Water Piping And Trim - Burnham Revolution Installation, Operating And Service Instructions

V. Water Piping and Trim
Failure to properly pipe boiler may result in improper operation and damage to boiler or structure.
The Revolution boiler contains internal controls and piping to control water temperature. Do not pipe
system with a bypass.
Oxygen contamination of boiler water will cause corrosion of iron and steel boiler components, and
can lead to boiler failure. Burnham'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 contami-
nation 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 distribu-
tion system.
e. Isolating the boiler from the system water by
installing a heat exchanger.
f. Use properly designed and operating air elimina-
tion devices in water piping.
B.
Connect system supply and return piping to boiler.
See Figures 28 and 29. Also consult I=B=R Installation
and Piping Guides. Maintain minimum ½ inch clear-
ance from hot water piping to combustible materials.
Refer to Burnham Radiant Heating Co. manual for
radiant floor system piping recommendation.
C.
Install System Circulator - Connect system circulator
to proper wiring. (See Section VII. Electrical)
44
WARNING
System supply and return piping must be
connected to correct boiler pipe.
Do not operate boiler with a system return
temperature less than 55°F.
System circulator not included with boiler.
System circulator must be mounted on system
supply.
Burnham recommends sizing the system
circulator to supply sufficient flow (GPM) to
allow a 0°F temperature differential in the
system. The boiler circulator (inside jacket)
is already sized to provide the correct flow
through the boiler. When sizing the system
circulator, the pressure drop of all radiators,
baseboard and radiant tubing and all
connecting piping must be considered.
D.
Install Pressure Relief Valve. See Figure 28. Pressure
Relief Valve must be installed with spindle in vertical
position. Installation of the relief valve must comply
with the ASME Boiler and Pressure Vessel Code,
Section IV.
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.
CAUTION
NOTICE
WARNING