Distributor Introduction to Walker Wireless What is a

Distributor Introduction to Walker Wireless

What is a Walker Wireless system Walker’s wireless product line is based on Walker’s IOBUS using Easy. STAT products with ZIGBEE radios on board – it is a wireless IOBUS with some significant advantages over a wired one. • Since all wireless modules communicate together in a ZIGBEE mesh network the assignment of modules to a WZ_Micro. SAC 31 is arbitrary and not dependant on location or wiring. • In many cases, for convenience, all wireless control panels (WZ_Micro. SAC 31) can be located in a single central location with all communication to external systems and devices via the wireless network. • Alternately, wireless control panels can be located in mechanical rooms near the units they are controlling. In fact, more that one autonomous wireless network can be created.

Simple System Architecture On a computer with Connect-IMS installed, settings are adjusted over the internet within the main control panel installed in a central mechanical room. Wireless information is then passed to the Walker Wireless controllers installed throughout the building. The Walker Wireless Controllers then command the connected building infrastructure, such as roof-top units, baseboard heaters, solar panels or lights. Wired Connections to Building Systems Internet Wireless Data Main control panel Operator Computer Walker Wireless Controllers

Simple System Architecture CENTRAL CONTROL PANEL These are the control panels for the 135 zone rooftop system at Lawson Mall in Saskatoon Canada. Consists of: WS 1500 Bridge 2004 Static IP Internet Bridge 10 WZ_Micro. SAC 31 10 WZ_ZCOORD mounted on the outside of the panel box. 135 Walker Wireless WZ_ROOFPTAC’S throughout the facility

Simple System Architecture Inside the Control Panel: • Within the control panel each WZ_Micro. SAC 31 is connected to the WS 15 xx or WS 16 xx via Smart. LAN in a standard Walker network. • The WZ_Micro. SAC 31 is then connected to a ZCOORD (Wireless coordinator) mounted on the outside of the panel box so that it is able to communicate with the wireless network. Connected to the WZ_Micro. SAC 31 by conventional wired IOBUS, the ZCOORD maps wireless packets to and from the WZ_Micro. SAC 31. • As with wired IOBUS, each WZ_Micro. SAC 31 can have 20 wireless controllers mapped into its database as addresses 3 through 22 (ZCOORD is adr. 23). To Wireless Network Wired IOBUS WZ_Mico. SAC 31 WZ_ZCOORD

Architecture in the Building Space Each wireless controller communicates with its assigned WZ_Micro. SAC 31 via the ZIGBEE wireless network. The radio in each controller “joins” the wireless network and also routes packets to and from other radios in the network. The Zigbee Mesh Network is a Self-Healing dynamic wireless protocol which finds and maintains a path (route) to the destination. If the route becomes obstructed, an alternate route is quickly discovered. Controllers decode only packets destined for themselves. Time information is transmitted globally to all controllers.

Strength and Reliability In a Walker Wireless system each controller acts as a transmitter and router of information. Main Control Box

Strength and Reliability Self-Healing - If a controller looses communication, or there is an obstruction, the mesh network will automatically find a new route for the data. Main Control Box

The Zigbee Radios The standard radios installed in all Walker Wireless products operate at 2. 4 GHz and allow for up to 30 meters (unobstructed) between devices. In testing, the radios communicate at 100% signal within 20 meters between radios on the same floor and 6 meters (2 floors) vertically in a concrete/steel building. Greater Distances: High Power Radios. If needed, High Power radios can replace the standard radios within Walker Wireless controllers at a minimal cost. These may be an option in situations where there is strong interference or large distances between controllers. Repeaters. Where there is a great distance between buildings, and there are no controllers nearby, low cost repeaters can be added to bridge communications.

Motion Detector The built in motion detector in each Walker Wireless controller allows the system to turn down the Setpoint when no motion is detected in the zone. The motion detector has a range of 10 meters at a viewing angle of 150 degrees. In situations where motion does not always mean occupancy (zones with animals or street facing windows) the motion sensitivity can be adjusted or disabled.

