Step 8 - Install Outside Air Hood; Setup (Factory Option); Economizer Hood - Carrier WeatherMaster 50GC 04-06 Series Installation Instructions Manual

Step 8 — Install Outside Air Hood
ECONOMIZER HOOD

SETUP (FACTORY OPTION)

NOTE: Economizer is not available as factory-installed options
for single phase (-3 voltage code) models.
The hood is shipped in knock-down form and must be field as-
sembled. The indoor coil access panel is used as the hood top
while the hood sides, divider and filter are packaged together, at-
tached to a metal support tray using plastic stretch wrap, and
shipped in the return air compartment behind the indoor coil ac-
cess panel. The hood assembly's metal tray is attached to the base-
pan and also attached to the damper using two plastic tie-wraps.
1. To gain access to the hood, remove the filter access panel. See
Fig. 9.
FILTER ACCESS PANEL
Fig. 9 — Typical Access Panel Locations
2. Locate the (2) screws holding the metal tray to the basepan
and remove. Locate and cut the (2) plastic tie-wraps securing
the assembly to the damper. See Fig. 10. Avoid damaging any
wiring or cutting tie-wraps securing any wiring.
Fig. 10 — Economizer Hood Parts Location
3. Carefully lift the hood assembly (with metal tray) through the
filter access opening and assemble per the steps outlined in
the following section, "Economizer Hood".

ECONOMIZER HOOD

NOTE: If the power exhaust accessory is to be installed on the
unit, the hood shipped with the unit will not be used and must be
discarded. Save the aluminum filter for use in the power exhaust
hood assembly.
PACKAGE REMOVAL AND
COMPRESSOR
ACCESS PANEL
OUTDOOR-AIR OPENING AND
INDOOR COIL ACCESS PANEL
HOOD PARTS
PLASTIC TIE WRAP
QTY (2)
SCREWS FOR
METAL TRAY
QTY (2)
1. The indoor coil access panel will be used as the top of the
hood. Remove the screws along the sides and bottom of the
indoor coil access panel. See Fig. 11.
INDOOR
COIL
ACCESS
PANEL
Fig. 11 — 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 provided to attach
the hood sides to the unit. See Fig. 12.
LEFT
HOOD
SIDE
19 1/16" B
(483mm)
Fig. 12 — Economizer Hood Construction
3. Remove the shipping tape holding the economizer barometric
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 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. 13.
6. Caulk the ends of the joint between the unit top panel and the
hood top.
7. Replace the filter access panel.
11
TOP
PANEL
TOP
PANEL
CAULK
HERE
INDOOR
COIL
ACCESS
PANEL
TOP
PANEL
INDOOR COIL
ACCESS PANEL
SCREW
33 3/8"
(848mm)
HOOD DIVIDER