sentiotec SGH Steam Generator Installation Guide

SGH Steam Generator
Installation Guide

INTRODUCTION

These instructions for installation and use are intended for owners of steam rooms and steam generators, persons in charge of managing steam rooms and steam generators, and for electricians responsible for
installing steam generators. Once the steam generator is installed, these instructions for installation anduse are handed over to the owner of the steam rooms and the steam generator, or to the person in charge maintaining them. Congratulations on making an excellent choice!
SGH
Steam generator’s purpose of use: The SGH steam generator is meant for warming the steam room to a bathing temperature. It is not to be used for any other purpose.
The guarantee period for steam generators and control equipment used by families is two (2) years. The guarantee period for steam generators and control equipment used in community steam rooms is one (1) year.
The guarantee period for steam generators and control equipment used by institutions is three (3) months.
The guarantee does not apply if the requirements for water quality presented in table 1 are not met, if the device is not serviced as defined in chapter 1.9., and/ or if the device is not installed as defined in chapter 2.

 INSTRUCTIONS FOR USE

1.1. Steam Generator System Components

1. Control panel

2.  Temperature sensor

3.  Steam pipe

4.  Steam nozzle

5.  Water supply pipe

6.  Water supply pipe valve

7.  Discharge water pipe

8. a. Manual discharge valve
   8b. Automatic discharge valve (optional)

9.  Floor drain

10. Overpressure valve

11. Connection cable

12. Fragrance pump (optional)

13. Sediment cup

Fig. 1
Steam generator system components
1.2. Warnings

• The steam generator faucets, pipes and steam nozzles became scalding hot when in use. Do not touch them with bare hands.
•  The steam from the steam nozzles is scalding hot. Do not burn your skin.
• If there is a blockage in the steam nozzles and/ or pipes, the steam generator will let the steam out from the overpressure valve. Do not block the overpressure valve.
• Do not take electric devices in to the steam room.
• Make sure the steam room dries properly after use.

1.3. Using the Steam Generator
Before starting the device, make sure that there are no objects in the steam room that do not belong there.
Make sure that the steam vents freely from the nozzle. Open the water supply pipe valve. The steam generator is equipped with a separate control panel. The device is in standby mode, when the buttons lit on the panel.
  If the buttons don’t lit, check that power is switched on from the main switch.
Control panel 1.3.1. Operation / Standby mode
Steam generator, light and fan are switchable on and off independently – see operation page 6 and 7.

| Steam on/off
---|---
| Fragrance pump on/off (optional)
| Light on/off
| Fan on/off

Standby mode
The operating battens of steam, light and fan light up on the control panel.
Light and fan can be switched on and off separately.
The button fragrance pump is only active, when the steamer is on.

SETTINGS / EINSTELLUNGEN

Standby mode
The operating buttons of steam, light and fan light up on the control panel.

| Open the setting menu by simultaneously pressing the locations of the buttons –, MENU and + (see Fig. 2). Press for 5 seconds.
Attention: The buttons do not glow.
---|---
| Maximum on-time
The maximum on-time can be changed with the -/+ buttons. Possible settings: 10min – 1 h (10 min steps) 1 h – 18 h (1h steps) 24 h
| Press the MENU button to access the next setting. Choose possible settings with -/+ buttons.
| Memory for power failures OFF: the system will shut down – On/Off button must be pressed to restart. ON-1: the system will start again with new ontime. ON-2: the system continue with ontime what was left before blackout.
| Press the MENU button to access the next setting.
Choose possible settings with -/+ buttons.
| Manual or automatic valve OFF: manual valve
ON: automatic valve (optional)
| Press the MENU button to access the next setting.
Choose possible settings with -/+ buttons.
| Rinsing interval only available, if SET3 is ON
The flush perid length can be changed with the -/+ buttons. Possible settings: OFF, 1 h, 2 h, 3 h and 4 h
| Press the MENU button to access the next setting.
Choose possible settings with -/+ buttons.
| Use counter TOTAL
Total usage hours are shown in the display
| Press the MENU button to access the next setting.
Choose possible settings with -/+ buttons.
| Service cycle
The display shows how many hours ago the service has been done. Reset counter after service by pressing MINUS button for 10seconds, until counter is “0”.
---|---
| Press the MENU button to access the next setting.
| Manual water control for service You can add and discharge water, when cleaning water reservoir, troubleshooting or in service.
Water INTAKE: hold PLUS button FLUSH operation: hold MINUS button
| Press the MENU button to access the next setting.
| Version display Software versions are shown alternately in the display:
PU: version of steam generator
CU: version of control panel
| Press the MENU button to access the next setting.
| Selecting remote start operation PULS:
Short press = steam generator on
Long press = steam generator off
I-O: Steamer on or ofF
| Press the MENU button to exit.

