UDZ Installation Manual
Table Of Contents
- UNIT HEATER INSTALLATION/OPERATION/MAINTENANCE (MODEL UBX: STANDARD POWER VENT BLOWER TYPE, MODEL UBZ: SEPARATED-COMBUSTION BLOWER TYPE, MODEL UDX: STANDARD POWER VENT FAN TYPE, AND MODEL UDZ: SEPARATED-COMBUSTION FAN TYPE)
- TABLE OF CONTENTS
- GENERAL INFORMATION
- INSTALLATION
- CONTROLS
- OPERATION
- ADJUSTMENTS
- MAINTENANCE
- Service Checklist
- Maintenance Procedures
- Burner Maintenance
- Burner Orifice Maintenance
- Heat Exchanger Maintenance
- Ignition System Maintenance
- Maintenance of Fan Motor, Fan Blades, and Fan Guard
- Venter Motor and Wheel Assembly Maintenance
- Operating Gas Valve Maintenance
- Pressure Switch Maintenance
- High Temperature Limit Control Maintenance
- Flame Rollout Switch Maintenance (Model UDZ Unit Sizes 030–125 Only)
- Interlock Door Switch Maintenance (Models UBZ and UDZ Only)
- Transformer Maintenance
- Disconnect Switch Replacement (Models UBZ and UDZ Only)
- Vent or Vent/Combustion Air System Maintenance
- TROUBLESHOOTING
- INSTALLATION RECORD (TO BE COMPLETED BY INSTALLER)
- FIGURES
- Figure 1. Heater Throw Patterns (Refer to Table 2 and Table 3)
- Figure 2. Dimensions—Models UBX and UBZ (Refer to Table 4)
- Figure 3. Dimensions—Models UDX and UDZ (Refer to Table 5)
- Figure 4. Confined Space Combustion Air Openings (Refer to Table 8)
- Figure 5. Plugging Unused Suspension Points (Models UBZ and UDZ Only)
- Figure 6. Option CK10 Hanger Kit
- Figure 7. Option CK22 Hanger Kit
- Figure 8. Heater Suspension Using Field-Supplied Threaded Rods
- Figure 9. Gas Connections
- Figure 10. Supply Wiring Entrance and Control Connection Terminal Strip
- Figure 11. Circuit Board (DSI Control Module)
- Figure 12. Component Locations (Typical)
- Figure 13. Gas Valve ON/OFF Control
- Figure 14. Pressure Switch
- Figure 15. Gas Valves
- Figure 16. Typical Burner Assembly
- Figure 17. Ignitor Spark Gap
- Figure 18. Fan Blade Positioning and Spacing
- Figure 19. Venter Motor and Wheel Assembly
- Figure 20. Replaceable Components
- Figure 21. DSI Control Module Troubleshooting Flowchart
- TABLES
- Table 1. Related Technical Manuals Available from Factory Distributor
- Table 2. Heater Throw Distances with Standard Horizontal Louvers at Mounting Heights of 5 to 18 Feet
- Table 3. Heater Throw Distances with Standard Horizontal Louvers at Mounting Heights of 1.5 to 5.5 Meters
- Table 4. Dimensions—Models UBX and UBZ
- Table 5. Dimensions—Models UDX and UDZ
- Table 6. Clearances to Combustibles
- Table 7. Unit Weights
- Table 8. Determining Confined Space Combustion Air Requirements
- Table 9. Technical Data for UBX and UBZ Models (Unit Sizes 030–125)
- Table 10. Technical Data for UBX and UBZ Models (Unit Sizes 150–400)
- Table 11. Technical Data for UDX and UDZ Models (Unit Sizes 030–125)
- Table 12. Technical Data for UDX and UDZ Models (Unit Sizes 150–400)
- Table 13. Field-Installed Options
- Table 14. Gas Supply Line Sizes
- Table 15. Gas Connection Sizes
- Table 16. Pressure Switch Settings
- Table 17. Operating Sequence (Normal Heat Cycle)
- Table 18. Operating Sequence (Abnormal Heat Cycle)
- Table 19. Fault Modes
- Table 20. Required Manifold (Outlet) Gas Pressure
- Table 21. Inputs and Capacities by Elevation in US
- Table 22. Inputs and Capacities by Elevation in Canada
- Table 23. Fan Blade Spacing
- Table 24. General Troubleshooting
- Table 25. Circuit Board (DSI Control Module) Display Codes
14
UBX-UBZ-UDX-UDZ-IOM (03-22) 1034344-C
Table 11. Technical Data for UDX and UDZ Models (Unit Sizes 030–125)
Parameter
Unit Size
030 045 060 075 100 125
Input heating capacity (BTUh) 30,000 45,000 60,000 75,000 105,000 120,000
Input heating capacity (kW) 8.8 13.2 17.6 22.0 30.8 35.2
Thermal efficiency (%) 82 83 83 83
Output heating capacity (BTUh)
1
24,600 37,350 49,800 62,250 87,150 99,600
Output heating capacity (kW)
1
7.2 10.9 14.6 18.2 25.5 29.2
Gas connection, natural (inches)
2
1/2 1/2 1/2
Gas connection, propane (inches)
2
1/2 1/2 1/2
Vent connection diameter (inches)
3
4 4 4
Combustion air inlet diameter, UDZ models (inches)
3
4 4 4
Control, 24V (amps) 1.0 1.0 1.0
Full load amps, 115V (amps) 1.9 2.4 2.4 3.7 4.3 5.6
Maximum overcurrent protection, 115V (amps)
4
15 15 15
Normal power consumption, UDX models (watts) 109 155 155 217 276 354
Normal power consumption, UDZ models (watts) 109 155 155 228 292 370
Discharge air temperature rise (°F) 50 55 60 60
Air volume (cfm) 456 629 769 961 1345 1537
Air volume (meters/minute)
3
12.9 17.8 21.8 27.5 36.7 45.9
Discharge air opening area (feet)
2
0.96 1.25 2.01
Discharge air opening area (meters)
2
0.09 0.12 0.19
Output velocity (fpm) 475 656 616 770 668 763
Output velocity (meters/minute) 145 200 188 235 204 233
Open fan motor size (horsepower) 0.02 0.03 0.03 0.06 1/30 1/20
Enclosed fan motor size (horsepower) 0.06 0.06 1/4
Fan motor speed (rpm) 1550 1550 1050
Fan diameter (inches) 10 12 16
Sound level @ 15 feet (dBa) 40 40 49 54 55
1
CSA ratings for elevations up to 2,000 feet.
2
Size shown is for gas connection to a single-stage gas valve—not supply line size.
3
Smaller and/or larger vent and combustion air pipe diameters may be permissible. Refer to appropriate venting instructions listed in Table 1.
4
MOCP = 2.25 × (largest motor FLA) + smallest motor FLA. Answer is rounded to the next lower standard circuit breaker size.
GENERAL INFORMATION—CONTINUED
Acoustical Considerations—Continued