Emerson NELSON HEAT TRACE SMMC-3 Скачать руководство пользователя страница 1 | Manualshive

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SMMC-3 MANUAL

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Содержание NELSON HEAT TRACE SMMC-3

Страница 1: ...SMMC 3 MANUAL ...

Страница 2: ...med Connections 5 SYSTEM CHECK 6 OPERATION 7 Mode 1 Independent 7 Mode 2 Priority 7 Zone Assignment 8 Manual Operation 8 Programming Instructions 9 TROUBLESHOOT ING GUIDE 12 SMMC 3 Control panel access cover removed 13 SPECIFICATIONS 14 Sensor Extension Wire Specifications 14 LIMITED WARRANTY AND LIABILITY 15 ...

Страница 3: ... precipitation occurs during freezing conditions For each of the SMMC 3 control zones up to two individual moisture sensors can be connected However for each zone only one of these may be a surface sensor Each SMMC 3 must have a temperature sensor SMTS 1 in order to function A SMTS 1 is included with each SMMC 3 The SMMC 3 is housed in an enclosure suitable for commercial industrial applications N...

Страница 4: ...es a maximum current output of 1 25A The risk of fire or electric shock exists if the heating equipment is directly connected to the SMMC 3 Control Panel 7 These instructions must be saved and made available to owners or users of this product and or transferred to future owners 8 Secure the SMMC 3 in an accessible location The SMMC 3 Control Panel is not suitable for installation environments subj...

Страница 5: ...the terminal block correlates to a snow melting zone ensure that the output being connected matches the sensor inputs connected The output wire must be connected with the polarity as noted ensure voltage and amperages are suitable for the contactor being used The SMMC 3 will not function properly if the output connections are improperly made See Fig 4 10 The power supply is connected to the right ...

Страница 6: ...erature in the area of the SMTS 1 The Small green LED s next to the connected terminal blocks are lit no LED for the SMTS 1 block To cycle system and check sensor operation 1 Submerge the SMTS 1 in a quart litre of water and crushed ice 2 After 20 minutes confirm the display reads 32 F 0 C 3 Put a drop of water on each sensor surface the Power Relay light s on the front panel will light up and the...

Страница 7: ... 2 is de energized and Zone 1 re energized Similar logic applies for Zone 2 3 i e the lower numbered zone always takes priority The Priority mode available in the SMMC 3 can reduce circuit loading by splitting up a large snow melting area into separate smaller zones For example if a large area would require 90 Amps of current this could be split into two separate zones of say 50 Amps in one zone a...

Страница 8: ...ONE X button until the information below appears on the LCD screen Manual activation will only work a long as the ambient temperature is below the SMMC 3 shut off temperature The duration of the time the zone will remain energized Time Delay is pre set to 2 0 hours this can be adjusted by following the programming instructions below The minimum and maximum settings possible are noted on the LCD ad...

Страница 9: ...advances to the next program level Level 2 Operating Mode Selection PROGRAM MODE 2 Mode 1 or 2 The default mode setting is Mode 1 To move to the next level use the UP or DOWN buttons Press the SET button to select the operating mode Pressing UP selects Mode 1 Independent Pressing DOWN selects Mode 2 Priority After pressing the UP button for Mode 1 the program automatically accepts the selection an...

Страница 10: ...ing DOWN decreases the degree setting Press the SET button to accept the chosen slab off temperature and advances to the next program level Level 6 Setting the Relay Hold Time PROGRAM MODE 6 Relay Hold Time The default relay hold time is 3 0 hours for all zones To move to the next level use the UP or DOWN buttons Press the SET button to adjust the relay hold time for the snow melting zones The rel...

Страница 11: ...ll flash intermittently with the standard operating screen To cancel the error message press the DOWN button when the error screen is showing If there is a SMTS 1 error all automatic operation of the SMMC 3 ceases however manual operation of each zone is still possible If there is an SMPS 1 error automatic control of the associated zone is suspended again manual operation is still possible Once th...

Страница 12: ...f system using the front panel switch wait 10 seconds and turn on again The SMMC 3 should now recognize the sensor Error SMPS 1 on display and system not operating There is a communication problem with the in ground sensor Make sure the in ground sensor lead wires are connected to the terminal properly If the sensor wire has been extended use 4 Conductor Instrumentation Cable 18AWG shielded common...

Страница 13: ...tactor Coil Default Zone 2 Output Zone 3 Output Fuse Fuse OK LED 120VAC Power Connection Wiring guide on back of terminal block cover Temperature Sensor SMTS 1 this is included with the SMMC 3 and must be installed outdoors to sense air temperature Aerial Snow Sensor SMAS 1 Mast mounted to sense falling snow may be used as the preprogrammed sensor Gutter Sensor SMGS 1 secured in the gutter to dete...

Страница 14: ...ion Cable 18 20AWG shielded or unshielded common conductors such as twisted pair communications wire telephone wire electrical building wire and doorbell wire is not acceptable Manufacturer Belden 8770 or equal Gutter Sensor SMGS 1 3 Conductor Instrumentation Cable 18 20AWG shielded or unshielded common conductors such as twisted pair communications wire telephone wire electrical building wire and...

Страница 15: ...isuse accident abuse neglect normal wear and tear negligence other than Nelson s unauthorized modification or alteration use beyond rate capacity or improper installation maintenance or application To the extent that you or your agents has supplied specifications information representation of operating conditions or other data to Nelson in the selection or design of the Goods and the preparation o...

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