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Page 2

MST 5

Although the manufacturer has made every effort to
ensure the accuracy of the information contained herein,
this document is subject to change without notice due to
ongoing product development.

WARNING AND PRECAUTIONS

Equipment , probe failure, blown fuses and/or tripped
breakers may prove harmful to the contents of the
building. Therefore it is strongly recommended to install
backup devices and alarm or warning devices. Spare
equipment should also be available at the owner’s site.
Equipment manufactured by the manufacturer is
protected against normal line surges. High surges caused
by thunder storms or power supply equipment may
damage this equipment. For added security against line
voltage surges it is recommended that surge and noise
suppression devices be installed at the electrical
distribution panel. Use of shielded cable for probes is
recommended for protection against lightning. These
devices are available from most electrical supply
distributors.

RECOMMENDATIONS

The manufacturer recommends that all installation
procedures described herein be performed by a qualified
electrician or installation technician. Further more the
manufacturer recommends to test all the functions and
equipment connected to the MST, including the alarm
system and backup devices, after installation, after
change to the installation and once a month after that.

Fuse verification and replacement, as well as the proper
setting of control values shall be the responsibility of the
owner.

www.monitrol.com

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Содержание MST-5

Страница 1: ...l rel rel MST 5 1 2 3 4 5 S T A G E 2 S T A G E 3 ST A G E 4 reduc per day COOL HEAT COOL HEAT A L A R M ALARM 5 STAGE THERMOSTAT computer compatible ADJUST Varifan TIMER on off PER IO D L IM I T COOL STAGES H E A T S TAGES STAGE 5 T I M E R www monitrol com ...

Страница 2: ... this equipment For added security against line voltage surges it is recommended that surge and noise suppression devices be installed at the electrical distribution panel Use of shielded cable for probes is recommended for protection against lightning These devices are available from most electrical supply distributors RECOMMENDATIONS The manufacturer recommends that all installation procedures d...

Страница 3: ... 11 2 4 1 Input Power 11 2 4 1 1 115 VAC 11 2 4 1 2 230 VAC 11 2 4 2 Wiring diagram 11 2 5 Temperature probe 12 2 5 1 Single Temperature Probe 12 2 5 2 Averaging 12 2 6 Alarm 12 2 7 Powering Up 13 CHAPTER 3 USER GUIDE LED Status Window 19 Control Dials 19 PRIMARY FUNCTIONS Main Set Point Temperature 21 Stage 1 Duty Cycle timer 22 Stage 2 Relative Set Point 23 Stage 3 Relative Set Point 24 Stage 4 ...

Страница 4: ...ure 30 Record High Temperature 31 Ambient Room Display 32 SECONDARY FUNCTIONS Stage 1 Duty Cycle Period 33 Drip Cool Duty Cycle 34 Stage 4 Heating or Cooling mode 35 Stage 5 Heating or Cooling mode 36 Minimum Ramping 37 Low Temperature Alarm 38 High Temperature Alarm 39 APPENDIX Troubleshooting 40 Specifications 41 Record Form 42 www monitrol com ...

Страница 5: ... cool unit Automatic temperature ramping Adjustable differential for cooling and heating stages The MST 5 provides microprocessor control over a five stage output The first stage controls a single speed fan or the first speed of a 2 speed motor The stage also includes a programmable duty cycle and adjustable timer setting The second stage provides control over a second single speed fan or the seco...

Страница 6: ...he continuous control of climate and timely alarm notification should environmental conditions exceed alarm set points Further security may be obtained by connecting all MST series controls in a network configuration to a computer via the use of an optional RCM 40 remote monitoring unit This provides remote control monitoring of each room The MST 5 provides an constant automatic temperature reduct...

Страница 7: ...re of the room RAMPING An automatic daily reduction in the main set point and all temperature settings relative to this DIFFERENTIAL ON OFF relay Range of temperature where two conditions are possible The output depends on whether the temperature was increasing or decreasing when it enters that range The differential helps to avoid frequent starts and stops of the actuator when temperature is clos...

Страница 8: ...Page 8 MST 5 www monitrol com ...