Wireless Advantages Network architecture and wireless communication removes the need for distributing control system physically throughout the facility. All control panels can be mounted in a single location. Stand alone unitary programming in each device minimizes or removes GCL programming time. All unitary controllers operate stand alone in case of loss of wireless communications Full duplex communication used between SAC and remote units guarantees data gets passed with feedback confirmation where required. Each external controller passes values, status and runtime information back to its host Micro. SAC on a regular basis – usually every 30 seconds. The host Micro. SAC sends supervisory data at roughly the same rate. Where required, packet communication frequency can be increased by adjustment in the wireless controller and GCL.

Wireless Marketing Advantages Degree day calculations for any area quickly show your Customer expected savings that can be achieved with an aggressive turn down strategy. Accurate measurement and control ensure your ability to maintain any setpoint at minimum cost and impress new Customers with a more comfortable environment. Real time usage calculations allow you to show your Customers his savings after a few months and in a concise manner. Product offering is unique in many new and untapped marketplaces where DDC was previously too expensive. Malls, Smaller Hotels and Motels, Aircraft hangers, private homes and small offices are among several new target audiences. Installation is hassle free – just involves changing thermostats in many cases. Does not need to interfere with current occupants. Strategies for Hydronic buildings ensure maximum tenant comfort on all floors while saving energy.

How Zigbee Wireless Works Uses a IEEE 802. 15. 4 wireless network with a ZIGBEE layer on top which includes Mesh Networking, Security, and Applications control. Allows up to 300 wireless devices to be connected per ZIGBEE network. If more than 300 wireless controllers are needed, then 2 or more networks can co-exist, each with up to 300 devices. Full network and controller diagnostics lets you see the status of all wireless communication, and identify and correct any communication issues. Low cost repeaters or higher powered radios can easily be used to bridge any wireless communication gaps. Network routing and other information is stored in EEPROM so the network recovers instantly after a power failure.

Communication Diagnostics Figure shows last transmit times in minutes in left hand column. Note that LVS_20 shows 7 minutes since last transmission indicating a poor link. This high powered radio link is mounted on the outside of a building and is currently under 10 feet of snow. The distance to the next link is about 500 feet. LVS 20 This link connects sporadically every 10 or 15 minutes, but still results in correct operation. Rather than digging it out or relocating, Walker is using the poor link to tune the operation of controls when wireless commands are sporadic. LVS 15 This controller is disconnected and shows 240 minutes (at least) since last transmission. Communication alarms can be generated based on time since last transmission

Wireless (WZ) Product Line-up product in out Switch Opt. Application WZ_LVSTAT 250 TKM 1 D 110 -240 VAC 10 A KMHC Baseboard Controller WZ_STAT 25 TKM 1 D 24 VAC 1 A 30 VDC 1 A KMHC 24 V Controller WZ_Controller 2 X 5 2 U 2 U 3 D 24 VAC 1 A 30 VDC 1 A DKMHC Stages of H/C WZ_Controller 3 x 4 TKM 4 D 24 VAC 1 A 30 VDC 1 A DKMHC Fan Heat Cool WZ_Controller 5 X 12 TKM 2 U 4 U 8 D 24 VAC 1 A 30 VDC 1 A DKMHC Dual Loop WZ_WRT_B TKM KM Battery Roomstat WZ_WRT_E TKM KM Energy Harvesting LEGEND – see next page All Easy-Stat strategies are available – Custom if required

Wireless (WZ) Product Line-up product in out Switch Opt. Application WZ_ZCOORD 2 U 2 U 3 D 24 VAC 1 A 30 VDC 1 A WZ_ROOMPTAC TKM 4 D 24 VAC 1 A 30 VDC 1 A KMLHC Room PTAC Controller WZ_ROOFPTAC TKM 4 D 24 VAC 1 A 30 VDC 1 A KMLHC Roof PTAC Controller WZ_RTU TKM 2 U 8 D 24 VAC 1 A 30 VDC 1 A KMHC Rooftop Controller WZ_VAV TKM 4 D 24 VAC 1 A 30 VDC 1 A KMLHC VAV Controller LEGEND T K M D U Temperature Knob Motion Digital Universal All Easy-Stat strategies are available – Custom if required ZIGBEE Coordinator H C L Heat Cool LCD

