Part No. 5102478
37
If the pressure indicated on the pressure gauge is
greater than 2.5 bar when operating at the maximum
central heating temperature, an extra expansion vessel
must be fitted to the system as close as possible to
the boiler central heating return connection.
Any extra vessel fitted must be pressurised to the same
figure as the integral vessel.
Domestic Hot Water System (Flowsure/F)
1.
Check that the mains water supply has been fully
flushed out at installation. If not, disconnect the
cold water inlet pipe from the boiler and flush the
cold supply thoroughly
2.
Set the boiler to hot water mode.
3.
Fully open the hot water tap.
4.
With a suitable water measuring container, check
the water flow rate, see Table 1 (page 13).
5.
The flow rate can be manually adjusted at the
mains cold water inlet isolating valve if the flow
rates as indicated in Table 1 cannot be achieved.
6.
Set the mixer valve for optimum hot water
temperature, See the Users Instructions for
adjustment (Fonly).
7.
Fully close the hot water tap.
Note: Max flow rate for Flowsure, 13 ± 1.5 litres/minute
and F, 17.5 ± 1.5 litres/minute.
Completion of Commissioning
If the boiler is being passed over to the user
immediately, advise the user of the precautions
necessary to prevent damage to the system and to
the building in the event of the system remaining
inoperative during frost conditions. Advise the user that
for continued efficient and safe operation of the boiler,
it is important that adequate servicing is carried out
by a qualified engineer at least once a year for boilers
using kerosene and twice a year if using gas oil. Set
the system controls to the user’s requirements.
If the boiler is to be left inoperative, set all controls off.
Turn off oil supply at the isolating valve and switch off
the electricity supply. If there is any possibility of the
boiler and system being left inoperative during frosty
conditions then drain the boiler and system.
4. Having completed the necessary water connections,
those connections not utilised should be plugged.
5.
Check that the central heating system has been fully
flushed out at installation using a flushing agent. If
not, add a suitable flushing agent to the system and
fill the system. Then drain the system while hot and
immediately refill adding a suitable proprietary
corrosion inhibitor (such as Fernox).
The following procedures should be used when filling
the sealed system boilers.
6.
Set the diverter valve to the mid position by moving
the manual lever to the left hand side and locking in
position (Flowsure/F). Open all radiators
and lockshield valves and remove and discard the
automatic air vent cap.
7.
Fill the system and check that air is being discharged
from the automatic air vent.
8.
Vent each radiator in turn to remove the air from the
system.
9.
Bleed any air from the boiler pipework using the
manual air vents provided (Flowsure/F).
10. Disconnect the burner at the control box by pressing
the connecting plug locking tab and pulling the plug
free.
11. When the system has been completely vented, set
the controls to call for heat. The pump will now operate
and any remaining air can be purged from the system
using the appropriate bleed points.
12. Set all controls to stand-by and reconnect burner
electrical plug to control box.
13. Return the diverter valve lever to the normal right
hand position (Flowsure/F).
Set the Expansion Vessel Pressure
The charge pressure of the expansion vessel as
dispatched is 0.5 bar, which is equivalent to a static
head of 5 metres (16.5 ft). The charge pressure must
not be less than the static head at the point of
connection. A schraider type valve is fitted to the
expansion vessel to allow the charge pressure to be
increased if necessary.
Set the System Pressure
Fill the system until the pressure gauge shows 1.5 bar
(21.5 lb/in²) and check for water soundness. Release
water from the system until the system design pressure
is obtained, up to a maximum of 1.5 bar.
System design pressure in bar = static head of the system
in bar + 0.3
Note: 1 bar is equivalent to 10.2 metres (33.5 ft) of
water. Set the movable pointer giving a permanent
record of the set system pressure when cold.
Installation & Commissioning
Summary of Contents for Statesman 45/50
Page 30: ...30 Part No 5102478 Installation Commissioning Fig 21 ...
Page 31: ...Part No 5102478 31 Fig 22 Installation Commissioning ...
Page 32: ...32 Part No 5102478 Installation Commissioning Fig 23 ...
Page 35: ...Part No 5102478 35 Fig 25 Installation Commissioning ...
Page 45: ...Part No 5102478 45 Servicing Maintenance Fig 31 ...
Page 46: ...46 Part No 5102478 Servicing Maintenance Fig 32 ...
