SAVE VTR 250B SERVICE AND ACCESSORIES INSTALLATIONV1

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Accessories
4. Configure connection of the heater. Go to Service menu. Select Output menu. In next menu select DIGITAL tab.
Select the digital output to which the heater is connected. Example if it is connected to DO3 on the 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 Con-
troller Temp. Sensor (ECT).
5.3.2 Internal water heater
A water heating battery can be installed inside the unit and connected to water system.
• WH — water heating battery
• FPT — frost protection sensor
• SAT — supply air temperature sensor
• S — actuator for valve
• 1 — Outdoor air
• 2 — Supply air
• 3 — Extract air
• 4 — Exhaust air
Component/product — Article number:
• Water coil for SAVE VTR 250/B — 156370
• RVAZ4 24A Actuator 0-10V (S) — 9862
• ZTV 15-0,4 2-way valve — 9829
• ZTV 15-0,6 2-way valve — 6571
• ZTR 15-0,4 valve 3-way — 9670
• ZTR 15-0,6 valve 3-way — 6573
Installation and connection
1. Remove plug and add the frost protection sensor. Tread seal the sensor.
2. Install water heater in the unit. Connect pipes, 2/3–way valve and actuator.
Important
Do NOT use 24V DC power output from the connection board for valve actuator.
3. Connect actuator (S) to any free analog output.
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