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Summary of Contents for Hermann EURA 23 E
- Page 1 EURA 23 E – 28 E 23 SE – 28 SE – 32 SE uick guide echnical Data nstallation, adjusting and maintenance instructions ser instructions GAS BOILERS...
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Page 2: Warning
Assigning all the operations for the first ignition to a Hermann Authorized Service Center the particular and exclusive Hermann Conven- tional Warranty is activated. For further information consult the coupon which you can find in the boiler’s documents envelope. -
Page 3: Installation
— In case of fault and/or bad operation of the appliance, disconnect it immediately and do not try to repair it by yourselves. [HERMANN Authorized Servicing Boiler servicing and repair must be carried out exclusively by Centres] [qualified technicians], which will use original spare parts. -
Page 4: Table Of Contents
NDEX Warning ......... 2 First firing, regulation and Technical data....... 5 servicing instructions ....21 Gaining access to Installation ........8 manual regulation devices ..... 21 Safety laws and rules referred to Preliminary gas control ....... 21 technicians assigned to boilers MAX-MIN pressure adjustment installation ........ - Page 5 ECHNICAL DATA i t r c i f ° n c i f c i f ÷ ° ÷ ÷ ÷ ÷ ÷ ° ° 0 v i t y t i c t i ÷ ° ÷ ÷ ÷ ÷...
- Page 6 DIMENSIONS EURA E - SE EURA 23-28-32 SE models only: l i o l t u EURA - AVAILABLE PUMP CAPACITY Water flow l/h – EURA 28 available pump capacity (closed By-pass) – EURA 28 available pump capacity (automatic By-pass) –...
- Page 7 BOILER SCHEMATIC EURA E WARNING: This scheme is made for in- formation only. To make boiler hydrau- lic connection either use fixing jig or the drawing inserted in the section “Instal- lation”. Drain valve Manometer By-pass Three way motorised valve Loss of water switch Heating system safety valve 3 bar Pump...
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Page 8: Reference Norms And Laws For Installation
NSTALLATION Safety laws and rules referred to technicians assigned to boilers installation Place here all necessary advices according to national rules about WORK SAFETY Exemple: Law number XXXX “Actuation of 89/391/CEE; 89/655/CEE, 90/296/CEE, 90/934/CEE, 90/679/CEE, (work safety)” Law number XXXX “Actuation of 89/686/CEE (21 Dec 1989)”... -
Page 9: Boiler Location
Boiler location INSTALLATION ROOM When having an heat ouput lower than 35 kw (about 30000 Kcal/h), particular features for the installation room are not required. Shortly, all installation rules assuring a safe and regular gas boiler operation, must be strictly respected. Place here all necessary advices according to national rules about: - Installation room requirements... -
Page 10: Fixing The Boiler
Fixing the boiler For the installation proceed as follows: Appliance size and clearances for maintenance: 50mm from both sides and 300mm from the bottom are reccommended. — Attach template to the wall (see figure below) with two brackets suitable to carry boiler weight; —... -
Page 11: Hydraulic Connections
— Connect the safety evacuation ducts of the boiler to an evacuation funnel. If safety valves are not connected to an evacuation device, their intervention could flood the room. Hermann cannot be held responsible for any damage arising from that situation. -
Page 12: System Filling
System filling Once the boiler is hydraulically connected, it is BOILER BOTTOM VIEW possible to fill the system. Warning: if boiler is installed in a room where temperature can drop below 0°C, it is recommended to fill the heating system with an anti freezing mixture. -
Page 13: Gas Connection
HERMANN Service Centre] [a qualified technician] for gas conversion; an interception valve must be installed upstream the appliance;... - Page 14 Special interface card, supplied in the remote control kit, must be used. All low-voltage wirings (e.g. TA, SE and original Hermann remote control) must be kept sepa- rate from power supply cables, as to avoid boiler malfunctionings due to electrical noise. It is advisable to use separate tubes for them.
