Gree Versati II+ - IPM or PFC Over-temperature Protection P8

8
Design & Selection
6 Selection of the Water Tank
6.1 Specications of the Water Tank
SXVD200LCJ/A-K
220~240V-1Ph-50Hz
A single coil with the electric heater is integrated, used for oor heating system
SXVD300LCJ/A-K
SXVD200LCJ2/A-K
220~240V-1Ph-50Hz
Dual coils with the electric heater are integrated, used for oor heating system and the solar system
SXVD300LCJ2/A-K
SXVD200LCJ/A-M
380~415V-3Ph-50Hz
A single coil with the electric heater is integrated, used for oor heating system
SXVD300LCJ/A-M
SXVD200LCJ2/A-M
380~415V-3Ph-50Hz
Dual coils with the electric heater are integrated, used for oor heating system and the solar system
6�2 Volume Selection of the Water Tank
6.2.1 Selection Based on Water Consumption Per Capita
Building Type Unit Daily Water Consumption (L) Water Temperature (°C)
House Per person, Per day 40~80 60
Villa Per person, Per day 70~110 60
6�2�2 Selection Based on Sanitary Utensils
Utensil Type
Daily Water
Consumption (L)
Water Temperature (°C)
Bathtub, Sprinkler system (with shower) 150 40
Bathtub, Sprinkler system (without shower) 125 40
Shower 70~100 37~40
Wash Basin 3 30
6� 2�3 Selection of the Water Tank
Selection of the water tank should consider the ow rate of the shower head, duration of use per person
and daily water consumption.
Volume of the Water Tank=
t(design temperatuere)-t(entering cold water temperatuere)
t(water tank temperatuere set point)-t(entering cold wa ter temperature)
•consumption
t (design temperature): generally it is 60°C ;
t (entering cold water temperature): it differs for different regions.
t ( water tank temperature set point): it is the target heating temperature of the water tank
α: correction factor
Empirical Values for Volume Correction of the Water Tank
Duration of Use
(min/Person)
Flow Rate of the Shower Head
(L/min)
10 15 20 25 30 40
4 0.48 0.71 0.94 1.18 1.42 1.89
6 0.71 1.06 1.42 1.77 2.12 2.83
8 0.95 1.42 1.89 2.36 2.83 3.77
10 1.18 1.77 2.36 2.95 3.54 4.72
15 1.76 2.65 3.54 4.42 5.31 7.08
Empirical values are worked out under conditions of 80L consumption (per day per person), 8L/min ow rate
of the shower head, and 10 minutes use duration per person.
7 Examples for Model Selection
7�1 General Introduction to the Example Project
For a two-oor house, there is a master room and a both room for each oor and both of
them require oor heating. Other rooms use the heat pump for heating in winter. The master
room covers 28m
2
and the both room covers 12m
2
.