51
Fig 20: Horizontal Room Sealed Flueing
Fig 21: Vertical Room Sealed Flueing
MOTORIZED COMBUSTION AIR DAMPERS OR LOUVERS
When dampers or louvers are communicating directly with outside combustion air, they must be
interlocked with each appliance in the equipment room, to ensure proper operation. See
and Ancillary Connections” on page 68 for proper wiring instructions, using external interlock.