Anti-Frozen Notice - Gree HLR45SNa-M Installation And Operation Manual

Household (Townhouse) Central Air Conditioning Unit
Illustration
1.Air conditioning host
2.Fan coil
3.Rubber soft joint
4.Thermometer
5.Pressure meter
6.Cut-off valve
7.By-pass valve
8.Y-shape filter
1

8.4 Anti-frozen Notice

1) To heat pump unit, when it is used at where temperature in winter would below 0
preservation with insulation material, and add antifreeze according actual situation.
2) On control system there is auto antifreeze operation set for assisting system. Its principle is: When unit
is at standby state (don't cut off power), and ambient temperature and system water temperature is at about 0
degree, control system will start water pump and compressor till water temperature reaches safety point.
Thickness of glycol liquid—freezing point list:
Thickness % Freezing point ℃
4.6
8.4
12.2
16
In the list: Thickness of glycol is mass thickness.
9.Check valve
10.Flowmeter
11.Drainage valve
12.Electric 2-way valve
13.Electric 3-way valv e
14.Ball valve
15.Auto exhaust valve
16.Base
5
3 4
6
7
9
10
Connected with
11
tap water
Standard Installation Sketch for this Household (Townhouse) Unit
Thickness %
-2 19.8
-4 23.6
-5 27.4
-7 31.2
15
12
2
8
Freezing point ℃
-10
-13
-15
-17
15
13
, do conduct heat
℃
Thickness % Freezing point ℃
35 -21
38.8 -26
42.6 -29
46.4 -33
14
16