Operation Conditions; Flowchart Of Model Selection; Design Principle; Selection Of The Underfloor Coils - Gree VERSATI III Series Service Manual

2.2 Operation Conditions

Capacities and power inputs are based on the following conditions (floor heating /cooling )
a. Cooling conditions
Indoor Water Temp 23° C/18° C;
Outdoor Air Temp 35° C DB/24° C WB
Capacities and power inputs are based on the following conditions (FCU or radiator)
a. Cooling conditions
Indoor Water Temp 12° C/7° C;
Outdoor Air Temp 35° C DB/24° C WB

2.3 Flowchart of Model Selection

2.4 Design Principle

 Cooling: capacity of the unit ≥ cooling load of the air conditioning
 Heating: capacity of the unit ≥ max{ heating load, floor heating load, water heating load}
 Water Tank: it should be selected based on the sanitary outfit or quantity of users. Each unit
can accommodate only one water tank.

3 Selection of the Underfloor Coils

3.1 Calculation of Unit Load for Floor Heating

Empirical Values of Floor Heating Load Per Square Meter
Dining Room
Mater Room
Guest Room
Study Room
Dining Room
Mater Room
Unit Control
b. Heating conditions
Indoor Water Temp 30° C/35° C;
Outdoor Air Temp 7° C DB/6° C WB
b. Heating conditions
Indoor Water Temp 40° C/45° C;
Outdoor Air Temp 7° C DB/6° C WB
2
House W/m
2
Villa W/m
100~120
100~110
110~130
90~110
110~140
100~120