Carrier 50DF034 - Manual (Page 2)

GASKET
RIGID INSULATION
(FIELD SUPPLIED)
NOTE' Certified dimension drawings available upon request
Fig. 2 — Roof Curb Dimensions
3-|"{ENDS OF UNIT)
CANT STRIP
(FIELD SUPPLIED)
ROOFING MATERIAL
(FIELD SUPPLIED)
Field-Fabricated Ductwork — Secure all ducts to
building structure. Use flexible duct connectors between
unit and ducts as required. Insulate and weatherproof
all external ductwork, joints and all roof openings with
flashing and mastic in accordance with applicable codes.
Insulate ducts passing through unconditioned spaces
and cover with a vapor barrier.
Maintain one-in. minimum clearance between supply
air duct and any combustible material for at least 3 ft of
duct run from unit.
Unit is shipped set up for through-the-bottom duct
connections. Ductwork openings are shown in Fig. 4.
Field-fabricated concentric ductwork may be connected
to units as shown in Fig. 5.
Modifications are required to convert unit for through-
the-side duct connections.
Do not use side duct connections on units with optional
power exhaust packages or accessory barometric relief
dampers.
To convert unit for through-the-side duct connection,
refer to Fig. 6 and perform the following procedure.
(Units without optional economizer);
1. Remove return air filter access panel.
2. Remove side air opening panels. Save sheet metal
screws.
3. Remove return air filters.
4. Remove slant baffle that separates bottom flow supply
and return air paths. Save screws.
5. Reinstall baffle on top of horizontal plenum deck
so that deck opening is covered. Face insulation side
of baffle down. Drill holes in horizontal plenum deck
using baffle holes as location guide Use sheet metal
screws removed in step 4 to secure baffle to deck.
6. Install side air opening panels in bottom air openings.
Face insulation side up Drill holes in unit basepan,
using panel holes as location guide. Use sheet metal
screws removed in step 2 to secure panels to basepan.
7. Reinstall return air filters. Be sure all relocated com­
ponents are secure.
8. Open manual outdoor air inlet hood as described
below.
Manual Damper Hood Adjustment — Loosen
hood adjustment bolts, pull hood open to desired setting.
Tighten bolts. See Fig. 4.