Mitsubishi Electric PAC-IF013B-E Manuel D'installation page 22

7. Requirement on local design
(3) Withstanding pressure
Design pressure of outdoor unit is 4.15 MPa. Following must be satisfied for burst pressure of connecting application.
Burst pressure : More than 12.45 MPa (3 times more than design pressure)
(4) Contamination maintenance
1. Wash the inside of heat exchanger to keep it clean. Be sure to rinse not to leave flux. Do not use chlorine detergent when washing.
2. Be sure that the amount of contamination per unit cubic content of heat transfer pipe is less than the following amount.
Example) In case of ø9.52mm
Residual water : 0.6 mg/m, Residual oil : 0.5 mg/m, Solid foreign object : 1.8 mg/m
7.3. Additional refrigerant charging amount
Regarding additional refrigerant charging amount of PUZ-ZM100, 125, 140 models, follow the table below.
For other models, see the installation manual of each outdoor unit.
Permitted pipe
Model
length
ZM100 - 140 - 85m
7.4. Thermistor position
< Target temp. thermistor (Locally supplied) >
Put thermistor where average supply or return air temperature for heat exchanger can be detected.
Put thermistor where it does NOT pick up the temperature of heat exchanger.
< Liquid refrigerant pipe thermistor (TH2) >
Put thermistor where liquid refrigerant pipe temperature can be detected.
Protect the thermistor with heat insulating materials not to be affected by the ambient temperature, etc.
In case that the refrigerant is distributed by distributor, put thermistor before the distributor.
< 2-Phase temp. thermistor (TH5) >
Put thermistor where 2-Phase temperature can be detected on the indoor HEX pipe.
It should be located in the middle of inlet and outlet ports.
If there are some paths, locate it on the top of them.
Protect the thermistor with heat insulating materials not to be affected
by the ambient temperature, etc.
< Target temp. thermistor (TH1) >
Put thermistor where average supply or return air temperature for heat exchanger can be detected.
Put thermistor where it does NOT pick up the temperature of heat exchanger.
< HEX inlet temp. thermistor (TH11) >
Put thermistor where average air temperature of heat exchanger inlet can be detected.
Put thermistor where it does NOT pick up the temperature of heat exchanger.
7.5. Restriction on input signals to the interface unit
Follow the "Note" in section 3.1 and 3.2.
7.6. Indoor operation range
Follow the operation range shown in section 3.3.
7.7. Method to disable the compressor operation when using R32 refrigerant
If you need to disable the compressor operation as a measure to satisfy the fire safety (e.g. in the case of refrigerant leakage), take the following method.
▪Input STEP 0 when the manual step mode is selected.
▪Turn ON IN1 (Forced Comp. OFF) after changing the operation mode to cooling, when the auto step mode is selected.
22
Additional refrigerant charging amount
Permitted vertical
difference
31 - 40m 41 - 50m
- 30m 0.5kg 1.0kg
51 - 60m 61 - 70m 71 - 85m
1.5kg 2.0kg 2.8kg
Distributor
TH2
TH5
Maximum
amount of
refrigerant
6.8kg