MONDEX pipe c series User manual

Pipe C- and E-types
INSTALLATION AND OPERATING
INSTRUCTIONS
10/2015

Installation and Operating Instructions Pipe
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Contents
1 General safety information 3
2 Pipe C- and E-types 4
3 The assembly and installation of the heater 5
Stacking of the stones 5
4 Technical information 6
The power and connections of the heater 6
Heater dimensions 6
Amount of heater stones 6
Minimum distances to flammable material 7
5 General instructions for the Pipe heater users 8
Attention 8
Installation cable 8
Additional connection options 8
6 Consider the following when using the heater 8
First heating 8
Sauna room 8
Temperature control 8
Heating time 8
Water thrown on heater 8
Sauna room structure 9
7 Wiring diagram C-type 9
8 The operation of the clock timer and thermostat
of the C-type 10
Further wiring possibilities 10
9 Installation instructions E-type 11
Installation of the external control and sensor 12
10 Wiring diagram E-type 13
Connecting the controller card in the heater 13
Connecting the controller card in the controller 13
11 Control and operation of the heater E-type 14
First-time use / calibration 14
Resetting the heater 14
Error codes 14
Temperature limiter 14
12 Troubleshooting 15
In case the heater does not warm up 15
Warnings 15
Warranty 15
Maintenance, spare parts 15
Natural stone as material 15
Changing the sauna stones 15
13 Service history 16

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This device is not intended for children or persons whose physical, sensory or mental capabilities, or
lack of experience and knowledge prevents them from using the device safely, without the supervision
of a person responsible for their safety or before they have been instructed on how to use the device.
Children should be supervised to ensure that they do not play with the device.
This device complies with the requirements of:
Mondex pursues an active policy of product development and continuous improvement. For this
reason, Mondex reserves the right to make changes relating to the design and technical specification
of their products without prior notice.
1. General safety information
Electrical connections can only be done by an electrician authorized to installation according
to the current regulations.
The MONDEX electric heater is suitable for use in a family sauna, one (1) heater/sauna room.
Keep the installation and operating instructions for further reference.
Always check the adequacy of fire protection distances!
Failure to observe the wiring instructions may result in a fire risk!
Always check the sauna room before turning the heater on!
Always check that the controller has switched off the poser after the set time period!
Due to the risk of fire, do not use the sauna as a drying room for clothes or laundry.
Be careful with the hot heater as the stones and metal parts become very hot and can
cause burns.
Steam from the heater is burning hot and may cause burns.
It is recommended to supervise children, disabled and ill persons who are using the sauna.
Benches and floors may be slippery, therefore move in the sauna with caution.
Do not go to a hot sauna under the influence of narcotic substances (alcohol, drugs,
narcotics, etc.)
If the heater’s stone compartment does not have stones or is improperly filled there is a
risk of fire!
Covering the heater causes a fire risk.
For safe use of sauna, please read these safety instructions first!

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2. Pipe C- and E-types
C-type E-type
+

Installation and Operating Instructions Pipe
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Stacking of the stones
Note! Use regular olivine diabase, peridotite or olivine heater stones of less than 10 cm ø in the PIPE
heater. It is recommended to use protective gloves when stacking the stones. The heater stones should
be stacked so that the resistors are not touching each other. The resistors should never be bended so
that they would touch the metal structures of the heater.
The heater’s area for stones should be entirely filled with stones, including the internal parts of the
resistor column. The stones should be stacked in layers starting from the bottom of the heater.
Continue filling the area step-by-step in this manner until all of the stones have been placed.
When stacking the stones, please do not batter on the heater’s metal surfaces in order to avoid
damage. Dents caused by the user are not covered by the manufacturer’s warranty or other product
liability.
1) The package includes the heater (E-type also an external control
unit) and its user manual. Heater stones are not included.
2) Inspect the heater visually. If you notice any discrepancies, please
contact the store from where you purchased the heater or
info@mondex.fi
3) The sauna’s floor surface should be properly protected before
beginning of the installation.
4) The electrician connects the wires before the heater is installed
to its place. During the heater’s installation observe the safety
distances between the heater and any inflammable material as in
Table 4.4. (see pg 7) as well as the heater’s power rating according
to Table 4.1 (see pg 6).
5) The heater should be installed on the floor and its feet should be
adjusted so that the heater is upright.
3. The assembly and installation of the heater

