For safe and proper operation of the appliance, follow the venting instructions exactly. All
inner fl ex pipe and outer fl ex pipe joints may be sealed using high temperature sealant
W573-0002 (not supplied) or the high temperature sealant W573-0007 Mill Pac (not
supplied). However, the high temperature sealant W573-0007 Mill Pac (not supplied)
must be used when connecting the reducer to the exhaust of the appliance and when
connecting the 4” (101.6mm) stainless steel fl ex vent to both the reducer and the coupler.
DO NOT ALLOW THE INNER FLEX PIPE TO BUNCH UP ON THE HORIZONTAL OR VERTICAL RUNS AND ELBOWS.
KEEP IT PULLED TIGHT.
SPACERS ARE ATTACHED TO THE INNER FLEX PIPE AT PREDETERMINED INTERVALS TO MAINTAIN AS EVEN AIR GAP TO
THE OUTER FLEX PIPE. THIS GAP IS REQUIRED FOR SAFE OPERATION. A SPACER IS REQUIRED AT THE START, MIDDLE
AND END OF EACH ELBOW TO ENSURE THIS GAP IS MAINTAINED. THESE SPACERS MUST NOT BE REMOVED.
ADDING VENT LENGTH
If more vent pipe needs to be used to reach the appliance, couple
them together as illustrated. The vent system must be supported
approximately every 3 feet (0.9m) for both vertical and horizontal runs.
Use noncombustible strapping to maintain the minimum clearance to
combustibles.
NOTE: The fi rst inner fl ex pipe that connects to the 4”
(101.6mm) reducer must be stainless steel.
When installing the venting, these parameters supersede the Vent Installation
Section in the appliance's Installation and Operating Instructions, use the
following guidelines:
Maximum horizontal vent run with no rise is 70 feet total.
H = HORIZONTAL RUN
V = VERTICAL RUN
MAX H+V
MIN H+V
MAX ELBOWS
65 FEET
10 FEET
SIX 90°
VENT LENGTHS
W415-4076 / A / 03.08.22
