Fan Control; Operating Instructions - PSG CADDY Installation And Operating Instructions Manual

FAN CONTROL

The fan control settings vary depending on the type of installation. The "fan off" setting is
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preset at 110 F at the factory. This setting should provide a proper operation in most
installations. The "fan on" setting is factory set at 150
It is preferable for a prolonged operation of the blower that the "fan off" setting be low
enough. But a "fan off" setting too low will cause undesirable cold air circulation. To modify
the setting, turn the indicator at the desired position on the temperature scale of the fan limit
control.
The adjustment of all controls must be performed by a qualified technician. The controls
and the blower speed settings must conform to the recommendations of the "Warm Air
Heating and Air Conditioning National Association".
The switch located below the fan limit control operates the low speed either at the "on"
position or the "off" position. For a better efficiency we recommend to leave the high speed
on automatic for heating and to use the low speed for continuous air circulation.
It is possible that the blower and motor pulleys have to be replaced in order to obtain the
desired air flow through the system. (The use of a more powerful motor is permitted on the
belt driven blowers). Direct drive motors may not be replaced but they may be upgraded by
replacing the capacitor.
WARNING

4. OPERATING INSTRUCTIONS

Start the existing heat generator periodically to make sure it is in good working
condition
.
On the wood furnaces, the thermostat controls the air inlet damper. When the thermostat
calls for heat, the damper opens and the combustion is stirred up. When the furnace gets hot
enough, the fan limit control activates the blower motor at the speed selected for wood
heating.
The chain that links the air inlet latch to the damper motor must have a 1/8 inch play.
When there is no call for heat, the air inlet latch must be completely closed and the chain
must be hooked up to the damper motor at the "8 o'clock" position. *
*(With all reserve for the minimum air intake to be increased depending on the type and
quality of the combustible).
: the blower of the existing furnace may not be changed.
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F.
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