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STRATA1

3 8 & 3 8 / 4 6 C O M B I

Index

page

section

. . . . . . . . . . .

1.0

General Notes

. . . . . . . . . . .

2.0

Product Description

. . . . . . . . . . .

2.0

Product Description (contd)

. . . . . . . . . . .

3.0

Technical Data & Dimensions

. . . . . . . . . . .

4.0

Delivery Consignment/Unpacking The Boiler

. . . . . . . . . . . .

5.0

Boiler Location

. . . . . . . . . . . .

6.0

Installation Clearances

. . . . . . . . . . .

7.0

Wall Mounting

. . . . . . . . . . . .

8.0

Gas Connection

. . . . . . . . . . .

9.0

Water Connections

. . . . . . . . . . .

10.0

Condense Waste Connection

. . . . . . . . .

10.0

Condense Waste Connection (contd)

. . . . . . . . . . .

11.0

Flue Combustion Air Connection - General

. . . . . . . . .

12.0

Conventional Flue Installation

12-18

. . . . . . .

13.0

Room Sealed Flue Installations

. . . . . . . . .

14.0

Examples of Calculating Flue Pressure Loss

. . . . . . . . .

14.1

Calculating Flue Resistance

. . . . . . . . . . .

15.0

Flue Terminal Positions

. . . . . . . . .

15.0

Flue Terminal Positions (contd)

22-23

. . . . . . .

16.0

Ventilation Requirements Single Appliances

24-33

. . . . . . .

17.0

Hydraulic System Design (circuit diagrams)

. . . . . . . . .

17.1

Filling The System

. . . . . . . . . . .

17.2

Water Treatment System Cleaning

. . . . . . . . .

17.3

Care With The Use of Soldering Flux

. . . . . .

17.4

Domestic Hot Water - Combi

. . . . . . . . . . .

17.5

Combi Boiler - Prevention of scale in

. . . . . . . . . . . . . .

water to water heat exchanger

35-36

. . . . . . .

17.6

Combi Boiler Hot Water

. . . . . . . . . . . . . .

System Pipework Pressure Drop

. . . . . . . . . . .

17.7

Combi Boiler - Domestic Hot Water

. . . . . . . . . . . . . .

System Design Considerations

36-48

. . . . . . .

18.0

Electrical Connections

. . . . . . . . .

19.0

Commissioning The Strata 1 Boiler

. . . . . . . . . . .

19.1

Pre-Commissioning Checks

. . . . . . . . . . .

19.2

LPG Conversion Procedure

. . . . . . . . .

19.3

Control Panel

51-52

. . . . . . .

19.4

First Firing

52-54

. . . . . . .

19.5

Setting The Control Panel

54-60

. . . . . . .

19.6

Installer Programming of Control Panel

. . . . . . . . .

19.7

Output For Charging Hot Water

. . . . . . . . . . .

20.0

Setting The Boiler To Work

. . . . . . . . . . .

21.0

Servicing Instruction

. . . . . . . . . . .

21.1

Inspection

61-62

. . . . . . .

21.1

Inspection (contd)

. . . . . . . . . . .

21.2

Maintenance

. . . . . . . . .

21.2

Maintenance (contd)

63-65

. . . . . . .

22.0

Screen Display/Diagnosis Of Faults

65-66

. . . . . . .

22.1

(Possible) Causes Of Fault & Corrective Action

. . . . . . . . .

23.0

Instructing The User

. . . . . . . . . . .

23.1

To Turn on the Appliance

. . . . . . . . . . .

23.2

To Turn off the Appliance

68-70

. . . . . . .

24.0

Parts List

Содержание STRATA1 38 COMBI

Страница 1: ...STRATA3 8 3 8 4 6 C O M B I WALL MOUNTED GAS FIRED ULTRA HIGH EFFICIENCY CONDENSING BOILERS INSTRUCTIONS FOR INSTALLATION SERVICING OPERATION OF THE MODEL 38 BOILER THE 38 46 COMBI L 101...

Страница 2: ...g The System 17 2 Water Treatment System Cleaning 34 17 3 Care With The Use of Soldering Flux 17 4 Domestic Hot Water Combi 17 5 Combi Boiler Prevention of scale in water to water heat exchanger 35 36...

Страница 3: ...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 C...

