NGH Reznor EUH10 Installation, Commissioning And Service Manual
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NGH Reznor EUH10 Installation, Commissioning And Service Manual

Electric unit heater
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ELECTRIC UNIT HEATER
INSTALLATION, COMMISSIONING AND SERVICING
MANUAL
These appliances meet the following directives:
The Eco design for Energy-Related Products and Energy Information (Amendment) (EU Exit)
Regulations 2020
Electromagnetic Compatibility Regulations 2016
Electrical Equipment (Safety) Regulations 2016
Supply of Machinery (Safety) Regulations 2008
Supply of Machinery (Safety) Regulations (A) 2011
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.
WARNING
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
dangerous operation possibly resulting in damage to the apparatus and/or environment in which the unit is installed.
MANUAL PART NO. D301600 ISS 0

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  • Page 1 ELECTRIC UNIT HEATER INSTALLATION, COMMISSIONING AND SERVICING MANUAL These appliances meet the following directives: The Eco design for Energy-Related Products and Energy Information (Amendment) (EU Exit) Regulations 2020 Electromagnetic Compatibility Regulations 2016 Electrical Equipment (Safety) Regulations 2016 Supply of Machinery (Safety) Regulations 2008 Supply of Machinery (Safety) Regulations (A) 2011 Please read this document carefully before commencing installation, commissioning and/or servicing.

  • Page 3: Table Of Contents

    Contents Features ............24 General Information (G) Configuration program key ......25 e+ range ............4 Fan speeds ..........25 Using this manual ........4 Temperature sensors ........25 Warranty ............4 Thermal cut-out ..........26 Important notice to installers ......5 Timer / BMS input ........26 Health and safety ........6 Door / off input ...........26 Technical Data (TD) Network data format and data protocol ..26...

  • Page 4: General Information (G)

    Warranty Range This equipment comes as standard with a General product information manufacturers two year warranty (2 years parts, 1 year labour) unless agreed otherwise The e+ range is the latest generation of at the time of order. The warranty is void if: electric unit heaters, UKCA certified to BS EN 1.

  • Page 5: Important Notice To Installers

    Improper installation, adjustment, Important notice to alteration, service, or maintenance installers can cause property damage, injury, or death. Read the Before installation, carefully read these installation, operation, and instructions and follow the processes explained maintenance instructions by the manufacturer. These instructions are thoroughly before installing or only valid for appliances designed to operate servicing this equipment.

  • Page 6: Health And Safety

    Health and safety Do not cover the heater. Ensure the air inlet and outlet are not Ensure that anchoring points are suitable for obstructed. the weight and loading of the product and if Do not install the heater near or required, add suitable reinforcement to the below a socket outlet.
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  • Page 8: Technical Data

    Technical Data Item Unit @ 415V @400V @380V Model e+ 10 - Airflow Speed F1 Maximum Heating Capacity 10.76 10.00 9.03 Maximum Heating Load per Phase 14.98 14.43 13.71 Airflow 1275 Throw m/s @ m 0.5 m/s @ 19.5m Noise @ 5m 53.0 NR Rating Maximum Fan Power...
  • Page 9 Item Unit @ 415V @400V @380V Model e+ 20 - Airflow Speed F2 Maximum Heating Capacity 21.53 20.00 18.05 Maximum Heating Load per Phase 29.95 28.87 27.42 Airflow 2250 Throw m/s @ m 0.5 m/s @ 34.1m Noise @ 5m 68.9 NR Rating Max Fan Power...
  • Page 10 EUH10 Temperature Rise vs Power Consumption, 1275m³/h Airflow (F1) ∆T °C 10.7 ∆T °C EUH10 Temperature Rise vs Power Consumption, 1500m³/h Airflow (F2) ∆T °C 10.1 ∆T °C EUH20 Temperature Rise vs Power Consumption, 2000m³/h Airflow (F1) ∆T °C 13.2 16.6 19.9 ∆T °C...
  • Page 11 EUH20 Temperature Rise vs Power Consumption, 2250m³/h Airflow (F2) ∆T °C 11.3 15.1 18.9 ∆T °C EUH30 Temperature Rise vs Power Consumption, 3000m³/h Airflow (F1) ∆T °C 10.1 15.1 20.2 25.2 30.2 ∆T °C EUH30 Temperature Rise vs Power Consumption, 3250m³/h Airflow (F2) ∆T °C 10.9 16.4...