OPERATION

| Standby mode
The operating buttons of steam, light and fan light up on the control panel.
---|---
| FAN on / off
| Change setting with – / + buttons. Press the MENU button to accept
| Chadlock ON / OFF Hold together
Steam on/off and Light on/off for 5 seconds
| Chadlock is ON
| Standby mode The operating buttons of steam, light and fan light up on the control panel.
---|---
| Press the button Steam generator on / off
| The display shows the steam room temperature setting.
Change the setting to the desired temperature with the – / + buttons.
Temperature indicator light blinks.
| Press the MENU button to access the next setting.
| Remaining on-time Press the – / + buttons to adjust the remaining on-time. Time indicator light blinks.
| Press the MENU button to exit.
| Operation Mode: Example: the steamer will be on for 3 hours and 40 minutes with max. 38°C.
Temperature and time indicator lights are lit continuously
| Ventilation / dehumidifying Press the button Fan
| Change the setting with the – / + buttons. OFF: fan is off
ON: ventilation is on as long as steamer is on.
DRY: Dehumidifying activates after steamer end its program or steamer is shut down manually.
The fan is running 60 min. and can not stop by pressing any button!
Press the MENU button to exit.
| Intensity aroma Press the button Fragrance pump (optional)
| Press the – / + buttons to adjust the intensity.
Press the MENU button to exit.
| Pre-setting time (timed switch-on) Press the button MENU, until the time symbol lights up.
---|---
| • Press the + button until you overstep the maximum on-time. Pre-setting time symbol blinks on the top row.
• Select the desired pre-setting time using the – / + buttons. The time changes in 10 minute steps.
Example: the steamer will start in 2 hours and 10 minutes.
| Press the MENU button to exit.
| The decrease of remaining pre-setting time is shown until zero appears, after which the activated devices (steamer, aroma, fan) are
switched on with maximum on-time (see setting set 1) The bottom row shows the remaining presetting time.

1.4. Steam generator off
The steam generator will turn off when the button steam on/off is pressed, the on-time runs out or an error occurs. Turning off the steam generator will also stop the aroma pump.

• If the device has an automatic discharge valve, the device does the rinsing and discharges the water reservoir when the device is turned off (takes about 5 minutes). During this time don’t turn the power off from the main switch.
• If the device does NOT have an automatic discharge valve (optional), empty the water reservoir manually always after using the device. Open the discharge valve, let the reservoir drain and close the valve. This avoids lime and other impurities to accumulate in the device.

1.5. Fragrance pump (optional)
When turned on, the fragrance pump will feed fragrance to the steam pipe. The fragrance pump is controlled via the control panel.

• Attach the pump’s suction hose to the fragrance container before switching on the steam generator.
• During first use, the fragrance is not fed into the steam room right from the start, as the fragrance must run through the pipeline first. Tip: you can speed up the process by setting the fragrance intensity to maximum at first.
• Make sure that the fragrance container does not dry up during use. The pump must not be left on without fragrance.
• Use only fragrances meant for steam generator use. Follow the instructions on the packaging.

