Air-to-water Heat Pump Split Versati
62
SPLIT TYPE
4 Installation Instructions
4.1 Installation Examples
CASE 1:Connecting Under-floor Coil for Heating and Cooling
Outdoor unit
Indoor unit
Underfloor coil
FCU 1
Radiator
FCU 2
2-way valve
(Field supplied)
Control line
Remote room thermostat
(Field supplied)
Low-temp line
By-pass valve
(Field supplied)
Hi-temp line
Notes
(a)
The two-way valve is very important to prevent dew condensation on the floor and radiator while cooling
mode;
(b)
Type of thermostat and specification should be complied with installation of this manual;
(c) The bypass valve must be installed to secure enough water flow rate, and should be installed at the
collector.
(d)
When the FCU and the underfloor coil are used at the same time, performance of the underfloor coil is
satisfied firstly. When performance of the FCU is required, then “Floor config” s hould be set to “Without”.
CASE 2: Connecting Sanitary Water Tank
Outdoor unit
Indoor unit
City water
Booster heater
Control line
Low-temp line
3-way valve
(Field supplied)
By-pass valve
(Field supplied)
2-way valve
(Field supplied)
Remote room thermostat
(Field supplied)
Hi-temp line
Under floor coil
FCU 1
Radiator
Hot water
Sanitoary water tank
FCU 2
Notes
(a)
The two-way valve is very important to prevent dew condensation on the floor and FCU while cooling mode.
