SCOTTY SS DB-202A, Owner'S Manual

Page: 22 / 49

SCOTTY SS – INSTRUCTION MANUAL
Scotty SS Nov-05 21
2.8.2 TEMPERATURE RISE TEST
As an alternative to the static pressure test the installer may make adjustments on the
basis of temperature measurements. For this test the wood furnace must be at full
operating temperature.
Procedure:
1. Take one air temperature T1 through a small hole in the front of the electric
outlet duct. Make sure you leave the thermometer in the air stream long
enough for the reading to stabilize.
2. Take a second air temperature T2 through a small hole in the front of the
WOOD furnace outlet plenum.
3. The temperature difference T2 – T1 is the air temperature rise and must be
within the range 40-100°F during normal operation. Ideally it should be 80°F.
4. Use the same adjustments as in 2.8.1 above to correct a temperature rise
above 100°F or below 40°F.
CAUTION – Most thermometers take several minutes to reach their true reading. With
the thermometer in the same position in the hot air stream take two successive readings
10 minutes apart – if they are the same the temperature reading may be taken as
stabilized.
To check your thermometer accuracy immerse it in boiling water – it should read 212°F.
2.9 Additional Notes
- DO NOT relocate any of the safety controls in the original oil furnace installation
-
DO NOT relocate any of the safety controls in the electric furnace installation.
- Operate the oil-fired unit or electric furnace periodically to ensure that it will
operate satisfactory when needed.
- DO NOT connect ductwork so that reverse flow is possible.
- Before attempting installation, determine if there is space available in the furnace
area for the proposed ADD-ON.
- The external static pressure in the warm air duct to the house in the original
system must be measured prior to any changes in the system. The static
pressure is to be reset to the same value after the ADD-ON is installed to
maintain the airflow through the oil/electric furnace.