Manual Elson Zircon (page 16 of 24) (English)

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WARNINGS

IF WATER DISCHARGES FROM THE

TEMPERATURE/PRESSURE RELIEF VALVE ON

CYLINDER SHUT DOWN THE BOILER. DO NOT

TURN OFF ANY WATER SUPPLY. CONTACT

A COMPETENT INSTALLER FOR UNVENTED

WATER HEATERS TO CHECK THE SYSTEM.

DO NOT TAMPER WITH ANY OF THE SAFETY

VALVES FITTED TO THE SYSTEM. IF A FAULT

IS SUSPECTED CONTACT A COMPETENT

INSTALLER.

BENCHMARK

The cylinder is covered by the Benchmark Scheme

which aims to improve the standards of installation

and commissioning of domestic heating and

hot water systems in the UK and to encourage

regular servicing to optimise safety, efciency and

performance.

Benchmark is managed and promoted by the

Heating and Hotwater Industry Council. For more

information visit www.centralheating.co.uk.

Please ensure that the installer has fully completed

the Benchmark Checklist (Page 22 & 23) of this

manual and that you have signed it to say that

you have received a full and clear explanation of

its operation. The installer is legally required to

complete a commissioning checklist as a means of

complying with the appropriate Building Regulations

(England & Wales).

All installations must be notied to Local Area

Building Control either directly or through a

Competent Persons Scheme. A Building Regulations

Compliance Certicate will then be issued to the

customer who should, on receipt, write the

Notication Number on the Benchmark Checklist.

This product should be serviced regularly to optimise

its safety, efciency and performance. The service

engineer should complete the relevant Service

Record on the Benchmark Checklist after each

service.

The Benchmark Checklist may be required in the

event of any warranty work and as supporting

documentation relating to home improvements

in the optional documents section of the Home

Improvements Pack.

FLOW PERFORMANCE

When initially opening hot outlets a small surge in

ow may be noticed as pressures stabilise. This is

quite normal with unvented systems. In some areas

cloudiness may be noticed in the hot water. This is

due to aeration of the water, is quite normal and will

quickly clear.

TEMPERATURE CONTROLS – DIRECT UNITS

IMMERSION HEATER(S)

A combined adjustable thermostat and thermal

cut-out is provided for each immersion heater. The

thermostat is factory set to give a water storage

temperature of approx. 55°C to 60°C. Access to the

thermostat can be made by opening the immersion

heater cover - DISCONNECT THE ELECTRICAL

SUPPLY BEFORE OPENING THE COVER(S).

Temperature adjustment is made by inserting a at

bladed screwdriver in the slot on the adjustment

disc on top of the thermostat and rotating. The

adjustment range 1 to 5 represents a temperature

range of 12°C to 68°C (60°C will be approximately

position 4). If in any doubt contact a competent

electrician.

DO NOT bypass the thermal cut-out(s) in any

circumstances.

TEMPERATURE CONTROLS - INDIRECT UNITS

The cylinder units are tted with an indirect

thermostat and thermal cut-out. These controls must

be wired in series with the 2 port motorised zone

valve supplied to interrupt the ow of primary water

around the heat exchanger coil when the control

temperature has been reached. The controls are

located within the lower terminal housing along with

the immersion heater thermostat. The thermostat

is factory set to give a water storage temperature

of approx. 55°C to 60°C. Access to the thermostat

can be made by opening the terminal housing

cover - DISCONNECT THE ELECTRICAL SUPPLY

BEFORE OPENING THE COVER. Temperature

adjustment is made by inserting a at bladed

screwdriver in the adjustment knob and rotating. The

minimum thermostat setting is 12°C. The adjustment

range 1 to 5 represents a temperature range of 12°C

to 68°C (60°C will be approximately position 4). If in

any doubt contact a competent electrician.

An immersion heater is also provided for use should

the indirect heat source be shut down for any purpose.

The immersion heater control temperature is set

using the immersion heater thermostat.

DO NOT bypass the thermal cut-out(s) in any

circumstances.

OPERATIONAL FAULTS

Operational faults and their possible causes are

detailed in the Fault Finding section of this book. It

is recommended that faults should be checked by a

competent installer.

The air volume within the expansion vessel will

periodically require recharging to ensure expanded

water is accommodated within the unit. A discharge

of water INTERMITTENTLY from the expansion

valve will indicate the air volume has reduced to

a point where it can no longer accommodate the

expansion.

USER INSTRUCTIONS

Hi. My cylinder is getting too hot. Boiler continues to run for hot water when programmer is off for heating and hot water. Diverter valve is working so what else could be causing this? Submitted on 14-1-2023 at 11:28
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Elson Zircon Manual

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