Air-to-water Heat Pump Split Versati
13
SPLIT TYPE
(c)
Sanitary water tank should be equipped with internal electric heater to secure enough heat energy in the
very cold days.
(d)
The 3-Way valve is automatic controlled by the unit. It switches to water tank loop for the water heating
mode and switches to floor/FCU loop at the space cooling/heating mode.
(e)
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”.
(f) For the solar heating system, only the control port is available and relative accessories are absent.
2 Model Selection
2.1 Speculations of Power Supply
Power Supply
208/230VAC 60Hz
GRS-CQ16Pd/NaE-D
2.2 Operation Conditions
Capacities and power inputs are based on the following conditions (floor heating /cooling )
a. Cooling conditions
b. Heating conditions
Indoor Water Temp 73.4°F/64.4°F(23°C/18°C); Indoor Water Temp 86°F/95°F(30°C/35°C);
Outdoor Air Temp 95°F DB/75.2°F WB(35°C DB/24°C WB)
Outdoor Air Temp 44.6°F DB/42.8°F WB(7°C DB/6°C
WB)
Capacities and power inputs are based on the following conditions (FCU or radiator)
a. Cooling conditions
b. Heating conditions
Indoor Water Temp 53.6°F/45°F(12°C/7°C);
Indoor Water Temp 104°F/113°F(40°C/45°C);
Outdoor Air Temp 95°F DB/75.2°F WB(35°C DB/24°C WB) Outdoor Air Temp 44.6°F DB/42.8°F WB(7°C DB/6°C
WB)
2.3 Flowchart of Model Selection
Calculate the load
Preliminary selection
of unit
Finish unit selection
Actual capacity
＞
Load
Calculate the load
YES
NO
