23
Grant Vortex Outdoor Module
5 - BOILER INSTALLATION
See Figs. 8 and 9
1 To gain access to the water connections, remove
the two screws securing the bottom of the back
panel and remove it by withdrawing it forwards at
the bottom. Remove the top casing panel.
2 To gain access to the burner, remove the front
panel by turning the handle and withdrawing it
forwards at the bottom..
3 If required, fit the Grant sealed system kit, see
Section 5.5.
4 A Tectite elbow is fitted to the flow connection.
Orientate the elbow in the required direction. A
compression elbow is fitted to the return
connection, orientate the elbow in the required
direction.
5 Carefully manoeuvre the boiler in position to line
up with pipework through the wall. Complete the
water connections.
Note: Check that the baffles are in position and
that the cleaning cover is correctly fitted and a
good seal made.
6 If the boiler is installed against a wall, fit the wall
flashing strip. Position the strip with the bottom
edge of the wider flange 20 mm above the
enclosure top panel, with the narrow flange (with
the three fixing holes) flat against the wall. The
strip should overhang the top panel by an equal
amount at each end.
Mark the position of the three fixing holes onto the
wall, drill and plug the wall and secure the strip
with suitable screws (not supplied).
7 Fill and vent the water system and check for leaks,
rectifying where necessary.
If the Grant sealed system kit is fitted, refer to
Section 5.6 for details on filling and venting the
sealed heating system.
Make the water connections
5.4
See Fig. 16
1 The kit includes the following items:
Pressure relief valve and automatic air vent
assembly
22 mm Tectite elbow
12 litre expansion vessel with flexible hose and
sealing washer
Filling loop kit
Pressure gauge
6 m head circulating pump with 22 mm gate type valves
15 mm copper pressure relief valve discharge pipe
2 Remove the ½” BSP black iron plug from the front
of the boiler waterway.
3 Fit the ½” BSP straight end of the flexible
expansion vessel hose to the tapping on the front of
the waterway.
4 Position the 12 litre expansion vessel on the front
of the boiler combustion door locating the bracket
onto the uppermost handle of the combustion door.
5 Fit the ¾” BSP connection of the flexible
expansion vessel hose to the vessel using the black
rubber washer supplied and tighten the nut.
6 Push fit the 22 mm Tectite elbow to the boiler flow
connection.
7 Push fit the automatic air vent/pressure relief valve
assembly into the Tectite elbow.
8 Fit both 22 mm pump valves to the circulating
pump using the sealing washers supplied.
9 Fit the pump assembly to the automatic air vent/
pressure relief valve assembly ensuring that the
pump shaft is horizontal and the pump motor is
facing towards the front of the boiler. The flow
arrow on the body of the pump must face in the
direction of flow away from the boiler connection.
10 Fit the pressure relief valve discharge pipe to the
pressure relief valve using the nut and olive
supplied. Route the discharge pipe through the slot
in the base of the right hand side panel. Push the
panel insulation back to expose the slot.
11 The circulating pump may be wired into the boiler
control panel if required. Refer to Section 9.
12 The pressure gauge and filling loop should be
installed in a convenient postion inside the
building.
Sealed system kit - 15/26
5.5
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