Installation Manual

ManualsBrandsOxbox ManualsFurnaces25% Manual Fresh Air Kit

BX-SVN-JAYOSAH001-1A-EN 3

Installer's Guide

VERTICAL RETURN DUCT APPLICATION

In this application the return duct cover supplied with the

unit should be discarded. The vertical return air opening

in the unit should be uncovered.

1. Set the unit in place on optional roofcurb or other

support. Install duct per instruction provided with

unit.

2. Install provided 1/8” gasket on mating flanges of

manual outside air panel.

3. Install the manual outside air panel over the

horizontal return opening in the unit. See Figure 2.

4. Screw panel to unit through pre-punched holes in

panel and unit using (4) #10 self-drilling screws

provided.

5. Install provided 1/8” thick gasket on 3 perimeter

mating flanges on hood.

6. Set hood over screen in panel, align holes and

screws hood to panel using provided #10 selfdrilling

screws. See Figure 2.

7. Set damper position in hood using spring latch to

meet outside air requirements. See Figure 1.

Figure 2. Vertical installation

Panel

with Screen

Filter access panel

(For unit mounted

filter accessory)

Hood with

Damper

Roofcurb

HORIZONTAL RETURN DUCT APPLICATION

In this application the return duct cover supplied with the

unit should be installed on the base of the unit covering

the bottom return opening. The horizontal return air duct

opening should be uncovered.

1. Install field provided horizontal return air duct onto

the unit. See Figure 3. Follow unit instructions for

duct sizing.

2. Snip out the screen from the manual outside air

panel.

3. Cut a 7” x 7” opening in the side of the field provided

duct. See Figure 3.

Figure 3. Horizontal installation - Cutout

7” x 7” cutout

in return duct

Field pro

vided

retur

n duct

Screen trimmed from

manual outside air panel

4. Screw the screen from step 2 over the 7” x 7” cutout

in return duct with provided #10 self-drilling screws.

Install provided 1/8” thick gasket on 3 perimeter

mating flanges on hood.

5. Install provided 1/8” thick gasket on 3 perimeter

mating flanges on hood.

6. Set hood over screen in panel, align holes and

screws hood to panel using provided #10 selfdrilling

screws. See Figure 4.

Figure 4. Horizontal installation - Hood

Screen cutout

Field pro

vided

retur

n duct

Manual outside

air hood

7. Set damper position in hood using spring latch to

meet outside air requirements. See Figure 1.

TwentyThreeC, LLC

800 Beaty Street,

Davidson, NC 28036

www.oxboxhvac.com

For more information contact

your local dealer (distributor).

Since the manufacturer has a policy of continuous product and product data

improvement, it reserves the right to change the design and specification

without notice.