Reznor Comet+ User Manual
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Reznor Comet+ User Manual

Floor standing warm air heater
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FLOOR STANDING WARM AIR HEATER
INSTALLATION / COMMISSIONING / SERVICE /
Gas Appliances (Product Safety and Metrology etc (Amendment etc)
Please read this document carefully before commencing installation, commissioning and/or servicing.
Leave it with the end user/site agent to be placed in their premises technical file after installation.
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the
connection of the apparatus causing a dangerous operation possibly resulting in damage to the apparatus and/or environment
Manual Part No. D301518 Issue 0
®
Comet+ (Gas & Oil)
USER MANUAL
Supply of Machinery (Safety) Regulations 2008
Supply of Machinery (Safety) Regulations (A) 2011
Electrical Equipment (Safety) Regulations 2016
Electromagnetic Compatibility Regulations 2016
(EU Exit) Regulations 2019)
WARNING
All work must be carried out by appropriately qualified persons.
in which the unit is installed.
ErP Lot 21
ErP
Seasonal Efficiency and
2021
NOx compliant

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  • Page 1 ErP Lot 21 ® Seasonal Efficiency and 2021 NOx compliant FLOOR STANDING WARM AIR HEATER Comet+ (Gas & Oil) INSTALLATION / COMMISSIONING / SERVICE / USER MANUAL Supply of Machinery (Safety) Regulations 2008 Supply of Machinery (Safety) Regulations (A) 2011 Electrical Equipment (Safety) Regulations 2016 Electromagnetic Compatibility Regulations 2016 Gas Appliances (Product Safety and Metrology etc (Amendment etc)
  • Page 2 PAGE 2 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 3: Table Of Contents

    Flue System ............20 User Instructions Gas Installation and Connection ......25 User Instructions ..........41 Oil Installation/Connection ........25 Ducted Models ..........28 Nozzled Models ..........29 Condensate Drains ..........29 Electrical Installation/Connection .......29 Controls ............31 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 3...

  • Page 4: Product Introduction

    Installation should be carried out by a suitably qualified installer in accordance with these instructions and the current rules and regulations in force. The installer is responsible for the safe installation of the heater. PAGE 4 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 5: Health And Safety

    Personal Protective Equipment. Enter your gas emergency number below This manual should be kept in a safe place for future reference. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 5...

  • Page 6: Before Using This Appliance

    • Ensure that the burner manual is burner operation. available. PAGE 6 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 7: General Requirements

    The air heaters are designed for mounting will jeopardise any applicable directly on the floor and do not need any warranty. fixing. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 7...

  • Page 8: Electrical Supply

    Ensure that wiring cannot make contact with any surfaces liable to be subject to high temperatures or where the insulation of the wiring could be impaired as a result of such contact. PAGE 8 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 9: General

    • Close the main fuel supply carried out in accordance with regulations valve. & standards applicable to the country of use and in accordance with the manufacturers instructions. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 9...

  • Page 10: Disposal Instructions

    PAGE 10 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 11: Installers Responsibilities

    Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 11...

  • Page 12: Warranty

    • The heater has not been operated or • Electromagnetic Compatibility used within the normal scope of its Regulations 2016 intended application. • Gas Appliances (Product Safety and Metrology etc (Amendment etc) (EU Exit) Regulations 2019) PAGE 12 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 13 It should not be used for closing down the main burner as it switches off the fan prematurely and may damage the heat exchanger, invalidating the warranty. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 13...

  • Page 14: Technical Data

    Heaters with a standard internal cabinet are suitable for internal use only. Heaters with an external enclosure (EX) are suitable for external or internal use. Kerosene variants are only available up to model 150 PAGE 14 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 15 Nominal Flue Diameter (mm) Noise Level @ 5m dB(A) Net Weight (kg) Natural Gas @ 38.52 MJ/m³ Propane @ 93.2 MJ/m³ Oil @ 39.06 MJ/I I Kerosene 43.10 Mj/kg Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 15...

  • Page 16: Dimensions

    R - Duct Outlet 1000 S - Condensate Size (if fitted) 3/4” 3/4” 3/4” 3/4” 1” 1” 1” Note: Condensate connections are provided at high efficiency condensing versions of the heater only PAGE 16 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 17 Models with nozzled outlet Models with ducted outlet Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 17...

