beautypg.com

Horizontal installations, Horizontal left installations, Horizontal right installations – Reznor B6BM Unit Installation Manual User Manual

Page 7

background image

7

Horizontal Installations

The B6 Series air handler can be installed horizontally in

an attic, basement, crawl space or alcove. It can also be

suspended from a ceiling in a basement or utility room in

either a right to left airflow or left to right airflow as shown
in

Figure 3

. Air handlers may or may not be shipped from

the factory with all the parts required for horizontal left

applications and horizontal right applications. If your unit

does not have parts for a horizontal application, a kit may

be available.
NOTE: In all horizontal applications in which the unit is

installed above a finished ceiling and/or living space, a

secondary drain pan must be installed under the entire unit

to avoid damage to the ceiling in the event of condensate

overflow. Additionally, it is recommended that an approved

water level indicator or float switch device be used to

shut down the unit in the event water is detected in the

auxiliary drain pan.
If suspending the air handler from the ceiling, assemble
a support frame (

Figure 4

) using slotted iron channel and

full threaded rod. Fasten the frame together with nuts,

washers, and lockwashers. Secure the support frame

to the rafters with lag bolts. The air handler can also be

suspended using steel straps around each end of the

unit. The straps should be attached to the air handler with

sheet metal screws and to the rafters with bolts.
Horizontal Left Installations:

1. Remove the coil access door.

2. Remove the plug from one of the threaded holes in the

horizontal drain pan. Completely remove the webbing

located in the threaded holes of the horizontal drain

pan.

IMPORTANT: If the webbing is not removed,

the condensate will not drain properly and ceiling

damage may occur.

3. Insert the plug (from horizontal drain pan) into the open

and unused drain hole in the drain pan at the bottom

of the unit to block bypass air.

4. Remove the corresponding drain line knockout from

the coil access door to allow access to the horizontal

drain.

5. Replace the door and attach the drain line.
Horizontal Right Installations:

1. Remove the coil access door. Unscrew the line-set tube

close-off plate from the front left cabinet rail.

2. Slide the coil and drain pan assembly out of the unit.

3. Remove the sheet metal hairpin covers (if supplied)

from the back of the coil and discard.

4. Place the horizontal drain pan on the opposite side of

the coil. On units with 2 sets of knockouts, remove the

other set of knockouts in the coil spacing plates and

insert support rod.

5. Slide the coil and the horizontal drain pan assembly

back into the unit. Re-attach the tube close off plate.

NOTE: For A-size cabinet applications, it may be

preferrable to remove the blower assembly prior

to installing the coil & drainpan. In this case follow

instructions 1-4 as listed above but also remove the

blower access door and blower assembly. The blower

assembly is secured with two screws on either side

near the front. With these removed the blower assembly

can slide out of the front of the unit. Install the coil and

drain pan as described in step 5 and then replace the

blower assembly. Take care to ensure that the flanges

on the sides of the blower assembly are captured by

the pockets in the blower deck. It may be necessary to

lift the blower assembly during insertion to allow the

lower blower leg to clear the side of the drain pan. The

blower will stop against the back of the blower deck.

Replace the two screws and the blower access door

and procede with steps 6-9.

6. Remove the plug from one of the threaded holes

in the horizontal drain pan. Completely remove the

webbing located in the threaded holes of the drain

pan.

IMPORTANT: If the webbing is not removed,

the condensate will not drain properly and ceiling

damage may occur.

NOTE: It is recommended that the suction line be

insulated up to the coil inside of the cabinet.

Threaded

Rod

Lag
Bolt

Nuts (x2)

Washer

and

Lockwasher

Nuts (x2)

Figure 4. Unit Horizontally Suspended

Figure 3. Horizontal Configurations

HORIZONTAL RIGHT

HORIZONTAL LEFT

RETURN

AIR

RETURN

AIR