Step 9 - Units With Hinged Panels Only; Step 10 - Install Flue Hood; Step 11 - Install Gas Piping - Carrier WeatherExpert 48LC 04 Series Installation Instructions Manual

Single package rooftop gas heating/electric cooling unit with puron (r-410a) refrigerant
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INDOOR
COIL
ACCESS
PANEL
Fig. 15 — Indoor Coil Access Panel Relocation
2.
Swing out indoor coil access panel and insert the hood
sides under the panel (hood top). Use the screws provided
to attach the hood sides to the hood top. Use screws pro-
vided to attach the hood sides to the unit. See Fig. 16.
LEFT
HOOD
SIDE
19 1/16"
B
(483mm)
HOOD DIVIDER
Fig. 16 — Economizer Hood Construction
3.
Remove the shipping tape holding the economizer baro-
metric relief damper in place (economizer only).
4.
Insert the hood divider between the hood sides. See
Fig. 16 and Fig. 17. Secure hood divider with 2 screws on
each hood side. The hood divider is also used as the bot-
tom filter rack for the aluminum filter.
5.
Open the filter clips which are located underneath the
hood top. Insert the aluminum filter into the bottom filter
rack (hood divider). Push the filter into position past the
open filter clips. Close the filter clips to lock the filter into
place. See Fig. 17.
6.
Caulk the ends of the joint between the unit top panel and
the hood top.
7.
Replace the filter access panel.
TOP
PANEL
TOP
PANEL
CAULK
HERE
INDOOR
COIL
ACCESS
PANEL
TOP
PANEL
INDOOR COIL
ACCESS PANEL
SCREW
33 3/8"
(848mm)
DIVIDER
BAROMETRIC
RELIEF
Fig. 17 — Economizer Filter Installation
Step 9 — Units with Hinged Panels Only
Relocate latch shipped inside the hinged compressor door to
location shown in Fig. 18 after unit installation. If the unit does
not have hinged panels, skip Step 9 and continue at Step 10.
Fig. 18 — Compressor Door Latch Location
Step 10 — Install Flue Hood
Flue hood is shipped screwed to the basepan beside the burner
compartment access panel. Remove from shipping location and
using screws provided, install flue hood and screen in location
shown in Fig. 19.
Fig. 19 — Flue Hood Details
Step 11 — 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 (NF-
GC). In Canada, installation must be in accordance with the
CAN/CSA B149.1 and CAN/CSA B149.2 installation codes
for gas burning appliances.
14
OUTSIDE
AIR
HOOD
CLEANABLE
ALUMINUM
FILTER
FILTER
FILTER
CLIP
BLOWER
ACCESS
PANEL

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