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F- ELECTRICAL CONNECTION
MINI-CADDY WOOD ONLY
To install the Mini-Caddy in wood only configuration, the use of the PSG "fan limit kit for wood only furnaces" option
(PA00500) is required and it has to be ordered separately.
The combined limit control is part of that wiring kit and it must be mounted near the flue outlet, where holes are set
for the control's sensor and mounting screws. Once in place, the limit control will not be vertical and this is normal.
Plastic bushings are installed on the edge of the blower compartment that let you run the metal jacket cable (14-3) to
the junction box inside the blower compartment where the blower connections will be done.
The 24 volts control circuit will be fed from the transformer mounted to the fan limit junction box and the main power
input (115 volts) will also connect into that box.
Make connections as instructed in the diagram included in this manual
Warning: Use wiring suitable for 75°C or more
MINI-CADDY WOOD/ELECTRIC
The use of the "fan limit kit for wood only furnaces (PA00500)" option is not required for installation of the Mini-
Caddy in wood/electric configuration as the 11.25kw electric unit option includes all the electrical components
required for that type of installation.
The combined limit control must be mounted near the flue outlet as in the wood only installation; the metal jacket
cable (14/4) that is attached to it will run to the electric unit inside the furnace through the plastic bushings on the
edge of the blower compartment and the knock-outs in the dividing panel and the side of the electric unit. Connect
as showed in the wiring diagram included with the electric unit.
Another piece of metal jacket cable (14/3) is included with the electric unit and it will run inside the furnace, through
the knock-out in the dividing panel, and connect the blower to the power block in the electric unit (as showed in the
diagram).
The 24 volts control circuit will also be fed from the electric unit and will be connected to the command block
(numbered 1 to 8) as in the diagram.
The main power supply (6/3) will enter the electric unit through the knock-out on the left front panel and connect to
the supply terminal (L1, N, L2) as in the diagram.
Warning: Use wiring suitable for 75°C or more.
The electric unit has two separate internal protections against overheating: one is a L-200 automatic reset
thermodisc and the other one is a L-250 manual reset thermodisc.
In the first generation units, the L-200 does not exist and a second combined limit control is included with the units; it
must be mounted on the left side of the furnace, right of the electric unit where there is a knock-out for the limit's
sensor, and the metal jacket cable (14/2) must be connected in the unit as showed in the diagram that comes with
that unit.
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