VARINO GRANDE 350 - 600 Installation and operating instructions Manual VG GB.doc Ygnis article number: 406712 (1NO0G0006-#) Edition 10.07.
VARINO GRANDE 350 - 600 Table of Contents 1. Precautions 2 2. Description 2.1. Fully modulating gas condensing unit 2.2. Conformity and registration 3 3 4 3. Scope of supply 4 4. Technical data 4.1. Main data / operating conditions 4.2. Water quality 4.3. Dimensions 4.4. Technical specifications 4.5. Correction values for different operating conditions 5 5 5 7 9 10 5. Description of the boiler control panel 5.1. Burner management: 5.2. Governor types 11 11 11 6. Installation guide 6.1.
VARINO GRANDE 350 - 600 1. Precautions STEPS TO BE TAKEN IN CASE OF DANGER Close fuel supply, disconnect unit from mains using emergency stop or main switch (outside of the boiler room). Use suitable fire extinguishers to extinguish flames. Occurrence of gas smell - Ventilate the affected rooms thoroughly by opening doors and windows. - Do not use any electronic devices (mobile phone, etc.). - Do not activate any electrical contacts (light, motor, lift, door bell, etc.).
VARINO GRANDE 350 - 600 2. Description 2.1. Fully modulating gas condensing unit The VARINO GRANDE condensing unit sets new standards for energy-saving heat generation from natural gas. The unique power modulation range up to 1:12 enables an almost continuous operation during the main period of the heating season.
VARINO GRANDE 350 - 600 heat exchanger by forming a mixing temperature. The heat exchanger and condenser are constructed in a natural circulation design so that operation is possible with a random combination of high and low temperature return water volumes. The condensate which arises during operation is collected in a stainless steel trough under the condenser and then siphoned off. The VARINO GRANDE is available in two design versions. The standard design is a monoblock version.
VARINO GRANDE 350 - 600 Separated version of the boiler block (VG – TB) - 1 pallet for heat exchanger 1 pallet for combustion chamber 1 pallet for burner hood, waste-gas collector and packing unit with boiler casing 1 pallet for burner, burner support, fan(s), air filter(s), gas block, boiler control panel, documentation and various small parts 1 pallet for boiler cover, boiler base and insulation 4. Technical data 4.1.
VARINO GRANDE 350 - 600 Preparing the water system before putting the boiler into service For any installation (new or renovation), the water system pipes must be thoroughly cleaned. The purpose of this initial cleaning is to eliminate germs and residue that can cause deposits to form. In new installations in particular, residue from grease, oxidised metal, and even copper microdeposits must be removed.
VARINO GRANDE 350 - 600 The use of glycol-based water is prohibited. Unit monitoring If the recommendations listed above (new installation or renovation) have been followed, the unit monitoring is limited to: - Checking the amount of make-up water (fill water volume + make-up water volume < 3 times the unit volume) - Checking the pH level (stable or slightly increasing) - Checking the total hardness (stable or slightly decreasing) We recommend monitoring these parameters two to three times a year.
VARINO GRANDE 350 - 600 VARINO GRANDE - standard (VG - MB) 350 400 450 500 550 600 Overall dimensions L mm 2866 3028 B mm 1170 1320 H mm 1465 1615 Largest single part lxbxh mm 2225 x 1050 x 1465 2323 x 1200 x 1615 Weights Heaviest single part G 15 kg 720 890 Empty weight G 11 kg 975 1180 Water quantity G 16 L 435 590 Boiler Erection site l 11 mm 1710 1783 b 11 mm 1050 1200 t 11 mm 55 Hydraulic system Supply from boiler l 20 mm 417 446 t 20 mm 0 D 20 mm DN 100 Low temperature return l 21 mm 1552 1641 t 21 mm
VARINO GRANDE 350 - 600 4.4. Technical specifications Model VG Power Boiler nominal calorific power qF max. min.
VARINO GRANDE 350 - 600 80 70 60 T (°C) 50 40 30 60 / 80° 20 30 / 40° 10 30/40°, DIN4702-8 0 0 20 40 60 80 100 qF (%) Flue gas temperature-diagram of a VARINO GRANDE as function of the load 4.5. 4.5.1.
