Mamiya C32, C28, C24 manual Installation GAS Conversion, Handing Over

Page 33

INSTALLATION

39 GAS CONVERSION

Gas type

 

 

 

L.P.G.

 

 

 

Setting No.

 

 

4

 

 

 

1Check that the gas cock fitted under the boiler is turned off and the appliance is switched off at the mains isolating spur.

2Remove the front panel of the case.

3 Take off the lid of the sealed chamber.

4Take the front panel of the combustion chamber off and remove the burner as explained in frame 43.

NATURAL

1

GAS

 

B

5Carry out the conversion for the type of gas, replacing the burner injectors correctly as explained in frame 51.

6Re---assemble the burner, the front panel of the combustion chamber and the lid of the sealed chamber.

7Switch on the appliance at the mains isolating spur.

8Turn the boiler OFF positioning the main switch C as in figure below.

ABC D E

9Disconnect the CH temperature probe (24 on page 14).

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

11Connect the CH temperature probe (24 on page 14).

12Press the reset button D repeatedly (4 times) until the lamps A give the follow indication:

Gas

Position of

Approx. Max current through the

supply

knob B

modulator device

 

 

 

Natural gas

1

125 mA

 

 

 

L.P.G.

4

165 mA

 

 

 

13To change the setting turn the DHW temperature control B to a position corresponding to the gas used as shown in the figure above.

By turning the control B, the lock---out signal lamp E blinks quickly (2 per second) indicating that the setting has changed and must be memorized.

14To memorize the setting keep pressed the reset button D for about 5 seconds until the lamps A briefly blinks simultaneously.

15Open the gas cock.

16To reset the boiler to the normal operation turn it ON by the main switch C on the desired operation and checking the ignition pressure and that the burner lights up uniformly. The boiler automatically resets to its normal operation after 10 minutes if the above reset operation is not performed.

The factory setting is Natural gas.

17Calibrate the gas valve according to the instructions given in this manual.

INSTALLATION

Where:

Lamp ON

 

 

Lamp OFF

At this time it is possible to determine the current setting by keeping the reset button D pressed for more than 5 seconds. The lamps A will flash a number of times corresponding to the setting of the DHW temperature control B (see next figure).

18Set the correct gas pressure for central heating output required.

19Stick the self ---adhesive label (included with the conversion kit, indicating the type of gas, and the gas pressures to which the appliance has been set) over the existing label on the bottom of the control panel and replace the adjustment protection cap.

20Replace the front panels of the case.

21Check the correct operation of the boiler.

40 HANDING OVER

After completing the installation and commissioning of the system, the installer should hand over to the householder by the following actions:

1Hand the User’s Instructions to the householder and explain his or her responsibilities under the Gas Safety (Installation and Use) Regulations 1994 and amendments 1996 or rules in force.

2Draw attention to the Lighting Instruction label affixed to the inside of the lower front door.

3Explain and demonstrate the lighting and shutting down procedures.

4The operation of the boiler and the use and adjustment of ALL system controls should be fully explained to the householder, to ensure the greatest possible fuel economy consistent with household requirements of both heating and hot water consumption.

5Advise the user of the precautions necessary to prevent damage to the system and to the building, in the event of the system remaining inoperative during frosty conditions.

6If a programmer is fitted, draw attention to the Programmer Instructions and hand them to the householder.

7After installation and commissioning please complete the Commissioning Checklist before handover to the customer.

For IE, it is necessary to complete a “Declaration of Conformity” to indicate compliance to I.S. 813:2002.

8Stress the importance of regular servicing by a CORGI registered installer and that a comprehensive service should be carried out AT LEAST ONCE A YEAR.

In IE, servicing work must be carried out by a competent person.

Emphasise to the user that the boiler may stop working if the system pressure is lowered by draining radiators to decorate behind them. In particular, explain to the user how the domestic hot water temperature varies with flow rate. This is especially important when water is drawn off while the boiler is already running for central heating.

mini HE --- Installation & Servicing

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Contents Installation and servicing Mini HE --- Installation & Servicing Document Amendments Boiler Data GeneralPerformance Data --- Central Heating Domestic Hot WaterBenchmark Commissioning Checklist Details ContentsBoiler Clearances General Boiler Water ConnectionIntroduction GAS SafetyOptional Extra Kits Safe HandlingGAS Supply Flue Installation RequirementsSafe Handling of Substances Location of Boiler and Flue OutletWater Treatment Water Circulation SystemAIR Supply Additional PumpsRequirements Electrical SupplyMini HE C24, mini HE C28 Size of expansion vesselHydraulic Loss Remaining pump capacity Domestic HOT Water Requirements General Boiler Control InterlocksGeneral Boiler Water Circuit Diagram Installation Boiler Assembly InstallationPack a contents Installation UnpackingHardware pack contents Pack B contentsFitting the Flue System InstallationRefer to the following diagram for the model mini HE C32 Rear Flue AssemblyTwin Pipe Flue DuctWall Mounting Template rear flue Installation Cutting the Flue RingFitting the Extension Kits Roof Flue KIT CONTENTS/OPTIONS Installation Fitting the Optional Roof FlueFlue Arrangement Installation Flue Terminal PositionFlue over 3 meters long Assembling the Roof Flue KITFit the service valves, washers and tail pipes as shown Installation Fitting the Wall Mounting PlateMounting the Boiler ConnectionsCondensate Drain Safety Valve DrainLocate the gasket and flue turret on the top of the boiler Flues over 1 meter longFor external controls wiring see frame Incoming mains wiring detailElectrical Connections Pictorial Wiring Control pcb Installation Functional Flow DiagramElectrical Connections for a Combi Boiler External Electrical ControlsInstallation Initial Lighting To Adjust Pressures Maximum valve settingMinimum valve setting Commissioning and Testing Anti Cycling SettingElectrical Installation Gas InstallationGeneral Checks Handing Over Installation GAS ConversionServicing Schedule ServicingServicing Removal of Outer and Inner Casing Cleaning the Heat Exchanger Servicing Burner Removal and CleaningRE---ASSEMBLY Burner Pressure CheckRemove the fan by sliding it towards left see the arrow Servicing FAN and Venturi Removal and CleaningBurner Replacement Spark and Detection Electrode ReplacementBurner Injectors Replacement When replacing any componentFlue Temperature Probe Replacement Servicing Overheat Thermostat ReplacementTemperature Probe Replacement Removal of CH temperature probeExpansion Vessel Replacement GAS Valve ReplacementServicing FAN Replacement Venturi ReplacementAIR Pressure Switch Replacement Pump Replacement Complete Servicing Electronic CONTROL/IGNITION PCB Replacement Boiler mode setting CH Flow Switch Membrane Replacement Servicing CH Flow Switch ReplacementServicing DHW Flow Switch Replacement DHW Filter and Flow Limiter ReplacementFlow limiter Recuperator Replacement Servicing Primary Heat Exchanger ReplacementDiverter Valve Internal Parts Replacement Servicing Diverter Valve Actuator ReplacementCH Drain Cock Replacement Servicing DHW Heat Exchanger ReplacementCondensate Trap Replacement To clean the condensate trap and drainTo replace the condensate trap OFF Normal operationFinding Fault FindingFrom Fault finding Fault Finding Fault Refer back to page 52 of fault finding to continue Fault Finding From 075535 Burner mod. mini HE C28, mini HE C32Fan mod. mini HE C28, mini HE C32 17398422 23 Installer Notification Guidelines GAS Boiler Commissioning Checklist Service Interval Record Ideal boilers Technical TrainingInstaller 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

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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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