TP-89 digital bus thermostat
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MKL51701
The TP-89 digital bus thermostat
The TP-89 is an indoor thermostat which can be used to set and
measure the temperature in a room. The thermostat is designed to
work exclusively in combination with
AC-8007 / AC-8014 / AC-814
receivers. Temperature adjustment can be performed simply by turning
the setting knob. This knob can be locked to avoid accidental setting.
The thermostat does not use any programmed scheduling. The
following features are also available:
•
Anti-freeze protection
– any drop in temperature under the
(configurable)
AL Lo
value is detected and signalled to the
receiver, causing the receiver’s FRE output terminal to be activated.
•
Floor temperature detection
– the thermostat is equipped with an
input terminal for the connection of a temperature sensor such as
the TS-80. This is especially suitable for under-floor heating control
– by placing the sensor directly into the floor heating regulation can
be performed with higher precision. As a result, using the TP-89
and the TS-80 in combination allows for a comfortable floor
temperature with no additional risk of damaging the floor.
Tab
Button
Installation and enrollment
The TP-89 should be mounted in a dry indoor location. Choose a
mounting location about 1.5 meters above the floor in an area with
good air circulation. Avoid places with draughts, dead air spots and
radiant heat from the sun or appliances.
1. Release the upper cover by pressing the plastic tab on the bottom
side of the housing
2. Mount the back part on to the desired location.
3. Connect the receiver’s digital bus jumper to the BUS terminals.
The polarity is irrelevant.
4. Should a floor sensor be used, wire it to the SEN terminals.
5. Close the thermostat.
6. Enroll the thermostat to the receiver by pressing and holding the
knob for 5 seconds. The receiver must be in enrollment mode (see
the AC-8007/8014/814 manual).
Configuring the fixed parameters
The thermostat works with the following temperature thresholds:
t Lo
(economic),
t Hi
(comfort),
AL Lo
(fault/freeze),
FL Lo
(floor low
temperature) and
FL Hi
(floor high temperature). Each of the
parameters is configurable within a corresponding temperature range –
see the table below.
You can enter the adjustment menu by keeping the knob pressed for
10 seconds. Scrolling the menu is done by turning the knob. The
display will show temperature parameter names – see the table below.
The currently displayed parameter can be adjusted by pressing the
knob briefly, turning the knob until the desired temperature is
displayed, and confirming the setting by re-pressing the knob (this will
also cause a return to the menu so that you can configure other
parameters immediately). The adjustment menu is escaped from by
pressing the knob while
OK
is displayed or automatically after 30
seconds. The parameter ranges are restricted according to the table.
Parameter
Adjustment range
Factory
Description
SPAN
0.1°C;0.2°C;0.5°C 0.2°C
Hysteresis
for
switching
t Lo
+6°C to +40°C*
6°C
Economic
temperature
t Hi
+6°C to +40°C*
40°C
Comfortable
temperature
AL Lo
-9°C to +20°C
3°C
FRE
(freeze)
output to ON
AL Hi
+30° to +70°C
60°C
Not applicable
FL
ON/OFF OFF
Floor sensor
ON/OFF
FL Lo
+6°C to +40°C*
22°C
Lower floor-
temperature
threshold
FL Hi
+6°C to 40°C*
27°C
Upper floor-
temperature
threshold
FL t
Current temperature of the floor (displayed after
pressing the knob)
Corr
±
1°C
0 Correction
*
t Lo
to
t Hi
and
FL Lo
to
FL Hi
must be valid ranges:
t Lo
must not
be greater than
t Hi
and
FL Lo
must not be greater than
FL Hi
.
Adjustment ranges as depicted on a coordinate axis:
Temperature regulation range
AL Lo
t Lo
FL Lo
t Hi
FL Hi
20
9
Temperature accuracy adjustment:
The thermostat allows you to
configure the hysteresis – the accuracy to which the temperature is
regulated. The setting is done via the
SPAN
item in the adjustment
menu (proceed the same way as with the threshold parameters
mentioned above). Turning the knob lets you select one of the
following accuracy ranges: ±0.1˚C, ±0.2˚C or ±0.5˚C (the factory
default setting is ±0.2˚C).
Example:
If the accuracy is adjusted to ±0.5˚C and the temperature is
set to 24˚C, the thermostat switches the heating on when the
temperature drops below 23.5˚C and it switches it off if the
temperature goes above 24.5˚C. In reality the temperature scatter can
be slightly higher because of the temperature persistence of the room.
Warning: too high an accuracy can cause the heating to turn on
and off too frequently.
Temperature measurement correction:
Possible temperature
measurement offsets can be corrected via the
Corr
item in the
adjustment menu. The range of adjustable corrections is
±
1°C.
Manual operation
•
When not being handled, the thermostat shows the current
temperature in the room.
•
By turning the knob the desired temperature can be set
from
t Lo
to
t Hi
(during setting, a hand symbol is shown on the display). If
the temperature cannot be set, see “Locking the thermostat”.
Setting the
t Lo
and
t Hi
limits allows the installer to prevent the
regulated temperature from being set to undesirably high or low
values by manual operation.
Example:
If t Lo = +15°C and t Hi = +22°C then the regulation
temperature can only be set within the range of +15 to +22°C
(unless the adjustment menu is entered).
•
If you stop turning the knob the current temperature in the room will
be displayed again (3 seconds after the last movement of the
knob).
•
If the
current temperature is lower than the desired
temperature minus the hysteresis
, the thermostat will switch the
heating on (a symbol of wavy lines will appear on the display).
•
If the
current temperature is higher than the desired
temperature plus the hysteresis
, the thermostat will switch the
heating off (the symbol of wavy lines will disappear).
Floor heat detection
If enabled by setting
FL On
, floor temperature detection is performed
using a sensor located in the floor. The
FL Lo
and
FL Hi
parameters
allow you to set temperature thresholds for under-floor heating
regulation:
•
If the current
floor temperature is lower than
FL Lo
, the
thermostat will switch the heating on. This way a comfortable floor-
temperature is maintained even if no switch-on request is
generated due to the room temperature.
•
If the current
floor temperature is higher than
FL Hi
, the
thermostat will switch the heating off. This prevents the floor from
being damaged by too high a temperature.