Honeywell C7400 Manual page 7

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.
Control Range
Model
Number °F
T6031H 0° to 95° -18° to +35° 150°
For Use with
Model Actuator
W7459A M7415
W7459C M8405
M7215
1 2
W7212A ,C
MS7503
MS7505
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.
Table 2. T6031H Thermostat Specifications.
Max Element
Temperature
°C °F °C
66°
Table 3. W7459A,C,D Specifications.
Discharge Air Minimum Position
Temperature Input Potentiometer Adjustment
Thermistor Sensor Yes
Spst control No. Minimum position
adjustment is built into
M8405 Actuator
Thermistor sensor Yes
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.
2-1/16
(53)
1-15/16
(49)
1/8 (4)
Fig. 7. Logic module dimensions in in. (mm).
Differential
Type of
°F °C Mounting
3° 2° Back
Terminals for Remote
Minimum Damper Position Output Relays
Yes
No
Yes
7
SOLID STATE ECONOMIZER SYSTEM
4-3/8 (112)
2-5/8 (66)
Capillary Length
ft m in.
2 0.6 3/8 x 3-1/2
2 spdt
2 spdt
2 spdt (M7215
and MS7505)
1 spdt (MS7503)
1-5/8
(41)
4-1/8
(104)
M20578B
Bulb Size
mm
10 x 89
63-2484—03