67
HEATINGSYSTEMS
NB:Iftheelectricsupplyhasunstablevoltage,
theamperagewillalsouctuate.
i
Alderecommendsttingthe3010-
246loadmonitor,allowingyoutoset
alimitonthecurrentdrawnbythe
vehicleandtheelectricheatingto
automaticallyaccommodateit.
LPG
LPG (liqueed petroleum gas) has two main
variants, propane and butane gas. The gas
heatinginyourAlde3020Compactboilercan
usepropaneorbutanegasasfuel.ManyLPG
fuelscontainamixtureofpropane,butaneand
otheradditives.
BS5482Part1states,“Forbutanecylinders,
satisfactory service might not be obtained
at temperatures of less than 10°C; the most
suitable temperature range is from 13°C to
30°C. For temperatures less than 13°C, the
useofpropaneshouldbeconsidered.”
For this reason, Alde recommends using
propanegasforallyearroundgasheating.
LPG cylinders contain both gas and liquid
forms. When the cylinder is lled, high
pressure transforms the gas into liquid. The
liquid reverts to gas when the valve on the
cylinderisopened.
LPG is a ammable gas.It canbe a re and
explosionhazardifstoredorusedincorrectly.
Store cylinders vertically and securely, to
preventthemfromtoppling.
Donotmount yourLPGcylinderhorizontally
or use liquidphase gas cylinders.Liquid–gas
explosionmayresult. Readthe productlabel
orcontactproductmanufacturerfordetails.
LPG is heavier than air. Should a gas leak
occur,oorventsinacaravanormotorhome
should allow the gas to escape from the
vehicle. For this reason, always ensure oor
ventsareunobstructed.
!
Theboilercompartmentcontainsthe
gasconnection,oorventsandthe
uehoses.Donotplacestowagein
theboilercompartment.
Intheeventofagasleak,orifyousmellgas:
•Extinguishallnakedames.
•Openalldoorsandwindows.
•Closeallgasvalves,includingthevalveon
thecylinder.
•Donotsmoke.
•Donotoperateanyelectricalappliancesor
switches.
•Arrange for immediate inspection of the
gas system by a competent person in
accordancewithcurrentlocalregulations.
LPGfromthecylinderisreducedinpressure
by a regulator, and is supplied to the boiler
at low pressure (30mbar). Never use an
unregulatedhighpressuresupply.
Where oil and dirt in the gas supply are a
concern,gasltersshouldbettedtoprevent
blockageoftheboilergasvalve.
NB: Gas heating must not be used while
driving your vehicle unless a safety shut-off
device is tted to the gas system. Current
localregulationsmustbeadheredto.
Flue
The burning of LPG produces CO² (carbon
dioxide),anon-toxic,asphyxiantgas.
Exhaustuegascancausepossibleburnsand
poisoning.Avoidinhalingexhaustuegas.
!
Donotpositionawnings,tentsor
otherenclosuresaroundtheue
terminal.
Air supply is essential for clean
combustion. The air intake is
located in the ue terminal. For best
performance,theueterminalshould
be well vented. If leaving the gas
heating unused for a period, ensure
theueterminaliscoveredtoprevent
pestanimalsnestingintheue.
!
Donotobstructtheue.Becareful
nottooodtheuewhenwashingthe
vehicle.
!
Thegasheatingmustnotbeused
whenrefuellingthevehicleatthe
servicestationorrelatedfacility.
Maintenance
There is no manufacturer’s service
requirement for the Alde 3020 Compact HE
boiler itself. Current local regulations must
be adhered to. The installation of the boiler
shouldbeinspectedannuallyforgassafety.
LPG hoses should be regularly checked for
signs of damage and should be replaced, at
maximum,after3yearsofuse.
Bleedair from the systemwhen newlylled,
whenthevehiclehasbeenstandingunusedfor
aperiod,andbeforedepartingonholiday.
The uid level in the expansion tank should