Vtronix
8
Heating Checkout
1.
Slide mode switch to HEAT, B terminal will get energized.
2.
Press
D
key until the set point is higher than room temperature. The star symbol is shown on the display.
The heating equipment is on and terminal W is energized.
3.
Press the
Ñ
key
until set point is lower than room temperature. The star symbol is removed. The heating
equipment is off and W terminal is de-energized.
Fan Checkout
1.
Slide FAN switch to ON position. The G terminal is energized and the fan should always be running.
2.
Slide FAN switch to AUTO position,
q
In cooling mode, the fan starts and stops with the cooling equipment.
q
In heating mode when setup switch is in the F position, the fan is controlled directly by the heating
equipment and may start a few minutes after the heating equipment turns on. When setup switch is in the
E position, the fan starts and stops with the heating equipment.
Application Note
Attached 1000 ohm, 3 watt resistor is used in certain applications to assure compatibility with power stealing
thermostats where Fan does not come ON during call for Heat or Cool. Note that resistor has to be installed
at the fan terminals and not at thermostat terminals.
To install the Resistor
1.
Disconnect power supply.
2.
Connect the resistor leads to the terminals
as shown in the drawing.
3.
Turn on the system power.
Air Handler Fan Board
1000 Ohm
3Watt
Resistor
Thermostat
C G
G
VTRONIX, LLC 318 Indian Trace #327, Weston, FL 33326
Copyright
©
2002 Vtronix Document no. 170306-000E Rev.01
