Positioning On Curb - Carrier WeatherExpert Puron 50LC 08 Series Installation Instructions Manual

"B"
MAX WEIGHT
UNIT
LB
2280
50LC*008
2285
50LC*009
2285
50LC*012
NOTES:
1. Dimensions in ( ) are in millimeters.
2. Hook rigging shackles through holes in base rail, as shown in detail "A." Holes in base rails are centered around the unit center of gravity.
3. Use wooden top to prevent rigging straps from damaging unit.

POSITIONING ON CURB

For full perimeter curbs CRRFCURB074A00 and 075A00, the
clearance between the roof curb and the front and rear base rails
should be / -in. (6.4 mm). The clearance between the curb and the
1
4
end base rails should be / -in. (13 mm). For retrofit applications
1
2
with curbs CRRFCURB003A01 and 4A01, the unit should be po-
sitioned as shown in Fig. 8. Maintain the 15
8 / -in. (220 mm) clearances and allow the 22
5
8
dimension to float if necessary.
If the alternative condensate drain location through the bottom of
the unit is used in conjunction with a retrofit curb, the hole in the
curb must be moved 12 / -in. (320 mm) towards the end of the
1
2
unit. See Fig. 9.
Although unit is weatherproof, guard against water from higher
level runoff and overhangs.
Fig. 8 — Retrofit Installation Dimensions
ORIGINAL
POSITION
Fig. 9 — Alternative Condensate Drain Hole Positions
PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING
UNIT ON ROOF CURB.
914 - 1371
( 36" - 54" )
"C"
"A"
SEE DETAIL "A"
A
KG IN
1034 116
1037 116
1037 116
Fig. 7 — Rigging Details
/ -in. (394 mm) and
1
2
/ -in. (567 mm)
5
16
NEW POSITION
(MOVED 12.5 IN.)
DUCT END
DIMENSIONS
B
MM IN
2945 63
2945 58
2945 58
IMPORTANT: If the unit has the factory-installed Thru-the-Base
option, make sure to complete installation of the option before
placing the unit on the roof curb.
See the following section:
• Factory-Option Thru-Base Connections on page 28
NOTE: If electrical connection is not going to occur at this time,
tape or otherwise cover the fittings so that moisture does not get
into the building or conduit in the interim.
Remove all shipping materials and top skid. Remove extra center
post from the condenser end of the unit so that the condenser end
of the unit matches Fig. 20-22. Recycle or dispose of all shipping
materials.
Step 7 — Convert to Horizontal and Connect
Ductwork (when required)
Unit is shipped in the vertical duct configuration. Unit without fac-
tory-installed economizer or return-air smoke detector option may
be field-converted to horizontal ducted configuration using acces-
sory CRDUCTCV002A00. To convert to horizontal configura-
tion, remove screws from side duct opening covers (see Fig. 10)
and remove covers. Discard the supply duct cover. Install accesso-
ry CRDUCTCV002A00 to cover the vertical supply duct opening.
Use the return duct cover removed from the unit end panel to cov-
er the vertical return duct opening. 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. 11
for position of the notches in the basepan. Seals around duct open-
ings must be tight. Secure with screws as shown in Fig. 12. Cover
seams with foil duct tape.
Field-supplied flanges should be attached to horizontal duct open-
ings and all ductwork should be secured to the flanges. Insulate
and weatherproof all external ductwork, joints, and roof or build-
ing 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.
12
DETAIL "A"
C
MM IN
1600 59.5
1473 59.5
1473 59.5
MM
1510
1510
1510