Lennox G21Q3-40 User Manual

Page 39
EXHAUST PIPE
(2" PVC)
TYPICAL GSR21 DOWNFLOW INSTALLATION*
GAS
CON
NECTOR
INTAKE PIPE
(2" PVC)
BLOWER
ACCESS
PANEL
CONDENSATE
TRAP
CONTROL
ACCESS
PANEL
COMBUSTIBLE FLOOR
ADDITIVE BASE
REQUIRED ON
COMBUSTIBLE FLOORS
ISOMODE PADS(4)
INSULATION
UNIT
MUFFLER**
MUFFLER**
1−1/2" PVC
ISOMODE PADS(4)
RETURN
SUPPLY
COMBUSTIBLE FLOOR
ADDITIVE BASE
REQUIRED ON
COMBUSTIBLE FLOORS
**ALL G21/GSR2180/100 UNITS REQUIRE THE USE OF MUFFLERS.
MUFFLERS ARE RECOMMENDED OPTIONS ON ALL OTHER UNITS.
*INSTALLATION PROCEDURES OUTLINED IN THIS MANUAL ARE PRESENTED AS
RECOMMENDATION ONLY AND DO NOT SUPERSEDE OR REPLACE LOCAL OR STATE
CODE. IF LOCAL OR STATE CODES DO NOT EXIST, THE PROCEDURES OUTLINED IN THIS
MANUAL ARE RECOMMENDED ONLY AND DO NOT CONSTITUTE CODE.
RETURN AIR PLENUM
1.5 TO 3 LB. DENSITY, MATTE FACE,
1 INCH THICK INSULATION
INSULATED PAST FIRST ELBOW
SUPPLY AIR PLENUM
1.5 TO 3 LB. DENSITY, MATTE FACE,
1 INCH THICK INSULATION
INSULATED PAST FIRST ELBOW
FLEXIBLE BOOT IN
DUCT (SUPPLY AIR)
FLEXIBLE BOOT IN
DUCT (SUPPLY AIR)
FLEXIBLE BOOT IN
DUCT (RETURN AIR)
FLEXIBLE BOOT IN DUCT (RETURN AIR)
MANUAL
MAIN SHUT OFF VALVE
DRIP LEG
FIGURE 44

Lennox G21Q3-40 Specifications

General

Brand	Lennox
Model	G21Q3-40
Category	Industrial Equipment
Language	English