TW2000 WOOD–FIRED BOILER – INSTRUCTION MANUAL
TW2000 6 Jan-08
WARNING – Ashes usually contain live dormant coals, which may burn for many hours after a
recognizable flame has disappeared. Use extreme caution when handling and disposing
ashes.
IMPORTANT – No other waste shall be placed in this container.
1.6 SAFETY
If the boiler overheats due to improper operation the following precautions should be taken:
1) DO NOT shut off power. The circulation pump must be kept running to disperse
excessive heat.
2) Manually close the damper door by unhooking the chain.
3) Increase all thermostats in the house to maximum to help disperse excessive heat.
4) Excessive heat caused by extreme over-firing or a control malfunction may cause the
relief valve to blow off water/steam into the firebox. Do not be alarmed. The relief valve
will reseat when the excessive pressure has been released.
5) Do not add more fuel until you are certain that all controls are functioning properly and no
damage has been done to the boiler.
WARNING – The maximum opening of the combustion air damper is preset at the factory. DO
NOT adjust the stop or attempt to increase the combustion air by any means.
1.7 ELECTRICAL POWER FAILURE
If no one is home during a power failure, the safety bypass zone valve will automatically open
and some gravity heating will take place. The damper door will automatically close, but
combustion air will continue to enter through the secondary air holes and a fire should be
maintained. For optimum heating during a power failure follow the procedure listed below:
1) Manually open all zone valves and flow check valves to allow gravity flow to all areas.
(Check with your installer)
2) Place a coin under the damper flap in such a way that it will fall clear when power is
restored and the damper motor operates.
3) Maintain a careful watch on the boiler water temperature. If it should exceed 200º F (95º
C) close the damper door.
4) Do not leave the boiler unattended in this position.
5) Refuel frequently with a small load to maintain a small fire at 1/2 normal maximum
volume.
6) Do not expect to maintain maximum comfort under no power conditions.
7) Do not allow anyone who is unfamiliar with the operation of the Boiler to attend it during a
power failure.
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