AIR HEATER TYPE DXA
24Pages

INSTALLATION MANUAL AIR HEATER TYPE DXA C€

1.1 Symbols used in this manual 3 2.4 Children and vulnerable users 4 6.2 Minimum firing time 12 8.1 Adjusting the burner settings 15 8.2 Converting to another gas type 16 9.1 Volatile lock outs 17 10.3 Maintenance of the burner unit 19 10.4 Extensive maintenance in poultry sheds 20 11 Electrical wiring diagram 21 12 Exploded view and spare parts 22

1 Introduction This manual is intended for the gas, electrical and mechanical installer. CAUTION! Indicates a potentially dangerous situation that could lead to injury or product damage. This document gives instructions on how to use and maintain the air heater. It is most important to follow the instructions in this document for safe operation of this air heater. NOTICE Indicates important information that is not directly related to safety. It is important to read this document before starting the installation process. Store this document close to the air heater for quick reference. 1.1...

This air heater uses oxygen from the surrounding air for the combustion process. CO2 is formed and emitted as a result. Too much CO2 in the air may be harmful to people, animals and crops. Never use water when cleaning electrical parts. This air heater is protected against splash water and has an IPX4B classification. Never allow the CO2 concentration to rise WARNING! Do not use a pressure washer to clean parts that contain electronics, such as the electric motor or the machine cover. 2.3.2 Disinfecting fluids above the values shown in the table below! ||This air heater may emit carbon...

INSTRUCTION MANUAL AIR HEATER TYPE DXA

The dimensions of this air heater can be found in figure 1.

4 Installation • Make sure the wall can support the air heater. Before installation, please use the data badge to check: • if the heater is in accordance with the order; • if the heater is suitable for the local present provisions (gas type, gas pressure, electrical supply etc.) Before leaving the factory, the air heater has been tested for safety and has been set to the operating settings. It has been configured for the type of gas that is stated on the data badge. Should there be any doubt about the settings that apply to your situation, please contact your supplier. Figure 2 - Minimum...

For United Kingdom only: The supply line for gas must comply with the Gas Engineers publications UP-1 and UP-2, as well as with BS 6891. Following these requirements when placing the thermostat to ensure the heater functions correctly: 4.4 Electrical connection The electrical installation must comply with local and national requirements as well as IEE regulations. Power supply The air heater requires an earthed power supply of 230 V/ AC. A supply of 400 V/AC + Neutral is optional. The control circuit is a two wire low voltage bus communication. • Make sure that air can circulate around the...

NOTICE The air heater must be switched off when setting the switches. Otherwise the settings will have no effect. Figure 5 - Bus communication connection Figure 6 - Positions of the S1 and J14 switches Figure 7 - Location of the S1 and J14 switches Figure 8 - Connection of multiple air heaters to a modulating room thermostat Each air heater needs an unique number to be recognised by the room thermostat. This number can be set with the J14 switch on the control unit of each air heater: 1. Set the S1 and J14 switches on the control unit as follows (figure 9): a. Set the S1 switch of the first...

To connect the air heater to an ON/OFF room thermostat, do the following: • Connect the two thermostat wires to terminal 6 and 7 (see figure 10 or the electrical wiring diagram in §11). This is a 24 V connection for the thermostat Never combine these connections with the terminals 6 and 7 of other air heaters. Always use separate relays for each air heater. Do not connect an external power source to these terminals. These terminals need a dry contact. 5 Flue systems DANGER! This air heater uses oxygen from the surrounding air for the combustion process. CO2 is formed and emitted as a...

6.3 Summer ventilation The air heater's display shows the current status of the burner cycle (figure 11). The fan can be set to run in the summer. Follow the instructions in the user manual of the special Room thermostat. 6.4 Overheating protection The air heater's heat exchanger and flue system are both protected from excessive temperatures. 6.4.1 Heat exchanger An NTC sensor is located near (or on) the heat exchanger. This sensor monitors the heat exchanger temperature. If the heat exchanger becomes too hot, this sensor will cause the heating process to stop. Depending on the temperature,...

When the supply pressure is too low, the heater will not work. Error A-09 will be shown on the display. The setting from the pressure switch is shown in the technical specifications (chapter 3). JWhen the supply pressure is too low, the combustion gasses may become harmful for humans, as well as animals and crops. JWhen multiple heaters start at the same time, the gas pressure may drop. When the gas pressure restores, the heater will automatically restart. 7 Commissioning the air heater 7.1 Adjusting the settings Prior to packaging, the safety and functioning of each air heater is checked...

3. Press the (—) button until 0 is displayed to exit the service. The air heater will always cool down the heat exchanger for several minutes. The test mode will automatically end after 10 minutes.

In principle, it is not necessary to adjust the control shortly after commissioning the air heater. When the control does have to be adjusted after a period of use or after installing a new heater, this must be done by a qualified person using calibrated equipment. |IA poor adjustment can lead to overheating of the air heater and/or production of toxic carbon monoxide. 8.1 Adjusting the burner settings The flow of gas to the burner is controlled with a gas valve. The valve must be set to the correct burner pressure. The minimum gas pressure switch is mounted on the right side of the...