Before Installation; Installation Regulations; Installation Requirements; Transport And Storage - Heatrae Sadia HI-MAX INSTANT ID 5-60 Installation, Operation And Maintenance Manual

5. Before installation

5.1 Installation regulations

WARNING
Installation of the appliance must be carried
out by a competent person in accordance
with prevailing national regulations as listed
below.

Building Regulations

The Building Standards (Scotland)

The Building Regulations (Northern
Ireland)

I.E.E Electrical Regulations

UK Water Regulations

5.2 Installation requirements

Limitations
The HIU should not be used in association with any of
the following:

Situations where maintenance is likely to be
neglected or safety devices tampered with. Please
note that anti-tamper options are available on
request.

Water supplies that have either inadequate
pressure or where the supply may be intermittent.
(Minimum pressure 1.5 bar g at a fl ow rate of
25 l/min for the ID 5-80 model.

Situations where it is not possible to safely pipe
away any discharge from the safety valves.

In areas where the water consistently contains a
high proportion of solids, e.g. suspended matter
that could block the strainer,
fi ltration can be ensured.

In areas where the water supply contains chloride
levels that exceed 100mg/l.
For information or advice regarding any of the above
contact Technical Enquiries on: 0844 871 1535.

The Heatrae Sadia HI-MAX INSTANT HIU is
connected directly to the district heat source (ie
the energy centre). As such there are no safety
valves provided on the district heating side of the
unit. It is important to note that the maximum
working pressure of the district heating system
components within the HIU is 10 bar g and that the
safety valves fi tted within the energy centre MUST
be set to a pressure that protects all components
within the community heating system. The HIU
is provided with a safety valve on the apartment
heating side of the unit. This is set to lift at 3 bar g
and as such the unit is only suitable for apartment
heating systems with a maximum static height of
10 metres WG.

5.3 Transport and Storage

If the unit has to be stored prior to installation, it must
be in a secure area free from frost, excessive dampness
and humidity.

5.4 Choice of location

The Heatrae Sadia HI-MAX INSTANT HIU must be wall
mounted. Although location is not critical, the following
points should be considered:






5.5 Positioning and access

Access to the unit and all its components is gained
from the front.

provided around the unit as is practical.
event of a component failure, full access in front of
the unit is required for servicing.
Access to all isolation valves and controls is also
required for normal operation and servicing.
unless adequate
The HIU should be sited to ensure minimum dead
leg distances, particularly to the point of most
frequent use.
Avoid siting where extreme cold temperatures will
be experienced. All exposed pipework should be
insulated.
The discharge pipework from the heating system
safety valve should have a continuous fall.
Access to associated controls must be available for
the servicing and maintenance of the system.
Ensure that the wall that the Heatrae Sadia HI-MAX
INSTANT is mounted on is level and capable of
permanently supporting the weight when the unit
is full of water. (see Table 2 on page 6 for the unit
weights).
It is important that as much access is
WARNING

Warning: Water that is left standing in
a stainless steel plate heat exchanger
for long periods without draw off will
become de-oxygenated and potentially
corrode the plate material. If the unit is
to be left unused following installation
and commissioning, the water in the
unit should be drained or regularly
(quarterly) fl ushed through with fresh
mains water.
CAUTION
Ensure that the Heatrae Sadia HI-MAX
INSTANT is correctly positioned.
Consideration should be given to the access
and space requirements for operating and
servicing the unit.
In the
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