Step 10 - Economizer - Horizontal Airflow Units; Step 11 - Install Flue Hood And Combustion Air; Hood; Step 12 - Install Gas Piping - Carrier WeatherExpert 48LC B14 Series Installation Instructions Manual

APPLY SEAL STRIP
TO THE BACK
OF THIS FLANGE
APPLY SEAL STRIP
TO THE BACK
OF THIS FLANGE
3
6
5
8
2
ITEM # DESCRIPTION
Filter Supports
1
Central Retainer
2
Hood Top
3
Left Hood Side
4
Right Hood Side
5
Side Retainer
6
Top Diverters
7
Deflector
8
Fig. 27 — Hood Part Identification and Seal Strip
Application Areas
1. INSERT
AIR SCREEN
Fig. 28 — Outdoor Air Screen Installation
Fig. 29 — Completed Hood Assembly
APPLY SEAL STRIP
TO THE BACK
OF THIS FLANGE
7
7
2
8
8
2
APPLY SEAL STRIP
1
TO THE FRONT OF
THIS FLANGE
QTY
3
3
1
1
1
2
2
3
2. SLIDE
INTO
POSITION
Step 10 — Economizer - Horizontal Airflow Units
The barometric relief damper ships attached to the exterior re-
turn opening panel on the unit (see Fig. 30). Remove shipping
cover to access the barometric relief damper, rain angle, and
parts bag. These items are to be repositioned on the side of the
field supplied ductwork. In addition, the barometric relief hood
should be used and can be ordered separately (PN: CRBAR-
6
HOD001A00) or can be field supplied.
BAROMETRIC
RELIEF
DAMPER
4
SHIPPING
COVER
Fig. 30 — Barometric Relief Damper
Step 11 — Install Flue Hood and Combustion Air

Hood

The flue hood is shipped screwed to the fan deck inside the burner
compartment. Remove the burner access panel and then remove
the flue hood from its shipping location. Using the screws provid-
ed, install flue hood in the location shown in Fig. 31.
The combustion air hood is attached to the back of the burner ac-
cess panel. Remove the two screws securing the hood to the back
of the burner access panel. Using the two screws, re-attach the
hood to the front of the burner access panel as shown in Fig. 31.
COMBUSTION
AIR HOOD
Fig. 31 — Flue Hood and Combustion Air Hood
Step 12 — Install Gas Piping
Installation of the gas piping must be in accordance with local
building codes and with applicable national codes. In U.S.A., refer
to NFPA 54/ANSI Z223.1 National Fuel Gas Code (NFGC). In
Canada, installation must be accordance with the CAN/CSA
B149.1 and CAN/CSA B149.2 installation codes for gas burning
appliances. This unit is factory equipped for use with natural gas
(NG) fuel at elevations up to 2000 ft (610 m) above sea level. Unit
may be field converted for operation at elevations above 2000 ft
26
(Shipping Location)
FLUE HOOD
Details
RAIN ANGLE
RETURN
OPENING
PANEL