1
TECHNICAL SPECIFICATION
Power Supply
: 2 x AA/MN1500/LR6 high quality
alkaline batteries
Switch Action: 1 x SPDT, Type 1B
Switch Rating
: 220/240Vac, 50/60Hz, 6(2)A
Enclosure Rating
: IP20
Max. Ambient Temp.
: 45°C
Temperature Range
: 5-30°C
Designed to meet BS EN60730-2-9
Overall Dimensions
: 98mm wide, 81mm high, 34mm wide
Control Pollution Situation : Degree 2
Ball Pressure Test
: 75°C
Rated Impulse Voltage
: 2.5Kv
RT1
Electronic Room Thermostat with Digital Display
Battery Powered (with voltage free contacts), for the
control of Domestic Central Heating
INSTALLATION & USER INSTRUCTIONS
This product complies with the following EC Directives:
Electro-Magnetic Compatibility Directive.
(EMC)
(89\336\EEC), (92\31\EEC)
Low Voltage Directive.
(LVD)
(73\23\EEC), (93\68\EEC)
Fig 1. Fixing centre and clearances
FEATURES
●
Clear easy to read display shows set temperature and actual
temperature.
●
Simple temperature adjustments using two buttons
●
Ideal replacement for existing room thermostat.
●
Easy to use manually selected night setback feature which
remains in Night mode until manually returned to Day.
●
Selectable "Off" function allows heating to be turned off if
required, not just turned down.
●
Battery operated. Ideal for low voltage control circuits, e.g.
some combi-boilers, as well as for mains voltage circuits.
Batteries can be changed without loss of programme.
●
Wiring conversion chart for common room thermostats
included.
Switched
Output
Live
Input
ON
OFF
COM
3
2
1
Fig. 2 Terminals on
rear of unit
NEW INSTALLATION
Choose a fixing position where the thermostat will sense the room
temperature without being affected by draughts or heat sources
such as radiators, open fires or direct sunlight. Fix at height of
approximately 1.5 metres from the floor.
Cable entry is from behind if fitted to a single gang flush box, or
from above, below or from the left if surface fixed cable is used.
Fig.1. shows fixing hole dimensions and the clearance required for
the removal of the sliding cover, and for air flow over the sensor.
Use the M3.5 screws provided to fix the thermostat to a flush box,
or No.6 woodscrews and wall plugs provided to fix the unit directly
to the wall.
REPLACING AN ORDINARY ROOM THERMOSTAT
SWITCH OFF THE POWER TO
THE CENTRAL HEATING
SYSTEM.
Carefully note which wire colours
are connected to which terminal
numbers of the existing
thermostat.
If the existing thermostat has no
indication of the numbers of each
of its terminals then a qualified
electrician should be called
before proceeding any further.
Remove the existing thermostats
mounting plate from the wall,
and prepare the wall to receive
the Electronic Room Thermostat.
Connect the wires to the new
thermostat referring to the wiring
conversion chart overleaf. Fig.2.
above shows the function of the
RT1 terminals.
NOTE:
Some existing thermostats will have a Neutral wire and/or an Earth
wire connected. These wires must NOT be connected to the new
terminals, but made electrically safe and coiled in the recess at the
back of the new thermostat. If in any doubt about the function of every
wire connected to the existing thermostat, call a qualified electrician for
advice.
