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MHS Boilers STRATA1 45, Instructions For Installation, Servicing & Operation

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MHS Boilers STRATA1 45 Instructions For Installation, Servicing & Operation Download Page 3

3

1.0  general

notes

STRATA1 

These instructions are intended to assist the installer, commissioning engineer, maintenance engineer

and user with the installation, maintenance and usage of Strata 1, 45, 60 and 75 models gas fired 
condensing boilers.

Please read this manual fully before commencing the installation of the appliance.  The Strata 1 must

only be installed by persons deemed to be competent i.e. Corgi Registered.  This manual must be handed
to the appliance user following completion of the installation.

conformity statement

Strata 1 45, 60, & 75 boilers are manufactured to the highest standard of quality, performance and

safety, in accordance with EC standards. Strata 1 45, 60 & 75 boilers carry the CE mark.

installation requirements

The installation of Strata 1 45, 60 & 75 boilers must be in accordance with the relevant requirements

of Gas Safety (Installation and Use) Regulations 1994, Health & Safety at Work Act, Building Regulations,
I.E.E. Regulations, Construction (Design & Management) Regulations 1994, Local Authority Bye-Laws,
Local and National Water Bye-Laws, Fire Authority Regulations and Insurance Company requirements.

The following Codes of Practice are also applicable:-

•

BS6798: 1987 Specification for installation of gas fired hot water boilers of rated input not 
exceeding 60kW.

•

BS6880 Code of Practice for low temperature, hot water heating systems of output greater than
45kW. Parts 1, 2 and 3: 1988.

•

CP342 Part 2: 1974 Code of Practice for centralised hot water supply.

•

BS5440-1:2000 1991 Specification for gas fired hot water boilers of rated inputs between 60kW 
and 2MW.

•

IGE/UP/2 Gas installation pipework, boosters and compressors on industrial and 
commercial premises.

•

CIBSE Guide Reference sections B7, B11 and B13.

•

BS5440-1:2000 - Installation of flues and ventilation for gas appliances of rated input not exceeding
70kW nett (1st, 2nd and 3rd family gases). Part 1: Specification for the installation of flues.

•

BS5440-2: 2000 Installation and maintenance of flues and ventilation for gas appliances of rated input
not exceeding 70kW nett (1st, 2nd and 3rd family gases) Part 2: Specification for installation and
maintenance of ventilation for gas appliances.

•

IGE/UP/10 Installation of gas appliances in industrial and commercial premises.

Summary of Contents for STRATA1 45

Page 1: ...WALL MOUNTED GAS FIRED ULTRA HIGH EFFICIENCY CONDENSING BOILER INSTRUCTIONS FOR INSTALLATION SERVICING OPERATION FOR MODELS 45 60 75 STRATA L 102...

Page 2: ...sion of Strainers 17 4 Low Water Pressure Protection 17 5 Care With The Use of Soldering Flux 18 0 Electrical Connections 35 43 18 0 Electrical Connections contd 44 45 18 1 Optional Matched controls 4...

Page 3: ...Bye Laws Local and National Water Bye Laws Fire Authority Regulations and Insurance Company requirements The following Codes of Practice are also applicable BS6798 1987 Specification for installation...

Page 4: ...e boiler utilises 100 pre mix gas air fed at positive pressure to the metal fibre sheathed radiant burners The combustion system incorporates internal flue gas re circulation and this combined with th...

Page 5: ...lity of the calorifier 12 Facility to connect optional matched control components which allow the boiler to control a heating circuit pump PR01 HWS primary pump or diverter valve and an underfloor cir...

Page 6: ...60 64 100 3 0 0 5 85 230 3 0 115 6 60 20 60 57 54 7 59 9 5 9 2 33 18 60 81 100 3 0 0 5 85 230 3 0 115 7 66 20 75 72 69 1 75 6 7 6 2 95 18 60 104 100 3 0 0 5 85 230 3 0 115 8 73 20 38 108 229 458 55 2...

