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MHS Boilers STRATA 3 220, Instructions For Installation, Servicing & Operation, Page: 18 / 47

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MHS Boilers STRATA 3 220 Instructions For Installation, Servicing & Operation Download Page 18

18

STRATA3

5.7.11 circuit diagram

S1

B

S

B

S

B

S

B

S

S

1

3

2

20

10

10

5

16

8

9  

1

6

2

1

4

3

1

6

FUSE 24V

FUSE 

230 VAC

2 (X)

VOLT FREE ALARM CONTACT

Gas Valve 230 VAC

Fan

HWS D/Valve

HWS Pump

R/Stat

PRO 1

PRO 3

LPG

Solenoid

Supply

230  VAC

Boiler

Pump 

3

12

4

1

11

1

RS232

4

1

21

2

VTE

Transformer

Flow Temperature Sensor

Return Temperature Sensor

Water 
Pressure Sensor

Gas Pressure Switch

Limit thermostat water
12 VDC Primary Boiler

Limit thermostats

Condensers 12 VDC

Model
330 Only

Fluegas Limit Thermostat 12 VDC

Outside Sensor
Room unit
Cascade Manager
0-10V (via special adaptor)

KO = White
K2 = Brown
K3 = Green
K4 = Gray
K5 = Orange
K6 = Blue
K7 = Red
K8 = Black

X10

X12

K5

K5

K6

K6

K7

K2

K3

K8                     

K0

K12

K18

K18

K17

K4

K18

K12

K19

K17

K20

K20

X17

B

S

B

S

X19

K0

K6

K0

K7

K9

K9

K9

K9

K9

K13

K2

X16

1

2

3

4

PE

4

5

6

1

2

3

5

6

6

5

4

3

J6

J5

2

1

RTE

S4

X1

X2

X3

MRO3

PRO1

X4

X5

X6

X7

X8

X32

X33

X43

X42

X41

X26

F

F

HSP TOP

Fuse (2x)

230 VAC

Ignition/Ionisation

FURIMAT 762

X9

F

Q-P

K9 = Violet
K12 = Yellow/White
K13 = Braun/White
K14 = Green/White
K17 = Blue/White
K18 = Red/White
K19 = Black/White
K20 = Violet/White

1

1

6

5

4

3

2

1

2

3

4

5

6

R3

R2
R1

A1

A2

23

4

X15

RTE

D1

HWS

Sensor/

Volt Free stat

= Weiland Plugs

X45

X44

X63

X61

X62

K8

Q-P

Q-P

X21

B

S

B

N

LIN

PE

PE

LL

N

LP

PRO 1

PRO 2

RE2  

L

N

L

L1

PE

N 

N N 

N 

EL

IO

PE

PE

L

 L

 L

L2

N

PE

L1

N

PE

PE

L

N

PE

L

N

L

PE

N

L

L2

N

PE

L1

PE

N 

L

PE

N 

N

L

PE

PE

 N

 B

 S 

 B

 S 

 B

 S 

 B

 S 

 N

 L

L

L

PE

PE

 N

L

L

L

PE

PE

 N

 N

 N

 1

 3

 2

 N

L

 N

LL

 LP

 N    

L

PE

 N

 B

S     

A1  

A2  

230V DC

230V DC

230V DC

A1  

A2  

RE1  

PE

N

L

S

S

X22

Q-P

X20

B

S

X18

X18

Q-P

Q-P

 1

 2

 3

 4

 6        

5

4

6

3

2

1    

Fig 5.7h

circuit diagram Strata 3 220/330

Summary of Contents for STRATA 3 220

Page 1: ...D U L AT I N G F U L LY C O N D E N S I N G G A S F I R E D B O I L E R S W I T H S I N G L E U N I T O U T P U T S U P T O 3 3 1 k W I N S T R U C T I O N S F O R I N S TA L L AT I O N S E R V I C I...

Page 2: ...l 16 5 7 7 Cascade Controller KKM2 17 5 7 7 Cascade Controller KKM2 cont d 5 7 8 Domestic Hot Water Temperature Sensor TF page section 17 5 7 9 LPG Operation 5 7 10 Connecting the DHW Primary Pump 18...

