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8.4 Boiler control

The Remeha Quinta 30 can be controlled using one of the following methods :

8.4.1  Modulating (two wire control)

When using the optional Broag-Remeha compensating controllers the heat output 
modulates between the minimum and maximum value on the basis of the boiler flow 
temperature sensor. This applies to both single and multiple boiler installations (up to a 
max of 8), under the dictates of a room and/or outside temperature sensor.
Three models of two wire modulating controls are available

Simple Honeywell Chronotherm Modulation

Single boiler control, compensation based on room temperature, using the Open 
Therm interface supplied as std. in the boiler.
Available with 6 adjustable time periods.
Connection via a two-core cable to terminals 1 and 2 of the 24-pole terminal strip.
Installation to be made in a reference room.
Change setting mode parameter 

(

 to 

00

. Set the 

x

 value of the boiler control 

operation parameter (

A

) to 

1

.

SR 5240 C1 

- Optimising / weather-compensated boiler control for single boiler. 

These controls are supplied with outside sensor and mounting kit for installation in 
the boiler.
Communication between the Optimising / weather-compensated control and the 
boiler control system is via an interface PCB supplied with the kit 

(to fit see Fig. 17).

 

Connection via a two-core cable and plug supplied to plug K2 in the boiler. 
Installation can also be made in a reference room. In this case, room compensation 
can also be applied. 
Connection via a two-core cable to terminals 1 and 2.
Set the 

x

 value of the boiler control operation parameter (

A

) to 

1

.

2945 C3 K 

- Optimising / weather-compensated boiler control for multiple boilers.

These controls are supplied with outside sensor, room sensor, flow sensor (used for 
multiple boiler installation only) mounting and wiring kit for installation in the boiler, 

see Fig. 16.

Communication between the Optimising / weather-compensated control and the 
boiler control system is via an interface PCB supplied with the kit 

(to fit see Fig. 17).

 

Set the 

x

 value of the boiler control operation parameter (

A

) to 

1

.

57117.indd   45

57117.indd   45

1-4-2009   14:35:53

1-4-2009   14:35:53

Summary of Contents for Quinta Pro 30

Page 1: ... m e h a Q u i n t a 3 0 High efficiency condensing boiler for wall mounted installation Output 5 6 28 kW Technical information Remeha Quinta 30 57117 indd 1 57117 indd 1 1 4 2009 14 35 28 1 4 2009 14 35 28 ...

Page 2: ...f the control panel 13 6 1 3 Combined key functions in operating mode only 14 6 1 4 Display of values with more than two digits 15 6 2 Flow diagram control system 16 6 3 Operating mode x 18 6 4 Shut off mode bXX 19 6 5 Setting mode user level X 20 6 5 1 Flow temperature set point 20 6 5 2 Pump run on time HTG 21 6 5 3 DHW temperature set point 3 21 6 5 4 Boiler control setting A 21 6 6 Setting mod...

Page 3: ...llation instructions 29 7 1 General 29 7 2 Location 29 7 3 Flue gas discharge and air supply 30 7 3 1 General 30 7 3 2 Classification due to discharging flue gases 31 7 3 3 Material and installation 32 7 3 4 Single boiler conventional flue 33 7 3 5 Single boiler room sealed flue 34 7 3 6 Different pressure zones 35 7 3 7 Modular installations 36 7 4 Hydraulic installation 36 7 4 1 Condensate and A...

Page 4: ... 4 4 High low control 2 x no volt switched pairs 48 8 5 DHW control Broag priority 48 8 5 1 Temperature control 48 8 5 2 Primary flow control 48 8 6 System pump 48 8 7 Frost protection 48 8 8 Remote alarm and boiler run indication 48 8 9 Safety interlock 49 9 Commissioning 49 9 1 Initial lighting 49 9 2 Shut down 52 9 2 1 Temporary shut down with frost protection 52 9 2 2 Permanent shut down witho...

Page 5: ...evant certification ie CORGI ACOPS IEE regs etc On completion a copy of the commissioning sheet should be returned to Broag Ltd for record purposes If you have any questions or if you need more information about specific subjects rela ting to this boiler or it s installation please do not hesitate to contact us The data published in these technical instructions is based on the latest information a...

