EuroStar
Model
Minimum FREE Area opening ‘A’
50/90 145CM
2
(22in
2
)
BOILER COMPARTMENT VENTILATED FROM OUTSIDE
9
FIG. 7 VENTILATION FOR ROOM
SEALED BALANCED FLUE
BOILERS IN A COMPARTMENT
BOILER COMPARTMENT
VENTILATED FROM ADJOINING ROOM
“A”=
Min. FREE
Area of Opening
(See table above)
NOTE:
Ensure this
adjoining room
has an adequate
air supply.
FIXING OF STRAIN
RELIEF BUSHES
Electrical Supply
230V 1 Phase 50Hz (Fused 5 Amp)
Note: THIS APPLIANCE MUST BE EARTHED
All electrical wiring must be carried out by a qualified
electrician in accordance with current I.E.E. Regulations
and any Local Regulations that may apply.
The 230v - 50Hz electrical supply must be fused by a
double pole switch with a contact separation of at least
3mm in both poles, and shuttered socket (both complying
with the requirements of BS 1363) adjacent to the boiler.
Fuse supply at 5A. The minimum requirement for the
power supply cable should be a PVC sheathed flexible
cord, at least 0.75mm
2
(24x0,2mm) (code designation
H05 VV-F or H05 VVH2-F) as specified in table
16 of BS 6500.
This appliance MUST be earthed and the electrical
supply earth cable must be of a greater length than the
current carrying conductor cables (ie live and neutral
supply cables).
All external cables entering the control box must be
secured in position by strain relief bushes supplied (see
diagram on how to secure cable).
Terminal connections are also provided in the control
panel for ancillary controls.
See wiring diagram Fig. 5.
Warning - High and Low Voltage
In certain parts of the country, where there is a known risk
of high or low voltage fluctuations, the oil burner shall be
prevented from starting by the use of a voltage sensitive
device if the voltage drops or increases sufficiently to
endanger the installation.
Thermostats
The boiler is fitted with a variable setting control
thermostat and a pre-set limit thermostat. Should the
boiler thermostat malfunction, the limit thermostat will
take over control and shut down the boiler.
Ventilation
(Room sealed balanced flue boilers)
Although no openings are required for the supply of
combustion air (this comes from outside through the air
duct system direct to the burner), ventilation is, however,
necessary if the boiler is installed in a compartment or a
confined space in order to prevent overheating of the
boiler controls (See Fig. 7 for ventilation openings).
Extractor Fan (conventional flue only)
If the boiler room has an extractor fan, the combustion
performance of the appliance must not be affected when
the fan is running and all doors and windows are closed.
A flue gas check on the CO
2
% and smoke number should
be carried out to prove that combustion is satisfactory.
Heating and Domestic Hot Water Systems
The heating system should be installed in accordance
with current HVCA Codes of Practice and BS 5449 Part 1
‘Forced Circulation Hot Water Systems’.
Flow and return water connections can be made to the
boiler by using the tapings on the left or right hand side of
the boiler.
Fit drain-off cock in the lowest part of the system.
Where a boiler is also used for providing domestic hot
water, a double feed indirect cylinder to BS 1566 Part 1
must be used.
MAKE SURE ALL UNUSED BOILER TAPPINGS ARE
PLUGGED BEFORE FILLING THE SYSTEM.
Flush out the system to remove any swarf or residues
before fitting circulating pump.
Fig. 8
Summary of Contents for EuroStar Premier 50/90 Condensing
Page 10: ...FIG 5 WIRING DIAGRAM 7...
