25
WOODMASTER OUTDOOR FURNACES • OWNER'S MANUAL
TROUBLESHOOTING
A . BUILDING IS LOSING TEMPERATURE
1. Out of wood - Check firebox to see if fire is out. Add wood as
necessary. Use good quality wood since poor quality wood will have
very short burn times.
2. Circulation valve(s) closed - Be sure all valves in the system are open.
3. Circuit breaker off - Check the circuit breaker that supplies power to
the outdoor furnace.
4. Circulation pump(s) not operating - Check that circulation pumps are
operating. If not, disconnect power to the pump. Close valves at the
pump. Disassemble the pump and try to turn the pump shaft. If the
shaft is stuck, replace the pump cartridge. Replace only the cartridge
whenever possible. If necessary, replace the pump. Follow instructions
supplied with the pump.
5. Air in system - Check for air in the water lines or heat exchangers. If
you hear a gurgling sound in a heat exchanger, air is present in the
system. Shut off the pump, wait 15 seconds and start the pump. If it is
necessary to force air from lines, refer to Initial Start-up Procedures.
6. Outdoor furnace exhaust obstructed - Check furnace exhaust for
obstructions by observing the amount of smoke coming out of the
chimney with the firebox door slightly ajar. If smoke seems very
restricted, remove the firewood and hot coals; then check the chimney
(top and bottom) and behind the baffle for obstructions.
7. Building(s) poorly insulated or uninsulated - Poorly insulated or
uninsulated buildings, buildings with uninsulated or poorly insulated
ceilings, or a lack of proper insulation under radiant flooring can cause
excessive fuel consumption and/or heating problems.
8. Supply and return lines installed incorrectly - Make sure the hot supply
water line is connected to the correct fitting on the outdoor furnace and
heat exchanger.
9. Circulation pump(s) installed backwards - Check that pump flow
direction is correct. If not, shut off power to pump. If the flow is not
in the correct direction, disconnect pump from water line and reverse
pump mounting to correct flow direction. If the pump is not mounted
on the outdoor furnace, check for proper pump mounting location.
10. Underground supply and return lines insulated poorly - Heat loss from
poorly insulated underground supply and return lines is often indicated
by an unusually high amount of snow melting above the lines when the
ground temperature is 10
˚
F or colder.
11. Supply and return lines uninsulated - Uninsulated supply and return
lines in areas that are not intended to be heated (unheated crawl
spaces, etc.) may cause excessive heat loss. Insulate the supply and
return lines.