Страница 4: ...combined with the precise nature of pre mix fuel air control gives ultra low emissions to satisfy the most stringent emission regulations in the world currently That is 20mg kWh NOx 14 ppm DAF and 14...

Страница 5: ...ifier or the instantaneous demand combi boiler 12 Facility to connect optional matched control components which allow the boiler to control a heating circuit pump HWS primary pump or diverter valve an...

Страница 6: ...ing Output 50 30 C kW Min Working Pressure CH Bar Max Working Pressure CH Bar Max Flow Temperature CH C Total Primary Capacity Litre Available CH Pump Pressure at kPa 38kW 20 C t Input Range Domestic...

Страница 7: ...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 chassis and then remove casing to the front 5 0 boiler l...

Страница 8: ...the top if necessary adjust the positioning of the boiler using the adjustable wall bearing assemblies located at the bottom rear left and right hand of the appliance back panel 8 0 gas connection Th...

Страница 9: ...of the appliance see fig 5 The condense syphon cleaning point is factory fitted with a heavy grade black plastic cap which MUST NOT BE REMOVED see fig 5 apart from routine maintenance cleaning operat...

Страница 10: ...nally using flue gas tube only and air for combustion from the room or compartment in which the appliance is installed If using a conventional flue arrangement then the room or compartment must be ven...

Страница 11: ...scharge may 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 93 80 mm PPS Flue Bend x 45 80 mm Wa...

Страница 12: ...be have soft seal rings located in the socket components To aid assembly and assurance that the joints have been fully pushed home the seal rings and make ends of tubes fittings should be lightly lubr...

Страница 13: ...125 Wall Fixing 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...

Страница 14: ...then additional lengths as appropriate 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 detail...

Страница 15: ...t 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 standard w...

Страница 16: ...uilding from a correctly operating appliance the white vapour plume may cause in certain applications a visual nuisance It must also be considered that a flue termination will drip condense water and...

Страница 17: ...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 the appliance i...

Страница 18: ...ently 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 b...

Страница 19: ...n boiler is proposed to be installed with a room sealed concentric flue taking a part horizontal 6m and part vertical 10m route to a vertical concentric roof terminal set The flue system includes 3 Nr...

Страница 20: ...Length DN 100 PPS Flue Tube 93 DN 100 PPS Flue Bend Fluegas 45 DN 100 PPS Flue Bend Fluegas DN 80 Open Termination with Mesh DN 100 Open Termination with Mesh 80 125 Concentric to 2 x 80 Tubes Adaptor...

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

Страница 22: ...hould be given to providing ventilation for general cooling Table 4 Compartment Installation Non room sealed flue Natural Ventilation Direct to outside air Ventilation openings free area cm2 High Leve...

Страница 23: ...n the same room or space then the aggregate of the appliance inputs must be taken to determine from the following data the amount of ventilation required Appliance Gross Heat Inputs Should be taken as...

Страница 24: ...stem pumps which will be dictated by the system configuration and by the index resistance Multiple units and single units which require additional pumps must always be installed with a low loss mixing...

Страница 25: ...es are required C Room Controls either RE2132 modulating room unit from MHS Boilers or a room thermostat PS Low water pressure cut off switch system type 1 Typical single Strata 1 boiler installation...

Страница 26: ...an HWS temperature sensor from MHS Boilers or T a cylinder thermostat PS Low water pressure cut off switch Divertor valve must be so installed to spring return to heating Divertor valve will require S...

Страница 27: ...direct on boiler weather compensated flow temperatures are required C Room controls either RE2132 modulating room unit from MHS Boilers or a room thermostat PS Low water pressure cut off switch System...

Страница 28: ...mperature sensor from MHS Boilers or T a cylinder thermostat PS Low water pressure cut off switch Divertor valve must be so installed to spring return to heating Divertor valve will require SPDT relay...

Страница 29: ...controls either RE2132 modulating room unit from MHS Boilers or a room thermostat S T Hot water temperature controls either S an HWS sensor from MHS Boilers or T a cylinder thermostat PS Low water pr...

Страница 30: ...ys be weather compensated but may have differing compensation slopes 17 0 hydraulic system design contd OS Outside air temperature sensor Provides outside air temperature reference for both heating zo...

