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.
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