Overall Model Selection Steps; Usage; Air Conditioner+Heating Water+Floor Heating; Air Conditioner+Heating Water/Floor - Gree GMV-S120WL/A-S Service Manual

8.1.2 Usage

Item
It is suggested that in summer, temperature of hot water can be set around 45℃; in winter,
Using hot
water
It's better to use hot water in higher temperature of a day in winter (It can set via preset, timer,
sunflower and related functions, preset and timer functions are circularly effective).
Before using floor heating function, please start up the function for preheating. Please conduct
preheating 4~6 hours before using the floor heating function; debugging should be conducted 12
hours before using floor heating function, and should use after the walls are dried, whick is more
Using
floor
If user wants to turn on ―air conditioner heating and floor heating‖, then the total load should not be
heating
over rated heating capacity of outdoor unit, otherwise the heating effect will be weakened.
If floor heating effect is poor, please turn off the air conditioner in the same room, or turn on the air

8.2 Overall Model Selection Steps

8.2.1 Air conditioner+heating water+floor heating, air conditioner+floor
heating
1) Define using demand as： air conditioner+heating water+floor heating, air
conditioner+floor heating.
2) For defining model selection and collocation of outdoor unit, indoor unit, generator and
water tank, please refer to ―VI. Profuct model selection and collocation‖.
Model selection of air conditioner (indoor unit, outdoor unit) ——according to air
3)
conditioning load of room (according to cooling load or heating load), and then select
indoor unit and outdoor unit; procedures for model selection are the same as that of
general multi VRF unit.
4) Model selection of generator——according to floor heating load of room to select
generator; quantity of generator should be≤maximum allowable quantity of generator
for connecting outdoor unit; actual floor heating capacity of generator should satisfy
requirement of floor heating load.
5) Model selection of water tank——according to hot water using demand of user to
select model of water tank; quantity of water tank should be≤quantity of generator; if
using method is ―air conditioner+floor heating‖, then skip this step.
6) Floor heating engineering design (pipe distance, pipe diameter, route quantity of coil
pipes of each room, quantity and layout of )
8.2.2 Air conditioner+heating water
1) Define using demand of user as: air conditioner + heating water.
2) For defining model selection and collocation of outdoor unit, indoor unit, generator and
water tank, please refer to ―VI. Profuct model selection and collocation‖.
Model selection of air conditioner (indoor unit, outdoor unit) ——according to air
3)
conditioning load of room (according to cooling load or heating load), and then select
GMV5 Home DC Inverter Multi VRF Units
temperature of hot water can be set to be 50℃ or below 50℃.
energy-saving;
conditioner and floor heating in other rooms.
Contents
36