Reznor CAUA User manual

Revision: CAUA-COND-DRAIN (03-22) 165012-A

BURNER CONDENSATE DRAIN KIT INSTALLATION FOR GAS-

FIRED INDOOR HEATER

Supersedes: CP-CAUA-DK (04-16) PN165012R5

MODEL CAUA WITH COOLING COIL

Table 1. Burner Condensate Drain Kit (PN 165951) Components

Item No. Component Description PN (Quantity)

1 Tubing (not shown) 3/8 ID × 6 feet 165955 (1)

2 Threaded ﬁtting 90-degree, 1/4 NPT × 3/8, nylon 165952 (1)

3 Brass nut 1/4 NPT 110628 (1)

4 Hex locknut 1/4, silver-colored (T&B #139) 171527 (1)

5 Washer Sealing 165953 (1)

6 Wire tie (not shown) Nylon (T&B #TY-24M) 20913 (2)

7 Snap bushing (not shown) Heyco #SB 625-8 87556 (1)

•When a cooling coil is installed on a model CAUA heater, a burner condensate drain line must be installed. The

burner condensate drain kit (PN 165951) includes all of the parts needed to install the drain line.

•Refer to the installation manual provided with the heater for important safety information.

•Ensure that all components shown in Figure 1 and listed in Table 1 are available before beginning installation.

INSTALLATION

Install the burner condensate drain as follows. Item numbers in parentheses refer to Figure 1.

1. If unit is installed, turn OFF gas and electric power and allow unit to cool.

2. Remove burner compartment door.

NOTE: Depending on the date of manufacture, the burner box cover is in either two sections—top

left and top right extending over the front—or in three sections—top left, top right, and a separate

front cover.

Figure 1. Burner Box with Cover Removed (Refer to Table 1)

Speciﬁcations and illustrations subject to change without notice or incurring obligations.

Latest version of this manual is available at www.reznorhvac.com.

CAUA-COND-DRAIN (03-22) 165012-A

INSTALLATION—CONTINUED

3. Remove burner box cover:

a. If front burner cover IS NOT separate piece, disconnect ﬂame sensor wire and ﬂame rollout switch wires on

left side of burner box cover, disconnect silicone tubing from static tap, and remove top left cover.

b. If front of burner cover IS separate piece, remove front section only.

4. On side of cabinet that is most convenient for drain line, locate and remove hole plug in cabinet and insert snap

bushing (7).

5. Assemble brass nut (3), sealing washer (5), and threaded ﬁtting (2) as shown in Figure 1.

6. Remove plug from hole in bottom center of burner pan and install threaded ﬁtting (2) up through hole so that hose

barb is toward bushing in side of cabinet. Secure ﬁting using hex locknut (4).

7. Under burner, install tubing (1) onto hose barb on threaded ﬁtting (2). Ensure that tubing is secure.

8. Extend tubing (1) out through cabinet side, maintaining downward slope. Just outside of cabinet, make loop in

hose to create trap. Secure loop using wire ties (6).

9. Continue downward with tubing and connect it into coil drain pipe.

10. Install burner box cover removed in step 3 and burner compartment door removed in step 2.

11. If unit is installed, start up unit in accordance with instructions in installation provided with unit and check for

proper operation.

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