Fsdr-Xxx And Dfdr-Xxx Blade Orientation - Greenheck FSDR Series Installation, Operation And Maintenance Manual

6. CONNECtION AND OPERAtION OF tEMPERAtURE
RESPONSE DEVICES (Fusible Link, RRL OPtION,
OCI OPtION, tOR OPtION, and PRV OPtION)
continued....
OCI - The OCI (open or closed indicator) option contains
a single pole, double throw switch used to indicate the
damper blade position. The switch provides a positive open
or closed signal when used in conjunction with remote
indicator lights. Refer to Fig. 5 & 6
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 electrical signal allowing the damper to
reopen until the temperature reaches the setting of the
secondary sensor (the sensor with the higher temperature
setting). When the temperature of the secondary sensor is
exceeded the damper closes and remains closed thereafter
(Fig. 7)
The TOR assembly also contains a single pole, double throw
switch used to indicate damper blade position. The switch
provides a positive open or closed signal when used in
conjunction with remote indicator lights. See Fig. 6 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.
PRV - The PRV (pneumatic relief valve) option is heat
responsive device used with pneumatic actuators. This
can be used in place of EP switch where a RRL is used.
The PRV activates when temperature in excess of the
temperature of the fusible link are detected. When the
fusible link melts, air from the actuator is exhausted to close
the dampers. Pneumatic actuators are to be piped per local
code.
Fig. 5 OCI Wiring
Fig. 6 RRL/OCI Wiring
Fig. 7 tOR Wiring
RAtINGS (Fig. 4, 5, 6 & 7)
Integral Switch type: Single Pole, double throw
Electrical Capacity: 10 Amps, 1 /3 hp, 120 or 240 Vac
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
FSDR-XXX and DFDR-XXX
Blade Orientation
Axle
30° Off Horizontal (Maximum)
Axle
30° Off Horizontal (Maximum)
Axle
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
30°
30°
Normal
5