IDEAL INDUSTRIES HE24, HE18, HE12, HE15 manual Sealed System Requirements

Page 12

GENERAL

7 SEALED SYSTEM REQUIREMENTS - continued

4.Expansion Vessel

a.A diaphragm type expansion vessel must be connected to a point close to the inlet side of the pump, the connecting pipe being not less than 15 mm (1/2" nominal) size and not incorporating valves of any sort.

b.The vessel capacity must be adequate to accept the expansion of the system water when heated to 110oC (230oF).

c.The charge pressure must not be less than the static water head above the vessel. The pressure attained in the system when heated to 110o C (230o F) should be at least 0.35 bar (5 Ib/in2) less than the lift pressure of the safety valve.

For guidance on vessel sizing refer to the table in Frame 8.

For further details refer to BS. 5449, BS. 7074:1 and the British Gas Corporation publication 'Material and Installation Specifications for Domestic Central Heating and Hot Water'. For IE refer to the current edition of I.S.813.

5.Cylinder

The cylinder must be either of the indirect coil type or a direct cylinder fitted with an immersion calorifier which is suitable for operating on a gauge pressure of 0.35 bar (5 Ib/in2) in excess of the safety valve setting. Single feed indirect cylinders are not suitable for sealed systems.

6.Make-up Water

Provision must be made for replacing water loss from the system, either:

a.From a manually filled make-up vessel with a readily visible water level. The vessel should be mounted at least 150 mm (6") above the highest point of the system, and be connected through a non-return valve to the system, fitted at least 300 mm (12") below the make-up vessel on the return side of the domestic hot water cylinder or radiators.

or

b.Where access to a make-up vessel would be difficult by pre-pressurisation of the system. Refer to 'Filling', below.

7.Mains Connection

There must be no direct connection to the mains water supply or to the water storage tank supplying domestic water, even through a non-return valve, without the approval of the local water authority.

8.Filling

The system may be filled by one of the following methods:

a.Through a cistern, used for no other purposes, via a ball valve permanently connected directly to a service pipe and/or a cold water distributing pipe.

The static head available from the cistern should be adequate to provide the desired initial system design

pressure. The cold feed pipe from the cistern should include a non-return valve and a stop valve with an automatic air vent connected between them, the stop valve being located between the system and the automatic air vent. The stop valve may remain open during normal operation of the system if automatic water make-up is required.

b.Through a self-contained unit comprising a cistern, pressure booster pump (if required) and, if necessary, an automatic pressure reducing valve and flow restrictor. The cistern should be supplied through a temporary connection from a service pipe or cold water distributing pipe.

This unit may remain permanently connected to the heating system to provide limited automatic water make-up. Where the temporary connection is supplied from a service pipe or distributing pipe which also supplies other draw-off points at a lower level then a double check valve shall be installed upstream of the draw-off point.

c.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.

The following fittings shall form a permanent part of the system and shall be fitted in the order stated:

A stop valve complying with the requirements of

BS. 1010, Part 2 (the hose from the draw-off tap shall be connected to this fitting).

A test cock.

A double check valve of an approved type.

Thoroughly flush out the whole of the system with cold water, without the pump in position.

With the pump fitted, fill and vent the system until the pressure gauge registers 1.5 bar (21.5lb/in2). Examine for leaks.

Check the operation of the safety valve by manually raising the water pressure until the valve lifts. This should occur within ± 0.3 bar (± 4.3lb/in2.) of the preset lift pressure.

Release water from the system until the initial system design pressure is reached.

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

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

Refill and vent the system.

Adjust the initial pressure to the required value.

Sizing procedure for expansion vessels: The volume of the expansion vessel (litres) fitted to a sealed system shall not be less than that given by the table on the following page, multiplied by a factor of 0.8 (for flow temperatures of less than 83o C).