Страница 31: ...om unit from MHS Boilers or separate time clock room thermostat FS Flow temperature sensor RS Return temperature sensor S Hot water temperature sensor or thermostat KKM2 Modulating Kaskade Manager Up...

Страница 32: ...he Same Time Boiler s Flow Header AAV typical schematic arrangement where system has multiple pumps that will operate at the same time WC Wiring Centre Junction Box RS Room Thermostat CS Cylinder Ther...

Страница 33: ...hod of filling must comprise of the following components in the arrangement shown Control Valve Strainer Verifiable Backflow Device with Reduced Pressure Zone RPZ Valve Incorporating a Type BA air gap...

Страница 34: ...gement Important Note Cold water feed and hot water flow out connections must be reverse return as shown See also notes 1 and 2 above DOC Stop Valve Stop Valve DOC DOC CWM Strata 38 46 Strata 38 46 St...

Страница 35: ...ample A wash hand basin is to be served and the length of pipe involved is 20m The entire installation is in 15mm copper tube and reference to the graph right shows that the pressure drop when deliver...

Страница 36: ...X 42 Cylinder Thermostat or HWS Temperature Sensor Not Combi Low Voltage Connection Rail Outside Air Temperature RE 2132 Modulating Room Unit Has No Function Earth Connection Rail External Gas Safety...

Страница 37: ...Cold Water Inlet Temperature Sensor Combi only Instantaneous H W Flow Temperature Sensor Combi only KO White K2 Brown K3 Green K4 Gray K5 Orange K6 Blue K7 Red K8 Black Gas Valve X10 X12 X14 X13 K5 K...

Страница 38: ...then do not install also a room thermostat and vice versa RE2132 Modulating Room Unit Has No Function 5 1 3 4 2 OS Outside Air Sensor 2 3 4 R1 R2 R3 5 6 24V dc T T L1 N L1 N L2 L1 N 230V ac 50 Hz Ear...

Страница 39: ...Sensor 2 3 4 R1 R2 R3 5 6 24V dc T T 230V ac 50 Hz Earth Rail L1 Weiland Plug Socket PE N L1 N L1 N L2 L1 N Low Pressure Switch break on Pressure Fall Supply 230V 3A Divertor Valve Spring Return Type...

Страница 40: ...not install also a room thermostat and vice versa RE2132 Modulating Room Unit Has No Function Link 5 1 3 4 2 OS Outside Air Sensor 2 3 4 R1 R2 R3 5 6 24V dc T T 230V ac 50 Hz Earth Rail L1 Weiland Pl...

Страница 41: ...versa Install only one method of HWS temperature control not Combi The 3 way valve must be installed to spring return to open the heating circuit Low Pressure Switch break on Pressure Fall Supply 230...

Страница 42: ...all only one method of HWS temperature control RE2132 Modulating Room Unit Has No Function Link 5 1 3 4 2 OS Outside Air Sensor 2 3 4 R1 R2 R3 5 6 24V dc T T 230V ac 50 Hz Earth Rail L1 Weiland Plug S...

Страница 43: ...ating Room Unit Rad Zone RE2132 Modulating Room Unit U floor circuit Has No Function 5 1 3 4 2 OS Outside Air Sensor 2 3 4 R1 R2 R3 5 6 24V dc T T 4 3 2 5 1 230V ac 50 Hz Earth Rail L1 Weiland Plug So...

Страница 44: ...y 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 Sensor 1 1 1 NOTE No connections oth...

Страница 45: ...mpensated flow temperature to heating circuit is required recommended Has No Function 2 3 4 R1 R2 R3 5 6 24V dc T T 230V ac 50 Hz Earth Rail L1 Weiland Plug Socket PE N Room Stat L1 N L1 N L2 L1 N M L...

Страница 46: ...Connection to the volt free contacts is made via an alarm plug and lead assembly available from MHS Boilers Ltd The alarm plug and lead connects to socket x9 located behind the cover plate on the top...

Страница 47: ...emperature is direct on boiler weather compensated variable The MRO3 has the facility to connect an RE2132 modulating room unit to provide modulating room temperature and time control over the underfl...

Страница 48: ...switch 0 3v or 10v input or an RE2132 modulating room unit plus necessary temperature sensors Heating flow temperatures may be either constant temperature or direct on boiler weather compensated varia...

