Reznor CAUA Users Manual User Manual

Page 3

Form O-CAUA, P/N 164772 R7, Page 3

2.2.1 Blower and

Blower Motor

Remove dirt and grease from the motor and the blower. Use care when cleaning

to prevent causing misalignment or imbalance. If the unit is equipped with a belt drive,

check the belt for signs of wear. Replace if needed.

Check the belt tension. Proper belt tension is important to the long life of the

belt and motor. A loose belt will cause wear and slippage. Too much tension

will cause excessive motor and blower bearing wear. Adjust the belt tension

by turning the adjusting screw on the motor base until the belt can be depressed

3/4" (19mm). (See

FIGURE 1.) After correct tension is achieved, re-tighten the locknut

on the adjustment screw and recheck belt alignment.

FIGURE 1 - Check Belt

Tension

3/4

(19mm)

Code Reason for Maintenance

= Safety (to avoid personal injury and/or property damage)

= Continued Reliability

= Efficient Operation

2.2 Maintenance

Procedures

2.2.2 Filters

Check the filters quarterly. Clean or replace as needed. Replacement P/N's

for filters are listed here with application by size listed below.

2" Pleated Filters

2" Permanent Filters

2" Disposable Filters

16x16,

P/N 104109

16x16,

P/N 104103

(Btm Filter Cabinet only)

12x32,

P/N 114324

12x16,

P/N 114325

16x16,

P/N 104101

16x20,

P/N 101620

16x20,

P/N 101620

1" x 16" x 25" Filters for Inlet Base only (Size 350 and 400 only)

Disposable -

P/N 16447; Permanent - P/N 101609; Pleated - P/N 104107

(Applies to a heater

with either an optional

return air filter cabinet;

an outside air/return air

mixing box with filters;

or an inlet base with

filters.)

Sizes & Quantities of Filters Used in Return Air Filter Cabinet

To replace filters, select replacement P/N's from the list above for type and size of fil-

ters. If using field-replacement filters, replace with same size and type.

TABLE 1A -

Replacement Filters

for Return Air Filter

Cabinet

For

Full Size Filter Cabinet on

Either Side of the Heater

For

Small Filter Cabinet on

Either

Side or Rear of Heater

Size

Permanent or Pleated

150, 200, 250, 300

(4) 16x16 - 2" Filters

Size CFM FPM

2" Filters

350, 400

(6) 16x16 - 2" Filters

Pleated

Permanent

For

Full Size Filter Cabinet on Rear of Heater

150

1800 375 (2) 12x32

(4) 12x16

Size

Permanent or Pleated

2400 500 (2) 12x32

(4) 12x16

150, 200

(4) 16x16 - 2" Filters

*3000 625

(4) 12x16

250, 300, 350, 400

(6) 16x16 - 2" Filters

200 2400 500 (2) 12x32

(4) 12x16

For Filter Cabinet on

Bottom of Heater

*3000 625

(4) 12x16

Size

Permanent, Pleated, or

Disposable Filters

*Application requires 2" permanent; do not

use pleated filters.

150, 200

(6) 16x16 - 2" Filters

250, 300

(8) 16x16 - 2" Filters

350, 400

(12) 16x16 - 2" Filters

Sizes and Quantities of Filters (1" only) Used in the Optional Inlet Base

(Option AVA2 for Sizes 350 and 400 only)

Each base requires eight filters (or only six if one side is blocked off). Filters are 1" x

16" x 25"; P/N's for each type of filter are listed in the table above.

Sizes and Quantities of Filters (2" Permanent or 2" Pleated only) and

Blockoff Plates Used in the Optional Outside Air/Return Air Mixing Box

To replace filters, select replacement P/N's from the list on page 3 for type and size of

filters in

TABLE 1B. If using field-replacement filters, replace with same size and type.

TABLE 1B - Replacement Filter Quantity and Sizes for Mixing Box

Size

Filters - (Qty) Size

Filter Blockoff Plate

150, 200

(2) 16 x 16; (2) 16 x 20

(1) P/N 123226

250, 300, 350, 400

(6) 16 x 16

(1) P/N 114337

TABLE 1B -

Replacement Filters

and Blockoff Plates for

Mixing Box