Duct Design And Burner Mounting; Start-Up And Adjustment; Pilot Cock; Pressure Measurement - Eclipse Combustion AH Installation Manual

3.0

Duct Design and Burner Mounting

Duct Design
Support
Valve Train Support
Gas Piping
Check Valve Piping
Gas Piping Standards
Wiring Standards
4.0

Start-Up And Adjustment

Initial Settings
Start Blower
Start Circulating Fan
Figure 6–Pilot Cock
Handle
(Shown in
Open Position)
Adjusting Screw
(Clockwise for less pilot gas,
Counterclockwise for more pilot gas)
6
See Figure 5 for typical mounting arrangements and duct designs.
The mounting flange or brackets supplied with an AH burner are capable of sup-
porting the weight of the burner and blower. The AH burner case itself is de-
signed to support the weight of the blower, so the blower does not require inde-
pendent support.
Support valve trains independently of the burner.
Use flexible nipples to allow for thermal expansion of the burner.
Gas flow through the check valve must be horizontal. See Figure 3.
Gas piping must comply with American National Standard entitled "National Fuel
Gas Code"* (NFPA No. 54 or ANSI Z223.1), or must be acceptable to the author-
ity having jurisdiction.
Electrical wiring must comply with the National Electric Code*, (NFPA Std. 70 or
ANSI-CI 1981), or must be acceptable to the authority having jurisdiction.
*Available from:
National Fire Protection Association
Batterymarch Park
Quincy, MA 02269
Adjust the linkage of the gas control valve so that when heat is called for, the
valve is 10° from fully open, and when cooling is required, the valve is approxi-
mately 5° from fully closed.
Close all manual gas cocks.
With the pilot cock handle in the closed position, remove the top screw and turn
the adjusting screw five turns out from fully closed. See Figure 6.
Start the combustion air blower on the burner. Check the rotation to make sure it
is correct. If not, have a qualified electrician rewire the blower for proper rotation.
Start the duct circulating fan.
Top Screw
Eclipse AirHeat v1.0 - Installation Guide No. 140, 11/4/03
American National Standard Inst.
1430 Broadway
New York, New York 10018
Figure 7–Pressure Measurement
Air Pressure
Taps (2)
Gas
Pressure
Tap
Duct Tap
10" to 20"
Downstream of Burner