Step 7 - Convert To Horizontal And Connect; Ductwork; Step 8 - Install Outside Air Hood - Carrier WeatherMaster 50HC14 Installation Instructions Manual

Step 7 — Convert to Horizontal and Connect
Ductwork (When Required)
Unit is shipped in the vertical duct configuration. Unit
without factory-installed economizer or return air smoke de-
tector option may be field-converted to horizontal ducted
configuration. To convert to horizontal configuration, remove
screws from side duct opening covers (see Fig. 9) and remove
covers. Use the screws to install the covers on vertical duct
openings with the insulation-side down. The panels must be
inserted into the notches on the basepan to properly seal. The
notches are covered by the tape used to secure the insulation
to the basepan and are not easily seen. See Fig. 10 for posi-
tion of the notches in the basepan. Seals around duct openings
must be tight. Secure with screws as shown in Fig. 11. Cover
seams with foil duct tape.
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
Fig. 9 — Horizontal Conversion Panels
NOTCHES
BASEPAN
Fig. 10 — Location of Notches
Field-supplied flanges should be attached to horizontal
duct openings and all ductwork should be secured to the
flanges. Insulate and weatherproof all external ductwork,
joints, and roof or building openings with counter flashing
and mastic in accordance with applicable codes.
Do not cover or obscure visibility to the unit's informative
data plate when insulating horizontal ductwork.
NOTCHES
Step 8 — Install Outside Air Hood
ECONOMIZER HOOD REMOVAL AND SETUP
FACTORY OPTION
1. The hood is shipped in knock-down form and located in
the return air compartment. It is attached to the econo-
mizer using two plastic tie-wraps.
2. To gain access to the hood, remove the filter access
panel. (See Fig. 12.)
3. Locate and cut the two plastic tie-wraps, being careful to
not damage any wiring. (See Fig. 13.)
4. Carefully lift the hood assembly through the filter access
opening and assemble per the steps outlined in Econo-
mizer Hood and Two-Position Hood on page 12.
11
SCREWS
BASEPAN
Fig. 11 — Horizontal Duct Panels In Place
DUCT COVERS
SHEET METAL
FACE UP
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