Reznor CAUA Unit Installation Manual Manuale Utente Pagina 1

Form I-CAUA, P/N 164771 R8, Page 1InstallationApplies to: Model CAUA, Gas-Fired, Indoor, Vertical (Upow), Power-Vented HeaterForm I-CAUA (Versio

Form I-CAUA, P/N 164771 R8, Page 103) Pipe Diameter and LengthPipe diameter and length requirements listed in TABLE 7 are for the indoor sections of p

Form I-CAUA, P/N 164771 R8, Page 116) SupportSupport horizontal runs every six feet (1.8M). Support vertical runs of Category III vent pipe in accorda

Form I-CAUA, P/N 164771 R8, Page 12FIGURE 5 - Concentric Adapter Box Description, Dimensions, and Airow

Form I-CAUA, P/N 164771 R8, Page 13

Form I-CAUA, P/N 164771 R8, Page 146.2.1.1 HORIZONTAL Vent InstructionsComponents Required - Factory and FieldTABLE 9 - Parts in Option CC6, Horizont

Form I-CAUA, P/N 164771 R8, Page 15FIGURE 7 - Brackets for Attaching the Concentric Adapter Box to the Wall

Form I-CAUA, P/N 164771 R8, Page 16

Form I-CAUA, P/N 164771 R8, Page 17TABLE 11 - Parts in Option CC2, Vertical Vent Terminal/Combustion Air Package Components Required - Factory and Fie

Form I-CAUA, P/N 164771 R8, Page 18FIGURE 10 - Assemble Concentric Adapter Box, Outdoor Combustion Air Pipe, and Double-Wall Vent Pipeb. Attach the ou

Form I-CAUA, P/N 164771 R8, Page 19SECOND, Install the Exhaust (Vent) Terminal. Follow the instructions in FIGURE 4A, page 11.FIRST, Install Combustio

Form I-CAUA, P/N 164771 R8, Page 2WARNING Gas-red appliances are not designed for use in hazardous atmospheres containing ammable vapors

Form I-CAUA, P/N 164771 R8, Page 206.2.2 Venting and Combustion Air Requirements for Power Vent Drawing Combustion Air from THE INSIDE SPACE and Venti

Form I-CAUA, P/N 164771 R8, Page 213) Vent Pipe Diameter and Length NOTE: If the system contains all vertical pipe or a combination of horizontal and

Form I-CAUA, P/N 164771 R8, Page 22Use non-combustible supports on vent pipe. Support horizontal runs every six feet (1.8M). Support vertic

Form I-CAUA, P/N 164771 R8, Page 23Horizontal Vent Terminal ClearancesA vent cap is required. Maintain a clearance of 12" (305mm) from the wall t

Form I-CAUA, P/N 164771 R8, Page 246.3 Inlet Air7) Vent Terminal (Pipe and Vent Cap) (cont'd)6.0 Mechanical (cont'd)6.2 Venting and Combusti

Form I-CAUA, P/N 164771 R8, Page 256.3.1 Filter Cabinet, Option CW (return air only)A side or rear lter cabinet designed for 2" pleated

Form I-CAUA, P/N 164771 R8, Page 266.3.2 Outside Air and Return Air Mixing Box, Option GA 6.0 Mechanical (cont'd)6.3 Inlet Air (cont'd)6.3.1

Form I-CAUA, P/N 164771 R8, Page 27FIGURE 20 - Dimensions of Optional Mixing Box - inches (mm)

Form I-CAUA, P/N 164771 R8, Page 28Attach to t

Form I-CAUA, P/N 164771 R8, Page 296.4.2 Discharge, Plenum, Option CD (Sizes 350 and 400 only)The optional discharge plenum is designed to be used wit

Form I-CAUA, P/N 164771 R8, Page 31.4 WarrantyRefer to the limited warranty information on the Warranty Form in the "Owner's Enve-lope"

Form I-CAUA, P/N 164771 R8, Page 306.0 Mechanical (cont'd)Direct Drive MotorsTABLE 22 - Direct Drive Motor WiringCAUA SizesSpeedUse these two mot

Form I-CAUA, P/N 164771 R8, Page 316.6 Cased Cooling Coil, Model ACUA, ACUB, or ACUC or Option CThis cased cooling coil is designed for use with the

Form I-CAUA, P/N 164771 R8, Page 326.0 Mechanical (cont'd)Bulb at 3 o’clockBulb at 4 o’clockBulb at8 o’clockBulb at 9 o’clock12369Position bulb f

Form I-CAUA, P/N 164771 R8, Page 33Condensate Drain TrapThe design of the drain trap is important. If dimension "B" in FIGURE 26A is not tal

Form I-CAUA, P/N 164771 R8, Page 34a) Assemble the brass nut, the sealing washer, and the 90° tting.b) Position the threaded tting up through th

Form I-CAUA, P/N 164771 R8, Page 35TABLE 26- Motor AmpsFull Load Amps (per motor) - Blower MotorsHP 1/3 1/2 3/4 1 1-1/2 2 3 5Direct Drive Motors208/23

Form I-CAUA, P/N 164771 R8, Page 36FIGURE 29B - Wiring Diagram with Single-Stage Gas Control and Direct Drive Blower Motor7.0 Electrical and Wiring (c

Form I-CAUA, P/N 164771 R8, Page 37FIGURE 29C - Wiring Diagram with Two-Stage Gas Control and Belt-Driven Blower Motor

Form I-CAUA, P/N 164771 R8, Page 387.4.1 Combustion Air Proving SwitchThe combustion air proving switch is a pressure sensitive switch that monitors a

Form I-CAUA, P/N 164771 R8, Page 39If there is a remote console (Option RC_) and there is a dirty lter indicator light on the console, there is a dir

Form I-CAUA, P/N 164771 R8, Page 4Shipped-Separate Accessories3.0 Receiving, Uncrating, and Preparing for InstallationThis unit was test operated a

Form I-CAUA, P/N 164771 R8, Page 409.1 Check the installation prior to startup:Check clearances from combustibles. Requirements are in Paragraph 4.

Form I-CAUA, P/N 164771 R8, Page 414. Models CAUA 150 and 200 - Locate the gas control (ON/OFF) knob on the gas valve. Turn the gas control knob clock

Form I-CAUA, P/N 164771 R8, Page 42exhausts, so they shall operate at maximum speed. Do not operate a summer exhaust fan. Close replace dampers.4. Li

Form I-CAUA, P/N 164771 R8, Page 43INDEXAAccessories 4BBelt Drive 30Belt Tension 29Adjusting Blower Speed 29, 30Bottom Filter Cabinet 26Brackets

Form I-CAUA, P/N 164771 R8, Page 44www.ReznorHVAC.com;(800) 695-1901©2014 Reznor LLC, All rights reserved.Trademark NOTES: Reznor® is registered in at

Form I-CAUA, P/N 164771 R8, Page 5Other shipped-separate options could include a gas shutoff valve, a thermostat, a ther-mostat guard, and/or a vent c

Form I-CAUA, P/N 164771 R8, Page 6Vibration Isolation Pads, Option PC44.0 Clearances and Dimensions (cont'd)Determine the position of the heater

Form I-CAUA, P/N 164771 R8, Page 7TABLE 4 - Sizing a Gas Supply LineCapacity of Piping - Cubic Feet per Hour based on 0.3" w.c. Pressure DropSpe

Form I-CAUA, P/N 164771 R8, Page 86.2 Venting and Combustion AirWARNINGThe vent must be installed in accordance with national and local regulatio

Form I-CAUA, P/N 164771 R8, Page 9Installation should be done by a qualied agency in accordance with these instruc-tions. The qualied serv