35
Grant Vortex Eco Utility Oil Boilers
6 - BOILER INSTALLATION
1 Lift off the boiler case top panel, if it has not
already been removed.
2 Remove the top of the control panel and open the
cable clamp. Route the supply cable through the
hole in the rear panel (using the grommet supplied)
up to the control panel, pass it through the cable
clamp and connect to the boiler terminal block
(refer to Section 10) as follows:-
Brown to live (terminal 1)
Blue to mains neutral (terminal 2)
Green/Yellow to mains earth (terminal 3)
Note: Ensure that the route and length of the cable
is such that the boiler front cover plate can be
easily removed without disconnecting the supply
cable from the terminal block.
3 Secure the cable in the cable clamp.
4 Place the wiring cover in position over the terminal
block, taking care not to trap any wires and secure
in position with the two M4 screws provided.
5 Ensure that all external wiring is adequately supported.
Do not switch on the electricity supply at this stage.
See Fig. 7
If a two pipe system is to be used refer to Section 4.4.6.
1 Remove the oil inlet plug from the fuel pump and
connect the elbow of the flexible fuel hose supplied
with the boiler.
2 Connect the flexible fuel hose to the rigid supply
using the adaptor supplied. The supply enters
through one of the holes in the casing plinth.
1 Automatic air vent(s) are fitted to the top of the
boiler. Check that the small cap on the top of each
air vent is screwed on fully, then unscrew it one
complete turn - the cap remains in this position
from now on.
2 If the flexible filling loop is used to fill the system, ensure
it is connected and that the valve connecting it to the
boiler is open and the valve at the front is closed.
A valve is open when the operating lever is in line with
the valve, and closed when it is at right angles to it.
3 Ensure that the mains cold water supply valve is open
(operating lever in line with the valve), then turn on the
mains cold water supply and gradually open the front
valve on the filling loop until water is heard to flow.
4 Vent each radiator in turn, starting with the lowest
one in the system, to remove air.
5 It is important that the pump is properly vented to
avoid it running dry and damaging its bearings. To
gain access to the pump for venting it is necessary
to remove the control panel.
Loosen the four fixing screws securing the panel to the
casing, push the panel towards the rear of the boiler and
lower the control panel to expose the pump.
Remove the cap, then unscrew and remove the plug
from the centre of the pump. Using a suitable
screwdriver rotate the exposed spindle about one
turn. Replace the plug and cap.
6 Check the operation of the safety valve by turning
the head anticlockwise until it clicks. The click is
the safety valve head lifting off its seat allowing
water to escape from the system.
Check that this is actually happening.
7 Continue to fill the system until the pressure gauge
indicates between 0.5 and 1.0 bar. Close the fill point
valve and check the system for water soundness,
rectifying where necessary. Water may be released
from the system by manually operating the safety
valve until the system design pressure is obtained.
8 The system design pressure (cold) should be
between 0.5 bar and 1.0 bar. The pressure is
equivalent to the maximum static head in bar + 0.3
(1 bar = 10.2 metres of water), where the static
head is the vertical height from the centre of the
expansion vessel to the highest point of the system.
9 Close the valves either side of the filling loop and
disconnect the loop.
Connect the power supply
6.8
Fill the sealed system
6.10
Connect the fuel supply
6.9
To Next Page
Loading...
