Reznor OPTIONS CD57 User manual

Revision: LDAP-CD57,58,59 (01-22) 208899-A
DOWNTURN NOZZLE KIT INSTALLATION FOR UNIT HEATERS
Supersedes: I-LDAP-N (05-14) PN208899R3
OPTIONS CD57, CD58, AND CD59 FOR MODEL LDAP
•Downturn nozzles are designed to direct the discharge air in a more vertical flow. A discharge nozzle may be
installed at each discharge air opening in any direction.
•Option CD57 provides 30-degree air deflection. Option CD58 provides 60-degree air deflection. Option CD59,
which includes four-way louvers, provides 30-degree air deflection that may vary with louver adjustment.
NOTE: Do not install four-way louvers with a 60-degree nozzle.
•Refer to the installation manual provided with the heater for important safety information.
•Ensure that all components listed in Table 1 are available before beginning installation.
Table 1. Nozzle Assembly Components
Component Description
Unit Size
400 800 1200
Option
CD57 CD58 CD59 CD57 CD58 CD59 CD57 CD58 CD59
Kit PN
208094 208097 208100 208886 208888 208890 208887 208889 208891
PN (Quantity)*
Nozzle
section
Right side 207932 207932
(2) 207932 207932 207932 (4) 207932 207932 207932 (6) 207932
Left side 207933 207933
(2) 207933 207933 207933 (4) 207933 207933 207933 (6) 207933
To p 207934 207934
(2) 207934 207934 207934 (4) 207934 207934 207934 (6) 207934
Bottom 207935 207935
(2) 207935 207935 207935 (4) 207935 207935 207935 (6) 207935
Filler Nozzle side 208747
(2)
208747
(4)
208747
(2)
208747
(4)
208747
(8)
208747
(4)
208747
(6)
208747
(12)
208747
(6)
Bag Hardware 208356 208357 208358 208356 208357 208358 208356 208357 208358
Screw**
Hex washer head, #8-18 ×
3/8, AB point, slotted indented
serrated
195638
(20)
195638
(46)
195638
(38)
195638
(20)
195638
(46)
195638
(38)
195638
(20)
195638
(46)
195638
(38)
#8 × 1/2, self-drilling, Teks 195249
(6)
195249
(12)
195249
(18)
195249
(6)
195249
(12)
195249
(18)
195249
(6)
195249
(12)
195249
(18)
Spring** Compression — 195046
(7) —195046 (7) —195046 (7)
Louver — 195578
(7) —195578 (14) —195578 (21)
Support Louver frame — 207937
(2) —207937 (4) —207937 (6)
Side Louver frame — 207936
(2) —207936 (4) —207936 (6)
*Quantity is one (1) for unit size 400, two (2) for unit size 800, or three (3) for unit size 1200 unless otherwise indicated.
**Included in each hardware bag.

2LDAP-CD57,58,59 (01-22) 208899-A
INSTALLATION
NOTE: Before installing a downturn nozzle, ensure that the installation location provides sufficient
clearance—in accordance with the installation/operation/maintenance manual provided with the
unit—for the nozzle option being installed.
Install the downturn nozzle kit as follows:
1. Assemble downturn nozzle assembly (see Figure 1, DETAIL A):
a. Secure both side sections to top section using 3/8-inch screws.
b. Secure both side sections to bottom section using 3/8-inch screws.
c. Install side fillers:
(1) For options CD57 and CD58, secure side fillers to both side sections using 3/8-inch screws.
(2) For options CD58 and CD59, assemble second nozzle without side fillers and connect both assembled
nozzles and using 3/8-inch screws (see Figure 1, DETAIL B).
(3) For option CD58, to install side fillers for second nozzle, position each side filler over seam between both
bottom nozzle sections, remove screws that align with holes in each side filler, and re-install screws to
secure each side filler over seam.
(4) For option CD59, do not attach side fillers for second nozzle—these will be installed in step 6b(3).
Figure 1. Nozzle Assembly
2. If heater is already installed, turn OFF gas and electric power. Allow time for louvers to cool before proceeding.
3. If horizontal louvers are already installed, remove each louver by pushing louver toward spring to release louver—
these will be re-installed in step 5.
4. Install assembled nozzle in heater outlet (see Figure 2):
NOTE: The discharge opening is square, so the nozzle can be installed in any direction.
a. Determine desired nozzle direction and position assembled nozzle in heater outlet so that holes on each side
align with holes in heater.
a. Secure nozzle sides to heater using 3/8-inch screws—ensure that screw ends are inside nozzle.
b. Install 1/2-inch self-drilling screws inside nozzle to secure nozzle top and bottom using existing holes in nozzle
top and bottom to position screws.
DETAIL A DETAIL B
BOTTOM
SIDE
TOP
SIDE
SIDE
FILLER
SIDE
FILLER
SIDE
FILLER
SECOND
NOZZLE
FIRST
NOZZLE

3
LDAP-CD57,58,59 (01-22) 208899-A
Figure 2. Nozzle Installation
NOTE: Before installing the louvers, note the louver curve and determine how the louvers should
be positioned to provide the optimal throw pattern. Depending on where the heater is installed
and on the desired airflow direction, the louvers may be installed with their curves all in the same
direction (either way) or the right half one way and the left the other.
5. Re-install horizontal louvers removed in step 3 in nozzle outlet:
NOTE: The wider side of the louver blade must always be facing out of the heater. Depending on
the desired throw pattern, the end of the louver with the spring can go either into the frame top
or bottom.
a. On notched end of louver, slide compression spring over tab.
b. With wider louver blade facing in toward heat exchanger, push tab with compression spring into hole in top
or bottom louver frame (Figure 3)—spring compresses. Insert tab on other end of louver into opposite louver
frame. For left airflow, compress spring into top louver frame. For right airflow, compress spring into bottom
louver frame.
c. Install all remaining louvers in accordance with steps 5a and 5b.
1/2-INCH
SCREWS
3/8-INCH
SCREWS
Figure 3. Louver Installation
6. For option CD59, install vertical louvers as follows:
a. Assemble louver frame (see Figure 4). Secure both sides to both supports using 3/8-inch screws.
COMPRESSION
SPRING
COMPRESSION
SPRING

Specifications and illustrations subject to change without notice or incurring obligations.
Latest version of this manual is available at www.reznorhvac.com.
©2022 Nortek Global HVAC LLC, O’Fallon, MO. All rights reserved.
LDAP-CD57,58,59 (01-22) 208899-A
INSTALLATION—CONTINUED
Figure 4. Louver Frame
b. Install assembled louver frame:
(1) Position assembled louver frame in nozzle outlet so that holes in tabs on sides align with holes in nozzle.
Tabs fit between horizontal louvers already installed in nozzle discharge.
(2) Secure louver frame tabs to nozzle using 3/8-inch screws—ensure that screw ends are inside nozzle.
(3) Align holes in louver frame supports and holes in nozzle side fillers with holes in nozzle outlet and secure
louver frame and side fillers to nozzle outlet using 1/2-inch self-drilling screws.
(4) Install vertical louvers in accordance with steps 5a, 5b, and 5c.
⚠ WARNING ⚠
To avoid burns, adjust louvers while heater is not in operation. If louvers must be adjusted while
heater is operating, wear protective gloves.
7. Adjust all louvers to provide desired throw pattern.
8. Repeat steps 1 through 6 as required for each heat section.
9. Turn ON gas and electric power.
10. Light heater in accordance with lighting instructions.
11. Check for proper operation.
SUPPORT
SIDE
SIDE