n° 51BL1802 Mod. ZF 420A ZF 520A EFFICIENCY RULES n° 51BL1801DR Mod. Z 420A Z 520A n° 51BL1803DR Mod. ZF 420A ZF 520A HIGH EFFICIENCY n° 51BL1800 Mod. Z 420A Z 520A WALL-MOUNTED COMBINATION BOILERS CE EXAMINATION CERTIFICATES SERIES Mod. Z 420A – Z 520A – ZF 420A – ZF 520A INSTRUCTIONS FOR: USE AND MAINTENANCE. INSTALLATION. TO OBTAIN THE BEST PERFORMANCE FROM THE BOILER, PLEASE READ THESE INSTRUCTIONS CAREFULLY.
Rev.0 USER INSTRUCTIONS - Control panel, mod. Zoom Z 420A – Z 520A – ZF 420A – ZF 520A Page 3 - Turning the boiler on and off mod.
Rev.0 USER INSTRUCTIONS You have placed your trust in a firm specialised in heating and producing hot water for domestic use. This boiler has been designed to respond to European standards. It has been manufactured with utmost care, conforming to current safety standards. Each appliance has been tested when working, and the inspector who carried out the tests has signed the warranty certificate enclosed with the appliance documents.
Rev.1 STARTING UP THE BOILER IGNITION OF THE MAIN BURNER (Fig. 1) - Check that the water pressure to the system is 1 bar (pressure gauge F, Fig. 1). If the pressure is below 0.5 bar, fill the boiler again (Fig.23/B). - If the gas tap is installed, check it is open. - Turn off the electric bipolar supply switch to the boiler, which is fitted on the outside of the appliance. - Turn knob A to position I. - The boiler is now ready to work normally.
Rev.0 USEFUL SUGGESTIONS FOR USING THE BOILER Central heating If a room thermostat has not been installed - Set the boiler temperature on the basis of the room temperature. If a room thermostat has been installed - Set the boiler temperature (knob B, Fig. 1) between 50 - 80 °C - Turn the room thermostat to the desired temperature Water pressure in the system (see F Fig.1) - Pressure, when cold, must not go below 0,7 bar. - Pressure, when hot, must be not exceed 2 bar.
Rev.0 VENTILATION OF THE ROOMS VENTILATION OF THE ROOM IS COMPULSORY AND INDISPENSABLE FOR THE FOR SERIES “Zoom” Z 420A Z 520A (Class B11BS appliances) “Zoom” ZF 420A ZF 520A (Class B22 appliances) for installation see Page 14,15. These boilers must be installed in suitable surroundings, which guarantee the correct level of air intake for combustion; they must be connected to a flue gas evacuation circuit (flue pipe). Adhere to local legislation regarding the ventilation required for the room.
Rev.0 WORKING PROBLEMS (For tests to be carried out inside the boiler contact the Authorised Service Centre). THE BOILER DOES NOT WORK AND THE PILOT LIGHT "D", FIG. 2, IS TURNED OFF Fault with the supply wire; contact the Authorised Service Centre. If the supply wire is damaged, it must be replaced with a special wire that can be supplied by from the Manufacturer or by an Authorised Service Centre. THE BOILER WORKS INTERMITTENTLY AND THE PILOT LIGHT "D" FIG.
INSTALLATION Rev.1 INSTRUCTIONS IMPORTANT: The packing elements (foamed polystyrene, plastic bags) must be kept out of the reach of children, as they are a potential source of danger. This boiler has been designed to respond to European standards. It has been manufactured with greatest care, in compliance with safety regulations. Each appliance has been tested when working, and the inspector who carried out the tests has signed the warranty certificate enclosed with the appliance documents.
Rev.0 INSTALLATION REGULATIONS - Installation must by carried out by a qualified technician in conformity with current legislation, local standards and with all due dilegence. - The boiler must not be installed in rooms used for storing inflammable substances (paper, rags, solvents, polystyrene, plastic, etc.). - Do not install the boiler in spaces where it is exposed to direct contact with cooking steam, in damp spaces, in rooms subject to chemical vapours, such as laundries, hairdressers, etc.
Rev.0 DIMENSIONS Mod. Zoom Width Height fittings centre distance Depth Stack Ø Distance between stack axis-wall Connection centre distance Distance between gas fittings /wall centre line H Distance between water fittings / wall centre line A B C D E F G Z 420A ZF 420A Z 520A ZF 520A in. - mm in. - mm in. - mm in.- mm in. - mm in. - mm in – mm 16.73 - 425 26.50 - 673 11.42 - 290 5.12 - 130 6.77 - 172 14.60 - 371 4.80 - 122 16.73 - 425 26.50 - 673 11.42 - 290 3.94 - 100 7.91 - 201 14.60 - 371 4.
FORCED DRAUGHT BOILERS (Mod. Zoom ZF 420A - ZF 520A) Boilers for C12 - C32 – C42 - C52 type configuration taking the air directly from the outside. For C42 configuration, refer to EN 483 standards, Chapter 8.2.1.4. paragraph "I". ATTENTION: Ventilation of the room in accordance with current laws. Boiler with coaxial flue pipe Boiler with separate flue pipes Wall ZF 420A ZF 420A Wall ZF 520A ZF 520A Fig.
