Technical data
Procon
. F
The ue outlet and combustion air inlet connections to the appliance are located on the top of the appliance;
see g .. These connections are arranged concentrically with a Female mm
∅
ue gas connection centrally
within a Male mm ∅ air connection.
There are two options for ueing the Procon boiler:
) Room Sealed, using either concentric / mm
∅ ue components, or separate mm ∅ ue compo-
nents; where the air for combustion is taken from outside of the building. When using a room sealed
ue, ventilation to the boiler/s location may not be required, see section . for further guidance.
) Conventionally, using mm
∅ ue components for the combustion gases only and air for combustion
being taken from the room or compartment that the appliance is installed. The ventilation to the room
or compartment that the boiler/s are installed MUST be ventilated in accordance with the requirements
of IS , IS, BS or BS as appropriate, see section . for further guidance.
. C F
The Procon , , & boilers have an excess pressure
combustion system, which coupled with very low ue gas tem-
peratures, allows the appliance to be ued over considerable
distances.
As standard the Procon , , & boiler is supplied with
a concentric ue outlet on the top of the boiler and utilizes an
mm
∅ PPS polypropylene ue gas pipe within a mm ∅
painted metal combustion air pipe, see g ..
To ue the boiler conventionally, i.e. exhaust only, only the
inner mm
∅ PPS socket is used.
The gap between the mm
∅ PPS socket and the mm
∅ painted metal combustion air pipe is left open to allow the
air for combustion to enter the boiler from the room in which
the boiler is installed.
Any sections of the ue system that are to be installed horizontally MUST have at least a ° fall to the boiler
to allow any condensate which may form in the ue system to drain back into 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 win-
dows, doors, etc, as the ue terminal will plume heavily and the white water vapour discharged may cause a
visual nuisance.
The PPS ue components have push together spigot and socket joints, and 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 mm
∅ PPS ue components are available from RVR Boilers Ltd; and is listed on page .
. M C F
The Procon , , & boilers can be connected onto common
conventional ue, in a modular arrangement; however, due to the
excess pressure combustion system, consideration must be given to
ensure that the excess pressure of a ring appliance/s is not applied to
any non- ring appliance/s.
Therefore, to ensure that the excess pressures are catered for, the
common ue system MUST be designed so that under partial load, the
resistance of the common riser MUST always be of a lesser resistance
than that of any boiler ue branch connecting to the common riser,
furthermore, the use of swept or shoed tee MUST be utilized.
The ue components used shall be pressure tight, and suitable for
a pressure in excess of Pascal’s.
They shall also be of a suitable material for use with condensing
boilers, such as PPS Plastic, or L Stainless Steel, etc.
Fig . – Models , & Illustrated
Fig .