Westinghouse WGRGH20**75F Series Installation, Start-Up, Maintenance, Parts, Warranty page 47

Install Exhaust Vent and Intake Piping
Have all vent terminations been installed at least one foot above exterior grade and one foot above normal snow
accumulation level?
Is vent piping properly supported?
Has vent piping been checked for leaks?
Has the exhaust vent line been pitched back to the water heater at a rate of 1/4" per foot?
Have the exhaust vent and intake pipes been properly installed to the water heater?
Install Condensate Piping / Tubing and Components
Have all condensate components included with the water heater been installed?
Is the condensate line piped with the approved materials listed in this manual?
Has the condensate line been routed to a laundry tub or other drain?
Install Gas Piping
Is the gas supply line a minimum of 1/2" in diameter?
Is the gas supply line length and diameter adequate to deliver the required BTUs?
Has gas supply line pressure been measured?
Does the gas type match the type indicated on the water heater rating plate?
Has a union and shut-off valve been installed?
Temperature and Pressure Relief Valve
Is the Temperature and Pressure Relief Valve properly installed and discharge line run to open drain?
Is the discharge line at least 3/4" in diameter and protected from freezing?
Wiring
Has the power and control been wired per water heater wiring diagram, this manual?
Have all DIP switches been set on the main water heater board?
Is the electrical connection polarity within water heater requirements?
Does the power supply voltage agree with the water heater rating plate? 120V AC?
Start-Up, Adjust, and Test
Has the water heater been started?
If necessary, has the water heater gas valve been adjusted?
Has the installation been customized per installation location requirements?
Have all customized system parameters been tested?
Has proper water heater operation been confirmed?
Burner Flame
Has the burner flame been checked?
Have combustion values been verified with a calibrated combustion analyzer?
If the flame does not appear normal, it may need to be cleaned by a qualified service technician. See Figure 45 for
flame sight glass window location.
Recirculation System
If a recirculation system is installed, check to see that the total runtime per day does not exceed six (6) hours.
NOTE: Warranty will be voided if runtimes for recirculation are above six (6) hours.
Final Installation Approvals
Table 31 - Installation Checklist
Signed by Technician
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Date
whl-605 Rev. 002 Rel. 000 Date 1.23.19
47
No
No
No
No
No
No
No
No