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MST-1

USER’S MANUAL

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www,monitrol.com

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Summary of Contents for MST-1

Page 1: ...MST 1 USER S MANUAL A L A R M A L A R M HI F2 LO ADJUST Varifan MST 1 TIMER on off reduc per day 9 L I M IT 8 8 8 9 9 P E R I O D DIFF COO L H E A T www monitrol com...

Page 2: ...s 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...

Page 3: ...Switch 11 2 4 Connection Procedure 11 2 4 1 Input Power 11 2 4 1 1 115 VAC 11 2 4 1 2 230 VAC 12 2 4 2 Stage 1 12 2 5 Temperature Probes 12 2 5 1 Single Temperature Probe 12 2 5 2 Averaging 12 2 6 Al...

Page 4: ...d High Temperature 24 Ambient Room Temperature Display 25 SECONDARY FUNCTIONS Heating or cooling mode 26 Duty cycle period 27 Minimum Ramping 28 Low Temperature Alarm 29 High Temperature Alarm 30 APPE...

Page 5: ...The MST product line offers these features Heating or cooling mode Hi Lo temperature indication Automatic temperature reduction ramping Computer compatible with RCM 40 The MST 1 provides microprocesso...

Page 6: ...s 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...

Page 7: ...settings on the MST 1 are relative to the main set point temperature AMBIENT TEMPERATURE The actual temperature of the room RAMPING An automatic daily reduction in the main set point and all temperatu...

Page 8: ...Page 8 MST 1 www monitrol com...

Page 9: ...lled temperature probe model number 2004 1KLT 2 cable fasteners or fuses 1 User s manual The following optional items may be included 3 additional temperature probes for temperature averaging 1 specia...

Page 10: ...and adapts the control panel for 115 VAC or 230 VAC line voltage Refer to Figures 1 and 2 To limit the unit s exposure to noxious gases install the unit in a hallway Make certain that the unit is moun...

Page 11: ...In this case the temperature will decrease faster to the main set point Heat inverse logic 2 4 CONNECTION PROCEDURE For the connection procedures which follow refer to Figures 1 and 2 2 4 1 Input powe...

Page 12: ...probe connections are illustrated in Figure 3 while temperature averaging connections are illustrated in Figure 4 2 5 1 Single Temperature Probe Install a single temperature probe in an area that bes...

Page 13: ...g of the MST 1 using the four screws previously removed Set Selector knob to position 12 Upon power up the unit will test it s display by briefly lighting all the segments of it s LED Make certain tha...

Page 14: ...Page 14 MST 1 Fig 1 Wiring diagram for One Fan Fig 2 Wiring diagram for One heating unit www monitrol com...

Page 15: ...Page 15 Note for figures 1 and 2 Power cut and protection devices in case of overload 1 Fig 3 Temperature Probe and Alarm Wiring CHAPTER 2 INSTALLATION www monitrol com...

Page 16: ...Page 16 MST 1 Fig 4 Temperature Averaging Probe Connection Fig 5 Main Board Terminal Blocks Switches and Fuses www monitrol com...

Page 17: ...s window displays the operational status of Stage 1 via one LED shown above in LED win dow When illuminated the LED indicates that the stage is operating The second LED lights to indicate a low or hig...

Page 18: ...lays a blinking value Function 12 displays ambient temperature The 5 secondary functions are 2 Stage 1 Heating or cooling mode 3 Duty cycle period 9 Ramping minimum temperature limit 10 Low temperatur...

Page 19: ...rom 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 Adjustor dial counterclockwise t...

Page 20: ...duces equipment wear The temperature difference between the two thresholds is 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...

Page 21: ...ts from a minimum setting of 5 up to a maximum setting of 100 corresponding to continuous operation Adjusting the duty cycle setting rotate the Selector dial to position 3 rotate the Adjustor dial cou...

Page 22: ...decrease the ramping rate clockwise to increase it The ramping setting is displayed on the MST 1 NOTE When ramping is activated or enabled the main set point temperature cannot be manually adjusted Ra...

Page 23: ...splay 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 positio...

Page 24: ...a minimum display 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 Selec...

Page 25: ...yed to the nearest 0 5 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 41 0 F Lo is displayed If the temperature is higher than 1...

Page 26: ...play if you want to use the stage 1 in cooling mode Adjusting the stage 1 heating or cooling mode rotate the Selector dial to position 12 rapidly rotate the Adjustor dial back and forth to enter secon...

Page 27: ...ts 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 Adjustor dial back and forth to ente...

Page 28: ...inimum ramping setting rotate the Selector dial to position 12 rapidly rotate the Adjustor dial back and forth to enter secondary function mode rotate the Selector dial to position 9 rotate the Adjust...

Page 29: ...djusted 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...

Page 30: ...emperature alarm 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...

Page 31: ...ted Fan s or heater not operating Verify whether the fan LED is on If LED is on yet fan or heater is not operating verify wiring fan and fuse Refer Figure 5 for fuse location If fuse is blown replace...

Page 32: ...30V Min Rating 10mA at 115V 20mA at 230V ALARM dry relay contact 2 A 30V AC DC SPECIFICATIONS Relay will not function properly if load is smaller than the minimum value Storage temperature 20 to 55 C...

Page 33: ...e period 2min 2min 9 Minimum Ramping Limit 65 F 18 C 10 Lo Temperature Limit 9 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 Diffe...

Page 34: ...Page 34 MST 1 www monitrol com...

Page 35: ...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 man...

Page 36: ...MAV MST 1M Ver 1 02 November 20 2012 www monitrol com...

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