Service Procedures For Ball Float Condensate Trap; Ball Float Condensate Trap - Lennox G21Q3-40 Unit Information

BALL FLOAT CONDENSATE TRAP ASSEMBLY
G21 AND GSR21
EXHAUST
OUTLET
EXHAUST
INLET
FLOAT CAP
FLOAT
SEAT
CLAMP
SCREW
(2) PROVIDED
FIGURE 52
When installing a ball float trap, certain precautions should be
taken. Condensate trap housing must be cemented to the out
let exhaust pipe perpendicular with the bottom of unit to ensure
proper operation of trap float. Complete installation procedures
are outlined in GSR21 installation and operation instructions.

BALL FLOAT CONDENSATE TRAP

(GSR21 HORIZONTAL APPLICATION)
EXHAUST PIPING
INTAKE
CONNECTION
COMPRESSION
COUPLING
1/2" X 5−1/2"
PVC VENT
1/2" PVC
CONDENSATE
DRAIN
FIGURE 53
HOUSING
CLAMP
NUT
(2 PROVIDED)
DAM
O−RING
TRAP ASSEMBLY
BARBED FITTING
(Point toward
pressure switch)
CONDENSATE
TRAP
1/2" PVC
MALE ADAPTER
1/2" X 2"
1/2" PVC TEE
PVC NIPPLE
BALL FLOAT CONDENSATE TRAP
(GSR21 DOWNFLOW APPLICATION)
CONDENSATE
TRAP
COMPRESSION
COUPLING
BARBED FITTING
(Point toward
pressure switch)
INTAKE
CONNECTION
EXHAUST NIPPLE
1/2" PVC ELBOW
Service Procedures for Ball Float
1 − Remove screws and clamps from condensate trap as
sembly.
2 − Lower trap assembly from housing. Care should be
taken not to crack seal from housing to exhaust pipe
and compression coupling.
3 − Disconnect trap assembly from condensate line.
4 − Remove float cap, float, seat, and o ring and visually
inspect for cuts or breakdown of material. If seat, float
or o ring are worn, a G21/GSR21 Condensate Trap
Parts Replacement Kit is available from Lennox Repair
Parts.
5 − Use a 1/4" hex wrench, remove plastic dam located in
condensate line connection of trap assembly. Check
interior of trap assembly for debris.
6 − Clean trap assembly with a mild soap and rinse thor
oughly.
7 − Carefully reinstall dam, seat, float, float cap, and o ring
to trap assembly. If float cap does not snap closed, the
entire trap assembly must be replaced.
8 − Connect trap assembly to condensate line.
9 − Lubricate o ring with water or silicone based lubricant
and reinstall trap assembly to housing. Using existing
clamps and screws, secure trap assembly to housing.
Page 42
EXHAUST PIPE
1/2" PVC
MALE ADAPTER
1/2" X 2"
PVC NIPPLE
1/2"
1−1/2" PVC PVC TEE
CONDENSATE
FIGURE 54
Condensate Trap
1/2" X 5−1/2"
PVC VENT
1/2" PVC
DRAIN