Kaden KEX Series Installer Manual

Ducted gas heaters
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INSTALLER'S
MANUAL
Ducted Gas Heaters
Safety Information
Installation
Commissioning
Models
Universal:
KUN3 | KUN4 | KUN5
External
KEX3 | KEX4

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Summary of Contents for Kaden KEX Series

  • Page 1 INSTALLER’S MANUAL Ducted Gas Heaters Safety Information Installation Commissioning Models Universal: KUN3 | KUN4 | KUN5 External KEX3 | KEX4...
  • Page 2: Table Of Contents

    Return & Supply Air POP Rotation Procedure .................. 13 2.3.3 2.3.4 Internal Model Flueing Instructions ....................14 2.3.5 Kaden Remote Flue Terminal ......................14 External Installation ............................15 2.4.1 Supply Air Overheat Switch Position (KUN530 & KUN330 ONLY) ........... 15 Modifying KUN Model Duct Orientation ..................... 15 2.4.2...
  • Page 3 Fan Speed KUN3, KEX3 & KEX4 Fan Speed Setting For KUN3, KEX3 & KEX4 Models .................. 24 To Adjust The Fan Speed ........................24 5.1.1 Ducting Information Minimum Recommended Return Air Grille Selection Chart ................25 Outlet Guide Outlet Register Chart ............................. 27 Wall Control Installation Networker Installation KUN4 &...
  • Page 4: Warnings And Important Information

    Children should be supervised to ensure that they DO NOT play with the appliance. The Kaden Networker controller is used as a Wired Wall Thermostat and is also the interface to set Installer Parameters and obtain diagnostic information on the Kaden KU4 and KU5 Ducted NOTE Gas Heaters.
  • Page 5 The manufacturer cannot guarantee compatibility and support for anyone using 3rd party accessory/devices (device) on any of their appliances. NOTE The suitability, compatibility or functional performance of any 3rd party device is entirely the responsibility of the device’s supplier or installer. Any 3rd party device, technical, installation, operation, performance or other enquiries need to be referred to the device’s supplier or installer.
  • Page 6: Scope

    Ducted Gas Heaters SCOPE This Installer’s Manual is intended to be used as a guideline for the installation of Kaden Gas Fired Central Heaters. It covers only the installation and commissioning of the heater and the allowable flueing configurations. Although recommended return air grilles and allowable duct outlet quantities are specified, it does not cover the actual ducting design required to suit the installation.
  • Page 7: General Guidelines

    1. GENERAL GUIDELINES Kaden heaters are designed to provide a central source of heat for a ducted central heating system. Kaden heaters should not be installed downstream from an air washer, an evaporative cooler or refrigerative cooling system. Nor are they designed to be installed on a marine craft, houseboat, or any similar environment.
  • Page 8: Gas Inlet Connection

    • The connection point for all Kaden model heaters is a female G3/4 compression fitting to AS 3688. For KEX models this is located at the base of the heaters outer cabinet, and for KUN models the gas feed tube is supplied loose in the control compartment and MUST BE fitted to suit the installation.
  • Page 9: Heater Positioning

    NOTE INSTALLATION OF INTERNAL HEATERS All Kaden Universal models are primarily designed to be installed in the roof or beneath the floor. This must be done in accordance with the following guidelines and AS/NZS 5601. 1.8.1 Installing in the Roof Space •...
  • Page 10: Installation Of Internal Heaters - Room, Enclosure Or Plant Room

    NOTE 1.10 EXTERNAL INSTALLATIONS Kaden KEX3 & KEX4 External, KUN3, KUN4 & KUN5 Universal models can be installed outside of the house. For an installation under a house floor, a KUN3, KUN4 or KUN5 Universal model should be chosen. All heaters that are installed externally on the ground should be installed on a level concrete base or pad, and there must be provision made to drain away any surface water from the heater.
  • Page 11: Kun Universal Model Guidelines

    2. KUN UNIVERSAL MODEL GUIDELINES HEATER DIMENSIONS Ø Ra Ø Sa Model ØSa ØRa KUN521 1046 KUN530 1096 KUN415 KUN420 KUN425 KUN430 KUN315 KUN320 KUN325 KUN330 All dimension in mm Diagram 1 PLATFORM & SERVICE CLEARANCES Internal Minimum Service External Clearance Method 1 Method 2...
  • Page 12: Internal Installation

    Kaden Installer's Manual Ducted Gas Heaters INTERNAL INSTALLATION 2.3.1 Splitting the Heater The KUN model heaters can be split for ease of installation. To split the heater, follow these simple instructions. Remove the heater’s roof after removing the roof screws.
  • Page 13: Return & Supply Air Pop Rotation Procedure

    2.3.3 Return & Supply Air POP Rotation Procedure For KUN model heaters the return air POP can ONLY be changed from the front side to back side. The supply air POP can be changed from front to back or end of heater (refer to Diagram 3 page 12). 2.3.3.1 All KUN3, KUN4 &...
  • Page 14: Internal Model Flueing Instructions

