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Cold water supply
The unit has been designed for
use with a permanent cold water
supply. The cold water pipework
must conform to local and national
codes and regulations. The
installation must be carried out by
I
suitably qualified personnel.
The unit has been designed to
withstand the water pressure
expected in normal use when
connected to the cold water supply
(limits shown in table 4 below). This
includes the supplied inlet water
flexible hose(s) if used.
Fig 3 on page 15 previously shows
typical water supply connections
for both single and double cylinder
units.
The table on page 30 details how
to select the correct cylinder for
the model of unit and the water
conductivity range.
Virtuoso VE electrode boiler steam humidifiers
are capable of operating with a wide range of
"raw mains" quality water supplies. The water
supply should be within the following limits:-
Water Supply Condition
Hardness
Conductivity
pH
Silica
Pressure
Temperature
Table 1a - Water supply conditions
Additionally, if stainless steel electrodes are
used, the chlorine level must not exceed
170ppm.
Page No 16 of 80
Vapac, Virtuoso VE Humidifier, Installation Manual, EN 2024-01, D301474 Iss 0
Limits
50 - 500 ppm
80 - 1000 μS/cm
7.3 - 8.0
0
1.5 - 8.0 bar
150000 - 800000 pascals
1 - 30°C
Model
VE05-1P
VE09-1P/-3P
VE18-3P
VE30-3P
VE45-3P
VE60-3P
VE90-3P
Table 1b - Water supply rates
Water supply do's
• Do install a stop valve / shut off valve, double
check valve / backflow prevention device and
a strainer close to the unit.
• It is recommended that a water hammer
arrestor is installed in the cold water supply
line to absorb hydraulic shock and minimise
water hammer when the humidifier fill valve
closes. Water hammer is a phenomenon that
can occur in any piping system where valves
are used to control the flow of liquids.
• Do provide a water supply with sufficient
pressure and the correct pipe size to ensure
that an adequate flow rate is provided to all
units connected to the system.
• Do ensure the water supply pipework is
fastened with suitable bracketry.
• Do ensure metal cold water supply pipework
is earthed electrically close to the unit.
Water supply don'ts
• Don't use a wrench or similar tool to tighten
the water supply connection. The nylon nut
and rubber washer provided should only
require tightening by hand to effect a seal.
• Don't use additives such as corrosion
inhibitors and disinfectants, since these
additives may endanger health and affect
proper operation.
• Don't add salt or solutions to the supply
water.
Water supply rate
(l/min)
1.20
1.20
1.20
2.50
2.50
5.00
5.00
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