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GORDON HUMMEL · 07-17-2010, 07:21 PM

I have the installation manual for the Duo-Therm system model 56948.302.
It states R-22; "System Refrigerant charge with line set lenght" as follows
8 ft 22.5 oz.
16 ft 24.0 oz.
24 ft 25.5 oz.

Nothing is stated about the oil, but as I recall, refreigerant oil is specific to the type of refrigerant & should not be mixed!

07-17-2010, 07:21 PM	#5
GORDON HUMMEL Senior Member Join Date: Mar 2008 Location: Forest Ranch, Ca for the summer Posts: 299	I have the installation manual for the Duo-Therm system model 56948.302. It states R-22; "System Refrigerant charge with line set lenght" as follows 8 ft 22.5 oz. 16 ft 24.0 oz. 24 ft 25.5 oz. Nothing is stated about the oil, but as I recall, refreigerant oil is specific to the type of refrigerant & should not be mixed! __________________ Gordon Hummel 1991 41.5' #266 8v92 2009 Pontiac Vibe GT Toad Fulltime on the road