VARINO GRANDE 350 - 600 5. Description of the boiler control panel The control panel of the VARINO GRANDE condensing unit consists of the two systems burner management and installation control. 5.1. Burner management: The functions of a traditional heating unit are integrated in the expanded functions of the burner manager. The burner manager is a micro-processor controlled electronics device which records and controls all data on the boiler/burner.
VARINO GRANDE 350 - 600 6. Installation guide 6.1. General comments relating to installation 6.1.1. Basic details The perfect operation of the condensing unit and the manufacturer’s warranty are only guaranteed if installation and operation take place in accordance with the instructions from the manufacturer and the condensing unit and burner are maintained on a regular basis.
VARINO GRANDE 350 - 600 6.4. Placement into the boiler room The condensing unit can be placed in position in various ways. The condensing unit is delivered on wooden pallets which are suitable for a fork lift truck, pallet roller or armoured rollers. In addition, the condensing unit is delivered with lifting eyes and the boiler can be placed by means of lifting gear. The components may only be assembled by trained personnel. 6.4.1.
VARINO GRANDE 350 - 600 6.5.2. Boiler base If the floor of the boiler room is moist or loose, a sufficiently high boiler base must be provided. Moisture does not go well with electrical equipment! Otherwise, no base is needed for the unit. 6.5.3. Boiler support It is possible to mount the boiler on vibration dampers (available as option) to reduce noise transmission caused by vibrations.
VARINO GRANDE 350 - 600 6.7. 6.7.1. Hydraulic connection General notice For the hydraulic connection of the heating system and water heaters– in particular with regards to technical safety devices such as safety valves, expansion tanks, etc. – refer to generally accepted engineering rules as well as locally applicable standards, specifications and regulations.
VARINO GRANDE 350 - 600 6.8. Gas connection This condensing boiler was set in the factory to operate using the gas specified on the gas setting label.
VARINO GRANDE 350 - 600 Observe the installation instructions supplied with the control panel! Important: Electrical connections, especially the connection to the mains, should only be made after all other assembly and installation work has been completed. Locally made installations (raceways, etc. ) must not be clamped to the boiler’s panel work! 6.9.2. General information Mains connection Single-phased alternating current 230 VAC +10%, 50 Hz +1% acc. EN50160.
VARINO GRANDE 350 - 600 6.9.3. Sensor assembly Junction boxes or sockets are to be avoided. Sensor and extra-low-voltage cables must be laid separately from 2 mains lines. Use own sensor cable with max. 100 m length, cable 2 x 1 mm not screened Cable length: Cable length: Cable length: up to up to up to 25 m 50 m 100 m cable cross section: cable cross section: cable cross section: 0.25 mm 2 0.5 mm 2 1.
VARINO GRANDE 350 - 600 6.10. Flue gas installation The pertinent rules of technology as well as the country-specific regulations and valid standards must be observed. 6.10.1. Requirements Waste gas installations must be corrosion-resistant, leak-tight in terms of gas and condensate and withstand the static and operating requirements. The flue mouth must ensure unhindered emergence of the waste gases (a flue cap is not recommended).
VARINO GRANDE 350 - 600 7. Operating conditions 7.1. Fuel This condensing boiler was set in the factory to operate using the gas specified on the gas setting label. IMPORTANT: Please refer to chapter 6.8 for use with any other type of gas. Important: The use of other gases such as for instance biogas is not permitted. 7.2. Combustion air The combustion air should not contain large amounts of dust. The blower intake opening is provided with a label referring to this requirement.
VARINO GRANDE 350 - 600 8. Commissioning the condensing unit The condensing unit may only be commissioned by a specialist trained on the product. In order to ensure successful commissioning of the unit, the following points must be guaranteed by the electrician. - - The unit is installed hydraulically, electrically, on the gas and waste gas side and is ready for commissioning.
