Revision: P-UBX-UBZ-UDX-UDZ (05-21) 1034346-0 Supersedes: — (Original Version) UNIT HEATER REPLACEMENT PARTS MODEL UBX: STANDARD POWER VENT BLOWER TYPE MODEL UBZ: SEPARATED-COMBUSTION BLOWER TYPE MODEL UDX: STANDARD POWER VENT FAN TYPE MODEL UDZ: SEPARATED-COMBUSTION FAN TYPE TABLE OF CONTENTS WARRANTY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WARRANTY • One-year limited warranty on the heater. • Nine-year extended limited warranty on the heat exchanger, burner, and flue collection box assembly. • Four-year extended limited warranty on all electrical and mechanical operating components (with the exception of blower belts). • Contact your distributor for details. REFERENCES Table 1.
ELECTRICAL COMPONENTS NOTES: • To connect supply wires and access the disconnect switch (item 20), remove the cover (item 18) from the electrical box. • The color listed for the flame rollout switch (item 4) is the color of the identifying dot on the label. • The control module fuses (item 7A) may be replaced with field-supplied type ATC or ATO 3-amp fuse (color code: violet). 4 8 1 14 19 12 15 15A 16 Electric Box 20 9 7 7 Figure 1.
ELECTRICAL COMPONENTS—CONTINUED Table 3. Electrical Components (Unit Sizes 030–125) Item Component No.
Table 4. Electrical Components (Unit Sizes 150–400) —Continued Item Component No.
ELECTRICAL COMPONENTS—CONTINUED Item 1: High Temperature Limit Control, Auto Reset Item 4: Flame Rollout Switch, Manual Reset Item 2: Bracket Item 3: Plate Item 7: Circuit Board Item 8: Flame Sensor Item 10: Transformer Item 9: Ignitor Item 11: Stepdown Transformer 350VA Item 12: Fan Motor Item 14: Pressure Switch Item 13: Fan Motor Capacitor Item 15: Gas Valve Single-Stage Item 16: Terminal Board Item 19: Interlock Door Switch Two-Stage Item 20: Disconnect Switch Figure 2.
Table 5. Stepdown Transformer Kit (Option CG1, CG2, or CG4) Components Unit Size Component Stepdown transformer kit package Transformer, 0.25kVA Transformer, 0.5kVA Transformer, 0.75kVA Transformer, 1kVA Model Option* UBX, UBZ CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 CG1 CG2, CG4 UDX, UDZ UDX, UDZ UBX, UBZ UDX, UDZ UDX, UDZ UBX, UBZ UDX, UDZ Transformer, 1.
ELECTRICAL COMPONENTS—CONTINUED Table 5.
BLOWER COMPONENTS NOTE: Motors that don’t list a contactor in Table 9 or Table 10 require a starter. If a contactor is listed, the starter is optional. Item 1: Belt-Drive Blower Motor Assembly Item 1: DirectDrive Blower Motor Assembly Item 2: Capacitor Item 1A: Motor Item 3: Starter Item 5: Contactor and Item 4: Starter Overload Figure 4. Individual Blower Components (Refer to Table 7, Table 8, Table 9, and Table 10) Table 7.
Item 1A: Motor Full Shaft Load Manufacturer’s Frame Service Power Voltage/ HP Size Efficiency Amps Model Size Factor Factor Phase (Inches) (FLA) 4.6 1.35 — 120/1 BF2024 48/56 208/1 2.3 1.15 63 59.0% 240/1 1/4 1.1 208/3 74.0% 1.4 M3003 K48 1.35 72 240/3 0.75 81.0% 480/3 1/2 6.0 120/1 BF2034 48/56 208/1 3.0 240/1 1/3 1.35 1.4 208/3 1.6 M3007 K48 240/3 0.8 480/3 8.8 120/1 5.1 BF2054 56Z 1.15 208/1 4.4 240/1 1/2 2.5 208/3 3.0 H880 LA56 240/3 1.25 1.5 — 480/3 0.9 H991 H56 575/3 11.0 120/1 5.
