Water Piping And Trim - New Yorker PVCG SERIES Installation, Operating And Service Instructions

IV. Water Piping and Trim
Failure to properly pipe boiler may result in improper operation and damage to boiler or structure.
Oxygen contamination of boiler water will cause corrosion of iron and steel boiler components, and can
lead to boiler failure. Manufacturer's Standard Warranty does not cover problems caused by oxygen
contamination of boiler water or scale (lime) build-up caused by frequent addition of water.
A.
Design and install boiler and system piping to
prevent oxygen contamination of boiler water and
frequent water additions.
1. There are many possible causes of oxygen
contamination such as:
a. Addition of excessive make-up water as a result
of system leaks.
b. Absorption through open tanks and fittings.
c. Oxygen permeable materials in the distribution
system.
2. In order to insure long product life, oxygen sources
must be eliminated. This can be accomplished by
taking the following measures:
a. Repairing system leaks to eliminate the need for
addition of make-up water.
b. Eliminating open tanks from the system.
c. Eliminating and/or repairing fittings which allow
oxygen absorption.
d. Use of non-permeable materials in the
distribution system.
e. Isolating the boiler from the system water by
installing a heat exchanger.
f. Use properly designed and operating air
elimination devices in water piping.
B.
Connect system supply and return piping to
boiler. See Figures 7 and 8. Also consult I=B=R
Installation and Piping Guides. Maintain minimum ½
inch clearance from hot water piping to combustible
materials.
C.
Install Circulator with flanges, gaskets and bolts
provided. Install system circulator on supply piping.
Connect harness to circulator and secure any excess
conduit.
D.
Install Pressure Relief Valve. See Figure 7 or 8.
Pressure Relief Valve must be installed with spindle in
vertical position. Installation of the relief valve must
comply with the ANSI/ASME Boiler and Pressure
Vessel Code, Section IV.
14
WARNING
Pressure relief valve discharge piping must be
piped such that the potential of severe burns
is eliminated. DO NOT pipe in any area where
freezing could occur. DO NOT install any shut-off
valves, plugs or caps. Consult Local Codes for
proper discharge piping arrangement.
E.
Install Drain Valve in ¾ inch NPT connection in tee
provided. See Figure 1.
F.
Space heating and domestic water heating with
New Yorker Link SL™ indirect water heater. Install
New Yorker Link SL™ indirect water heater as a
separate heating zone. Refer to New Yorker Link SL™
Installation, Operating and Service Instructions for
additional information.
G.
If boiler is used in connection with refrigeration
systems, boiler must be installed with chilled medium
piped in parallel with the heating boiler using
appropriate valves to prevent chilled medium from
entering boiler, see Figure 6. Also consult I=B=R
Installation and Piping Guides.
Figure : Recommended Piping for Combination
Heating & Cooling (Refrigeration) Systems
WARNING