Roberts Gorden Gas-Fired - Manual (Page 43)

SECTION 8: V ENTING
37
8.10 Common Vertical Venting
Requirements:
• Maximum of four heaters can be commonly vented
through the roof.
• Heaters must be of the same BTU output.
• Heaters must be controlled by a common
thermostat.
• Connections to a common stack must be posi-
tioned to avoid direct opposition between streams
of combustion gases.