tekmar 667 Snow Detector & Melting Control User Manual

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Section F1

General Idling

Operation

Section F: Idling Operation

When the snow melting system starts from a cold temperature, the time required for the system to reach the melting temperature may
be excessive. To decrease this start up time, the 667 has an idling feature which can maintain the system at a lower temperature.
This feature is also useful for preventing frost and light ice formation. The IDLING setting in the Adjust menu sets the slab surface
temperature while the control is in the idling mode. When in the idling mode, IDLING is displayed in the STATUS item while in the View
menu. If idling is not desirable, the IDLING setting may be set to OFF.

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 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. Do not open the control. Refer to qualified personnel for servicing. Opening voids warranty and can result in
damage to the equipment and possibly even personal injury.

STEP ONE

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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 667 includes:

One Snow Detector & Melting Control 667, One Outdoor Sensor 070, Three Universal Sensors 071, Data

Brochures D 667, D 070, D 001, User Brochure U 667, Application Brochure A 667, Essay E 021.

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

your application.

STEP TWO

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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

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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.

•

All wires are to be stripped to a length of 3/8 in (9mm) to ensure proper connection to the control.

• Install the Outdoor Sensor 070, Boiler Sensor 071 and Mixing Sensor(s) 071 according to the installation instructions in the Data

Brochure D 070 and run the wiring back to the control.

• Install the Snow / Ice Sensor 090 according to the installation instructions in the Data Brochure D 090 and run the wiring back

to the control. See Data Brochure D 090 for very important details on sensor location and installation.

• If a Slab Sensor is used, install the slab sensor according to the installation instructions in the Data Brochure D 079 and run the

wiring back to the control. See page 14 for very important details on sensor location and installation.

• If a Remote Display Module (RDM) 040 is used, install the RDM according to the installation instructions in the Data Brochure

D 040 and run the wiring back to the control.

• If a Remote Start / Stop Module 039 is used, install the module according to the installation instructions in the Data Brochure

D 039 and run the wiring back to the control.

Section F1: General Idling Operation

Installation