Page 6: ...ROPANE with its gas air ratio control system ensures clean trouble free operation with higher than average efficiencies of 109 3 NCV in the condensing mode combined with ultra low NOx and minimum CO emissions The standard control package allows actual and set values to be read and adjusted on the built in digital display which also provides normal operating and fault code indication An intelligent...

Page 7: ...corporating a rematic weather compensated boiler control 9 Siphon 10 Hoses automatic air vent and condensate 11 Flue gas measure point 12 Automatic air vent 13 Gas injector venturi 14 Temperature sensor flow 15 Air inlet tube 16 Heat exchanger inspection cover 17 Pressure gauge 18 Control panel 19 Optional 3 way valve 20 DHW primary flow connection when optional 3 way valve is fitted 0 bar 1 2 4 3...

Page 8: ...will also indicate a flashing fault code confirming the reason for the failure The products of combustion in the form of hot flue gases are forced through the heat exchanger transfering their heat to the system water the flue gas temperature is reduced to approximately 5 C above the temperature of the system return water then discharged via the condensate collector vertically through the 80 125 mm...

Page 9: ... connection 22 mm Ø m when optional 3 way valve is fitted Flow connection 22 mm Ø m Gas connection 15 mm Ø m Condensate connection 25 mm Ø o d plastic Combustion air supply connection 125 mm Ø i d Flue gas connection 80 mm Ø i d Holes for mounting bracket Hose automatic air vent 8 mm Ø o d silicone 57117 indd 9 57117 indd 9 1 4 2009 14 35 49 1 4 2009 14 35 49 ...

Page 10: ... Min Max Inlet pressure propane mbar 37 50 Gas consumption natural gas m3 h 0 6 3 2 Gas consumption propane m 3 h 0 3 1 2 NOx emission mg kWh 36 NOx emission O2 0 dry ppm 20 2 Residual fan duty Pa 100 Mass flue rate kg h 10 48 Classification due to discharging flue gases B23 B33 C13 C33 C43 C53 C63 C83 Water side Maximum flow temperature ºC 100 110 Operating flow temperature ºC 20 90 Operating pre...

Page 11: ... Intelligent advanced boiler control abc c w a comprehensive operating service and fault diagnostic facility Available for conventional flue or room sealed operation Capable of remote BMS 0 10V on off and High low control options Supplied fully factory assembled Powder coated enamel steel casing Suitable for use with a Natural gas or propane as standard choices on commissio ning Supplied as standa...

Page 12: ...controls two wire to make full use of it s fully modulating fea ture ensuring that the boiler closely matches the system demand at all times External control systems BMS can be interfaced with the boiler to provide on off high low or modulating 0 10V control options 6 CONTROL AND SAFETY EQUIPMENT 6 1 The control panel 6 1 1 General The boiler is supplied with a standard set of defaults pre program...

Page 13: ... dots c reset key to reset after a lockout condition d m key Program function key to select the required mode e s key Program function key to select the required program wit hin the selected mode e s key r symbol Switch function burner switch HTG manual override f e key Program function key to save the settings f e key k symbol Switch function burner switch DHW manual override g key Program functi...

Page 14: ...nated pump under boiler control key and h symbol green symbol on HTG on manual override symbol not illuminated HTG under normal control NOTE In the Switch function in order to protect the boiler and the installation the flow temperature cannot exceed it s pre set maximum It is also not possible to change any parameters Forced mode high h By pressing the m and key simultaneously in operating mode t...

Page 15: ...as only two digits available therefore values over this are displayed as follows negative values will be indicated by a dot behind the last digit e g 1 10 values from 00 to 99 will be indicated without any punctuation marks values from 100 to 199 will be indicated by a dot between both digits e g 0 100 0 110 9 199 values from 200 to 299 will be indicated by a dot behind every digit e g for 200 210...

Page 16: ...setting u n a Setting mode service level see Par 6 6 service engineer level only Flow temperature set point during forced part load High limit temperature set point Fan speed at full load HTG Fan speed at part load HTG and DHW Modulation start point Δt F R Interface selection control option B DHW cut in Δt C Fan speed at full load DHW D intern E n a F n a G Forced part load time after start HTG H ...

