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Application Guide

505-048-2

SMZ1 Hydronic Snow Melt Controller

Self-Contained Interoperable Controller Model UCP-1

SUPERSEDES: November 19, 2013

EFFECTIVE: March 10, 2015

Plant ID: 001-4165

Table of Contents

SMZ1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   3
Purpose of This Guide . . . . . . . . . . . . . . . . . . . . . . . . .   3
Representations and Warranties  . . . . . . . . . . . . . . . . .   3
Applicable Documentation . . . . . . . . . . . . . . . . . . . . . .   4
Installation Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Static Electricity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FCC Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Before Installing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

About this Document . . . . . . . . . . . . . . . . . . . . . . . . 5
Inspecting the Equipment . . . . . . . . . . . . . . . . . . . . 5
What is Not Included with this Equipment . . . . . . . . 5
Equipment Location . . . . . . . . . . . . . . . . . . . . . . . . . 5
Selecting a Power Source . . . . . . . . . . . . . . . . . . . . 6

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Mounting the Device . . . . . . . . . . . . . . . . . . . . . . . . 6
Routing Cabling to the Device . . . . . . . . . . . . . . . . . 7
Grounding the Device . . . . . . . . . . . . . . . . . . . . . . . 7

Wiring Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Connecting Input Devices . . . . . . . . . . . . . . . . . . . 13
Connecting Output Devices . . . . . . . . . . . . . . . . . . 14
Other Connections. . . . . . . . . . . . . . . . . . . . . . . . . 15

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Mechanical. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Application Description. . . . . . . . . . . . . . . . . . . . . . . . 17
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . 17

Operational Modes  . . . . . . . . . . . . . . . . . . . . . . . . 17
Additional Features . . . . . . . . . . . . . . . . . . . . . . . . 18
Communication with Associated Devices  . . . . . . . 19
Automatic Configuration  . . . . . . . . . . . . . . . . . . . . 19

Controller Identification . . . . . . . . . . . . . . . . . . . . . . . 20

Network Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

Diagnostic LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Troubleshooting Tips . . . . . . . . . . . . . . . . . . . . . . . 26

Summary of Contents for iWorx SMZ1

Page 1: ...pecting the Equipment 5 What is Not Included with this Equipment 5 Equipment Location 5 Selecting a Power Source 6 Installation 6 Mounting the Device 6 Routing Cabling to the Device 7 Grounding the Device 7 Wiring Information 8 Connecting Input Devices 13 Connecting Output Devices 14 Other Connections 15 Specifications 15 Electrical 15 Mechanical 16 Application Description 17 Sequence of Operation...

Page 2: ...iWorx SMZ1 2 505 048 2 Effective March 10 2015 2015 Taco Electronic Solutions Inc THIS PAGE LEFT BLANK INTENTIONALLY ...

Page 3: ...o a BLM series boiler controller or HPM heat pump master controller Outdoor Air Cutoff temperature Configurable group circulators for assigning different heat sources to different groups of zones Automatic configuration with a Local Control Interface LCI touchscreen Alarm Event Reporting PURPOSE OF THIS GUIDE The iWorx SMZ1 Application Guide provides application information for the SMZ1 Controller...

Page 4: ...le for 167 F 75 C Part Number Audience Purpose iWorx SMZ1 Application Guide Document No 505 048 2 this doc ument Application Engineers Wholesalers Contractors Provides specific application information about the BLM series including sequence of operation and configuration information iWorx LCI Application Guide Document No 505 002 Application Engineers Installers Service Personnel Start up Technici...

Page 5: ...ipment and the receiver Connect the equipment to a power source different from that to which the receiver is connected Consult the equipment supplier or an experienced radio TV technician for help You are cautioned that any changes or modifications to this equipment not expressly approved in these instructions could void your authority to operate this equipment in the United States BEFORE INSTALLI...

Page 6: ...the load s coil To provide necessary RFI and transient protection the controller s ground GND pin T40 must be connected to earth ground or the earth ground of the packaged unit s enclosure ground Failure to properly ground the controller may cause it to exceed FCC limits Excessive noise could also produce inaccurate sensor data The power source must be capable of operating with this connection to ...

Page 7: ...he control enclosure and wiring conduit Grounding the Device The ground terminal T40 must be securely connected to earth ground Failure to properly ground this equipment will result in improper operation Improper grounding may also increase the risk of electrical shock and may increase the possibility of interference with radio TV reception For best performance connect the power supply common term...

Page 8: ...Taco Electronic Solutions Inc WIRING INFORMATION WARNING Terminals 12 15 18 and 38 are connected internally on all SMZ1 controllers Disconnect ALL power sources when installing or servicing this equipment to prevent electrical shock or equipment dam age ...

Page 9: ...iWorx SMZ1 505 048 2 Effective March 10 2015 9 2015 Taco Electronic Solutions Inc Figure 2 SMZ1 Power Sourcing ...

Page 10: ...iWorx SMZ1 10 505 048 2 Effective March 10 2015 2015 Taco Electronic Solutions Inc Figure 3 SMZ1 Power Isolated ...

Page 11: ...iWorx SMZ1 505 048 2 Effective March 10 2015 11 2015 Taco Electronic Solutions Inc Figure 4 SMZ1 Global Snow Melt Four Zones Power Sourcing ...

Page 12: ...iWorx SMZ1 12 505 048 2 Effective March 10 2015 2015 Taco Electronic Solutions Inc Figure 5 SMZ1 Global Snow Melt Four Zones 5 Wire Sensor Power Sourcing ...

Page 13: ...With Idle To connect the snowmelt sensor attach one wire to the SMS1 T19 and the other to the associated COM T18 Slab 1 Temperature ST1 This input uses a Precon III thermistor in the slab To connect a thermistor attach one wire to the ST1 T17 input and the other the adjacent COM T18 Snow Melt Sensor 2 SMS2 This input uses a snowmelt sensor individual zone snowmelt mode set as Zone Sense or Zone Se...

