76 Appendixes
Connecting a Pressure Relief Valve
Yes
No
Have you installed an approved pressure relief valve on the water heater?
Does the rating of the pressure relief valve match or exceed the maximum BTU rating of the
water heater?
Is the pressure relief valve at least
3
/
4
in in diameter?
Have you installed the pressure relief valve on the hot water outlet pipe near the water
heater?
Have you installed a discharge drain tube from the pressure relief valve to within 6–12 in
(150–300 mm) of the floor?
Venting the Water Heater
Yes
No
Have you ensured that there are proper clearances around the vent and air intakes?
Have you ensured that only the approved vent materials listed in this manual are used as
venting for the water heater?
Have you ensured that 1.3” of vent was inserted into the water heater vent collar then affixed
with the included screws?
Is the vent sloped upward toward the vent termination at a rate of
1
/
4
in per foot (2 % grade)?
Are all vent runs properly supported?
Have you properly supported the vent termination?
Have you properly sealed all air intake and exhaust joints, from the flue collar to the to the
vent termination?
Have you installed an end cap on the vent pipe?
Have you checked the venting for leaks?
Is the vent termination at least 12 in (300 mm) above the exterior grade?
Have you ensured that sufficient make-up air is available?
Is the total vent length within the maximum vent length restriction?
Connecting the Power Supply
Yes
No
Is the supplied voltage 110-120 V AC?
Is the water heater plugged into a properly grounded outlet?
If you have made a direct power supply connection, have you installed a power switch to
facilitate end-user maintenance?
Have you checked the polarity of the electrical connection?
Is the system properly set up for cascade operation (Main and Sub water heaters), if
applicable?
Setting the DIP Switches
Yes
No
Have you verified the positions of all DIP switches on the circuit board?
Have you verified the positions of all DIP switches on the front panel?
Operating the Water Heater
Yes
No
Have you shown the owner how to clean the inlet water filter?
Have you given the Installation Manual and User’s Information Manual to the owner for future
reference?
Have you shown the owner how to shut off the gas in case of an emergency?