1.6. Automatic discharge valve (optional)
The automatic discharge valve helps to avoid problems caused by water impurity. Function of the automatic discharge valve:

1. Rinsing the water discharge piping The device rinses impurities which have accumulated in the water discharge piping. The  rinsing is done in every 5th time when the device takes water.
2.  Rinsing the water reservoir (SET4) The device discharges the water reservoir and  fills it up with clean water according the rinsing interval which has been chosen. During rinsing the text “flushing” runs in the display. This function is meant for institutions etc. where the steam generator is on a several hours at a time. The  rinsing takes over 5 minutes and during this time the device pauses the steam generation. In Multidrive system one device is rinsing at a time so the steam generation doesn’t break totally.
3. Discharging the water reservoir after use The device rinses and discharges the water reservoir automatically when the steam generator is turned off. The discharging takes about 5minutes.

1.7. Remote control
The steam generator is possible to turn on also with a separate remote control, which has been assembled e.g. in the hotel reception. SET9 1.8. Steam Generator Maintenance
The following maintenance operations are allowed for non-professional users:

• emptying the sediment cup (section 1.8.1.)
• cleaning the water level sensor (section 1.8.2.)
• decalcification (section 1.8.3.)

The time indicator light starts blinking when 200 hours has passed from the previous service.
All other maintenance must be left to professional maintenance personnel.
Steam generators in community, institution and such use must be serviced thoroughly at least twice a year (checking and cleaning the reservoir, heating elements and the water level sensor).
1.8.1. Sediment Cup Emptying
Watch out for the hot steam generator. Do not unfasten the sediment cup when the device is in use. Make sure that the steam generator is cooled down completely before you unfasten the sediment cup.
There is a sediment cup in the bottom of the device which collects water impurities. Empty the cup when it fills up.

1. Make sure that the water reservoir is empty.
2.  Turn the steam generator off from the main switch (figure 2).
3. Place a bucket under the sediment cup. Some water might come from piping when the cup is off.
4.  Release the sediment cup tightener.
5. Unfasten the cup by pulling. Clean the cup.
6.  Set the cup back to its place and fasten the tightener.

You can accelerate the steam generator’s cooling by running cold water through the steam generator. This can be done using the SET7 function.
1.8.1. Sediment Cup Emptying
Watch out for the hot steam generator. Do not unfasten the sediment cup when the device is in use. Make sure that the steam generator is cooled down completely before you unfasten the sediment cup.
There is a sediment cup in the bottom of the device which collects water impurities. Empty the cup when it fills up.

1. Make sure that the water reservoir is empty.
2.  Turn the steam generator off from the main switch (figure 2).
3.  Place a bucket under the sediment cup. Some water might come from piping when the cup is off.
4. Release the sediment cup tightener.
5.  Unfasten the cup by pulling. Clean the cup.
6.  Set the cup back to its place and fasten the tightener.

You can accelerate the steam generator’s cooling by running cold water through the steam generator. This can be done using the SET7 function. 1.8.2. Cleaning the water level sensor
Remove lime deposits by wiping or if necessary, with a very fine sandpaper. Check that the sensor sticks’ silicon fittings are not fractured. Change the sensor if necessary.

mg/l
Iron concentration| Colour, Odour, taste, precipitates in the steam generator| < 0,2 mg/l
Hardness: most important substances are
manganese (Mn) and lime, i.e. calcium (Ca).| Precipitates in the steam generator| Mn: < 0,05 mg/l
Chlorinated water| Health risk| Forbidden to use
Seawater| Rapid corrosion| Forbidden to use
Flow rate in the incoming water pipe (measuring: let the water run from the incoming pipe for one minute and measure the amount of water)| Flow too slow: breaks in steam generation
Flow too fast: water running from the steam pipe| 8–12 l/min

Table 1. Water quality requirements
1.8.3. Decalcification
Tap water contains impurities, e.g. lime, which may in time block the internal parts of the steam generator.
The amount of lime in water (water hardness) and thus the need for decalcification varies from region to region. If the tap water is hard, it is recommended to install a softener to the building’swater distribution system. The requirements for the water are listed in table 1.
Decalcification with citric acid solution The vapours of the citric acid solution are harmless.
Besides citric acid you can use also other materials for the decalcification, follow always the instructions in the packaging.

