Heatrae Sadia MULTIPOINT 75 User manual

Unvented water heating
Multipoint 75 / 100
95 900 871 Issue 1

Introduction 03
Unvented water heating
Specification Advice Tel [phone] Fax [phone] E-mail [email protected]
Mains pressure and high flow rates at all hot taps
Balanced hot/cold water supplies
Ideal for multi-basin installations
Flexible siting - no need for cold water cistern
Can be used with standardtaps
The demand for unvented systems continues to increase as their benefits are recognised
by specifiers, installers and end users. The new Multipoint 75 and 100 litre units offer
unvented water heater performance and are quicker and easier to install.
Based on the highly successful Multipoint range, the new 75 and 100 litre models are
designed to significantly reduce installation time. These wall mounted units are supplied
factory-assembled with all necessary valves and controls pre-installed ready for
connection to the mains services resulting in a much easier, faster and neater installation.

04 Features and benefits
Multipoint 75/100
Multipoint 75/100 are ideal for commercial applications such as
cloakrooms, kitchens or washrooms, where a single heater is
required to service multiple draw-offs. Both products may also
be used for single point showering and are available with 6kW
rating (2 x 3kW elements) for use in locations where faster hot
water recovery is required.*
As with all unvented units above 15 litres, it is a Building
Regulation requirement that installers are competent to install
Multipoint 75 and 100 litre units. This normally means having
successfully completed a course in unvented systems.
For details on training courses call 0845 600 7402.
Capacity Basins
75 5 to 8
100 8 to 10
Multipoint 75/100 selection matrix
N.B. Figures are for guidance only, the Heatrae Sadia Specifier Advice team should be
contacted to discuss requirements for specific sites.
75 and 100 litre capacities
Choice of 3.0kW or 6.0kW rating
Factory-fitted temperature and pressure relief valves
Twin heavy gauge copper inner containers
Replaceable long life alloy sheathed elements
Adjustable thermostats 5°C to 75°C max.
Suitable replacement for Cistern-type water heaters where
improved water flow required
CFC/HCFC free (ODP zero) insulation GWP 3.1 (Global
Warming Potential)
Element ‘On’ indicator
No anodes to inspect or replace
Suitable for use with any standardmixers or taps
Fitted with 1 metre of 3-core cable
Comprehensive installation instructions
BEAB and kiwa approved
Five year on-site parts and labour inner container guarantee
Items supplied factoryfitted to all units
Expansion vessel
Pressure relief (expansion) valve
Temperature & pressure relief valves
Items supplied loose
Combined pressure-reducing valve with built-in strainer
Tundish
Mounting brackets
*Depending on demand, increased effective capacity and levels of user protection can
be achieved by the use of Heatrae Sadia's thermostatic blending valve Pack U3 or U7
(See page 6).

1Expansion vessel
2Pressure relief valve
3Non return valve
4Thermostats
5Safety cut-outs
6Element plate assemblies
7Element 'On' neon
8Inlet
9Discharge
10 Outlet
11 Cable entry
12 Temperature and pressure relief valves
12
3
4
5
6
67
8
9
12
12
10
11

Water expands by up to 4% when heated (See Fig. 1). This
means that the design of the water heater and the installation in
which it is used are critical. Conventional (vented) and unvented
systems allow for expansion in different ways.
With unvented systems, thereareno cisterntanks or open
outlets to accommodate expansion. All systems above 15 litre,
and some systems of 15 litre or less, employ an expansion vessel
or an internal air-gap to accommodate expansion.
With larger systems (above 15 litre), expansion is
accommodated either by a separate expansion vessel or an
internal air-gap. Multipoint 75 and 100 litre units use an expansion
vessel which is supplied factory fitted within the casing. They are
supplied complete with all the necessary components and
controls to provide a safe and efficient method of providing
stored mains pressurehot water.
Building Regulations
Direct connection to the cold mains supply has been permitted in
the UK since 1987. All units above 15 litre must be installed to
meet the requirements of the Building Regulations. It is a legal
requirement that the local Building Control Officer be notified of
any proposed installation of unvented water heating systems over
15 litre capacity. Products up to 500 litre and 45kW must be
approved by a recognised body such as the British Board of
Agrément (BBA) and BEAB and be fitted by an installer who has
successfully completed a recognised course in the installation of
unvented heating systems such as CITB.
Requirements call for an expansion space (internal or external),
safety devices to prevent the stored water exceeding 99°C, and
pipework to convey discharged hot water safely away from the
safety devices.
10 20 30 40 50 60 70 80 90 100
4
3
2
1
0
4.34
TEMPERATURE RISE OC
EXPANSION %
1.2
FIG. 1
Blended water
to outlets
Pack U3 or U7
blending valve
Outlet taps Hot outlet Cold water in
Balanced
cold water
supply
Heater
Thermostatic blending valves
06 Accessory selection
Multipoint 75/100 ACCESSORIES
Pack U3 and U7 for use with all Multipoints;
PACK U3 TMV2
Connection 15mm compression.
Allows water to be safely stored above 60°C
Precisely controls outlet water temperature
(range 35°C to 60°C)
Lockable control knob
Fail-safe shutdown
Incorporates check valves to prevent cross contamination
Operating pressure 0.2 bar to 6.0 bar
PACK U7 TMV3
Connection 15mm compression.
Fully approved under the TMV3 scheme to the DO8
specification
Allows water to be safely stored above 60°C
Precisely controls outlet water temperature
(range 38°C to 46°C)
Unique adjuster key to prevent unauthorised
temperature adjustment
Fail-safe shutdown
Incorporates check valves to prevent cross contamination
Operating pressure 0.2 bar to 5.0 bar
Thermostatic blending valves allow water to be stored at high temperatures and
blended with cold water to a preset outlet temperature. This provides over-temperature
protection, and is ideal for the control of Legionellae and the extension of
system capacities.
TMV Installation
Technical Support
Heatrae Sadia offers a dedicated Specifier Advice line to provide information and
advice on specification and installation. This is supported by a fully-trained national
sales team, all of whom are qualified to provide further guidance and support locally.

