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Zehnder Rittling RW-260 Installation, Operation And Maintenance Manual

Cabinet unit heater

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Rittling
Cabinet Unit Heater
Installation, Operation and Maintenance
Heating
Cooling
Fresh Air
Clean Air
i

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Table of Contents
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Summary of Contents for Zehnder Rittling RW-260

  • Page 1 Rittling Cabinet Unit Heater Installation, Operation and Maintenance Heating Cooling Fresh Air Clean Air...
  • Page 2: Table Of Contents

    Models and arrangements Ratings Dimensions and data General information Receiving Safety considerations Unpacking and preparation Handling and installation Hot water connections Ductwork connections Electrical connections Wiring diagram Start-up Air system balancing Heating system Water system balancing Water treatment Controls operation Exposed unit touch-up Normal operation/maintenance 24 IMPORTANT: Submittal documentation, specific to...
  • Page 3: Models And Arrangements

    Cabinet Unit Heater models and airflow arrangements Wall models RW-260 RW-270 RRW-320 RW: Wall RRW: Wall, partially recessed RW-260 shown RRW-320 shown RW-280 RW-270 and RW-280 available RRWI-330 RWI-290 RWI-300 RRWI: Wall, partially recessed, inverted flow RRWI-330 shown RWI: Wall, inverted flow...
  • Page 4 Cabinet Unit Heater models and airflow arrangements Floor models Ceiling models RC-360 RF-200 RF-220 RC-370 RF: Floor RC: Ceiling RF-200 shown, RF-220 available RC-360 shown RC-380 RC-370, RC-380, RC-390 and RC-400 available RC-390 RFI-240 RFI-250 RC-400 RFI: Floor, inverted flow RFI-240 shown, RFI-250 available RRC-400 RS-200...
  • Page 5: Ratings

    Table A: Standard ratings Specifications 18.7 25.5 34.8 51.0 62.8 73.4 90.7 Steam capacity 16.2 22.4 30.7 45.5 54.8 64.5 80.1 Hot water capacity (1 row coil) 25.0 34.3 47.2 69.5 86.6 101.2 125.8 Hot water capacity 10.5 13.1 (2 row coil) High 1180 CFM: standard...
  • Page 6 Table B: Electrical ratings Unit size 1/60 1/60 1/25 1/15 1/30, 1/15 1/15 1/15 Quantity RPM high 1050 1050 1050 1050 Motor: standard RPM medium RPM low 0.35 0.35 0.68 1.13 1.73 2.26 2.26 Power input: Watts 1/12 1/12 1/10 1/12, 1/7 Quantity RPM high...
  • Page 7: Dimensions And Data

    All listed dimensions are approximate and are Louver opening centered subject to change without notice „ „ Modifications to the product specifications must be accepted by Zehnder Rittling at its base office „ „ See www.zehnder-rittling.com for any recent updates or changes Model RF Side view 7-1/4"...
  • Page 8 All listed dimensions are approximate and are subject to change without notice „ „ Modifications to the product specifications must be accepted by Zehnder Rittling at its base office „ „ See www.zehnder-rittling.com for any recent updates or changes Model RS Side view 7-1/4"...
  • Page 9 All listed dimensions are approximate and are subject Louver opening centered to change without notice „ „ Modifications to the product specifications must be accepted by Zehnder Rittling at its base office „ „ See www.zehnder-rittling.com for any recent updates or changes Models RW and RC Side view 7-1/4"...
  • Page 10 All listed dimensions are approximate and are subject to change without notice „ „ Modifications to the product specifications must be accepted by Zehnder Rittling at its base office „ „ See www.zehnder-rittling.com for any recent Models RRW, RFRW, RRC and RFRC...
  • Page 11 68-3/16 52-3/8 33-5/8 „ All listed dimensions are approximate and are subject to change without notice. Modifications to the product 76-3/16 60-3/8 33-5/8 specifications must be accepted by Zehnder Rittling at 86-3/16 70-3/8 33-5/8 its base office. Dimensions and data...
  • Page 12 Dimensions and data Outside air wall box Telescoping inner and outer aluminum box Unpainted aluminum louvered inlet grille with internal bug screen 4" to 8" 1/2" Dimensional data Model Rough opening 2 5/8" 2 13/16" WB-0203 22-1/2 x 3 WB-0406 27-1/2 x 3 WB-081012 37-1/2 x 3...
  • Page 13: General Information

    Zehnder Rittling is for shipping damage. Any not responsible for any repairs damage should be reported to...
  • Page 14: Safety Considerations

    Safety considerations The installation of Cabinet Unit All fastening devices must be Consult local building codes Heaters and all associated designed to mechanically hold and the National Electrical components, parts and the assembly in place without Code(NEC) for special accessories which make up the ability to loosen or break installation requirements.
  • Page 15: Unpacking And Preparation

