153
Heating & Cooling
Air conditioner gasket
The air conditioner is subjected to wind pressures along with
motor vibration during normal operation. A foam gasket forms
a weatherproof seal between the roof material and the sub-
frame of the air conditioner.
Inspect the gasket seal (at least) annually. Check for leaks
and re-tighten the mounting bolts if needed. To prevent dam-
age to the gasket, be careful NOT to
over-tighten
the bolts.
The air conditioner gasket will eventually wear out and need
replacement. To gain access to the bolts, remove the filtered
panel cover on central air systems or the entire air box on
non-central air conditioners.
Heat pump
A heat pump is one base unit that can operate in two modes,
heating or cooling. The travel or flow of the refrigerant is re-
versed depending on which cycle you choose to operate:
• Cooling Mode: Heat is removed from the
inside
air
and released to the
outside
air.
• Heating Mode: Heat is removed from the
outside
air
and released to the
inside
air.
Ducting & Return Air
All heat discharges, registers and return air grills must be free
and clear of obstructions. The adjustable registers are only
intended to
reduce
airflow as needed, they should NOT be
completely closed.
Furnace
The RV furnace installed in the RV is controlled by a thermo-
stat. The furnace requires both 12-volt power and propane
gas for full operation. Make sure you have sufficient power
available before operating your furnace.
NEVER attempt to repair the furnace yourself. ALWAYS have
your furnace maintenance completed by a qualified technician
at least once a year (more often depending on furnace use).
If you have any questions, Contact your dealer
or Grand Design Customer Service.
The furnace should be
inspected periodically
(monthly during the heating
season) for the presence
of soot on the vent. Soot
is formed whenever
combustion is incomplete.
This is a visual warning that
the furnace is operating
in an unsafe manner. If
soot is observed on the
vent, immediately shut the
furnace OFF and contact
a qualified service agency.
Operating the furnace
under this condition could
lead to serious property
damage, personal injury or
loss of life.
To ensure your personal
safety, do not obstruct or
alter the furnace in any
manner. Do not install
screens over the vent for
any reason. Screens will
become restricted and
cause unsafe furnace
operation. For your
safety, only OEM factory
authorized parts are to be
used on your furnace.
WARNING
WARNING
Do not operate the furnace
when the slide rooms are
retracted in the closed
position.
WARNING
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