7
HEAT PUMP OPERATION
LEGEND
A
B
TR1 & TR2 24-Volt Transformer
C
Not Used
D
Unit Terminals
E
On / Off Switch
F
Priority Jumper
(Not used)
H/P Jumper
(Jump for Heat Pump
Operation)
O/B Jumper
(Heat Pump Only –
Reversing Valve Operation)
EH Jumper
(Set Up Fan Operation for
Electric Heat)
G
Digital Display (Leaving Air Temperature
and configuration)
H
Up / Down / Set Buttons (High Limit,
Low Limit, Set)
I
Fan Jumper
(Continuous or Auto)
Staging Strategy
(Time / Temperature or
Time Only)
J
Not Used
K
Not Used
L
A / B / GND Communications Wire
M
S S Terminals – Leaving Air Sensor
(LAT)
General Installation Instructions
GEN II-R Controller
1. Install the
GEN II-R
controller on an interior wall where the ambient temperature is between 32°-
120°F (0°- 48°C) non-condensing. This controller is to be installed in an accessible interior
area; not in attics or above ceilings.
2. The controller is to be powered by a
dedicated
24vac 40va transformer.
VA based on damper
style and quantity
. The transformer secondary is wired to
TR1 TR2
on the controller
(B).
The secondary voltage to the controller must be 24 to 28vac.
3. Install the LAT air sensor in the supply air between the indoor coil and electric strip heat
elements.
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 procedures. If adjustments are
required, use the Blue potentiometer labeled R44 located in the upper left hand corner of the
GEN II-R
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.
HEAT PUMP OPERATION
TR1 & TR2 Power out to Dampers R & C
(18 ga thermostat wire)
TERMINAL FUNCTIONS / CONNECTIONS
S S – Leaving / Supply Air Sensor Input
G – Fan Output
W2 – Auxiliary / Emergency Heat
O/B – Reversing Valve Output
Y2 – Stage 2 Cool Output
Y1 – Stage 1 Cool Output
R – 24vac from Unit Transformer
TC / TC – Not Used
TR1 / TR2 – 24vac Power Input / Common
A / B - Data Transmit / Receive
5. Confirm you have daisy chained the
A
and
B
communication wires and
R
and
C
from the
Damper control boards to the GEN II-R controller (
A & L
),
A
=(TR1, TR2),
L
=(A, B). (Communi-
cation wire maximum is 4,000 ft. from the GEN II-R controller to the farthest damper).
6. On each damper board place the HP jumper on both pins for Heat Pump operation.
7. Connect the output wires from the controller to the HVAC system using standard 18 GA
thermostat wire.
GEN II-R
The
GEN II-R
is a residential / light commercial zone control system controlling 2-10 independent
zones per unit. The
GEN II-R
controller is designed for auto changeover, multi-stage Heat Pump
(2C/3H) and Gas Electric (2C/2H) applications.
The
GEN II-R
system uses field supplied programmable thermostats, which power and control the
24-volt, power open / power closed or power closed / spring open round and rectangular dampers.
Additional features include LED status indication of all system functions, digital LAT display, fully
adjustable capacity control with on-board limit settings, and optional staging strategies.
The system provides the installing contractor with a simple startup diagnostic to minimize wiring errors
and speed installation.
7 2
SET
DN
UP
S
S
GND
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
TR1 / TR2 - Damper Power Daisy Chain
Damper to Damper (18GA Thermostat wire)
