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The Temperature And Pressure Relief Valve:
•
Must be connected to an adequate discharge line.
•
Must not be rated higher than the working pressure
shown on the data plate of the water heater.
The Discharge Line:
•
Must not be smaller than the pipe size of the relief valve
or have any reducing coupling installed in the discharge
line.
•
Must not be capped, blocked, plugged or contain any
valve between the relief valve and the end of the dis-
charge line.
•
Must terminate a maximum of 300mm (12 in.) max
(Canada) or 150mm (6 in.) max (U.S.A.) above a floor
drain or external to the building.
•
Must be capable of withstanding 121°C (250°F) without
distortion.
•
Must be installed to allow complete drainage of both the
valve and discharge line.
•
Must not discharge so as to come in contact with any
electrical part or wiring.
Installations Check
Check Here
1. Have the safety precautions described in the
manual been implemented?
2. Does the gas piping conform to the recom-
mendations of your Gas Utility Company?
3. Has the gas piping been tested?
4. Is the supply pressure correct?
5. Is the water heater connected to the correct
gas supply as shown on the rating plate
(Natural Gas/Propane)?
6. Is the clearance between the water heater and
combustible construction as per specifica-
tions?
7. Is the water piping correctly connected? Are
you certain that there are no leaks?
8. Is the water heater filled with water?
9. Is the cold water supply valve open?
10. Is the vent pipe installed properly and are the
vertical and horizontal runs properly support-
ed?
11. Is the vent hood air intake opening unobstruct-
ed?
12. Is the T&P valve installed? Are the drain pipe
and T&P valve unobstructed?
13. Is a drain pan installed with a proper overflow
pipe, directed to a drain?
14. Have you taken steps to prevent water damage
in case of leaks?
15. Does the area around the water heater have
adequate ventilation?
16. Air moving device does not create negative
pressure?
17. Flammable vapors are not placed in the prox-
imity of the water heater?
18. Manifold gasket properly sealed?
19. Viewport not damaged or cracked?
20. Flame-arrester free of debris and undamaged?
21. Two piece grommet properly installed?
22. No leaks at pilot and manifold connection?
23. Manifold door screws securely tightened?
24. Extra care for proper ventilation for attic or
unconditioned space installation (max. air tem-
perature 42°C (108°F))?
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