Rev.1 AIR SUCTION / FLUE DISCHARGE CONNECTION SYSTEMS SUCTION AND DISCHARGE COAXIAL SYSTEM If horizontal coaxial pipes are chosen, the boiler must be fitted with a coaxial curved connector (1) Fig. 9, with vertical coaxial pipes, must be fitted Fig. 9 connector (2).
Rev.1 CONNECTION EXAMPLES FOR COAXIAL PIPES FOR TYPE "C" BOILERS (with pipes ∅60/100 mm) This solution allows a max. length of the flue pipes of 3 metres for the horizontal pipe and 4 metres for the vertical pipe. Each extra 90° connector that is fitted reduces by 1 metre the max. extension of the piping. Fig.12 C 12 Horizontal outlet with elbow connector and extension pipe Fig.13 C 12 Horizontal outlet with straight connection and extension pipe Fig.
Rev.4 CONNECTION EXAMPLES OF SEPARATE PIPES FOR TYPE "C" BOILERS (with piping of ∅80 mm) This solution allows a max. length of the flue expulsion pipes plus air suction of 30 metres. The air suction pipe however, must not exceed 10 metres in length. In case of distances exceeding 10 metres (20 metres for the pipe ∅100mm) remove the drawing on the intake hole of the comburent air (Fig.11 Ref. 5). Fig.16 C 32 Vertical outlet with elbow connector and extension pipes Fig.
Rev.2 MAXIMUM LENGTHS ALLOWED FOR THE PIPING WITH "COAXIAL" AIR INTAKE EXHAUST FUME SYSTEMS C12 C32 C42 The maximum length of the piping for the straight coaxial pipe is 3 metres for the horizontal pipe and 4 metres for the vertical version. With length less than 0.7 metre., a diaphragm of ∅ 46 mm must be fitted into the opening of the ventilator, which is supplied by us (see Figs. 9-10-11 page 12.).
Rev.0 ROOM VENTILATION FOR NATURAL DRAUGHT BOILERS, TYPE “B11BS ” mod. Z 420A - Z 520A mod. ZF 420A ZF 520A (Class B22 appliances) for installation refer to pages 14,15. These boilers must be installed in suitable environments, which guarantee the right level of combustible air intake; they must be connected to a exhaust flue outlet pipe. For ventilation, refer to local legislation.
HEATING ALTERNATIVELY, A FUSED DOBLLE POLE PIPING SYSTEM Rev.0 - The section of the piping depends on the methods currently used, using the curve given in the diagram (Figs. 21-22). We recommend using a capacity that keeps the temperature difference between delivery and return from the heating system between 41°F and 50°F. Available head and capacities for heating systems at the boiler fittings Diagram of pressure drops of the sanitary water circuit to the boiler fittings Fig.21 Fig.
Rev.0 START UP WARNINGS BEFORE STARTING UP Important: Before filling the system, check that the pump is not blocked. - If the pump is blocked, remove the protective cap and use a screwdriver to rotate the pump rotor pin to the right and left (Fig. 23/A). - With the gas valve closed, check that the metre does not record the passage of gas for at least 10 minutes. - Check that all the bleed valves on the system are open. - Open the filling valve (Fig.
Rev.1 BLEEDING THE SYSTEM If the air has not been completely bled from the system, the boiler will not work correctly. When the boiler has been working in heating mode a few hours, bleed the system again as given on page 18. If necessary, the system can be topped up with water. PRECAUTIONS AGAINST FREEZING (house empty in the winter) For short periods (12 – 24 hours) - Turn the selector switch A to 'O'.
WARNING: Before making the connections it’s necessary to disconnect the power supply. CONNECTION TO THE REGULATION CIRCUIT “M2” WITH REMOTE CONTROL (OPTIONAL) Cod.20572 WARNING: Fig.26 In this type of connection, the connectors C-D must be linked to the regulation circuit M2 and the connector C1-D1 of the regulation circuit R2. Warning: Connect and disconnect the circuit “R1” only after having removed the existing electrical connection of the combi boiler.
Rev.2 INTERNAL WIRING DIAGRAM FOR NATURAL DRAUGHT AUTOMATIC IGNITION BOILERS, SERIES Zoom Z 420A – Z 520A Signals on the "P.C.B." card A. B. E. • • F. • G. • S.W.F.D. – Sanitary flow detector S.T.P. – Sanitary temperature probe H.T.P. – Heating temperature probe S.T. – Safety thermostat M.R.L.T. – Manual reset limit thermostat I.R.B. – Luminous reset button R.O.L. – Ready for operation light C.P.
Rev.2 INTERNAL WIRING DIAGRAM FOR FORCED DRAUGHT AUTOMATIC IGNITION BOILERS, SERIES Zoom ZF 420A – ZF 520A Signals on the "P.C.B." card A. B. E. • • F. • G. • S.W.F.D. – Sanitary flow detector S.T.P. – Sanitary temperature probe H.T.P. – Heating temperature probe S.T. – Safety thermostat F.S.P.S. – Fan safety pressure switch F. – Fan I.R.B. – Illuminated reset button R.O.L.
Rev.
02-05 Cod.01253 Authorized Servicing Centre Via Olanda, 1 – 37069 Villafranca di Verona (VR)– Italia – Tel – 045/8520650 – Fax – 045/8520761 www.sarigas.it E-Mail: sarigas@sarigas.
