Reznor RXH (Outdoor PreevA) Unit Installation Manual - Manual (Page 14)

Form I-RDH/REH/RHH/RXH (12-14), Page 14
Roof Curb Assembly
and Installation
Instructions
(See layout in FIGURE 8 and
illustrations in FIGURE 9.)
FIGURE 9 - Roof Curb Assembly
Unit
Bottom
MUST be sealed between
curb cap and roof curb
Unit
Base
Wood Nailer
Insulation
6-1/4”
(159mm)
Counter Flashing
(by installer)
Roofing Felts and Cant
Strip (by installer)
Weld, bolt or lag screw
curb to deck structure.
16”
(406mm)
1-7/8”(48mm)
4”
(102mm)
2 x 6 Wood
Nailer
1-1/2 x 3 lb
Fiberglass
Flashed by the
installer (flashing
must be under
lip of curb)
Lag Screw
and Washer
Cap
Screws
Curb and Curb Cap Detail
Curb Section
Corner Detail
5.0 Mounting and
Lifting (cont’d) 5.2.3 Mounting on a Roof Curb (cont’d)
5.2 Mounting (cont’d)
TABLE 9A - Dimensions and Weights of Optional Roof Curbs for Model RHH (See FIGURE 8, pg 12.)
Configuration*
Option
Code
RHH
Inches (±1/8) mm (±3) Weight
A B C D A B C D lbs kg
Model RHH and horizontal discharge CJ8Q
130/180 77-1/2 29-13/16 73-3/4 26-1/16 1,969 757 1,873 662
260 77-1/2 46-1/16 73-3/4 42-5/16 1,969 1,170 1,873 1,075
350 77-1/2 54-1/16 73-3/4 50-5/16 1,969 1,373 1,873 1,278
Model RHH PLUS 1 either Downturn Discharge Plenum
(AQ5 or AQ8); OR Mixing Box (MXB1) with horizontal
discharge; OR Cooling Coil Cabinet without Reheat (AU5
or AU6) with horizontal discharge
CJ8R
130/180 105-1/4 29-13/16 101-1/2 26-1/16 2,673 757 2,578 662
260 105-1/4 46-1/16 101-1/2 42-5/16 2,673 1,170 2,578 1,075
350 105-1/4 54-1/16 101-1/2 50-5/16 2,673 1,373 2,578 1,278
Model RHH PLUS 2 - Down Discharge (AQ 5 or AQ8) AND
Mixing Box OR Cooling Coil Cabinet without Reheat (AU
5 or 6); OR Mixing Box AND Cooling Coil Cabinet without
Reheat (AU 5 or 6) with horizontal discharge
CJ8S
130/180 133 29-13/16 129-1/4 26-1/16 3,378 757 3,283 662
260 133 46-1/16 129-1/4 42-5/16 3,378 1,170 3,283 1,075
350 133 54-1/16 129-1/4 50-5/16 3,378 1,373 3,283 1,278
Model RHH PLUS 3 - Down Discharge Plenum (AQ5 or
AQ8) AND Mixing Box (MXB1) AND Cooling Coil Cabinet
without Reheat (AU5 or AU6)
CJ8T
130/180 160-3/4 29-13/16 157 26-1/16 4,083 757 3,988 662
260 160-3/4 46-1/16 157 42-5/16 4,083 1,170 3,988 1,075
350 160-3/4 54-1/16 157 50-5/16 4,083 1,373 3,988 1,278
Model RHH PLUS 1 - Cooling Coil Cabinet with Reheat
(AU7) with horizontal discharge
CJ8U
130/180 130-1/4 29-13/16 126-1/2 26-1/16 3,308 757 3,213 662
260 130-1/4 46-1/16 126-1/2 42-5/16 3,308 1,170 3,213 1,075
350 130-1/4 54-1/16 126-1/2 50-5/16 3,308 1,373 3,213 1,278
Model RHH PLUS 2 - Cooling Coil Cabinet with Reheat
(AU7) AND Down Discharge Plenum (AQ5 or AQ8) OR
Mixing Box (MXB1) with horizontal discharge
CJ8V
130/180 158 29-13/16 154-1/4 26-1/16 4,013 757 3,918 662
260 158 46-1/16 154-1/4 42-5/16 4,013 1,170 3,918 1,075
350 158 54-1/16 154-1/4 50-5/16 4,013 1,373 3,918 1,278
Model RHH PLUS 3 - Cooling Coil Cabinet with Reheat
(AU7) AND Down Discharge Plenum (AQ5 or AQ8) AND
Mixing Box (MXB1)
CJ8W
130/180 185-3/4 29-13/16 182 26-1/16 4,718 757 4,623 662
260 185-3/4 46-1/16 182 42-5/16 4,718 1,170 4,623 1,075
350 185-3/4 54-1/16 182 50-5/16 4,718 1,373 4,623 1,278
TABLE 9B - Dimensions for Locations
of Bottom Duct Connections as shown
in FIGURE 8 for Model RHH
Important NOTE: To ensure proper operation of a
Model RHH, the opening through the roof must be
the same area as the inside dimension of the roof
curb. Inside area of the roof curb under a Model
RHH must be open.
Model
RHH
Duct Location Dimensions (inches ±1/8) Duct Location Dimensions (mm ±3)
F H K (w/mixing box & downturn) F H K (w/mixing box & downturn)
(with mixing box
and/or down
discharge)
no
cooling
coil
module
with a cooling coil
module
(with mixing
box and/
or down
discharge)
no
cooling
coil
module
with a cooling coil
module
no
reheat
with
reheat
no
reheat
with
reheat
130/180 22-7/8 1-9/16 107-3/8 135-1/8 160-1/8 581 40 2727 3432 4067
260 34-3/4 3-3/4 107-3/8 135-1/8 160-1/8 883 96 2727 3432 4067
350 45-13/16 2-1/4 107-3/8 135-1/8 160-1/8 1164 57 2727 3432 4067
Curbs are shipped unassembled. Field assembly and mounting on the roof are the
responsibility of the installer. All hardware necessary to assemble the curb is supplied.
Additional installation hardware must be field supplied.
IMPORTANT: Before installing roof curb, verify that the size is correct for the
system being installed.
* See Configurations in Paragraph 4.2. NOTE: If there is an evaporative cooling module, the base of the unit under the evaporative cooling
module extends beyond the end of the roof curb. An evaporative cooling module does not affect the length of the roof curb.