Parts Manuals User Manual

ManualsBrandsReznor ManualsRadiatorsACUB

Form P-CAUA, P/N 271166 R2, Page 1

IMPORTANT

1. Always include complete heater model and

serial number so that any specication change

can be considered for parts shipment. It can

save time and expense.

2. Specications are subject to change without

notice.

3. We reserve the right to substitute functional

replacements.

4. Order by Part No.; not Heater Option

Designation.

Replacement Parts

Applies to: Model CAUA and

Cased Cooling Coil

Model ACU

Form P-CAUA (Version 10-14)

Obsoletes Form P-CAUA (Version C.1)

Model CAUA Upow

Furnace/Blower Unit

with Model ACU

Cooling Coil and

Optional Mixing Box



Index

Bearings 12, 13

Belt 9, 10, 11

Blower 12

Blower Mount Assy 12, 13

Bottom Return Air Filter

Cabinet 21

Burner 16

Cabinet Parts 14

Capacitor 3, 4

Venter Motor Capacitor 15

Cooling Coil 22

Coils 23

Coils for Starter Overloads 8

Concentric Adapter 15

Condensate Drain Kit 17

Remote Consoles 5

Contactor 3, 4

Damper Controls 19

Damper Linkage 19

Damper Rod 19

Dampers 18

Discharge Plenum 24

Disconnect Switches 5

Door Interlock Switch 3, 4

Door Latch Kit 20

Belt Drives 9

Drive Table for TEFC

MOTORS 10, 11

Ductstat 3, 4

Electrical Components 3, 4

Enthalpy Control 19

Evaporator Coi 23

Filter Cabinets 20

Filter Rack 18

Filters 18, 20, 21, 24

Flame Rollout Switch 3, 4

Flame Sensor 4

Gas Conversion Kits 17

Heat Exchanger 16, 17

Ignition Board 3, 4

Ignition Cable 3, 4

Inlet Base 24

Isolator 14

Red Light 5

Limit Control 3

Line Reactors (VFD) 6

Logic Module 19

Mixed Air Controller 19

Mixing Box 18

Belt-Driven Blower Motor 8

MOTOR 7, 8

Belt-Driven Blower Motor 7

Blower Motor, Direct Drive 3

Damper Motor 19

Motor Mounting Plate 12, 13

Burner Orices 17

Outdoor Air Controller 19

Paint 14

Potentiometer 19

Pressure Switch 3, 4

Blower Pulley 9, 10, 11

Motor Pulley 9, 10, 11

Rating Plate 2

Reducers 23

Relay 3, 4

Enthalpy Sensor 19

Flame Sensor 3

Mixed Air Sensor 19

Serial No. 2

Blower Shaft 12, 13

Spark Electrode 3, 4

Starter 8

STARTER 8

Starter 7

Starter OVERLOAD 7, 8

Static Pressure Tap 17

Terminal Strip 3, 4

TEV Bulb Placement 23

Thermostat Cover 5

Thermostatic Expansion

Valve 22

Thermostatic Expansion

Valves 23

Thermostats 5

Transformer 3, 4

Tubing 3

Variable Frequency Drive

(VFD) 6

Vent/Combustion Air Kits 15

Vent Cap 15

Venter Housing 15

Venter Motor 15

Summary of content (24 pages)

