516 01 3604 04
Specifications subject to change without notice.
11
Fig. 8 — Rigging Details
POSITIONING ON CURB
For full perimeter curbs CRRFCURB072A00 and 073A00,
the clearance between the roof curb and the front and rear
base rails should be
1
/
4
-
in. (6.4 mm). The clearance be
-
tween the curb and the end base rails should be
1
/
2
-
in.
(13 mm). For retrofit applications with curbs CRRF
-
CURB003A01 and 4A01, the unit should be position as
shown in Fig. 9. Maintain the 15
1
/
2
-in. (394 mm) and 8
5
/
8
-in.
(220 mm) clearances and allow the 22
5
/
16
-in. (567 mm) di
-
mension to float if necessary.
Fig. 9 — Retrofit Installation Dimensions
If the alternative condensate drain location through the bot
-
tom of the unit is used in conjunction with a retrofit curb, the
hole in the curb must be moved 12
1
/
2
in. (320 mm) towards
the end of the unit.
Although unit is weatherproof, guard against water from
higher level runoff and overhangs.
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. 21-23. 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
factory-installed economizer or return-air smoke detector
option may be field-converted to horizontal ducted configu
-
ration using accessory CRDUCTCV001A00. To convert to
horizontal configuration, remove screws from side duct
opening covers (see Fig. 10) and remove covers. Discard
the
supply
duct
cover.
Install
accessory
CRDUCTCV001A00 to cover the vertical supply duct open
-
ing. Use the return duct cover removed from the unit end
panel to cover 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 openings
must be tight. Secure with screws as shown in Fig. 12. Cov
-
er seams with foil duct tape.
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.
Fig. 10 — Horizontal Conversion Panels
NOTES:
1. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.
2. Dimensions in ( ) are in millimeters.
3. 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. Use wooden top to prevent rigging straps from damaging unit.
UNIT
MAX WEIGHT
DIMENSIONS
A
B
C
lb
kg
in.
mm
in.
mm
in.
mm
RHH120
2075
943
116.0
2945
58.5
1485
59.5
1510
DETAIL “A”
SEE DETAIL “A”
(914 - 1371)
36” - 54”
“B”
“A”
“C”
PLACE ALL GASKET IN PLACE BEFORE PLACING
UNIT ON ROOF CURB.
DUCT END
REMOVABLE HORIZONTAL
SUPPLY DUCT OPENING COVER
REMOVABLE HORIZONTAL
RETURN DUCT OPENING COVER
