Grant Vortex VTXBH15/26 User Manual

Page 18
A 28mm push-t straight connector is provided for making the
connection to the open end of the bent ow pipe.
The ow pipe from the boiler will need to be vented as it is the
highest point on the primary heat exchanger.
! NOTE !
The pipe to be tted into the push-t connector provided
should be cut using a pipe slicer or pipe cutter, to leave the
end with a slight radius and free from any burrs or sharp
edges. It must NOT be cut using a hacksaw.
RETURN CONNECTION
A 1” BSP socket is provided for the boiler return connection. This
is located on the top of the boiler towards the front on the right
hand side. Refer to Figure 5-2.
The return pipe to the boiler will also need to be vented as it is the
highest point on the secondary heat exchanger.
5.4 46-70 MODELS
FLOW CONNECTION
A 1¼ʺ BSP socket is provided for the boiler ow connection. This
is located in the right hand side of the boiler. Refer to Figure 5-4.
The ow pipe from the boiler will need to be vented as it is the
highest point on the primary heat exchanger.
Dual stat phials
located in flow
connection at boiler
Figure 5-4: 46-70 models - dual stat, dual stat phials, ow and
return connections
RETURN CONNECTION
A second 1¼ʺ BSP socket is provided for the boiler return
connection. This is located on the top of the boiler towards the
front on the right hand side. Refer to Figure 5-4.
The return pipe to the boiler will also need to be vented as it is the
highest point on the secondary heat exchanger.
5.5 FITTING THE DUAL THERMOSTAT
Refer to Section 8 for the dual thermostat electrical connection
details.
The dual thermostat is supplied factory tted on the 46-70 Vortex
Boiler House models. Refer to Figure 5-4.
On all other models the dual thermostat is supplied on a mounting
bracket for tting on to the boiler casing by the installer on site. It
is to be located on the top of the boiler, at the front, towards the
right hand side. Refer to Figures 5-1 and 5-2.
To t the dual thermostat/mounting bracket:
1. Unscrew and remove the two xing screws from the top of
the boiler casing.
2. Position the dual thermostat/mounting bracket such that the
two holes in the ange align with the two xing holes in the
top of the boiler casing.
3. Secure the dual thermostat/mounting bracket using the two
xing screws previously removed.
15-26 MODELS
To t the dual thermostat capillary phials into their pockets on the
boiler:
1. Remove the cover plate located at the top of the boiler right
hand side panel.
To do this, unscrew and remove the two screws from the top
ange of the cover plate and remove it from the boiler. Refer
to Figure 5-5.
Figure 5-5: 15-26 models - cover plate (removed) and dual stat
pockets
2. Unwind the thermostat capillaries taking care not to kink or
break them.
3. Locate the two capillary phials in the two pockets on the side
of the boiler, ensuring that the capillaries pass through the
small cut-out in the top casing panel.
4. Ret the cover plate and secure in position using the two
xing screws previously removed.
26-46 MODEL
On this model the two pockets for the dual thermostat capillary
phials are located on the bent ow pipe tted into the boiler ow
connection. Refer to Section 5.3.
1. Unwind the thermostat capillaries taking care not to kink or
break them.
2. Locate the two capillary phials in the two pockets on the side
of the ow pipe.
3. Secure both phials in place by tting the split pin provided
through the small holes at the top of the phial pockets. Refer
to Figure 5-6.
Figure 5-6: 26-46 model - dual stat phials tted in pockets
Section 5: Pipe Connections

Grant Vortex VTXBH15/26 Specifications

General

Brand	Grant
Model	Vortex VTXBH15/26
Category	Boiler
Language	English