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Page 15: Chimney Connections Eura E (Natural Draught)
Chimney connections EURA E (natural draught) Place here all necessary advices according to national rules about CHIMNEY CONNECTIONS of OPEN chamber boilers These diagrams are to explain the most important ITALIAN laws concerning chimney connections (for EXAMPLE purpose only) 2500 mm MAX PRODUCTS TEST POINT FLUE 2 x d... -
Page 16: Chimney Connections Eura Se (Forced Draught)
Chimney connections EURA SE (forced draught) NOTE ON FLUE INSTALLATION When fitting air inlet and flue outlet horizontal ducts, it is necessary to make sure there is a slope of 2÷5% downwards from the boiler to the out- side (see diagram). This is essential to guaran- 2% ÷... - Page 17 In case of evacuation to wall, the positions indicated in the following drawing and table must be respected: a i l c i t l a t o i t d l i d l i o l f i t r y l l y l l h t i...
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Page 18: High Capacity Fan Eura 23 Se
High capacity fan EURA 23 SE For EURA 23 SE (forced draught) it is possible to install, on request, an “high capacity fan”, allowing an higher length of separate flue systems (see table): l n i Ø ASSEMBLING INSTRUCTIONS It is advisable to install the high capacity fan, before flue kit, avoiding any possible hindrance during assembling operations. -
Page 19: Flue Options Eura Se
Flue options EURA SE AIR INLET AND PRODUCTS OUTLET THROUGH SEPARATE PIPES Attention: see table and, if required, install the diaphragm “D” as indicated in the figure besides (any additional 90° bend = 0.5 linear meters, 45° bend = 0.25 meters). Ø... -
Page 20: Flue Options
Flue options EURA SE AIR INLET AND PRODUCTS OUTLET THROUGH COAXIAL SYSTEM Attention: see table and, if required, install the diaphragm “D” as indicated in the figure besides (any additional 90° bend = 1 linear meter, 45° bend = 0.5 meters). Ø... -
Page 21: Regulation And Servicing Instructions
ATTENTION: the operations described below must be carried out only by qualified personnel [authorized by HERMANN]. When regulation/measuring is over, remember to tighten pressure tapping point screws and ALWAYS check for gas leaks! Before boiler ignition, verify that pump is not blocked due to... -
Page 22: Max-Min Pressure Adjustment On Gas Valve
— To make gas pressure controls, insert manometer probes in pressure tapping points available on to gas valve (see picture). Note: To check that gas pressure and flowrate are sufficient to guarantee perfect boiler operations, make such controls while burner is working. MAX-MIN pressure adjustment on GAS valve GAS VALVE... -
Page 23: Regulation Programming
Regulation programming All these operations must be performed by QUALIFIED TECHNICIANS ONLY. Operations performed by not qualified persons can cause MALFUNCTIONS and/or DAMAGE. Hermann cannot be considered liable for eventual damages caused by not qualified persons. Do not modify default settings if not necessary GENERAL PROCEDURE —... -
Page 24: Slow Opening Regulation
Parameter numbers, description, available values and default settings: 1 Gas type: Natural gas = 0 / LPG = 1. Default setting: 0. See “GAS transformation” for the complete regulation procedure. 2 Temperature range for heating system: Normal = 0 / Reduced = 1. Default setting: 0. Leave default setting unchanged. -
Page 25: Max Heating Power Regulation
Slow opening regulation GAS VALVE When boiler is ignited, burner is fed for 8 seconds with a gas at a lower pressure then usual; afterwards pressure increases up to requested values. Such ‘slow opening’ pressure must guarantee correct and immediate ignition avoiding noises while igniting. - Page 26 BURNER POWER/PRESSURE TABLE — EURA 23 E BURNER POWER/PRESSURE TABLE — EURA 28 E First firing, regulation and servicing instructions...
- Page 27 BURNER POWER/PRESSURE TABLE — EURA 23 SE BURNER POWER/PRESSURE TABLE — EURA 28 SE BURNER POWER/PRESSURE TABLE — EURA 32 SE — — — — — — First firing, regulation and servicing instructions...
