SAUNACORE "MERCURI" Control Operating Instructions
Display windows:
Left Window “Minutes” Time Display
Right Window “Degrees” Temperature Display
Signaling LED’s:
C - Temperature is displayed in deg C
F - Temperature is displayed in deg F
Heat - Flashing means heater is on
Run - Sauna is during operation cycle
Aux - Auxiliary output is active
Pwr - Unit is connected to power source.
Arrows Up and Down below “Minutes” window change period of the sauna cycle.
Time can be adjusted between 1 to 60 minutes. It is time during which temperature
inside sauna room will be maintained within set temperature +- 3 deg C.
If sauna is not during operation time can be adjusted up and down. During operation
time can be only be adjusted down. Meaning operation period will be decreased.
Arrows Up and Down below “Degrees” window change target temperature of the
operation cycle. Target temperature can be can be adjusted between 1 to 90 deg C
( 32 to 190 deg F).
If sauna is not during operation temperature can be adjusted up and down.
During operation temperature can be only be adjusted down. Meaning target
temperature will be decreased.
During sauna operation Degrees windows will show target temperature for
1 second and current room temperature for 3 seconds.
Unit is capable of displaying temperature both on deg C and deg F. In order to switch
between units both down arrows need to be held continuously depressed for 10 seconds,
until LED beside “degrees” windows changes, lighting up unit required units window (F or C).
As default deg C are selected.
Initially for the first 5 seconds, when either Up or Down key is depressed and held, modified
value (time or temperature) changes every second. If button is pressed continuously for longer
then 5 seconds, changes are more rapid, every 0.5 second, and finally after 15 seconds every
0.25 second, allowing fast wide range changes.
Controller is capable of detecting faulty temperature sensor and overheating of the sauna room.
Message ‘ts’ means temperature sensor problem, message ‘too hot’ means overheating of the room.
In both conditions heater operation is disabled and sauna becomes not operational until first - fault
condition is corrected and secondly unit is restarted by power cycling or error is cleared by continuously
holding start button for 15 seconds.
Sauna operation is triggered by “Start” button. Unit will maintain set temperature for set period of time.
Unit remembers last setting, so if no changes are made and start button is depressed and released,
last used values are used.
After set time expires unit remains in stand-by mode for 10 minutes displaying last time used values
of time and temperature. After that goes to sleep mode, where only PWR LED is on and display is
blanked. Unit wakes-up if any of the buttons is touched.
Unit is equipped with Aux output 120VAC 10 A. This output is controlled by AUX button
and is not associated with sauna cycle. Can be used i.e. for lights, radio, fan etc.
Once turned on will remain on as long as is not turned off by user, regardless of the state of the
sauna room.
6
SAUNACORE
Figure 88
Eurpean Connection
( L2 = N - "Neutral")
For supply connections, use suitable
AWG wires suitable for at least
o
90 C (190 F).
Ground wire must be insulated.
Mercuri control must be installed outside of
the sauna room, into a 3 gang masonry
electrical box.
Box Size: 3.5" deep x 3.75" high x 5-19/32" wide
Volume (63 Cu.in.)
o
(Use only copper wire).
Mercuri Digital Control
CAUTION: THE MANUAL RESET LIMIT SHALL BE WIRED IN THE CIRCUIT
Mercuri Digital Controls
(120v/240v 1Phase 30 Amps + Under)
Power Supply
N
Ground
L1 L2
Conduit
or BX
H.L.
Ground
Heater
When the magnetic contactor
is used, it also must be installed
into an appropriate metal
electrical enclosure box outside the sauna.
Box Size: min 6" wide x 6" high x 3" deep
Volume (108 Cu.in.)
Figure 99
Operation:
Set time and temperature.
Temperature display window will
alternate simultaneously from
current
tempurature
Note:
All power supply wires
from control box to stove
must be protected by
metal conduit.
Loose connections or connectors
may cause electrical shortage.
Make sure all connections and
connectors are firmly secure.
room temperature and set
IMPORTANT!
LIGHT
POWER
SUPPLY
N
LIGHT
AUX
H1 L1 L2 H2
Control
(rear view)
Mercuri Digital Controls
(240v/208v) 1 Phase Over 30 Amps or Any 3 Phase)
1 Amp
240 V
Fuse
(INLINE)
L1
Ground
L3
L2
Conduit
or BX
H1 L1 L2 H2
Control
(rear view)
Coil
Conduit
or BX
Ground
Temperature Plug
Temperature
Sensor
H.L.
L1
L3
L2
Heater
Ground
Electronic Control
Temperature Plug
(rear view)
Temperature
in sauna
Sensor
(over stove, ceiling
height)
7 www.saunacore.com
SAUNACORE
Mercuri Digital Control
Mercuri control must be installed outside of the sauna room, into a 3 gang masonry
electrical box. When a magnetic contactor is used, it also must be installed into an
appropriate metal electrical enclosure box outside of the sauna.
Figure 10
For supply connections, use suitable AWG wires suitable for at least 90 C (190 F).
(Use copper wire only). - Ground wire must be insulated.
Breaker
(Main Power Supply)
Panel
Mecuri Digital Control
(240v/208v) 1 or 3 Phase 50 Amps and over)
Terminal Connection
Block
L1 L2L3
L2
L3
L1
L1
L2
L3
Ground
1 Amp
240 V
Fuse
(INLINE)
Ground
Conduit
or BX
(applies to Canadian application)
Conduit
or BX
Ground
Coil
Conduit
or BX
Coil
Ground
L1
L3
L2
HEATER
L1
L3
L2
Heater
Ground
H.L.
o
o
Electronic Control
(rear view)
H1 L1 L2 H2
Control
Temperature Plug
Temperature
Sensor
(over stove, ceiling
height)
in sauna
CAUTION: THE MANUAL RESET LIMIT SHALL BE WIRED IN THE CIRCUIT.
8 www.saunacore.com
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