22
Grant Vortex Indoor/Utility, System and Boiler House Oil Boilers
4 - GENERAL BOILER INFORMATION
Boiler location
4.10
1 The boiler must stand on a surface that is firm and
level. It does not require a special hearth as the
temperature of the boiler base is less than 50° C.
2 Sufficient clearance must be allowed at the front of the
boiler to remove the burner and baffles for servicing.
3 Indoor/Utility models - Once the boiler has been
installed, a permanent worktop may be fitted over
it as access to the top of the boiler is no longer
required after installation.
System models - A removable section of worktop
above the boiler is required to provide access for
servicing.
Water connections - System models
4.12
Water connections - all models See Fig. 12
4.11
50/70 Indoor/Utility
50/90 Indoor/Utility
50/90 System
90/120 Indoor/Utility
90/120 System
120/155 Indoor/Utility
120/155 System
155/200 Indoor/Utility
200/240 Indoor/Utility
50/90 Boiler House
90/120 Boiler House
120/155 Boiler House
155/200 Boiler House
200/240 Boiler House
*22 mm pipe
*22 mm pipe
22 mm pipe
*28 mm pipe
28 mm pipe
*28 mm pipe
28 mm pipe
*1¼ " BSP
*1¼ " BSP
*1" BSP
*1" BSP
*1" BSP
*1¼ " BSP
*1¼ " BSP
Compression straight
Compression elbow
Compression
Compression straight
Compression
Compression straight
Compression
none
none
none
none
none
none
none
in fittings kit
in fittings kit
fitted
in fittings kit
fitted
in fittings kit
fitted
-
-
-
-
-
-
-
22 mm pipe
22 mm pipe
22 mm pipe
28 mm pipe
28 mm pipe
28 mm pipe
28 mm pipe
1¼ " BSP
1¼ " BSP
1" BSP
1" BSP
1" BSP
1¼ " BSP
1¼ " BSP
Compression
Compression
Compression
Compression
Compression
Compression
Compression
none
none
none
none
none
none
none
fitted
fitted
fitted
fitted
fitted
fitted
fitted
-
-
-
-
-
-
-
Size SizeFitting FittingSupplied Supplied
Boiler model
Flow connection
Return connection
1 A 15 mm discharge pipe must be connected to the
safety valve outlet connection. The pipework between
the safety valve and the boiler must be unrestricted,
i.e. no valves. The discharge pipe should be run to the
outside of the building and terminate so that it cannot
cause injury to persons or property.
2 A 15 mm double check valve ballofix type valve is
provided on the flexible filling loop hose for
connection of the cold mains supply to the heating
system. The cold mains supply should terminate
inside the boiler casing.
3 The expansion vessel is connected via a flexible
hose to allow it to be moved to gain access to the
baffle cleaning cover. When replacing the vessel,
care should be taken to ensure that the flexible
connecting hose is not twisted.
*Ensure the flow pipe is vented at its highest point of the boiler.
All models
To avoid the danger of dirt and foreign matter entering the boiler the complete heating system should be thoroughly
flushed out - before the boiler is connected and then again after the system has been heated and is still hot. This is
especially important where the boiler is used on an old system.
For optimum performance after installation, this boiler and its associated central heating system must be flushed in accordance with the
guidelines given in BS 7593:1992 'Treatment of water in domestic hot water central heating systems'.
This must involve the use of a proprietary cleaner, such as BetzDearborn's Sentinel X300 or X400, or Fernox Restorer.
For Long term protection against corrosion and scale, after flushing, it is recommended that an inhibitor such as
Betzdearborn's Sentinel X100 or Fernox MB-1 is dosed in accordance with the guidelines given in BS 7593:1992.
Failure to implement the guidelines will invalidate the warranty.
A drain cock is fitted at the bottom on the front of the boiler to allow the heating system to be drained, on the Boiler
House models the drain cock is supplied in the accessories pack and requires to be fitted.
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