Armstrong A96UH2E - Condensate Piping

507581-04 Issue 1933 Page 33 of 59
Condensate Piping
This unit is designed for either right or left side exit of
condensate piping in upow applications. In horizontal
applications, the condensate trap must extend below the
unit. An 8” service clearance is required for the condensate
trap. Refer to Figure 52 and Figure 53 for condensate trap
locations. Figure 59 shows trap assembly using 1/2” PVC
or 3/4” PVC.
NOTE: If necessary, the condensate trap may be installed
up to 5’ away from the furnace. Use PVC pipe to connect
trap to furnace condensate outlet. Piping from furnace
must slope down a minimum of 1/4” per ft. toward trap.
1. Determine which side condensate piping will exit the
unit, location of trap, eld-provided ttings and length
of PVC pipe required to reach available drain.
2. Use a large at head screw driver or a 1/2” drive
socket extension and remove plug (Figure 52) from
the cold end header box at the appropriate location
on the side of the unit. Install provided 3/4 NPT street
elbow tting into cold end header box. Use Teon tape
or appropriate pipe dope.
Figure 51. Upow or Downow Furnace with Exhaust through Crawl Space
KIT 51W18 (USA)
Basement Floor
To Te rmination
1/2” PVC to
Code-Approved
Drain
24” max.
Downflow Furnace
Exhaust
KIT 15Z70 (Canada)
* Kit 51W18 is shown.
NOTE: Upow furnaces exhaust from the left side. All dimensions shown are typical for upow or downow furnaces.
NOTE: All horizontal runs of exhaust pipe must slope back toward the kit a minimum of 1/4” (6mm) for each 12” (305mm) to ensure drainage.
3. Install the cap over the clean out opening at the base
of the trap. Secure with clamp. See Figure 59.
Figure 52. Condensate Trap and Plug Locations
(Unit shown in upow position)
CONDENSATE TRAP AND PLUG LOCATIONS
(Unit shown in upflow position)
Plug
(same on
left side)
Trap
(same on
right side)
1-1/2 in.
NOTE - In upflow applications where side return air
filter is installed on same side as the condensate
trap, filter rack must be installed beyond condensate
trap or trap must be relocated to avoid interference.