Actuator And Temperature Response Device Connections - Greenheck CFSD 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).
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 13 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 14 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 15 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 16.
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 25 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.
Figure 15: RRL Wiring
Figure 18: TOR
®
Figure 16: OCI
Ratings (Figure 15, 16, 17 & 18)
Integral Switch Type: Single Pole, double throw
Electrical Capacity: 10 Amps,
1/2 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
Figure 17: RRL/OCI
⁄ hp, 120 or 240 Vac
1
3
CFSD Series 7