ELEKTRA B00HDDAA9S OJ Microline Thermostat Instructions

: June 5, 2024
: ELEKTRA

Table of Contents

TECHNICAL DATA
CLASSIFICATION
MOUNTING OF THERMOSTAT (fig. 1 and 3)
MOUNTING OF THERMOSTAT IN ELKO FRAME (fig. 1, 2, and 3)
TEMPERATURE SETTING
THERMOSTAT ADJUSTMENT
Documents / Resources
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)

INSTRUCTIONS

Electronic thermostat with Elko/Eljo ram for mounting in the standard wall box. The thermostat is adjustable to the required temperature from +5/+35˚C. The LED shows that the heat is ON.

Including:

Floor sensor
Loose base plate Elko
Mounted with Eljo frame and base plate

CE MARKING
OJ Electronics A/S declare under their own the responsibility that this product meets the requirements of the European Council’s directive 89/336 and successive modifications
as to electro-magnetic compatibility and the Council directive 73/23 as to electrical equipment to be applied within certain voltage ranges.

Standards applied
EN 61000-6-3, EN 61000-6-2,
EN 60 730-1 and EN 60730-2-9.

The product may only be energized when the entire installation meets the current directive requirements.

When the product is installed according to this instructions guide and the current installation guidelines, it is covered by a factory guarantee.

If the product has been exposed to damage e.g. in transport, it must be checked and overhauled by qualified staff before the product is connected to the power.

TECHNICAL DATA

Voltage . . . . . . . . . . . . .230V AC ±10%, 50 Hz
Current consumption . . . . . . . . . . . . . . . . . .6 VA
Max. fuse . . . . . . . . . . . . . . . . . . . . . . . . . . .16A
Built-in switch . . . . . . . . . . . . . . . . . . . . .2-pole, 16A
Output relay – make contact . . . . . . . . . . .SPST-NO
Load . . . . . . . . . . . . . . . . . . . . . . . . . .. . .max. 14A, 3220W
Regulation principle . . . . . . . . . . . . . . . .ON/OFF
Temperature scale . . . . . . . . . . . . . . . . . . .+5/+35°C
Difference/hysteresis . . . . . . . . . . . . . . . . .0.4°C
Scale limitation . . . . . . . . . . . . . . . . . .min./max.
Error circuit fuse at . . . . . . . . . . . . . . . . . .-20°C
Ambient temperature . . . . . . . . . . . . . . .0/+50°C
Dimensions HxBxD . . . . . . . . . . .84x84x58 mm
Protection: . . . . . . . . . . . . . . . . . . . . . . . . . .IP21

The thermostat is free of maintenance.

CLASSIFICATION

The product is a class II device (reinforced insulation) and the product must be connected to the following conductors:

Phase (F/L2)
Neutral (N/L1) PE Earth

MOUNTING OF SENSOR

Floor sensor: Placed in installation pipe which is embedded in the floor. The pipe is thickened in the end and placed as high as possible in the concrete layer.

Sensor cable may be extended up to 50 m with a separate cable for power current. Two conductors in a multi conducting cable, which e.g. is used for the supply of heating cable, may not be used. Voltage signals, which may disturb the function of the thermostat, may occur. If the cable is used with the screen, the screen may not be connected to the ground but must be connected to terminal 6.

The best installation is attained with a separate cable for the sensor, which is then mounted in a separate conduit.

OTC contains a sensor control that interrupts the heating in case of disconnected or shortcircuited sensors. Scheme with sensor values (fig. 4).

MOUNTING OF THERMOSTAT (fig. 1 and 3)

Remove the control knob (A) carefully with a screwdriver.
Screw (B) should be unscrewed and the cover lifted off.
Electrical connections can be made as shown in the wiring diagram (fig. 3).
The thermostat can now be filled into the wall box.
Frame and cover are mounted.
Thermostat knob (A) is replaced.

MOUNTING OF THERMOSTAT IN ELKO FRAME (fig. 1, 2, and 3)

If the thermostat is to be mounted in an Elko frame the enclosed Elko housing is to be used.

Remove the control knob (A) carefully with a screwdriver.
The Eljo housing is removed by loosening the screw (B). Press out the lens (D) (press from the backside of the housing) and mount it in reverse order into the Elko housing.
Electrical connections can be made as shown in the wiring diagram (fig. 3).
The thermostat can now be filled into the wall box.
Thermostat knob (A) is replaced.

If a min./max. limitation of the temperature setting is required, the blue and red locking rings and the locking mechanism (C) from the Eljo housing can be used. See also the section MAX./MIN. TEMPERATURE.

TEMPERATURE SETTING

OTC-1991 has a scale range of +5/+35˚C. To assist the adjustment, the thermostat has a LED that will glow RED when the heating is ON. The thermostat should be set to maximum temperature setting until the desired temperature of the room or floor is achieved. The control knob should then be turned back until the LED goes out. Fine adjustments can be made over the next 1/2 day to suit individual requirements.

THERMOSTAT ADJUSTMENT

When the room temperature has been stabilized, the thermostat set position may be adjusted to match the actual room temperature. Measure the temperature of the room with an accurate thermometer. Remove the control knob and reposition it so that the indicated temperature line shows the same as the measured temperature. This adjustment can be done in steps of 3°C.

MAX./MIN. TEMPERATURE (fig. 1)
A locking mechanism is positioned behind the control knob to limit the amount of adjustment possible. By loosening the little screw (C), the scale range can be locked, e.g. between 20˚C and 25˚C. The red ring indicates the maximum temperature and the blue ring indicates the minimum temperature.

FIGURES
Fig. 1 Thermostat cover with knob
Fig. 2 Eljo housing
Fig. 3 Connection of thermostat
Fig. 4 Scheme with temperature and sensor values

ELEKTRA B00HDDAA9S OJ Microline Thermostat - FIG 1