Airflow Control; Vav/Cav Conversion Kit - SystemAir SAVE VTC 200-1 Service & Accessories Installation Manual

40 | Accessories
Configuration
Before change-over heating/cooling can be activated, all components must be configured in the control panel.
1. Go to Service menu
2. Enter password (default 1111)
3. Go to Components menu, select Heater menu and select type as Change-over. Do advanced settings if
necessary.
Go to Components menu, select Cooler menu and select type as Change-over. Do advanced settings if
necessary.
4. Configure control signal of the heat pump or similar device. Go to Service menu. Select Output menu. In next
menu select ANALOG tab. Select the analog output to which the control signal wire is connected. Example if it is con-
nected to AO3 on the connection board, then select ANALOG OUTPUT 3 and select Y1 / Y3 Change-over from the
output type list.
5. Configure heating start signal. Go to Output. Select DIGITAL tab. Select the digital output to which the heating start
signal wire from the heat pump is connected. Example if it is connected to DO1 on the connection board, then select
DIGITAL OUTPUT 1 and select Step Controller Y1 Heating from the output type list.
6. Configure cooling start signal. Go to Output. Select DIGITAL tab. Select the digital output to which the cooling start
signal wire from the heat pump is connected. Example if it is connected to DO2 on the connection board, then select
DIGITAL OUTPUT 2 and select Step Controller Y3 Cooling from the output type list.
7. Configure frost protection sensor (FPT). Go back to Input menu. Select ANALOG tab. Select the analog input to which
the frost protection sensor is connected. Example if it is connected to AI6 on the connection board, then select ANA-
LOG INPUT 6 and select Frost Protection Temperature Sensor (FPT) from the input type list.
8. Configure temperature feedback signal from the pipe or heat pump. Go to Input menu. Select UNIVERSAL tab. Se-
lect the universal input to which the feedback wire is connected. Example if it is connected to UI1 on the connection
board, then select UNIVERSAL INPUT 1. Set signal type as Digital input and select an option Change-over
feedback from the input type list.
9. Since a duct temperature sensor replaces internal supply air temperature sensor, it doesn't need to be re-configured.
Note:
A duct temperature sensor can be connected to analog inputs 6–7 on the connection board for better
access and then configured as a supply air temperature sensor. However the internal supply air
temperature sensor must be disabled in the control panel first.
10.Configure relay for water pump control. Go to Output. Select DIGITAL tab. Select the digital output to which the
relay is connected. Example if it is connected to DO3 on the connection board, then select DIGITAL OUTPUT 3 and
select Start/Stop Circulation Pump, Y1/Y3 Change-over from the output type list.
6.4

Airflow control

6.4.1

VAV/CAV conversion kit

The VAV/CAV conversion kit is used for VAV/CAV control of residential units.
Note:
The accessory package contains all needed parts for VAV conversion, however for use with CAV, an IRIS
damper or a similar device with known K factor has to be purchased.
Component/product — Article number:
• VAV/CAV conversion kit — 140777
• SPI-125 C Iris damper — 6751
Installation and connection
• Follow instructions in the manual which is delivered with the accessory.
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