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4. Technical information
Heater Pipe 6,6 Pipe 9,0 Pipe 10,5
Power kW 6,6 9,0 10,5
Voltage 400 V 3N 400 V 3N 400 V 3N
Connecting cable 5 x 1,5 mm² 5 x 2,5 mm² 5 x 2,5 mm²
Fuse 3 x 10 A 3 x 16 A 3 x 16 A
Size of the sauna 6 - 9 m38 - 15 m312 - 22 m3
Table 4.1
Amount of stones
Model Stone amount (kg)
Pipe 6,6 80
Pipe 9,0 80
Pipe 10,5 140
Table 4.3
Heater dimensions (mm)
Model Diameter Height
Pipe 6,6 320 850
Pipe 9,0 320 850
Pipe 10,5 370 1100
Table 4.2
The power and connections of the heater

Installation and Operating Instructions Pipe
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Minimum distances to inflammable material (mm)
D
Table 4.4 Minimum distances to inflammable material (mm)
Model A B C D Size of the sauna
Pipe 6,6 100 100 770 1900 6-9 m³
Pipe 9,0 120 120 770 1900 8-15 m³
Pipe 10,5 180 180 900 2000 12-22 m³
AA B B
C

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5. General instructions for the Pipe heater users
6. Consider the following when using the heater
First heating
During the first heating the resistors can emit fumes. Therefore ensure that the room is properly venti-
lated. NOTE! See also the first time use of type E on p. 14!
Sauna room
Always check the sauna room before turning the heater on! Always make sure that the timer has
switched off the power after the set time period!
Temperature control
The desired temperature can be set either by a mechanical thermostat (see page 10 types C) or
through the control panel (see page 14 E types). The actual heating time is dependent on the sauna’s
dimensions, structure and thermal insulation. The temperature in the sauna room can be maintained
at the desired level with a thermostat. Should the temperature of the sauna room, for any reason,
become dangerously high, the automatic temperature overheat protector will turn off power from the
heater. Always find out the cause of overheating. The power can be turned on again by pressing the
overheat protector reset button (see page 10 types C and page 14 types E).
Heating time
Heating the sauna too long consumes energy and does not improve the steaming properties. The best
steam is achieved by keeping the sauna’s heating time relatively short, about 30-60 min. according to
the size of the sauna and the heater’s power. The size of the sauna, glass doors, windows, or materials
used may increase the heating time.
Water thrown on heater
We recommend using hand-warm water. The water used for throwing on the heater should be house-
hold fresh water. Smoother steam can be achieved by throwing the water to the heater sides / lower
stones. If you want tougher and more aggressive steams, pour plenty of hot water all at once on the
heater.
Attention!
The electrical connections may only be done by an electrician authorized to installation according to
the current regulations. The Pipe electric heater is suitable for use in a family sauna, one (1) heater
per sauna room. Keep the installation and operation instructions for future reference.
Installation cable
Use rubber cable H07RN-F as a connecting cable.
Additional connection options
Control of electric heating with the heater: The electric heating control cable is brought directly to
the heater’s junction box and then further to the heater’s terminal block with a rubber cable that is
dimensionally identical to (as strong as) the incoming cable.
NOTE! Failure to observe the wiring instructions may result in a fire risk!
NOTE! Remove all plastic foils before beginning to use the heater!

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Heat control
Sign light “heater on”
7. Wiring diagram C-type (fixed control)
Sauna room structure
The sauna, and especially its roof, should have good thermal insulation, as the steam tends to escape
through the roof. Due to moisture we recommend using aluminium foil. The heater is dimensioned
according to the sauna space.
In addition to the conventional sauna structure (wool insulation, foil, timber), the power consumption
is also affected by the following; if the sauna has walls made of uninsulated stone, tile or concrete
surfaces or timber, the heater power should be slightly increased.
The heater power need (kW) increases for every uninsulated square meter the same amount as if
increasing space by 1.2 m3 and on timber surfaces by 1.5 m3. Also the glass surfaces (glass walls,
doors and uninsulated stone surfaces) are calculated as 1.2 m3 per square meter. Choose a higher-
powered heater in borderline cases.
The sauna needs to have an efficient ventilation in order to achieve a good oxygen level and get fresh
air. The air change rate needs to be at least 6 times per hour. For a sauna with an electric heater, the
most convenient ventilation is mechanical. We recommend to place the valved fresh air tube above the
heater (min 50 cm) either on the wall or in the roof. The exhaust valve should be placed as far away
from the heater and as close to the floor level as possible. An option is to lead the exhaust air below
the sauna door into the wash room. In that case there has to be a minimum 50 mm opening between
the door and the floor. It is highly recommendable to install an exhaust air valve in the roof, through
which moisture exits after the sauna session.
For more information, see the construction guidelines and building regulations.

