Alternate Heating wood gun E100 SF, Installation And Operator'S Manual

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boiler near the front. Alternately, a “T” and short
nipple could be a7ached to the return tapping for the
location of the boiler drain.
Piping the Boiler in Parallel with Another
Boiler
e Wood Gun™ may be connected to a heating
system supplied by one or more boilers that are
already in place. To connect the boiler to the existing
boiler run the supply pipe with a Gow check from the
Wood gun and Tee into the supply pipe of the
existing boiler.
is pipe will carry hot water to the
existing boiler when there is no heat demand and
will in turn keep the existing boiler from turning on.
e return pipe with a circulator pushing toward the
Wood gun will Tee into the return line of the existing
boiler. It is required that the piping be such that
excessive pressure will not be developed in any
portion of the boiler or system.
e circulator will
constantly run when the Wood Gun boiler is on.
Wire the circulator to the Wood Gun boiler in such a
way that when the boiler switch is on the circulator
will also run.
e power to the Wood gun should
then be controlled by an aqua stat located in the
supply piping.
is aqua stat should be set 10ºF
above operating temperature of the existing boiler.
at will shut the Wood gun down if it runs out of
fuel. e aqua stat will need to have a bypass switch
that will allow the wood boiler to have power and
enable it to be started so that it can be warmed to its
operating temperature.
ere are many possible con gurations that allow
for an existing boiler to function as a backup to the
Wood Gun™. For sample illustrations of multiple
boiler con gurations, see Appendix F.
Pressure Relief Valve
A pressure relief valve should be inserted into
tapping DD on all models through E250 and in
tapping CC on model E500 and larger.
Pressure Relief Valve
e purpose of extending the pipe to the Goor is
to direct any blowout of scalding water downward
instead of outward.
is reduces the likelihood of
exposing bystanders to a scald hazard.
Pressure Reducing Fill Valve
If the Wood Gun™ is installed as the primary
boiler, it is necessary to provide for water supply
using a pressure regulating valve and backGow
prevention valve in the feed water line.
Pressure regulating valve and backflow prevention
valve configuration
Expansion Tank Selection
Closed loop systems require the use of an
expansion tank. Refer to Appendix A: Additional
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Note: A length of copper pipe must be connected
to the pressure relief valve continuing to a point 6
in from the floor as shown in Figure 3 above.