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12. Adjust the temperature set point per “Temperature Control” Section of this manual.
13. This appliance is equipped with an ignition device that automatically lights the burner. Do
not try to light the burner by hand.
14. Open a hot water tap to a ow above the minimum ow point (0.66 gpm/ 2.5 l/min).
15. The burner control system will re the igniter, the burner will light, and hot water will be
produced.
16. If the heater will not operate, follow the shut down instructions. Wait 5 minutes and
attempt to repeat this start up procedure.
17. If system does not operate, begin troubleshooting per “Trouble Shooting” section of this
manual. Contact Marey.
RELIEF VALVE INSTALL
For safe operation of the water heater, be sure that:
• The pressure rating of the relief valve must not exceed 116 psi, the maximum working
pressure of the water heater as marked on the rating plate.
• The BTUH rating of the relief valve must equal or exceed the BTUH input of the water heater
as marked on its rating plate.
• No valve of any type should be installed between the relief valve and the water heater.
• The discharge line must be NO SMALLER than the outlet of the valve and must pitch down-
ward to allow complete drainage (by gravity) of the relief valve and discharge line.
• The end of the discharge line should not be threaded or concealed. No valve of any type,
restriction or reducer coupling should be installed in discharge line
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