4
3. Install the leaving air sensor (LAT) in the supply air, ahead of the bypass take-off. Sensor wires
are connected to the
S S
terminals on the controller
(M).
The LAT sensor leads may be
extended using standard 18/2 thermostat wire.
4. The leaving air sensor (LAT) is calibrated to the controller at the factory. However, the
calibration should be checked as part of the system setup procedure. If adjustments are
required, use the Blue potentiometer labeled R44 located in the upper right hand corner of the
GEN II
controller. Screw the pot clockwise to lower the display temperature and counter -
clockwise to raise the temperature.
NOTE
: The display will update every 10 seconds.
Gas Electric - Basic
GEN II
Controller Configuration
The
GEN II
is equipped with a
Digital Display (G) that constantly displays Leaving
Air Temperature from the unit.
The display and 3 buttons beneath the display provide the
installing contractor the ability to tailor the system to your specific application.
The
GEN II
controller is shipped from the factory configured for basic Gas/Electric operation.
However, the following should be checked as part of the initial installation setup procedures:
1.
EH
jumper
(F)
is installed by the factory on one pin for normal gas heat operation where the fan
is controlled by the HVAC system fan control. When a fan output is required from the GEN II
controller on a call for heat, place the
EH
jumper over both pins for several seconds and then
remove. Place the jumper tab on one pin.
GAS ELECTRIC BASIC CONTROLLER CONFIGURATION
5. Confirm you have connected the
A
and
B
communication wires and
TR1
and
TR2
from the
thermostats to the Gen II controller (
A & L
), A=(TR1, TR2), L=(A, B). (Communication
wire maxmum is 4,000 ft. from the Gen II controller to the farthest EzTouch).
6. Connect the output wires from the controller to the HVAC system using standard 18 GA
thermostat wire.
The LAT sensor leads may be extended using standard 18/2 thermostat wire.
GEN II-VVT
7 2
SET
DN
UP
S
S
B
ON
AUTO
TIME/TMP
TIME
EH
O/B
HP
PRI
NIGHT
DA
Y
UNLOCK LOCK
OFF ON
G
W2
W1
Y2
Y1
TC
TC
TR1
TR2
TR1
TR2
Y1
Y2
W1
W2
G
R
HP
GE
O/B
R
Y1
Y2
G
W2
A
A
B
C
D
E
F
G
H
I
J
K
L
M
OUT
IN
