SOLID STATE ECONOMIZER SYSTEM
7 63-2484—03
Dimensions: See Fig. 7.
Electrical Ratings:
Input Voltage: 24 Vac ±20%; 50/60 Hz (Class 2). Nominal
Power Consumption (at 24 Vac, 60 Hz): 11.5 VA.
Relay Contact Rating at 30 Vac (maximum power from class 2
input only): 1.5A run, 3.5A inrush.
IMPORTANT
All inputs and outputs must be 24 Vac Class 2.
Ambient Ratings:
Temperature: -40°F to +149°F (-40°C to +65°C). Humidity: 5
to 95 percent RH (noncondensing).
Inputs:
Enthalpy (C7400A or C7400C)
Dry Bulb Temperature (C7660)
Discharge Air (C7046)
Mixed Air (C7150)
DCV Sensor (C7232 or C7632): 0/2-10 Vdc control signal;
100K ohm input impedance.
Outputs:
Actuator Signal: 2-10 Vdc. Minimum Actuator Impedance: 1K
ohm.
Exhaust Fan: Contact closure.
24 Vac Out: 25 VA maximum.
Approvals:
Underwriters Laboratories Inc.: UL873 listed.
Flammability Rating: UL94-5VB.
Plenum Rated.
CE.
C-tick.
Accessories:
4074EJM Bag Assembly. Consists of: Checkout jumper, 620
ohm, 1.2K ohm, 5.6K ohm, and 6.8K ohm checkout resis-
tors.
C7046A Discharge Air Temperature Sensor.
C7150B Mixed Air Temperature Sensor.
C7232A,B Carbon Dioxide Sensors.
C7632 Carbon Dioxide Sensor.
C7400A Solid State Enthalpy Sensor used with W7212A,
W7213, and W7214 economizers.
C7400C Solid State Enthalpy Sensor used with W7212C
economizers.
C7660 Dry Bulb Temperature Sensor.
S963B1128 Remote Potentiometer to provide remote control
of damper minimum position.
ST6008 Energy Management Timer for occupied/unoccupied
control.
Fig. 7. Logic module dimensions in in. (mm).
1
The W7212A has A, B, C, and D settings that correspond to the lines on the partial psychrometric chart in Fig. 18.
2
The W7212C has A, B, C, D, and E settings that correspond to the lines on the partial psychrometric chart in Fig. 19.
4-3/8 (112)
1-5/8
(41)
4-1/8
(104)
1/8 (4)
2-5/8 (66)
M20578B
2-1/16
(53)
1-15/16
(49)
Table 2. T6031H Thermostat Specifications.
Model
Number
Control Range
Max Element
Temperature Differential
Type of
Mounting
Capillary Length Bulb Size
°F °C °F °C °F °C ft m in. mm
T6031H 0° to 95° -18° to +35° 150° 66° 3° 2° Back 2 0.6 3/8 x 3-1/2 10 x 89
Table 3. W7459A,C,D Specifications.
Model
For Use with
Actuator
Discharge Air
Temperature Input
Minimum Position
Potentiometer Adjustment
Terminals for Remote
Minimum Damper Position Output Relays
W7459A M7415 Thermistor Sensor Yes Yes 2 spdt
W7459C M8405 Spst control No. Minimum position
adjustment is built into
M8405 Actuator
No 2 spdt
W7212A
1
,C
2
M7215
MS7503
MS7505
Thermistor sensor Yes Yes 2 spdt (M7215
and MS7505)
1 spdt (MS7503)
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