Page 14: ...nsor to SHT T3 The sensor s black ground wire should already be connected to COM Outdoor Air Temperature OAT This input uses a Precon III thermistor To connect a thermistor attach one wire to the OAT T7 input and the other the adjacent COM T6 Once connected remove the controller s cover and move the jumper W15 from Stat to UI11 Remember to place the UI11 dip switch in the thermistor positions Righ...

Page 15: ... T21 Zone 4 Out Z4 The Zone 4 output must be connected to a 24 VAC pilot relay if the load is greater than 1 Amp See preceding figures for details If the load is less than 1 Amp connect it to Z4 T20 and TC78 T21 SMLT Heater SH This output is used to regulate the temperature of the heating element in a five wire SMLT sensor Connect the Red wire from that sensor to SH T3 The sensor s black ground wi...

Page 16: ...eed 78KBPS 42 4 Volts DC max Cabling Maximum node to node distance 1312 feet 400 meters Maximum total distance 1640 feet 500 meters For detailed specifications refer to the FTT 10A Free Topology Transceiver User s Guide published by Echelon Corpo ration www echelon com support documentation manuals transceivers Mechanical Housing Dimensions 5 55 141mm high 6 54 166 mm wide 1 75 deep 44 mm ABS Weig...

Page 17: ...te supply temperatures The SML1 may be configured for a secondary loop supply which uses the injection functions of the BLM or it may be set to use only the primary loop as a supply The commissioning switch displayed on the LCI can be set to turn on all outputs simultaneously for test purposes The zone valve outputs are capable of actuating 2 wire zone valves with up to 1 0 A current draw 0 10V mo...

Page 18: ...supply pump for the zone circuits or to signal a heat demand to a non networked boiler control or other heat source If the SMZ1 Heat Demand setting is on then the status of this output is communicated to the BLM as a primary loop demand The greatest of the four zone demands is displayed as the Maximum Zone Demand If the SMZ1 Zone Demand setting is on this maximum value is communicated to the BLM a...

Page 19: ... HPM1 Automatic Configuration The SMZ1 and iWorx Local Control Interface LCI use a self configuring network management scheme requiring no external tools binding or LONWORKS knowledge The LCI recognizes and configures the SMZ1 when the controller s service pin is pressed The controller s status light flashes green until the controller is configured and is solid green after the controller is config...

Page 20: ...hardware input OCC will still be displayed on the LCI based on its configuration nviResetRuntime is a command to reset the fan heating and cooling runtimes If the value sent is 0 then no reset occurs if the value sent is 1 then the runtimes are reset nviSysTime is a time stamp to set the date and time Writing to this variable will change the time on the device and will affect all time related func...

Page 21: ...ve wire SMLT Sensor Setting Range Description SMLT Heat Off On Status of the pump output Primary Pump Group 1 Pump Group 2 Pump Zone 1 Pump Zone 2 Pump Zone 3 Pump Zone 4 Pump Zone 1 Out 0 00 to 100 00 Status of the zone outputs Zone 2 Out Zone 3 Out Zone 4 Out Zone 1 Setpoint 4 to 42 F 20 to 5 6 C Current setpoint for each zone Zone 2 Setpoint Zone 3 Setpoint Zone 4 Setpoint Runtimes Z1 Z2 Z3 Z4 ...

Page 22: ...d Structure N A Zone configuration for Modulated Output Zone 4 Mod Structure N A Zone configuration for Modulated Output OAT Snow Melt Cutoff 29 9 to 41 F 34 4 to 5 0 C 0 F 17 8 C Excessive Cold shutdown Zone 1 Name Alpha numeric string max 17 characters Zone 1 Zone naming override This name appears for the individual zone setting in the LCI Zone 2 Name Alpha numeric string max 17 characters Zone ...

Page 23: ...intains the slab during idling operation For Digital Zones This is the temperature at which the digital zone output turns off during idling operation Slab Low Idle Setp 4 to 42 F 20 to 5 5 C 20 0 F 6 7 C Temperature at which the digital zone output turns on in idling operation Setting Range Default Description Gain 4 to 5 0 Gain for zone response On 0 to 100 30 0 Initial Output when zone activates...

Page 24: ...larm Trigger Alarm Reset Temperature Sensor Alarm Normal Alarm Any one of the attached Sensors is Open or Short Sensor Reading is within the specified Sensor range or faulty sensor gets replaced Unit Maintenance Alarm Normal Alarm Any of the output runtimes exceeds the specified limit Runtimes are reset ...

Page 25: ...on Status Solid green when running and configured by an LCI networking Flashing green when running and NOT configured by an LCI stand alone Solid red when a fault condition exists control shut down Blinking Red the controller has a device failure Solid Amber The controller has not received a LCI ping message in over 10 minutes and is part of a network Network Yellow while the controller is transmi...

Page 26: ...ot relay have been powered with 24 VAC and the output has been correctly wired to the coil of the pilot relay Also ensure that the pilot relay has a 24 VAC coil Ensure that the output jumpers are in the right position for this application isolated group power sourcing or power sink ing The 10K thermistor reading is out of range The input is either shorted or open or the dip switches are not set Ma...

Page 27: ...iWorx SMZ1 505 048 2 Effective March 10 2015 27 2015 Taco Electronic Solutions Inc ...

Page 28: ...covered by this warranty TES products are not intended for use to sup port fire suppression systems life support sys tems critical care applications commercial aviation nuclear facilities or any other applica tions where product failure could lead to injury to person loss of life or catastrophic property damage and should not be sold for such pur poses If in doubt as to whether a particular produc...

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