WT-4000 Series Pneumatic-To-Direct Digital Control (DDC) Room Thermostats Installation Instructions Part No
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24- 10732- 5, Rev. D WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Installation Instructions Part No. 24-10732-5, Rev. D Issued August 2017 WT-4002-MCR, WT-4002-MCM, WT-4002-MFR, WT-4002-MFM Refer to the QuickLIT website for the most up-to-date version of this document. Application All WT-4000 Series Room Thermostats include an LCD, with either a Fahrenheit or Celsius temperature The WT-4000 Series Pneumatic-to-Direct Digital display. Depending on the model chosen, the room Control (DDC) Room Thermostats provide reliable thermostat can transmit sensed temperature, setpoint zone comfort and enhanced energy economy via temperature, occupancy status, and low battery remote monitoring and temperature setpoint conditions to an associated router and gateway. The management. This arrangement provides greater WT-4000 Series Room Thermostat is designed for energy policy compliance, and facilitates trending of indoor, intra-building applications only. floor space usage in commercial, industrial, and municipal HVAC environments. The WT-4000 Series uses a proprietary direct-sequence, spread-spectrum RF technology, The WT-4000 Series Room Thermostats are ideally and operates on the 2.4 GHz Industrial, Scientific, and suited for energy-saving, pneumatic-to-DDC building Medical (ISM) band. The room thermostat meets the upgrades. Designed for non-invasive replacement IEEE 802.15.4 standard for low power, low duty cycle of existing manual pneumatic thermostats, the RF transmitting systems. WT-4000 Series Room Thermostats provide a number of DDC features, including remote wireless setpoint IMPORTANT: The WT-4000 Series control and occupancy scheduling, and continuous Pneumatic-to-DDC Room Thermostat is intended to room temperature, branch line pressure, and battery provide an input to equipment under normal status monitoring. All of these features were previously operating conditions. Where failure or malfunction of unavailable in existing pneumatic HVAC control the room thermostat could lead to personal injury or systems. property damage to the controlled equipment or The innovative design of the WT-4000 Series Room other property, additional precautions must be Thermostats completely reshapes the pneumatic designed into the control system. Incorporate and HVAC control industry. The room thermostat itself does maintain other devices, such as supervisory or not utilize any mechanical parts. A solid state alarm systems or safety or limit controls, intended to temperature sensor replaces the bi-metallic strip warn of or protect against failure or malfunction of elements for precise room temperature monitoring. In the room thermostat. addition, an advanced piezoelectric air valve replaces IMPORTANT: Le WT-4000 Series the mechanical relay for improved branch line pressure Pneumatic-to-DDC Room Thermostat est destiné à control. All of these technologies provide longer, more transmettre des données entrantes à un équipement dependable, and maintenance-free operation. dans des conditions normales de fonctionnement. Models are available for wireless mesh Lorsqu'une défaillance ou un dysfonctionnement du communications, or they can be configured in the field room thermostat risque de provoquer des blessures for stand-alone applications. In a wireless mesh ou d'endommager l'équipement contrôlé ou un autre network application, the WT-4000 Series Room équipement, la conception du système de contrôle Thermostat communicates with the controller by doit intégrer des dispositifs de protection means of a Johnson Controls® WT-ROUTER Router supplémentaires. Veiller dans ce cas à intégrer de and Johnson Controls WT-BAC-IP Gateway. façon permanente d'autres dispositifs, tels que des systèmes de supervision ou d'alarme, ou des Some WT-4000 Series Room Thermostats include a dispositifs de sécurité ou de limitation, ayant une binary dry contact input for an occupancy sensor (field fonction d'avertissement ou de protection en cas de furnished), to detect motion and determine if a space is défaillance ou de dysfonctionnement du room occupied. This feature maximizes up to 30% energy thermostat. savings in high-energy usage environments such as schools, dormitories, offices, and hospitals by adjusting the temperature of the space based on the occupancy status. WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Installation Instructions 1 IMPORTANT: The WT-4000 Series Installation Pneumatic-to-DDC Room Thermostat is not The first step of the installation process is to plan the designed or intended for use in mission-critical or layout of the devices on the building floor plan. This life/safety applications. process includes identifying the desired locations for all WT-4000 Series Pneumatic-to-DDC Room North American Emissions Compliance Thermostats, as well as the Johnson Controls United States WT-BAC-IP Gateway. Next, measure the radial distances between each Compliance Statement (Part 15.19) WT-4000 Series Room Thermostat and the This device complies with Part 15 of the FCC Rules. WT-BAC-IP Gateway, to determine if the distances are Operation is subject to the following two conditions: within 200 ft (61 m). If the distance exceeds 200 ft (61 m), Johnson Controls WT-ROUTER Routers must 1. This device may not cause harmful interference, be installed to relay signals between each room and thermostat and the associated gateway. 