Mamiya C28, C32, C24 manual Electrical Supply, Requirements

Page 10

GENERAL

Domestic Hot Water

In hard water areas where mains water can exceed 200ppm Total Hardness (as defined by BS 7593:2006 Table 2) a scale reducing device should be fitted into the boiler cold supply within the requirements of the local water company. The use of artificially softened water, however, is NOT permitted.

Caradon Ideal Limited recommend the use of Fernox Qantomat, Sentinel Combiguard and Calmag CalPhos I scale reducing devices, which must be used in accordance with the manufacturers’ instructions.

For further information contact:

3ELECTRICAL SUPPLY

Warning. This appliance must be efficiently earthed.

Wiring external to the appliance MUST be in accordance with the current I.E.E. (BS.7671) Wiring Regulations and any local regulations which apply. For Ireland reference should be made to the current ETCI rules for electrical installations.

4SEALED SYSTEM REQUIREMENTS Central Heating

Note. mini HE boilers are suitable for fully pumped pressurised sealed systems only.

REQUIREMENTS

1General

The installation must comply with the requirements of BS. 6798 and BS. 5449.

Fernox

Calmag Ltd.

Cookson Electronics

Unit 4---6 Crown Works

Forsyth Road

Bradford Road

Sheerwater

Sandbeds

Woking

Keighley

Surrey

West Yorkshire

GU21 5RZ

BD20 5LN

+44 (0) 1799 550811

+44 (0) 1535 210320

Salamander (Eng) Ltd

Sentinel Performance

Reddicap Trading Estate

Solutions

Sutton Coldfield

The Heath Business &

West Midlands

Technical Park

B75 7BY

Runcorn

 

Cheshire

 

WA7 4QX

+44 (0) 121 378 0952

+44 (0) 800 389 4670

The point of connection to the mains should be readily accessible and adjacent to the boiler, except for bathroom installations where the point of connection to the mains MUST be situated outside of the bathroom.

Note. Where a room sealed appliance is installed in a room containing a bath or shower then the appliance and any electrical switch or appliance control utilising mains electricity should be so situated that it cannot be touched by a person using the bath or shower.

4Filling the system

Fill the system through a temporary hose connection from a draw ---off tap supplied from a service pipe under mains pressure. Where the mains pressure is excessive a pressure reducing valve shall be used to facilitate filling.

When installing the filling connection provided with the boiler an additional WRAS approved valve must be fitted to the mains water supply upstream of the double check valve to fully comply the Water Regulations

2Flow Temperature

The installation should be designed to work with flow temperatures of up to 90 ûC.

3Working Pressure

All components of the system must be suitable for a working pressure of 3 bar (45 lb/in2) and temperature of 110 ûC. Extra care should be taken in making all connections so that the risk of leakage is minimised.

Stop valve

Hose unions

 

CH return

 

Temporary hose

(disconnect

 

after filling)

 

Additional stop valve

Mains

Water

Supply

Double check valve assembly

Note direction of flow

The following components are incorporated within the appliance:

a. Circulating pump.

b.Safety valve; with a non---adjustable pre---set lift pressure of 3 bar (45 lb/in2).

c. Pressure gauge; covering a range of 0---4 bar.

d1. 6 litre expansion vessel; with an initial charge pressure of 0.7 bar (10.5 lb/in2) for mini HE C24 and mini HE C28.

d2. 7 litre expansion vessel; with an initial charge pressure of 1.0 bar (15 lb/in2) for mini HE C32.

For further details refer to BS.5449:1 and the British Gas Corporation publication ’Specifications for Domestic Central Heating and Hot Water’.

System filling and make---up

Proceed with the following:

FThoroughly flush out the whole of the system with cold water before fitting the boiler.

FFill and vent the system until the pressure gauge registers 1.5 bar (22 lb/in2). Examine for leaks.

FRelease water from the system until a pressure of 1 bar (15 lb/in2) is reached.

To avoid getting debris on the valve seat, do not use the safety valve to do this.

FLight the boiler and heat the system to the maximum working temperature. Examine for leaks.

FTurn off the boiler and drain the system while still hot.

FRefill and vent the system.

FRe---pressurise the system to the desired charge pressure (see Table 5).

10

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 RequirementsSize of expansion vessel Mini HE C24, mini HE C28Hydraulic 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 Ring Installation Cutting the FlueFitting 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 longIncoming mains wiring detail For external controls wiring see frameElectrical Connections Pictorial Wiring Installation Functional Flow Diagram Control pcbExternal Electrical Controls Electrical Connections for a Combi BoilerInstallation Initial Lighting Maximum valve setting To Adjust PressuresMinimum 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 ReplacementVenturi Replacement Servicing FAN 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 ReplacementDHW Filter and Flow Limiter Replacement Servicing DHW Flow Switch 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 ReplacementTo clean the condensate trap and drain Condensate Trap ReplacementTo 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 Water hot or Installer the contact fire not doesCorrectly Ignition at attempt Cleaning MaintenanceGAS of Escape Boiler the Light to Lights DiagnosticClearances 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.

The Mamiya C32, introduced in the early 1970s, is renowned for its precision engineering and versatility. This model features interchangeable lenses, allowing photographers to switch between different focal lengths for creative flexibility. The camera supports 120 and 220 film formats, enabling higher film capacities for extended shooting sessions. An essential feature of the C32 is its built-in light meter, which enhances exposure accuracy by providing real-time readings. The camera's bright waist-level finder offers excellent viewing comfort and composition aid, attracting those who appreciate a more hands-on shooting experience.

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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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