Girard Products GSWH-2 Technical Manual page 2

• Use with Universal LPG only.
• Shut off all gas appliances and pilot lights when refueling.
• Turn gas OFF at the LP tank when vehicle is in motion. This disables all gas appliances and
pilot lights. Gas appliances must never be operated while vehicle is in motion.
• LP tanks must be filled by a qualified gas supplier only.
• Should overheating occur, turn gas OFF at the LP tank and turn the operating switch to the
OFF position.
In a conventional installation the Girard Tankless Water Heater is dependent on and connected t o :
1. Input Water flow: The RV's cold water system deriving its water input from a pressurized (45 PSI or greater) source such as a shore
connection or an RV water pump connected to the RV's fresh water storage tank.

A steady water flow (no pulsating) w i l l ensure a consistent temperature and performance.

Water Pressure regulators are commonly recommended but they often decrease water flow to unacceptable levels.

Water filters are highly recommended to keep sediment out of the plumbing system but the need to be maintained or they can restrict water f low.

Winterization by-pass kits are not recommended in a tankless water heater systems. The can cause a number of plumbing issues that will affect
the operation of the water heater.

City water connections at RV parks can have low or varying water pressure. If this condition occurs and cannot be resolved, then we recommend
filling the fresh water tank and using the onboard water pump.
2. Output Water flow: The RV's hot water system (i.e. faucets and shower).

Purge all air from the plumbing system using both the water pump and city water source. Air in the plumbing can cause intermittent heating
operation errors.

Pressure is important but actually water flow is critical to the operation of a tankless water heater. The longer the water stays in the water heater
the hotter it will become. The water flow is dependent on the plumbing and fixtures of the RV. The length of plumbing, the amount of elbows
and the restrictions in the faucets and show heads. Experience has shown us that the average RV water flow is between 1 and 1.4 Gallons per
Minute. This water flow will give you the optimal operation of the water heater.

The water heater is equipped with a water control valve to help maintain this optimal water flow especially in winter
conditions where input water temperatures below 45 degrees the. The water heater is shipped with the water control in
the maximum flow setting.
TANKLESS WATER HEATER - Model GSWH-2
CONSUMER SAFETY WARNING!
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