Filter
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Form 436, Page 22
29. Optional Guards -
Options CD10 & CD12
(Blower Models only)
These guard options are designed to provide complete pro-
tection from the rotating drive and/or blower components.
Option CD12 is designed for use with Sizes 25-100 with
standard direct drive motor. This kit includes only the blower
inlet guard.
Option CD10 is designed for use on Sizes 50-400 with a
belt driven motor and includes both the belt guard and the
blower inlet guard.
30. Optional Multiple Heater Control -
Options CL31 & CL32
The multiple heater control options are designed to permit the control of up to six
heaters (one master and five slave units) with a single thermostat or a time clock
and single/multiple thermostats.
For maximum safety, the multiple control is one in the low voltage circuit. These
multiple heater control options may not be used with two-stage gas valves.
Figure 19 - Multiple Heater Control Wiring with Options CL31
and/or CL32
Figure 20 - Optional Field-Installed Blower/Filter Cabinet
Blower Cabinet
without Filters
(Option CW1)
Figure 18 - Optional Guards
Optional
Belt
Guard
Installed
Optional
Blower Inlet
Guard
Installed
31. Optional Blower/Filter Cabinet -
Options CW1, CW2, or CW3
(Blower Models Only)
The blower/filter cabinet option is available for all sizes. The blower/filter cabi-
net is shipped separately for field assembly and installation. The cabinet is adapt-
able for use with either 1" or 2" filters and may be connected to a return air duct
(includes 3/4" duct flange). Option CW1 does not include filters; CW2 includes
1" permanent aluminum filters; and CW3 includes 2" permanent aluminum
filters.
Blower Cabinet with
Filters (Option CW2
or CW3) -- side panel
removed to illustrate
interior of cabinet
Model Filter Replacement P/N
Size Qty Size 1" Filter 2" Filter
25-125 1 20 x 20 101608 101621
165-200 1 16 x 25 101609 101622
1 20 x 25 101610 101623
250-300 2 16 x 20 101607 101620
2 20 x 20 101608 101621
400 2 16 x 25 101609 101622
2 20 x 25 101610 101623