LP-325 Rev. 009 Rel. 004 Date 12.2.20
14
Figure 3 - Appliance Dimensions - NOTE: All Dimensions Are Approximate
Part 4 - Piping
Failure to follow the instructions in this section WILL VOID the
warranty and may result in property damage, severe personal injury,
or death.
Dielectric unions or galvanized steel fittings must not be used in a
system with this appliance. Doing so WILL VOID the warranty. Use
only copper, brass, or stainless steel fittings. Teflon thread sealant
must be used on all connections.
Plumbing of this appliance should only be done by a qualified,
licensed plumber in accordance with all local plumbing codes. The
appliance may be connected to an indirect water heater to supply
domestic hot water. HTP offers indirect water heaters in a wide range
of gallon sizes in either stainless steel or glass lined construction.
A. General Plumbing Information
Use two wrenches when tightening water piping at appliance. Use
one wrench to prevent the appliance return or supply line from
turning. Failure to prevent piping connections from turning could
cause damage to appliance components.
The building piping system must meet or exceed the piping
requirements in this manual.
The appliance control module uses temperature sensors to
provide both high limit protection and modulating temperature
control. The control module also provides low water protection by
sensing the water level in the appliance. Some codes/jurisdictions
may require additional external controls.
The National Standard Plumbing Code, the National Plumbing Code
of Canada, and the Uniform Plumbing Code limit heat transfer fluid
pressure to less than the minimum working pressure of the potable
water system up to 30 PSI maximum. In addition, the heat transfer
fluid must be water or another non-toxic fluid having a toxicity of
Class 1, as listed in Clinical Toxicology of Commercial Products,
5th Edition. Failure to follow this warning could result in property
damage, severe personal injury, or death.
Do not apply a torch within 12” of the appliance. If sweat connections
are used, sweat tubing to the adapter before fitting adapter to the
water connections on the appliance. Damages due to improper
installation practices ARE NOT covered by warranty.
The water connections must be installed in accordance with all local
and national plumbing codes, or any applicable standard which
prevails.
• Pipe material must be suitable to meet local codes and industry
standards.