Page 3: ...d and create bench marks for their appliance class Fully modulating heat output The output of each boiler is fully variable modulating between 20 and 100 of maximum output automatically and instantly...

Page 4: ...ety interlock for high water temperature high flue gas temperature low gas inlet pressure and low system water pressure 4 LCD display screen with 2 lines of text to continuously display operation or f...

Page 5: ...Condensate Volume l h pH Value Condensate Water CO Emission mg kWh NOx Emission mg kWh Pressure at Flue Outlet Pa Min Max Working Pressure bar Max Flow Temperature C Power Supply V Power Consumption M...

Page 6: ...S Strata 3 220 1755 1430 628 1235 500 1 BSP M 1 BSP M 555 DN150 930 DN100 150 170 1270 1 BSP M DN 40 PN6 DN 40 PN6 575 DN 40 Strata 3 330 1755 1700 628 1515 500 11 2 BSP M 11 2 BSP M 496 DN200 1310 D...

Page 7: ...position The following considerations must be observed when siting the Strata 3 boiler The boiler is not suitable for external installation The position selected for installation should be within the...

Page 8: ...r Act Memorandum on Chimney Heights Note The Clean Air Act Memorandum prevents the use of balanced flue appliances discharging at low level where the total heat input to the plant room exceeds 150kW G...

Page 9: ...lling the boiler onto an old system it is recommended to install a spirotech or similar dirt arrester filter Failure to cleanse and water treat the system will render the appliance guarantee void If p...

Page 10: ...lling must be by a method that has been approved by the Water Regulation Advisory Scheme WRAS for that type of heating system ie Non Domestic Other than in House Fluid Category 4 C 4 For Category 4 sy...

Page 11: ...e with IGE UP 1 WARNING Before purging open all doors and windows also extinguish any cigarettes pipes and any other naked lights The mains cable must be PVC insulated to BS 6500 table 16 WARNING THIS...

Page 12: ...7 mbar G31 for propane LPG The installer should install a pressure test point adjacent to the gas inlet connection The gas supply line should be purged in accordance with IGE UP 1 WARNING Before purgi...

Page 13: ...is at risk of freezing then the pipe must be suitably insulated to protect it from freezing If a suitable drain for accepting the condensate waste is not available nearby to and below the boiler e g...

Page 14: ...7 5 7 2 fuses The Strata 3 boilers have 3 electrical fuses in the boiler control panel fig 5 7b 1 2 3 x2 Fig 5 7c location of fuses 6 4 3 2 1 6 4 3 2 1 5 Control Panel Rear Side location of electrica...

Page 15: ...installed The external sensor should be mounted on the North or Northeast side of the buildings at approximately 2 3 of fa ade height The external temperature sensor should not be mounted above windo...

Page 16: ...perature and or the sensed room temperature via the RE 2132 if required or 0 3 or 0 10v input The KKM2 may also be set to give a constant flow temperature and can also control a domestic hot water cir...

Page 17: ...no heat demand or a fault Connections for an external solenoid if required are provided at plug No 2 see fig 5 7b 5 7 10 connecting the DHW primary pump if required A domestic hot water primary pump c...

Page 18: ...17 K4 K18 K12 K19 K17 K20 K20 X17 B S B S X19 K0 K6 K0 K7 K9 K9 K9 K9 K9 K13 K2 X16 1 2 3 4 PE 4 5 6 1 2 3 5 6 6 5 4 3 J6 J5 2 1 RTE S4 X1 X2 X3 MRO3 PRO1 X4 X5 X6 X7 X8 X32 X33 X43 X42 X41 X26 F F HS...

Page 19: ...casing Refer to the instructions supplied with the unit 140 60 115 Technical Information Supply Voltage 230V 50Hz mains from Strata 3 appliance Maximum contact load 2A Maximum contact rating 120W NOTE...

Page 20: ...PE 2 L1 PE N L2 X16 X3 6 5 4 3 2 1 X3 X2 Fig 5 8a 5 8 1 Pump module PR 01 contd Pump 2 System heating pump PR 01 Power Supply Weiland Plug 3 Control Panel Wiring Cable sets are supplied labeled and ap...

Page 21: ...ired if pump duties are greater than detailed above The mixer module MR 03 is used if a standard heating circuit eg for normal temperatures for radiators and a mixed heating circuit eg for under floor...

