Control Of Water Pressure In The Installation; Mechanical Filter Operation; Control Of Current Hour Clock Indications - Viessmann AQUAHOME 11-N Installation And Operation Manual

D. Control of water pressure in the installation
E. Mechanical filter operation
F. Control of current hour clock indications
18
concerning the carrying out of the water
hardness measurement are included in
relevant water hardness tests (available at the
water softener's supplier or manufacturer).
Pay attention to the value of feed
water pressure during operation of the
water softener. If the pressure of feed
water drops below 1.4 bar, determine
the cause of the drop and remove it. If
the pressure of feed water exceeds
8.0 bars, install a relevant pressure
reducer in the water feed system.
In order to secure the proper
operation of the water softener, the
mechanical filter, supplied together
with the device, must be installed on
the raw water pipework (fig. 2). The
mechanical filter is designed to
protect the control head as well as
the medium against mechanical
contamination. Observation of the
filter cartridge's (water cleaning
medium) contamination is carried out
by visual inspection. An additional
element enabling control of the filter
condition is monitoring of water
pressure upstream and downstream
of the filter. In case of using a filter
with a replaceable cartridge, provided
that the cartridge is worn
(contaminated), unscrew the filter
sump holding the cartridge, replace it
with a new filter cartridge and tighten
the sump with the new filter cartridge
in the filter assembly. Please bear in
mind to cut off water upstream of the
filter before carrying out the filter
cartridge replacement.
Please bear in mind that the control
program (including the conditions of
the automatic REGENERATION
process) was adopted for the
pressure value of 1.4 to 8.0 bars.
Avoid water pressure hammers
during the device operation.

Important notice!
The filter cartridge must not be
rinsed, cleaned or regenerated in any
manner.
In case of using a filter with a
backwash feature, follow the user
manual provided together with the
filter.
Operating a filter with an overused
filter cartridge may undermine the
water quality and may cause damage
to the water softener.
Control of the time indications shown
on the display screen of the water
softener should be carried out at least
once every two weeks. It will prevent
any movements in time of
commencing the regeneration
process. To eliminate any possible
difference between current time and
the time displayed by the device,
follow the guidelines provided on
page 9(Programming of the control
panel).