- Page 28 Gas transformation ATTENTION: the operations described below must be carried out only by qualified personnel [authorized from HERMANN Ltd]. For gas conversion, use the nozzles supplied by boiler manufacturer only. Using LPG, it is absolutely necessary to install a pressure reducer upstream the boiler.
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Page 29: Combustion Check
8. Repeat the following regulations: gas valve MAX-MIN pressure regulation, Slow Opening and Max Heating Output, carefully following the instructions described in the previous pages. 9. Check that there are no gas leaks. 10. Apply the sticker indicating the type of gas (supplied with the kit) on the suitable area on “WARN- ING”... -
Page 30: Draining Eura Boiler
Draining EURA boiler — To correctly drain both heating system and minitank in the sanitary system, it is necessary to manually set three way valve in middle position as described here below: • three way valve (item 3) must initially be in ‘sanitary’ mode (manual control spindle in position ‘S’). -
Page 31: Other Boiler Programme
Other boiler programme Above have been described the main regulations, and most of them require some parameters programming by means of control panel. Control panel allows to modify many other parameters which influences boiler functioning, for perfectly meeting special installation needs. Do not modify default settings if not necessary Heating system flow temperature range: (default value = 0): This parameter must always be set at 0... - Page 32 Re-calibration of motorised mixing valve: (default setting = 0) When boiler is switched on (or after a reset), boiler execute a calibrating cycle of the mixing valve for about 90 seconds which is necessary for the correct sanitary system functioning. During this period any other functions of the boiler are off.
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Page 33: Crypt Warnings For Technical Experts
Crypt Warnings for Technical experts On account of a malfunctioning, boiler can block and shows an alarm code in the middle of the display. Said alarms are displayed together with ‘Service’ writing which means that end user cannot reset boiler by himself without a technical expert. Note: All the alarms that can be reset by end user autonomously are described in section ‘User instruction’. - Page 34 E31 Remote control* (Hermann optional kit only) not working * This applies to Hermann Remote Control optional kit only, and not to third parties chrono thermostats. Cause: Control PCB has verified the presence of a remote control but data are not readable.
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Page 35: Servicing Warnings
— Clean casing with soapy water only. Do not clean casing, other painted or plastic surfaces with thinner. — In any case of parts replacement, it is mandatory to use HERMANN original spare parts. HERMANN declines any responsibility in case of non-original spare parts utilization. -
Page 36: Boiler Internal Components
Boiler internal components EURA 23-28 E Flue hood 12 Automatic filling device Domestic minitank temperature sensor 13 Drain valve Automatic air vent for sanitary minitank 14 Manometer Flue thermostat 15 By-pass Expansion vessel 16 Safety valve 3 bar High temperature safety thermostat 17 Loss of water switch 7a Ignition electrode 18 Flow temperature sensor... - Page 37 EURA 23 SE 12 Automatic filling device Domestic minitank temperature sensor 13 Drain valve Automatic air vent for sanitary minitank 14 Manometer Flue pressurestat 15 By-pass Expansion vessel 16 Safety valve 3 bar High temperature safety thermostat 17 Loss of water switch 7a Ignition electrode 18 Flow temperature sensor 7r Flame detection electrode...
- Page 38 EURA 28-32 SE 12 Automatic filling device Domestic minitank temperature sensor 13 Drain valve Automatic air vent for sanitary minitank 14 Manometer Flue pressurestat 15 By-pass Expansion vessel 16 Safety valve 3 bar High temperature safety thermostat 17 Loss of water switch 7a Ignition electrode 18 Flow temperature sensor 7r Flame detection electrode...
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Page 39: Electrical Diagram
Electrical diagram EURA 23-28 E Note: if optional Remote Control is installed, multizone heating wiring is different. Refer to multizone heating diagram supplied with Remote Control kit. Pump Flow temperature sensor Ignition electrode Room thermostat Automatic filling device Flue thermostat Colours Flame detection electrode High temperature safety... - Page 40 EURA 23-28-32 SE Note: if optional Remote Control is installed, multizone heating wiring is different. Refer to multizone heating diagram supplied with Remote Control kit. Pump External temperature probe Ignition electrode Flow temperature sensor Automatic filling device Colours Room thermostat Flame detection electrode abbreviations: Black...
