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Actuator and Temperature Response Device Connections
Actuator Connections
Electrical connections to damper actuators should be made in accordance with wiring diagrams developed in
compliance with applicable codes, ordinances and regulations (see Electrical Guidelines).
Temperature Response Device Connections
RRL - Dampers will be supplied with a thermostat-type temperature response device, as a standard. The device
is a RRL (resettable link device), which only incorporates one thermostat and therefore the damper remains
closed as soon as its sensor temperature is reached. Refer to Figure 17 for wiring of the RRL thermostat.
RRL/OCI - The RRL/OCI contains a RRL (see above) and two single pole single throw switches used to indicate
the damper blade position. The switches provide a positive open and closed signal and can be used in
conjunction with remote indicator lights. Refer to Figure 18 for wiring of the RRL/OCI option.
Figure 25: RRL wiring diagram
TOR - The TOR (temperature override device) option incorporates two thermostats with fixed settings (usually
165°F [74°C] and 350°F [177°C]). The primary sensor (the sensor with the lower temperature setting) can be
bypassed by an external contact closure allowing the damper to reopen until the secondary temperature is
reached (the sensor with the higher temperature setting).
See Figure 19.
When the temperature of the secondary sensor is
exceeded the damper closes and remains closed
thereafter.
The TOR assembly also contains two single pole, single
throw switch used to indicate damper blade position. The
switch provides a positive open and closed signal when
used in conjunction with remote indicator lights. See
Figure 19 for wiring of the TOR thermostats and indicator
switches.
10
GFSD Series
OPEN
CLOSED
Figure 26: RRL/OCI wiring diagram
Figure 27: TOR wiring diagram
OPEN
CLOSED
CLOSED
OPEN
®
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