tekmar 156 Difference Setpoint Control - Manual (Page 2)

© 2010 D 156 - 06/10 2 of 12
How to Use the Data Brochure
Table of Contents
This brochure is organized into three main sections.
They are: 1) Sequence of Operation, 2) Installation, and
3) Display Menus.
The Display Menus section of this brochure describes the
various items that are adjusted and displayed by the control.
The control functions of each adjustable item are described
in the Sequence of Operation.
User Interface ............................................................... 2
Display and Symbol Description ................................... 3
Sequence of Operation ................................................. 3
Powering up the Control ............................................... 3
Setpoint Operation ........................................................ 3
ΔT Setpoint ................................................................... 4
Maximum Storage Setpoint .......................................... 4
Minimum Source Setpoint ............................................ 4
Using ΔT•hours to Calculate Heat Transfer .................. 5
Temperature Monitoring ................................................ 5
Installation .................................................................... 5
Display Menus .............................................................. 8
Default Menu ................................................................ 8
Program Menu ............................................................ 10
Error Messages .......................................................... 11
Technical Data ............................................................ 12
Limited Warranty ........................................................ 12
The 156 uses a Liquid Crystal Display (LCD) as the method
of supplying information. Use the LCD in order to set up
and monitor the operation of your system. The 156 has
three push buttons (Item, ▲, ▼) for selecting, viewing, and
adjusting settings. When programming the control, record
settings in the PRGM menu table which is found in the
second half of this brochure.
Item
The selected item will be displayed using a pointer in the
display. To view the next available item, press and release
the Item button. Once you have reached the last available
item, pressing and releasing the Item button will return the
display to the first item.
Adjust
To make an adjustment to a setting in the control, press and
hold simultaneously for 1 second all three (3) buttons. The
display will then show the word PRGM on the left side of the
screen. Then select the desired item using the Item button.
Finally, use the ▲ or ▼ button to make the adjustment.
View Current Setpoints
While viewing temperatures, a quick and easy way to view
current setpoints is to press and hold either the Item, ▲,
or ▼ button.
Press and hold the Item button to view the current ΔT
Setpoint.
Press and hold the ▲ button to view the current Minimum
Source Setpoint.
Press and hold the ▼ button to view the current Maximum
Storage Setpoint.
User Interface
Item
Item