water cut-o:, which ts the ¾ inch tapping on the
rear of the boiler.
is control must never be hot
wired or disconnected since it prevents the boiler
from ring should the water level drop below the
safe operating level.
A water level gauge glass is also provided to give
a visual indicator of the level of water in the boiler.
is gauge is located in tapping FF on the rear of the
boiler and a section of piping, which originates from
a tapping in the top of the boiler near the rear.
An automatic water feeder or combination water
feeder/low water control such as a McDonnell-Miller
model 47-2 is required to ensure that the proper
water level is maintained. Some states or
municipalities require two low water control devices
in series.
e two controls described above will meet
this requirement.
For steam systems other than gravity return
consult Alternate Heating Systems for proper
controls. Do not a7empt to connect two di:erent
steam boilers in parallel since the water level in each
boiler will not be the same.
Note that steam models are wired di:erently than
hydronic models. See Appendix B for Wood Gun
wiring diagrams. Contact Alternate Heating Systems
if you need a diagram not included in this manual.
FORCED HOT AIR SYSTEMS
(WATER TO AIR COIL IN DUCT)
e Wood Gun™ boiler may be easily adapted to
any forced hot air heating system by installing a heat
exchange coil in the supply duct.
e size and type of
coil required may be determined a9er several factors
are determined.
ese factors include: the heat
output required (BTUH), the capacity of the existing
fan blower (CFM) and the size of the duct or plenum
where the coil will be installed.
e coil creates increased resistance to air Gow, so
this factor must be considered when determining the
nal airGow. Design water temperature is usually
180º F and a desirable output air temperature is 115° -
125º F.
e coil is connected in the same manner as in
other types of radiation heating equipment.
e
thermostat should be wired to both the fan blower
and the circulator pump or a temperature-sensing
switch on the heat exchange coil. If a hole was cut in
existing ducting to install the coil, the opening
should be closed tightly with a metal cover and
sealed with duct tape.
DOMESTIC HOT WATER
COIL PIPING
Plumbing – Coil in Series
e Wood Gun™ may be 7ed with one or more
domestic hot water coils, which thread into 4 inch
tapping’s in the boiler.
ere are three methods for
plumbing the domestic coil. One way is to connect
the coil in series with an existing hot water heater.
A second method of plumbing the domestic coil is
to connect the coil in parallel with an existing water
heater so that the conventional water heater may be
- 14 -
Tip: To increase coil performance, increase boiler
water temperature.
It is very important that a steam
boiler be properly leveled so that
the water feeder and low water
cutoff controls function properly.
Summary of Contents for wood gun E100 SF
Page 2: ......
Page 24: ...Photo Smoke flap installed 19 ...
Page 46: ...Steel Center Brick 8 Inch 41 ...
Page 49: ...Appendix A Boiler Specification Diagram 44 ...
Page 50: ... 45 ...
Page 51: ... 46 ...
Page 53: ...Appendix B Wiring Diagrams 48 ...
Page 54: ... 49 ...
Page 55: ... 50 ...
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Page 60: ... 55 ...
Page 61: ...Appendix C Exploded Parts Drawings 56 ...
Page 63: ... 58 ...
Page 68: ...Appendix F Boiler Piping and Ducting Examples 63 ...