Installation and Operating Instructions Pipe
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The time switch (4+8 h) operates as the heater’s main switch. After the desired time the time switch
automatically turns the power off from the heater. If you wish the heater to warm up after a set time,
you can set the timer to start the warm-up after 1-8 hours. The maximum warm-up time is 4 hours.
Example:
If you wish to go to the sauna as soon as possible, set the time switch between 1 and 4. The heater
switches on immediately and begins to warm up. The desired temperature can be set by turning the
thermostat.
If you wish to go to the sauna in three hours, set the timer to 2 on the time switch 1-8. The timer starts
and the power will be turned on and the heater will start to warm up after two hours.
When power has been turned on, the heater will remain on for up to 4 hours. After this power will be
turned off automatically. If desired, power can be switched off earlier by turning the time switch to zero (0).
Always make sure that the time switch has turned power off after the set time period!
8. The operation of the clock timer and thermostat of the C-type
Time switch
Overheat protectors
reset switch
Thermostat
Additional connection options
Wiring a signal light outside the sauna room:
The H07RN-F cable should be used as connection cable and its cross-sectional area should be the
same as that of the connecting cable
Control of electric heating with the heater:
The electric heating control cable should be brought directly to the heater’s junction box and then
further to the heater’s terminal block with a rubber cable as strong as the connecting cable.

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9. Installation instructions E-type
Supply cable 5 x 1.5 mm2 / 5 x 2.5 mm2
Sensor
RK
Controller
S
PH
KHH
ca. 250 mm
ca. 250 mm
max. 990 mm
Controller

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Installation of the external control and sensor
Drill a 3,5 mm hole to the panel and then bring it to the wiring
panel. The sensor should remain visible for ca 10 mm. When
needed, the sensor can be fixed into the hole, for instance with a
small drop of silicone adhesive. The sensor cable measures 6 m.
Cut the excess wire and connect the other end to the heater.
The wall mounting plate is either mounted with three screws to
the wall or fixed to the bottom of the mounting box. The mount-
ing plate is covered with a cover plate and finally with the control
panel. The mounting cable is 8 m. Cut the extra cable and
connect the other end to the heater. When installing the control
panel, make sure that the cables are not detached or deformed.
Note! Remove the plastic protection foil of the control panel before
using the heater.
E-type heater includes:
External control Sensor

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10. Wiring diagram E-type
Prepared quick
connector
Connecting the controller card in the
heater
Connecting the controller card in
the controller
To the controller
To the overheating protection
To the thermal sensor
White
Grey
Green
Blue
Red
White
White
Black
Black
OVERHEATING PROTECTION

