Timeguard TRT033N Operating Instructions Manual

Installation & Operating Instructions

Digital Room Thermostat

with Night Set-back

Model: TRT033N

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1. General Information

These instructions should be read carefully and retained for further reference
and maintenance.

2. Safety

• Before installation or maintenance, ensure the mains supply to the
thermostat is switched off and the circuit supply fuses are removed
or the circuit breaker turned off.

• It is recommended that a qualified electrician is consulted or used for the
installation of this thermostat and install in accordance with the current
IEE wiring and Building Regulations.

• Check that the total load on the circuit including when this thermostat is
fitted does not exceed the rating of the circuit cable, fuse or circuit breaker.

• To clean use a clean dry cloth only. Do not use any liquid cleaners.

3. Technical Specifications

• 230V AC 50 Hz

• This thermostat is of Class ll Construction and must not be earthed

• Switch Rating: 3(1)A

• Switch Type: Single pole, voltage free changeover

contacts

• Connection Type: 2 wire

• Installation Type: Surface mount with wall plate

• Micro Disconnection: Type 1.B control action

• Operating Temperature Range: 0°C to +40°C

• Set Temperature Range: 10°C to 30°C

• Temperature Swing Adjuster: +/- 0.5°C or 1.0°C set by DIP switch

• Frost Protection Mode: 5°C

• Night Set Back Mode: Lowers set temperature by

4°C for 1-9 hours

• PID Adjustment: ON or OFF set by DIP switch

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3

• Boiler Type Adjustment: 3CYC = Gas, 6CYC = Oil, set by DIP switch

• Illumination: Blue LED illuminated on setting for button

surrounds and display

• Batteries: 2x 1.5V AA

• CE Compliant

• Dimensions (H x W x D): 90 x 95 x 30mm

TRT033N Front View

Digital room temperature display
(illuminated on setting)

10°C to 30°C
set temperature
range

The heating symbol
will show when heat
is demanded

Night set-back (reduces temperature

by 4°C, 1-9 hours recall) and frost

protection setting mode

+/- setting

buttons

(illuminated

on setting)

Flip down cover for display battery

compartment and reset button –

uses 2x 1.5V AA batteries supplied

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4. Siting

• The TRT033N must be sited where it will not be influenced
by heat sources, for example above a radiator or a television or
a refrigerator/freezer or in direct sunlight or subjected to draughts.

• The product requires air circulation, so do not position above
or below shelving or other wall mounted obstacles.

• It should be mounted approximately 1.5 metres above floor level.

5. Installation

5.1 Ensure the mains supply is switched off and the circuit supply fuses

are removed or the circuit breaker turned off.

5.2 Remove the wall plate from the unit, by undoing the retaining screws,

and pivoting the bottom of the unit outwards. The TRT033N body
can then be lifted off.

5.3 Mark the position of the mounting holes on the wall using the wall plate

as a template. Drill out the mounting holes taking care to avoid any
joists, electrical cables or water/gas pipes that may be hidden beneath
the surface. Insert the rawl plugs into the holes.

5.4 Pass the 230V 50Hz mains supply and load cables through the opening

of the wall plate. Allow sufficient excess cable to wire up the unit, but
not too much to make it difficult to close the unit to the wall plate.

5.5 Fix the wall plate to the wall using the correct mounting screws for the

rawl plugs installed. The retaining screws which secure the unit to the
wall plate should be at the bottom.

5.6 Terminate the cables into the terminal block ensuring correct polarity

is observed and that all bare conductors are sleeved (See section 6.
Connection Diagram). Make sure that the curved washer grips
the conductor.

5.7 To insert batteries into the unit, first lower hinged flip down cover

and carefully lever the battery holder cover off. Insert the 2x AA
batteries supplied into the battery holder maintaining the correct polarity,
as shown in the base of the battery holder. Re-position the battery holder
cover and click into place.