Easy. STAT Algorithms can be converted for Wireless use A large number of strategies have been developed for the Easy-STAT product line over the last several years. They are posted on our Web site and can be downloaded to the controllers with an inexpensive dongle. These applications are unitary, but can be modified easily with Walker’s Easy-STAT tool and with many adjustable features. All strategies can be converted for use with the Wireless product line if requested. Cindy Lee at Walker is our applications expert for Easy. STAT and WZ products – please contact her for any discussion. Heating/Cooling Radiation Control VVT strategies Lighting Control Duty-cycle Fan Coil Control Multiple zones Rooftop control Pressure Heat Pump VAV control AHU / Economizer Humidity

Typical GCL required per zone At Lawson Mall (135 WZ_ROOFPTAC’S), a number of global commands are calculated in the main panel (in this case PA 101). These are transmitted regularly to all panels. Typically, the GCL required per zone is just to map those global values.

Wireless Demo Kit The Wireless Demo contains one of each wireless controller complete with setup guides, marketing documentation and 4 hours over the phone or in site training. The databases for several installed sites are also available along with Demo access to the Mt. Washington site mock-up at Walker’s shop. The demo controllers are set up for “plug and play”. WZ_Micro. SAC 31 WZ_ZCOORD WZ_LVS 250 WZ_STAT 25 WZ_ROOFPTAC WZ_ROOMPTAC W_RTU CONNECT_IMS

Wireless Installations Mount Washington Community, Courtenay BC ---6 chalets, Mall at Lawson Heights, Saskatoon 75 WZ_LVSTAT 250 City of Moreland Hills Maintenance Garage, Ohio 18 WZ_RTU’ and CO 2 Verizon Wireless remote facility, Portland Oregon Mix of wireless Home on Quadra Island BC 10 WZ_LVSTAT 250 Westerly Hotel, Courtenay BC 8 Rooftops in main building, 200 suites to follow. RCMP Detachment, Courtenay BC. 12 WZRTU. Air Canada Hanger, Vancouver BC 20 -30 zones mixed wireless controllers 135 WZ_ROOFPTAC

Mount Washington Community Wireless Installation. On Mt. Washington in Courtenay BC, many Chalets have installed Walker Wireless. In our first “Community Network”. . Building owners in this environment are seeing up to 70% energy savings. Deep snow, distances between chalets and high interference put wireless communications to the test with excellent results.

Mall at Lawson Heights Saskatoon, Canada The Mall at Lawson Heights has 135 rooftop units that had poor control , no central control system, and no setback strategy. The estimated savings – (up to 50%) are expected to result in a payback of less that one year.

Westerly Hotel and Convention Center, Courtenay B. C. Best Western hotel and Convention Center, Courtenay is now appreciating more comfort and reduced costs with a Walker Wireless system recently installed and is looking forward to further expansions being installed later this year. Installation is proceeding, working around a busy operational schedule for the Hotel with no “down time” allowed.

Courtenay RCMP Detachment, Courtenay B. C. The Courtenay RCMP Detachment will begin to appreciate maximum energy efficiency with their Walker Wireless/Heat Pump system currently being installed. In this system, maintenance mangers like the idea that if they were to relocate, the controls are easily disconnected and transferred to a new location.

Air Canada hanger Vancouver B. C. Air Canada will save energy with Walker controls in their hanger at YVR. Existing, stand-alone Easy-STAT controllers are being replaced by their wireless equivalents. In March, Walker representatives went to the hanger to determine possible interferences within the structure. Tests confirmed radio communication will be strong through metal firewalls and several concrete floors without the use of repeaters or high powered radios.

Why Choose Walker Wireless Saving up to 40% or more on your heating/cooling bills gives a short return on investment while reducing your carbon footprint. Your heating or cooling is automatically adjusted based on room occupancy. Leading edge Wireless technology allows for non -invasive set up and dramatic cost savings on the initial installation. Individualized software gives you complete control of your building from anywhere in the world, with continuous and accurate tracking of heating expenses.

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