Strebel Mital, User Manual

Page 1: ... 1 0099 STREBEL MITAL STREBEL MONTREUX Fan Assisted Wall Mounted Gas Combination System Boilers USER INSTALLATION COMMISSIONING MAINTENANCE INSTRUCTIONS APR 01 ...

Page 2: ...imensions Clearances Figure 14 Montreux Internal Wiring Diagram Figure 2 Air Vent Positions Figure 15 Mital plus Internal Wiring Diagram Figure 3 Flue Terminal Position Figure 16 Montreux plus max Internal Wiring Figure 4 Boiler Manifold Fixing Points Diagrams Figure 5 Manifold Assembly Figure 17 Mital max Internal Wiring Diagrams Figure 6 Flue Adapters Figure 18 Honeywell V4600 Gas Valve Figure 7...

Page 3: ...c bags polystyrene wood clips nails etc can be harmful to children and must be disposed of immediately and correctly To avoid damage caused by low temperatures it is recommended that the boiler should be drained down if left unused for a long period Neither the supplier or manufacturer is responsible for faults break downs water leakage or any consequential damage caused by low temperature To comp...

Page 4: ...8 13 2 26 4 13 2 26 4 17 4 34 8 Output kW 11 6 23 2 11 6 23 2 15 6 31 3 11 6 23 2 11 6 23 2 15 6 31 3 DHW Flow Rate at 25 C t Lt min 13 3 13 3 17 9 Flue Size mm 60 100 100 60 100 100 Electrical Supply 230 volts 50 Hz Single Phase Heating Circuit Pressure Bar max min 3 0 5 3 0 5 3 0 5 3 0 5 3 0 5 3 0 5 DHW Circuit Pressure Bar max min 6 0 4 6 0 4 6 0 4 Dimensions mm Height Width Depth 850 450 350 8...

Page 5: ...SION plus max plus max A Width of Unit 450 450 600 450 450 600 B Inside of fixing point 75 75 75 75 75 75 C Centre of DHW connection 55 55 55 55 55 55 D Depth of Unit 350 350 350 350 350 350 E Centre of combustion air inlet 155 200 155 200 F Centre Exhaust outlet 195 195 185 195 195 185 G Centre Exhaust outlet 265 265 310 265 265 310 H Height of Unit 850 850 850 850 850 850 Flue connection 60 100 ...

Page 6: ...n of vents Air from Room Air from Outside Mital Montreux 100 cm High Low 201 cm 402 cm 100 cm 201 cm Mital plus Montreux plus None Required High Low 201 cm 201 cm 100 cm 100 cm Mital max Montreux max None Required High Low 285 cm 285 cm 142 cm 142 cm Figure 2 Air Vent Positions Boiler type Boiler location In a Room In a compartment Vented to a Room In a compartment Vented to Outside Mital Montreux...

Page 7: ... a window or door on the same wall 300 F Horizontal from an air vent on the same wall 300 G From vertical drain pipes and soil pipes 75 H From external corners 300 I From internal corners 300 J Below eaves 200 L Above ground roof or balcony level 300 M Vertical from a terminal on the same wall 1500 N Horizontal from a terminal on the same wall 300 O From a surface facing a terminal 600 P From a te...

Page 8: ...solating valve to the angled pipe with suitable jointing for the sanitary connection on the Mital and Mital plus boilers a straight connector is provided The boiler pipe can then be connected to the isolation valve and the straight connector made on to the bottom of 90 bend using the fibre washers provided Figure 5 Manifold Assembly 8 0 Flue Assembly Mital Montreux The standard flue assembly kit c...

Page 9: ...al fitted For a twin pipe system the maximum equivalent flue pipe for the intake and exhaust with a 90º bend and the standard terminal is 3 5 meters for each In all cases additional 90º bends are equivalent to 1 metre and must be deducted from the maximum flue length allowed Figure 9 Boiler Flue Gate NOTE The flues must be installed with a 3º drop from the boiler to ensure any condense or rain wat...

Page 10: ... Test all connections disturbed for leaks 10 Adjust high low gas pressures as per commissioning instructions and figure 20 21 22 11 Re seal test points and check for leaks 11 0 Cold Water Supply Mital Mital plus Mital max only A minimum pressure of 0 4 bar is required at the appliance to enable the boiler to function However a greater pressure is required if the stipulated flow rate is to be achie...

Page 11: ...Figure 12b Mital max boiler Resistance Pump diagram 0 0 1 0 2 0 3 0 4 0 5 0 6 0 200 400 600 800 1000 1200 1400 1600 1800 2000 Ltr hr Bar Pump Duty Boiler Resistance 2 1 3 Figure 12c Montreux Montreux plus boiler Resistance Pump diagram 0 0 1 0 2 0 3 0 4 0 5 0 6 0 200 400 600 800 1000 1200 1400 1600 1800 Ltr hr Bar Pump Duty Boiler Resistance 2 1 3 Figure 12d Montreux max boiler Resistance Pump dia...