  • Page 18: Installation

    It is strongly advised that when positioning the heater the lifting eyes are used, thereby reducing the risk of inadvertent damage being occasioned to the heater. PAGE 18 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 19: Installation Considerations

    • Be close to a suitably sized electrical stored or parked, where cellulose supply; spraying takes place, where woodworking machinery is being • Allow for easy maintenance and operated, etc.). inspections; Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 19...

  • Page 20: Clearances And Access

    (see diagram on page 24) when installed according to the specific requirements and instructions herein. PAGE 20 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 21 3. The flue must be of a type acceptable to vented Type B installation requires current standards. ventilation of the heated space. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 21...
  • Page 22 25 mm air break. The temperature of any combustible material near to the flue must not exceed 65°C when the heater is in operation. PAGE 22 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 23 Note: When the flue outlet is at a horizontal distance greater than 10 times the height of the parapet or structure, the terminal outlet height need be only 250mm above the roof. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 23...
  • Page 24 PAGE 24 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 25: Gas Installation And Connection

    Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 25...
  • Page 26 PAGE 26 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 27 Figure 1 Pressurised oil feed system 1. Gate valve 2. In-line filter 3. Pump 4. Relief valve 5. Pressure gauge 6. Pressure reducing valve 7. Return to tank Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 27...

  • Page 28: Ducted Models

    A full and unobstructed return air path to the air heater must be provided. PAGE 28 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 29: Nozzled Models

    Always isolate from the designed and sized condensate disposal mains electrical supply before system. The condensate connection is at the commencing work on the heater. rear of the heater. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 29...
  • Page 30 Always ensure that the appropriate personal the power supply (phase - neutral) and protective equipment is used. make sure that the direction of rotation of the fans is correct. PAGE 30 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 31: Controls

    A 15 minute supply fan over run on burner work on this appliance. shutdown MUST be provided. For ON/OFF control only, omit 3 pin burner plug. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 31...

  • Page 32: Commissioning

    PAGE 32 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 33 Up to 100ppm from the fan limit side of the Typically 20 ppm thermostat. Set the over heat to 20°C Flue stack temp Up to 250°C above the running temperature. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 33...

  • Page 34: Unit Operation

    The limit control provides protection for the heater should the temperature rise above a safe level. PAGE 34 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 35 Fig 3 Overheat reset Fig 4 Overheat position Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 35...

  • Page 36: Maintenance

    Refer to the separate burner manual mounting flange and remove gas train supplied with the heater. assembly. 4. Remove four fixing screws holding burner to heater side and lift away burner. PAGE 36 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 37: Heat Exchanger Maintenance

    • Check the tightness of the motor bolts. • Inspect and adjust electrical connections. • Check all wiring and tube connections. • Remove the burner inner assembly – clean and replace. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 37...

  • Page 38: Removal And Replacement Of Parts

    • Stillsons – 14” and 18” • Allen keys – standard metric set, 1.5mm – 10mm • Side cutters/pliers • Multi-meter • Manometer • Flue – brush 3” head for exchanger tubes PAGE 38 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 39: Spare Parts

    Relays Toggle switch Red indicator Green indicator Orange indicator Please refer to the separate burner manual supplied with the heater for details of the spares associated with the burner. Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 39...

  • Page 40: Trouble Shooting

    Check if motor is held off by an overload condition Please refer to the separate burner manual supplied with the heater for details of the fault finding / trouble shooting regimes associated with the burner. PAGE 40 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...

  • Page 41: User Instructions

    1. Gas/fuel oil supply not turned on instructions can result in death, injury or property damage. 2. Electrical supply not turned on 3. Timer and/or thermostat is not calling for heat Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 41...
  • Page 42 6. Lockout should not occur during normal operation of the heater. If it does, it indicates that there is a fault condition which must be corrected. PAGE 42 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0...
  • Page 43 Notes Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 43...
  • Page 44 Tel 01384 489700 Fax 01384 489707 reznorsales@nortek.com www.reznor.eu Nortek Global HVAC is a registered trademark of the Nortek Global HVAC limited. Because of the continuous product innovation, Nortek Global HVAC reserves the right to change product specification without due notice.

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