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We have an armstrong funace/ac package unit model 64hwc303a-2b. The repair contract i have on this system (my gas and elec co.) can't find the nozzles to recharge the system with the coolant, and don't have a manual on this unit. Is there a way of getting a copy of the service manual for this unit and does anyone know where they are, and tell me now. I've had the repair people out 4 times to no avail.

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If there are no service ports on this unit, have them put the in! Alot of package units come from the factory charged and the system sealed. They should have access to quick-taps. Follow this link and look at catalog page 231.
These will give them access to the refrigerant circuit and refill the unit. Hopefully they are not trying to take advantage of you by wanting you to buy a new unit. Package units are not to bad to work on and finding a leak should be pretty easy with either a good refrigerant leak detector or uv dye injection. Let me know what you find out.

Posted on Jun 05, 2010


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Posted on Jan 02, 2017


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