Carrier 48FC 04, Руководство по установке, Страница: 12 / 48

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Fig. 12 — 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. 12 and 13. Secure hood divider with 2 screws on each
hood side. The hood divider is also used as the bottom fil-
ter 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. 13.
6. Caulk the ends of the joint between the unit top panel and
the hood top.
7. Replace the filter access panel.
Fig. 13 — Economizer Filter Installation
Step 9 — Units with Hinged Panels Only
If the unit does not have hinged panels, skip this step and con-
tinue at Step 10 below.
Relocate latch shipped inside the compressor compartment be-
hind the hinged compressor door to location shown in Fig. 14
after unit installation.
Fig. 14 — 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. 15.
Fig. 15 — Flue Hood Details
Step 11 — Install Gas Piping
Installation of the gas piping must be accordance with local
building codes and with applicable national codes. In U.S.A., re-
fer 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 fuel at
elevations up to 2000 ft (610 m) above sea level. Unit may be
field converted for operation at elevations above 2000 ft
(610 m) and/or for use with liquefied petroleum fuel. See ac-
cessory kit installation instructions regarding these accessories.
Furnace gas input rate on rating plate is for installation up to
2000 ft (610 m) above sea level. The input rating for altitudes
above 2000 ft (610 m) must be derated by 4% for each 1000 ft
(305 m) above sea level.
For natural gas applications, gas pressure at unit gas connec-
tion must not be less than 4 in. wg (996 Pa) or greater than
13 in. wg (3240 Pa) while the unit is operating. On 48FCF/
T*05-07 (high-heat) units, the gas pressure at unit gas connec-
tion must not be less than 5 in. wg (1245 Pa) or greater than
13 in. wg (3240 Pa) while the unit is operating, see Table 3. For
liquefied petroleum applications, the gas pressure must not be
less than 11 in. wg (2740 Pa) or greater than 13 in. wg
(3240 Pa) at the unit connection, see Table 4.
B
TOP
PANEL
INDOOR COIL
ACCESS PANEL
19 1/16”
SCREW
HOOD DIVIDER
LEFT
HOOD
SIDE
33 3/8”
(848mm)
(483mm)
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER
FILTER
HOOD
FILTER
CLIP
OUTSIDE
AIR
COMPRESSOR DOOR OUTDOOR COIL
LATCH
BLOWER
ACCESS
PANEL
FLUE OPENING