Varifan MST-1 User manual

MST-1
USER’S MANUAL
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MST-1
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.
WARNINGS 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 twice a year.
Fuse verification and replacement, as well as the proper
setting of control values shall be the responsibility of the
owner of this equipment.
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CHAPTER 1 - INTRODUCTION
1. General ...............................................................................5
1.1 Description...........................................................................5
Definition of terms.............................................................................7
CHAPTER 2 - INSTALLATION
2.1 Unpacking............................................................................9
2.2 Mounting ...........................................................................10
2.3 Switch Settings ..................................................................10
2.3.1 Line Voltage Selector Switch.............................................10
2.3.2 Software Settings 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 Alarm..................................................................................13
2.7 Powering Up ......................................................................13
CHAPTER 3 - USER’S GUIDE
LED Status Window...........................................................17
Control Dials ......................................................................17
PRIMARY FUNCTIONS
Main Set Point Temperature..............................................19
Stage 1 Differential ............................................................20
Stage 1 Duty Cycle timer...................................................21
TABLE OF CONTENTS
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MST-1
CONTENTS CONTINUED...
Ramping ............................................................................ 22
Record Low Temperature.................................................. 23
Record 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
APPENDIX
Troubleshooting.............................................................................. 31
Specifications.................................................................................. 32
Record Form................................................................................... 33
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CHAPTER 1 - INTRODUCTION
1. GENERAL
This document provides a description of the MST-1 control
panel. This document is organized as follows:
• Introduction
• Installation
• User’s Guide
• Appendix
1.1 DESCRIPTION
Congratulations on the purchase of your MST-1
environmental control system. The MST-1 product line
provides you with full control over temperature, air flow,
and heat resulting in a good air quality.
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 microprocessor control over a single
stage output.
This stage controls a single speed fan or a heater. To cool
the room when the temperature is higher than the main set
point, use the MST-1 in cooling mode. Or to heat the room
when the temperature is lower than the main set point, use
the control in heating mode. In addition, the first stage may
be programmed to cycle on and off.
CHAPTER 1 - INTRODUCTION
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MST-1
DESCRIPTION CONTINUED...
The MST-1 provides you with full control over one stage
via the use of an easy to follow display panel. All
programmable features can be customized to meet your
requirements. The MST-1 keeps you constantly informed
by displaying the status of all of its outputs as well as the
ambient temperature.
Air quality is ensured by the 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 control panel
output is fused, and all programmable settings are
maintained whether or not the MST-1 is powered.
The MST-1 provides an automatic constant temperature
reduction (ramping) feature for your maturing livestock. A
built in low temperature safety factor prevents
temperatures reaching dangerous limits.
With MST-1 in control of your climate, you are assured of
good air quality.
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MAIN SET POINT
The desired room temperature. Other temperature 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
temperature settings relative to this.
CHAPTER 1 - INTRODUCTION
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MST-1
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CHAPTER 2 - INSTALLATION
2.1 UNPACKING
Unpack the MST-1 from its box and inspect contents for
damage. Should the contents appear to be damaged,
contact your local distributor for return material procedures.
The package should contain the following standard items:
• 1 MST-1 control .
• 1 installed 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 special temperature probe (model number 2001-
1KHT).
The manufacturer recommends that the installation
instructions which follow be adhered to as closely as
possible, and all work be performed by a certified
electrician. Failure to do so may void the warranty!
CHAPTER 2 - INSTALLATION
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MST-1
2.2 MOUNTING
Mount the MST-1 to the wall using the mounting holes
located on the flange of the control housing.
Once the MST-1 is in place, use a screwdriver to remove
the four screws holding the faceplate to the housing.
2.3 SWITCH SETTINGS
The MST-1 is configured for a variety of options via two
switches as follows:
2.3.1 - Line Voltage Selector Switch
This switch is located on the surface of the main (bottom)
board 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 mounted right side up with
the cable entry holes facing down.
The MST-1 will operate in a temperature range of 32°F -
120 °F (0 °C - 50 °C).
The enclosure is watertight, it is not splash proof or
immersion proof. DO NOT WATER the control. Cover the
control carefully with plastic when you are cleaning the
room.
* It is prohibited to use overhead cables outside the
building.
Mounting hardware is not shipped with the unit.
230V
115V
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