John Wood Power Direct Vent (Non-ENERGY STAR qualified models) - Manual (Page 18)

Installation Checklist
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Water Heater Location
1. Centrally located with the water piping system.
Located as close to gas piping and vent pipe
system as possible.
2. Located indoors and in a vertical position.
Protected from freezing temperatures.
3. Proper clearances from combustible surfaces
maintained and not installed directly on a car-
peted floor.
4. Provisions made to protect the area from water
damage. Drain pan installed and piped to an
adequate drain.
5. Installation area free of corrosive elements and
flammable material.
6. Sufficient room to service the water heater.
Gas Supply and Piping
1. Gas supply is the same type as listed on the
water heater data plate.
2. Gas line equipped with shut-off valve, union
and drip leg
3. Approved pipe joint compound used.
4. Adequate pipe size and of approved material.
5. Chloride-free soap and water solution or other
approved means used to check all connections
and fittings for possible gas leaks.
Vent Pipe System
1. Vent pipe and fittings of approved material.
2. Acceptable size, length and number of elbows
on air intake system.
3. Acceptable size, length and number of elbows
on exhaust vent system.
4. Installed in accordance with prevailing provi-
sions of local codes, or in the absence of such,
the latest edition of “Natural Gas and
Propane Installation Code” CAN/CSA-
B149.1 (Canada), or “National Fuel Gas
Code” ANSI Z223.1 (NFPA 54) (U.S.A.).
5. Horizontal piping slopes at an upward pitch of
3mm (1/8 in.) rise per 1.5m (5 ft). away from
the water heater.
6. Not obstructed in any way.
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Vent Termination
Horizontal
1.
Correct relationship - air intake to exhaust vent.
2. 305mm (12 in.) min. above grade/snow level.
3. Away from corners, other vents, windows etc.
Vertical
1.
Air intake and exhaust vent terminations
457mm (18 in.) min. above roof/snow level.
2. Correct relationship - air intake to exhaust vent.
3. Air intake and exhaust vent terminations on the
same side of roof and facing same direction.
Water System Piping
1. Temperature and Pressure relief valve proper-
ly installed with a discharge line run to an open
drain and protected from freezing.
2. All piping properly installed and free of leaks.
3. Heater completely filled with water.
4. Closed system pressure build-up precautions
installed.
Electrical Connections
1. Unit connected to a dedicated power supply.
2. Unit connected to a 120V electrical supply.
3. Proper polarity.
4. Water heater properly grounded.
5. Installed in accordance with prevailing provi-
sions of local codes, or in the absence of such,
the latest edition of “Canadian Electrical
Code (CAN/CSA C22.1), Part I” (Canada) or
“National Electrical Code” (NFPA 70)”
(U.S.A.).
If the answer to all of the questions above is
“Yes”, proceed with lighting the heater.