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IM 830-6
Digital Ready – Damper Actuator
Specifications
Outdoor Air/Return Air Damper Actuator
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 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 counter-clockwise to bypass air
around coil.
Figure 93: Outdoor Air/Return Air Damper Actuator & Face and
Bypass Damper Actuator
Return Air Damper Actuator
Digital Ready – Unit Mounted
Temperature Sensor Specifications
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
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 @ 25
°
C
Accuracy:
±0.2
°
F, 40
°
F - 80
°
F
±0.36
°
F, 32
°
F - 158
°
F
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 @ 25
°
C
Accuracy:
±0.9
°
F, 5
°
F - 167
°
F
Table 42: Temperature Sensors Resistance Values
10 K ohm
(NTC)
Temperature (°C)
-40
-20
0
20
25
30
40
50
60
Resistance (ohms)
337200
97130
32660
12490
10000
8056
5326
3602
2489
1 K ohm
(PTC)
Temperature (°C)
-40
-20
0
20
25
30
40
50
60
Resistance (ohms)
613
727
855
997
1035
1074
1153
1237
1323
Table 43: Actuators Technical Data
Actuator Type
Power Supply
Power
Consumption
Transformer Sizing
Torque
Running Time
Direction of Rotation
Outdoor Air/
Return Air Damper
Acuator
24 VAC ±20%
50/60 HZ
24 VDC ±10%
2 Watts
4 VA
(class 2 power source)
35 in.-lb.
80 to 110 sec. for
0 to 35 in.-lb.
Reversible with built in switch L/R
L = CW with an increase in voltage.
R = CCW with an increase in voltage.
Face & Bypass
Damper Actuator
24 VAC ±20%
50/60 HZ
24 VDC ±10%
Running: 2.5 Watt;
Holding: 1 Watt
5 VA
(class 2 power source)
35 in.-lb.
90 sec. constant
(independent of
load)
Spring: reversible with CW/CCW mounting
Motor: reversible with built in switch.
CW = CW with a decrease in signal.
CCW = CCW with a decrease in signal.
