6.2 - General recommendations regarding the gas supply .................... 40 6.3 - Type of gas for which the appliance is set......................40 6.4 - Conversion of the appliance from one type of gas to another ................41 6.5 - Ignition ..................................43 GEMTEX MYDENS...
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8.16 - Removing the flow meter ............................. 78 8.17 - Removing the safety valve ........................... 79 8.18 - Secondary heat exchanger for the production of DHW ..................79 8.19 - Emptying the appliance on the central heating side ..................... 80 GEMTEX MYDENS...
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8.24 - Water temperature measurement sensors ......................81 8.25 - External temperature sensor ..........................81 8.26 - Wiring diagram ..............................82 9 - TECHNICAL DATA ............................84 10 - COMMAND MENU DIAGRAM ........................86 11 - EU DECLARATION OF CONFORMITY ......................87 12 - ErP PRODUCT SHEET ..........................88 GEMTEX MYDENS...
- UNI 7129-5 standard capabilities or a lack of experience or knowledge, unless - UNI 7131 standard they are supervised or have been instructed on use of the - IEC 64-8 standard appliance by a person responsible for their safety. GEMTEX MYDENS...
15 = Boiler with maximum heat input of 14 kW 24 = Boiler with maximum heat input of 25 kW 34 = Boiler with maximum heat input of 32 kW Gas condensing boiler fitted with a full premix burner. GEMTEX MYDENS...
EU Directive 2012/19/EU. For further information regarding correct decommissioning of these units, users can contact the public service in charge or retailers. GEMTEX MYDENS...
Check figure 5-1 concerning the minimum safety distances for installation and future maintenance. Figure 4-4 key – Distances “A” and “B” must be assessed during installation so that rain does not reach the appliance directly. Figure 4-4 – Example of a partially protected place GEMTEX MYDENS...
The installer or project technician must take this into consideration in order to guarantee the correct domestic hot water flow rate to the utility. RIC17 - 2012 13,3 16,6 Water flow rate (l/min) Figure 4-6 – Domestic hot water losses curve GEMTEX MYDENS...
6 - Central heating return 3/4" in the 15 and 24 models 1" in the 34 model 7 - Fumes exhaust 8 - Support attachments 9 - Ø20 condensate drain Figure 5-2 – Boiler dimensions and attachments centre-to-centre distances GEMTEX MYDENS...
If the guideline values listed in the following table are not met; If the pH value of the heating water is less than 7,5 or more than 9,5 GEMTEX MYDENS...
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- Sentinel X 500 - Sentinel X 200 If you have used the above-mentioned additives, inform the end user about the measures that are required. Inform the end user about the measures required for frost protection. GEMTEX MYDENS...
Insert a closing cock before the cold water inlet, useful for maintenance work. Connecting the domestic hot water service is not essential; if the boiler is used for central heating only, connect the cold water pipe to fill the central heating system and close the DHW outlet. GEMTEX MYDENS...
The anti-odour siphon “G” in figure 5-6 is provided on request. WARNING! If the safety valve is not connected to the drain, whenever the valve intervenes, it could cause damage to persons, animals or objects. 020002.01.017 Figure 5-4 – Condensate drain pipe GEMTEX MYDENS...
Couplings and raccords “A”, “B”, “C”, “D”, “E”, “F”, “G”, in some models could be not supplied by factory. Figure 5-5 – Water and gas connections min10 mm max 30 mm 020002.01.028 Figure 5-6 – Siphon funnel (on request) GEMTEX MYDENS...
4.- Before refitting the lower cover, trim the entire part between walls “C” and “D”, from the outer edge to the central slot (only in the rear part), to allow the softener “B” to be housed. Figure 5-8 – Polyphosphate softener (on request) GEMTEX MYDENS...
M a x i m u m s u p p l y temperature (Par. 2024) M i n i m u m s u p p l y temperature (Par. 2023) ON/OFF hysteresis Figure 5-11 – Operating rules for 0-10 VDC analogue input GEMTEX MYDENS...
Once the CR04 remote control has been connected, all the room temperature adjustments and domestic hot water temperature operations must be carried out directly on the remote control. Remember to follow the instructions in the CR04 remote control manual carefully. GEMTEX MYDENS...
4184 = 2 4184 = 1 * = Number of 2001 = 0 4147 = * appliances The S4 Sensor cascade switch is A-LINK located here To the next appliance Figure 5-13 – Wiring diagram for appliances in a cascade GEMTEX MYDENS...
