Roberts Gorden operation & service Service Manual download pdf (Page 46)

HE-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL

8.11 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.

8.12 Outside Combustion Air Supply IMPORTANT: If the building has a slight negative

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Roberts Gorden operation & service Service Manual Page 46