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Revision: CP-UB-UD-UEZ-DN (03-21) 1036421-0
Supersedes: — (Original Version)
DOWNTURN NOZZLE KIT INSTALLATION FOR UNIT HEATERS
OPTIONS CD2, CD3, CD4, AND CD5 FOR MODELS UBX, UBZ, UDX, UDZ, AND UEZ
Downturn nozzles are designed to direct the discharge air in a more vertical flow. Ensure that all components listed
in Table 1 are available before beginning installation.
Table 1. Downturn Nozzle Assembly Components
Unit Size (UBX, UBZ, UDX, UDZ) Unit Size (UEZ)
Option Component
Kit package, UBX/UDX 1036261 1036262 1036263 1036264 1036265 1036266
CD2
Kit package, UBZ/UDZ 1036267 1036268 1036269 1036270 1036271 1036272
Kit package, UEZ — — 1036270 1036272
Kit package, UBX/UDX 1036273 1036274 1036275 1036276 1036277 1036278
CD3
Kit package, UBZ/UDZ 1036279 1036280 1036281 1036282 1036283 1036284
Kit package, UEZ — — 1036282 1036284
Kit package, UBX/UDX 1033921 1033921 1033921 1034669 1034669 1034670
CD4
Kit package, UBZ/UDZ 1036291 1036292 1036293 1036294 1036295 1036296
Kit package, UEZ — — 1036297 1036296
Kit package, UBX/UDX 1036306 1036307 1036308 1036309 1036310 1036311
CD5
Kit package, UBZ/UDZ 1036312 1036313 1036314 1036315 1036316 1036317
Nozzle section, right side*
Nozzle section, left side*
Nozzle section, top*
CD2,
CD3,
Nozzle blockoff, UBX/UDX 1036215 1034686 1036205 1036206 1036207 1036208
CD4
Nozzle blockoff, UBZ/UDZ 1036209 1036210 1036211 1036212 1036213 1036214
Nozzle blockoff, UEZ — — 1036212 1036214
Nozzle section, bottom*
Nozzle section, right side*
Nozzle section, left side*
Nozzle section, top*
CD5
Nozzle blockoff, UBX/UDX 1036215 1034686 1036205 1036206 1036207 1036208
Nozzle blockoff, UBZ/UDZ 1036209 1036210 1036211 1036212 1036213 1036214
Nozzle section, bottom*
CD3
Blockoff panel
CD5 1033920 1036216 1036217 1036218 1036219 1036220 —
CD4
Vertical louver frame
CD5 1028413 1028433 1028443 1033695 1033715 1033728 —
CD4
Vertical louver
CD5
*Quantity is two (2) for options CD3 and CD5. All other quantities are (1) unless otherwise indicated.
**Quantity is five (5).
***Quantity is eight (8).
030, 045 060, 075 100, 125 150, 175, 200 225, 250 300, 350, 400 130, 180 260, 310
PN
Kit Packages
—
—
—
—
Common Parts
1033918 1034681 1034682 1034683 1034684 1034685 1034683 1034685
1033917 1034676 1034677 1034678 1034679 1034680 1034678 1034680
1033919 1034671 1034672 1034673 1034674 1034675 1034673 1034675
—
1033921 1034669 1034670 1034669 1034670
1033918 1034681 1034682 1034683 1034684 1034685
1033917 1034676 1034677 1034678 1034679 1034680
1033919 1034671 1034672 1034673 1034674 1034675
1033921 1034669 1034670
Kit-Specific Parts
1033920 1036216 1036217 1036218 1036219 1036220 1036218 1036220
1028413 1028433 1028443 1033695 1033715 1033728 1033695 1033728
1028418** 1028434** 1028441** 1033904*** 1033961*** 1033730*** 1033904*** 1033730***
1028418** 1028434** 1028441** 1033904*** 1033961*** 1033730***
—
—
⚠ DANGER ⚠
• Improper installation, adjustment, alteration, service, or maintenance can cause property
damage, injury, or death. Read the installation, operation, and maintenance instructions
thoroughly before installing or servicing this equipment.