11 Hydraulic safety unit (installer’s duty) 12 Supply to the central heating system 13 Return from the central heating system 14 Indirect water heater temperature probe (standard for mod. “B” only) Figure 5-14 – Hydraulic connection to indirect water heater with coil GEMTEX MYDENS...
- C83, separated with wall intake or another point independent from the intakes of other appliances, and flue exhaust. - C93, separated with exhaust on roof and intake in pre- existing channel. Figure 5-15 – Exhaust/intake systems GEMTEX MYDENS...
In rooms where gas appliances are installed, it may become necessary to evacuate stale air, as well as introducing combustion agent air, the result being the release of an additional equal amount of clean air. GEMTEX MYDENS...
1 metre from each other. The brackets must be fixed to rigid walls that can support the weight of the pipe itself. Figure 5-18 – Fixing the exhaust and intake pipes GEMTEX MYDENS...
The condensate produced in the vertical pipe must all be conveyed into the boiler. The intake must slope towards the outside to prevent rain water entering. Figure 5-20 – Example of “80/80 PP system” installation GEMTEX MYDENS...
9 at the end of the manual. Every 90° bend has a loss equivalent to the value in section 9. Every 45° bend has a loss equivalent to the value in section 9. Figure 5-22 – Pre-installation centre-to-centre distances Figure 5-23 - Positioning the coaxial pipe GEMTEX MYDENS...
9 at the end of the manual. Every 90° bend has a loss equivalent to the value in section 9. Every 45° bend has a loss equivalent to the value in section 9. Figure 5-25 – Pre-installation centre-to-centre distances Figure 5-26 – Positioning the coaxial pipe GEMTEX MYDENS...
5.17.8 - “60/100PP coaxial” system: installation examples When setting up a coaxial exhaust (see figure 5-27), whether vertical and horizontal, the exhaust pipe must slope upwards so that the condensate flows into the boiler. Figure 5-27 – Examples of coaxial pipe installation GEMTEX MYDENS...
1 metre from each other. The brackets must be fixed to rigid walls that can support the weight of the pipe itself. Figure 5-30 – Fixing the exhaust and intake pipes GEMTEX MYDENS...
“F” (which can be identified using a pre-cut piece on the lower surface) from the gasket “D” with a cutter (fig. 5-47). 62403659_002 Figure 5-32 62403659_003 Figure 5-34 62403659_004 62403659_005 Figure 5-35 Figure 5-33 GEMTEX MYDENS...
1.5 bar again. with “A”) and the other end of the hose into the funnel; WARNING! If there is an automatic load group, no manual intervention is required to fill the system. Figure 6-1 – Filling the condensate drain siphon GEMTEX MYDENS...
(methane) of group H of the second family, at a supply pressure of 20 mbar. 3P-G31-37mbar LPG This means that the boiler is set to operate with G31 gas (propane, also known as LPG) of group P of the third family, at a supply pressure of 37 mbar. GEMTEX MYDENS...
C - From another room, or from a neighbour’s property, immediately call a professionally qualified technician or the gas supply company. Call the Fire Service if the former are not available. 020002.01.042 Figure 6-4 – Replacing the gas nozzle GEMTEX MYDENS...
14.- Check for any gas leaks at the pressure point using suitable tools. WARNING! Perform the gas leak test using a soap and water solution only. The use of naked flames is prohibited. 020002.01.023 A - Gas inlet pressure point. Figure 6-7 – Gas valve GEMTEX MYDENS...
CO2; 14.- Once the check has been completed, seal screw “B” in figure 6-9 with red paint or a similar method; 15.- Access the “installer” profile again as detailed in 0200 section 7.16 and set parameter GEMTEX MYDENS...
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020002.01.015 Figure 6-8 – Combustion analysis points 020002.01.045 A - CO2 adjustment screw at maximum power; B - CO2 adjustment screw at minimum power; Figure 6-9 – Gas valve GEMTEX MYDENS...
5 - If the water temperature is too cold, the flow rate must be reduced using selector “A” in figure 6-11, until the parameter to obtain the desired power 2014 desired temperature is reached. necessary in central heating mode 020002.01.016 Figure 6-11 – Domestic hot water flow rate selector switch GEMTEX MYDENS...
(below the minimum, the domestic hot water is set the first month of operation to remove any air bubbles in the to OFF) or for scrolling through and changing the value system. of the parameters T - On/off switch U - Appliance in anti-freeze mode GEMTEX MYDENS...
Once the boiler has been ignited correctly, it will continue to operate for the service requested. Figure 7-2 key B A C A = System fill knob B = Closing direction C = Opening direction 020002.01.044 Figure 7-2 – System fill cock GEMTEX MYDENS...
