Temperature Control; Electric Duct Heater (Control Via Relay) - SystemAir SAVE VTR 150/B Service & Accessories Installation Manual

32 | Accessories
Configuration
1. Go to Service menu.
2. Enter password (default 1111).
3. Configure of CO and/or relative humidity sensor: Go to Input menu. Select UNIVERSAL tab. Select the universal in-
2
put to which the sensor is connected. Example if it is connected to UI4 on the connection board, then select UNIVER-
SAL INPUT 4. Select signal type as Analog input and select sensor type from the input type list: RH sensor (RH)
and/or CO₂ Sensor (CO₂).
4. Configure room temperature sensor: Go to Input menu. Select ANALOG tab. 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. Select
input type as Room Air Temperature Sensor (RAT).
5.3

Temperature control

5.3.1

Electric duct heater (control via relay)

The electric heater can be installed in outdoor or supply air ducts.
• ELH — electric heater
• ECT — extra controller temperature sensor
• OAT — outdoor air duct temperature sensor
• SAT — supply air temperature sensor
• RL — relay
• 1 — Outdoor air
• 2 — Supply air
• 3 — Extract air
• 4 — Exhaust air
Component/product — Article number:
• CB 125-0,6 230V/1 Duct heater — 5289
• CB Preheater Connection Kit — 142852
5.3.1.1 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. It must be in-
stalled in the circuit.
3. Install a duct temperature sensor (OAT) before the
electric heater and connect it to any free analog input
on the connection board (CB).
T
ECT
ELH
2
AI
SAT
230 V~
RL
ELH
4
3
DO
SAT
1
RL
230 V~
ELH
AI AI
DO
ECT
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