Installation guide

LINECONTACTONLYPERMISSIBLEBETWEEN
LINESFORMEDBYINTERSECTIONSOF
THETOPANDTWOSIDESOFTHEFURNACE
JACKETANDBUILDINGJOISTS,
STUDS,ORFRAMING.
ENTRY VENT
EQUIPMENTMANUAL
SHU_OFFGASVALVE
SEDIMENT
TRAP
UNION
17 3/4" (451 mm)OVERALL
43/4 '' (121mm) UNDER DOOR
1" (25mm) UNDER FURNACE
EXTEND OUT 12" (305mm)
FROM FACE OF DOOR
30-IN. (762mm)
MIN WORK AREA *WHEN USED WITH
SINGLE WALL VENT
CONNECTIONS
H
Fig. 17 - Typical Attic Installation
A10164
RETURN
AIR
SUPPLY T,_
AIR
UPFLOW RETURN AIR CONFIGURATIONS AND RESTRICTIONS
AIR FLOW MODELS RETURN AIR RETURN AiR RETURN AIR RETURN AIR
CONNECTION 1 CONNECTmON 2 CONNECTION 3 COMBINATIONS
ONLY ONLY ONLY OF 1,2, AND 3
066.060, -22 AND YES YES YES YES
-20 MODELS
ALL OTHER MODELS YES YES YES YES
UPFLOW
RETURN AIR
RESTRICTIONS
Fig. 18 - Upflow Return Air Configurations and Restrictions
A02075
17