GNOME DIRECT VENT GAS HEATER
13
FIGURE 3 – BOTTOM VIEW SHOWING AIR SHUTTER AND LOCATION FOR PRESSURE
GAUGE INSERTION
(Burner must be removed to access air shutter)
ORIFICE INFORMATION
Factory installed orifices are as follows:
Natural Gas = #43 (up to 4,500’ elevation)
LP Gas = #55 (up to 4,500’ elevation)
Recommendation: If installing at higher altitudes, Thelin recommends, at the discretion of the installer:
Natural Gas = #45 (5,000’ to 7,000’ elevation)
LP Gas = #56 (5,000’ to 7,000’ elevation)
REMEMBER! The size of the orifice hole should be reduced the higher the elevation.
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