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Instruction Manual
TPST501 (569568) - BOSS
TM
Universal Programmable Room Thermostat (Wired)
(7 day, 5/2 day and 24 hour programme options)
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 back plate.
Do not mix old and new batteries. Do not use rechargeable batteries.
Please leave these instructions with the end user where they should be kept in a safe place for future
reference
Installation
The ideal position to locate the TPST501 Programmable Room Thermostat is 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 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 TPST501 are made to the standard 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 TPST501,
but a parking terminal is provided to connect an Earth wire if one is present.
Backplate Connections
Terminal Name
Function
1:COM
Switch common terminal
2:NO
Normally open (Volt-Free Contact)
3:NC
Normally closed (Volt-Free Contact)
After installing the backplate in a suitable location, wiring connections can be made as shown above.
The following criteria apply to the installation:
• The loading power supply should be 230V AC and fused at 5 amps
• Optimum cable size for installation is 1.5mm
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, 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
