3.0Duct Design and Burner Mounting
Duct Design | See Figure 5 for typical mounting arrangements and duct designs. |
Support | 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. |
Valve Train Support | Support valve trains independently of the burner. |
Gas Piping | Use flexible nipples to allow for thermal expansion of the burner. |
Check Valve Piping | Gas flow through the check valve must be horizontal. See Figure 3. |
Gas Piping Standards | 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. |
Wiring Standards | Electrical wiring must comply with the National Electric Code*, (NFPA Std. 70 or |
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| *Available from: |
National Fire Protection Association | American National Standard Inst. |
Batterymarch Park | 1430 Broadway |
Quincy, MA 02269 | New York, New York 10018 |
4.0Start-Up And Adjustment
Initial Settings | 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 Blower | 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 Circulating Fan | Start the duct circulating fan. |
Figure 6–Pilot Cock
Handle |
| Top Screw | |||||
(Shown in |
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Open Position) |
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Adjusting Screw
(Clockwise for less pilot gas,
Counterclockwise for more pilot gas)
Figure 7–Pressure Measurement
Air Pressure
Taps (2)
Gas
Pressure
Tap
Duct Tap 10" to 20"
Downstream of Burner
6 | Eclipse AirHeat v1.0 - Installation Guide No. 140, 11/4/03 |
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