Gas Manifolds | Furnace Components
90 Plus Furnace
Gas Manifolds - Furnace gas manifolds connect the valve to the main burners and it is important that the proper pressure be present inside the manifold for proper combustion. Manifold pressure is different from natural gas to liquid propane. Furthermore, this pressure needs to be set with a special instrument which the HVAC installer or HVAC start-up technician should have.
The manifold pressure should be set according to the furnace manufacturer’s instructions. This is done by an adjustment on the regulator and valve as noted in the valve section (see gas furnace components). The setting will depend on the type of fuel, natural gas or LP, and the manufacturer’s instructions.
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