Raypak 5042004 operating instructions Appendix, Filter Replacement, Inside Air Contamination

Filter Replacement	ciency systems. The heater can be supplied with
	stainless steel, which is commonly used in high effi-
1. Remove the filter box cover by loosening and	corrosion-resistant, non-metallic intake air vent materi-
	al.	You may, however, choose to use outside
removing the two wing nuts holding it in place.	combustion air for one or more of these reasons:
	1.	Installation is in an area containing contaminants
		listed below which will induce acidic condensation.
	2.	You want to reduce infiltration into your building
		through openings around windows and doors.
	3.	You are using AL29-4C stainless steel vent pipe,
		which is more corrosion-resistant than standard
		metallic vent pipe. In extremely contaminated ar-
		eas, this may also experience deterioration.
	Products causing contaminated combustion air:
Fig. 50: Remove the Air Filter Box Cover	•	spray cans containing chloro/fluorocarbons
	•	permanent wave solutions
2. Remove the filter by lifting it straight up and out of	•	chlorinated waxes/cleaners
	•	chlorine-based swimming pool chemicals
the slot in the filter box.	•	calcium chloride used for thawing
	•	sodium chloride used for water softening
	•	refrigerant leaks
	•	paint or varnish removers
	•	hydrochloric acid/muriatic acid
	•	cements and glues
	•	antistatic fabric softeners used in clothes dryers
	•	chloride-type bleaches, detergents, and cleaning
	•	solvents found in household laundry rooms
		adhesives used to fasten building products
	•	similar products
	Areas where contaminated combustion air commonly
	exists:
Fig. 51: Remove the Air Filter	•	dry cleaning/laundry areas
3. Reverse steps 1 and 2 to install the new filter. Use	•	metal fabrication plants
	•	beauty shops
Raypak replacement filters, kit number 012552F	•	refrigeration repair shops
(12”X12”) for models 504-1104 and kit number	•	photo processing plants
012553F (16”X16”) for models 1504-2004.	•	auto body shops
	•	plastic manufacturing plants
APPENDIX	•	furniture refinishing areas and establishments
	•	remodeling areas
	•	new building construction
Inside Air Contamination	•	open pit skimmers
All heaters experience some condensation during	Check for areas and products listed above before in-
	stalling heater. If found:
start-up. The condensate from flue gas is acidic.	•	remove products permanently, OR
Combustion air can be contaminated by certain vapors
in the air which raise the acidity of the condensate.	•	install TruSeal direct vent.
Higher acidity levels attack many materials including

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