    Unpacking and preparation All units are carefully inspected a clean, dry area of the building or if foreign material is allowed to at the factory throughout the in a warehouse. Do not remove any be deposited on the motor or entire fabrication and assembly equipment from its shipping package blower wheels of any unit.
  • Page 16: Handling And Installation

    Although Zehnder Rittling does not become involved condensate flow. with the design and selection of support methods and/or components, it should be recognized that...
  • Page 17: Hot Water Connections

    This is the ultimately causing a leak. responsibility of the installing or the insulation contractor. Zehnder Rittling will not accept Secure the union nut hand-tight any charges associated with and then tighten no more than an re-insulating piping if the additional 1/4 turn.
  • Page 18: Ductwork Connections

    Some models are designed to Zehnder Rittling assumes no be connected to ductwork with responsibility for undesirable a minimum amount of external system operation due to static pressure. These units...
  • Page 19: Electrical Connections

    Zehnder Rittling assumes no with the wiring diagram. Failure responsibility for any damages to do so could result in personal and/or injuries from improper injury or damage to components field installation and/or wiring.
  • Page 20: Wiring Diagram

    Wiring schematic 120V PSC MOTOR (OPTION) BLOWER WHITE WHITE MOTOR MOTOR QUICK CONNECT (OPTIONAL) DAMPER MOTOR *BROWN *BROWN TERMINATED 3-SPEED SWITCH IF NO DAMPER MOTOR CONTROL PACKAGE (OPTIONAL) (OPTIONAL) YELLOW MANUAL MOTOR WALL HEATER STARTER THERMOSTAT (OPTIONAL) AQUASTAT RETURN AIR (OPTIONAL) FAN CONTROL FAN CONTROL...
  • Page 21 Wiring schematic 208V/240V/277V PSC MOTOR (OPTION) BLOWER WHITE WHITE MOTOR MOTOR QUICK CONNECT (OPTIONAL) DAMPER MOTOR *BROWN NOTE: FOR HIGH STATIC MOTORS USE THE FOLLOWING 3 SPEED SWITCH WIRING CONFIGURATION: *BROWN TERMINATED 3-SPEED SWITCH RED/LOW - BLUE/MED - BLACK/HIGH IF NO DAMPER MOTOR CONTROL PACKAGE (OPTIONAL) (OPTIONAL)
  • Page 22: Start-Up

    Start-up general Before beginning any start- Each unit should be checked for: up, the start-up personnel Free blower wheel operation „ ■ should take the time to Loose wires „ ■ familiarize themselves with Loose or missing access „ ■ the unit, options, accessories panels or doors and control sequence to fully...
  • Page 23: Air System Balancing

    Heating system Air system balancing Prior to the water system All ductwork must be complete and start-up and balancing, the fully connected. All return and supply The air vents provided are not hot water system should be grilles, filters and access doors and intended to replace the main thoroughly flushed to clean panels must be properly installed...
  • Page 24: Water System Balancing

    Water system Water treatment balancing Proper water treatment is All Zehnder Rittling water coils a specialized industry and are constructed of copper tubes A complete knowledge of the therefore it is recommended and headers while multiple hydronic system, including its...
  • Page 25: Controls Operation

    Controls operation Before proper control operation A wide range of controls, can be verified, all other systems electrical options and must be operating properly. accessories may be used The correct water and air with the units covered in this temperatures must be present manual.
  • Page 26: Normal Operation/Maintenance

    Normal operation and General Dirt and dust should not be allowed to accumulate on Each unit on a project will periodic maintenance the blower wheel or housing. have its own unique operating Failure to keep this clean may environment and conditions result in an unbalanced wheel which dictate a maintenance condition which can lead to a...
  • Page 27 Electrical wiring & controls Valves and piping Cleanable filters Electrical operation of each unit No formal maintenance is required Cleanable filters should be is determined by the components on the valve package components inspected and cleaned on a and wiring of the unit. This may other than a visual inspection regular basis, similar to the vary from unit to unit.
  • Page 28: Replacement Parts

    Replacement parts Equipment start-up Ductwork connections Factory replacement parts should be Install ductwork, fittings and checklist „ ■ used wherever possible to maintain grilles, as required unit performance, it’s normal Flexible duct connections at „ Receiving and inspection ■ operating characteristics and its unit Unit received undamaged „...
  • Page 32 Zehnder Rittling · 100 Rittling Boulevard · Buffalo, NY USA 14220 T 716-827-6510 · F 716-827-6523 · sales@zehnder-rittling.com · www.zehnder-rittling.com...

This manual is also suitable for:

Rw-270Rw-280Rwi-290Rwi-300Rrw-320Rwi-310 ... Show all

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