Page 7: ...boiler slacken the screw in the underside of the casing unlatch left and right hand catches on underside of case pull casing slightly to the front and lift upwards to disengage casing hooks from rear...

Page 8: ...the top if necessary block or shim behind the bottom rear of the boiler to achieve a vertical installation 8 0 gas connection The gas connection is located at the base of the appliance rear r h side s...

Page 9: ...SP Tees see fig 4 item B which may be used to connect the supplied safety valve into the flow pipe adjacent to the appliance and either a system filling point expansion vessel or a draincock The flow...

Page 10: ...lly with the 80mm flue gas connection centrally within the 125mm air inlet connection There are two options for flueing the Strata 1 boiler i Conventionally using flue gas tube only and air for combus...

Page 11: ...cause a visual nuisance Flue components available from MHS Boilers Ltd 80 mm PPS Flue Tube x 1000 mm long effective length 945 mm 80 mm PPS Flue Bend x 90 80 mm PPS Flue Bend x 45 80 mm Wall Fixing B...

Page 12: ...ter air tube has EPDM rubber seal rings located in the socket component To aid assembly and assurance that the joints have been fully pushed home the seal rings and make ends of tubes fittings should...

Page 13: ...xing Bracket 80 125 Concentric Tube x 1000mm 80 125 Concentric bend x 93 491 80 125 concentric roof terminal accessories 80 125 Concentric Roof Terminal Assembly 80 125 1170 513 513 130 390 5 0 0 500...

Page 14: ...of 80 125 concentric tube will be required to extend the standard wall terminal A fall of 3 is required along the length of the flue towards the appliance Concentric Wall Terminals 945 610 850 845 Sta...

Page 15: ...e cut flush with each other square and any burrs removed Where TL required is greater than 845 mm then additional lengths as appropriate of 80 125 concentric tube will be required to extend the standa...

Page 16: ...icate male ends of concentric flue tube and female sockets of flue bend lightly with silicone grease Insert concentric tubes into bend and gently push fully home Ensure plain section of external part...

Page 17: ...m 850mm then additional lengths as appropriate of 80 125 Concentric tube will be required to extend the vertical discharge wall terminal A fall of 3 is required along the length of the flue towards th...

Page 18: ...push fully home Ensure flue gas discharge is positioned vertically upwards 5 Made good internally and externally gap between air tube and prepared hole through wall 6 Fit external 2 piece wall bezel a...

Page 19: ...100 Pa therefore no alternative design required and no effect on boiler output example 3 A Strata 1 75 boiler is installed non room sealed with a proposed flue using DN 80 PPS single skin flue compone...

Page 20: ...ntric Roof Terminal Without Rain Cap 7 5 11 0 16 0 80 125 Concentric Roof Terminal With Rain Cap 11 25 16 5 24 0 1m length 80 125 Concentric Tube 5 5 8 5 12 0 93 80 125 Concentric Bend 5 5 8 5 12 0 45...

Page 21: ...e facing the terminal 2000 mm 2000 mm I From a terminal facing the terminal 2000 mm 2000 mm J From an opening in the car port e g door window into dwelling 1200 mm 1200 mm K Vertically from a terminal...

Page 22: ...tilation for general cooling BS6644 specifies room temperature limits Table 4 Compartment Installation Non room sealed flue Natural Ventilation Direct to outside air Boiler Model Ventilation Openings...

Page 23: ...Room or Space Where multiple Strata 1 boilers are installed in the same room or space then the aggregate of the appliance inputs must be taken to determine from the following data the amount of venti...

Page 24: ...ltiple units and single units which require additional pumps must always be installed with a low loss mixing header or similar arrangement see table below The Strata 1 boiler has in built domestic hot...

Page 25: ...ere system index resistance pump residual head see page 24 Flow temperature may be Fixed constant or weather variable OS Outside air temperature sensor used where direct on boiler weather compensated...

Page 26: ...series with a cylinder thermostat T Allows for timed HWS Divertor valve will require SPDT relay if not spring return Divertor valve must be so installed as to spring return to heating PS Low water pre...

