SCOTSMAN WOOD FURNACE – INSTRUCTION MANUAL
Scotsman
Jun
-10
16
As an alternative to the static pressure test method, the installer may make adjustments on the
basis of temperature measurement. For this test wood furnace must be at full operating
temperature.
Take one temperature measurement in the front of the oil furnace plenum 12” to 16” up or
approximately center. Take a second measurement in the wood furnace plenum (same
position). Subtract one measurement from the other to arrive at a temperature difference (TD).
The TD must be between 40°F and 100°F during normal operation, and ideally around 80°F.
The same adjustment procedure for pulleys applies for correction when using this method.
CAUTION
– Most thermometers have a large time lag in reaching accurate measuring levels.
It is important that this interval be measured for your thermometer by immersing it in boiling
water and observing the time required for it to reach correct reading.
IMPORTANT
– This equipment shall be installed in accordance with the instructions of the
manufacturer and in a manner acceptable to the regulatory authority by technicians
experienced in such services. When required by the regulatory authority, such technicians
shall be licensed to perform this service.
The installation shall comply with the applicable requirements of CSA standard B365,
Installation Code for Solid Fuel Burning Appliances and Equipment, and if changes are made
to the oil furnace this shall comply with CSA Standard B139, Installation Code for Oil Burning
Equipment.
2.8 Control
System
(Fig. S101-5)
The fan and limit control and the damper motor should be located as shown in Fig. S101 - 5.
The control system serves the following functions:
T822 – Room Thermostat – Wood Furnace
The primary control is the room thermostat located near the center of the house in the main
floor or near an existing thermostat. The thermostat operates the damper motor to open and
close the damper door thus allowing more or less air into the combustion area to control the
fire.
M847 – Damper Motor
The damper door lever should be attached to the damper motor wheel with the chain included.
Be sure the damper door is fully closed and the damper motor is not powered. Connect the
chain to the damper door level and to the bottom hole in the damper motor wheel. As a final
adjustment bend the top chain link slightly to vary the damper position.
L4064R – Wood Furnace/Limit Control
The fan and limit control mounted in the plenum controls the operation of the circulating blower
and limits the air temperature to prevent the furnace from overheating.
