Broan HRV650 Installation, Operation And Maintenance Instructions page 17

E-3: Occupied Timer/Sensor Connection
Occupancy control is achieved by connection to the
terminal interface shown below. These terminals require
a dry contact which could be provided by a number of
types of controls such as a timer, light sensor, occupancy
sensor, building management system or other. The unit
will not operate unless these contacts are closed!!
The illustration below shows a factory installed jumper
and programmable timer option.
NOTE: An occupied timer or sensor device cannot be
used with the Xtra wall control.
JUMPER
(factory installed)
WALL CONTROL
Black Green
Red Yellow
LOW
OCCUPIED
TIMER/
SENSOR
COMMON
HIGH
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry
contacts except wall control
and 24VAC power supply.
Use of 24VAC circuit
requires isolating contacts
(ex. thermostat) to prevent
interconnection of Class 2
outputs.
Appendix E Continued
Terminal Control Diagrams
OCC. CONTROL
NSB Timer (field installed)
WALL CONTROL
Black Green
Red Yellow
M
1 2 3 4 5
LOW
OCCUPIED
TIMER/
SENSOR
COMMON
24 (-) VAC
HIGH
24 (+) VAC
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry
contacts except wall control
and 24VAC power supply.
Use of 24VAC circuit
requires isolating contacts
(ex. thermostat) to prevent
interconnection of Class 2
outputs.
E-4: Remote Fan Control
Remote fan control can be achieved by connecting dry
contact controls to the terminal interface at terminals
labeled: LOW - COM - HIGH. These controls could be
the following: SPDT switch, dehumidistat, CO
light sensor, timer, building management system, etc.
The illustration below represents a switch connected to
the unit.
WALL CONTROL
Black Green
Red Yellow
LOW
OCCUPIED
TIMER/
SENSOR
COMMON
HIGH
F
F
CLASS 2 VOLTAGE
NOTE:
Connections are all dry
contacts except wall control
and 24VAC power supply.
Use of 24VAC circuit
requires isolating contacts
(ex. thermostat) to prevent
interconnection of Class 2
outputs.
- 17 -
sensor,
2
REMOTE FAN SWITCH
LOW HIGH