  • Page 12: Dimensions

    Dimensions Model Unit e+ 10 e+ 20 e+ 30 Diameter Length Total width with hanging bracket Total height with hanging bracket mm Hanging bracket mounting holes 2 off 10mm diameter holes at 100mm centres Weight 20.6 21.5 24.1 10 and 20 Page No 12 of 40 Reznor, e+, Installation Manual, EN 2024-06, D301600 Iss 0...

  • Page 13: Clearance Distances

    Clearances Model Unit e+ 10 e+ 20 e+ 30 Front minimum (*1) (*2) 1200 1200 1200 Rear minimum Side minimum (*1) (*2) (*3) Above access Panel 1000 1000 1000 Minimum Mounting Height 2500 2500 2500 Maximum Mounting Height (*4) mm 5000 7000 9000...

  • Page 14: Signal Pro Display Panel Dimensions

    Signal Pro display panel dimensions The Signal Pro display panel (provided separately as part of the accessory kit) is supplied with an industry standard plastic double surface mounted socket box. Alternatively, the display panel can be flush mounted using a customer supplied metal flush conduit box. Figure 1 display panel in surface mount box Figure 1.1 surface mount box dimensions Page No 14 of 40 Reznor, e+, Installation Manual, EN 2024-06, D301600 Iss 0...
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  • Page 16: Heater Location

    Installation Heater location Uncrating / preparation This air heater must be installed Prior to crating and shipping, this unit was test and maintained in accordance operated and inspected at the factory and left in with this manual, national and full operating condition. If the unit has incurred local building regulations and local damage in shipment, document the damage health and safety regulations...

  • Page 17: Accessory Kit

    Hanging the heater 2. Lift the hanging bracket to the vertical position, slotting it in to place. Do not locate the heater where it may be exposed to water or where the ambient temperature exceeds 30°C. Ensure that the structural elements, which will be used to suspend or support the appliance, are adequate to carry the weight of...
  • Page 18 6. Lock the hanging bracket in place using the To hang the heater:- M8 screws and M8 nyloc nuts (on the inside 1. Install suitably sized and supported unistrut of the bracket) where the hanging bracket (sufficient to carry the weight of the unit) in connects to the heater.

  • Page 19: Electrical Supply

    Units require a connection to a 3 phase 380- Electrical supply. 415V, neutral and earth power supply. The The electrical installation may models consume 10kW, 20kW and 30kW only be carried out by an respectively at 400 Volts when switched to appropriately qualified person in the full heat position depending on the model accordance with the current Rules...

  • Page 20: Signal Pro Display Panel

    Any heater within the network can be Signal Pro display panel connected with and respond to the following The display panel can be installed using the optional circuits: standard double surface box supplied or • External switch (i.e. BMS enable) where recessed using a suitable flush mounted double required, to be volt free and wired in conduit box.

  • Page 21: Wiring Diagram

    Wiring Diagram Protection There are two high speed fuses on the PCB Terminal Description Cable board to protect the switching thyristors for Timer Optional external switch / BMS the heater. An external circuit breaker with the Door Optional door contact 1.5mm²...

  • Page 22: Introduction

    Controller, operation and commissioning Room Signal Pro e+ unit 1 e+ unit 2 e+ unit 3 temperature Controller sensor Screened Cable Network Cable Network Cable Network Cable Network Cable Up to a total of 16 heaters can be networked together to be controlled by one Signal Pro controller and a room temperature sensor (connected to the controller by 0.75mm screened cable).

  • Page 23: Heater Addressing

    If more than one heater is connected to the network Heater addressing then for some settings all controls can be set All heaters work on an address to communicate together or controls can be set individually. Only with the display panel and are supplied with an controls that are present on the system can be default address of ‘0’.

  • Page 24: Diagnostic Display

    3. Enable Night operation, system wide. 8. PCB temperature, Ptt = tt°C, ‘xx’ sensor out of range. 4. Enable Frost operation, system wide, fixed 5°C. 9. Limit Stat open circuit, ‘S’ = open circuit (fault, heat off). 5. Set Outlet Temperature, per heater, 1, 2 or 3 default 2 (see technical details earlier).

