Heatmor 400-4S, Руководство пользователя

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47
CHAPTER 14
AIR SUPPLY
Maximum draft should not exceed 0.20 inches water column, if exceeded could cause solid fuel fire to burn out
of control.
Combustion Air Blower, Solenoid and Flipper
THE FLIPPER AND SOLENOID MUST OPERATE PERFECTLY OR PROBLEMS QUICKLY ARISE.
Principles
The combustion air blower, solenoid and flipper supply air for combustion inside the firebox. The solenoid
and flipper keep air out of the firebox when combustion is not needed. These components are removable and
serviceable.
Operation of the Combustion Air Blower
- When the water temperature reaches the high water temperature setting, the controller will turn the blower
off and using the solenoid it will close the flipper which will prevent
air from getting into the firebox.
-When the water temperature reaches the low water temperature
setting, the controller will turn the blower on and using the solenoid
it will open the flipper and force air into the firebox.
-The flipper must completely open and close all of the time.
When it is closed, it must seal completely. If more than a “wiff” of
smoke is coming from the chimney when the blower has been off
for approximately 10 minutes, this is a strong indication that the
flipper is not shutting properly.
Maintenance/Result
-Clean the fan blades monthly
-Ensure that the solenoid is up when the fan is on and
not restricted in any way
Steps to maintain your combustion air blower
1) Turn off the main power supply to the furnace.
2) With a small brush, scrape any dust or residue that has
accumulated on the fins of the blower.
Removal and Replacement of the combustion air blower
1) Turn off the main power supply to the furnace.
2) Loosen and remove the four screws securing the blower to
the air tube.
3) Disconnect the electrical wires.
4) Attach the new blower to the air tube with the four screws
6) Rewire the electrical wire to the blower. Contact a licensed
electrician if you have any questions.
Combustion Air Blower
Solenoid (above the fan)