3 BOILER
INSTALLATION
16
7 Insert the terminal end of the inner duct into the end of the outer duct just cut and push it fully home. If there
is sufficient space around the boiler to fit the inner duct from inside the building, then do this in paragraph 9.
8 From outside the building insert the assembly (or outer duct only) into the wall and carefully push it towards
the boiler.
9 If the inner duct has already been positioned inside the outer duct, withdraw it into the building sufficiently to
fit the flue elbow.
10 Locate the sealing collar over the outer duct with the larger internal diameter towards the wall.
11 Position the 'O' rings (supplied in the flue accessories pack) into the recesses at each end of the inner tube
of the flue elbow.
Note: If the flue length is less than 1 m, fit the flue restrictor supplied into the inlet socket of the flue as
shown in Fig. 11 - push the restrictor up into the socket as far as it will go.
12 Position the gasket (supplied in the flue accessories pack) over the fan spigot on top of the boiler, lining it up
with the screw holes.
13 Lubricate the 'O' rings in the flue elbow with a soap solution to aid assembly, then insert the inner duct into
the end of the elbow without the flange. If the spacing clip is fitted over the inner duct, ensure that the legs
are facing downwards.
14 Push the elbow and inner duct assembly into the outer duct, raising the elbow above the fan spigot then
lowering it into position over the spigot. Secure the elbow to the boiler with the four M4 screws supplied in
the flue accessories pack.
15 Locate the sealing sleeve over the elbow as far as possible, then carefully withdraw the outer duct from the
wall entering it into the sleeve as far as possible.
16 Open the clamp (supplied in the flue accessories pack) and locate it over the sealing sleeve. Fit the two
No.8 self tapping screws (supplied in the flue accessories pack) to the clamp and tighten to secure the outer
duct to the elbow.
17 Make good the inside wall and also the outside wall behind the outer sealing collar.
18 Fit a terminal guard if necessary. See section 2.7.
3.5.1
FIT A FLUE EXTENSION TO A HORIZONTAL FLUE (See Fig. 12)
1 Withdraw the inner flue duct from the outer air duct of the standard flue supplied with the boiler.
2 Position the flared end of the extension inner duct over the
standard duct. Drill through the two pilot holes in the flared end
of the extension into the standard duct using a 2.8 mm dia.
drill. Secure the two ducts together using two of the screws
supplied with the extension.
Leave the spacing clip in position on the standard duct.
3 Position the connecting sleeve (supplied with the extension)
over the plain end of the standard outer duct, then slide in the
outer duct of the extension. Secure the two together using the
clamp and screws supplied with the extension.
4 Repeat with another extension if necessary.
5 Cut to length and fit the flue as described in the previous
section (3.5). It is necessary to support the flue with a suitable
bracket(s) when flue lengths approaching the maximum are
used.
3.6
CONNECT THE POWER SUPPLY (See Fig. 13)
The boiler is supplied with a factory fitted power supply cable and 3 A
fused 3-pin plug. Connect the supply cable to a suitable power
supply. Ensure correct polarity.
With the power supply OFF.
1 Remove the four screws securing the control box top cover. Slide
the cover back and up to remove it from the control box.
2 To connect a room thermostat proceed as follows:-
Pass the room thermostat leads through the cable support bush in
the back of the control box (next to the power supply cable).
Remove the yellow link between terminals 1 and 2 on the main
terminal block and connect the thermostat in its place.
3 Carry out electrical system checks - Short circuit, Polarity, Earth
continuity and Resistance to earth.
4 Replace the control box cover, ensuring the front return edge is
located under the front panel return, and secure with four screws.
Do not switch on the electricity supply at this stage.
3.5.2
Fig. 12
Fig. 13
Summary of Contents for RIO 140
Page 33: ...10 WIRING DIAGRAMS 33 10 1 ILLUSTRATED WIRING DIAGRAM ...
Page 34: ...10 WIRING DIAGRAMS 34 10 2 FUNCTIONAL FLOW WIRING DIAGRAM ...
Page 35: ...11 SEQUENCE OF OPERATION CHARTS 35 11 1 AUTOMATIC IGNITION SEQUENCE ...
Page 36: ...11 SEQUENCE OF OPERATION CHARTS 36 11 2 OPERATION IN CENTRAL HEATING MODE ...
Page 37: ...11 SEQUENCE OF OPERATION CHARTS 37 11 3 OPERATION IN DOMESTIC HOT WATER MODE ...
Page 47: ...NOTE 47 ...
Page 54: ...6 ELECTRONIC TIMER Description of controls see Figs 3 and 4 ...
