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CADDY ADD-ON
Run an 18-2 cable from the thermostat (A) of the Add-on to the fan limit
assembly’s junction box (D).
Run an 18-2 cable from the thermostat (B) of the existing oil furnace to the
fan limit assembly’s junction box (D).
Run an 18-2 cable from the servomotor (C) of the Add-on to the fan limit
assembly’s junction box (D).
Note: To perform the wiring, see WIRING DIAGRAM FOR CONNECTION OF
THE CADDY ADD-ON WITH AN EXISTING OIL FURNACE (Section 3.1.5.4)
Note: For connection with an existing gas or electric furnace, remove the fan limit
control (C) from the assembly and use it for low voltage. Connection with a gas
or electric furnace will require the use of a SPDT 24 volt relay (White-Rogers 90-
370 or the equivalent) not included. See WIRING DIAGRAM FOR
CONNECTION OF THE CADDY ADD-ON WITH AN EXISTING GAS OR
ELECTRIC FURNACE (see section 3.1.5.5).
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