HeatRite VM-115, Installation, Operation & Service Manual, Page: 40 / 80

VM-S
ERIES
I
NSTALLATION
, O
PERATION AND
S
ERVICE
M
ANUAL
34 of 71
8 .10 Common Vertical Ventin g
Req u irements:
• Maxim u m of fo u r heaters can be commonly v ented
thro u gh the roof.
• Heaters m u st be of the same BTU o u tp u t.
• Heaters m u st be controlled by a common
thermostat.
• Connections to a common stack m u st be
positioned to a v oid direct opposition bet w een
streams of comb u stion gases.