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14
Heat-Timer Corp.
STARTUP SETTINGS
PROGRAM CHANGE SETTINGS
To be able to change the Mini-MOD settings the Program/Run Switch must be set to
Program. The switch is located under the Enclosure Wiring Cover for security. The
Enclosure Wiring Cover can be securely closed using a lock.
STARTUP SEQUENCE
Button: MENU/<System Startup>
•
When powered, the Mini-MOD performs a self-test on its components.
•
After the self-test diagnostics have been successfully completed, the Mini-MOD will
initialize the panel.
•
On the first power up, the System Startup screen will appear after the initialization is
complete. If it doesn't, the Mini-MOD has already been configured.
•
The System Startup menu sets the main parameters like the type of sensor, the type of
output, and the modulating mode.
SENSOR TYPE
Set Point °F, Set Point °C, Reset °F, Reset °C
Button: MENU/<System Startup>/..../Sensor type
•
Reset mode is only available if an outdoor sensor is connected to terminals 25 and 26.
DO NOT select Reset without an outdoor sensor.
•
The same Heat-Timer temperature sensor can display in either °F or °C.
•
If °F is selected, all temperatures and settings will be displayed in degrees Fahrenheit and
the Mini-MOD will operate as a Set Point Control in degrees Fahrenheit.
•
If °C is selected, all temperatures and settings will be displayed in degrees Celsius and
the Mini-MOD will operate as a Set Point Control in degrees Celsius.
•
Set point mode does not require an outdoor sensor. If an outdoor sensor is connected in
Set Point mode it will be used only as an outdoor cutoff point. That is, to turn the boilers
and system pump off.
EMS INPUT MODE (AVAILABLE IN SET POINT ONLY)
Disable, Enable
Button: MENU/<System Startup>/..../EMS Input Mode
•
This allows the Mini-MOD to receive an external set point from an EMS/BMS system.
•
You must select the 4mA (min) and 20 mA (max) Set Points in the following screen.
•
The 4mA can be set to any temperature between 70ºF to 200ºF.
•
The 20mA can be set to any temperature between 90ºF to 240ºF. However, the minimum
must be 20ºF higher than the 4mA setting.
•
Connect the 4-20mA EMS Control Interface to the Mini-MOD RS485 connection.
SELECTING THE OUTPUT TYPE
4-20mA, 0-5V, 0-10V, 1-5V, or 2-10V Outputs
Button: MENU/<System Startup>/..../Output A type/Output B type
•
Outputs can be configured for 4-20mA operation (current) or the voltage range can be
selected (0-5V, 0-10V, 1-5V, 2-10V).
•
Check the modulating motor to determine its control requirements.
•
Select the appropriate Output Type for each of the boilers. The Mini-MOD can have a
different Output type for each boiler.
A good practice after performing any Startup menu modifications is to
check all operating settings and adjustments to match the new settings.
Default: Set Point ◦F
Default: Disable
Default: 4-20mA
CAUTION
PROGRAM
-------- SYSTEM STARTUP ------
(START)
to continue
BACK
---------- SENSOR TYPE ---------
Set Point
Set Point
Reset
F
Reset
C
BACK
------ EMS INPUT MODE -------
Disable
Enable
BACK
------ EMS 4ma SETPOINT------
120
[
BACK
------- OUTPUT A TYPE --------
4-20ma
0-10v
0-5v
2-10v
1-5v
BACK
RUN
START
F
C
SAVE
SAVE
F
]
SAVE
SAVE
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