Propex HS2211 Mode D'emploi page 4

The Propex heater is designed for mounting the unit underneath the vehicle; various
bracket fixings allow different positions and orientations for mounting, increasing fitting
options under floors or up between chassis rails
Total Control
The HS2211 is supplied as standard with a solid state electronic thermostat which
automatically switches the unit on and off to maintain the desired temperature. When the
room temperature drops below the selected level, the Heatsource will automatically ignite and
run until the cabin reaches the selected temperature. The thermostat is an easy to fit surface
mount design and integrates with the new electronics fitted to the HS2211 heaters. Simple
intuitive controls gives easy heater control and a constant heater feedback loop enable quick
and easy system diagnose.
Efficiency
Gas Efficiency
With forced air combustion and the Propex two stage stainless steel heat-exchanger, the
HS2211 is a clean and highly efficient way to heat your vehicle or boat. Air for combustion is
taken from outside your caravan or motor- home and passed into the combustion chamber
having been mixed with gas during three aeration stages; it is ignited automatically and heats
up the large surface area of the heat-exchanger. The Heatsource units are totally room sealed
and exhaust all products of combustion externally through neat 22mm i.d. stainless steels flue
pipe. To add to the efficiency, cabin air is normally re-circulated in preference to using cold
air from outside. The HS series heaters are also very efficient on12 volt electrical current
consumption drawing less than 1.7 amps on gas operation.
Quiet Operation
Propex heaters are designed to be quiet in operation without compromising air throughput and
heat output. There will always be some air noise from a system that produces a healthy
airflow, however, by using high quality balanced fans and smooth enclosed motors with ball
race bearings; noise is kept to a minimum. Noise is also unaffected by high voltage, a
common occurrence with battery charges, solar panels etc permanently wired. The micro-
processor electronics regulates the motor voltage so that the fan speed does not alter between
10 to 15 volts.
Installation
The HS2211 can be supplied with complete fitting kits to suit underfloor installations, with
kits available to cover the number of outlets required. In vehicles and caravans the unit is
usually mounted under the floor or between chassis rails, with some vehicle specific mounting
kits available, the combustion pipes are then lead out to the side of the vehicle. The low
profile design of the heater means no pipes or easily snagged parts are left exposed and so
maintaining the ground clearance of the vehicle. The heat is ducted to one or more outlets
through tough highly flexible 60mm ducting and up into the vehicle in your preferred
location. The ducting runs outside the vehicle should be run inside insulated ducting to
minimise heat loss. In the case of multi-outlet installations, the first outlet is an open outlet