APPENDIX D – SYSTEM PIPING
USE PROPER DESIGN AND INSTALLATION PRACTICES and observe all local codes when
installing system piping. Property damage and injury may result from an improperly piped or
designed heating system.
i
Boiler damage caused by flawed system design or operation is excluded from our warranty.
Training and experience is required to design and install a piping system that will protect the boiler and
provide many years of comfort to the building occupants. Be sure to protect the boiler from the following
problems:
1.
Corrosion
(1)
Comply with the boiler’s specific
water quality requirements. See the
Specifications
Section of this manual.
(2)
Pressurize the system above the highest
net positive suction head (NPSH)
required for each circulator and ensure
positive pressure at the uppermost point
in the system.
(3)
Maintain a closed boiler system using
heat exchangers to transfer heat to
open systems, such as domestic hot
water systems.
(4)
Purge the system completely of
dissolved oxygen by bleeding all
radiators and installing a properly
installed air scoop or air vent.
(5)
Repair leaking pipes, fittings, and vents
to minimize the need to add makeup
water.
(6)
Do not fill the boiler with softened water
unless makeup water is extremely hard
and it is not possible to eliminate all
system leaks. If filling the boiler with
softened water, test regularly the water
softener regularly to ensure that brine
solution is not entering the boiler’s water
supply.
2.
Lime scale
(1)
Repair leaking pipes, fittings, and vents
to minimize the need to add makeup
water.
(2)
Comply with the boiler’s specific
water quality requirements. See the
Specifications
Section of this manual.
(3)
Comply with the boiler’s specific
requirements for minimum water flow
through the boiler, installing a system
bypass or primary-secondary loop if
necessary to maintain flow through the
boiler when serving small zones.
3.
Overpressure
(1)
Install a properly sized expansion tank.
(2)
Do not exceed the boiler’s specific
requirements for maximum allowable
working pressure.
(3)
Do not plug or block the relief valve.
4.
Freezing
(1)
Run all portions of the system piping
inside a heated space unless the system
is properly protected with an inhibited
antifreeze solution.
5.
Overheating
(1)
Comply with the boiler’s specific
requirement for minimum water flow
through the boiler. See the
Specifications
Section of this manual.
(2)
Install a low-water cutoff device
whenever the boiler is installed above
the level of the lowest heat emitter
or radiator. Also add a low-water
cutoff when required by local code
requirements.
6.
Thermal shock
(1)
Do not over-pump. Adhere to the design
flow requirements for each zone.
(2)
Install a boiler bypass, system bypass,
or primary-secondary loop when needed
to avoid returning large volumes of cold
water directly to a hot boiler.
Summary of Contents for ESC
Page 6: ... Figure S 1 Minimum Clearances to Combustibles SPECIFICATIONS continued ...
Page 30: ...30 Internal Wiring Figure IW 1 Wiring Diagram ...
Page 31: ...31 Internal Wiring continued Figure IW 2 Wiring Diagram ...
Page 37: ...37 APPENDIX B1 INTENTIONALLY OMITTED ...
Page 50: ...50 Figure D 0 Piping Schematic Symbols APPENDIX D System Piping continued ...
Page 62: ...62 SERVICE RECORD DATE SERVICE PERFORMED ...