Page 22: ...nderfloor Heating Pump System Heating Pump PUMP 2 SENSOR 7 PUMP 2 L N L1 L2 N M N L X2 X4 S7 RE 2132 8 7 6 5 4 3 2 1 X16 X3 6 5 4 3 2 1 L1 PE N L2 Fig 5 8e Power Supply Room unit controlling underfloo...

Page 23: ...a fault This fault contact can be applied with 230V AC and a maximum of 1A via an adapter X9 see fig 5 8f X9 plug lead assembly available from MHS Spare Parts Department Fig 5 8f This contact can be...

Page 24: ...pipework must include some method of filtering or straining The filter or strainer must be fitted with isolation valves to allow easy cleaning with the minimum amount of water loss and water replenis...

Page 25: ...heck the polarity of the power supply Water Check that the setting of the safety valve is correct Max boiler operating pressure 6 bar System controls Set all system controls to the required set points...

Page 26: ...corresponds to maximum output Measure the CO2 value directly for maximum output by analysing flue gas in the flue system Refer to table 6 below Type of Gas Injector Diameter mm Minimum Output CO2 Max...

Page 27: ...emperatures are required then ensure the supplied outside air temperature sensor has been installed and DIP switch No 2 has been set to on The boiler is supplied with the compensation slope shown fig...

Page 28: ...A B C 5 10 15 20 25 0 Max Flow Temperature Boiler Flow Temperature C Outside Air Temperature C Dip Switch Settings When compensation req d outside sensor must be installed and dip switch No 2 set to...

Page 29: ...r Temperature C 90 BLUE d e f a u l t 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 29 STRATA3 6 4 2 setting weather compensation contd...

Page 30: ...is a hot water temperature sensor connected the hot water set point temperature can be adjusted by the green potentiometer Adjustable range 20 C 60 C The hot water temperature can be read from the dis...

Page 31: ...inuously in heating mode to protect the building Fault Outside There is a fault in the outside air sensor or in the wiring to the sensor or the DIP switches are incorrectly set to ask the boiler to lo...

Page 32: ...he function of overheating of the heating water By pressing the test button the display LIMIT appears During this display the function of the Strata 3 is shut down The boiler commences operation when...

Page 33: ...hether a room unit cascade control or a volt free switch are connected Whether the primary heating circuit is a high medium or low temperature operation Whether a primary pump or a three way diverter...

Page 34: ...tor Circuit mt 70 50 C OFF 1 x Room Unit RE2132 ON 2 x Room Units RE2132 Off Off Remote Remote On Off Sensor Remote On On Sensor Sensor Dip Switches 3 4 ON Radiator Circuit ht 85 65 C ON Underfloor Zo...

Page 35: ...ase contact the Technical Department Note The burner must never be touched with the hand and must never be cleaned mechanically this can cause damage to the surface 7 Check the bolts for fixing the bu...

Page 36: ...31 33 FAN LOW Fan speed too low 9 10 11 18 29 31 33 44 FAN OP Fan operation is identified when fan should be off 17 30 FLAME W O OP Flame identified when burner should be off 17 30 SX INTERRUPT Conne...

Page 37: ...oisture 18 Defective transformer Replace transformer 19 Siphon is dirty blocked Flush siphon and check condense waste system is clear 21 Contact resistance at the STB water or Measure resistance over...

Page 38: ...carried out In addition no guarantee is made for damages which have arisen from Unsuitable and inappropriate use Erroneous assembly commissioning or servicing by unqualified persons Erroneous or carel...

Page 39: ...STRATA3 39 11 0 parts list Strata 3 220...

Page 40: ...40 STRATA3 11 0 parts list contd Strata 3 220...

Page 41: ...41 STRATA3 11 0 parts list contd Strata 3 220...

Page 42: ...42 STRATA3 11 0 parts list contd Strata 3 220...

Page 43: ...43 STRATA3 11 0 parts list contd Strata 3 330...

Page 44: ...44 STRATA3 11 0 parts list contd Strata 3 330...

Page 45: ...45 STRATA3 11 0 parts list contd Strata 3 330...

Page 46: ...46 STRATA3 11 0 parts list contd Strata 3 330...

Page 47: ...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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