Страница 49: ...tion has been made i Ensure that there is an adequate heat load available j Ensure that the electrical connections have been made correctly k Combi boiler ensure domestic hot water pipework is flushed...

Страница 50: ...d display The back lit LCD display screen has two lines The normal text displayed is a Upper Line Indicates current status of boiler e g HW DEMAND and either S summer or W winter D day or N night b Lo...

Страница 51: ...Turning screw clockwise increases brightness anti clockwise reduces brightness of burner Turn the screw very slowly and just a few degrees at a time the adjustment is very sensitive Following this pr...

Страница 52: ...number of parameters that need to be set to the requirements of the attached system and the needs of the user The control parameters are accessed via a scrolling menu MENU RESET Button press and hold...

Страница 53: ...on 1 is displayed on screen d Press Menu hours will flash use or to set required hour e Press Menu minutes will flash use or to set required minute f Press Menu to confirm settings g Press switch off...

Страница 54: ...modulating room unit then this piece of control equipment should also be holiday programmed See instructions supplied with the RE2132 unit Default setting 0 days To programme a holiday period a With...

Страница 55: ...justment Press Menu button once the current setting will flash on the screen press or to input a new value between 20 C and 20 C and then press Menu button to confirm the entry c PUMP MIN Default sett...

Страница 56: ...ntry j MIN POWER Default setting 17 This is the minimum power for both central heating and hot water demands that the burner may modulate down to Recommended setting not less than 17 To alter the boil...

Страница 57: ...uit Max 85 C 20 With room thermostat volt free switch Max 55 C 21 Max 70 C 22 Max 85 C 23 No outside air temperature control With 2Nr RE2132 modulating room units Primary 70 C 24 and with secondary Un...

Страница 58: ...t Max 55 C 37 without a secondary underfloor Max 70 C 38 mixing circuit Max 85 C 39 With room thermostat volt free switch Max 55 C 40 Max 70 C 41 Max 85 C 42 Without room controls Max 55 C 43 Max 70 C...

Страница 59: ...efault compensation slope Max Flow Temperature Boiler Flow Temperature C Outside Air Temperature C Boiler Flow Temperature C Outside Air Temperature C range of parallel displacement of slope A When co...

Страница 60: ...C CH 90 80 70 60 50 40 30 20 10 20 20 20 20 20 15 10 5 1 5 10 15 20 25 0 CURV 1 C CH CURV 20 C CH Boiler Flow Temperature C Outside Air Temperature C Boiler Flow Temperature C Outside Air Temperature...

Страница 61: ...the appliance to the user check again and clean strainers filters 21 0 servicing instruction 21 1 inspection general In general maintenance inspections should take place a When the display on the uni...

Страница 62: ...ause must be found and rectified at e Draw your conclusions from the service screen of the service software program available from MHS Boilers spares department and attend to those parts that have cau...

Страница 63: ...r is initiated CH Demand The boiler is operating in central heating mode HW Demand The boiler is operating to produce domestic hot water Chimney The boiler is operating in test mode at mid output to e...

Страница 64: ...5 31 36 Fan Spd high Burner fan speed is too high 9 11 29 31 33 Fan Spd low Burner fan speed during pre purge is too low 9 10 11 14 18 29 31 33 Fan Spd oper Burner fan is detected as 4 11 29 31 operat...

Страница 65: ...ck and rectify 5 Short circuit in wiring to sensor Check and rectify 6 Boiler pump not rotating seized or defective Free seized shaft or if defective replace pump 7 System lacks water Investigate refi...

Страница 66: ...heat exchangers and system and re dose system with water treatment 26 Heat exchanger high limit stat defective Replace limit stat 27 Boiler set for wrong gas type Convert boiler to burn the gas being...

Страница 67: ...the gas supply is turned on 3 Switch on the on off switch on the appliance control panel 4 If all controls connected to the appliance are calling for heat the screen with display DHW demand or CH dem...

Страница 68: ...68 STRATA1 3 8 3 8 4 6 C O M B I 24 0 parts list Strata 1 38 parts 1...

Страница 69: ...69 STRATA1 3 8 3 8 4 6 C O M B I 24 0 parts list contd Strata 1 38 parts 2...

Страница 70: ...70 STRATA1 3 8 3 8 4 6 C O M B I 24 0 parts list contd Strata 1 38 parts 3...

Страница 71: ...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 are s...

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