Issue 3
13/01/21
19
There is a brownish
tint to the mains
pressure hot water.
This could be a symptom with the heat exchanger coil leaking inside
the thermal store. An installer should have this tested. If this is the
case, pay attention to the Feed & Expansion Tank as the pressure
within the store will increase causing the tank to overflow continually.
MULTI
flow
is set at
70°C but the mains
pressure
temperature drops
quickly when running
a tap (e.g. bath)
1)
If an inhibitor has been installed, check with the installer that it
has been installed at the correct proportion and checked at
appropriate frequencies.
2)
The in-line strainer in the cold mains supply to the unit may be
choked and require cleaning.
3)
Carefully
check the hot water temperature flow into the mixing
valve. If it is very hot, it may be that the valve needs to be
checked / replaced. A competent installer should check the
mixing valve for blockages within the internal filter.
4)
If the DHW Coil is giving an initial heat transfer and then fading,
this could be a sign of scale build up inside the Heat Exchanger
Coil, especially if in a known hard water area. A competent
installer would need to descale the DHW coil and check/fit
descaling equipment.
Warranty
McDonald Water Storage guarantee the MULTI
flow
shell against material defect or
manufacturing fault for a period of 5 years from the date of delivery. Components
are guaranteed for 2 years.
The above product guarantee is valid provided:
•
It has been installed by a competent installer in accordance with the
instructions detailed in our installation manual and all relevant Codes of
Practice and Regulations in force at the time of installation.
•
No factory fitted parts have been removed for unauthorised repair or
replacement and the product has not been modified
–
other than by
McDonald Water Storage.
•
Any replacement parts should be purchased from McDonald Water Storage.
•
The hot water store has only been used for the storage of potable water
supplied from the public mains (Max
–
200mg/litre chloride). And treated as
detailed in the installation instructions.
