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AP18733 REV. 3.2.17
25
NOTE: DAMAGE TO THE WATER HEATER CAUSED BY EXPOSURE TO CORROSIVE VAPORS IS NOT COVERED BY WARRANTY. (Refer
to the limited warranty for complete terms and conditions).
When removing an existing water heater, the following steps must be followed.
1. Seal any unused openings in the common venting system.
2. Visually inspect the venting system for proper size and horizontal pitch to determine
if there is blockage, leakage, corrosion or other deficiencies that could cause an unsafe
condition.
3. If practical, close all building doors, windows and all doors between the common
venting system and other spaces in the building. Turn on clothes dryers and any
appliances not connected to the common venting system. Turn on any exhaust fans,
such as range hoods and bathroom exhausts, at maximum speed. Do not operate a
summer exhaust fan. Close all fireplace dampers.
4. Place in operation the appliance being inspected. Follow the lighting instructions.
Adjust the thermostat so the appliance will operate continuously.
5. Test for spillage at the draft hood relief opening after 5 minutes of main burner
operation. Use the flame of a match or candle or smoke from a cigarette.
6. After it has been determined that each appliance remaining connected to common
venting system properly vents when tested as outlined, return doors, windows, exhaust
fans, fireplace dampers and any other gas burning appliance to their previous condition
of use.
7. Any improper operation of the common venting system should be corrected so the installation conforms to the National Fuel Gas Code, ANSI
Z223.1. When resizing any portion of the common venting system, the common venting system should be resized to approach the minimum size
as determined using the appropriate tables in Appendix G in the National Fuel Gas Code, ANSI Z 223.1.
PRODUCTS TO AVOID AREAS LIKELY TO HAVE CONTAMINANTS
Spray cans containing uorocarbons Dry cleaning/laundry areas and establishments
Permanent wave solutions Swimming pools
Chlorinated waxes/cleaners Metal fabrication plants
Chlorine-based swimming pool chemicals Beauty shops
Calcium chloride used for thawing Refrigeration repair shops
Sodium chloride used for water softening Photo processing plants
Refrigerant leaks Auto body shops
Paint or varnish removers Plastic manufacturing plants
Hydrochloric or Muriatic acid Furniture renishing areas and establishments
Cements and glues New building construction
Antistatic fabric softeners used in clothes dryers Remodeling areas
Chlorine-type bleaches, laundry detergents, and cleaning solvents Garages and workshops
Adhesives used to fasten building products
Table 9
▪ H. REMOVING A WATER HEATER FROM A COMMON VENT SYSTEM
DANGER
DANGER
Do not install the water heater into a common vent with any other appliance. This will cause ue gas spillage or appliance malfunction, resulting in
possible substantial property damage, severe personal injury, or death.
Failure to follow all instructions can result in ue gas spillage and carbon monoxide emissions, causing severe personal injury or death.
WARNING
UNPACKING WATER HEATER – Any claims for damage or shortage in shipment must be led immediately against the transportation company
by the consignee.
▪ I. UNPACKING THE WATER HEATER
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