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TW2000 WOOD-FIRED BOILER – INSTRUCTION MANUAL
TW2000 10/6/05
7
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 ½
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.