Controls, Indicators, And Connections - heat-timer MSI OTM Installation And Operation Manual

Controls, Indicators, and Connections
Figure 1: MSI OTM Controls, Indicators, and Connections
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2
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Item
1 Pump Indicator
When lit, indicates the pump is activated. The OTM
Display will also show the level of oil in the tank, in
inches ("Level = xxx") and "Pump Activates".
2 Alarm Indicator
When lit, indicates the oil level has dropped below the
selected alarm level threshold. The OTM Display will
also flash "Alarm".
3 OTM Display
Displays the current level of oil in the tank in normal
operation, alarm conditions, and available menu
selections when in programming mode.
4 Menu "Back" Button
When pressed in programming mode, the user is
returned to the previous menu screen. To exit
programming mode, press the "Back" button until the
main screen showing the level of oil remaining in the
tank (in inches) is displayed.
5 Menu "Up" and "Down" Navigation Arrows
Used to navigate through the menu selections when
in programming mode.
Heat‐Timer Corp.
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Description
Controls, Indicators, and Connections 3
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5
6
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Item
6 Menu/Set button
When pressed, activates programming mode. After
programming mode is activated, pressing this button
will set selected menu options. Refer to "Programming
the OTM" on page 10.
7 120Vac Power Input Connection
(Terminal 1 ‐ Line, Terminal 2 ‐ Neutral,
Terminal 3 ‐ Earth Ground)
8 Alarm Connection
(Terminal 4 ‐ Alarm Output, Terminal 5 ‐ Alarm Contact)
9 MSI Hub Connection
(Terminal 6 ‐ M+, Terminal 7 ‐ M‐)
10 Bulkhead Fitting
Connects the OTM to the oil tank level probe.
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Description
059411-00 Rev. A
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