Mamiya C32, C28, C24 manual To Adjust Pressures, Maximum valve setting, Minimum valve setting

Page 30

 

INSTALLATION

 

 

35 TO ADJUST PRESSURES

(burner pressure).

 

By rotating clockwise the pressure increases.

Nomenclature of the parts on the gas valve

HModulation operator’s electric connectors I Minimum gas pressure adjustment

J Maximum gas pressure adjustment K On---off operators electric connector L On---off operators

M Gas valve inlet pressure test point N Burner pressure test point

10Turn the boiler off and re---connect the wire to the modulating operator.

11Start the boiler and check again the maximum gas pressure setting.

12Turn the boiler off and disconnect the gauge and close the gas valve outlet pressure test point N

Important: after the gas pressure checks and any adjustment operations, all of the test points must be sealed and replace the adjustment protection cap.

Ignition rate adjustment

1Turn on the boiler.

INSTALLATION

N

M

J

L

I

H

K

2Check that the boiler lights up uniformly and adjust the ignition gas pressure, if necessary.

To adjust the ignition gas pressure:

3Open the gas valve outlet pressure test point N and connect the gauge.

4Rotate the radiator temperature control C as indicated in the next figure and ensure that the room thermostat, if fitted, is set to “heat demand”.

5Run the boiler in c.h. mode (do not open any d.h.w. tap)

ABC D E

6Press and hold the reset button D for about 10 seconds until the lock---out signal light E blinks.

7The lamps A should give the indication of the next figure; if not then press the reset button D until you obtain it.

Where:

Lamp ON

 

1Remove the front panel of the case.

2Open the gas valve inlet pressure test point M at the valve input, connect a suitable pressure gauge and check the gas pressure of the supply network.

3Remove the gauge and close the pressure test point M.

4Open the burner pressure test point N and connect the gauge.

5Remove the protection cap from the mechanical pressure adjustment components (I and J)

6Start the boiler at its maximum power.

Operate the boiler in DHW mode or ensure that the boiler is not range rated if the test is carried out in CH mode.

Maximum valve setting

7If necessary, rotate the maximum gas pressure adjustment J using a spanner until you obtain the required pressure as indicated on Table 1 at page 4 (burner pressure).

By rotating clockwise the pressure increases.

Minimum valve setting

8Turn the boiler off and disconnect one of the two connectors H.

9Start the boiler and if necessary, rotate the minimum gas pressure adjustment I using a spanner until you obtain the required pressure as indicated on Table 1 at page 4

Lamp OFF

8Press and hold the reset button D for about 5 seconds until the lock---out signal light E is switched off.

The boiler runs in c.h. mode and the lights A give the follow indication:

Where:

Flashing lamp, alone

 

or simultaneously with

 

an other lamp.

 

Lamp OFF

9Rotate the DHW temperature control B on a position corresponding to an adequate ignition pressure. By rotating clockwise the pressure increases.

Suggested ignition pressures:

Natural gas G20 --- 6 (2,4) mbar (in w.g.)

Propane G31 --- 13 (5,3) mbar (in w.g.)

10Make a note of the position of the DHW temperature control B.

11Turn the boiler off and on positioning the main switch C as indicated in the next figure.

30

mini HE --- Installation & Servicing

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Contents Installation and servicing Mini HE --- Installation & Servicing Document Amendments Performance Data --- Central Heating GeneralBoiler Data Domestic Hot WaterContents Benchmark Commissioning Checklist DetailsGeneral Boiler Water Connection Boiler ClearancesOptional Extra Kits GAS SafetyIntroduction Safe HandlingSafe Handling of Substances Flue Installation RequirementsGAS Supply Location of Boiler and Flue OutletAIR Supply Water Circulation SystemWater Treatment Additional PumpsElectrical Supply RequirementsMini HE C24, mini HE C28 Size of expansion vesselHydraulic Loss Remaining pump capacity General Boiler Control Interlocks Domestic HOT Water RequirementsGeneral Boiler Water Circuit Diagram Installation Installation Boiler AssemblyHardware pack contents Installation UnpackingPack a contents Pack B contentsInstallation Fitting the Flue SystemTwin Pipe Rear Flue AssemblyRefer to the following diagram for the model mini HE C32 Flue DuctWall Mounting Template rear flue Installation Cutting the Flue RingFitting the Extension Kits Installation Fitting the Optional Roof Flue Roof Flue KIT CONTENTS/OPTIONSInstallation Flue Terminal Position Flue ArrangementAssembling the Roof Flue KIT Flue over 3 meters longMounting the Boiler Installation Fitting the Wall Mounting PlateFit the service valves, washers and tail pipes as shown ConnectionsLocate the gasket and flue turret on the top of the boiler Safety Valve DrainCondensate Drain Flues over 1 meter longFor external controls wiring see frame Incoming mains wiring detailElectrical Connections Pictorial Wiring Installation Functional Flow Diagram Control pcbExternal Electrical Controls Electrical Connections for a Combi BoilerInstallation Initial Lighting To Adjust Pressures Maximum valve settingMinimum valve setting Electrical Installation Anti Cycling SettingCommissioning and Testing Gas InstallationGeneral Checks Installation GAS Conversion Handing OverServicing Servicing ScheduleServicing Removal of Outer and Inner Casing RE---ASSEMBLY Servicing Burner Removal and CleaningCleaning the Heat Exchanger Burner Pressure CheckServicing FAN and Venturi Removal and Cleaning Remove the fan by sliding it towards left see the arrowBurner Injectors Replacement Spark and Detection Electrode ReplacementBurner Replacement When replacing any componentTemperature Probe Replacement Servicing Overheat Thermostat ReplacementFlue Temperature Probe Replacement Removal of CH temperature probeGAS Valve Replacement Expansion Vessel ReplacementServicing FAN Replacement Venturi ReplacementAIR Pressure Switch Replacement Pump Replacement Complete Servicing Electronic CONTROL/IGNITION PCB Replacement Boiler mode setting Servicing CH Flow Switch Replacement CH Flow Switch Membrane ReplacementServicing DHW Flow Switch Replacement DHW Filter and Flow Limiter ReplacementFlow limiter Servicing Primary Heat Exchanger Replacement Recuperator ReplacementServicing Diverter Valve Actuator Replacement Diverter Valve Internal Parts ReplacementServicing DHW Heat Exchanger Replacement CH Drain Cock ReplacementCondensate Trap Replacement To clean the condensate trap and drainTo replace the condensate trap Normal operation OFFFault Finding FindingFrom Fault finding Fault Finding Fault Refer back to page 52 of fault finding to continue Fault Finding From Fan mod. mini HE C28, mini HE C32 Burner mod. mini HE C28, mini HE C32075535 17398422 23 Installer Notification Guidelines GAS Boiler Commissioning Checklist Service Interval Record Technical Training Ideal boilersInstaller the contact fire not does Installer Water hot orCorrectly Ignition at attempt Maintenance CleaningGAS of Escape Lights Diagnostic Boiler the Light toClearances Minimum

C28, C24, C32 specifications

The Mamiya C series is celebrated among photography enthusiasts for its unique twin-lens reflex (TLR) design, offering both a classic aesthetic and innovative features that set it apart in the world of medium format cameras. The C32, C24, and C28 models represent a range of technology and design advancements that cater to various shooting needs.

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In summary, the Mamiya C32, C24, and C28 each present unique features and technological advancements that cater to various types of photographers. Whether it's the precision of the C32, the compact convenience of the C24, or the versatile performance of the C28, these cameras maintain a special place in the hearts of medium format enthusiasts, showcasing the blend of craftsmanship and innovation that Mamiya is known for.
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