Form P-UD (Version 10-14) Obsoletes Form P-UD (Version D.3) IMPORTANT 1. Always include complete heater model and serial number so that any specification change can be considered for parts replacement. It can save time and expense. 2. Specifications are subject to change without notice. 3. We reserve the right to substitute functional replacements 4. Order by P/N; not Heater Option Designation.
Rating Plate and Serial No. Example of a Rating Plate, Model UDAP Example of a Rating Plate, Model UDBP REZNOR® REZNOR® MERCER, PA. USA 16137 MERCER, PA. USA 16137 MADE IN MEXICO MADE IN MEXICO UNIT HEATER NRTL ANSI Z83.8 [ A ] CSA 2.6 [ A’ ] UNIT HEATER CSA .10.96 U.S. (2nd Ed.) UNIT HEATERS FOR RESIDENTIAL INSTALLATION MODEL [ B ] [ C NRTL UNIT HEATER CATEGORY [ Z ] CATEGORY [ Z ] ] ANSI Z83.8 [ A ] CSA 2.6 [ A’ ] UNIT HEATER MODEL [ SERIAL NO.
Decoding a Serial No. Example of a Serial No. BLK 79 6E N 00000 CODE Nos. 1 2 3 4 5 CODE No.
Electrical Components - Location, Quantity (Quantities other than one are listed in parenthesis.
Control Compartment Models UDBP Sizes 30-125
Electrical Components - See locations on pages 4 and 5.
Code 21A, Novar Controller (mounts on the inside wall of the control compartment) DDC Controller, P/N 207944, and other components used in Option D10 and Option D14 (D14 requires field-provided sensor) - applies to Sizes 150-400 CODE 21A 21B 22 23 24 P/N Description CODE 24 - Relay 207944 Novar Controller, Model Minio 737200000 207945 Novar Discharge Sensor Model 712007000DTS 30 (Option D10 only) 208069 Controller Bracket 195669 Gasket 18549 Relay, Heat (W/R 90-370) Order Kit P/N 263527 if replacing
Blower Motor, Capacitor, Starter, and Contactor CODE 26 - Direct Drive Motor Model UDBP and UDBS Sizes 30-125 Code Description 26 30 Direct Drive Motor Assembly 45 202731 60 75 26C Motor Band 26D Support Arm 202733 201761 1/3 HP 51221 (3) 51223 201762 3/4 HP 26E Hex Head Cap Screw 1/4” - 20 X 1-1/2” long 51231 26F 1/4” - 20 Nut (Keps) 7328 26G BX Cable, 3/8” 27 Blower Motor Capacitor, 370V 101917 5MFD 28A Capacitor End Cap 28B Capacitor Strap Bracket CODE 26A - Motor (3) 220629 288
Motors that don’t list a contactor require a starter. If a contactor is listed, starter is optional. MOTOR Type Open Mfr Reznor® HP Model No. P/N 3 AOS-H845 159185 Volt ph FLA Frame Shaft 240 3 8.6 P56Z 7/8 Service Power Factor Factor Efficiency 1.15 OVERLOAD min max 8.00 12.00 GE # STARTER P/N GE # CONTACTOR P/N GE # P/N RTA1-N 151193 CL00A310T-S 151147 42AF35AG 119627 Open 3 AOS-H845 159185 480 3 4.3 P56Z 7/8 1.15 4.00 6.