565
729
430
79
A
D
C
B
Multipoint
Capacities 75 and 100 litre.
Rating 3.0kW @ 240V (2 x 1.5 kW), (2.8kW @ 230V (2 x 1.4 kW)). 6.0kW @ 240V (2 x
3.0 kW), (5.6kW @ 230V (2 x 2.8 kW))
Outer casing White plastic top and base mouldings with steel centre section finished
in white stove enamel.
Thermal insulation CFC/HCFC free (ODP zero) GWP 3.1 (Global Warming Potential)
flame-retardant expanded polyurethane.
Water container 2 x Heavy gauge copper inner containers.
Type tested to 20 bar (290 psi)
Heat unit Replaceable Superloy 825 alloy sheathed rod-type elements.
Thermostat Capillary thermostats, adjustable from 5°C to 75°C.
Safety features Manually re-settable thermal cut-outs.
Factory-fitted temperature and pressure relief valves set to operate at 7 bar and 90°C.
Anode Not required.
Approvals BEAB and kiwa approved to UK water supply regulations.
Manufactured in the UK in a BS EN ISO 9001:2000 registered factory.
Electrical The unit must be permanently connected
to the electrical supply through a double-pole linked
switch with minimum breaking capacity suitable for
the loading. Must conform to current IEE wiring
regulations.
Specification
Multipoint is covered by the Heatrae Sadia on-site parts and labour guarantee.
Multipoint inner container is guaranteed for a period of five years and its immersion
heater and thermal control for a period of two years from the date of purchase against
faulty manufactureand materials provided that:
•Has been correctly installed as per the instructions contained in the instruction manual
and all relevant codes of practice and regulations in force at the time of installation.
•Has not been modified in any way,other than by Heatrae Sadia Heating.
•Has been regularly maintained in accordance with the instructions contained in the
instruction manual.
•Has not been damaged by frost or due to scale.
•Has only be used with potable water.
•Has not been tampered with or been subjected to misuse or neglect.
•Registration card has been completed by the user and returned to Heatrae Sadia
within 60 days of installation together with the proof of purchase.
•Has been installed in the United Kingdom.
•The guarantee is transferable.
•The guarantee does not affect your statutoryrights.
The unit is not guaranteed against damage by frost. The Multipoint immersion heater
and thermal controls are guaranteed for a period of two years, from the date of
purchase, with the exception of damage due to excessive scaling. Evidence of
purchase and date of supply must be submitted. The guarantee will not be
transferable. This guarantee does not affect your statutory rights.
Guarantee
Must be installed by a competent person in accordance with local Regulations.
England and Wales - Building Regulations G3, Scotland - Technical Standards P3,
N. Ireland - Building Regulations P5.
Fixing Mounting brackets supplied loose. Must be mounted in the vertical position
with inlet/outlet at the bottom. Temperature and pressure relief valves factory fitted to
the top of the heater.
Plumbing Connections 15mm copper tube tails. Minimum water pressure 0.8 bar (12
psi). Discharge from tundish 22mm compression
Tundish Multipoint 75 & 100 units are supplied with a tundish. Inlet – 1⁄2"BSP male.
Outlet – 3⁄4"BSP female.
Service valve 15mm compression.
Safety valve discharge Temperatureand pressure relief valve and expansion valve
must be plumbed to discharge in a safe visible manner. (Tundish supplied).
Installation
Ordering guide
Model Rating Product code
@240V
kW
Multipoint 75 395:050:170
Multipoint 75 6 95:050:171
Multipoint 100 3 95:050:172
Multipoint 100 695:050:173
Pack U3 (TMV2) 95:970:354
Pack U7 (TMV3) 95:970:360
Dimensions and capacities
Diagram | Dimensions | Specification | Installation | Guarantee | Ordering guide 07
Specification Advice Tel [phone] Fax [phone] E-mail [email protected]
Model Capacity A B C D
litre mm mm mm mm
Multipoint 75 75 1055 911 824 843
Multipoint 100 100 1213 1069 982 1001

National service network
Heatrae Sadia products are inherently reliable and are
designed to meet the demanding needs of all users.
Anationwide network of experienced engineers is available
to provide fast and efficient on-site service support.
In addition, spareparts for the complete range of products
arereadily available through a wide variety of stockists.
Specification T: 01603 420220 F: 01603 420229 E: [email protected]
Sales T: 01603 420110 F: 01603 420149 E: [email protected]
Service T:01603 420330 F: 01603 420349 E: [email protected]
Web www.heatraesadia.com
Heatrae Sadia Heating Hurricane Way Norwich Norfolk NR6 6EA
Heatrae Sadia Heating may introduce modifications to their products from time to time.
Consequently, the details given in this brochure are subject to alteration without notice.
95 900 871 Issue 1 © Heatrae Sadia Heating. March 2006.
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