Страница 9: ... manufacturer recommends to closely observe the following installation procedure and that all work be performed by a certified electrician Failure to do so may void the warranty CHAPTER 2 INSTALLATION To limit the unit s exposure to noxious gases install the unit in a hallway Make sure the unit is mounted right side up with the cable entry holes facing down The MST 5 will operate in a temperature ...

Страница 10: ...m board and adapts the MST 5 for 115 VAC or 230 VAC line voltage Refer to Figures 1 and 2 2 3 2 Software Settings Switch This switch is located at the rear of the MST 5 faceplate and adjusts the following options Switch 1 Selects between a Fahrenheit or Celsius display on the front panel Switch 2 Locks unlocks user settings All settings except for main set point record low and record high temperat...

Страница 11: ...ch is set to 115 VAC Connect the power cable to terminals 11 and 12 on the main bottom board connect the ground wire to terminal 13 on the main board 2 4 1 2 230 VAC Make sure that the line voltage selector switch is set to 230 VAC Connect the power cable to terminals 11 and 12 on the main bottom board connect the ground wire to terminal 13 on the main board 2 4 1 2 WIRING DIAGRAM To use the MST 5...

Страница 12: ...r temperature probes are required to do temperature averaging in larger rooms Place the probes in appropriate locations to best average the room temperature Refer to figure 4 2 6 ALARM The MST 5 provides a normally open and normally closed dry contact for alarming low or high temperature conditions In addition that same contact may be used to signal a power failure This contact may be connected to...

Страница 13: ...Upon powering up the unit will test it s display by briefly lighting all the segments of it s LED display Make sure that all segments light up Following the LED display test the unit displays the room temperature If the temperature is not displayed refer to the Trouble Shooting section in the appendix of this manual Fig 1 Wiring diagram for 3 single speed fans and 2 heating units www monitrol com ...

Страница 14: ...Notes for Figures 1 and 2 Power cut and protection devices in case of overload Connect the grounding wire to the ground terminal 13 IMPORTANT Must be on a 15A separate circuit of the MST Make sure to disconnect power of the source and all loads before wiring 1 2 3 www monitrol com ...

Страница 15: ...Page 15 CHAPTER 2 INSTALLATION Fig 3 Probes and alarm wiring Fig 4 Temperature average probe connection www monitrol com ...

Страница 16: ...Page 16 MST 5 Fig 5 Main bottom Board terminal blocks and ground connection www monitrol com ...

Страница 17: ...Page 17 CHAPTER 3 USER S GUIDE CHAPTER 3 USER S GUIDE www monitrol com ...

Страница 18: ...Page 18 MST 5 www monitrol com ...

Страница 19: ...onal LEDs shown above in LED window When illuminated each LED indicates that its respective fan or heater is functioning The sixth LED lights up to indicate a low or high temperature alarm condition CONTROL DIALS The center dial is the selector dial and is used to select one of the control panel s 12 primary or 7 secondary functions The dial located to the right of the selector dial is the adjuste...

Страница 20: ...ugh 11 are selected the LED status window displays a blinking value Function 12 displays room temperature The 7 secondary functions are 2 Stage 1 duty cycle period 4 Drip cool duty cycle timer 5 Stage 1 Heat Cool 6 Stage 2 Heat Cool 9 Ramping minimum temperature limit 10 Low temperature alarm 11 High temperature alarm Select any one of these secondary mode functions by rotating the Selector dial t...

Страница 21: ...om a minimum setting of 13 5 F 9 5 C to a maximum setting of 105 0 F 41 0 C Adjusting the main set point temperature rotate the Selector dial to position 1 rotate the Adjuster dial counterclockwise to decrease the temperature setting and clockwise to increase it The main set point temperature is displayed on the MST 5 Note The ramping feature primary function 9 must be OFF to adjust the main set p...

Страница 22: ...function 2 in secondary mode The stage 1 duty cycle is adjusted in 5 increments from a minimum setting of OFF 5 10 etc up to a maximum setting of ON corresponding to continuous operation Adjusting the duty cycle of Stage 1 rotate the selector dial to position 2 rotate the adjuster dial counterclockwise to decrease the duty cycle and clockwise to increase it The duty cycle is displayed on the MST 5...

