Uponor A3040095 Installation And Operation Manual Download Page 34

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Technical data

Control

Microprocessor control; not a safety (limit) control

Packaged weight

1.3 lb. (590 g)

Dimensions

5" H x 3¼" W x

⁄

" D (127mm x 82mm x 23mm)

Enclosure

White PVC plastic, NEMA type 1

Ambient conditions

-4 to 122ºF (-20 to 50ºC), < 90% RH non-condensing, outdoor use permitted

when installed inside a NEMA 3 enclosure

Power supply

24 VAC ±10%, 60 Hz, Class 2, 16 VA standby, 100 VA fully loaded

Relay capacity

24 VAC 2 A, 3.6 A combined

Modulating output

0-10 VDC, 500 Ω minimum load impedance, 4-20 mA 1 kΩ maximum

load impedance

Sensors

NTC thermistor, 10k @ 77ºF (25ºC ± 0.2ºC) ß=3892

Included

Outdoor sensor and slab sensor

Optional

Pavement Snow and Ice Sensor (A3040090), Aerial Snow Sensor

(A3040095) and Slab Sensor for Aerial Snow Sensor (A3040073)

Summary of Contents for A3040095

Page 1: ...operating energy costs The control has an automatic start and stop function when used with the Pavement Snow and Ice Sensor A3040090 Automatic start with a timed stop is available when used with the Aerial Snow Sensor A3040095 The control can operate a dedicated hydronic boiler Isolation relays are required to operate line voltage pumps Features Automatic snow ice detection Supports both in slab a...

Page 2: ...Second printing August 2017 Printed in Canada Uponor Ltd 6510 Kennedy Road Mississauga ON L5T 2X4 CANADA T 888 994 7726 F 800 638 9517 uponorpro com Uponor has used reasonable efforts in collecting preparing and providing quality information and material in this manual However system enhancements may result in modification of features or specifications without notice Uponor is not liable for insta...

Page 3: ... menu 18 Toolbox menu 18 Override menu 19 System menu 20 Boiler menu 21 Sequence of operation 22 Snow melting overview 22 Slab temperature control 22 Melt operation 22 Manual start and timed stop 23 Automatic start and stop 23 Automatic start and timed stop 24 EconoMelt 24 Additional melting time 25 Idle operation 25 Warm weather shut down 26 Cold weather cut out 26 Away key 27 Slab protection 27 ...

Page 4: ...sources of electrical interference Easy access for wiring viewing and adjusting the display screen Maximum wire length of 500 feet 150m Approximately 5 feet 1 5m off the finished floor Strip wire to 10mm for all terminal connections Use standard 8 conductor 18 AWG wire Rough in wiring Low voltage wiring Pull each cable from the equipment to the control s plastic enclosure All low voltage wiring co...

Page 5: ...ternal transformer The total power capacity of the power supply should be larger than the total load of all the devices connected to the control This total load must not exceed 100 VA Control wiring Pavement Snow and Ice Sensor A3040090 Aerial Snow Sensor A3040095 Slab Sensor for Aerial Snow Sensor A3040073 Snow Sensor 095 Pavement Snow and Ice Sensor A3040090 Outdoor and supply sensors Modulating...

Page 6: ...or zone manager Alert relay output Transformer and relays Alert equipment 24 VAC relay 24 VAC relay System pump 2 1 8 7 3 4 5 6 2 1 8 7 3 4 5 6 Transformer L N C R On off boiler T T L N G 115 VAC Brn slab Mod Aux Ht R C Out Blk com Yel Blu Red Sup No power Brn slab Mod Aux Ht R C Out Blk com Yel Blu Red Su No power Zone 1 tN4 wiring center or zone manager Zone 2 Brn slab Mod tN4 Out bret Blk com Y...

Page 7: ...on the building a northern wall for most buildings and a southern facing wall for buildings with large south facing glass areas Do not expose the outdoor sensor to heat sources such as ventilation or window openings Install the outdoor sensor at an elevation above the ground that will prevent accidental damage or tampering Wiring the outdoor sensor Connect 18 AWG or similar wire to the two termina...

Page 8: ...re well for steel pipe of diameter greater than 1 32mm Uponor also recommends temperature wells when using large diameter pipes and fluid stratification is present Mounting the sensor Sensor Cable tie Sensor well Retaining clip Sensor Bottom of enclosure Mounting the slab sensor Note The Slab Sensor for Aerial Snow Sensor A3040073 can mount on a pipe or in a temperature immersion well Place the se...

Page 9: ... the chart below estimate the temperature measured by the sensor The sensor and thermometer readings should be close If the test meter reads a very high resistance there may be a broken wire a poor wiring connection or a defective sensor If the resistance is very low the wiring may be shorted there may be moisture in the sensor or the sensor may be defective To test for a defective sensor measure ...

