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1.1 IMPORTANT POINTS
1.1.1
The Multipoint unvented water heater is factory fitted with a
Temperature/Pressure Relief Valve. The factory fitted Temperature/
Pressure Relief Valve must not be removed, blocked or restricted in
any way. FAILURE TO PROVIDE ADEQUATE TEMPERATURE AND
PRESSURE RELIEF WILL INVALIDATE ANY GUARANTEE AND
LEAD TO A DANGEROUS INSTALLATION
1.1.2 Expansion must be accommodated within the system. Use of the
Expansion Vessel and Check Valve provided in the Installation Kit will
fulfill this function.
1.1.3 The installation of this water heater is covered by Building Regulation
G3. In order to fulfill the requirements of this Regulation, the heater
should be installed in accordance with these instructions by a
competent installer (i.e. an installer trained in the installation of
unvented water heating systems). All the control and safety valves
provided in the Installation Kit must be used and plumbed in
accordance with Figure 01.
1.1.4 The installation must be carried out in accordance with the relevant
requirements of:
• The appropriate Building Regulations either The Building
Regulations, The Building Regulations (Scotland) or Building
Regulations (Northern Ireland).
• The Water Fittings Regulations or Water Byelaws in Scotland.
WARNING: IF WATER FLOWS FROM THE PRESSURE RELIEF VALVE
OR TEMPERATURE/PRESSURE RELIEF VALVE, THE ELECTRICITY
SUPPLY MUST BE SWITCHED OFF IMMEDIATELY. CONTACT THE
HEATRAE SADIA SERVICE TEAM (Tel: 0844 8711535) OR AN
APPROVED INSTALLER.
1.2 PACK CONTENTS
Before commencing installation check that all the following components
have been supplied in the Installation Kit :
• Expansion Vessel ¾” BSP male, precharge pressure 0.32 MPa
(3.5 bar) c/w wall mounting bracket
• Combined Pressure Reducing Valve/Strainer ½” BSP female,
factory set at 0.35 MPa (3.5 bar)
• Single Check Valve 15mm x 15mm compression
• Pressure (expansion) Relief Valve ½” BSP male inlet, ½” BSP
female discharge factory set at 0.6 MPa (6 bar).
• Tundish ½” BSP male inlet, ¾” BSP female outlet
• Wall mounting bracket set
• Self adhesive Levelling Feet (2 off)
• Moulded plastic spacer