Water Connections - State Water Heaters 110C Installation Manual And Owner's Manual

1. Turn off all electric power to the water heater if service is to be performed.
2. Turn the manual gas valve located on the outside of the unit clockwise to the off position.
WARNING
The water heater cannot perform properly without sufficient inlet gas pressure. Below are instructions
on how to check the inlet gas pressure. THIS IS ONLY TO BE DONE BY A LICENSED PROFESSIONAL.
Shut off the manual gas valve on the gas supply line.
1.
Remove the screw for the pressure port located on the gas inlet of the water
2.
heater shown in the diagram on the right.
Connect the manometer to the pressure port.
3.
Re-open the manual gas valve. Verify that there are not any gas leaks.
4.
With all gas burning equipment off, take a reading of the static gas pressure.
5.
Measure gas supply pressure at maximum heater operation: Open up water
6.
faucets to create maximum flow. Take a reading of the supply dynamic gas
pressure with all gas burning equipment running at maximum rate.
The static and dynamic pressures should be within the ranges specified on
7.
the heater's rating plate and the table on page 18.
The difference of static to dynamic pressure should not exceed 1.5" W.C.
8.
Pressure drops that exceed 1.5" W.C. can indicate restricted gas flow, under-
sized gas lines, and/or undersized supply regulators.
Measure gas supply pressure at minimum heater operation: Reduce water
9.
flow so the heater is running at minimal operation. Take a supply gas pres-
sure reading and verify that it is within the specified inlet gas pressure range.
• Do not use this water heater if any part has been submersed under water. Immediately
call a licensed professional to inspect the water heater to replace any damaged parts.
• Do not reverse the hot outlet and cold inlet connections to the water heater. This will
not properly activate the water heater.
CAUTION
All pipes, pipe fittings, valves and other components, including soldering materials, must be suitable for
potable water systems.
1. A manual shutoff valve must be installed on the cold water inlet to the water heater between the
main water supply line and the water heater.
2. In addition, a manual shutoff valve is also recommended on the hot water outlet of the unit.
Isolation valves are available.
3. If the water heater is installed within, or subjected to, a
closed loop water system, a thermal expansion tank or
a code approved device to handle thermal expansion
must be installed.
4. Before installing the water heater, flush the
water line to remove all debris, and after
installation is complete, purge the air from
the line. Failure to do so may cause damage
to the water heater.
5. There is a wire mesh filter within the cold
inlet to trap debris from entering your heater.
This will need to be cleaned periodically to
maintain optimum flow. (Refer to p. 38.)
-Measuring inlet gas pressure-

WATER CONNECTIONS

As Close as
Possible
Pressure relief
20
Page
Installation Manual
Hot
valve
outlet
Installation
Pressure
port
Gas
Cold
inlet
inlet