Timeguard TPT88 - Manual (Page 4)

3
Switch OFF the mains to the controller. Remove the front of the
thermostat by using a small screwdriver in the slot as shown in Figure 3.
Cut the cable tails of the temperature probe and heating mat or cables
to length and strip sleeving and insulation as required. Identify the
wires and locate according to fi gure 2. Supply cable with a minimum of
2.5mm
2 must be used. Tighten the screw terminals onto the wires and
form the cables.
Offer the back plate up to the wall box forming the cables as required,
fi nally locating and tightening up the fi xing screws supplied as shown
in Figure 4.
Snap the front of the thermostat back into position on the back plate.
To test the unit is operating set the temperature to 30ºC as described
in the section “Timed override for Two Hours“. After a few seconds the
Heating ON indicator will show.
Wait for a one hour for a wood underfl oor or up to 5 hours for an
uninsulated concrete fl oor (the warm-up time for uninsulated concrete
will be substantially reduced when the moisture has been driven out
of the concrete during the fi rst few heating cycles) and feel if the fl oor
starts to warm. If it does not, check the connections and carry out the
checks on the mat or cable installation instructions.
Earthing
The TPT88 itself does not require to be earthed. The screen around the
fl ying lead (cold cable) from the Thermolay mat must be earthed to the
box terminal. This also applies to the screen at each end of the Thermolay
cablee, both of which must be earthed in the same way.
Fig. 3 Fig. 4
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