LP-454 Rev. 004 Rel. 002 Date 12.1.17
30
Figure 23 - Control Board Wiring
Part 8 - Gas Connections
Failure to follow all precautions could result in re, explosion, severe
injury, or death.
Ensure the gas on which the water heater will operate is the same
type specied on the rating plate. Failure to do so could result in
water heater malfunction, property damage, personal injury, or
death.
The gas supply shall have a minimum of no less than 3.5” water column,
a maximum inlet pressure of no greater than 14” water column (350
mm), and ½ pound pressure (3.5 kPa). The entire piping system, gas
meter, and regulator must be sized properly to prevent excessive
pressure drop (greater than 0.5” WC) as stated in the National Fuel Gas
Code. This information is listed on the rating plate.
It is very important that the water heater is connected to the gas type
noted on the rating plate: “LP” for liqueed petroleum, propane gas, or
“Nat” for natural or city gas. All gas connections must be approved by
the local gas supplier or utility, in addition to the governing authority,
prior to turning the gas supply on.
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