Installation
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Notes:
1. Use T valve filling port to add refrigerant;
2. Add refrigerant during cooling operation;
3. Do not directly pour liquid refrigerant;
4. Model of frozen oil: Sontex200LT white oil or 3GS oil.
reconnect the parts, and again vent air and detect leakage.
(4) After detection, use dry cloth to wipe out soapy water. Sort all connecting pipes.
6. Precautions
(1) After sorting of connecting pipes, wrap them and indoor unit connectors with thermal
insulation material to avoid water leakage due to dewing.
(2) When connecting pipe is too long, both unit performance and reliability will deteriorate.
With increased number of pipeline bends, refrigerant flow resistance will increase and
cooling/heating performance fall.
Product series/models
FRD23-B
FRD35-B
FRD50-B
FR(D)71-B
FR(D)100-B
FR(D)95
FR(D)125/S
FR95-C
FR125-C/S
FR(D)180/S FR(D)260/S
Recommended max length (m)
15
20
20
20
20
Recommended max HGT diff (m)
5
8
8
8
10
Recommended max elbows
3
5
5
5
5
When length and height exceed above values, consult us for suitable measures.
(3) If FRD23-B, FRD35-B, FRD50-B connecting pipe length exceeds 5m, add 20g/m
refrigerant.
(4) If FR(D)71-B, FR(D)100-B connecting pipe length exceeds 8m, add 30g/m refrigerant and
10g/m frozen oil.
(5) If FR(D)95, FR(D)125/S, FR95-C, FR125-C/S connecting pipe length exceeds 8m, add
30g/m refrigerant and 10g/m frozen oil.
(6) If FR(D)180/S connecting pipe length exceeds 8m, add 80g/m refrigerant.
(7) Amount of refrigerant filled inside FR260/S is for 5m connecting pipe. For extended
length of connecting pipe, add 170g/m refrigerant.
7. Electric wiring
(1) Electric wiring shall be carried out by electricians with qualification certificates. State
electric wiring code shall be followed;
(2) Electric box must be fixed on indoor unit casing; earthing must be reliable;
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