Page 10: ... to navigate to the Override menu 3 Press ENTER to enter the Override menu 4 Select Manual Override to Max 5 Select the Maximum Heat Time after which the control resumes normal operation 6 Exit the Manual Override by selecting Auto Manual override test When operating an electric snow melting system the control includes a Test operation where the electrical heating cables can be energized for 10 mi...

Page 11: ...has been completed OFF Unlock access level The control is unlocked and the access level may be changed Go to the Toolbox menu to change the access level Set to Unlock during the installation process 2 ON Not used OFF Not used Manual override off The snow melting system can be manually turned off and the control remains off until manually changed back to Auto This allows the installer or end user t...

Page 12: ...uch to melt or stop Touch to adjust settings User interface Display Operational field Action MELT System is melting snow or ice IDLE System is idling OFF System is off Status field Action WWSD System is melting snow or ice CWCO System is idling TIMED System is in storm operation WARM System is off PEND Pending the system has detected water but it is too cold to operate Symbols Definition HEAT ON H...

Page 13: ...ckwards counterclockwise in below illustration through the menus Touch ENTER to enter a menu Setting items Touch or arrows to adjust the setting if required Touch NEXT ITEM to advance to the next item within the menu Touch BACK ITEM to go backwards to the previous item within the menu To return to the parent menu after changing a setting press and release the Home button To return to the Home scre...

Page 14: ...M Boil or Elec 76 to 149ºF 60 to 65ºC Installer SLAB TARGET This field displays the calculated slab target of the snow melting system Three dashes display when the snow melt control is off Conditions Application Mode is set to PWM Boil or Elec and a snow ice sensor or slab sensor is installed 76 to 149ºF 60 to 65ºC User Installer SLAB Current slab temperature as measured by the control Conditions ...

Page 15: ...n Mode is set to PWM or Elec Not visible when Manual Override is not Auto OFF or ON User Installer SYSTEM PUMP RELAY Shows the current status of the system pump relay Conditions Application Mode is set to PWM or Boil and Auxiliary Relay is set to SYS system pump OFF or ON User Installer ALERT RELAY Shows the current status of the alert relay Conditions Application Mode is set to PWM or Boil and Au...

Page 16: ... Installer ADDITIONAL MELT TIME Selects the amount of additional melting time after the Pavement Snow and Ice Sensor is dry This allows low spots on the slab to fully dry before the snow melting system is shut off Conditions Application Mode is set to PWM Boil or Elec and a Snow Ice Sensor is set to 090 AUTO MIN 2 1 MID 1 2 MAX Default AUTO Installer WATER SENSITIVITY Selects how sensitive the Pav...

Page 17: ...t reset Touch the number and then the ENTER key to reset Conditions Sensor is set to the Pavement Snow and Ice Sensor or Slab Sensor is set to On 58 to 167ºF 50 0 to 75 0ºC Installer SLAB LOW Records the lowest slab temperature since the item was last reset Touch the number and then the ENTER key to reset Conditions Snow Ice Sensor is set to the Pavement Snow and Ice Sensor or Slab Sensor is set t...

Page 18: ... Installer FACTORY DEFAULTS Loads the factory default settings Press ENTER to load defaults See Troubleshooting Guide on p 30 Installer HISTORY 1 THROUGH 5 Displays a history of any past errors that have occurred on the system Will clear after 30 days or press Up and Down buttons for one second to manually clear The last five history items will display if present Display menu The Display menu sele...

Page 19: ... during the HAND Manual Override 0 to 100 Default 0 Installer BOILER PERCENT Manually sets the modulating boiler firing rate during the HAND Manual Override Conditions Application Mode is set to Boil OFF or ON Default OFF Installer ALERT RELAY Manually turns on the alert relay during the HAND Manual Override Conditions Application Mode is set to PWM or Boil and Alert Relay is set to ALRT alert or ...

Page 20: ...Installer SLAB PROTECTION Select if the slab should be protected from large temperature differentials to avoid cracking the concrete due to high tensile stress Conditions Application Mode is set to Boil and Snow Ice Sensor is set to 090 or Slab Sensor is set to On OFF or ON Default OFF Installer ECONOMELT EconoMelt allows the user to mechanically remove snow then manually start the system to melt ...

Page 21: ...180 seconds Default OFF Installer BOILER MODULATION DELAY Shows the delay time between the burner firing and the boiler releasing to modulation Conditions Boiler Type is set to MOD modulating boiler 30 to 230 seconds Default 30 seconds Installer BOILER MOTOR SPEED Shows the time required for the modulating actuating motor to fully open the gas valve or ramp the burner fan from off to full speed on...

Page 22: ...rol will continue to operate without a slab sensor installed operating costs will be much higher The slab is operated using slab outdoor reset As the outdoor temperature gets colder the heat loss of the slab increases In order to keep the slab surface at a constant temperature while operating the inner core of the slab must be heated above the melt or idle temperature setting The amount that the s...

