Warmup WU-3IE-PB Installation Manual

Installation Guide:
for the Warmup 3iE Programmable Thermostat

Introduction:

The 3iE thermostat is designed to aid in the comfort of your home by providing timed regulation of your Warmup underfloor
heating system. The thermostat is designed to receive temperature input signals from the following sensors:
1. Air sensor located inside thermostat
2. Floor sensor installed in floor to be heated (see Warmup heater instructions for details)
3. Optional 2nd sensor (either installed in floor or outside house)
- Installed in floor: This is to be used if the floor surface area is very large and delicate to overheating. The reading
from this secondary floor sensor will be used to monitor the overheat limit.
- Installed outside house: The 2nd floor sensor will engage weather compensation. Weather compensation saves
energy by delaying the start of heating period by 10 minutes if the difference between internal and external
temperature is less than 5°C.
The thermostat is not a safety device and should only be used with Warmup heating products. In order to avoid damaging
your flooring the correct floor type should be selected during the thermostat programming process.

Electrical Specification:

• Supply voltage: 230V +/-15% at 50Hz
• Thermostat is not designed for use with intermittent power supply.
• Maximum Switch Load: 16A resistive
• Insulation Class : II
• Housing : IP20 (IP32 when used with gasket- see fitting instructions)
• Standards: EN60730-1 & EN60730-2-9 standards
WARNING – Important safety note
This product uses mains voltage electricity and work should only be carried out by a qualified electrician. You should always
isolate the power supply before attempting to install or repair the 3iE thermostat. The thermostat should not be put into
operation unless you are certain that the entire heating installation complies with current general safety requirements for
electrical installations. Electrical installation to be in accordance with latest IEE Wiring Regulations and appropriate Statutory
Regulations.

Location of Thermostat:

The thermostat should be installed inside a single gang electrical wall box that is at least 35mm deep. For optimal
performance the thermostat should be located in an area with good ventilation. It should not be beside a drafty window/
door, in direct sunlight or above another heat generating device (e.g. radiator or TV).
In most bathroom installations the thermostat cannot be located within the bathroom itself as the thermostat is IP20 rated
and must be located outside of Zone 2. In such cases the thermostat must be fitted to the outside of an internal wall of the
bathroom using the floor sensor to regulate the temperature.
The thermostat is designed for operation between 0°C and 55°C with relative humidity less than 80%.

Location and installation of floor sensor:

The optimum location of the floor sensor is described in each Warmup heater installation manual. Refer to that manual when
selecting floor sensor location.
The floor sensor provided with the 3iE thermostat enables accurate temperature control of the floor heating system. Floor
sensors are required to regulate electric underfloor heating systems. It is recommended that floor sensors are also fitted with
hydronic underfloor heating systems, providing improved floor temperature control.
The floor sensor must be at least 300mm from the wall and should be placed centre of two heating element runs.
When positioning the floor sensor avoid placing the sensor in areas where it may be exposed to sunlight or draughts. Avoid
areas where there are hot water pipes that may affect the temperature reading.
As the warranty does not cover the floor, it is recommended that the floor sensor is installed into a non-conductive conduit.
This will allow for easy replacement of sensor after the flooring has been laid.
Make sure the conduit has a gradual bend when it enters floor, this will ensure the sensor cable can be easily inserted or with-
drawn. Seal the end with tape to prevent adhesive/screed from entering the conduit.
Route the conduit to the connection box. The end of the conduit should be easily accessible after the flooring has been fixed.
Warning: Do not attempt to cut conduit with sensor installed. This could lead to irreparable damage to your sensor.
3ie Installation guide v5.indd 1
3iE Installation Guide V5 © Warmup plc - 2015
10/5/2015 4:19:30 PM