View Full Version : Gumham-Bush Split unit Air Conditioners
Mastercool
10-10-2010, 08:00 PM
Hi All, I have been asked to install two Dunham-Bush Split unit Air cons, Moder number HP482C outdoor unit and CS1202M indoor. The pipe sizes are 3/4" Suction & 1/2" liquid line. The pipe runs will be about 50 mts in length. Firstly is that length workable and if so how much extra oil and R22 gas must I add to this installation, per unit?
Mahy thanks Errol Leat
frank
10-10-2010, 08:42 PM
Not familiar with Dunham Bush splits, only their fan coils and chillers.
Most splits need an extra 20g-50g/m additional charge over and above the factory charge, but I would proceed with caution without the exact manufacturers recommendations.
Can you still legally install R22 units in SA?
Mastercool
11-10-2010, 11:15 AM
Hello Frank
Many thanks for you reply and sorry about the bad spelling. Yest R22 is no problem here in Zimbabwe / Zambia & South Africa.
By the way what gasses are there available to replace R22?
Cheers Errol
frank
11-10-2010, 11:30 AM
There are a number available.
Do a Google search for R22 replacements
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