Page 17: ...outdoor temperature with Chrono therm sensor n a Flow temperature set point Actual heat demand status Calculated HTG cut in temperature Actual flow temperature rise A n a service engineer level only Speed mode see Par 6 8 alternate half digit Fan speed Failure mode see Par 6 9 flashing digit 1 Failure code 2 Operating code during failure 3 Flow temperature during failure 4 Return temperature durin...

Page 18: ...e for another 10 seconds 2 Ignition ignition is activated for 2 4 seconds while the gas valve is opened 3 HTG mode the boiler operates in the HTG mode 4 DHW mode the three way valve or DHW pump activated Broag priority only 5 Internal check 6 Normal control stop during HTG flow temperature set point 5 C 7 HTG pump run on 8 DHW pump run on or for three way valve option HTG pump run on with valve op...

Page 19: ... be recorded B Internal check on fan speed After 5 attempts the boiler will lockout This code will be recorded B Maximum temperature difference between flow and return exceeded The boiler will shut off for 150 seconds then restart Should the temperature difference conditions remain the same after 10 attempts this code will be recorded as a shut down failure Boiler will not lockout B One or several...

Page 20: ...ith sensor 55 A Boiler control setting Control mode modulating on off etc 11 u Base point internal com pensation slope n a 20 Table 06 Setting mode user level Note Changing code and code A should only be on design engineers advice 6 5 1 Flow temperature set point The required flow temperature is adjustable from 20 to 90 C factory default 80 C Fig 04 Typical setting change procedure 57117 indd 20 5...

Page 21: ...ss the m key until the digit with dot appears in the code display Press the s key until the digit with dot appears in the code display Set the required value using the and keys Press the e key to store the new value value will flash twice Press the reset key to return to operating mode REMARK there are further adjustments available on service level Please refer to your service engineer or contract...

Page 22: ...h booster on 2 Boiler high low 3 Boiler enabled internal modulation with booster off 4 Analog signal 0 10V on temperature 5 Analog signal 0 10V on output t display Description Second segment y Operation mode 0 HTG and DHW off 1 HTG and DHW on 2 HTG on and DHW off 3 HTG off and DHW on Table 08 Boiler control option NOTE Booster function n a in UK 6 6 Setting mode service level X00 only for the qual...

Page 23: ...ode Description Setting range Preset Q30 Flow temperature set point during forced part load 20 90ºC 80 High limit temperature set point 90 0 110 C 0 100 Fan speed at full load HTG 10 60 hundreds 48 Fan speed at part load HTG and DHW 10 60 hundreds 12 Modulation start point ΔT F R 05 30 ºC 25 Interface selection control option 00 internal Chronotherm control only 01 01 external interface B DHW cut ...

Page 24: ... sig nal 50 299 C 0 100 _ Intern 10 Table 09 Settings service level NOTE see Par 6 1 4 for values over two digits 6 6 1 Flow temperature set point during forced part load Adjustable from 20 to 90 C factory default 80 C This value will prevent the flow temperature exceeding this temperature during the part load time 6 6 2 High limit thermostat Adjustable from 90 to 110 C 0 factory default 100 C 0 T...

Page 25: ... advice from the service engineer NOTE Installations with low flow problems would benefit by reducing this set point to force modulation to begin sooner and minimise boiler off time 6 6 6 Interface selection Adjustable 00 or 01 factory default 01 This value sets the control option 01 for standard 0 10 Volt external control and rematic series of compensators if fitted 00 for the Honeywell Chronothe...

Page 26: ...t be changed 6 6 9 Forced part load time after start HTG only G Adjustable from 00 15 min factory default 03 3 minutes This value sets the period of time the boiler will stay on part load at start up during which time the flow temp is limited by part load temp set point parameter Changing the factory default should only be carried out on advice from the service engineer NOTE When using an external...

Page 27: ...hanged 6 6 14 Maximum delay time U Adjustable from 00 99 minutes factory default 15 minutes 15 This value sets the maximum off time following a control stop The minimum off time is preset to a fixed value 150 sec A combination of both values is used to prevent hunting taking place 6 6 15 Start and end point analog signal Q and Y Start point 0 Volt adjustable between 5 50 C and 50 C factory default...

