Owner`s manual

SCOTTY SS – INSTRUCTION MANUAL
Scotty SS Nov-05
26
3.3 CONTROL SYSTEM
3.3.1 ADD-ON TO OIL CONTROL KIT “A” (Fig S202-2, Fig S202-5)
Control kit “A” is required for ADD-ON to Oil installation of the KERR SCOTTY SS Wood
furnace model DB-202A.
ADD-ON to Oil – wiring diagram see Fig. S202-5 – layout diagram See Fig. S202-2
Kit “A” consists of the following:
1. L4064R1027 11” Primary Fan Limit Control (Wood Furnace) with mounting
standoff. Fan “ON” – 140° F, Hi Limit – 280° F. – See description below.
2. One stand off bracket for fan limit.
3. M847A1031 Draft Damper Motor complete with chain and S hook. Lifts damper
in response to wood thermostat’s call for heat. Be sure that damper gate is fully
closed when damper motor is not powered. Connect chain to first or second hole
up in wheel. Leave bottom chain link open for emergency disconnect – see
description below.
4. T822D1826 thermostat. In oil ADD-ON installations, mount adjacent to oil
thermostat and label “wood” – Heat anticipator setting, 0.32 amps – See
description below.
5. Switching Relay (White Rodgers 8A05A-4) or equivalent.
Prevents wood furnace and oil furnace from firing at the same time. Damper
Control mounting plate c/w decal.
6. One 48” wood to oil wiring harness.
7. One stand off cable bracket (175 mm x 30 mm).
8. 8 ½” x #8 sheet metal screws.
9. Wiring harness c/w 4” x 4” box, one flex conduit, wire nuts, antishorts and
squeeze connectors.
10. 3 – 1-1/2 x #10 sheet metal screws for fastening fan control to mounting bracket.
IMPORTANT – follow carefully the electrical schematic (decal on wood furnace cabinet
or Fig. S202-5). Both wood and oil furnaces must be supplied by the same single
electrical branch circuit. A ground wire is necessary between the wood and oil
furnaces.