Installation – tekmar 261 Boiler Control User Manual

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Installation

CAUTION

Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It is
your responsibility to ensure that this control is safely installed according to all applicable codes and standards. This electronic
control is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed
into the control circuit.

STEP ONE

GETTING READY

Check the contents of this package. If any of the contents listed are missing or damaged, please contact your wholesaler or tekmar
sales representative for assistance.

Type 261 includes:

One Boiler Control 261, One Outdoor Sensor 070, One Universal Sensor 0

82, Data Brochures D 261,

D 070, D 001, Application Brochure A 261.

Note: Carefully read the details of the Sequence of Operation to ensure that you have chosen the proper control for your application.

STEP TWO

MOUNTING THE BASE

Remove the control from its base by pressing down on the release clip in the wiring chamber and sliding the control away from it. The
base is then mounted in accordance with the instructions in the Data Brochure D 001.

STEP THREE

ROUGH-IN WIRING

All electrical wiring terminates in the control base wiring chamber. The base has standard 7/8” (22 mm) knockouts which accept
common wiring hardware and conduit fittings. Before removing the knockouts, check the wiring diagram and select those sections of
the chamber with common voltages. Do not allow the wiring to cross between sections, as the wires will interfere with safety dividers
which should be installed at a later time.

Power must not be applied to any of the wires during the rough-in wiring stage.

• Install the Outdoor Sensor 070 and Boiler Sensor 0

82 according to the instructions in the Data Brochure D 070, and run the wiring

back to the control.

• Run wire from other system components (pump, boilers, etc.) to the control.

• Run wires from the 120 V (ac) power to the control. Use a clean power source to ensure proper operation. Multi-strand 16 AWG

wire is recommended for all 120 V (ac) wiring due to its superior flexibility and ease of installation into the terminals.

STEP FOUR

ELECTRICAL CONNECTIONS TO THE CONTROL

The installer should test to confirm that no voltage is present at any of the wires. Push the control into the base and slide it down until
it snaps firmly into place.

Powered Input Connections

120 V (ac) Power

Connect the 120 V (ac) power supply to the

Power L and Power N terminals (5 and 6).

This connection provides power to the microprocessor and display of the control. As
well, this connection provides power to the

Boil Pmp terminal (7) from the Power L

terminal (5).

Boiler Demand

To generate a boiler demand, a voltage between 24 V (ac) and 240 V (ac) must be
applied across the

Boiler Demand terminals (1 and 2).

Boiler

Demand

24 to 240 V (ac)

120 V (ac)

Power
L