Installation
Page 17
vent pipe, refer to the CIBSE Domestic Heating Design Guide and
OFTEC Technical Book 4 (Installation).
4.5 PIPEWORK MATERIALS
The Grant Vortex boiler is compatible with both copper, aluminium
and plastic pipe. Where plastic pipe or aluminium piping is used it
must be of the oxygen barrier type and be the correct class (to BS
7291-1) for the application concerned.
On either sealed or open-vented systems; where plastic pipe is
used a minimum of ONE metre of copper pipe (or as per pipe
manufacturers instructions) MUST be connected between both the
boiler fl ow and return connections and the plastic pipe.
Grant Ireland does not accept any responsibility for any damage,
however caused, to plastic piping or fi ttings.
SEALED SYSTEMS
If plastic pipe is to be used, the installer must check with the plastic
pipe manufacturer that the pipe to be used is suitable for the
temperature and pressures concerned.
Plastic pipe must be Class S to BS 7291-1.
UNDERFLOOR PIPEWORK
Plastic pipe may be used on underfl oor fl oor systems where the
plastic pipe is fi tted after the thermostatic mixing valve. Copper tube
must be used for at least the fi rst metre of fl ow and return primary
pipework between the boiler and the underfl oor mixing/blending
valves.
4.6
CONNECTIONS
4.6.1 FLOW
AND RETURN CONNECTIONS
Refer to Section 5.
4.6.2
CONDENSATE CONNECTION
Grant Vortex boilers are supplied with a factory-fi tted condensate
trap to provide the required 75 mm water seal in the condensate
discharge pipe from the boiler.
Refer to Section 6 for details of the condensate disposal pipework.
4.7 PREPARATION
FOR
INSTALLATION
1. Carefully remove the packaging from the boiler and remove it
from the transit pallet.
2. Pull the front panel forward at the top to disengage the fi xing
clips then lift it up and off the boiler. Remove the literature pack
3. Lift off the case top panel(s) and remove the water connecting
fi ttings.
4.8 BEFORE INSTALLATION
To avoid the danger of dirt and foreign matter entering the boiler
the complete heating system should be thoroughly fl ushed out –
both 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 to be installed on an older system.
For optimum performance after installation, the boiler and the
associated heating system must be fl ushed in accordance with
the guidelines given in BSEN 422 (Treatment of water in domestic
hot water central heating systems). This must involve the use of a
proprietary cleaner.
After cleaning, it is vitally important that all traces of the cleaner are
thoroughly fl ushed from the system.
For long term protection against corrosion and scale, after
cleaning/fl ushing a suitable inhibitor should be added to the system
water, such as G1000, in accordance with the manufacturers’
instructions.
Failure to follow the above will invalidate the guarantee.
If the boiler is installed in a garage or out house, in order to provide
further protection should there be a power failure in cold weather,
a combined anti-freeze and corrosion inhibitor can be used. Follow
the manufacturers’ instructions supplied to achieve the level of anti-
freeze protection required.
Grant Ireland strongly recommends that a Grant Mag One in-line
magnetic fi lter/s (or equivalent*) is fi tted in the heating system
pipework. This should be installed and regularly serviced in
accordance with the fi lter manufacturer’s instructions.
* As measured by gauss. The MagOne magnetic fi lter has a gauss
value of 12000.
4.9
INSTALLING THE BOILER
1. Having decided upon the position of the boiler and type of
fl ue, prepare the wall as described in Section 9. Ensure that the
fl ue terminal position complies with the necessary clearances.
2. Make the water connections as described in Section 5. If
access will be restricted, make any connections to the boiler
before placing it in its fi nal position. Refer to Section 7 if the
boiler is to be used on a sealed system.
3. Ensure the requirements are met for the disposal of condensate
as described in Section 6.
4. Connect the power supply as described in Section 8.
5. Connect the fl ue and ensure there is an adequate air supply as
described in Section 9.
4.10 COMPLETION
Following installation of the boiler, instruct the user in the operation
of the boiler, the boiler controls, the heating controls and the safety
devices.
WARNING
When plastic pipe is used, the system MUST
incorporate a low level pressure switch to shut
off power to the boiler if the system pressure
drops below 0.2 bar. A suitable low pressure
switch is available to purchase from Grant
Ireland (product code:( ZPRESSSWITCHBRASS).
If using a balanced fl ue system - install the
balanced fl ue system before connecting the
heating system pipework to the boiler. Once
the fl ue system is fi tted then complete the
water connections and fi ll the heating system.
Please ensure that the boiler passport
(provided with the boiler) is completed in
full, leaving the top/white copy with the
use, returning the middle copy to Grant
Engineering, and retain the fi nal copy for the
homeowners records
NOTE
NOTE
