Additional Refrigerant Charge - Mitsubishi Electric CITY MULTI PUHY-HP-TNU-A Série Manuel D'installation

9-9. Additional refrigerant charge

Charge refrigerant in a liquid state.
- Charging refrigerant in the gaseous state will change the composition of the refrigerant and lead
to a performance drop.
Do not use a charging cylinder when charging refrigerant.
- The use of a charging cylinder may change the composition of the refrigerant and lead to a
performance drop.
The table below summarizes the factory-charged amount of refrigerant, the maximum amount of refrigerant to be
added on site, and the maximum total amount of refrigerant in the system.
Unit model
HP72T/YNU-A
HP96T/YNU-A
HP120T/YNU-A
HP144T/YSNU-A
HP192T/YSNU-A
HP240T/YSNU-A
Both refrigerant overcharge and undercharge will cause problems. Charge the system with the proper amount of
refrigerant.
Record the added refrigerant amount on the label attached to the control box panel for future servicing.
Factory-charged amount
9.8 (346)
10.8 (381)
10.8 (381)
19.6 (692)
21.6 (702)
21.6 (702)
Maximum amount to be added on site
19.9 (702)
22.5 (794)
23.9 (844)
31.3 (1105)
31.1 (1098)
32.0 (1129)
Maximum total amount in the system
29.7 (1048)
33.3 (1175)
34.7 (1225)
50.9 (1796)
52.7 (1859)
53.6 (1891)
[kg (oz)]