RMAS- RMA install - Portsdean Technical

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Installation ManualBOILER MAINTENANCE(carried out by qualified heating engineers)Every 12 months, or more frequently if the quality and consumption of waterdemand it, check the condition of the magnesium anode and replace it if signs ofwear are evident. To check the condition of the anode 3 (see fig.1), open valve 4on the top of the boiler, undoing the red knob in a clockwise direction. If waterseeps out of the valve this means the anode is worn and must be replaced. If onthe other hand there is no evidence of water leaking out, the anode can still beused. After carrying out the operation described here, remember to tighten thevalve once more.2Fig. 1134Fig. 2If the water pressure exceeds 6bar, fit a 2 lt expansion tank to the boiler, proceeding as follows (see fig.1)a. empty the water content of the boilerb. undo the 1 / 2” cap (1) on top of the boiler;c. fit the expansion tank 2;d. fill the boiler once more.LIMITERFlowswitchThe boiler is equipped with a variable flow limiter at the cold water inlet. Theflow limiter can be adjusted by turning the screw (see fig.3 pos.C) in order toobtain the correct flow rate of domestic hot water for the specific boileroutput.FLOWSWITCHFig. 3BCAThis device gives precedence to domestic hot water and is fitted to boilerswhich supply instantaneous hot water (see fig. 2, item B fig. 3). It allowsconversion to hot water even with a minimum hot water demand (2litres/min.), using an electromagnetic principle with electrical switching bymeans of a relay. The device is made of non-toxic, corrosion-proof ZYTEL101 L plastic material which has type approval with non-toxic characteristicsand is unaffected by hard water. In addition, a filter is fitted before theflowswitch and at the cold water inlet which eliminates any water impurities.These features guarantee that the flowswitch operation is highly efficient.ABCBY-PASSAll boilers are fitted with a by-pass. This element is essential in the followingcases:# if a two-way zone valve is <strong>install</strong>ed# if thermostat valves are <strong>install</strong>ed in the radiators.To adjust the by-pass proceed as follows (see fig. 3 pos.A): fit the screwdriverto the plastic screw of the by-pass, bearing in mind that when the slot of thescrew is horizontal the by-pass is totally open, allowing all the water to pass,while when it is vertical the by-pass is totally closed. For partial by-pass flows,use the adjuster screw.Fig. 4D.H.W. CIRCULATING LOOPIt is possible to make a d.h.w. circulating loop. Please proceed as follows:unscrew CAP A on the cylinder top,, insert a stainless steel PIPE B (suppliedby the manufacturer with a kit) into the ½” union and connect here thecirculating loop pipe C. If necessary, fit an expansion vessel (as shown in fig.1)inserting a “T” connection between the circulating loop pipe and the cylinder ½”union.Wall Hung Boiler with D.H.W. Storage Cylinder Low Nox – Cod. 99881NA – July 200117
Installation Manual34222111830171618193233537112242112 1413 26 25 352811915272423363731202812915KEY1. FRAME2. FLUE HOOD – OPEN COMBUSTION CHAMBER3. FLUE HOOD – ROOM SEALED COMBUSTIONCHAMBER4. COMBUSTION CHAMBER5. ROOM SEALED CHAMBER COVER6. ROOM SEALED CHAMBER BACK7. HEAT EXCHANGER Mod. 20.0008. MULTIGAS BURNER WITH 24 RAMPS9. IGNITION ELECTRODE10. FLAME IONISATION ELECTRODE11. HEATING SAFETY THERMOSTAT12. ELECTRONIC GAS VALVE VK4105 A 100113. GAS PRESSURE MODULATOR14. ELECTRONIC IGNITION BOARD15. EXPANSION VESSEL16. 3-SPEED CIRCULATION PUMP WITH AIR VENT17. AUTOMATIC AIR VENT18. HEATING CIRCUIT 3 bar PRESSURE RELIEF VALVE19. DRAINING TAP20. WATER PRESSURE GAUGE21. WATER PRESSURE SWITCH22. HEATING SENSOR23. HOT WATER SENSOR24. 3-WAY DIVERTER VALVE25. FLOWSWITCH CONNECTION WITH FLOW LIMITER26. ELECTRONIC FLOWSWITCH27. 25 LITRE WATER STORAGE TANK28. ANODE CONTROL VALVE29. ANODE30. PLATE TYPE EXCHANGER31. BY-PASS32. AIR PRESSURE SWITCH33. FAN34. FLUE SAFETY THERMOSTAT35. FILLING TAP36. BOILER DRAING TAP37. 7 ATE PRESSURE RELIEF VALVE (HOT WATER)COMPONENTS INSIDE THE INSTRUMENT PANELMAIN PRINTED CIRCUIT BOARD (P.C.B.)TEMPERATURE INDICATOR P.C.B.8630171662712233637312021 12 14 132625 35Wall Hung Boiler with D.H.W. Storage Cylinder Low Nox – Cod. 99881NA – July 200118
Page 1: INSTALLATION, USE,AND MAINTENANCE M
Page 4 and 5: User ManualBOILER OPERATION AND ADJ
Page 6 and 7: Installation ManualTHE FRIENDLY POW
Page 8 and 9: Installation ManualTECHNICAL DATATy
Page 10 and 11: Installation Manual2dd2.5 m max.3%
Page 12 and 13: Installation ManualWhere installati
Page 14 and 15: Installation ManualGAS CONNECTIONST
Page 17 and 18: Installation ManualFilling the syst
Page 19 and 20: Installation ManualCONVERSION OFGAS
Page 21: Installation ManualTECHNICAL DATADI
Page 25 and 26: Installation ManualELECTRICAL CONNE
Page 27 and 28: Installation ManualELECTRICAL CONNE
Page 29 and 30: Installation ManualMAINTENANCETo ke
Page 31 and 32: Installation ManualSPARE PARTS SHOR

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