Page 28: ...erature rise 0 1 C sec 02 A n a Table 10 Read out mode user level 6 8 Fan speed mode 00 Using the m key press repeatedly until code display shows alternate flashing half digits The value in the t display shows the actual fan speed using two alternate double digits as table Code Description Example 5250 r m Fan speed 52 hundreds Fan speed 50 units Table 11 Fan speed mode service level 6 9 Failure m...

Page 29: ...itish Standards and codes of practice including the latest local and national regulations for this type of equipment Important The Remeha Quinta 30 is a CE certified appliance and must not therefore be modified or installed in any way contrary to these Installation and Maintenance Instructions These manufactures Instructions must NOT be taken as overriding statutory obligati ons Failure to install...

Page 30: ... ventilated or room sealed operation Specify at the time of ordering if the boiler is to be installed for twin pipe room sealed operation In that case the boiler will be supplied with an adaptor plate concentric to twin pipe Before installing flue system remove the transit cover plate Fig 06 Top view Remeha Quinta standard concentric version with optional twin pipe adaptor shown right 05 W3H 79 00...

Page 31: ...losed Type C13 Room sealed boiler connected to combined wall outlet Type C33 Room sealed boiler connected to a combined roof outlet Type C43 Room sealed boiler in cascade configuration connected via two ducts to a common duct system serving more than one boiler Type C53 Room sealed boiler connected to separate ducts for the air supply and flue gas discharge terminated in zones of different pressur...

Page 32: ...ffected by the flue dilution fan pressures For full details please contact Broag 7 3 3 Material and installation Flue gas discharge Rigid single walled stainless steel 316 aluminium or plastic to comply with building regulations Flexible stainless steel 316 Construction all joints and seams should be gastight and watertight with the horizontal runs graded towards the boiler to allow condensate fre...

Page 33: ... eq Length bend 90 m 4 Table 13 Calculation data conventional flue Example Quinta 30 total length 15 m 2 bends 90 15 m 2 x 4 23 40 flue OK Note If the design parameters are outside the values shown in the above table or there is any doubt over the flue system please contact our technical department for calculation to be undertaken 57117 indd 33 57117 indd 33 1 4 2009 14 35 52 1 4 2009 14 35 52 ...

Page 34: ...nd 45 m 1 2 eq Length bend 90 m 4 Table 14 Calculation data room sealed applications Example Quinta 30 total length 10 m 2 bends 90 80 mm 10 m 2 x 4 18 m 20 m flue OK Note If the design parameters are outside the values shown in the above table or there is any doubt over the flue system please contact our technical department for calculation to be undertaken 57117 indd 34 57117 indd 34 1 4 2009 14...

Page 35: ...r inlet lengths and max height differences which have been detailed in Fig 09 Maximum total length of air inlet and flue gas outlet pipework L as detailed in table below calculation based on using 1 x 90 bend Quinta 30 80 mm max eq Length m 20 eq Length bend 45 m 1 2 eq Length bend 90 m 4 Table 15 Calculation data different pressure zones NOTE this system may not be used in areas with adverse wind...

Page 36: ...se of the risk of freezing 7 4 2 Water treatment The system should be filled with mains cold water for the UK this will usually have a pH of between 7 and 8 Pressurised installations with a boiler system content ratio of 1 10 or less should not require water treatment provided that the following conditions apply The system is flushed thoroughly to remove all fluxes and debris and filled comple tel...

Page 37: ... debris grease and metal swarf generated during installation Care to be taken with old systems to ensure any black metallic iron oxide sludge and other corrosive residues are removed again by thoroughly flushing ensuring that the system is drained completely from all low points NOTE Please ensure that the new boiler plant is not in circuit when the flushing takes place especially if cleansing chem...

Page 38: ... expansion tank heights for all open vented systems must comply with the requirements laid down in the Health and Safety Executive publication latest execution The Remeha Quinta series boilers require a minimum static head of 3 m 7 4 4 Safety valve A safety valve should be fitted in accordance with the British Standards Recommen ded minimum size of 15 mm full bore type 7 4 5 Gas connection Connect...

