Use and Care Manual

507277-03CPage 14 of 53 mrcool.com
Joint Cementing Procedure
NOTE:
DANGER OF EXPLOSION!
DANGER
NOTE:
NOTE:
Venting Practices
Figure 19. Piping Suspension Guidelines
* SeeTable4 for allowable pipe.
NOTE: Isolate piping at the point where it exits the outside wall or
roof in order to prevent transmission of vibration to the structure.
SCHEDULE 40
PVC − 5’
all other pipe* − 3’
Wall
edistuoedisni
24"maximum
3/4"minimum
Wall Thickness Guidelines
insulation
(if required)
Figure 20.
CHIMNEY
OR GAS
VENT
(Checksizing
for remaining
appliance)
FURNACE
(Removed from
from common
vent system)
WATER
HEATER
OPENINGS
(To Adjacent
Room)
REPLACING FURNACE THAT
WAS PART OF A COMMON
VENT SYSTEM
If this gas furnace replaces a furnace which was
commonly vented with another gas appliance,
the size of the existing vent pipe for that gas appliance
must be checked. Without the heat of the original
furnace flue products, the existing vent pipe is
probably oversized for the single water heater or
other appliance. The vent should be checked for
proper draw with the remaining appliance.
Exhaust Piping
See Figure 22