If flexible stainless steel tubing is allowed by the authority having jurisdiction, wrought iron or steel pipe must be installed at the gas valve and extend a minimum of two (2) inches outside of the unit casing.
FLUE VENT HOOD
The flue vent hood with screen is not shipped attached. This hood must be installed to assure proper unit operation. The hood must be fastened to the outside of the side gas control/ electrical compartment with the screws provided in the bag attached to the inside of the gas control/electrical compart- ment, see Figure 6.
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Natural gas may contain some propane. Propane being a excellent solvent, will quickly dissolve white lead or most standard commercial com- pounds. Therefore, a special pipe dope must be applied when wrought iron or steel pipe is used. Shellac base compounds such as gaskoloc or sta- lastic, and compounds such as rectorseal # 5, Clyde’s or John Crane may be used.
4.All piping should be cleaned of dirt and scale by ham- mering on the outside of the pipe and blowing out the loose dirt and scale. Before initial
5.The gas supply should be a separate line and installed in accordance with all safety codes as prescribed under Limitations. After the gas connections have been com- pleted, open the main
NEVER USE A FLAME.
6.The furnace and its individual manual
The furnace must be isolated from the gas supply piping sys- tem by closing its individual manual
Flue hood surfaces may be hot.
VENTOUTLETSCREEN
FLUEVENTOUTLET
AIRHOOD
FIGURE 6 - FLUE VENT OUTLET AIR HOOD
The flue exhaust hood must be properly installed and within the recommended clearances. Further communications and action must be given to the home or building owner(s) to eliminate any unau- thorized human contact around this area during the heating cycle. Flue hood surface and immedi- ate area are designed to operate at high tempera- tures during the heating cycle.
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