TriangleTube Prestige Excellence Part 1 - Manual (Page 21)

Boiler Piping
SECTION IV - Boiler Piping
General Piping Requirements
- All plumbing must meet or exceed all local,
state and national plumbing codes.
- Support all piping using hangers. DO NOT
support piping by the unit or its components.
- Use isolation valves to isolate system com-
ponents.
- Install unions for easy removal of the
PRESTIGE Excellence from the system
piping.
• If plastic pipe is used for boiler water pip-
ing, it must have a maximum oxygen diffu-
sion rate of 0.1 mg/liter-day for boiler and
water heater protection.
Use a two wrench method when tighten-
ing piping onto the boiler connections.
Use one wrench to prevent the boiler
piping from turning / twisting. Failure
to support the boiler piping and connec-
tions in this manner could cause damage
to the boiler and its components.
Pressure Relief Valve
1. The PRESTIGE Excellence is supplied
with a 30 psi pressure relief valve and must
be piped using the PRV connection as
shown in Fig. 5 page 15.
2. To avoid potential water damage to the sur-
rounding area or potential scalding hazard
due to the operation of the relief valve, the
discharge piping:
- Must be connected to the discharge out-
let of the relief valve and directed to a
safe place of disposal.
- Length should be as short and direct as
possible. The size of the discharge line
should not be reduced, maintain the
same size as the outlet of the relief valve.
- Should be directed downward towards
the floor at all times. The piping should
terminate at least 6 inches above any
drain connection to allow clear visibili-
ty of the discharge.
- Should terminate with a plain end, not
with a threaded end. The material of
the piping should have a serviceable
temperature rating of 250ºF or greater.
- Should not be subject to conditions
where freezing could occur.
- Should not contain any shut-off valves
or obstructions. No shut-off valve
should be piped between the boiler and
relief valve.
Failure to comply with the guidelines on
installing the pressure relief valve and dis-
charge piping can result in personal injury,
death or substantial property damage.
Low Water Cutoff Device
- The PRESTIGE Excellence is equipped with
a factory installed pressure switch type Low
Water Cut Off device.
- The minimum operating system pressure
allowable with this device is 10 psig.
- Check local codes if a Low Water Cutoff
Device is required. If so, determine if this
device meets the requirements of the local
codes.
The PRESTIGE Excellence control sys-
tem also uses the sensing of the system
water temperatures entering and exiting
the heat exchanger to provide protection
against low water conditions Where
local codes and jurisdiction do not
accept a pressure device for low water
protection, the jurisdictions may accept
these PRESTIGE Excellence integral
control functions as a means of provid-
ing low water protection.
WARNING
WARNING
NOTICE
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