Tiffin Motorhomes Allegro Bus 2016 Owner's Manual page 92

Your Aqua-Hot heating system operates off the coach's sole diesel tank. Keep in mind
that the Aqua-Hot fuel tube is located higher up in the diesel tank than the coach's
engine fuel in order to prevent complete depletion of the disel fuel tank. BE SURE AN
ADEQUATE AMOUNT OF FUEL IS IN THE TANK BEFORE DRY CAMPING.
Yearly maintenance is required on the burner portion of the Aqua-Hot heating system.
DO NOT operate the diesel-burner and/or the electric heating element without
the water and anti-freeze soliution in the Aqua-Hot's boiler tank. Failure to do so
will cause SERIOUS DAMAGE to the heater.
PLUMBING & BATH FEATURES
N OTIC E
NOT IC E
WA RN ING
85