Gree Versati II+ User Manual
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GREE ELECTRIC APPLIANCES, INC.OF ZHUHAI
Air-to-water Heat Pump Monobloc Versati
Design and Selection
CONTENTS
1 Installation Example ������������������������������������������������������������������������������� 1
2 Model Selection �������������������������������������������������������������������������������������� 3
2.1 Speculations of Power Supply ................................................................................... 3
2.2 Operation Conditions ................................................................................................. 3
2.3 Flowchart of Model Selection ..................................................................................... 3
2.4 Design Principle ......................................................................................................... 3
3 Selection of the Underoor Coils ���������������������������������������������������������� 4
3.1 Calculation of Unit Load for Floor Heating ................................................................. 4
3.2 Selection of Tube Spacing of the Underoor Coils ..................................................... 4
4 Quantity and Location of the Water Traps and Collectors ������������������ 5
4.1 Design Requirements on Loop Quantity for Circulation Water ...................................5
4.2 Requirements on Installation of the Water Trap (Collector) .......................................6
5 Section of FCU ���������������������������������������������������������������������������������������� 7
5.1 FCU Type Selection ................................................................................................... 7
5.2 Matching of Capacity .................................................................................................. 7
6 Selection of the Water Tank ������������������������������������������������������������������� 8
6.1 Specications of the Water Tank ................................................................................ 8
6.2 Volume Selection of the Water Tank .......................................................................... 8
7 Examples for Model Selection ��������������������������������������������������������������� 8
7.1 General Introduction to the Example Project ............................................................ 8
7.2 Heat Load Calculation ................................................................................................ 9
7.3 Model Selection ........................................................................................................ 10
1
Design & Selection
1 Installation Example
CASE 1: Connecting Heat Emitters for Heating and Cooling(Under floor loop,Fan Coil Unit,and
Radiator)
Notes
①
The two-way valve is very important to prevent dew condensation on the oor and Radiator while cooling
mode;
②
Type of thermostat and specication should be complied with installation of this manual;
③
The Bypass valve must be installed to secure enough water ow rate, and should be installed at the
collector.
CASE 2: Connecting Sanitary Water Tank
Notes
①
In this case, three-way valve should be installed and should be complied with installation of this manual;
②
Sanitary water tank should be equipped with internal electric heater to secure enough heat energy in the
very cold days;
2
Design & Selection
CASE 3 : Connecting Solar thermal system
Two-way valve is very important to prevent dew condensation on the oor and Radiator while cooling mode.
CASE 4 : Connecting Swimming pool system
B
M
T
3-way valve 1
3-way valve 2
City water
Radiator
FCU 1F CU 2
Under Floor Coil
Booster heater
Sanitary water tank
Hot water
Notes:
①
Two-way valve is very important to prevent dew condensation on the oor and Radiator while cooling
mode.
②
3-Way valve 1 is controlled by user,while the pool pump is actived, 3-Way valve 1 switches to
③
pool loop;while the pool pump is shuted down,3-Way valve 1 switches to under oor/FCU loop.
④
3-Way valve 2 is automatic controlled by monobloc unit,while running water heating mode,3-Way valve
2 switches to water tank loop;while running cooling/heating mode,3-Way valve 2 switches to under oor/FCU
loop.
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