Страница 23: ...0 0 C to a maximum setting of 32 0 F 16 0 C Adjusting the relative set point of stage 2 rotate the selector dial to position 3 rotate the adjuster dial counterclockwise to decrease the relative set point and clockwise to increase it The stage 2 relative set point is displayed on the MST 5 Example A main set point of 70 F along with a stage 2 relative set point of 2 F is selected When the room temp...

Страница 24: ...a minimum setting of 0 0 F 0 0 C to a maximum setting of 32 0 F 16 0 C Adjusting the relative set point of stage 3 rotate the selector dial to position 4 rotate the adjuster dial counterclockwise to decrease the relative set point and clockwise to increase it The stage 3 relative set point is displayed on the MST 5 Example A main set point of 70 F along with a Stage 3 relative set point of 4 F is ...

Страница 25: ...a maximum setting of 32 0 F 16 0 C Adjusting the stage 4 relative temperature rotate the selector dial to position 5 rotate the adjuster dial counterclockwise to decrease the relative set point and clockwise to increase it The stage 4 relative set point is displayed MST 5 CHAPTER 3 USER S GUIDE Example The main set point temperature is adjusted to 70 F A heater is in use and the relative set point...

Страница 26: ...ncrements from a minimum setting of 15 0 F 10 0 C to a maximum setting of 32 0 F 16 0 C Adjusting the Stage 5 relative temperature rotate the selector dial to position 5 rotate the adjuster dial counterclockwise to decrease the relative set point and clockwise to increase it The stage 5 relative set point is displayed MST 5 Example The main set point temperature is adjusted to 70 F A heater is in ...

Страница 27: ...he temperature difference between the two thresholds is called the differential The differential is adjusted in 0 5 degree increments from a minimum setting of 0 5 F 0 5 C to a maximum setting of 10 F 5 C degrees Adjusting the differential for cool stage setting rotate the selector dial to position 7 rotate the adjuster dial counterclockwise to decrease the differential setting and clockwise to in...

Страница 28: ...quipment wear The temperature difference between the two thresholds is called the differential The differential is adjusted in 0 5 degree increments from a minimum setting of 0 5 F 0 5 C to a maximum setting of 10 F 5 C degrees Adjusting the differential for heat stage setting rotate the selector dial to position 8 rotate the adjuster dial counterclockwise to decrease the differential setting and ...

Страница 29: ... ramping rate and clockwise to decrease it The ramping setting is displayed on the MST 5 NOTE When ramping is activated the main set point temperature cannot be manually adjusted Ramping automatically shuts OFF when the minimum temperature limit is reached Example The main set point temperature is set to 70 F and ramping is adjusted to 0 05 F The following day the main set point temperature drops ...

Страница 30: ...rom a minimum display of 13 5 F 10 0 C to a maximum display of 105 0 F 41 0 C If a temperature lower than 13 5 F is recorded Lo is displayed Viewing the lowest temperature recorded rotate the selector dial to position 10 Clearing the low temperature value quickly rotate the adjuster dial counterclockwise then clockwise CLr will be briefly displayed on the MST 5 www monitrol com ...

Страница 31: ...play of 13 5 F 10 0 C to a maximum display of 105 0 F 41 0 C If a temperature higher than 105 0 F is recorded Hi is displayed Displaying the highest temperature recorded rotate the selector dial to position 11 Clearing the high temperature value quickly rotate the adjuster dial counterclockwise then clockwise CLr will be briefly displayed on the MST 5 CHAPTER 3 USER S GUIDE www monitrol com ...

Страница 32: ...is displayed to the nearest 0 1 degree from a minimum display of 13 5 F 10 0 C to a maximum display of 105 0 F 41 0 C If the temperature is lower than 13 5 F Lo is displayed If the temperature is higher than 105 0 F Hi is displayed Viewing the room temperature rotate the selector dial to position 12 Room temperature is displayed on the MST 5 www monitrol com ...