Drives - CODE 35 - Motor Pulley, CODE 36 - Blower Pulley, CODE 37 - Belt UDBP and UDBS OPEN MOTOR HP Option AL Voltage Option 150 and 175 1/4, 1/3 2, 3 AK1, AK2, AK3, AK5, AK6, AK7 150, 175, 200, 225, 250, 300, 350, and 400 1/2, 3/4, 1, 1-1/2 4, 5, 6, 7 AK1, AK2, AK3, AK5, AK6, AK7 150, 175, 200, 225, 250, 300, 350, and 400 1/2, 3/4 4, 5 AK8 150, 175, 200, 225, 250, 300, 350, and 400 1, 1-1/2 6, 7 AK8 150, 175, 200, 225, 250, 300, 350, and 400 2 8 AK1, AK2, AK3 150, 175, 200, 225, 25
Cabinet Parts CODE 64 CODE 66 CODE 65 CODE 57B 57B - Flue Collar Support, Sizes 200-400, P/N 254952 Code 40 41 42 43A 43B Description Bottom Pan Assembly Left Side Panel Heat Exchanger Support Ht Exchanger Support Gasket Sheet Metal Screw #8 - 18 x 3/8 Front Panel (if replacing on unit 4
Cabinet Parts (cont’d) Blower Backs and Blowers - UDBP and UDBS Code 70 70A 70B 70C 71 71A 71B 71C 72 73 73A 73B 73C 73D 73E 73F 73G 73H 73I 73J 73K 74 75A 75B 75C
Venter and Flue Wrapper Components CODE 109 - Venter Motor Capacitor See P/N’s below and location on page 4.
Heat Exchanger and Burner Assemblies 126 Orifice 127A Nut Gas Line from Valve Venturi Tube CODE 128, Primary Air Restrictor (propane only, sizes as listed below) 127B Orifice Adapter Bushing NOTE: Replacement heat exchanger and burner for Sizes 30-125 is illustrated. Replacement heat exchanger for Sizes 150-400 includes a tube support and four channels connecting the header to the support.
Venting and Combustion Air Kits - Models UDAS and UDBS CODES 135A and 136A Concentric Adapter Box Assembly View of Heater Connection Side View of Vent Terminal Connection Side Collar for attaching the combustion air pipe from the heater Collar for attaching the outside portion of the combustion air pipe (the vent pipe runs concentric through the outside portion of the combustion air pipe) Opening for the vent pipe.
Accessories/Options CODE 140 - High Altitude Pressure Switch Kit - Above 6000 ft/1830M Elevation (Same as Option DJ20, DJ21) - Models UDAP, UDAS, UDBP, UDBS as listed See pressure switch locations in illustrations on pages 4 and 5.
CODE 143 - Downturn Nozzles (Same as Options CD2, CD3, CD4, CD5) Option CD2 - one nozzle section with a 25-65° range of air deflection Option CD3 - two nozzle sections with a 50-90° range of air deflection Option CD4 - one nozzle section with a 25-65° range of air deflection and vertical louvers Option CD5 - two nozzle sections with a 50-90° range of air deflection and vertical louvers (use on blower Models UDBP and UDBS only) Size 30, 45 60, 75 100, 125 150, 175, 200 225, 250 300, 350, 400 Option CD2 P
Accessories/Options (cont’d) CODE 145 - Polytube Adapter, Models UDBP and UDBS Sizes 75-400 (Same as Option CD11) Model UDBP and UDBS Option Pkg P/N 75 203086 100, 125 203087 150, 175, 200 203088 225, 250 203089 300, 350, 400 203090 (2) 202966 (2) 202965 (2) 202968 (2) 202967 101250 146463 (2) 202970 (2) 202969 Components: Adapter Top/Bottom Adapter Side Discharge Panel Assy Discharge Duct Collar Clamp Sheetmetal Screws, #10 x 1/2” long Sheetmetal Screw, #10 x 3/4” long 1/4-20 x 1-1/2” long He
CODE 150 - Ceiling Suspension Kit for Model UDAP and UDAS Sizes 30-125 (Same as Option CK22) Models UDAP & UDAS 30, 45, 60, 75, 100, 125 Option CK22 Pkg P/N 197094 (2) 195496 (1) 195638 Suspension Angle Sheetmetal Screw Attach ceiling brackets to top, across front and rear of the heater. Use cabinet screws and screw from kit.
Thermostat Accessories (cont’d) CODE 164 - Thermostat Bracket Kit for Models UDAP, UDAS, UDBP, and UDBS (Same as Option CM3) Thermostat bracket option package, P/N 197077, includes: Qty Description P/N 1 2 x 4 Electrical Box 17782 1 1/2" Coupling conduit connector 7447 2 1/2" Chase Nipples 3618 1 Bracket 197072 1 Screw (self drilling) 195249