Page 39: ...n inbuilt DHW control This control when used in conjuction with the optional Broag DHW sensor or ther mostat not a Broag supply a 3 way diverting valve or DHW pump can provide boos ted primary flow temperature independent of the variable temperature flow for the fully condensing mode However it can be independantly time controlled and will isolate the HTG system during the demand period On demand ...

Page 40: ...HTG or turns off the DHW pump and turns on the system pump provided there was still a HTG demand If no HTG demand the selected pump will run on for a maximum of 5 minutes A Broag high output indirect calorifier can be connected to the Remeha Quinta 30 in accordance with the schematic sketch shown see Fig 11 and Fig 12 Fig 11 Remeha Quinta with calorifier and three way valve 04W4HHS00003 57117 indd...

Page 41: ...41 Fig 12 Remeha Quinta with calorifier and DHW pump 04W4HHS00002 57117 indd 41 57117 indd 41 1 4 2009 14 35 52 1 4 2009 14 35 52 ...

Page 42: ...Electrical rating 10 VA Pre purge time 3 seconds Post purge time 10 seconds Anti hunting time 150 seconds Pump run on HTG 1 15 minutes Pump run on DHW 5 minutes 8 2 3 Fuse specification The boiler is protected by fuses on the main power supply located in the euro connector socket rated at 6 3 amps slow acting Spare fuse is supplied located in the euro connector socket control circuit 230 Volt loca...

Page 43: ...ection flow and content The Remeha Quinta 30 is supplied with a low water protection on the basis of tempe rature measurement see Fig 22 Boiler sensor resistance temp graph By modulating back at the moment that the water flow threatens to fall too low the boiler is kept ope rating for as long as possible In the event of low flow F R ΔT 45 C the boiler will shut off and not lockout ref Par 6 4 If t...

Page 44: ...lve or primary pump Boiler pump or System pump max 1Amp 230V signal to BMS power supply live External interlock volt free Not UK boiler Not UK boiler ON OFF 1st stage outdoor sensor High low 2nd stage or 7 3 2 6 1 5 1 4 Fig 14 Terminal strip Remeha Quinta 30 04 W3H 79 00014 remove link to use see Par 8 8 Fig 15 Electronic components 05 W3H 79 00078 1 Screws instrument panel 2 Terminal strip 3 Cabl...

Page 45: ...imising weather compensated boiler control for single boiler These controls are supplied with outside sensor and mounting kit for installation in the boiler Communication between the Optimising weather compensated control and the boiler control system is via an interface PCB supplied with the kit to fit see Fig 17 Connection via a two core cable and plug supplied to plug K2 in the boiler Installat...

Page 46: ...07 1 rematic control 2 Earth terminal 3 Terminal strip 4 rematic adapter 5 Cable clamp NOTE Please refer to the relevant con trol leaflet for optimising compensation settings Fig 17 Fitting the interface 05W4H7900008 57117 indd 46 57117 indd 46 1 4 2009 14 35 53 1 4 2009 14 35 53 ...

Page 47: ... voltage and the desired flow temperature see Par 6 6 15 and the graph below Output based fixed parameters 20 to 100 see graph below 0 Volt boiler off 0 5 2 0 Volt heat input 20 2 0 10 Volt boiler modulates between 20 and 100 on demand Set the x value of the boiler control operation parameter A to 5 NOTE When using an external analog 0 10V the factory default 03should be changed to 00 Fig 18 Tempe...

Page 48: ... pump requires more than 1 amp terminals can only be used to switch a pump relay 8 6 System pump A system pump can be connected to terminals 19 and 20 230 50 max 1 Amp If the system pump requires more than 1 Amp terminals can only be used to switch a pump relay 8 7 Frost protection Install the boiler in a frost free room If the boiler water temperature drops below 7 C the built in frost protection...

Page 49: ...and installation is full of water and at the correct pressure 8 Vent the system if necessary 9 Fill the siphon with water 10 Close the instrument box 11 Check the flue and the combustion air supply connections NOTE The boiler is suitable for both natural gas and propane firing It is supplied as standard set for natural gas therefore the following procedure must be carried out BEFORE the boiler is ...