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Page 41: User Instructions
SER INSTRUCTIONS Warnings for boiler commissioning First ignition must be carried out by qualified technicians (in example HERMANN Authorized Servicing Centres). Gas conversion from a specific gas (natural gas or LPG) to another gas, can be made also when the gas boiler is already installed, but only by a qualified technician. The technician will check that: a) the label technical data of the gas boiler correspond to those of the gas, water and electrical supply lines;... -
Page 42: Warnings
APPLIANCE BOOKLET OR CENTRAL PLANT BOOKLET All appliances, even those installed before August 1 , 1994, must have an appliance booklet (for outputs less or equal 35 kW) or a central plant booklet (for outputs more than 35 kW). All ordinary and special servicing operations and combustion checkings must be written on the booklet, together with the name of the person responsible for servicing. -
Page 43: Gaining Access To Control Panel
Gaining access to control panel To gain access to control panel it is sufficient to softly push in the lower part of control cover, as shown. Switching on/off and running boiler SWITCHING ON — Turn main electrical switch on; green light flashes —... - Page 44 If an external probe has been installed (optional Hermann kit), heating system temperature is automatically controlled by boiler depending on external temperature. Pressing knobs can vary a “dispersion coefficient” (please refer to technical documentation included with said kit). PLUS FUNCTION...
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Page 45: Control Panel Details
Control panel details 16 15 14 13 12 11 630B ON/STAND BY knob • Pressing allows switching boiler on (on mode, green light on) • Pressing once more boiler switches off (stand by mode, green light flashing), leaving anti freezing protection on. SUMMER/WINTER knob •... -
Page 46: Boiler Blocking And Alarm Codes
RESET knob • Before pressing this knob, please refer to “Boiler blocking and alarm codes” to understand what happened and prevent future problems. • Pressing this knob allows to reset boiler after a failure (that could be reset by end user); when such type of failure occurs, warning writing ‘reset’... - Page 47 Hermann Technical Centre. All alarms displayed with red FLASHING light and ‘service’ writing on display MUST be solved by a Hermann technical centre only. All technical description of causes and solutions for ‘service’ alarms are described in “Crypt Warnings for Technical experts”.
- Page 48 Cause 2: Boiler is overheated and safety thermostat forced boiler to block. Solution: Wait 20/30 minutes to cool boiler down then press ‘reset’. If block happens again, please contact a [Hermann Technical Centre] [qualified technician]. E05 Heating system flow temperature sensor damaged...
- Page 49 (radiators included). Anyway, it is recommended to call a [Hermann Technical Centre] [qualified technician] case this operation is very usual. Be careful that if boiler is filled with anti freezing solution, any automatic filling with water will dilute solution.
- Page 50 * This applies to Hermann Remote Control optional kit only, and not to third parties chrono thermostats. Solution: call a [Hermann Technical Centre] [qualified technician]. In these conditions, boiler can only produce domestic hot water. If necessary, ask the technician to make the boiler provisionally work in manual heating: information for this operation are in “Crypt Warnings for Technical experts”...
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Page 51: Warning While Using
HERMANN CONVENTIONAL GUARANTEE CONDITIONS Hermann offers to the customer a particular and exclusive CONVENTIONAL GUARANTEE, which is automatically activated asking the First Ignition to a Hermann Authorized Service Center. The conditions of the HERMANN CONVENTIONAL GUARANTEE don’t prejudge nor invalidate the rights indicated by the European Rule 1999/44/CE actuated with Italian Laws by the Decree 02 Februar 2002 N°24 of which the User is the Owner. - Page 52 GAS BOILERS HERMANN S.r.l. Via Salvo d’Acquisto 29010 Pontenure (PIACENZA) ITALY - Tel. +39.0523.510341 E-MAIL: export@hermann.it www.hermann.it...
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