Reznor RHCLN Installation, Commissioning, Servicing
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Reznor RHCLN Installation, Commissioning, Servicing

Reznor RHCLN Installation, Commissioning, Servicing

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RHCLN Manual BE (Eng) V2 – 300517
RHCLN
Installation
Commissioning
Servicing
These appliances meet the following EC Directives
DIR CE 2009/142/EC:GAD
DIR CE 2014/30/EU: EMC
DIR 2014/35/EU: LVD
WARNING
Please read this document carefully before commencing installation commissioning and/or servicing. Leave
it with the user or attached to the appliance or gas service meter after installation
Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death.
All work must be carried out by appropriately qualified persons.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the
connection of the apparatus causing a harmful operation possibly resulting in damage to the apparatus and/or
environment in which the unit is installed.

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  • Page 1 RHCLN Manual BE (Eng) V2 – 300517 RHCLN Installation Commissioning Servicing These appliances meet the following EC Directives DIR CE 2009/142/EC:GAD DIR CE 2014/30/EU: EMC DIR 2014/35/EU: LVD WARNING Please read this document carefully before commencing installation commissioning and/or servicing. Leave it with the user or attached to the appliance or gas service meter after installation Improper installation, adjustment, alteration, service, or maintenance can cause property damage, injury, or death.
  • Page 2   2 ...

  • Page 3: Table Of Contents

    Page Page 1 INTRODUCTION 4.2.3 Fitting Combustion Air Inlet For Type C Basic Information Electrical Connections Warranty Room Thermostat Siting Disposal Information 5 COMMISSIONING & TESTING 2 TECHNICAL DATA Preparing For First Start-up Identification Recommended Operating Cycle Dimensional Data & Weights Electrical Check Efficiency vs Output Gas Connection...

  • Page 4: Introduction

    1  1.1 Basic Information The instructions within this manual apply to RHCLN gas fired heater modules. These models are designed for use within air handling units (AHU) or ducting systems where an air moving fan is present. The appliances must be installed in accordance with the rules in force. Before installation, check that the local distribution conditions, nature of gas and pressure and adjustment of the appliance are compatible.

  • Page 5: Warranty

    However, in some applications, about 30 seconds after the call for heat, the fan control relay will activate the fan motor of the air handler. The normal operation of RHCLN will then operate as follows: upon call for heat the pre-mix gas burner fan (1) introduces the optimal combustion air/gas mixture - dependent upon the modulating valve firing rate (2).

  • Page 6: Technical Data

    1.3 Disposal Instructions For disposal methods, refer to the local laws in force relating to special waste. The unit contains electronic components, therefore cannot be treated as household waste. For disposal methods, refer to local laws in force relating to special waste. TECHNICAL DATA ...

  • Page 7: Dimensional Data & Weights

    2.3 Efficiency vs Output   The RHCLN has been designed for the heating of buildings. It features a variable heat output with constant burner modulation, automatically controlled a 0÷10V signal (by others). This ensures a fast pre-heating of the space as well as maintaining the required temperature without any significant variance.
  • Page 8 Shown in the charts below are the internal pressure drop (∆p) and temperature rise (∆t) of the appliance when a given air volume (V) is passed through the unit. Please note that temperature rise is based upon maximum heat output. RHCLN 30 How to use the above chart Assuming an approximate air volume of 2,750 m³/h, there is:- An internal pressure drop of approx.
  • Page 9 RHCLN 40 RHCLN 50   RHCLN 60 9 ...

  • Page 10: General Information

    RHCLN 90 RHCLN120 GENERAL INFORMATION  3  3.1 General It is important that all gas appliances are installed in accordance with the rules in force and by appropriately qualified persons. Failure to install appliances correctly could lead to prosecution. It is in your own interest and that of safety to ensure compliance with the law.
  • Page 11 If the heater is installed in the horizontal plane (i.e with airflow passing right to left or left to right)  IT IS MANDATORY to place the appliance in a level or slightly tilted position towards the  If the installation is with a vertical air flow (up to down) IT IS MANDATORY to install the appliance  slightly tilted towards the condensate outlet (see below).  For correct installation the unit must:  Have minimum safety distances around the appliance, to enable unrestricted airflow & to allow normal cleaning, control and maintenance operations.  Keep minimum clearance distances to flammable materials.  Allow easy connection and correct run of the flue exhaust system. ...

  • Page 12: Burner Configuration

    3.2 Burner Configuration The appliance is capable of being used in three different configurations. The default configuration for air flow passing from right to left (when looking at the burner). Should you wish an alternative to the default configuration, then please following the instructions against the relevant configuration shown below.
  • Page 13 Horizontal airflow from left to right    The temperature probe  and deflector  must be placed on the outlet side of the heated air (right side looking at the burner) The condensate siphon  must be placed on the left side of the burner (as per default set-up).
  • Page 14 Two burners stacked – vertical airflow If changing airflow configuration from the default, please remember to make temperature probe & deflector changes on each burner as detailed in the single burner configuration examples. CONDENSATE siphon MUST be modified when using vertical configuration. See single burner configuration for details Two burners mounted in series  ...

  • Page 15: Supply Air Fan Position

    Two burners mounted in series vertically  Please ensure the 200mm minimum distance between heaters is adhered to.  If changing airflow configuration from the default, please remember to make temperature probe & deflector changes on each burner as detailed in the single burner configuration examples.

