BOSSCO TPST201 User manual

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Instruction Manual
TPST201 (569566) - BOSSTM Room Thermostat
Thank you for purchasing this product. If installing for someone else, please ensure
that the instructions are handed to the householder.
Please read this manual prior to installation or use.
Always isolate the AC MAINS supply before removing the unit from the backplate.
Please leave these instructions with the end user where they should be kept in a safe
place for future reference.

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Installation
The ideal position to locate the TPST201 room thermostat is about 1.5m above
floor level. It should be mounted in a location where the thermostat is accessible,
reasonably lit and free from extremes of temperature and draughts. Do not mount
the thermostat on an outside wall, above a radiator or in a location where it may be
subjected to direct sunlight.
The electrical connections to the TPST201 are made to the backplate supplied.
This simplifies installation, as no connections are made to the controller itself.
Connection details are shown below – no Earth connection is required for the
correct and safe operation of the TPST201, but a parking terminal is provided to
connect an Earth wire if one if present
Jumpers
Jumpers Position Function Default
Valve Protection VP ON: Enable OFF: Disable ON
Channel
load selector 1-5
Select total current loading of Thermostat
provided:
Position 1: <1A
Position 2: 1A to 2A
Position 3: 2A to 3A
Position 4: 3A to 4A
Position 5: > 4A
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Backplate Connections
Terminal Name Function
N Mains supply Neutral
L Mains supply Live (230Vac)
1: COM Switch common terminal (remove jumper link for volt-free connection)
External jumper linked Live (230Vac heating applications only)
2: NO Normally open
3: NC Normally close
E Earth
N
N
NO NC
L
L 1 2 3

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After installing the backplate in a suitable location, wiring connections can be made
as shown above. The following criteria apply to the installation:
• The incoming AC mains supply should be 230Vac and fused at 5amps
• Optimum cable size for installation is 1.5mm2; wiring colours should be in
accordance with the current requirements of the IEE Wiring Regulations
• Cable entry should be from the rear of the backplate
• All wiring connections should be securely made, and be firmly gripped between
the square brass washers on each terminal
Do not restore the mains supply to the system until all associated items are fully
installed.
NOTE: All electrical installation work should be carried out by a suitably qualified Electrician
or other competent person. If you are not sure how to install this thermostat consult
either with a qualified electrician, heating engineer or your boiler/heating system
supplier for advice on how to continue.
Do not remove or refit the TPST201 onto the backplate without the mains supply to
the system being isolated.
User Instructions
The TPST201 is adjusted very easily by turning the rotary dial on the front of the
thermostat to the required temperature setting. To adjust the set temperature, turn
the rotary dial to the left to decrease, or right to increase the set temperature.
The indicator on the front panel will light when the temperature is below the set
value, showing that the thermostat is calling for heat from the boiler. Once the room
reaches the set temperature, it will turn off and the TPST201 will stop calling for
heat from the boiler.
Heat cut off at high temperature
When room temperature is over limit at 36°C, all heating outputs will be turned off
regardless of the control pattern and delay timers.
Valve protection
This function can be enabled/disabled by jumper, set jumper to OFF to disable this
function or ON to enable this function.
This turns on the relay (valve) for 5 minutes in every 7 days to prevent the valve
getting stuck through not moving for a long time.

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Product Specification
Model TPST201
Type Surface mounted electronic room thermostat designed
for 230V AC heating applications
Temperature Scale (°C or °F) °C
Temperature Setting Range 5°C - 30.0°C, at minimum level (5°C) as factory default.
Power Control:
Rating
Relay output
On/Off Indication
230V/50Hz, 0.2A
6(2.5)A
Red LED
Operating Temperature 0°C - 50°C
Storage Temperature -20°C - 60°C
LED Red for heating
BOSS™ is a registered trademark of the Travis Perkins Group
Registered Office: Travis Perkins plc, Lodge Way House, Lodge Way, Harlestone Road,
Northampton. NN5 7UG