Hitachi YUTAKI S80 Series - Page 143

11. Installation conguration
TCGB0075 rev.0 - 11/2012
143
11

Boiler complement (Installation example 6)
Installation with alternating space heating and Boiler combination + optional Domestic Hot Water Tank: Space heating
application with optional Room Thermostat heated alternating Heat Pump and boiler combination. Optional Domestic Hot
Water Tank is heated by Heat Pump. The LCD is integrated with the DHW Tank or supplied as accessory if indoor unit is
alone. The LCD is integrated with the DHW Tank or supplied as necessary accessory if indoor unit is alone.
N O T E
• When YUTAKI S80 is working in Alternating Bi-valent system (with boiler), a hydraulic separator or buffer tank
has to be used to ensure proper hydraulic balancing. Use the ATW-HSK-01 accessory if needed. Additional
Water pump (WP3) and water sensor (Two3) (ATW-WTS-02Y accessory) are also necessary.
• When YUTAKI S80 is working in Alternating Bi-valent system (with boiler) install 2 water check valves (non-
return) at the water inlet of the indoor unit and boiler. Use the ATW-WCV-01 accessory if needed.
Item Description
1 Outdoor unit
2 Indoor unit
3 R134a compressor
4 Water pump
5 3-way valve
6 T-branch
7 Shut-off valves (eld supplied)
8 Domestic hot water tank
9
Security valve
(DHWT-SWG-01 accessory)
10
DHWT heater
(integrated with DHWT)
Item Description
11
LCD controller
(integrated with DHWT)
12
Second temperature kit
(ATW-2KT-01 accessory)
13 Motorized valve (eld supplied)
14
Aquastat
(ATW-AQT-01 accessory)
15 Boiler (eld supplied)
16
Water check valve
(ATW-WCV-01 accessory)
17
Hydraulic separator
(ATW-HSK-01 accessory)
Item Description
A
2nd Water Temperature sensor
(ATW-WTS-02 accessory)
B Secondary water pump
C Mixing valve
D Hydraulic separator
E Shut-off valve
F
Universal water sensor (Two3)
(ATW-WTS-02Y accessory)
G
Water pump 3 (WP3)
(eld supplied)
12
11
8
10
D
E
9
15
Domestic
Water
(return)
B
C
A
High Temperature (80ºC)
Low Temperature (35ºC)
1
7
4
6
5
3
2
DHW Tank
G
F
Boiler
Boiler
Signal
17
13
16
14