• Installation should be done by a qualified agency in accordance with these instructions and
in compliance with all codes and requirements of authorities having jurisdiction.
DO NOT DESTROY. PLEASE READ CAREFULLY. KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.
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INSTALLATION
NOTES:
• Models UDX and UDZ are designed for either two- or four-point suspension. Models UBX, UBZ,
and UEZ are designed for four-point suspension.
• Before installing a downturn nozzle, ensure that the unit is installed with four-point suspension
in accordance with the installation manual provided with the unit and ensure that the location
provides sufficient clearance for nozzle option being installed.
Install the downturn nozzle kit as follows:
1. Asssemble downturn nozzle assembly (see Figure 1) as follows:
a. Secure both side sections to top section using screws.
b. Slide bottom section into place so that it rests on small tabs on each side.
c. If installing option CD3 or CD5, assemble second nozzle section. Sections will be joined in step 12.
NOZZLE BLOCKOFF
CD3, CD5
BLOCKOFF
PANEL
CD2, CD4
Figure 1. Downturn Nozzle Assemblies
2. If heater is installed, turn OFF gas and electric power. Allow time for louvers to cool before proceeding.
3. Remove each horizontal louver by pushing louver toward spring to release louver.
4. Remove door on right side of unit to access screws that secure face plate assembly (see Figure 2) to front of
unit. Remove screws and remove face plate assembly.
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CP-UB-UD-UEZ-DN (03-21) 1036421-0
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FACE PLATE ASSEMBLY
LOUVER FRAM
E
FACE PLATE
Figure 2. Typical Face Plate Assembly and Louver Frame
5. If installing option CD4 or CD5, position louver frame (see Figure 2) in face plate outlet so that holes align and
secure frame to face plate using screws from kit.
6. Position downturn nozzle assembly in face plate so that holes align and secure nozzle to face plate using screws
from kit.
7. Install nozzle blockoff (see Figure 1) and secure to face plate using screws from kit.
8. Position face plate assembly with downturn nozzle assembly so that holes align and secure both assemblies—
through face plate opening on left side, top, bottom and through door opening on right side—to front of unit using
screws from kit. Replace door on right side of unit.
9. Secure nozzle blockoff installed in step 7 to right panel of unit.
10. If installing option CD3 or CD5, secure blockoff panel (see Figure 1) to nozzle blockoff installed in step 7.
11. If installing option CD3 or CD5, position second assembled nozzle section in outlet of nozzle already attached
to heater. Secure second nozzle section to first nozzle section using screws from kit to create downturn with two
sections.
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.
12. Install vertical louvers in louver frame as follows:
a. On notched end of louver, slide compression spring over tab.
NOTE: Depending on the desired throw pattern, the end of the louver with the spring can go either
into the frame top or bottom.
b. With wider louver blade facing in toward heat exchanger, push tab with compression spring into hole in top
or bottom louver frame (see 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 12a and 12b.
CP-UB-UD-UEZ-DN (03-21) 1036421-0
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INSTALLATION—CONTINUED
COMPRESSION
COMPRESSION
SPRING
Figure 3. Louver Installation
13. Install horizontal louvers removed in step 3.
⚠ WARNING ⚠
SPRING
To avoid burns, adjust louvers while heater is not in operation. If louvers must be adjusted while
heater is operating, wear protective gloves.
14. Adjust horizontal and vertical louvers to provide desired throw pattern.
15. Turn ON gas and electric power.
16. Light heater in accordance with lighting instructions.
17. Check for proper operation.
Specifications and illustrations subject to change without notice or incurring obligations.
©2021 Nortek Global HVAC LLC, O’Fallon, MO.
All rights reserved.
CP-UB-UD-UEZ-DN (03-21) 1036421-0
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