Reznor CAUA Unit Installation Manual Manual do Utilizador descarregar pdf (Página 26)

Form I-CAUA, P/N 164771 R8, Page 26

6.3.2 Outside Air and

Return Air Mixing Box,

Option GA

6.0 Mechanical

(cont'd)

6.3 Inlet Air (cont'd)

6.3.1 Filter Cabinet, Option CW (cont'd)

The optional mixing box for the Reznor

Model CAUA heater is designed to provide the

system with a supply air mixture of return air and outside air. Any percentage of out-

side air can be supplied to a standard unit as long as the air temperature entering the

blower is 35°F or above. Only a unit equipped with factory-installed makeup air Option

AD4 is permitted to operate with entering air below 35°F.

The mixing box is available in an assortment of congurations with a selection of actua-

tors and controls. All mixing boxes are completely assembled at the factory for eld

attachment to the rear of a Model CAUA heater.

Follow the instructions packed with the mixing box to cut out the opening and attach

the mixing box. If the mixing box has dampers, follow the instructions for routing the

damper motor wires, and connect the wires according to the wiring diagram. If there

are both return air and outside air dampers, follow the directions to adjust the damper

linkage.

All mixing box inlet air openings have duct anges for attachment of ductwork. Duct-

work must be attached to the outside air opening. Removable door panels provide for

lter access from either end of the cabinet. If the mixing box was ordered with optional

lters, it is shipped with the lters installed.

FIGURE 19D - Bottom Filter Cabinet

Option CW13 with 2" Disposable Filters

Option CW14 with 2" Pleated Filters

Option CW15 with 2" Permanent Filters

Option CW16 for Field-Supplied Filters

• Adds 18" (457mm) to height of the heater

• Shipped factory assembled for eld installation

• "V" Filter Rack Arrangement

TABLE 19 - Sizes of Disposable, Permanent or Pleated

2" Filters for Options CW13, CW14, CW15, or CW16

Size CFM FPM Filters

150

1800 281 (6) 16 x 16

2400 375 (6) 16 x 16

3000 469 (6) 16 x 16

200

2400 375 (6) 16 x 16

3000 469 (6) 16 x 16

250

3000 313 (8) 16 x 16

4000 417 (8) 16 x 16

5000 521 (8) 16 x 16

300

3000 313 (8) 16 x 16

4000 417 (8) 16 x 16

5000 521 (8) 16 x 16

350

4300 448 (12) 16 x 16

5000 521 (12) 16 x 16

*6000 625 (12) 16 x 16

400

4300 448 (12) 16 x 16

5000 521 (12) 16 x 16

*6000 625 (12) 16 x 16

Congurations/Accessories

Before installing, check to be sure that the conguration of the mixing box matches

the order and that any accessories ordered are part of the cabinet. Factory-installed

optional accessories could include a damper motor, potentiometer, return air controller,

mixed air controller, and/or lters. NOTE: If the potentiometer is to be eld-installed, it

is shipped in a separate carton.

Mixing Box

Congurations

by Option Code

Option Mixing Box Conguration

GA1 Top Outside Air Opening with Dampers/Rear or Bottom Return Air Opening without Dampers

GA2 Rear Outside Air Opening with Dampers/Top or Bottom Return Air Opening without Dampers

GA3 Bottom Outside Air Opening with Dampers/Top or Rear Return Air Opening without Dampers

GA4 Bottom Outside Air Opening with Dampers/Rear Return Air Opening with Dampers

GA5 Bottom Outside Air Opening with Dampers/Top Return Air Opening with Dampers

GA6 Rear Outside Air Opening with Dampers/Top Return Air Opening with Dampers

GA7 Rear Outside Air Opening with Dampers/Bottom Return Air Opening with Dampers

GA8 Top Outside Air Opening with Dampers/Rear Return Air Opening with Dampers

GA9 Top Outside Air Opening with Dampers/Bottom Return Air Opening with Dampers

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 ... 43 44

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