; “Control from input 0-10 VDC with TA”: The heating supply temperature is adjusted by means of the 0-10 VDC signal as shown in figure 5-11. The opening or closing of the room thermostat has priority over the 0-10 VDC signal adjustment. GEMTEX MYDENS...
- large systems, with radiant panels (low temperature), where each area is controlled by its own room thermostat and the boiler pump is stopped only when all area thermostats are satisfied (appropriate electrical system set-up required). GEMTEX MYDENS...
7.10.1, with the advantage that the pump’s continues operation stabilises the room temperatures and makes them uniform, especially where some of the heat system loops have flow resistances that are much higher than others. GEMTEX MYDENS...
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= Minimum heating temperature setting 2024 Par. = Maximum heating temperature setting 2025 Par. = Heating stop spring temperature 2109 Par. = Adjusting the line parallelism Figure 7-3 – Climatic adjustment graph for “high temperature” systems (with radiators) GEMTEX MYDENS...
On request, the boiler can blocking it. The diverter valve and the indirect water heater be manufactured with automatic system fill. pump (if present) are activated at the same time for the same reason. GEMTEX MYDENS...
Delivery temperature (according to sensor) User °C 1006 Fumes temperature User °C 1007 Return temperature User °C 1008 Ionisation current (see section 8.22) User μA 1012 Temperature required by climatic curve or by input 0-10 V User °C GEMTEX MYDENS...
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Input 0-10 V User volt 1090 Days until maintenance (negative when the deadline has expired) User days 1098 Command board version User Hexadecimal 1099 Appliance software version User Hexadecimal 1995 Display software version User Hexadecimal * N/A = Not applicable; GEMTEX MYDENS...
Factory 0-1275 2019 Climate - Winter heating temperature Installer °C 20-90 2020 Climate - Outside winter temperature Installer °C -25-25 2021 Climate - Spring heating temperature Installer °C 20-90 2022 Climate - Outside spring temperature Installer °C 0-30 GEMTEX MYDENS...
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Flow rate at which the setpoint can be reached at Factory l/min minimum power (N/A) 2062 Flow rate at which the setpoint can be reached at Factory l/min maximum power (N/A) 2063 DHW modulation timing ON/OFF Factory Secs GEMTEX MYDENS...
Respond according to the last error displayed. more than 20 hours Loc 5 Fan stopped for more Check it is powered at 230 VDC. If the fan is powered, it must be replaced; otherwise, than 60 seconds replace the command board. GEMTEX MYDENS...
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Replace the command board. command board Loc 20 Flame present 10 Replace the gas valve or the command board. seconds after gas valve is closed Loc 21 Flame present before Replace the gas valve or the command board. ignition GEMTEX MYDENS...
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Loc 36 Software error on the Replace the command board. command board Loc 37 Software error on the Replace the command board. command board Loc 38 Software error on the Replace the command board. command board GEMTEX MYDENS...
8.24. Check the elec- the electric circuit is damaged, repair it. Where neither tric cables for connection between the sensor and of the two previous cases apply, replace the com- the command board. mand board. GEMTEX MYDENS...
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Err 136 Software error on the Replace the command board. command board Err 137 Software error on the Replace the command board. command board Err 138 Software error on the Replace the command board. command board GEMTEX MYDENS...
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Err 165 Supply current too low Power supply current too low for more than 60 seconds Err 166 Supply current too high Power supply current too high for more than 60 seconds N/A = Not applicable; GEMTEX MYDENS...
(contact open or short- Check that it has been connected correctly. of the two previous cases apply, replace the com- circuited) mand and control board. AttE 206 Cascade probe error Replace the command and control board (contact open or short- circuited) GEMTEX MYDENS...
WARNING! Before any maintenance work, disconnect the appliance from the electrical power supply, using the relevant switch nearby. WARNING! Close the gas cock before any maintenance work GEMTEX MYDENS...
2. - In case of obstructions in the drain pipe proceed with cleaning the pipe; in case of other damage indicated above proceed with replacing the valve. GEMTEX MYDENS...
1. - Check that after attempts to start the appliance, with the gas shut-off valve closed, the appliance goes into lockout mode and the “Loc 1” message appears on the display. 2. - If the lock message does not appear, replace the command and control board. GEMTEX MYDENS...
“G” To access the electrical connections board: 1.- Turn the command board “D” towards the front; 2.- Slide cover “E” out using the closing flaps “F”; 020002.01.018 Figure 8-1 – Removing the casing and opening the command board GEMTEX MYDENS...