1. Mix 50–80 grams of citric acid with one litre of water.
2. Start the steam generator and leave it on for 10 minutes.
3.  Turn it off from the main switch (see Fig. 3).
4.  Remove the water level sensor located on top of the steam generator (see Fig. 4)
5.  Pour the citric acid solution into the water tank and re-attach the water level sensor
6.  Let the solution work for one hour.
7.  Turn the main switch on. If the memory for power failures is on, the steam generator will start without pushing button steamer on/off. Rinsing (manual discharge valve)
8.  Empty the water reservoir and close the discharge valve.
9. Turn the steam generator on with button steam and leave it on for 10 minutes.
10. Turn the steam generator off with button steam, empty the water reservoir and close the discharge valve. Rinsing (automatic discharge valve)
11.  Turn the steam generator on with button steam and leave it on for 10 minutes.
12. Turn the steam generator off with button steam and leave it off for 5 minutes.

1.8.4. Cleaning the Steam Nozzles
The steam nozzles can be cleaned with mild soap solution.
1.9. Troubleshooting
If an error occurs, the control panel will show a device number and an error message, which helps troubleshooting the cause for the error. The user can check only the points marked with an asterisk (*). All other maintenance must be done by professional maintenance personnel.
Error message and fixing

| Temperature sensor’s measuring circuit broken. Check the wiring and connections from connectors to the sensor.
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| Temperature sensor’s measuring circuit short-circuited. Check the wiring and connections from connectors to the sensor.
| Overheat protector’s measuring circuit broken. Press the overheat protector’s reset button ( 2.10.). Check the wiring and connections from connectors to the overheat protector’s sensor.
| Water level low. Check if there is water in the measurement cup. Check the water inlet, solenoid valve, discharge valve, and the water level sensor.
| There is still water in the reservoir even rinsing and discharging has been done. Check if there is water in the measurement cup. Check discharge valve and the water level sensor.
| Connection failure between the control panel and the steam generator. Check the cable and the connectors.
| Water reservoir empty after rinsing. Check if there is water in the measurement cup. Check the water inlet, solenoid valve, discharge valve, and the water level sensor.
| Water reservoir full when starting the filling (starting, stopping, rinsing cycle). Check the discharge valve and the water level sensor.
| Too many fillings within five minutes. Check the water inlet, flow rate (table 1), solenoid valve, discharge valve and the
water level sensor.
| Sufficient water level has not been reached within 10 minutes after the device has been turned on. Clean the measurement cup and check the wiring.
| Sufficient water level won’t be reached when vaporizing. Check the water inlet* and discharge valve.

Several errors Error messages run in the display.

Breaks in steam generation| Breaks in steam generation are completely normal. The steam generation pauses
when the steam generator takes water in the water reservoir and when the
temperature in the steam room rises to the desired value.
---|---
Glucking| There are water pockets or valleys in the pipes. Straighten the pipes tilted away from the steam generator.
Water reservoir smells like the fragrance| Check that fragrance doesn’t flow to the water reservoir from the steam pipe.

Other messages

| The time indicator light starts blinking when 200 hours has passed from the previous service. Perform service ( 1.9.). Reset counter after service.
---|---
Flushing| Text is running in the display. Rinsing.
Pairing| Text is running in the display. The control panel will connect with the steam generators that are ready for use.
Done| The connection between devices is done.

INSTRUCTIONS FOR INSTALLATION

1. Steam nozzle G½”
2. Manual discharge valve G½”
3.  Pressure release valve G½”
4. Steam pipe connection G¾”
5. Sediment cup
6. Control panel
7. Temperature sensor Optional parts and devices:
8. Automatic discharge valve G½”
9.  Connection part for fragrance pump
10. Fragrance pump
11. Fragrance

Fig. 5 Installation
2.1. Prior to Installation
Prior to installing the steam generator, study the instructions for installation, and check the following points:

• The steam generator output should correspond to the volume of the steam room. Table 2 gives guidelines for the minimum and maximum volumes for each steam generator and wall  material.
• The supply voltage is suitable for the steam generator.
• The fuses and connecting cables meet the regulations and their measurements match table 2.
• The installation place of the steam generator must meet the minimum requirements for safety distances given in figure 6 and the place must be as defined in section 2.2.

