Technical data
Procon
. R S F
The Procon , , & boilers have an excess pressure combustion system, which coupled with very low
ue gas temperatures, allows the appliance to be ued over considerable distances.
The Procon , , & boilers are tted with a concentric ue outlet on the top of the boiler and uses a
female mm
∅
PPS polypropylene ue gas pipe within a male mm
∅
painted metal combustion air pipe, see
g .. To connect to the standard concentric ue components supplied by RVR a ue adaptor is required.
The ue system must be installed to have at least a ° fall to the boiler to allow any condensate which may
form in the ue system to drain back to the boiler.
The ue system must be gas and water tight, and must be adequately supported over its entire length. Sup-
ports at -metre intervals are essential.
Care should be taken when selecting a position with a low level
discharge, or discharges’ adjacent to windows, doors, etc, as the ue
terminal will plume heavily and the white water vapour discharged
may cause a visual nuisance.
The concentric ue components have push together spigot and sock-
et joints. Both the inner PPS ue gas tube, and the outer combustion air
tube have soft EPDM O-rings located in the socket components.
To aid assembly and assure that the joints have been fully pushed
home, the sealing EPDM O-rings and male ends of the tubes and ttings
should be lightly lubricated with silicone grease. A range of concentric
ue components are available from RVR Ltd; and is listed on page .
. I H W
T
Rear Outlet Assembly Method
The following procedure applies to rear ue terminal position.
) With the boiler mounted in position, see section ., draw a horizontal line on
the wall mm (, & models) above the top of the boiler. See g .a.
) Mark the center of the ue spigot on the wall, remove the boiler from its hang-
ing bracket and carefully position to one side. Draw a vertical line from the
center mark of the ue spigot to intersect the horizontal line. See g .a.
) At the intersection of the horizontal and vertical lines, cut a mm ∅ hole
with a core drill. See g .a.
) Measure the wall thickness ‘W’ in millimeters, add mm (, & mod-
els), or mm ( Model) to achieve total length ‘TL’ of ue pipe required.
) Mark the Horizontal Wall Terminal a distance of ‘TL’ from the outer edge of
the Air Pipe. Both tubes should be cut ush and square with each other,
and any burrs removed. See g .b.
) Re-position the boiler onto the hanging bracket, as detailed in section ..
) Fit the Flue Adaptor to the top of the boiler and lubricate the two seals
with silicone grease.
) Lubricate the male ends of the concentric bend and the ue adapter with
silicone grease; locate the ue adapter onto the ue outlet connection on
top of the boiler, and gently push home. Locate the bend on top of the
ue adapter, and gently push home.
) Locate the wall bezel plate onto the wall terminal assembly and position the
terminal through the previously prepared hole from outside the building.
) Locate the bezel plate onto the wall terminal for the inside face of the wall.
Lubricate the male ends of the concentric bend with silicone grease.
) Locate concentric tubes into bend and gently push fully home. Ensure
that the plain section of the external part of the air inlet tube is located
uppermost. See g .c.
) Fix internal and external wall bezel plates with xings provided. See g .c.
Fig . – Models , & Illustrated
Fig .a
Fig .b
Fig .c