CB connection kit Installation instructions Document in original language | 210241 · v002 GB
10241 | v002
Electric duct heater (control via relay) | 1 Electric duct heater (control via relay) Danger • Make sure that the mains supply to the unit is disconnected before performing any maintenance or electrical work! • All electrical connections and maintenance work must be carried out by an authorized installer and in accordance with local rules and regulations. The electric heater can be installed in outdoor or supply air ducts.
2 | Electric duct heater (control via relay) 1.1 Heater installed in the outdoor air duct Installation and connection 1. Install an electric heater (ELH) at least 100 mm distance from the unit in the outdoor air duct. A relay (RL) is used to control the heater. Connect relay to any free digital output on the connection board (CB). 2. Connect the power supply to the electric heater via a relay. A circuit breaker (BRK) is not included in the package and must be ordered separately.
Electric duct heater (control via relay) | 6. After sensor configuration is changed, select the analog input to which the installed outdoor air temperature sensor (OAT) is connected (for example AI5) and configure it as Outdoor Air Temp. Sensor (OAT). 1.2 Heater installed in the supply air duct Installation and connection 1. Install an electric heater (ELH) at least 100 mm distance from the unit in the supply air duct. A relay (RL) is used to control the heater.
4 | Electric duct heater (control via relay) 5. Deactivate the internal supply air sensor: Service > Input > ANALOG > ANALOG INPUT 2 > Supply Air Temp. Sensor (SAT) > Inactive Input. 6. After sensor configuration is changed, select the analog input to which the installed supply air temperature sensor (SAT) is connected (for example AI5) and configure it as Supply Air Temp. Sensor (SAT). 1.3 Heater installed in the supply air duct (extra zone) ECT ECT Installation and connection 1.
Electric duct heater (control via relay) | connection board, then select DIGITAL OUTPUT 3 and select Step Controller Y4 Extra Controller from the output type list. 5. Configure the installed sensor. Go to menu Service > Input > ANALOG. Select the analog input to which the sensor is connected. Example if it is connected to AI6 on the connection board, then select ANALOG INPUT 6 > Extra Controller Temp. Sensor (ECT).
Phone +370 340 60165 Fax +370 340 60166 www.systemair.com CB connection kit · Installation instructions · 210241 · en_GB · 2021-06-09 · v002 Systemair UAB Linų st.
