WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Installation Instructions
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Technical Specifications
WT-4000 Series Pneumatic-to-DDC Room Thermostats
Thermostat Type
Two-pipe
Control Action
DA/RA dual control action
Temperature Element Type
Advanced piezoelectric air valve
Air Connections
Dual barbed fittings for 5/32 or 1/4 in. (4 or 6 mm) O.D. polytubing
Gain/Sensitivity
Adjustable from 1 to 5 psi/F° (13 to 65 kPa/C°);
factory set at approximately 2 psi/F° (26 kPa/C°)
Flow Capacity
699 scim (191 mL/s) at 14 psig (96 kPa)
Air Consumption
None
Supply Pressure
Range:
12 to 18 psig (83 to 124 kPa) nominal; 30 psig (207 kPa) maximum
Note:
The air supply must be clean, dry, and oil-free.
Accuracy:
1.5% of full scale
Setpoint Range
Adjustable up to ±14F° (±8.4C°);
factory set at ±3F° (±1.8C°)
Temperature Measurement
Range:
32 to 99°F (0 to 37°C)
Accuracy:
±1.0F° (±0.6C°)
Power Requirements
Internal:
Four 3.6 VDC, 2700mAh, Size AA lithium batteries; typical battery life up to
4 years
External:
Minimum 3.1 to maximum 12 VDC via screw terminal
Room Thermostat Display
LCD indicates room temperature, branch line pressure, temperature setpoint,
occupied/setback mode, battery voltage and wireless connection status; supports
temperature setpoint adjustment, network configuration (Net Config) selection
(CH, GI, or DI), and maintenance mode selection
Wireless Band
Direct-sequence, spread-spectrum, 2.4 GHz ISM band
Operating Frequency Range
2,405 to 2,475 MHz
Channels
Quantity:
15
Spacing:
5 MHz
Transmissions
Power:
18 dBm maximum
Rate:
250 Kbits per second
Ambient Conditions
Operating:
41 to 99°F (5 to 37°C), 5 to 95% RH, noncondensing
Storage:
-
40 to 185°F (
-
40 to 85°C), 5 to 95% RH, noncondensing
Materials
White ABS plastic housing
Compliance
United States:
Transmission Complies with FCC Part 15.247 Regulations for Low Power Unlicensed
Transmitters
Transmitter FCC Identification: HSW-Z2430HPA
RoHS compliant (EU Directive)
Canada:
Industry Canada IC: 4492A-Z2430HPA
Shipping Weight
0.75 lb (0.34 kg) excluding batteries and packaging
The performance specifications are nominal and conform to acceptable industry standard. For application at conditions beyond these
specifications, consult the local Johnson Controls office. Johnson Controls shall not be liable for damages resulting from misapplication or
misuse of its products.
