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IM 817-4
Actuator Type
Power
Power
Transformer
Torque
Running
Direction of Rotation
Supply
Consumption
Sizing
Time
Outdoor Air/Return Air
24 VAC ±20%
4 VA
80 to 110 sec
Reversible with built in switch L/R
Damper Actuator
50/60 HZ
2 Watts
(class 2 power source)
45 in-lb
for 0 to 35 in-lb
L = CW with an increase in voltage.
24 VDC ±10%
R = CCW with an increase in voltage.
Spring: reversible with CW/CCW
Face & Bypass
24 VAC ±20%
Running: 2.5 Watt;
5 VA
90 sec constant
mounting.
50/60 HZ
Holding: 1 Watt (class 2 power source)
45 in-lb
(independent
Motor: reversible with built in switch.
Damper Actuator
24 VDC ±10%
of load)
CW = CW with a decrease in signal.
CCW = CCW with a decrease in signal.
Figure 114 - Sensor Locations
Discharge Air Sensor
Room Air Sensor
Holes in Front
Access Panel
Outdoor Air Sensors
Outdoor Air
Opening
based on a 2 to 10 VDC input from the DDC Unit Ventilator Controller
(UVC). A 4 to 20 mA input signal can be used with the field addition of
a Belimo ZG-R01 (or equivalent) 500 ohm resistor (by others). Refer to
the wiring diagram for proper installation of the resistor. A 2 to 10 VDC
output signal is provided for damper position feedback. The gears can
be manually disengaged with a button on the actuator cover. Rotation
is counterclockwise to bypass air around coil.
The outdoor air/return air damper actuator is a unit mounted, direct
coupled, proportional control actuator that
spring returns
the outdoor
air damper shut upon a loss of power. The actuator provides proportional
damper control based on a 2 to 10 VDC input from the DDC Unit
Ventilator Controller (UVC). A 4 to 20 mA input signal can be used with
the field addition of a Belimo ZG-R01 (or equivalent) 500 ohm resistor
(by others). Refer to the wiring diagram for proper installation of the
resistor. A 2 to 10 VDC output signal is provided for damper position
feedback. Rotation is clockwise to open OA, close RA.
Face and Bypass Damper Actuator
The Face & Bypass damper actuator is a unit mounted, direct coupled,
non-spring returned actuator used for the modulation of the face and
bypass damper. The actuator provides proportional damper control
A 10 K ohm Negative Temperature Coefficient (NTC) sensor and a
1 K ohm Positive Temperature Coefficient sensor is provided for the
discharge air, outdoor air and room air temperature measurement. They
are located next to each other in the air stream as shown in Figure 114.
Each is wired to the terminal strip separately so that the Automatic
Temperature Control contractor may select the appropriate sensor for
the application.
10 K ohm NTC Sensor
The 10 K ohm NTC sensor is constructed from stainless steel with an
epoxy seal and twisted wire leads.
Type:
10K ohm @ 25ºC
Accuracy:
±0.2ºF, 40
o
F - 80ºF
±0.36ºF, 32ºF - 158ºF
1 K ohm PTC Sensor
The 1 K ohm sensor is a shrink-wrap encapsulated, PTC silicon sensing
element with stranded, tinned copper wire leads (#22 AWG).
Type:
1035 ohm @ 25ºC
Accuracy:
±0.9ºF, 5ºF - 167ºF
Digital Ready Unit Mounted
Temperature Sensor Specifications
Table 27. - Actuators Technical Data
Table 26 - Temperature Sensors Resistance Values
Digital Ready – Damper Actuator
Specifications
Outdoor Air/Return Air Damper Actuator
Figure 115 - Outdoor Air/Return Air Damper Actuator & Face
and Bypass Damper Actuator
Temperature (ºC)
-40 -20 0 20 25 30 40 50 60
10 K ohm (NTC)
Resistance (ohms)
337200
97130
32660
12490
10000
8056
5326
3602
2489
1 K ohm (PTC)
Temperature (ºC)
-40 -20 0 20 25 30 40 50 60
Resistance (ohms)
613
727
855
997
1035
1074
1153
1237
1323
