Actuator & Temperature Response Device Connections - Greenheck DFD Series Installation, Operation And Maintenance Manual

Actuator and Temperature Response Device Connections
Actuator Connections
Electrical and/or pneumatic connections to damper
actuators should be made in accordance with wiring
and piping diagrams developed in compliance with
applicable codes, ordinances and regulations (see
Electrical Guidelines).
Figure 23: RRL Wiring
Figure 24: OCI
Figure 25: RRL/OCI
Figure 26: TOR
Temperature Response Device
Connections
RRL: The RRL (resettable link device) incorporates
a single thermostat. When the thermostat
temperature is reached the sensor interrupts power
to the actuator and the actuator's spring return
mechanism causes the damper to close. Refer to
Figure 23 for wiring of the RRL thermostat.
OCI: The OCI (open or closed indicator) option contains
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 24 for wiring of the OCI option.
RRL/OCI: The RRL/OCI performs the function of an
RRL and OCI (see description above). Refer
to Figure 25 for wiring of the RRL/OCI option.
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 26.
The TOR assembly contains two single pole single
throw switches used to indicate damper blade
position. The switches provide a positive open
and closed signal and can be used in conjunction
with remote indicator lights. See Figure 26 for
wiring of the TOR thermostats and indicator
switches.
If either the TOR or the RRL is ordered with a
pneumatic actuator, an EP switch is required
with an appropriate electric power circuit to allow
the electric thermostat to control the pneumatic
actuator.
Ratings (Figure 23, 24, 25, & 26)
Integral Switch Type: Single Pole, double throw
Electrical Capacity: 10 Amps, 1/3 hp, 120 or 240 Vac
½ Amp, 125 Vdc;
1/4 Amp 250 Vdc
5 Amps, 120 Vac "L" (lamp load)
1.0 Amps, 24 Vac
1.5 Amps, 24 Vdc
Temperature Limit: 165° F (standard primary sensor)
212° F (optional primary sensor)
250° F (secondary sensor )*
350º F (secondary sensor)*
* based on actuator temperature rating
Multi-Blade Fire and Combination Fire Smoke Dampers 11