2. This device must accept any interference The ideal installation provides each room thermostat received, including interference that may cause with at least two routes of transmission to the gateway, undesired operation. to ensure signal transmission success. The nominal Warning (Part 15.21) transmission range of each router in a standard building is 200 ft (61 m). To ensure proper signal Changes or modifications not expressly approved by transmission in a wireless mesh network, there should the party responsible for compliance could void the be at least two routers, or one router and one gateway, user’s authority to operate the equipment. located within a 200 ft (61 m) radius of every room thermostat. Canada In order for the devices to connect to the same mesh Industry Canada Statement network, they all must have the same group ID. Both the group ID and the device ID can be changed in the The term IC before the certification/registration field; see Net Config Screen on page 10 for more number only signifies that the Industry Canada details. technical specifications were met. Le terme « IC » précédant le numéro d'accréditation/ inscription signifie simplement que le produit est conforme aux spécifications techniques d'Industry Canada. WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Installation Instructions 2 Dimensions 4-23/32 13/16 (120) (21) 3-3/4 (95) Figure 1: WT-4000 Series Pneumatic-to-DDC Room Thermostat, Dimensions, in. (mm) Mounting - To document the location of where each wireless device is installed The WT-4000 Series Room Thermostats require the WT-BAC-IP Gateway and WT-ROUTER Router to Mounting Procedure operate as a complete wireless solution. Refer to the Mount the WT-4000 Series Room Thermostat WT-BAC-IP Gateway Installation Instructions according to the steps that follow. Only those (Part No. 24-10732-21) for details on installing the individuals that are experienced with HVAC gateway, and the WT-ROUTER Router Installation maintenance and commercial room thermostats should Instructions (Part No. 24-10732-13) for details on perform this installation. installing the router. 1. Remove the old room thermostat from the Tools and Hardware Required mounting surface and disconnect the air lines • Couplings or reducers to connect room connected to it. Be sure to label the branch line and thermostats to existing air lines the main line. • Needle nose pliers 2. Bend the four locking tabs on the wallplate outward to separate the wallplate from the new • Small level WT-4000 Series Room Thermostat. • Fasteners and anchors to secure room thermostats 3. Mount the wallplate to the mounting surface: (site specific) a. Thread the existing air lines from the wall • Plastic tie wraps to secure routers (site specific) through the large opening in the wallplate. • Electric drill (optional) b. Position the wallplate against the mounting • Building floor plans identifying where the system is surface to be sure it seats flush with the to be installed, serving multiple purposes: surface. - To plan the wireless network before c. Use a small level or visually check that the installation, by identifying room thermostat wallplate is level. locations WT-4000 Series Pneumatic-to-Direct Digital Control (DDC) Room Thermostats Installation Instructions 3 d. Mounting holes on the wallplate are designed Figure 2 illustrates the LCD during room to fit a standard electrical box. If additional thermostat initialization. mounting holes are required, mark the locations on the mounting surface. e. Remove the wallplate from the mounting surface and drill any additional mounting holes as needed at each of the marked locations. f. Use the appropriate mounting hardware (field furnished) for the specific mounting surface and secure the wallplate to the surface. 4. Connect the air lines to the room thermostat. See Clean Air Requirements on page 5 to ensure that FIG:lcd_initliztn the air supply is clean, dry, and oil-free. Figure 2: LCD during Initialization IMPORTANT: Avoid applying excessive pressure while making the air line connections to the barbed 7. Check the wireless connectivity at the intended