American Water Heater DCG - Manual (Page 18)

18
INSTALLATION CHECKLIST
Water Heater Location Requirements
• Centrally located with the water piping system.
Located as close to the gas piping and vent
pipe system as possible.
• Located indoors and in a vertical position.
Protected from freezing temperatures.
• Proper clearances from combustible surfaces
maintained and not installed directly on a
carpeted floor. Sufficient room to service the
water heater.
• Provisions made to protect the area from water
damage. Properly sized drain pan installed and
piped to an adequate drain.
• Installation area free of corrosive elements and
flammable materials.
Vent Pipe System
• Draft hood and damper properly installed
• Vent connectors securely fastened with screws
and supported properly to maintain 6” (152mm)
clearance.
• Vent pipe and fittings of approved material.
• Acceptable size, length, and number of elbows
on exhaust outlet pipe.
• Installed in accordance with prevailing
provisions of local codes, or in the absence of
such, National Fuel Gas Code, NFPA 54, ANSI
Z223.1-Latest Edition. Canadian Installations
must be performed in accordance with
CAN/CSA-B149.1.
• Drafthood or vent pipe should not be obstructed
in any way.
Vent Termination
Vertical
• Vertical gas vents must terminate with a listed
cap or other roof assembly and be installed
according to their manufacturer’s instructions.
Water System Piping
• Temperature and pressure relief valve properly
installed with a discharge line run to an open
drain and protected from freezing.
• All piping properly installed and free of leaks.
• Water heater completely filled with water.
• A properly sized expansion tank must be
installed on all closed systems.
• A tempering valve should be installed per
the manufacturer’s instructions.
Gas Supply and Piping
• If using a flexible gas connector, make sure its
rating tag matches or exceeds the input of the
water heater.
• Adequate pipe size and of approved material.
• Gas supply is the same type as listed on the
water heater data plate.
• Gas line equipped with full opening shut-off
valve, union and drip leg.
• Approved pipe joint compound used.
• Chloride-free soap and water solution or other
approved means used to check all connections
and fittings for possible gas leaks.
Electrical Connections
• Unit must be “hard-wired” to a dedicated 120V
power supply
• Proper polarity.
• Water heater properly grounded.
• Installed in accordance with prevailing
provisions of local codes, or in the absence of
such, National Electrical Code, ANSI/NFPA 70
and/or the CSA C22.1, Electrical Code.
Index