  • Page 16: Inserting Into Air Handling Unit

    Clearance for nearby components All components (fans, motors, filters, electrical wires, electric components, etc.) contained with an air handling unit, or ducting system into which the heating module is inserted, must be placed at a distance to protect from heat radiation especially in case of fan failure where heat will still build within the heater until the thermal protection switch activates.

  • Page 17: Maintenance Clearance

     The base of the air handling unit onto which the heating section is mounted, must be solid and able to support its weight. The use of suitable structural/stiffening crosspieces is therefore recommended.  The gas burner section must be securely fixed within the air handling unit to ensure no movement occurs during transportation of the complete unit.

  • Page 18: Combustion Air Supply & Flue

    C appliance. Model RHCLN heaters may be installed as type B or type C  The flue must be in accordance with BS6230 or BS5440. Local requirements may apply installation. The heaters are designed to operate safely and efficiently with in addition to national requirements.
  • Page 19 Condense drain  A condensation drain must be fitted to both the unit and the flue outlet to properly drain all condensation.  The condensation drain from the flue must be constructed from non‐corrodible material not less than 20mm diameter. Copper or copper based alloys must not be used for condensation drain.

  • Page 20: System

    20mm is used, however care must be taken to ensure that the disposal system is suitably sized to handle the volume of condensate produced, especially if more than one RHCLN module is connected. 20 ...

  • Page 21: Electrical Supply

    3.9 Gas supply RHCLN air heaters are designed to operate on either natural gas (G20) or propane (G31) / butane (G30) gas. Refer to the specifications in section 2 of this document and to the data plate for details of supply pressures.

  • Page 22: Installation

    The gas meter and gas service must be checked by the supply undertaking to ensure that they are adequate to deal with the total load of all gas fired apparatus installed. Connection to a gas service may only be carried out by appropriately qualified persons. The gas installation must comply with the rules in force using materials appropriate for gas installations.

  • Page 23: Fitting The Flue

    4.2.1 Fitting The Flue Pipe Flue pipes must be sealed. Use seamless, aluminum or stainless steel pipe as supplied by your Reznor distributor or equivalent. Follow pipe manufacturer's instructions 4.2.2 INSTALLING A GRILLE ON THE COMBUSTION AIR INLET PIPE FOR...

  • Page 24: Room Thermostat Siting

    (not time controlled) electrical supply is connected to the heater. In order for the supply air fan to run on at the end of a heating cycle, it is essential that the fan is inter-locked electrically to the RHCLN.

  • Page 25: Gas Connection

    The electronic control within the RHCLN will supervise the flame during the entire heating cycle to ensure safe operation. The following checks should be carried out before attempting to light the air heater.

  • Page 26: Service & Maintenance

     Enable burner operation at maximum output.  Connect a pressure gauge to the input pressure intake (see below)  Check that the supply gas pressure is stable and that the burner pressure corresponds to the appliance rating plate.  Stop the unit and make sure that the pressure does not change.

  • Page 27: Component Identification

     Check that the condensate discharge trap works correctly. Pre‐mix burner components  Check that the safety devices have not tripped. 1. Ignition electrode  2. DC brushless fan  3. Gas‐air control gas solenoid  valve  4. Mixer  5. Ionization electrode  6. Burner plate with thermal  insulation  7. Burner firing tube  8. Gas inlet    inspections mentioned above must carried out in all operating conditions (max...

  • Page 28: Burner/High Limit Reset

    Do not use screwdrivers or sharp tools to reset the multifunctional board. 6.3 Burner Fan Settings The appliance is adjusted at the point of manufacture with the rotation speed shown in the following table: RHCLN 30 RHCLN 40 RHCLN 50 TSP PARAMETER...

  • Page 29: Multifunctional Led

    1. Multifunctional LED The RHCLN is able to signal, via the multi-coloured LED, its operating conditions or the presence of some faults. The following figure displays the possible combination of colours, shown by the LED. Stand-by Pre-ventilation Starting Reduced speed at start-up...

  • Page 30: Combustion Analysis

    For optimal operation of the appliance, ensure that the values of carbon dioxide (CO ) contained within the flue gases are close to the figures shown in the following chart. Reference chart for carbon dioxide [%] and flue gas temperature [°C] RHCLN 30 RHCLN 40 RHCLN 50 COMBUSTION POWER [°C]...

  • Page 31: Cleaning The Condense Drain

     Remove the two profile seals 2 with the screws 1;  Remove the inspection panel 4 with the screws 3;  Remove the inspection door 6 with the screws 5, making sure not to damage the gasket 7;  Via the flue manifold 9, inspect the exchanger elements and if needed, clean and remove any residue using compressed air and/or chemical systems;...

  • Page 32: Cleaning The Electrodes

    Gas Conversion 7  RHCLN models are supplied, as standard, to operate on natural gas (G20). Kits are available for converting the unit for operation on propane gas (G31). This conversion must be performed only by appropriately qualified personnel. Conversion can be also be carried out also after the unit has been installed.
  • Page 33 The gas conversion kit includes a self-adhesive label which, once the conversion has been completed, MUST be applied over the original label. The new label shall completely cover the previous one, so that no doubts can arise about equipment configuration. Conversion date Type of conversion gas Performed by RHCLN Manual BE (Eng) V2 – 300517 33 ...
  • Page 34 8930 Menen Belgium Tel. +32 (0)56 52 95 11 www.reznor.eu Nortek Global HVAC is a Registered in England No. 01390934 | Registered Office The Colmore Building, Colmore Circus Queensway Birmingham B4 6A registered trademark of the Nortek Global HVAC Limited. Because of continuous product innovation. Nortek Global HVAC reserves the right to  ...

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