    In specific installations, for example under the floor, it is recommended that a remote terminal be used to terminate the flue on the outside wall of the building. Please refer to instructions supplied with a Remote Flue Terminal (KADEN PART NO. 1621343). Diagram 4 depicts a typical KUN series heater underfloor configuration.
  • Page 15: External Installation

    EXTERNAL INSTALLATION 2.4.1 Supply Air Overheat Switch Position (KUN530 & KUN330 ONLY) For external installations of the KUN530 (refer to Diagram 5) and KUN330 (refer to Diagram 6) heaters the supply air overheat switch position must be changed from end discharge to side discharge modify as follows: 2.4.1.1 KUN530 Disconnect the quick connect terminals (Orange / White) for the overheat switch loom connected from the end discharge overheat switch behind the burners.
  • Page 16: Installation Of Flue Terminal

    The flue terminal for KUN series heaters is not supplied, and MUST BE ordered separately when a KUN series heaters is 1621303). to be installed externally (KADEN PART NO. flue outlet socket is located on the fan cabinet end of the heater. •...
  • Page 17: Installation Of Flashing

    NOTE 2.4.6 KUN3 & KUN4 models For installation of flashing refer to the instructions provided with the flashing kit. KUN315, KUN320, KUN325, KUN415, KUN420 & KUN425 use Kaden Part No. 1621299 NOTE KUN330 & KUN430 use Kaden Part No. 1621300...
  • Page 18: Thermistor Installation Kun4 & Kun5

    Kaden Installer's Manual Ducted Gas Heaters 2.4.7 Thermistor Installation KUN4 & KUN5 All KUN4 and KUN5 heaters are supplied with a remote thermistor assembly. The thermistor must be installed in the supply air duct, between 1m to 3m away from the heater, but NEVER beyond the first Branch Take Off (BTO) fitting.
  • Page 19: Kun4 & Kun5

    3. KUN4 & KUN5 KUN4 & KUN5 heaters can be configured for adaptive zoning and / or Add-On Refrigerative Air Conditioning. There are four 24 VAC relays on the PCB control module, which can be configured either for four zone motors, or for four zone motors and an add-on refrigerative air-conditioning control, refer to Diagram 10 below.
  • Page 20: Damper Motor Connections

    Kaden Installer's Manual Ducted Gas Heaters 3.1.1 Damper Motor Connections All KUN4 and KUN5 series gas ducted heaters come with four RJ12 socket connectors preconfigured for Belimo ® 24V damper motors. 3.1.2 RJ Socket Connections The plastic cover on the PCB includes moulded cut-outs to enable access to the RJ12 socket. For each socket to be used, press out and remove the cut-out and connect the RJ plug from the Belimo damper motor.
  • Page 21: Kex External Model Guidelines

    4. KEX EXTERNAL MODEL GUIDELINES HEATER DIMENSIONS Ø Sa Ø Ra Base Model ØSa ØRa KEX315 1145 KEX320 1145 KEX328 1030 1280 KEX415 1145 KEX420 1145 KEX428 1030 1280 All dimension in mm Diagram 13 SERVICE CLEARANCES Minimum Service Clearance 500mm A = Front 300mm...
  • Page 22: Installation

    Kaden Installer's Manual Ducted Gas Heaters INSTALLATION 4.3.1 Area to Cut Out in Wall When installing the heater at ground level, Wall cut-out areas create one rectangular hole to suit the total POP width and height, all the way to ground...
  • Page 23: Installation Of Flue Terminal

    4.3.3 Installation of Flue Terminal The flue terminal for KEX series heaters is supplied with the heater beneath the lid and above the fan cabinet. Remove and fit to the flue outlet socket located on the fan cabinet end of the heater.
  • Page 24: Fan Speed Kun3, Kex3 & Kex4

    Kaden Installer's Manual Ducted Gas Heaters 5. FAN SPEED KUN3, KEX3 & KEX4 FAN SPEED SETTING FOR KUN3, KEX3 & KEX4 MODELS There are three fixed fan speed options available on KUN3, KEX3 and KEX4 models, these are: • High - “HIGH”...
  • Page 25: Ducting Information

    6. DUCTING INFORMATION Good duct design and sizing are essential to every Kaden Central Heating system. Use the Kaden Size Guide and technical data within this manual for the best results and follow these guidelines: • Ductwork should be well insulated and airtight and have a minimum insulation rating of R1.0 (R1.5 in some areas).
  • Page 26: Outlet Guide

    The "Outlet Register Chart" Table 6 located on page 27 is a guide only and the system's minimum airflow requirements shall be met to ensure reliable operation. The figures are based on using the Kaden Sizing Guide or a system designed using accepted design principles. These figures also relate to typical size registers and diffusers used on domestic heating systems i.e.
  • Page 27: Outlet Register Chart

    Airflow figures are based on a total static pressure of 125 Pa for 30 & 35 models and 50 Pa for other models. NOTE Kaden Network 516 modules can only be used on KUN4 and KUN5 model heaters for adaptive zoning.
  • Page 28: Wall Control Installation