VARINO GRANDE 350 - 600 9. Operation Read this section of the manual with great care and get an installer to explain the heat producing system in all its different aspects: regulation and control. 9.1. Explanation of the control unit RESET - Key Release key - fault PROG - Key Selector key - program ►> - Key Step key OK - Key Store key + - Key Increase parameter value - - Key Reduce parameter value Status display Pressing the "PROG" key changes the program level.
VARINO GRANDE 350 - 600 9.3. 6 Desired temperature reached, normal switch off performed via switching hysteresis. (Active with "fixed value" control, "analog desired value" control or with integrated heating controller). 8 No or too small gas pressure present, start process was cancelled; condensing unit checks in 5 min. intervals whether gas pressure is present. 9 Boiler switched off due to exceeding of the electronic temperature monitoring.
VARINO GRANDE 350 - 600 9.4. Information level st Entry by pressing the PROG key twice. The entry is confirmed by the point after the 1 figure flashing. The first figure shows the step number, the last two figures the current value. By pressing the ►> key, the individual steps can be read one after the other. Step no.
VARINO GRANDE 350 - 600 9.5. Explanations of the operating hours and pulse counter display Operating hours 9999 = 0-9,999 hours 999.9 = 10,000-99,999 hours display in steps of 10 99.99 = 100,000 - 279,000 hours display in steps of 100 Pulse counter 9999 = 0-9,999 pulses 999.9 = 10,000-99,999 pulses display in steps of 10 99.99 = 100,000 - 279,000 pulses display in steps of 100 The operating hours and start pulses are overwritten in the EPROM in a 24-hour cycle.
VARINO GRANDE 350 - 600 9.7.2. Starting sequence after power failure or after acknowledging error In contrast to the normal starting sequence, for safety reasons after a power failure or after acknowledgement of an error, the combustion chamber is ventilated with fresh air for 5 minutes and the oxygen sensor is subsequently recalibrated. The previously described sequence changes as follows: step a b c d e f g h i 9.8.
VARINO GRANDE 350 - 600 9.9. Help in the event of errors ATTENTION: Opening the casing and manipulating the electrical connections is EXTREMELY DANGEROUS! The mains fuse must be switched off before the front cover is removed. WARNING: Due to external connections on the boiler control panel, individual cables or components on the VARINO GRANDE condensing unit can still be live even when the mains fuse is switched off. 9.9.1.
VARINO GRANDE 350 - 600 "noO2" standard display Status display: Alternating display Meaning: Failure of the O2 control. Possible cause: O2 sensor defective - The condensing unit continues to run in emergency mode for max. 72 hours. After this time has expired, the unit shuts down. - The safety block can only be released after the cause has been eliminated. Further procedure: Inform the customer service and indicate the error code as well. 9.9.2.
VARINO GRANDE 350 - 600 10. Maintenance maintenance or cleaning work can be carried out on the boiler or burner by the operator. The following points must be observed for optimum operation: - The combustion chamber must be kept clean A fresh air supply must always be guaranteed The connection between the waste gas pipes of the condensing unit and the waste gas unit must be gas and condensate leak-tight. Periodical checks and maintenance operations - - - Check manometer with circulation pump off.
VARINO GRANDE 350 - 600 Annex 1: Error codes Error code Meaning 00 Ionisation error (igniter may be wet) 01 Short circuit 24 V circuit 02 No flame when igniting (repeated false starts) 03 Internal defect 04 Permanent locking after power failure with previous defect 05 Internal defect 06 Internal defect 07 Internal defect 08 Air pressure monitor does not close 11 Internal defect 12 STB (safety temperature limit device) has released 13 Internal defect 14 Internal defect 15 Intern
VARINO GRANDE 350 - 600 Annex 2 Data on products ≤ 400 kW Product reference Trade mark YGNIS Models Nominal power Prated kW 350 400 341 390 Useful heat production At nominal power and in 80°C / 60°C regime At 30% nominal power and in 30°C return temperature regime P4 kW 340,9 389,2 η4 (PCS) % 87,7 87,6 P1 kW 113,9 130,2 η1 (PCS) % 97,7 97,7 Auxiliary electricity consumption Under full load elmax kW 0,265 0,334 Under partial load elmin kW 0,119 0,137 In standby mode PS