2.2. Installation Place and Fastening
The steam generator must be installed in a dry interior space. The steam generator must not be installed in a place where it may freeze or where it is subject to harmful substances. The maximum allowed temperature around the device is 30°C.

• The room must have a floor drain for the discharge water. Do not install the device straight above the drain, because steam coming up from drain wets the steam generator and may cause problems.
• If the steam generator is installed inside a cabinet or such closed space, sufficient ventilation must be provided around the device.
• You can place the steam generator in lower space by turning mounting parts to horizontal plane and cutting the sediment cup smaller (figure 4). Fasten the steam generator firmly to the wall or to the basis with screws suitable for the material.

2.3. Water supply and discharge waterconnections
See figure 5. The water supply pipe must be equipped with a stop valve and vacuum breaker.
The steam generator discharge water pipe must be led to the installation room’s floor drain.
The discharge water must not be led to the steam room, because the water is very hot (70 °C)!
Install the pipes tilted away from the steam generator.
2.4. Electrical Connections
The steam generator must be connected to the mains in accordance with the current regulations and by an authorised, professional electrician. See figure 9 for electrical connections.
2.4.1. Installing the Temperature Sensor
Install the temperature sensor to the steam room ceiling or to a wall 1700–3000 mm above  he floor level.
Drill a 7.5 mm diameter hole, push the sensor into the hole, and seal with silicone. Do not install the sensor near doors or  ventilation openings. The allowed area is shown in figure 7.

Model| Output| Recommended steam room size| Steam output capacity| 230 V 1N~| 400 V 3N~
---|---|---|---|---|---
Light wall (acrylic, etc.)| Tiled light wall| Tiled stone wall, etc.| Cable| Fuse| Cable| Fuse
| kW| *| | *| *| | | kg/h| mm2| A| mm2| A
SGH45| 4,5| 2–5| 2–7| 2–4| 2–6| 2–3,5| 2–4,5| 5,5| 3 x 6| 25| 5 x 1,5| 3 x 10
 SGH60| 5,7| 2,8–8| 3,5–11| 2–6| 3–9| 2–5| 2–7,5| 7,6| 3 x 6| 32| 5 x 1,5| 3 x 10
SGH90| 9,0| 6–12| 9–17| 4,5–10| 7,5–14| 3–8| 6–11,5| 12,0| 3 x 10| 40| 5 x 2,5| 3 x 16
 SGH110| 10,8| 10–14,5| 15–21| 8–12| 12–17| 6–10| 10–14| 14,6| –| –| 5 x 2,5| 3 x 16
SGH150| 15,0| 12–19,5| 17–28| 10–16| 14–23| 8–13,5| 12–18,5| 20,1| –| –| 5 x 2,5| 3 x 25

Table 2 Installation details
2.5. Steam Pipes
The steam from the steam generator is led to the steam room with copper pipes. The minimum steam pipe inside diameter is 15 mm. You can connect the steam generator to copper piping with a transparent silicon hose which inside diameter is 25 mm.
Transparent pipes help to locate potential problems.
The pipes must be carefully insulated. The maximum length of a well insulated steam pipe is 10 metres. It is recommended to place the steam  generator as close to the steam room as possible, to minimise the length of the steam pipes.
If more than one steam nozzles are used, each steam pipe going to the nozzles must be equipped with a flow control valve, so  that the steam is evenly distributed into the team room. Figure 7A. Adjusting the valves:

• Turn all the valves completely open.
•  If there is significantly more steam coming from one of the valves, turn the flow down.
• Do not turn the flow down on all the valves.