PAGE 1
Form P-CAUA (Version 10-14) Obsoletes Form P-CAUA (Version C.1) Replacement Parts IMPORTANT Applies to: Model CAUA and Cased Cooling Coil Model ACU 1. Always include complete heater model and serial number so that any specification change can be considered for parts shipment. 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 Part No.; not Heater Option Designation.
PAGE 2
Rating Plate and Serial No. Rating Plate Sample Rating Plate Key: AA/A = Date of ANSI Standard AA1/A1 = Date of CGA Standard B = Model No.
PAGE 3
Electrical Components (See page 7 for belt-drive blower motors and starters and page 19 for damper controls.
PAGE 4
Electrical Components (cont’d) CODE 1 - Transformer, Products Unlimited #400-09V28CH80, 40VA, 208/230V to 24V, P/N 164328 Transformer Bracket, P/N 164518 CODE 4 CODE 5 Transformer, Ignition Board, 208/240V to 230V, UTEC 24V, 40 VA, 1097-211, P/N BE21539001, 195573 (used in Optional Mixing Box), P/N 103497 When replacing a RAM 3MC4-06 (Serial No. Code 76) or J/C G822KCC5401D (Serial No. Code 77) on a unit manufactured before 3/09, order replacement kit, P/N 258251.
PAGE 5
Thermostats and Accessories CODE 34 - 1-stage, Honeywell T812C1000 Heating/Cooling Thermostat, Option CL1, P/N 255350 CODE 35 - Electronic Two-Stage Thermostat, M/H TH5220D1029, 24 volt, 2-stage heating/2-stage cooling, Option CL22, P/N 220630 (replaces P/N 93435, 93436, and 93437) CODE 36 - Electronic Two-Stage Thermostat, M/H TB8220U1003, 7-day programmable, touchscreen, 24 volt, 2-stage heating / 2-stage cooling, Option CL23, P/N 257338 CODE 37 - 5-2 Programmable Thermostat, M/H TH411D1007, 24 volt, h
PAGE 6
Code 42 - Variable Frequency Drive (VFD) Voltage AK2 AK3 AK5 AK6 AK7 AK8 208/1/60 230/1/60 208/3/60 230/3/60 460/3/60 575/3/60 Voltage AK2 AK3 AK5 AK6 AK7 AK8 208/1/60 230/1/60 208/3/60 230/3/60 460/3/60 575/3/60 Voltage AK5 AK6 AK7 AK8 208/3/60 230/3/60 460/3/60 575/3/60 Open Dripproof Motor AL4 1/2 HP 221564 221564 221569 221569 221575 N/A AL5 3/4 HP N/A N/A 221570 221570 221576 N/A AL6 1 HP 221565 221565 221571 221571 221577 N/A AL7 1.
PAGE 7
Replacement Belt-Driven Blower Motors and Starters Replacement Belt-Driven Motors (See CODE 22, pages 3-4, for direct-drive motor.) See CODE 17, page 3-4, for contactors for 1 phase and 3 phase motors with internal overloads. Motors in the tables on pages 6-8 that are highlighted in gray do not have internal overload protection and must be used with the motor starter and overload listed in the table. Starters and overloads listed for the motors not highlighted are optional.
PAGE 8
Replacement Belt-Driven Blower Motors and Starters (cont’d) Code 45 - MOTOR Type HP TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC TEFC 0.5 0.5 0.5 0.5 0.5 0.5 0.75 0.75 0.75 0.75 0.75 0.75 1.0 1.0 1.0 1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.5 2.0 2.0 2.0 2.0 2.0 3.0 3.0 3.0 3.0 3.0 5.0 5.0 5.0 5.0 5.
PAGE 9
Components of Belt Drives The drive components include the belt, the motor pulley, the blower pulley, and bushings, if required. The table at the right identifies the RPM range of the drive option. Drive options are listed by AM No. in the Drive Tables. Belt Tension - Check belt tension. Proper belt tension is important to the long life of the belt and motor. A loose belt will cause wear and slippage. Too much tension will cause excessive motor and blower bearing wear.
PAGE 10
Components of Belt Drives (cont’d) Drive Table for OPEN MOTORS (cont’d) CAUA Size 300 3 Opt No. AL9 3 AL9 AK5,6,7,8 5 AL10 AK2,3 HP AK99 1” 111609 AK99 1” 88558 A50 AM20, AM21, AM22, AM23 111681 1VP50 1-1/8” 111609 AK99 1” 50475 A49 7/8” P/N Mfr No.
PAGE 11
Drive Table for TEFC MOTORS (cont’d) CAUA Size 250 300 MOTOR 1/3 1/2 3/4 1 Opt No. AL20 AL21 AL22 AL23 Voltage (See Key page 8.
PAGE 12
Blower and Linkage Components for Model CAUA with a Direct-Drive Blower Motor Quantities other than one are in parenthesis.
PAGE 13