11.- Check that there are no gas leaks between the joints manufacturer for information on replacing it. removed. WARNING! Perform the gas leak test using a soap and water solution only. The use of naked flames is prohibited. 020002.01.024 Figure 8-2 – Removing the burner fan unit GEMTEX MYDENS...
11.- Check for any gas leaks using the relevant tools; WARNING! Perform the gas leak test using a soap and water solution only. The use of naked flames is prohibited. Figure 8-3 – Positioning the electrodes on the burner 020025.01.004 Figure 8-4 – Removing the electrodes GEMTEX MYDENS...
9.- Fit curve “G” on the new gas valve, taking care to position gasket “H” (supplied in the kit) correctly in the kit; the one removed previously can be disposed of; 020025.01.005 020025.01.040 Figure 8-5 – Dismantling the gas valve GEMTEX MYDENS...
4.- Loosen fitting “C”; 5.- Extract the expansion tank “D” towards the front; 6. - Replace the tank. 7.- Restore the pressure in the central heating system as per section 7.2. 020002.01.025 Figure 8-6 – Access to the expansion tank GEMTEX MYDENS...
8.3; 3.- Extract drive bar “A” towards the front; 4.- Slide pressure sensor “B” upwards and extract it. 020025.01.026 Figure 8-11 – Replacing the pump motor 020025.01.036 Figure 8-12 – Removing the central heating circuit pressure sensor GEMTEX MYDENS...
WARNING! This filter is intended as a precaution only. A filter with greater capacity must be installed outside the boiler, on the cold water inlet, as specified in section 5.6. 020025.01.033 Figure 8-15 – Removing the flow meter GEMTEX MYDENS...
5.- Unscrew bolts “A”; 6.- Move the secondary heat exchanger “B” backwards and turn it as per figure; 7.- Extract the heat exchanger “B” towards the front of the boiler. 020025.01.037 Figure 8-17 – Removing the secondary heat exchanger GEMTEX MYDENS...
3.-Mmake sure that at least one of these is at a height below the level of the boiler. 020002.01.038 Figure 8-19 – Opening and closing direction of cocks Figure 8-18 – Heating circuit drain valves A = Open B = Closed GEMTEX MYDENS...
8.25 - External temperature sensor On request, the external temperature sensor can be 1004 connected to the boiler (see section 5.14.5). The electrical resistance between the two sensor contacts must correspond to figure 8-21. Figure 8-21 - External temperature sensor curve GEMTEX MYDENS...
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(see 19 - System fill solenoid valve example above). This is to identify 20 - Slave appliance BUS the correct follow-on of the cables on the next page. 21 - Cascade sensor (1015) 22 - Master appliance BUS GEMTEX MYDENS...
Instantaneous DHW production (dt 30°C) l/min 12.9 16.0 Instantaneous DHW adjustment range °C 40-60 40-60 DHW adjustment range with indirect water heater °C 40-70 40-70 40-70 Design temperature °C Maximum central heating temperature °C Minimum central heating temperature °C GEMTEX MYDENS...
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Max. negative pressure allowed in the fumes exhaust/air intake system Condensate maximum flow rate Condensate average acidity Operating room temperature °C 0.5 ; 50 0.5 ; 50 0.5 ; 50 Boiler weight * In these conditions, the appliance power is reduced by 10% GEMTEX MYDENS...
(see section 7.17) Example of Menu 0.000 menu parameters (see section 7.16) Return to normal operation Example of Return to normal operation 0.200 menu parameters (see section 7.16) Figure 10-1 - Command menu diagram GEMTEX MYDENS...
Monitoring of the product was carried out by the notified body shown on form “C”. (The warranty number corresponds to the serial number) This declaration is issued as stipulated by the aforementioned directives. Meldola (FC) ITALY, (Date of construction). ________________________ Alessandrini Arturo Sole Director GEMTEX MYDENS...
According to Regulations (EU) no. 811/2013 and no. 813/2013. N/A = Not applicable. (*) High-temperature regime means 60°C return temperature and 80°C supply temperature. (**) Low-temperature regime for condensing boilers means 30°C, for low-temperature boilers, 37°C, and for other appliances, 50°C return temperature GEMTEX MYDENS...
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F o r t h e U K c o n t a c t : H E A T I N G S O L U T I O N S L T D 01256 587 800 info@gemtex.co.uk www.gemtex.co.uk 65 Basepoint Business Centre Aviation Business Park...
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