal
(accessory)
Secondary water pump signal
Mixing valve signal
Boiler output signal
Water pump 3 signal (WP3)
Hydraulic sensor signal (Two3)
Optional signal