Gree GRS-Cm53/NaA-M - Page 17

Chapter Ⅱ Installation（4. Design of Water System）
15
No.
Name
Instruction of Function
Remarks
1
Cut-off valve
During the debugging and maintenance
of unit, the cut-off valve can be
manually opened and closed to control
the water.
2
Pipelines
For supplying domestic water
It is suggested to use PPR tubes and
pipes
3
Filter
For filtrating the impurities inside the
pipelines and preventing them from
entering into the unit
4
Flexible connector
For shock isolation, isolate the pipelines
from the unit, water pump and other
parts which will generate vibration
6
Temperature gauge
For detecting the water temperature
7
Pressure gauge
For detecting the water pressure
8
Wired controller
Control the unit
Connect to unit
9
Electric cabinet
Supply power for the unit, water pump,
etc.
It should take rainproof protection if it is
placed outdoors
10
Circulating water
pump
Make the water from water tank enters
into the unit for heating and then return
the water to water tank
It is provided by project, and is controlled
by the unit;
11
Water flow switch
Detect whether the water flow inside the
pipelines is enough
It is provided by project, and is
connected to the unit;
12
Water tank
temperature sensor
Detect the water temperature inside the
water tank
It is connected to the unit; the unit is
equipped with water tank temperature
sensor
13
Water auto booster
pump
When the water supply pressure of
water using side is insufficient, the
water auto booster pump can boost the
pressure.
The water pump can be automatically
controlled according to the pressure; if
the water tank is in a relatively high
position that has enough pressure to
supply the water to water tap, then it can
do the water auto booster pump, but the
back water magnet valve in the system
should be replaced with back water
pump, and the back water pump is
controlled by the unit.
14
Temperature
sensor of user side
Detect the water temperature of user
side to estimate whether there is a need
to back water.
Connect to the unit, the unit or
independent packing attachment has
temperature sensor of user side.
15
Back water magnet
valve
Control the open and close of back
water pipeline; when it needs
backwater, open the valve.
Controlled by the unit
16
Water level switch
Detect the water level inside the water
tank, estimate whether it needs to
supply water.
Controlled by the unit
17
Water tank
For storage of hot water
Water tank as hot water storage tank