Lennox LCH036 Installation Instructions Manual page 62

2- Install thermostat assembly in accordance with
instructions provided with thermostat.
3- Connect thermostat wiring to the bottom of the Unit
Controller.
4- Wire as shown in figure 14 for electro-mechanical
and electronic thermostats.
temperature control devices or energy management
systems see instructions and wiring diagram
provided by manufacturer.
IMPORTANT-Terminal connections at the Unit Controller
must be made securely. Loose control wire connections
may allow unit to operate but not with proper response to
room demand.
Room Sensor Mode
The Unit Controller will operate heating and cooling
based on the Unit Controller internal setpoints and the
temperature from the A2 room sensor. An optional
Network Control Panel (NCP) can also be used to provide
setpoints. A thermostat or return air sensor can be used
as a back-up mode. Make room sensor wiring
connections as shown in figure 13.
C-Hot Gas Reheat Units Only -
1- Install humidity
instructions provided with sensor. A DDC input may
24 V POWER
R
C
G
W1
B
W2
Y1
A
ALL
Y2
SIGNALS REMAIN CONNECTED
AS SHOWN ON THE RIGHT.
OCP
TO PROVIDE SUPERMARKET REHEAT SCHEME
USE S86 DEHUMIDISTAT AND K55.
If using
sensor in accordance
24 VOLT FIELD WIRING IN THERMOSTAT MODE
TO UNIT CONTROLLER
THERMOSTAT INPUTS
TO R
2
2
7
TO G
K55−1
S86
5
TO Y1
OTHER THERMOSTAT
be used to initiate dehumidification instead of a
sensor.
2- Make wiring connections as shown in figure 14 for
thermostat mode or figure 13 for room sensor
mode. In addition, connect either a humidity
sensor or a dehumidification input. See figure 15
other
or 16 for humidity sensor wiring or figure 17 for
dehumidification input wiring.
FIELD WIRING IN ROOM SENSOR MODE
24VAC
R C
with
J297A
R
C
G
W1
W2
Y1
2
Y2
OCP
FIGURE 14
Page 12
(Room Sensor Mode)
UNIT CONTROLLER
SENSOR
SENSOR OUTPUTS
IAQ
AI1
HUM
TMP D01
A2 SENSOR
FIGURE 13
P297
A55
1
2
B
3
W1
4
W2
5
6
7
8
C
9
10
D02
J298
10
11
12