P-UBX-UBZ-UDX-UDZ (05-21) 1034346-0 11 5 3 2 7.0 6.6 3.5 2.6 13.7 12.4 9.0 8.6 4.3 3.6 13.4 13.2 6.6 5.4 AOS-H956 AOS-196033J Y56HZ N56Z AOS-H954 L56 AOS-B735 P56Z L56 AOS-H965V1 AOS-H845 56HZ AOS-H886 7/8 7/8 5/8 7/8 1.15 1.15 Item 1A: Motor Full Shaft Load Manufacturer’s Frame Service HP Size Amps Model Size Factor (Inches) (FLA) 15.0 7.8 C621 56 1.2 7.5 5/8 1.5 5.6 5.0 AOS-H884L UA56 1.15 2.8 2.0 AOS-H960 LA56H 7/8 24.6 1 AOS56H 5/8 RB1204AV1 12.3 84.0% 85.3 85.9 87.2 80.3 94.
Item 1A: Motor Item 3: Starter Item 4: Starter Overload Full Shaft Load Manufacturer’s Frame Service Power Voltage/ GE Min Max GE HP Size Efficiency PN PN PN Amps Model Size Factor Factor Phase Model Amps Amps Model (Inches) (FLA) 3.8 1 120/1 CL00A310T-J 151146 2.50 2.50 RTA1-K 151190 Regal Beloit 2.0 H56 — 208/1 16074 CL00A310T-L 151150 C664 1.35 1.90 2.70 RTA1-J 151189 1.9 240/1 CL00A310T-S 151147 1/4 5/8 208/3 CL00A310T-L 151150 1.90 1.1 1.00 RTA1-G 151187 USMTR 56 1 61.9 72.1% 240/3 1.
P-UBX-UBZ-UDX-UDZ (05-21) 1034346-0 13 Item 1A: Motor Item 3: Starter Item 4: Starter Overload Item 5: Contactor Full Shaft Load Manufacturer’s Frame Service Power Voltage/ GE Min Max GE GE HP Size Efficiency PN PN PN PN Amps Model Size Factor Factor Phase Model Amps Amps Model Model (Inches) (FLA) 16.4 120/1 CL02A310T-J 151156 14.50 18.00 RTA1-S 151196 42AF35AF 119626 9.5 AOS-C686 TK56H — 208/1 94347 CL00A310T-L 151150 8.00 12.00 RTA1-N 151193 8.
BLOWER COMPONENTS—CONTINUED Table 10.
Table 11.
BLOWER COMPONENTS—CONTINUED DIRECT-DRIVE MOTOR ASSEMBLY BELT-DRIVE MOTOR 9–19 2A 4 UNIT SIZES 030–075 4 2 UNIT SIZES 100–125 2 UNIT SIZES 150–400 Figure 5. Blower Backs and Blowers (Refer to Table 12 and Table 13) Table 12. Blower Backs and Blowers (Unit Sizes 030–125) HP Item No.
Table 13. Blower Backs and Blowers (Unit Sizes 150–400) HP All Item No.
29 28 8B 15 8 6 7 9 21 13 1 2 3 20 22 24 27 26 CABINET COMPONENTS Figure 6.
Table 14. Cabinet Components (Unit Sizes 030–125) Item No.
CABINET COMPONENTS—CONTINUED Table 15. Cabinet Components (Unit Sizes 150–400) Item Component No.
VENTER AND FLUE WRAPPER COMPONENTS 8 9 7 2 Item 4: Venter Motor Capacitor 3F 1 3I 3B 3C 3J 3A 5 3G Item 3: Venter Motor and Wheel Assembly UNIT SIZES 030–100 UNIT SIZE 125 UNIT SIZES 150–400 Figure 7.
VENTER AND FLUE WRAPPER COMPONENTS—CONTINUED Table 16. Venter and Flue Wrapper Components (Unit Sizes 030–125) Item No.
Table 17. Venter and Flue Wrapper Components (Unit Sizes 150–400) Item Component No.
