LP-428 Rev. 6.6.16
13
Figure 4 - Boiler 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 ttings must not be used
in a system with this boiler. Doing so WILL VOID the warranty.
Use only copper, brass, or stainless steel ttings. Teon thread
sealant must be used on all connections.
DO NOT pipe this boiler 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.
A. General Plumbing Information
Use two wrenches when tightening water piping at boiler. Use
one wrench to prevent the boiler return or supply line from
turning. Failure to prevent piping connections from turning
could cause damage to boiler components.
The building piping system must meet or exceed the the piping
requirements in this manual.
Plumbing of this product should only be done by a qualied,
licensed plumber in accordance with all local plumbing codes.
The boiler may be connected to an indirect water heater to
supply domestic hot water. HTP oers indirect water heaters
in stainless steel or glass-lined construction.
The 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 heat exchanger. Some codes/jurisdictions
may require additional external controls..
NOTE: The addition of a high temperature limiting device is
important if the boiler is to be connected to a domestic hot
water system.
All piping methods shown in this manual use primary / secondary
connection to the boiler loop. This is to avoid the possibility of
inadequate ow through the boiler. For other piping methods,
consult your local HTP representative, or refer to Boiler Piping
Details in this manual.
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