Icing problem

[SUPERKENT2009]

hi! good day to everyone!

We had encountered on 40 tons DX here in the philippines. Total pipe length about 180 feet long (ACCU on roofdeck and AHU on 9th floor of the building).

The problem is:
1. Icing starts when the refrigerant charge riched to 44 psi,
2. What is the posible solution?
3. Piping sized = suction line 2 5/8
= liquid line 1 3/8



4OTons DX

[TXiceman]

What is the refrigerant and what are the sucion and discharger pressures on the compressor. What is the refrigerant pressure at the evaporator outlet?

Ken

[abet_meneses]

superkent2009,

1.What are the condition of the evap unit?ice build up?
2.What is the evap outlet pressure?
we need that info so we can help.

regards,