LP-605 Rev. 000 Rel. 009 Date 8.16.18
17
Part 4 - Water Piping
Failure to follow the instructions in this section WILL VOID the
warranty and may result in property damage, severe personal injury,
or death.
DO NOT pipe this water heater with black iron, galvanized steel,
steel, or lead pipe. Doing so will result in premature product failure
and property damage, and WILL VOID the warranty.
Do not apply a torch within 12” of the water heater. If sweat
connections are used, sweat tubing to the adapter before tting
adapter to the water connections on the heater. Damages due to
improper installation practices ARE NOT covered by warranty.
Dielectric unions or galvanized steel ttings must not be used in a
system with this water heater. Doing so WILL VOID the warranty. Use
only copper, brass, or stainless steel ttings. Teon thread sealant
must be used on all connections.
A. General Plumbing Guidelines
Use two wrenches when tightening water piping at heater. Use one
wrench to prevent the heater return or supply line from turning.
Failure to prevent piping connections from turning could cause
damage to heater components.
The heater control module uses a temperature sensor to provide high
limit protection. Some codes / jurisdictions may require additional
external controls.
The domestic water connections must be installed in accordance
with all local and national plumbing codes, or any applicable
standard which prevails. The inlet (cold) and outlet (hot) ports are
3/4” on all models.
• Pipe material must be suitable to meet local codes and
industry standards.
• It is recommended to use brass, stainless steel, or copper
unions / nipples in the water heater system.
• When installing more than one water heater to supply higher
volumes of hot water in residential applications, the number
of water heaters required and the header pipe sizing needs
to be properly sized to meet the total hot water demand.
• The pipe must be cleaned and without blemish before any
connections are made.
• Isolation (shuto valves) should be used to ease future
servicing.
• All water piping should be insulated.
It is recommended to install a sweat shut-o valve and a union
in the cold inlet piping and hot outlet to ease future servicing. If
there is a backow preventer or any type of a no return valve in
the system, install an additional tee here, suitable for a potable hot
water expansion tank.
In the hot outlet, install a suitable adapter to match the tubing of
the plumbing system. A recirculation line may be installed here
to provide additional energy savings and prevent the thermal
siphoning of domestic hot water.
20 Gallon Models 40 Gallon Models
Figure 9 - Installing the Water Heater Exhaust Pipe Clamp, Condensate Trap, and Setting the Water Heater on the Stand
3. Installing the Exhaust Pipe Clamp and Condensate Trap
The factory supplied water heater stand and condensate trap must be installed with the water heater. Failure to properly install condensate
trap will allow dangerous gas to contaminate the structure and result in property damage, serious personal injury, or death. DO NOT
operate the water heater for any amount of time for any reason until the condensate trap is installed.
1. Insert the Condensate Trap into the Exhaust Adaptor. Install the Condensate Trap Clamp to hold it in place.
2. Place the exhaust pipe inside the Exhaust Adaptor. While holding the exhaust pipe in place, attach the pipe clamp to the pipe support
with a screw driver and two (2) M5 screws.
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