Страница 33: ...d by 1 minute increments from a setting of 1 minute to a maximum setting of 10 minutes Adjusting the stage 1 duty cycle period rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 2 rotate the adjuster dial counterclockwise to decrease the period and clockwise to increase it The stage 1 period ...

Страница 34: ...s entered as a percentage of a 12 minutes period If a fan is used set this value at 100 Adjusting the duty cycle setting rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 4 rotate the adjuster dial counterclockwise to decrease the duty cycle setting and clockwise to increase it The duty cycl...

Страница 35: ...ting the stage 4 heating or cooling mode rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 5 rotate the adjuster dial counterclockwise to set the stage in heating mode and clockwise to to set it in cooling mode The heating or cooling mode is displayed on the MST 5 Cool Heat CHAPTER 3 USER S ...

Страница 36: ...e display if you want to use the stage 5 in cooling mode Adjusting the stage 5 heating or cooling mode rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 6 rotate the adjuster dial counterclockwise to set the stage in heating mode and clockwise to to set it in cooling mode The heating or cool...

Страница 37: ... setting rotate the Selector dial to position 12 rapidly rotate the Adjuster dial back and forth to enter secondary function mode rotate the Selector dial to position 9 rotate the Adjuster dial counterclockwise to decrease the minimum ramping setting clockwise to increase it The minimum ramping setting is displayed on the MST 5 Limit NOTE When the main set point temperature reaches the minimum ram...

Страница 38: ...e alarm is adjusted in 0 5 degree increments from a minimum setting of 32 0 F 18 0 C to a maximum setting of 0 0 F 0 0 C Adjusting the low temperature alarm setting rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 10 rotate the adjuster dial counterclockwise to decrease the setting and cloc...

Страница 39: ...m is adjusted in 0 5 degree increments from a minimum setting of 0 F 0 C to a maximum setting of 32 0 F 18 0 C Adjusting the high temperature alarm rotate the selector dial to position 12 rapidly rotate the adjuster dial back and forth to enter secondary function mode rotate the selector dial to position 11 rotate the adjuster dial counterclockwise to decrease the setting and clockwise to increase...

Страница 40: ...ing and fan or heater Stage 4 and 5 Fan or Heater is operating erratically Verify that the function on position 5 and 6 in secondary mode is correctly adjusted Verify the minimum rating 10mA at 115V or 20mA at 230V Display is blank Verify that the line voltage selector switch is properly set Verify that the 10 pin flat cable between the main board and the faceplate board is connected TROUBLESHOOTI...

Страница 41: ...30V STAGE 3 dry relay contact Not Fused 10 AMP 115V 230V 1 2 HP 115V 1 HP 230V Min Rating 10mA at 115V 20mA at 230V STAGE 4 dry relay contact Not Fused 10 AMP 115V 230V 1 2 HP 115V 1 HP 230V Min Rating 10mA at 115V 20mA at 230V STAGE 5 dry relay contact Not Fused 10 AMP 115V 230V 1 2 HP 115V 1 HP 230V Min Rating 10mA at 115V 20mA at 230V ALARM dry relay contact 2 AMP 30V AC DC SPECIFICATIONS APPEN...

Страница 42: ... C 10 Lo Temperature Alarm 8 F 5 C 11 High Temperature Alarm 20 F 12 C RECORD FORM 2nd Function 1 Main Set Point Temperature 77 F 25 C 2 Stage 1 Duty Cycle Timer ON ON 3 Stage 2 Relative Set Point 4 F 2 C 4 Stage 3 Relative Set Point 6 F 3 C 5 Stage 4 Relative Set Point 8 F 4 C 6 Stage 5 Relative Set Point 10 F 5 C 7 Temperature Differential Heat Stage 2 F 1 C 8 Temperature Differential Cool Stage...

Страница 43: ...ail lightning or any other natural disaster Any unauthorized work modification or repair on this product automatically voids the warranty and disclaims the manufacturer from all responsibility The manufacturer assumes only those obligations set forth herein excluding all other warranties or obligations This warranty stipulates that in all cases the manufacturer shall be liable only for the supply ...

Страница 44: ...MAV MST 5M Ver 1 1 October 1995 Rev July 1997 Rev June 2001 www monitrol com ...

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