tekmar 268 Boiler Control - Manual (Page 22)

© 2010 D 268 - 11/10 22 of 32
The control’s exterior can be cleaned using a damp cloth. Moisten the cloth with water and wring out prior to wiping the control. Do
not use solvents or cleaning solutions.
GENERAL
The DIP switch settings on the control are very important and should
be set to the appropriate settings prior to making any adjustments
to the control through the User Interface. The DIP switch settings
change the items that are available to be viewed and / or adjusted in
the User Interface.
If a DIP switch is changed while the control is powered up, the
control responds to the change in setting by returning the display to
the VIEW menu.
External Input / Stand Alone
The External Input / Stand Alone DIP switch selects whether a tekmar
Outdoor Sensor 070 or an external 0 - 10 V (dc) input signal is to be
connected to the Com – and the Out + terminals (1 and 4).
Advanced / Installer
The Adv / Installer DIP switch selects the access level of the control.
In the Installer access level, a limited number of items may be viewed
and / or adjusted. In the Advanced access level, all items may be
viewed and / or adjusted.
Alert / Combustion Air
The Alert / C.A. DIP switch selects whether a combustion air
damper or alert device is to be connected to the C.A. / Alert
terminals (12 and 13).
DIP Switches
Cleaning The Control
Dip Switch Settings
1 2 3
4
Com
Boil
Ret
Out
5
UnO
Sw Boil
Sup
Connecting The Control
Make sure all power to the devices and terminal blocks is off, and remove any remaining
jumpers from the terminals.
Reconnect the terminal blocks to the control by carefully aligning them with their
respective headers on the control, and then pushing the terminal blocks into the headers.
The terminal blocks should snap firmly into place.
Install the supplied safety dividers between the unpowered sensor inputs and the
powered or 115 V (ac) wiring chambers.
Apply power to the control. The operation of the control on power up is described in the
Sequence of Operation section of the brochure.