3
Fig. 15
Fig. 13
110 mm
minimum from
nearest
obstruction
60 mm
fixing
centres
Fig. 14
t
s
INSTALLATION INSTRUCTIONS
NEW INSTALLATION
Choose a fixing position where the TP5E will sense the
room temperature without being affected by draughts or
heat sources such as radiators, open fires of direct
sunlight, see fig. 13. Fix at a 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 cabling is used. Fig. 14 shows the
fixing hole dimensions and the clearance required for
removal of the sliding battery cover. Standard M3·5
screws are used to fix the TP5E to a flush box, or No.6
woodscrews and wallplugs of adequate length should be
used for surface fixing.
REPLACING AN ORDINARY ROOM THERMOSTAT
Switch OFF the power supply to the heating system.
Carefully note which wire colours are connected to which
terminal numbers of the existing thermostat, and note the
function of each terminal. If the existing thermostat has
no indication of the function of each of its terminals, then
a qualified electrician should be called before proceeding
further.
Remove the existing thermostats mounting plate from
the wall, if applicable, and prepare the wall to receive the
TP5E. Refer to fig. 14 for dimensions. Connect the wires
to the TP5E as shown in fig. 15.
If the existing wires are too short to connect to the TP5E
then a pattress (PT05) should be fixed to the wall and
used to terminate the existing wiring. New wires can then
be extended from the pattress to the TP5E, which can
then be fixed to the pattress with the screws provided.
NOTE
. Some existing thermostats will have a Neutral
wire and/or an Earth wire connected. These are not
required by the TP5E and must not be connected to any
TP5E terminals, but should be made electrically safe and
coiled in the recess at the back of the TP5E. If in doubt
about the function of any existing wire, call a qualified
electrician for advice.
Selecting the control mode
The TP5E can operate either in on/off control mode or
in chrono-proportional control mode. This is selected
by means of a small link on the rear of the product
(see fig.15 for location)
The unit is factory set to on/off control with the link in
place. When in on/off mode the thermostat cycles the
heating on and off within its switching differential. If
chrono-proportional control is selected the thermostat
learns and attempts to reduce the switching differential
thus improving comfort.