    8. WALL CONTROL INSTALLATION Kaden heating systems can be controlled by various Kaden Wall Controls. The Wall Control is located inside the house and is wired directly to the heater. The wall control monitors the house temperature, and switches the system ON and OFF to maintain a set temperature.
  • Page 29: Networker Installation Kun4 & Kun5

    TW1 and TW2. NEVER use a combination of top and bottom terminals when connecting to a single appliance. For example, a Kaden Networker operating a Kaden cooler and a Kaden heater would have the two bottom terminals connected to the heater and the two top terminals connected to the cooler.
  • Page 30: Manual Wall Control Installation

    The Manual control backing plate has 2 terminal points for the connection of control wires. These connections are not polarity sensitive. IMPORTANT A Kaden Manual Wall Control can be wired directly to a Kaden KUN3, KEX3 or KEX4 heater as follows: • Run a twin wire cable (i.e. figure 8 cable - 0.75mm ) from the heater to the Manual Wall Control.
  • Page 31 • Feed your cable through the grommet located at the base of the heater underneath the access panel. • Connect the other end of the cable to the terminals marked R and W in the heater’s electronic control module, refer to Diagram 20. Manual Wall Control Backing Plate Thermostat Face...
  • Page 32: Commissioning Kun4 & Kun5

    Kaden Installer's Manual Ducted Gas Heaters 9. COMMISSIONING KUN4 & KUN5 All Kaden heaters have been factory tested, but should be commissioned and adjusted in accordance with the following instructions to ensure efficient and optimal heating performance. Remember: • Switch the mains power OFF before touching any wiring.
  • Page 33: Installer Parameters Via Networker

    INSTALLER PARAMETERS VIA NETWORKER 9.2.1 Networker Installer Parameter KUN4 & KUN5 Display Description HEATING: MAXIMUM FAN SPEED SETTING H01 ID01: 1350 The number displayed is the default fan speed setting. That is, the fan RPM setting for normal heating operation. This setting can be adjusted from 500 to 1450 and should be set to meet the installation airflow requirements.
  • Page 34: Kun4 & Kun5 Commissioning Instructions

    Kaden Installer's Manual Ducted Gas Heaters The Kaden Networker controller is used as a Wired Wall Thermostat and is also the interface to set Installer Parameters and obtain diagnostic information on the Kaden KUN4 and KUN5 Ducted Gas Heaters. A spare Networker should be kept on hand for such purposes.
  • Page 35: Heater Fan Speed And Temperature Settings

    Initially the fan will run at a low speed (approximately 500 RPM) and then ramp up to the preset fan speed for heating (refer to Table 7, Item 1). • Wait for the heater to operate for at least 1 minute and then measure the gas inlet pressure. While all other gas appliances are operating at full capacity, the gas pressure must not, at any time, fall below: •...
  • Page 36: Final Checks

    • Go to the Kaden Networker and close all but one zone. If the system does not have a common zone, leave only the zone key that operates the least number of outlets turned ON (ensure this zone does not have less than the minimum number of outlets required for the heater size).
  • Page 37: Error Codes Associated With Installation

    Networker controller if connected. The Kaden Networker controller is used as a Wired Wall Thermostat and is also the interface to set Installer Parameters and obtain diagnostic information on the Kaden KUN4 and KUN5 Ducted NOTE Gas Heaters.
  • Page 38: Commissioning Kun3, Kex3 & Kex4

    Kaden Installer's Manual Ducted Gas Heaters 10. COMMISSIONING KUN3, KEX3 & KEX4 10.1 COMMISSIONING INSTRUCTIONS With a correctly designed and installed ducted system, generally the balancing damper in an outlet register should be initially set as follows: • Living areas: 100% open •...
  • Page 39: Setting The Fan Speed

    Issue any required documentation to the relevant people/authorities in regard to the installation of the heater, the gas connection and power supply. For example, a Certificate of Compliance and Certificate of Electrical Safety. Ensure to advise the customer to visit www.metaflex.com.au/kaden and complete the online warranty registration for their appliance.
  • Page 40: Technical Specifications

    Kaden Installer's Manual Ducted Gas Heaters 11. TECHNICAL SPECIFICATIONS Natural Gas Minimum Airflow @ Total Fan motor Recommended Static Pressure (L/s) Heat Return Input Output Model KUN521 0.28 0.42 KUN530 0.36 0.54 1085 1052 1030 1000 KUN415 0.26 0.39 KUN420 0.26...
  • Page 41: Technical Support

    12. TECHNICAL SUPPORT For technical support please call Product warranty registration forms can be found online at www.metalflex.com.au/kaden or in 1300 4KADEN (1300 452 336) NOTE the owner’s manual.
  • Page 42 Kaden Installer's Manual Ducted Gas Heaters NOTES...
  • Page 43 NOTES...
  • Page 44 B063650 Issue D January 2020...

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