Watts Industries WATTSTEMP 8 series User manual

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4
5
6
PPLIMP09548Aa rev:03/09/2010
1
Min 20cm
WATTSTEMP 8xx thermostat installation guide
60mm
2
2
27mm
89 mm
115 mm
3
3
1
2
GB
1
Max 2,5mm²
x 4 or 5
NTC 10k
(25°C)
30mm

You can drive directly up to 2760W (12A) with your thermostat Wattstemp series 8xx (fig1),
above this power you must install an external power relay (contactor) to optimize and keep a
good regulation (fig2).
You could connect and drive directly a power up to 3600W only if you use the external sensor
for the regulation. (See the user guide parameter menu “parameter N°01 must be set on “Amb
or FLR” position. You could connect and drive directly a power up to 3600W only if you use
Mounting instruction:
All electrical conduits to the thermostat box that contain heating cable and floor sensor
must be sealed to protect the thermostat against hot air currents.
In case of the installation use a floor sensor: the sensor must be mounted alone in a
separate conduit.
If your installation doesn’t use the pilot wire, don’t connect this wire on the thermostat
to avoid electrical perturbation.
Fig2
Several cable loops for a
superior power at 2760W
L
L N
Junction
box
Power
Relay
(Red)
(Blue)
Fig1
One or more cable loops for
a total power up to 2760W
Clock
programmer
N
L
(Blue)
(Red)
L
Optional:
Floor sensor
Pilot wire : only
available with the
“850” thermostat