![](/images/new-backgrounds/1058313/5831345x1.webp)
NOTE: Side
For bottom
2.Rotate front filler panel downward to release holding tabs.
3.Remove bottom closure panel.
4.Reinstall front filler panel and screws.
Gas Piping
CASINGS ONLY:
INSTALL
3″ |
(76mm) |
24 1/2″ |
(533mm) |
1″ |
(25.4mm) |
Gas piping must be installed in accordance with national and local codes. Refer to NFGC in the U.S. Canadian installations must be made in accordance with
!WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death, or property damage.
355CAV
WASHABLE
FILTER
FILTER
FILTER RETAINER
SUPPORT
A00290
Fig. 25 - Bottom Filter Arrangement
NOTE: Remove and discard bottom closure panel when bottom inlet is used.
Bottom Closure Panel
These furnaces are shipped with bottom closure panel installed in bottom
To remove bottom closure panel, perform following:
1.Tilt or raise furnace and remove two screws holding front filler panel. (See Fig. 26.)
-Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls.
-Gas valve shutoff switch MUST be facing forward or tilted upward.
-Never purge a gas line into a combustion chamber. Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connections.
-Use proper length of pipe to avoid stress on gas control manifold.
-If a flexible connector is required or allowed by authority having jurisdiction, black iron pipe shall be installed at furnace gas valve and extend a minimum of 2 in. (51 mm) outside furnace casing.
Install a sediment trap in riser leading to furnace. Trap can be installed by connecting a tee to riser leading to furnace so
An accessible manual shutoff valve MUST be installed external to furnace casing and within 6 ft. (1.8M) of furnace. A
Gas line grommet
23