Mitsubishi Electric CITY MULTI PQRY-P200YMF-B Service Handbook page 39

(5) Check points for system structure
ex. PQRY-P200YMF-B
Check points from installation work to test run.
Classification Portion
Installation and
piping
1
2
3
4
5
6
7
8
Power source
1
wiring
2
3
4
Check item
Instruction for selecting combination of heat source
unit, and indoor unit followed? (Maximum number of
indoor units which can be connected, connecting model
name, and total capacity.)
Follow limitation of refrigerant piping length? For ex-
ample, 70m or less (total length : 220m) at the farthest.
Connecting piping size of branch piping correct?
Refrigerant piping diameter correct?
Refrigerant leak generated at connection?
Insulation work for piping properly done?
Specified amount of refrigerant replenished?
Pitch and insulation work for drain piping properly done?
Specified switch capacity and wiring diameter of main
power source used?
Proper grounding work done on heat source unit?
The phases of the L line (L1, L2, L3) correct?
L line and N line connected correct?
–36–
Trouble
Not operate.
Not cool (at cooling).
Not heat (at heating).
Not cool, not heat, error stop.
Condensation drip in piping.
Not cool, not heat, error stop.
Water leak, condensation drip in drain piping.
Error stop, not operate.
Electric shock.
Error stop, not operate.
The some electric pars should be
damaged.