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11. Control and operation of the heater E-type
Operating time adjustment
Power switch
Operating time
Temperature
Temperature
control
Quick start
Normal start: Select the operating
time with control buttons.
Operating time is displayed in light studs.
One light equals 30 min.
Maximum operating time is 4h.
Quick start: Push the quick start button.
The heater will remain on for two hours.
Temperature control: Set the desired
temperature with control buttons.
One light stud affects the tempera-
ture by ca. 5°C.
Heater start-up: When the operating time
and temperature have been set, turn on the
heater from the power switch. NOTE! In case
the power switch has not been pressed, the
controller lights will be blinking. NOTE! The heater
memorizes the previous temperature setting.
Scheduling the heater: The heater can be scheduled
to start after 30 min – 8 h. After this the heater will
stay on for 4 h.
• Keep the operating time controller pressed until
the red lights turn off.
• After this the light studs will turn blue and each
light represents 30 min of time.
• Select the desired temperature for the sauna with
the temperature control buttons.
• You can turn off the heater at any time
by pressing the power switch.
First time use of the heater/calibration
Set the temperature from the temperature control
2 leds from below. Push the quick-start button (2h).
Put the heater on from the left upper corner power
switch. When 2 hours have passed or the blue led at
the down right hand corner has turned off, the heater
The heater is operated by adjusting its operating time and temperature, and then by switching the heater on
from the power switch.
Temperature limiter
The temperature limiter reset button is located above
the heater’s main power switch under a protective
cap. Open the cap by turning it. The red reset button
located under the cap is 3,5 mm thick.
is calibrated. Do not open the sauna door during the
calibration. During the calibration the heater adjusts
to heat itself optimally according to the volume of the
sauna. After the calibration the heater can be used
normally.
Resetting the heater
Turn off the main switch of the heater (located on
the right hand lower side of the heater). Press the
temperature + and - buttons of the control unit at
the same time. Put the main switch of the heater on
again by pressing the + and – buttons at the same
time. Now the heater is ready for a new calibration.
Look at the instructions about calibration at the
“First-time use of the heater.
Error codes
In case of an error in the heater, the electronics turn
off the heating elements and notifies the controller of
the failure with blue lights as follows:
4. lower light:
Relay fault
3. lower light:
Short circuit of the
thermal sensor
2. lower light:
Contact failure of
the thermal sensor
1. lower light:
Calibration status

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12. Troubleshooting
In case the heater does not warm up
- Is the power on?
- Has the temperature limiter tripped ? > This is reset by pressing the temperature limiter reset
switch with a thin-headed object until a click is heard. Always find out the reason for the
temperature limiter tripping before the unit is switched on again.
- Has the time switch been turned to the point where the heater should warm up?
- Are the heater’s main fuses in the electrical unit intact?
- Has the thermostat been set to higher values than the sauna temperature?
- Has the time switch stopped or got stuck (for instance in the front panel)?
> The suitable gap is 1-2 mm.
- Check that all the resistors are glowing when the heater is on.
- Check the error codes in Models E.
If necessary, contact the dealer or manufacturer.
Warnings
- Due to the fire risk do not use the sauna as a drying room for clothes or laundry.
- Be careful with the hot heater as the stones and metal parts become very hot and can cause burns.
- Steam from the heater is burning hot and may cause severe burns.
- It is recommended to supervise children, disabled and ill persons who are using the sauna.
- Benches and floors may be slippery, therefore move in the sauna with caution.
- Do not go to a hot sauna under the influence of narcotic substances (alcohol, drugs, narcotics, etc.).
Warranty
For heaters and control units in private use, the manufacturer Mondex Oy, grants a warranty of two (2)
years from date of purchase. The warranty is limited to (1) year if these products are in commercial use.
Keep the sales receipt or warranty card. The warranty does not cover external or internal mechanical
damage caused by, for example, impacts with a stone or the heater falling over. Nor does the warranty
cover defects caused by nature, like lighting or damages caused by overvoltage.
Maintenance, spare parts
If insolvable faults appear in the heater, please contact the manufacturer or an authorized service
centre. Spare parts are available from the MONDEX distributors, service centre and manufacturer.
When purchasing spare parts, please refer to the name and power of the heater, so that the right parts
can be supplied.
Natural stone as material
Small pebbles or pieces may come off the natural stone used in the heater. As this is not a failure of
the organic material but its natural feature that cannot be predicted at the time of manufacturing the
product, the manufacturer is not responsible for any damage resulting from this.
Changing the sauna stones
It is important to keep an eye on the stove and the condition of the stones at regular intervals. The
top layer of the stones may seem in good condition, but further down the stones are exposed to much
higher stress and temperatures. Crumbled stones block the flow of air through the heater which
shortens the lifetime of the heating elements. Annually change the position of the stones and replace
any broken pieces (in commercial use every 6 month). Warranty does not cover heating elements that
brake before their normal lifetime due to above caused blocked air flow.

The heater’s service history
We recommend replacing the heater stones every 1-2 years.
Mondex Oy
Rantakatu 14 A
67100 Kokkola
Finland
tel. [phone]
fax. [phone]
info@mondex.fi
www.mondex.fi
Date Action
The heater’s manufacturer: