Reznor ZQYRA Unit Installation Manual - Manual (Page 21)

Form I-ZQYRA P/N 260414R5, Page 21
FIGURE 24 - Option CN7C, Air Quality Sensor Switch and Wiring Connections
VOC and CO
Sensor, P/N 260192
Keyed, 3-Position Wall
Switch, P/N 260230
Cover, P/N 260229
Label, P/N 260231
3 Key Positions
HAND OFF AUTO
HAND
AUTO
OFF
Reference
11
SW2
AUTO & HAND
AUTO SW1
8
SHIELD
1 GROUND
3 SIGNAL
IAQ SENSOR
SHIELD
(OPT. CN7C)
1
POWER 2
GROUND
SWITCH
KEYED
3
9
3
= field wiring
• When the switch is in the manual OFF mode, the contact is open and the sensor is
disabled. When the input is open, the unit is off
Follow the sensor manufacturer-provided instructions for adjusting the setpoint and for
mounting the sensor. Install the switch in a field-supplied, standard 2 x 4 electrical box
to be mounted in the wall.
The sensor is powered from the control module 24VAC transformer. Follow the unit wir-
ing diagram to run wires and make connections. Use shielded 2/c cable for the 0-10V
digital signal.
Attach the “HAND/OFF/AUTO” cover plate.
Space Mounted
Occupancy Switch,
Option CN7D
The space-mounted occupancy switch is well suited for small enclosed spaces with
clear line of sight of the occupants. In “Auto-On” mode, the unit will start or stop based
on occupancy. The passive infrared sensor features an adjustable 5 to 30 minute sens-
ing window to prevent nuisance switching. The sensor has a manual on/off override
feature providing manual on/off control.
Refer to the manufacturer’s instructions for mounting and operation. The sensor
requires a separate power supply, external of the ventilation unit.
Four wires are required from the ventilation unit control panel to the wall sensor. Fol-
low the wiring diagram provided with the ventilation unit to run the wires and make the
necessary connections.
FIGURE 25 - Option CN7D, Occupancy Sensor Switch and Wiring Connections
Occupancy Sensor, P/N 260195
COM
RELAY OUTPUT
COMM
INPUT POWER
24V IN
N.O.
OCCUPANCY SENSOR
PW-100-24
OPT. CN7D
8
11 10
3
= field wiring