tekmar 420 Boiler Reset Module User Manual
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© 2007
D 420 - 08/07
Access Level
Boil On-Off / Mod
The Boil On-Off / Mod DIP switch selects whether the
control operates an On-Off boiler or the firing rate of a
Modulating boiler.
•
• If set to Boil On-Off, the control operates an On-Off
boiler.
•
• If set to Mod, the control operates a Modulating boiler.
tekmar Stager / Off
Use the tekmar Stager / Off DIP switch when a tekmar
staging control is be connected to the 420 in order to
operate multiple boilers. A tekmar stager may include Boiler
Controls 264, 265, and 268.
•
• If a tekmar Stager is installed, set to tekmar Stager. The
420 will then provide the stager with a target temperature
via a 0-10 V (dc) signal. When the tekmar Stager / Off
DIP switch is set to tekmar Stager, the Boiler Sensor
DIP switch must be set to Sup.
•
• If a tekmar Stager is not installed, set to Off.
The Access Level restricts the number of Menus, Items,
and Adjustments that can be accessed by the user. The
Access Level setting is found in the Miscellaneous (MISC)
menu. Select the appropriate access level for the people
who work with the control on a regular basis.
There are two Access Level settings:
•
• Installer (InS): This is the factory default setting. This
access level is sufficient for the normal set up of the
control.
•
• Advanced (Ad): All of the control settings are available
to the user.
In the following menu tables, the access level the item is
visible in is shown in the access column.