VENTER AND FLUE WRAPPER COMPONENTS—CONTINUED Table 17. Venter and Flue Wrapper Components (Unit Sizes 150–400) —Continued Item Component No. Description 115V, 4μF, 400VA 115V, 5μF, Venter 400VAC 4 motor 208/230V/1PH capacitor (cont.
Table 18. Burner Assembly Components (Unit Sizes 030–125) Item No.
HEAT EXCHANGER AND BURNER ASSEMBLIES—CONTINUED Table 19. Burner Assembly Components (Unit Sizes 150–400) Item No.
VENTING AND COMBUSTION AIR KIT COMPONENTS (MODELS UDZ AND UBZ) NOTES: • There are three venting and combustion air kits. Kit components are shown in Figure 9 and listed in Table 21. • The vertical vent terminal/combustion air package is the same as option CC2. The horizontal vent terminal/combustion air package is the same as option CC6. Kit components.
VENTING AND COMBUSTION AIR KIT COMPONENTS (MODELS UDZ AND UBZ)—CONTINUED Table 21. Venting and Combustion Air Kit Components Kit Vertical vent kit (same as option CC2) Unit Size 030–125 150–400 Kit PN 205895 Item No.
Vertical Louver Assembly Components NOTE: When installed, vertical louvers must be adjusted to achieve the desired airflow pattern. The vertical louver assembly (see Figure 11) is the same as option CD1. Assemblies and their components are listed in Table 23. Figure 11. Vertical Louver Assembly Table 23.
ACCESSORIES/OPTIONS—CONTINUED Downturn Nozzle Assembly Components The downturn nozzle assembly (see Figure 12) is the same as option CD2, CD3, CD4, or CD5. Assemblies and their components are listed in Table 24. NOZZLE BLOCKOFF CD3, CD5 BLOCKOFF PANEL CD2, CD4 Figure 12. Downturn Nozzle Assemblies Table 24.
Duct Flange Assembly The duct flange assembly is the same as option CD9. The duct flange assembly is used only on UBX and UBZ models (refer to Table 25). Table 25.
ACCESSORIES/OPTIONS—CONTINUED Blower Inlet and Belt Guard Assemblies The blower inlet guard and belt guard assemblies (see Figure 14) together are the same as option CD10. The blower inlet guard assembly, when ordered separately is the same as option CD12. These guard assemblies are used only on UBX and UBZ models (refer to Table 27). Blower Inlet Guard Assembly Belt Guard Assembly Figure 14. Blower Inlet and Belt Guard Assemblies Table 27.
Hanger Kit There are two hanger kit options (see Figure 15), one for two-point suspension (same as option CK8) and one for four-point suspension (same as option CK10). Refer to Table 28 for hanger kit assembly components. Two-Point Suspension Four-Point Suspension Figure 15. Hanger Kits Table 28.
ACCESSORIES/OPTIONS—CONTINUED Manual Shutoff Valve Assembly The manual shutoff valve assembly (see Figure 17) is the same as option CE1. The manual shutoff valve assembly and its components are listed in Table 30. Figure 17. Manual Shutoff Valve Assembly Table 30.
Relay Kits NOTES: • There are two relay kit options (see Figure 19), one for controlling two heaters (same as option CL31) and one for controlling up to six heaters (same as option CL32). Refer to Table 32 for relay kit components. • The relay kit may be installed on the control heater and on up to five additional heaters. • The cable clamp (item 3) and relay bracket assembly (item 1) are secured using an existing cabinet screw.
ACCESSORIES/OPTIONS—CONTINUED Thermostat Bracket Kit NOTES: • The thermostat bracket kit (see Figure 20) is the same as option CM3. Refer to Table 33 for thermostat bracket kit components. • The left side of the bracket (item 4) is secured to the heater using an existing cabinet screw. The right side is secured using the screw (item 5) from the kit. 3 5 4 EXISTING CABINET SCREW 2 1 3 Figure 20. Thermostat Bracket Kit (Refer to Table 33) Table 33. Thermostat Bracket Kit Components Item No.