Allied Air Enterprises A93DF, A95DF, 92G1DF, 95G1DF Condensate Piping, Unit with Evaporator Coil

Condensate Piping

This unit is designed for either right or left side exit of condensate piping in downflow applications. Refer to Figure 38 for condensate trap locations.

NOTE: If necessary the condensate trap may be installed up to 5” away using PVC pipe from the furnace. 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, field-provided fittings and length of PVC pipe required to reach available drain.

2.Remove plug (Figure 38) from the cold end header box at the appropriate location on the side of the unit. Install field-provided 1/2 NPT male fitting into cold end header box. Use Teflon tape or appropriate pipe dope.

3.Install the cap over the clean out opening at the base of the trap. Secure with clamp. See Figure 41.

4.Install drain trap using appropriate PVC fittings, glue all

joints. Glue the provided drain trap as shown in

Figure 41. Route the condensate line to an open drain. Condensate line must maintain a 1/4” downward slope from the furnace to the drain.

CAUTION

Do Not use copper tubing or existing copper condensate lines for drain line.

5.If unit will be started immediately upon completion of installation, prime trap per procedure outlined in Unit Start-Up section.

CONDENSATE TRAP AND PLUG LOCATIONS
Trap
(same on
right side)
1−1/2 in.	Plug
	(same on left
	side)

FIGURE 38

Condensate line must slope downward away from the trap to drain. If drain level is above condensate trap, condensate pump must be used. Condensate drain line should be routed within the conditioned space to avoid freezing of condensate and blockage of drain line. If this is not possible, a heat cable kit may be used on the condensate trap and line. Heating cable kit is available in various lengths:

6 ft. (1.8 m) - kit no. 26K68; 24 ft. (7.3 m) - kit no. 26K69; and 50 ft. (15.2 m) - kit no. 26K70.

CONDENSATE TRAP LOCATION

(shown with right side exit of condensation)

Field Provided Vent

min. 1" Above

Condensate Drain

Trap can be installed a maximum of 5 ft. from furnace. (*PVC Only)

1" min.

5’ max.

to drain

*Piping from furnace must slope down a minimum of 1/4" per ft. toward trap.

FIGURE 39

UNIT WITH EVAPORATOR COIL

Condensate trap and

Field−Provided Ventevaporator coil must drain separately as shown.

Drain

FIGURE 40

CAUTION

A separate drain line must be run to the drain from the condensate trap to ensure proper drainage and pressure switch operation. DO NOT connect the condensate trap drain into the drain line from the evaporator coil.

Page 26 of 48 Issue 1109 506725-01