8. Water 119
Neverintroduceanti-freezeorotherchemicalsintothe
watersystem.
Thiscanbepoisonous!
Whenoperatingduringwinterensurethatthefreshwater
tankissucientlyheated.
To remove water
• Thewaterwillbemixedtothedesiredtemperature
accordingtothepositionofthepre-mixingunit.
Hot water supply
Hotwaterissuppliedbymeansofthehot-airheatingsystem
withitsintegratedhot-waterboiler (see also Chapter 10.2);
theoptionsforsettingsaredescribedonp. 140 “Changing
the hot water temperature”.
Theboilerwillautomaticallyemptyitselfviaasafetyoroutlet
valveifthereisdangeroffrost (see also p. 148 Frost Control).
Position of the Frost Control valve
TheFrostControlvalveisalwayslocateddirectlybythemodel-
specicplaceofinstallationforthehot-airheatingsystem.
Thenon-electricsafetyordrainvalvewillautomatically
openattemperaturesunderapprox.3°Canddrainthe
boilercontentsviaadrainnozzle.
Ifthecoldwatersystemisoperatedwithouttheboilerthe
boilertankwillstillllwithwater.Inordertoavoidfrost
damagetheboilermustbedrainedviathedrainvalve,
evenwhennotinuse.
Frost Control