MS Electronics E8210, E8210/24V Product Manual

Product Guide

E8210

E8210/24V

today, tomorrow and in the future

mselectronics.co.uk

Set-Back/Set-Forward Thermostat

energy saving controls

2

Issue 1.0

Product Overview

The E8210 thermostat combines the functionality of a standard set-back thermostat with a set-forward
thermostat all in a single wall-plate style of unit. This gives the end-user the ability to select between

1 of 3 di󰀨erent xed temperature levels (Low, Med, High) to allow greater end-user control when
compared to a set-back thermostat, but its tamperproof features prevent unauthorised modication of

the temperature setpoints.

The medium level temperature setpoint (“Med” mode) is adjustable between +12°C and +26°C while
the “High” and “Low” modes are adjustable between 0°C and 7°C above and below the “Med” setpoint.
The end-user is able to select between these 3 modes via the touch-sensitive pushbutton. LED

indicators on the front plate illuminate to display which mode the thermostat is operating in.

All setpoints are combined with an adjustable temperature hysteresis (di󰀨erential) which is adjustable to
anything between 0.25°C and 4°C.

Product Wiring

1. Power to the thermostat is provided via the 2-way terminal block.

• Product codes without any su󰀩x are mains powered using the terminals labelled L and N

(230V AC, 50Hz).

• Product codes with the “/24V” su󰀩x are 24V powered using the terminals labelled 24V (24V

AC or DC).

2. A voltage-free changeover relay output capable of switching loads of up to 10A, 250V AC (resistive)

is provided by the thermostat at the “NC, COM, NO” terminals.

3. The Common “COM” terminal is connected to the Normally Open “NO” terminal when the sensed
room temperature is above the selected temperature.

4. Conversely, it is connected to the Normally Closed “NC” terminal when the room temperature is

sensed to be below the selected temperature.

Figure 1 Typical wiring example

Ensure the electrical supply is isolated before making any connections or adjustments.

!

All electrical installation and maintenance must be carried out by a competent person. If in doubt, consult a
qualied electrician. Any new wiring must be carried out by qualied personnel in accordance with the current
edition of the IET Wiring Regulations (BS7671), or those specically applicable to your area.

!