The steam must be able to flow freely from the nozzles. If there is a blockage in the steam nozzles and/or pipes, the steam will come out of the overpressure valve (Figure 5).
The far end of the steam pipe must be tilted towards the steam room. There must be no excess bends, water pockets or cut offs in the pipes. Figure 10B.Fig. 10 Steam nozzles and pipes
2.6. Installing the Steam Nozzles
Attach the steam nozzle to the end of the steam pipe and seal the steam pipe lead in with silicone. The nozzles should be placed 100–300 mm above the floor level. The thread size of the nozzle is G½” (female). Figure 10A.
Point the opening of the nozzle downwards. Make sure the steam does not burn the bathers. Place the nozzles so that one can not touch them by accident.
2.7. Installing the Fragrance Pump
The fragrance pump is installed to feed fragrance into the steam pipe. The joint between the feeding tube and the steam pipe must be as close to the steam nozzle as possible. By doing this, as little fragrance residue as possible will accumulate in the steam pipe in the course of time. See figure 5. See figure 9 for electrical connections.
2.8. Installing the Automatic
Discharge Valve See figure 3. See figure 6 for electrical connections. When tightening the joint hold tight on the hose of steam generator and do not let it spin. After installation, activate the automatic discharge valve from the control panel (SET3).
2.9. Installing the Control Panel

1. Thread the data cable through the hole in the back cover.
2.  Fasten the back cover to a wall with screws.
3. Push the data cable to the connector.
4. Press the front cover into the back cover.

Fig. 11 Fastening the control panel
The control panel is splashproof and has a small operating voltage.
The panel can be installed in a dry area e.g. in the  washing or dressing room, or in the living quarters. The panel can not be installed in the steam room. Figure 12. Conductor tubing (ø 30 mm) inside the wall structure allows
you to thread the data cable hidden within the wall – otherwise the installation will have to be on the wall surface.
2.10. Resetting the Overheat Protector
The reason for the going off must be determined before the button is pressed. The overheat pro- tector may be reset only by a professional maintenance person.

SPARE PARTS

| model| pcs
---|---|---
1| Heating element 1500 W/230 V
Heating element 1900 W/230 V
Heating element 3000 W/230 V
Heating element 3600 W/230 V
Heating element 5000 W/230 V| ZG-330T
ZG-340T
ZG-350T
ZG-360T
ZG-365T| SGH45
SGH60
SGH90
SGH110
SGH150| 3
3
3
3
3
2| Sediment cup| ZSTM-170| | 1
3| Manual discharge valve| ZG-575| | 1
4| Overpressure valve| ZG-580| | 1
5| Water level sensor| ZSG-092| | 1
6| Nut| ZSG-014| | 1
7| Solenoid valve| ZG-379| | 1
8| Circuit board| WX645| | 1
9| Contactor| ZSK-778| | 1
10| Main switch| ZSK-684| | 1
11| Temperature sensor| ZG-660| | 1
12| Control panel white| WX388| | 1
Optional parts and devices
13| Automatic discharge valve| ZG-00| | 1
14| Data cable 5 m| WX311| | 1
15| Fragrance pump| ZG-900| | 1
16| Connection part for fragrance pump| ZSTM-195| | 1

We recommend to use only the manufacturer’s spare parts.
DATA SHEET

CENTRAL EUROPE
semiotic GmbH | Division of Harvie Group
Gardenburger Straße 31,
A-4840 Vöcklabruck
T +43 (0) 7672/22 900-50 | F -80
info@sentiotec.com | www.sentiotec.com
GLOBAL
HARVIA
P.O. Box 12, Teollisuustie 1-7,
40951 Murage, FINLAND
T +358 207 464 000
harvia@harvia.fi | www.harvia.fi
semiotic GmbH | Division of Harvie Group | Gardenburger Straße 31, A-4840 Vöcklabruck
T +43 (0) 7672/22 900-50 | F -80
info@sentiotec.com 
www.sentiotec.com

References

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