ESI ESRTD3, ESRTD2 Installation Instructions Manual

ESRTD3

Digital Room
Thermostat

Installation Instructions

Thank you for choosing ESi Controls.

All our products are tested in the UK so we are
confident this product will reach you in perfect
condition and give you many years of service.
However, for additional peace of mind, we
recommend you register your product online at
www.esicontrols.co.uk/warranty for your
extended warranty.

2

3

Installation Instructions

Technical Data 6

Installation Instructions

Installation Safety Instructions 7
Maintenance 7
Safety Notice 8
Wiring Diagram 8
Mounting the Digital Room Thermostat 9
DIP Switch Settings - Heating 10
Heating Mode 10

Contents

4

5

Installation Instructions

6

Fixing Easy Fit Back Plate

Sensing Element Electronic

Power Supply 230VAC, 50Hz

Switch Action 3(1)A 230VAC

Temperature Setting Range 5°C to 30°C

Current rating Maxiumum 3(1)Amp

Terminal Differential <0.6°C at 4°/hour

Switch Type SPST

Dimensions L: 85mm x H: 85mm x D: 35mm

Complies with EN60730-1, EN60730-2.7,

EMC Directive 2004/108/EC,
LVD Directive 2006/95/EC

Technical data

7

The unit must be installed by a suitably qualified person in
accordance with the latest IEE Wiring Regulations.

Isolate mains supply before commencing installation. Please
read all instructions before proceeding.

Ensure that the fixed wiring connections to the mains supply
is via a fuse rated at not more than 6 amps and class ‘A’
switch having a contact separation of a minimum of 3mm
in all poles. The recommended cable sizes are 1.0mm sqr or

1.5mm sqr. No earth connection is required as the product is
double insulated but ensure continuity of earth throughout
the system.

Maintenance

Always isolate the mains supply before commencing any
work, servicing or maintenance on the system. And please
read all instructions before proceeding.

Arrange for an annual maintenance and inspection schedule
to be carried out by a competent person on every part of the
heating and hot water system.

Installation Safety Instructions

8

Safety Notice

WARNING!

Always isolate the AC mains supply before installing.
this product must be fitted by a qualified person, and
installation must comply with the guidance provided in
the current editions of BS767 (IEE wiring regulations)
and part “P” of the building regulations.

Wiring Diagram

N.B. 230VAC 3(1) A. This product requires a neutral

1.0-2.5mm

2

6mm MAX

N N/OL

9

Mounting the Digital Room Thermostat

1. Position the Thermostat about 1.5m above floor
level, in a location where the thermostat is accessible,
reasonably lit and free from extremes of temperature
and draughts. Do not position the thermostat near
sources of heat, such as radiators, lights, TV, direct
sunlight or on an outside wall.

2. Loosen the screws on the back-plate and remove from
the thermostat.

3. Fix the back-plate, terminals at the top, either directly
onto a flat wall using wall plugs and screws or on a flush
mounting single conduit box. Route the wires through
the back of the thermostat and fit the wires to the wall­plate in accordance with the relevant diagram shown
overleaf and in accordance with I.E.E. regulations

4. Select personal options by referring to DIP switch menu
(See page 10).

5. Fit the thermostat onto back-plate, and tighten the
screws.

6. Ensure an appropriate fuse is fitted to the circuit before
reconnecting to the mains supply (3 Amp usually).

1.5m

10

DIP Switch Settings - Heating

Heating Mode

Option to switch to:

1. Chronopropportional (Chrono)

2. 3 or 6 cycles (Chrono on only)

3. °F or °C

HEAT

COMP DELAY (TPI) OFF COMP DELAY (TPI) ON

6 CYCLES 3 CYCLES

DELAYED START OFF DELAYED START ON

11

WARNING: Interference with sealed parts renders the
guarantee void.

In the interests of continuous product improvement we reserve
the right to alter designs, specifications and materials without
prior notice and cannot accept liability for errors.

We are continuously developing our products to
bring you the very latest in energy saving technology
and simplicity. However, should you have any questions
setting up your controls please email us at
[e-mail] or for technical queries call
us on our dedicated technical helpline 07539 117468.

Version 5.5

© ESi Controls Limited 2017