Page 50: ... boiler at full load by pressing m and keys simultaneously 16 3 When full load speed is reached check values against the table and adjust if necessary using the screw on the venturi see Fig 21 Fig 21 Setting screws 05 W3H 79 00064 Full load setting screw can also be reached through the top of the casing by remo ving a little plug 57117 indd 50 57117 indd 50 1 4 2009 14 35 53 1 4 2009 14 35 53 ...

Page 51: ... minimum 4 μA 1 V dc 1 μA dc see Fig 23 NOTE The full load adjustment changes the gas air graph slope angle whilst the part load adjustment shifts the base point on a parallel axis each adjustment therefore alters the previous setting slightly Repeat the process 16 2 to 16 7 and re check the values as many times as necessary until they are correct at both loads 17 Remove the flue gas analyser Seal...

Page 52: ...se of the fault using operating mode shown 4 Use boiler manual override see Par 6 1 3 Does the boiler start up Yes check external con trol and wiring or go to point 6 No go to point 5 5 Override external controls by fitting a link across terminals 3 and 4 of the boiler terminal strip Does the boiler start up Yes check boiler para meters If all OK then replace control box No repeat point 3 or go to...

Page 53: ...oiler terminal strip and to the Gasmodul control box Table 17 Fault finding 10 2 Fault codes In the event of an error message both the code display and the t display will flash For details see Table 18 For a readout of the most recent faults see Par 6 9 IMPORTANT Before resetting accurately record the fault code including figures flashing digits and dots and remember to pass on this information wh...

Page 54: ... is fitted properly is clean and set the gas air ratio is correct see Par 9 1 the gas pipe is not clogged or incorrectly sized the air supply and flue outlet is free of obstructions if the condensate siphon is clear there is no flue gas recirculation internal external c Flame but no or insufficient 4 A ionisation check flame is flame core visible is flame geometry stable Check CO2 at both part and...

Page 55: ...tions and for continuity Fan defective Flue draft conditions too high 3 Temperature sensor failure Flow temperature sensor short circuit 3 Return temperature sensor short short circuit 3 Outside temperature sensor short short circuit 3 Flow temperature sensor not connected or open circuit 3 Return temperature sensor not connected or open cir cuit 4 Setting failure check parameter D first digit mus...

Page 56: ...Remeha Quinta 30 56 Fig 22 Sensor resistance graph 57117 indd 56 57117 indd 56 1 4 2009 14 35 54 1 4 2009 14 35 54 ...

Page 57: ... 1 5 7 6 8 X11 3 Measuring V 1V 1μA Maximum ionisation current 9V μA Minimum ionisation current 4V μA of terminal strip To earth clamp in instrument panel 12 2 11 10 9 range To terminal 4 57117 indd 57 57117 indd 57 1 4 2009 14 35 54 1 4 2009 14 35 54 ...

Page 58: ...oundness check flue and air inlet system is clear and gas water tight check system pressure check control settings check ionisation level minimum 4 A dc ionisation measurement in Volts between terminal 4 and earthing 1V dc 1 A dc If ionisation level 4 A dc check CO2 at both part and full flame is flame core visible is flame geometry stable ignition probe earthing temperature sensors for loss curre...

Page 59: ... the mains power supply is isolated before components are dis connected from the boiler for maintenance 2 Care should be taken when stripping the boiler for maintenance making sure that all parts nuts washers and gaskets etc are kept safe clean and dry 3 Following cleaning the boiler should be re assembled in the reverse order re pla cing gaskets and joints where found necessary 4 All general clea...

Page 60: ...ed by us remain our property and may not be multiplied without our prior consent in writing R e m e h a Q u i n t a 3 0 Broag Ltd Remeha House Molly Millars Lane RG41 2QP WOKINGHAM Berks Tel 44 118 9783434 Fax 44 118 9786977 Internet uk remeha com E mail boilers broag remeha com 57117 AE 010409 Subject to alterations 57117 indd 60 57117 indd 60 1 4 2009 14 35 54 1 4 2009 14 35 54 ...

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