Page 23: ... menu that allows the installer to adjust the amount of moisture required to start and stop the melting operation In areas with low amounts of dust and or air pollution the sensitivity may need to be increased The Sensitivity setting default is Auto and the control will automatically determine the best suitable sensitivity setting for the installation When moisture is detected and the slab and out...

Page 24: ...TART key Pavement sensor and slab dry and ADD MELT time elapses Exits CWCO Automatic start and timed stop Automatic start with a timed stop operation requires the installation of an Aerial Snow Sensor A3040095 It is also highly recommended to install a Slab Sensor for Aerial Snow Sensor A3040073 to regulate the slab temperature and operate the snow melting system at the highest possible efficiency...

Page 25: ...esigning a snow melting system an engineer may specify the amount of allowed snow accumulation as the Snow free Area Ratio There are three different levels A Snow free Area Ratio of 1 is defined as a system that melts all snow as it falls with no allowed accumulation This requires that the Idle temperature be set just below freezing Examples of these types of applications include Hospital emergenc...

Page 26: ... 1ºC Manual WWSD The control enters WWSD when the outdoor air temperature exceeds the WWSD setting by 1ºF 0 5ºC and when the slab temperature exceeds 34ºF 1ºC The control exits WWSD when the outdoor air temperature falls 1ºF 0 5ºC below the WWSD setting or if the slab temperature falls below 34ºF 1ºC This allows the Melt temperature setting to be set higher than the WWSD This is useful when high s...

Page 27: ...lab creating large tensile stresses on the slab Concrete is weak to tensile forces and when repeatedly exposed to tensile loads the concrete may crack This may be prevented by selecting the Protect Slab setting in the System menu to On The control measures and limits the temperature differential between the supply water and the slab Application modes The snow melting control can operate either an ...

Page 28: ...the slab temperature reaches the slab target the on time per cycle of the heat relay is reduced to prevent the slab temperature from overshooting If no slab sensor is installed the heat relay remains on 100 of the time until the Melt operation has completed Idle operation is not available when a slab sensor is not installed The hydronic PWM operation requires the installation of an outdoor sensor ...

Page 29: ... off the boiler burner The modulating signal output is shown by the Boil Rate in the View menu The Modulation Delay setting is determined by the boiler manufacturer It is the amount of time that the burner must operate before the internal boiler control allows an external signal to operate the burner The Motor Speed sets the rate at which the modulating electrical signal can change For most modula...

Page 30: ...button for 3 seconds touch the NEXT key to locate the Toolbox Menu then touch the ENTER key The error code should appear as the first item 3 Solve Use the chart below to match the error code to the one on the control Use the description to solve the problem Error messages Field Description SET TEMP MENU SAVE ERROR The control failed to read the Set Temp menu settings from memory and has reloaded t...

Page 31: ...outdoor sensor wire for open circuits according to the sensor installation manual It may be necessary to replace the outdoor sensor Once the error has been corrected the error message automatically clears SUPPLY SENSOR SHORT CIRCUIT ERROR Due to a short circuit the control is unable to read the supply sensor When set to App Mode Boiler the control stops operation and does not provide any heat When...

Page 32: ...ed to the slab target Heat on not shown Check wiring of the system pump The system pump operates continuously during melt and idle operation The heat source must be wired to operate together with the heat relay System running with no snow Idle Idling heats the slab when the temperature falls below the Idle temperature Melt During Cold Weather Cut Out CWCO the system is shut off If shut off during ...

Page 33: ...or Slab protection EconoMelt Auxiliary relay Maximum melt time Warning This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm For more information visit http oehha ca gov prop65 html Boiler menu settings Item Setting Boiler type Boiler modulation type Boiler minimum modulation Boiler modulation delay Boiler motor speed Boiler d...

Page 34: ...door use permitted when installed inside a NEMA 3 enclosure Power supply 24 VAC 10 60 Hz Class 2 16 VA standby 100 VA fully loaded Relay capacity 24 VAC 2 A 3 6 A combined Modulating output 0 10 VDC 500 Ω minimum load impedance 4 20 mA 1 kΩ maximum load impedance Sensors NTC thermistor 10k 77ºF 25ºC 0 2ºC ß 3892 Included Outdoor sensor and slab sensor Optional Pavement Snow and Ice Sensor A3040090...

Page 35: ...Single zone snow melt control installation and operation manual 35 ...

Page 36: ...n_70162_0817 Copyright 2017 Uponor Printed in the United States Uponor Inc 5925 148th Street West Apple Valley MN 55124 USA T 800 321 4739 F 952 891 2008 Uponor Ltd 6510 Kennedy Road Mississauga ON L5T 2X4 CANADA T 888 994 7726 F 800 638 9517 ...

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