Page 12: ...f the internal wiring are provided in figures13 14 15 16 17 on the following page 13 2 External Controls For external controls reference should be made to both the relevant control manufacturers Instructions and the boiler wiring diagrams shown in figures 13 14 15 16 17 If the integral programmer is to be utilised the following sequence should be followed Pull forward the front control panel cover...

Page 13: ...witch Hot Water Priority Switch MN MO MR MV OP PC PF PW N A Permanent Live for Time Clock Terminal Strip Fan Motor Heating Timer Connections Pump Air Pressure Switch Water Pressure Switch R S1 S2 SL SW T1 T2 TA N A Hot Water Control Thermostat Stage 2 Hot Water Control Thermostat Stage 1 Power On indication Summer Winter Switch Boiler Control Thermostat Stage 2 Boiler Control Thermostat Stage 1 Ro...

Page 14: ... PW R S1 Hot Water Priority Switch N A Permanent Live for Time Clock Terminal Strip Fan Motor N A Heating Timer Connections Lock Out Reset Button Pump Air Pressure Switch Water Pressure Switch N A Hot Water Control Thermostat Stage 2 S2 SA SB SF SL SW T1 T2 TA TIS VZ Hot Water Control Thermostat Stage 1 Low Water Pressure Warning Light Lock Out Warning Light Flue Warning Light Power On indication ...

Page 15: ... A IG MN MO MR MV MX OP PB PC PF PW R Boiler On Off Switch N A Permanent Live for Time Clock Terminal Strip Fan Motor N A Heating Timer Connections Lock Out Reset Button Pump Air Pressure Switch Water Pressure Switch N A SA SB SF SL SW T1 T2 TA TIS VZ Low Water Pressure Warning Light Lock Out Warning Light Flue Warning Light Power On indication Summer Winter Switch Boiler Control Thermostat Stage ...

Page 16: ...ot Water Priority Switch Permanent Live for Time Clock Terminal Strip Fan Motor Heating Timer Connections Lock Out Reset Button Pump Air Pressure Switch Water Pressure Switch 4 Contact Relay 1 Contact Relay S1 S2 SA SB SF SL SW T1 T2 TA TIS TL Hot Water Control Thermostat Stage 2 Hot Water Control Thermostat Stage 1 Low Water Pressure Warning Light Lock Out Warning Light Flue Warning Light Power O...

Page 17: ...e burner connect a pressure gauge to the burner pressure test point 11 Figure 18 after having slackened the internal screw by a few turns and remove yellow plastic cap 5 Figure 18 Honeywell V4600 Gas Valve KEY 1 Thermocouple connection 2 Gas valve inlet 3 Gas inlet pressure test point 4 Gas valve control knob 5 Adjustment screw cover 6 High gas pressure adjustment nut 7 Low gas pressure adjustment...

Page 18: ...the modulating solenoid and check the High and Low fire pressure values readjust if required and then re fit clear plastic cap C Figure 20 SIT 836 Nova Gas Valve High and Low Gas Pressure Adjustment Mital Mital plus Mital max the hot water flow rate MUST be adjusted The integral flow regulator see figure 10 is not a pressure reducer therefore high pressure above 6 bar on the Mains water system has...

Page 19: ...lockage Inspect the burner gas ways for damage or blockage Vacuum or blow out any lint or dirt 3 Clean Flueways Cover the controls and burner injectors with a waterproof sheet Remove flue hood by removing the three fixing screws and disconnecting the electrical wires for the fan Remove all loose deposits from the heat exchanger particularly between the fins working from above and below the heat ex...

Page 20: ...d air lock system too small Radiators cold boiler kettling pump speed too low system incorrectly balanced air in system Boiler locks out locks out after a few seconds ionisation probe misalign ionisation probe wire disconnected or broken poor electrical earth phase and neutral swapped Ignition card faulty power supply out of phase boiler sparks but fails to light gas supply turned off ignition pro...

Page 21: ...locked out after 20 seconds press red reset button if boiler locks out again professional advice should be sought When lit the system has low pressure system needs to be recharged to 1 bar when cold and system checked for leaks If this remains lit after 10 minutes a problem exists on the flue Switch OFF the boiler and contact a qualified gas service engineer Figure 23 Mital plus Mital max Montreux...

Page 22: ...lue Washer set 1x Inner rubber wall seal Additional 1 metre flue extensions and bends can be supplied separately at extra cost Manifold and valve carton contains 1x Connection manifold 5x Angled pipe connectors 4x Isolation valve The company reserves the right to change the specification and dimensions without prior notice E O E STREBEL Ltd 1F Albany Park Industrial Estate Frimley Road Camberley S...