Page 27: ...ump regulation module from MHS Boilers Allows heating pump to be driven from boiler providing for auto operation frost protection running summer standstill exercising Must be used where RE2132 modulat...

Page 28: ...ump to be driven from boiler providing for auto operation frost protection running summer standstill exercising Must be used where RE2132 modulating room unit is installed Max pump motor load 2A Diver...

Page 29: ...h in series with a cylinder thermostat T Allows for timed HWS PRO1 Pump regulation module from MHS Boilers Allows heating pump to be driven from boiler providing for auto operation frost protection ru...

Page 30: ...temperature controls e g RE2132 modulating room unit from MHS Boilers or separate time clock room thermostat FS Flow temperature sensor RS Return temperature sensor S Hot water temperature sensor or t...

Page 31: ...cludes ratio setter for compensation of under floor coils Max pump motor loads 2A RC1 RE2132 modulating room unit from MHS Boilers provides Time Temperature control for radiator heating zone RC2 As RC...

Page 32: ...e with BS 6644 automatic pressurisation unit must be installed when the boiler input is greater than 60kW See item 17 1 Typical Single Strata 1 boiler installation serving heating and domestic hotwate...

Page 33: ...sure Zone RPZ Valve Incorporating a Type BA air gap Tundish Control Valve Further more in accordance with BS6644 for boiler s with an input greater than 60kW an automatic pressurisation unit must be i...

Page 34: ...lowed with regards to use in conjunction with stainless steel L1 N PE L1 N PE L2 L1 N PE A1 A2 R2 R3 R1 L1 N PE 1 2 Cable entry glands 1 4 3 2 6 5 Position of Weiland Plugs Weiland Plug Nr 1 Weiland P...

Page 35: ...er 2 Upper Burner Heat Exchanger Gas Valves 1 left Gas Valves 2 right Sensors HWS Flow 2 X10 X12 X14 X45 X44 X15 K5 K5 K6 K6 K7 K7 K2 K3 K8 K0 K4 K0 K8 K6 K0 K7 K14 K3 K9 K13 K2 X17 X16 STBW STBW STBA...

Page 36: ...ther compensated flow temperature are required Weiland plug Nr2 not shown Used only on LPG installations where an additional remote gas safety shut off valve is req d Install only one method of extern...

Page 37: ...o outside sensor RE2132 modulating room unit installed Weiland Plugs Sockets Controls Sockets on Control panel X3 X16 1 3 4 5 6 Boiler Dip Switch Settings Install only if direct on boiler weather comp...

Page 38: ...lled No outside sensor RE2132 modulating room unit installed Boiler Dip Switch Settings Weiland Plugs Sockets Controls Sockets on Control panel X3 X16 1 3 4 5 6 Install only if direct on boiler weathe...

Page 39: ...gas safety shut off valve is req d Install only one method of external time and room temperature control If room stat and time switch are required then do not install RE2132 room unit and vice versa...

Page 40: ...o outside sensor RE2132 modulating room unit installed Boiler Dip Switch Settings Install only if direct on boiler weather compensated flow temperature are required Weiland plug Nr2 notshown Used only...

Page 41: ...L1 PE N R2 R3 L1 PE N R2 R3 Supply 230V Boiler No1 Boiler No2 Boiler No3 HWS Primary Pump 230V 2A max If Required Heating Circuit Pump 230V 2A Max RE2132 Modulating Room Unit QAW44 Optional Remote Se...

Page 42: ...shown Used only on LPG installations where an additional remote gas safety shut off valve is req d 2 Install only one method of HWS temperature control The use of an HWS Sensor will allow no time cont...

Page 43: ...al Programmer Weiland Plugs Sockets Controls Sockets on Control panel X3 X16 1 3 4 5 6 Boiler Dip Switch Settings Weiland plug Nr2 notshown Used only on LPG installations where an additional remote ga...

Page 44: ...valve 240v for use with underfloor coils where the maximum flow temperature 55 C Circuit 2 A pumped heating circuit eg radiators where the flow temperature is direct on boiler weather compensated vari...

