Keston Thermomatic RSM20/FB, Installation & Servicing Instructions Manual, Page: 15 / 46

Page 15
Maximum distance from appliance side to outer wall
face:.273Qmm (T+ C), or (torn inner wall lace to outer
wall face: 2840 mm.
When measuring and cutting, always separate the flue
pipe with terminal from the air pipe.
b Join air pipe extension to standard pipe, cut the air
pipe extension (I) 110 mm diameter (fig. 3.6).
Cut from plain end to overall length of T + C + 1 80mm.
When culling the air pipe, take care not to ovalize it and
remove the internal sharp edges produced when cutting
the pipe.
c Cut the flue pipe (I) (fig.3.6) —cut from the plain
end:
Any flue: cut off exactly the same amount as removed
from the air pipe.
Drill again a hole (3 mm diameter) at the same distance
from the pipe end as it was before.
d Position the centralising springs n) o) p) q) (fig.3.6) at
about half of each flue pipe extension (I) and (f).
e Insert flue pipe (m) into (I) and secure with the
specific metal cutting screw; then insert flue pipe with
terminal (f) into (I) and secure with the specific screw.
f Insert the air pipe extension onto the standard air pipe
(e). and make sine that (he hole on the air pipe
extension corresponds to the groove on the standard
air pipe
g Insert the extended flue pipe into the extended air
pipe, from the side of bigger diameter (0110 mm).
h Insert the Hue pipe into Ilie elbow and secure it with
the specific screw
m Slip the ducting sealing ring over the air pipe and
position it near the terminal, at about 50 mm from the
air pipe end.
Then see section 4.7.1 k, I. rn. n. o.
4.7.3 VERTICAL FLUE SYSTEM
a Unpack the 1m vertical flue kit (kit VF/1). The
contents should be:
1 off 3060218 Fan socket sealing washer (1)
1 off R3560630 Conical adaptor Ø118/Ø80 with
test point (2)(3)
1 off R3560632 Concentric roof terminal Ø118
length 120cm(4)
1 off Roofing tile(5)
b Preparations:
- Drill a hole Ø130mm on the roof, in axis to the
fan socket. If this is not possible, consider the
above mentioned losses for every bend.
-
In relation to the overall length, arrange for the
proper anchorages along the wall where the
flue kit is going to be positioned.
c Installation:
1. Fit the sealing washer (1) onto the fan socket.
2. Fit the conical adaptor (2)(3)m to the fan
socket.
3. In case of extensions, check that in the
sockets of the flue pipe extensions Ø180mm
(7) there are the Ors (6) and that these are
correctly positioned. Measure the overall
length to be realized and, if necessary, shorten
always from the plain end of the pipe
extensions.
4. In case of extension, connect the air intake
extensions Ø118 (8) one to the other, after
having shortened the extensions, if necessary,
of the same size and always from the plain
end of the air intake extension.
5. Insert the so-assembled flue pipe extension
into the air pipe extension, then fit the whole
assembly into the adaptor(2)(3) already on the
boiler.
6. Properly position the roof finishing tile (5) and
insert the terminal (4) into the hole on the roof,
so that the tile remains at the roof outside.
7. Make the sliding air intake pipe of the terminal
to slide upwards, so to leave the flue pipe
uncovered, and insert the flue pipe into the
flue pipe extension already fitted on the boiler.
Then make the sliding air intake terminal pipe
to slide downwards and fit it into the air intake
extension already on the boiler.
8. Anchor the so assembled flue kit to the wall by
means of proper anchorages.
9. Finish the internal wall face around the hole in
the ceiling.
IMPORTANT:
For vertical concentric flue kits shorter than 1
meter and up to 1 meter of length, from paragraph
B) read directly paragraph F).