Technical Specifications; Important Installation Points - Heatrae Sadia MULTIPOINT 10 Installation And User Instructions Manual

Please read and understand these instructions prior to installing your Multipoint
unvented water heater. Particular attention should be paid to the section headed
IMPORTANT INSTALLATION POINTS. Following installation and commission-
ing the operation of the heater should be explained to the customer and these instruc-
tions left with them for future reference.

TECHNICAL SPECIFICATIONS

Electrical rating ................................................... 2.75/3kW 230/240V
or .................................................................... 4.1/4.5kW 230/240V
Capacities ............................................................ 10 or 15 litres
Weight (full) ........................................................ 10 litre - 16.9kg
............................................................................. 15 litre - 23.8kg
Rated pressure ..................................................... 6 bar
Minimum recommended supply pressure ........... 0.8 bar
Temperature/Pressure Relief Valve ..................... 90

1.0 IMPORTANT INSTALLATION POINTS

1.1 The Multipoint unvented water heater MUST be fitted with a Pressure Relief
Valve. The factory fitted Temperature/Pressure Relief Valve can fulfill this
function. FAILURE TO PROVIDE ADEQUATE PRESSURE RELIEF
WILL INVALIDATE ANY GUARANTEE AND LEAD TO A DANGEROUS
INSTALLATION
1.2 Expansion can take place within the cold water supply PROVIDED THAT
BOTH :
(a) Backflow in the main is not prevented by any stopvalve with loose jumper,
check valve, pressure reducing valve or similar, AND
(b) Hot water expansion does not enter a branch to a cold water outlet (see
Diagram 1 for expansion pipe lengths).
N.B. Both the above conditions must be met. Additionally expansion within
the cold water supply will not be possible if the static supply pressure exceeds
4.1 bar (60p.s.i.).
1.3 If any of the conditions in 1.2 above cannot be met expansion must be
accomodated using an Expansion Vessel. To ensure all expansion takes place in
the vessel a Check Valve must also be fitted together with a Pressure (expansion)
Relief Valve (see Diagram 2). Use Accessory Pack U2 code no. 95 970 351.
1.4 If the static supply pressure exceeds 4.1 bar (60p.s.i.) a Pressure Reducing Valve
must be fitted to the cold main supply. If a Pressure Reducing Valve is used an
Expansion Vessel must also be used (see Diagram 3). Use Accesory Packs U1 and
U2 code no.'s 95 970 352 and 95 970 351.
2
C/7 bar
o