Page 45: ...KM2 s may be slaved to the first control with slave capacity of four boilers per each additional sequencer Standard features include pump overrun and boiler load rotation 18 1 optional matched control...

Page 46: ...anel X9 Socket 1 2 X9 Alarm Plug Lead Assembly Remote Alarm Circuit 19 0 commissioning the strata 1 boiler The Strata 1 boiler should be expertly commissioned by a competent engineer who will need in...

Page 47: ...de of the control panel See Dip switch setting table in 19 1 1 Dip Switches 19 3 first firing Notes The Strata 1 boiler has 2Nr Heat Exchange and Burner Assemblies The Lower Assembly is referred to as...

Page 48: ...trol or 0 10 volt control via adaptor ON PWM cascade KKM2 ON No external controls fitted On Off controls fitted Cascade controls for multiple boilers ON Outside Air Sensor Fitted OFF Radiator Circuit...

Page 49: ...each gas valve by half turn until burners ignite f Observe the colour of both burner flames correct colour should be dull red Adjust colour of burner flames using Qmin 2 until flame colours are corre...

Page 50: ...ent of the compensation slopes 19 3 First Firing contd 19 4 setting weather compensation NOTE Test period expires after 10 minutes if this expires whilst commissioning is still in progress press Engin...

Page 51: ...25 0 Default Compensation Slope Max Flow Temperature Boiler Flow Temperature C Outside Air Temperature C Range of Parallel Displacement of Slope A Boiler Flow Temperature C Outside Air Temperature C D...

Page 52: ...10 20 20 10 10 20 90 BLUE RED 80 70 60 50 40 30 20 10 20 20 20 20 20 15 10 5 1 5 10 15 20 25 0 1 2 K K BLUE RED 20 10 10 20 20 10 10 20 Range of Parallel Displacement of Slope B Boiler Flow Temperatu...

Page 53: ...trol panel and has a number of functions a Setting maximum output to heating The output to heating may be limited if required and may be set between 20 and 100 by performing the following i Press red...

Page 54: ...ly being applied to the boiler a message to the user is shown on the screen displaying service reminding the user that the appliance should now be serviced Following a service visit by the specialist...

Page 55: ...ssages starts and successful restarts Special communication lead and service software required g Run the unit at maximum capacity and measure the input and the CO2 h Run the unit at minimum capacity a...

Page 56: ...nd do have characteristic yet yet noise which is normal at low speeds at j NEVER CLEAN THE BURNER ITSELF If the interior of the heat exchanger is contaminated and or there is a deposit on the surfaces...

Page 57: ...it F R The flow and or return temperature is too high currently Fan 1 high The lower burner fan is running too fast currently Fan 1 low The lower burner fan is running too slow currently Fault room u...

Page 58: ...high 9 11 29 31 33 Fan 1 low Lower burner fan speed during pre purge is too low 9 10 11 14 18 29 31 33 Fan 1 oper Lower burner fan is detected as 3 4 11 29 31 operating when should be idle Ignit 1 fa...

Page 59: ...29 31 34 button Eeprom There is a fault in the EEPROM 29 in the control 22 1 screen display diagnosis of faults contd 22 2 possible causes of fault corrective action CAUSE REASON ACTION No 1 Dip switc...

Page 60: ...air supply tubes or flue blocked Check flue for suitability or clear obstruction 23 Leakage of flue gas from flue gas tube into air tube vitiating the combustion air Strip out flue system and remake j...

Page 61: ...Switch on the on off switch on the appliance control panel 4 If all controls connected to the boiler are calling for heat the screen will display Heat Operat or Tap Operat 5 If all controls are in the...

Page 62: ...62 STRATA1 24 0 Strata 1 45 60 75 exploded view...

Page 63: ...Fax 01268 728202 www mhsboilers com This publication is issued subject to alteration or withdrawal without notice The illustrations and specifications are not binding in detail All offers and sales a...

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