  • Page 25: Configuration Program Key

    • Fan Only Overtime: runs fan-only to On (day) • Heater outlet temperatures are fixed based temperature, no heating, for the number of on the heater rating, the set fan speed and hours and minutes set. If fan-only overtime the programmed heat level, as shown in the is set then if Menu is pressed the fan-only technical data tables.

  • Page 26: Thermal Cut-Out

    Thermal cut-out When the Door input is open-circuit the heater is forced off, this will override any settings from When either thermal cut-out is open circuit the the panel, including frost protection. fan output is set to maximum, 10V, and the heating is forced off although it may continue Door input only affects the heater it is to heat if the triacs or drive circuit fail, hence the...

  • Page 27: Commissioning - Handover

    Commissioning - handover If the LC3 stat has tripped it must be manually reset. A cooling time of about 3 minutes is Upon full and satisfactory completion of necessary before resetting. The LC3 reset switch commissioning, a record of commissioning is located on the top of the unit between the information and a copy of this manual should main fan assembly and the control section...

  • Page 28: General Maintenance

    Maintenance Always ensure that the electricity Fan and motor bearings are of the "sealed for supply to the heater is isolated life" type and do not require maintenance other before commencing any than replacement upon failure. maintenance on the unit heater. Removal of grille Lock and tag the isolator switch.

  • Page 29: Replacement Of Lc3 Limit Thermostat

    5. Remove the element from the unit using the 6. Disconnect the two orange cables from the reset handles on the element frame. button, insert the limit stat bulb into the black cable support conduit then pull the white cables and limit stat through the conduit to remove.

  • Page 30: Locating The Sensor Bracket And Sensors

    Locating the sensor bracket and sensors Removal of fan It is vitally important to the operation of the o remove the fan:- unit that the LC3 limit stat and thermistor bead 1. Open the heater control compartment on top are located in the correct position on the sensor of the heater.
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  • Page 32: Fault Finding (Ff)

    Fault Finding General Display panel All electric unit heaters are fitted with fuse Any fault will be described on the display panel protection and motor thermal protection. until the fault has been cleared. Faults in relation to the element, motor and There are five basic checks to perform should wiring should be identified using conventional a fault appear on the program panel display.
  • Page 33 Fault Possible Cause Remedy Thermostat calls for heat, but Blown fuse Replace fuse after checking the heater does not function cause Wiring fault Check wiring connections Thermal cut-out activated Check that the supply voltage is correct Check the control wiring is correct Check that there has not been a power supply interruption...

  • Page 34: Spare Parts (Sp) Spare Parts

    Spare Parts Description e+ 10 e+ 20 e+ 30 Axial Fan 1038556 1038651 Element Assy 1038671-S 1038672-S 1038673-S Control Board 1038558 Resistor Key 1031720 1031719 1031718 Wiring Harness 1038653 1038654 LC3 Limit Stat 1031960 03-24959 03-24959-03 Outlet Grille 1038519 Thermistor 1038737 Sensor clip set *1 1038738...

  • Page 35: Exploded View

    Exploded view e+ body assembly S clip Heater element support assembly P clamp Access cover fixed mount Cable clip for LC3 Hinged access cover panel Button head screw EC axial fan and motor Shoulder bush Electrical panel assembly M8 form A Heater element M8 rubber washer Pivot bracket left...
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  • Page 38 Page No 38 of 40 Reznor, e+, Installation Manual, EN 2024-06, D301600 Iss 0...
  • Page 39 Notes...
  • Page 40 NORTEK GLOBAL HVAC (UK) LTD Fens Pool Avenue Brierley Hill West Midlands DY5 1QA United Kingdom Tel +44 (0)1384 489700 Fax +44 (0)1384 489707 reznorsales@nortek.com www.reznor.eu NORTEK GLOBAL HVAC 662 rue des Jonchères Bâtiment N 69730 GENAY FRANCE Tél. 33 (0)4 72 26 50 40 Email : gazindustrie@nortek.com www.gazindustrie.eu NORTEK GLOBAL HVAC Belgium nv...

This manual is also suitable for:

Reznor euh20Reznor euh30

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