Water Piping - New Yorker CG20F Installation, Operating And Service Instructions

6

Water Piping

!
WARNING
Failure to properly pipe boiler may result in
improper operation and damage to boiler or
building.
A. Design and install boiler and system piping to prevent
oxygen contamination of boiler water.
Oxygen contamination sources are system leaks
requiring addition of makeup water, fittings, and
oxygen permeable materials in distribution system.
Eliminate oxygen contamination by repairing system
leaks, repairing fittings, and using non-permeable
materials in distribution system.
B. Install circulator with flanges, gaskets and bolts
provided.
C. Install Safety Relief Valve. See Figure 6-1. Safety
Relief Valve must be installed with spindle in vertical
position.
!
WARNING
Safety relief valve discharge piping must
be piped near floor to eliminate potential
of severe burns. Do not pipe in any
area where freezing could occur. Do
not install any shut-off valves between:
1. Safety relief valve and boiler
2. Safety relief valve and discharge
Union may be installed in safety relief valve
piping.
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Installation, Operating & Service Manual
CG-F
D. Connect system supply and return piping to boiler.
Refer to Figures 6-1, 6-2, and 6-3. Also consult
Residential Hydronic Heating Installation and Design
I=B=R Guide. Maintain minimum ½ inch clearance
from hot water piping to combustible materials.
E. If boiler is used in connection with refrigeration
systems. See "Appendix: Combination Refrigeration/
Heating System".
F. Use a boiler bypass if the boiler is to be operated
in a system which has a large volume or excessive
radiation where low boiler water temperatures may
be encountered (i.e. converted gravity circulation
system, etc.). See Appendix "Low Return Water
Temperature".
G. Perform a long term pressure test of the hydronic
system, isolate boiler to avoid a pressure loss due
to the escape of air trapped in the boiler.
To perform a long term pressure test including the
boiler, ALL trapped air must first be removed from
the boiler.
A loss of pressure during such a test, with no
visible water leakage, is an indication that the boiler
contained trapped air.
Figure 6-1: Near Boiler Piping
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