AAON M2-036 - Manual (Page 11)

11
1. Use only with type of the gas approved
for the furnace. Refer to the furnace
rating plate.
2. Provide adequate combustion ventilation
air to the furnace. If a vent duct
extension is used, a class III approved
vent is required. See the Locating Units
and Gas Heating sections of the
Installation section of the manual.
3. Always install and operate furnace
within the intended temperature rise
range and duct system external static
pressure (ESP) as specified on the unit
nameplate.
4. The supply and return air ducts must be
derived from the same space. It is
recommended ducts be provided with
access panels to allow inspection for
duct tightness. When a down flow duct
is used with electric heat, the exhaust
duct should be an L shaped duct.
5. Clean furnace, duct and components
upon completion of the construction
setup. Verify furnace operating
HOT PARTS
Disconnect all power, close all
isolation valves and allow equipment
to cool before servicing equipment to
prevent serious injury. Equipment
may have multiple power supplies.
Electric resistance heating elements
and hot water or steam heating coils
may have automatic starts. Hot water
will circulate even after power is off.
WARNING
PVC (Polyvinyl Chloride) and CPVC
(Chlorinated Polyvinyl Chloride) are
vulnerable to attack by certain
chemicals. Polyolester (POE) oils
used with R-410A and other
refrigerants, even in trace amounts,
in a PVC or CPVC piping system will
result in stress cracking of the piping
and fittings and complete piping
system failure.
CAUTION
Do not weld or cut foam panel with
plasma cutters or a cutting torch –
When burnt the foam produces
dangerous fumes.
WARNING
Do not work in a closed area where
refrigerant or nitrogen gases may be
leaking. A sufficient quantity of
vapors may be present and cause
injury or death.
WARNING
Never attempt to open an access
door or remove a panel while the unit
is running. Pressure in the unit can
cause excessive force against the
panel.
Ensure that sufficient dampers will be
open to provide air path before fan is
allowed to run.
WARNING
WARNING