Roberts Gorden VANTAGE II CTH2-40 - Manual (Page 42)

CTH2-S ERIES I NSTALLATION , O PERATION AND S ERVICE M ANUAL
36
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.