Slant/Fin VHG-100-CH Installation And Service Manual page 60

Furnace
Figure 9.3
Furnace
Figure 9.4
60
Water
heater
Water
heater
E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
If combustion air is provided from the outside by means of
vertical ducts like above, the free size of each opening
must be minimal 1 inch
input rating of all combustion appliances in the room.
If the outside air is provided by means of horizontal ducts,
the free size of each opening must be minimal 1 inch
2,000 Btu/hr of the aggregate input rating of all combustion
appliances in the room.
Water
Furnace
heater
2
per 4,000 Btu/hr of the aggregate
2
per