12

icos - Installation & Servicing

Image 12
Contents Installation and servicing Icos Installation & Servicing 15, Frame 11 Unpacking 15, Frame 12 Packaging Removal17, Frame 16 Wall Mounting Template Key to symbols GeneralBoiler Data Boiler Size HE 12, HE 15, HE 18, HE Icos General Boiler Water Connections Rear Flue onlySide Flue only Safety General IntroductionOperation Safe HandlingFlue Installation General Safe Handling of SubstancesLocation of Boiler GAS SupplyTerminal AIR SupplyWater Circulation System Boiler Control InterlocksSchematic Pipework and System Balancing General Open Vent System RequirementsBalancing Safety Valve Sealed System RequirementsGeneral Pressure GaugeSealed System Requirements Water Treatment Icos boiler range have an Aluminium alloy heat exchangerInstallation Boiler Assembly Exploded viewInstallation Unpacking Unpack and check the contents Pack a ContentsPack Contents Packaging RemovalInstallation Front and Bottom Panel Removal Determining the Flue Length and Flue Packs RequiredFlue Kits Flue Assembly Exploded View Wall Mounting TemplateInstallation Preparing the Wall Setting the Flue RearSetting the Flue Side Wall thicknesses of 210 to 435mmPack D Flue extension duct kit contents Flue Extension DuctsFitting the KIT General arrangementInstallation Condensate Drain Condensate Pipe Termination ConfigurationsFront View Condensate Pipe Termination Configurations Installation Mounting the Boiler Connecting the Flue to the BoilerFlues over 1 metre long Roof Flue KIT Contents / Options Flue OutletInstallation Flue Terminal Position Terminal Position Minimum DimensionFlat roof with structure Installation Flue Arrangement Installation Assembling the Roof Flue KIT Gaskets in the Boiler Flue Outletare Correctly FittedInstallation GAS Connection Electrical ConnectionsInstallation Internal Wiring Incoming mains wiring detailMains Connector Socket Supplied in hardware pack Fixed to boilerInstallation Pictorial Wiring Diagram Functional Flow Wiring DiagramInstallation External Electrical Controls Commissioning and TestingElectrical Installation GAS Installation Room ThermostatInstallation Initial Lighting FasciaInstallation General Checks Water Circulation System Knob Setting Flow TemperatureHanding Over Central HeatingServicing Servicing Schedule Boiler Front Panel RemovalBoiler Sealing PANEL/ Bottom Panel Removal Servicing FAN and Venturi Assembly Removal and Cleaning Burner Removal and CleaningServicing Cleaning the Condensate S Trap Cleaning the Heat ExchangerReassembly Reassemble the boiler in the following orderServicing Replacement of Components When replacing ANY componentGeneral Servicing FAN Replacement Burner ReplacementRefer to Frame Remove the boiler front and sealingServicing Ignition Electrode Replacement Flame Detection Electrode ReplacementServicing Spark Generator Replacement Burner Injector ReplacementGAS Control Valve Replacement Servicing Control BOX Replacement Mains Switch ReplacementTo change the user control only Servicing Overheat Thermostat Replacement Flue Thermistor ReplacementServicing Combustion Chamber Insulation Replacement Servicing Heat Exchanger Replacement Servicing Boiler Sealing Panel Seal Replacement Condensate S Trap ReplacementFault Finding Fault Finding Chart Main Menu Alternating H nAlternating H E GO to Frame Alternating H9 Alternating L9 Fault Finding Flame ErrorBoard Error 70 L.....FOverheat Error 73 L....8..... FAN ErrorFlow Thermistor Error 72 L.......AFlame Detection Short Circuit Error 76 H.....4...... Flue Thermistor ErrorPhase Reversal Error 75 H......FShort List of Parts GC Part No Description Qty Product NoBoiler Casing Assembly List of Parts Controls Assembly Burner AssemblyIcos Installation & Servicing Installer Notification Guidelines Page Page Technical Training Certified ProductUsers guide Minimum Clearances To light the boiler Refer to FrameOperation Knob Setting Flow Temperature Minimum Maximum 180 For short periodsFor longer periods Problem Solution Points for the Boiler User
Related manuals
Manual 52 pages 43.45 Kb

HE12, HE15, HE18, HE24 specifications

The IDEAL INDUSTRIES HE series, comprising the HE24, HE18, HE15, and HE12 models, represents a significant advancement in the field of electrical testing and measurement tools. These versatile testers stand out in professional environments for their high accuracy, user-friendly interfaces, and advanced features designed to enhance efficiency and reliability in electrical inspections.

The HE24 is the flagship model, boasting an extensive range of functionalities. It includes advanced digital multimeter capabilities, allowing for precise measurements of voltage, current, and resistance. Its True RMS feature ensures accurate readings, even with non-linear loads. The HE24 also incorporates advanced connectivity options, including Bluetooth technology, enabling users to transfer data wirelessly to smartphones or tablets for further analysis. The large, backlit display enhances visibility in various lighting conditions, making it an ideal tool for both indoor and outdoor use.

The HE18 model, while slightly more streamlined than the HE24, still offers robust capabilities. It features multiple testing modes, including continuity and diode testing, catering to a wide range of electrical tasks. The HE18 also utilizes a user-friendly interface, allowing technicians to navigate easily through various functions. Equipped with a protective rubber housing, this model is durable and built to withstand the rigors of frequent use on job sites.

The HE15 and HE12 models represent the compact, entry-level offerings in the HE series. Designed for the budget-conscious user, these models retain essential functionalities such as basic voltage and current measuring capabilities while prioritizing ease of use. The HE15 includes a simple LED indicator to signal when measurements are being taken, promoting straightforward operation. Additionally, the HE12 features a lightweight design, making it the perfect tool for on-the-go technicians.

All models in the IDEAL INDUSTRIES HE series are engineered with safety in mind, adhering to stringent international testing standards. They provide superior insulation resistance and a high degree of accuracy, mitigating the risks associated with electrical work. Furthermore, their IP-rated enclosures ensure protection against dust and moisture, enhancing longevity.

In conclusion, the IDEAL INDUSTRIES HE24, HE18, HE15, and HE12 series represent a comprehensive range of electrical testing tools that cater to professionals' varied needs. With their combination of advanced features, user-friendly designs, and safety compliance, these models are excellent choices for any electrical technician aiming for accuracy and efficiency in their work.