Elson Zircon 190 S Ind, Инструкция по установке и обслуживанию

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Important
• After servicing, complete the relevant Service
Interval Record section of the Benchmark Checklist
located on page 21 of this document.
• Servicing should only be carried out by competent
persons in the installation and maintenance of
unvented water heating systems.
• Any spare parts used MUST be authorised
parts.
• Disconnect the electrical supply before removing
any electrical equipment covers.
• NEVER bypass any thermal controls or operate
system without the necessary safety valves.
• Water contained in the cylinder may be very
hot, especially following a thermal control failure.
Caution must be taken when drawing water from
the unit.
Fault Finding & Servicing
Table 04: Fault Finding Chart
Fault Possible Cause Remedy
No hot water flow
Mains supply off Check and open stop cock
Strainer blocked Turn off water supply. Remove strainer and
clean
Cold water combination valve incorrectly
fitted
Check and refit as required
Water from hot tap
is cold
Direct immersion heater not switched on Check and switch on
Direct immersion heater thermal cut-out
has operated
Check, reset by pushing button on thermostat
Indirect programmer set to central heat-
ing only
Check, set to domestic hot water programme
Indirect boiler not working Check boiler operation. If fault is suspected
consult boiler manufacturer’s instructions
Indirect thermal cut-out has operated Check, reset by pushing button on thermostat
Check operation of indirect thermostat
Indirect motorised valve not connected
correctly
Check wiring and/or plumbing connections to
motorised valve
Water discharges
from expansion
valve
INTERMITTENTLY
Expansion vessel charge pressure has
reduced below 3.5 bar, or set to high
See maintenance section for re-charging of
expansion vessel procedure
CONTINUALLY
Cold water combination valve pressure
reducer not working correctly.
Expansion valve seat damaged
Check pressure from cold water combination
valve. If greater than 3.5 bar replace pressure
reducing valve
Remove expansion valve cartridge, check
condition of seat. If necessary fit new expansion
valve
Water discharges
from T&P relief
valve
Thermal control failure
NOTE: water will be very hot
Switch off power to immersion heater(s) and
shut down boiler
DO NOT turn off water supply. When discharge
stops check all thermal controls, replace if faulty
Milky water
Oxygenated water Water from a pressurised system releases
oxygen bubbles when flowing. The milkiness will
disappear after a short while
Spare Parts
A full range of spare parts are available for the
cylinder range (Table 05 Page 18). Refer to the
technical data label on the unit to identify the model
installed and ensure the correct part is ordered. You
will need to quote the serial number, which is printed
on the data label.
Fault Finding
The fault finding chart (Table 04 below) will enable
operational faults to be identified and their possible
causes rectified. Any work carried out on the unvented
water heater and its associated controls MUST be
carried out by a competent installer for unvented water
heating systems. In case of doubt contact service
support (see contact details on back page).
Warning
DO NOT TAMPER WITH ANY OF THE SAFETY VALVES
OR CONTROLS SUPPLIED WITH THE CYLINDER AS
THIS WILL INVALIDATE ANY GUARANTEE.