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Installation and Operation Manual
6.0
AIR DAMPER CONTROL & OPERATION
The WF200 is equipped with two air dampers, one located on the fire chamber access door, the second directly
below. Both dampers are to be operated by a single damper motor via factory supplied chain; see Figure 6-1.
Damper Motor – A damper motor is provided with each boiler, and is to be field installed at the top-right of the
front of the WF200, so the damper motor armature is directly above the two air damper arms to allow
unhindered installation and operation of the connecting chain; see Figure 6-1.
Damper
Motor
Top
Air Damper
Bottom
Air Damper
16
Figure 6-1 Connecting Damper Motor to Air Dampers
Procedure:
1. Install Damper Motor
2. Install Upper Chain – with the power off and the Air
WF200
Dampers closed, connect a piece of chain from the Damper
Left Side
Motor Armature, at approximately the 7 o'clock position,
to the Top Air Damper. Leave approximately 1-2 chain-
links of slack.
Armature
3. Install Lower Chain – use a second piece of chain to link
the top and bottom Air Dampers together. Leave 2-3
chain-links of slack, i.e. slightly more slack than the upper
chain.
4. Test (Power Off) – with the power off, both dampers
1-2 Links
MUST BE FULLY CLOSED. If not fully closed, adjust
of Slack
chains and/or Air Damper Arms accordingly.
5. Test (Power On) – as the Damper Motor turns, rotating
clockwise from the 7 o'clock position, the Top Air Damper
will begin to open, shortly followed by the Bottom Air
Damper. The timing between the opening of the two Air
Dampers is accomplished by the increased slack of the
lower chain, and is necessary to avoid excess strain on the
Damper Motor. If adjustments to the chains or Air Damper
2-3 Links
Arms are necessary, repeat the Power Off test to ensure the
of Slack
dampers close fully during a power outage.
WF200
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