CAUA with a 2-5 HP Belt Driven Motor Code 80 80A 80B 80C 80D 80E 80F 80G 81 82A 82B 83 84 85 86 87 88 89 90 91 92 93A 93B 93C 93D 93E 93F Description 250 163174 163175 160136 163425 (2)160179 160628 Blower Mount Assy (includes 80A-H) Blower Mount Blower Mounting Angle Support Blower Mount Brace Hole Plug, Heyco #DP8753703, 7/8” Air Baffle Blower Discharge Connector Gasket, Foam, 1-1/8” Blower, Lau Right Blower, Lau Left Blower, Lau Threaded Insert, 5/16-8 Blower Mounting Angle or Bracket (left) Blower M
PAGE 14
CAUA Cabinet Parts (white gloss finish) and Venter Assembly CODE 111A - Vibration Isolator Pad CODE 111, Vibration Isolator Kit, same as Option PC4, includes 4 pads.
PAGE 15
Code Description 113 114 115 115A 115B 115C 115D 115E 115F 115G 115H 116 Venter Housing Assy (housing, collar, and static pressure tap) Venter Gasket (not illustrated) Venter Motor and Wheel Assy (includes 1154A-H) Venter Motor, Magnetek, with capacitor, P/N 101917 Venter Motor Capacitor ONLY Fan, PM Motor Co., 2.
PAGE 16
Burner Box and Heat Exchanger *IMPORTANT: Burner box covers were redesigned for easier access. If replacing burner box covers (CODE 147 or 148) on a unit manufactured prior to 1/01, it is necessary to order the right side (CODE 147), the left side (CODE 148), left side gasket (CODE 149), the front cover (CODE 158) and the burner cover gasket (CODE 159).
PAGE 17
Code Description Qty 134 Burner Box 150 200 300 350 400 1 193997 193998 193999 409SS 1 258985 258986 258987 135 Drain Hole Seal 165741 1 136 Manifold 1 151787 151788 137 Burner/Manifold Support 2 160437 160437 8 10 > 138 250 Aluminized Natural Gas Burner Orifices (sea level) Propane 139 Burner Rack Assy (burners and support rack) 139A Burner Support Rack 1 > 160932 160933 160934 160928 13 164866 2.
PAGE 18
Mixing Box (Outside and Return Air) Complete mixing box packages are shipped assembled for field installation. MIXING BOX CONFIGURATIONS See list below (CODES 170 - 178) for cross-reference of Option Codes and P/N’s by CAUA Sizes.
PAGE 19
Mixing Box Damper Controls - See controls by option code (bottom of page). Transformer is on page 3. CODE 193A - Damper Motor for 2-Position Damper (open/ closed), P/N 209351 If replacing previously used motor P/N 66376, order Replacement Kit, P/N 209423.
PAGE 20
Side and Rear Return Air Filter Cabinets If a complete cabinet package is ordered, cabinet is shipped unassembled. Assembly is required.
PAGE 21
Bottom Return Air Filter Cabinet, Options CW 13, 14, 15, and 16 If a complete cabinet package is ordered, cabinet is assembled at the factory before shipping. Filters and cabinet outer panels are listed here. If other components are required, contact your distributor. Return air enters through the bottom of the filter cabinet. Cabinet may be placed with filter access doors on either front or rear of heater.
PAGE 22
Cased Cooling Coil Model ACU or Option C Model ACU Cased Cooling Coil 258 Model CAUA Upflow Furnace/ Blower Model ACU Cased Cooling Coil ACUA with ACUA with ACUA with ACUB with ACUB with ACUB with ACUC with ACUC with ACUC with 060 072 090 090 120 150 120 150 180 Model CAUA 150/200 with Option C060 150/200 150/200 250/300 250/300 250/300 350/400 350/400 350/400 C072 C090 C090 C120 C150 C120 C150 C180 Code Description Replacement P/N’s 250 Casing Inn
PAGE 23
Single AUD1 257328 2 20 28 10 258856 5/8 216428 234052 BBIZE-5 7/8 5/8 10 258858 5/8 None 220552 BBIZE-2 5/8 1/2 072 Single AUD1 257329 2 20 28 12 258857 7/8 None 220555 BBIZE-6 7/8 5/8 090 50/50 5/8 None 220553 BBIZE-3 5/8 5/8 AUD2 257538 3 24 28 10 258860 5/8 216428 220554 BBIZE-4 7/8 5/8 5/8 216428 220554 BBIZE-4 7/8 5/8 090 1/3-2/3 AUD3 257330 3 24 28 10 258861 5/8 None 220553 BBIZE-3 5/8 5/8 5/8 216428 234052 BBIZE-5 7/8 5/8 AUD2 257539 2 24 42
PAGE 24
Inlet Base and Discharge Plenum - Apples to CAUA Sizes 350 and 400 Model CAUA with Optional Discharge Plenum and Inlet Base 282 281 280 284 283 275 274 Discharge Plenum Model CAUA 350 or 400 302/303 Inlet Base 293 290 295 294 291 Inlet Base - Applies to CAUA Sizes 350 and 400 Screened Discharge Plenum Code Description 350/400 Screened Discharge Plenum Package (Same as Option 270 CD60) Screened Discharge Plenum with Blockoff Plates Package 271 (Same as Option CD61) Screened Discharge Plenum for