2
6-563.7
sPeCIAl PreCAuTIons
sPeCIAl PreCAuTIons
THe InsTAllATIon And mAInTenAnCe InsTruCTIons In
THIs mAnuAl musT Be folloWed To ProvIde sAfe,
effICIenT And TrouBle-free oPerATIon. In AddITIon,
PArTICulAr CAre musT Be eXerCIsed regArdIng THe
sPeCIAl PreCAuTIons lIsTed BeloW. fAIlure To
ProPerlY Address THese CrITICAl AreAs Could
resulT In ProPerTY dAmAge or loss, PersonAl
InJurY, or deATH. THese InsTruCTIons suBJeCT To
AnY more resTrICTIve loCAl or nATIonAl Codes.
HAzArd InTensITY levels
1. dAnger: Indicates an imminently hazardous situation
which, if not avoided, WILL result in death or serious injury.
2. WArnIng: Indicates a potentially hazardous situation
which, if not avoided, COULD result in death or serious injury.
3. CAuTIon: Indicates a potentially hazardous situation which,
if not avoided, MAY result in minor or moderate injury.
4. ImPorTAnT: Indicates a situation which, if not avoided,
MAY result in a potential safety concern.
DANGER
Appliances must not be installed where they may be exposed
to a potentially explosive or flammable atmosphere.
WARNING
1. Gas fired heating equipment must be vented - do not
operate unvented.
2. A built-in power exhauster is provided - additional external
power exhausters are not required or permitted.
3. Unit must not be common vented with other appliances.
4. If an existing heater is being replaced, the vent system
must meet the requirements specified in this manual.
Improperly sized or constructed venting systems can
result in vent gas leakage or the formation of condensate.
Failure to follow these instructions can result in injury
or death.
5. In locations where the outside air temperature falls below
freezing, icicles may form on horizontal vent terminations
from the condensate formed in the vent system. Locate the
vent termination where a falling icicle will not be a hazard.
6. Installation must conform with local building codes or in
the absence of local codes, the National Fuel Gas Code,
ANSI Z223.1 (NFPA 54) - latest edition. In Canada
installation must be in accordance with CSA-B149.1.
7. Do not install PVC pipe near high temperature sources of
heat exceeding 140°F that could damage the pipe and
cause hazardous leaks of products of combustion or
water into the space.
8. All field gas piping must be pressure/leak tested prior to
operation. Never use an open flame. Use a soap solution
or equivalent for testing.
9. Gas pressure to appliance controls must never exceed
14" W.C. (1/2 psi).
10. To reduce the opportunity for condensation, the minimum
sea level input to the appliance, as indicated on the serial
plate, must not be less than 5% below the rated input, or
5% below the minimum rated input of dual rated units.
11. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
12. All appliances must be wired strictly in accordance with
the wiring diagram furnished with the appliance. Any
wiring different from the wiring diagram could result in a
hazard to persons and property.
WARNING
13. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
14. Ensure that the supply voltage to the appliance, as
indicated on the serial plate, is not 5% greater than or 5%
less than the rated voltage.
15. When servicing or repairing this equipment, use only
factory-approved service replacement parts. A complete
replacements parts list may be obtained by contacting
the factory. Refer to the rating plate on the appliance for
complete appliance model number, serial number, and
company address. Any substitution of parts or controls not
approved by the factory will be at the owner's risk.
CAUTION
1. All literature shipped with this unit should be kept for
future use for servicing or service diagnostics. Do not
discard any literature shipped with this unit.
2. Consult piping, electrical, and venting instructions in this
manual before final installation.
3. Do not attach ductwork, air filters, or polytubes to any
propeller unit heater.
4. Clearances to combustible materials are critical. Be sure
to follow all listed requirements.
5. Heaters are designed for use in heating applications with
ambient temperatures between 40°F and 80°F. Heaters
should not be used in applications where the heated
space temperature is below 40°F. The combination of low
space and combustion air temperatures may result in
condensate freezing in the secondary heat exchanger
and/or condensate drain.
6. Do not install unit outdoors.
7. In garages or other sections of aircraft hangars such as
offices and shops that communicate with areas used for
servicing or storage, keep the bottom of the unit at least
7' above the floor unless the unit is properly guarded to
provide user protection from moving parts and interior
surface temperatures that can cause serious burns if
touched. In parking garages, the unit must be installed in
accordance with the standard for parking structures ANSI/
NFPA 88A, and in repair garages the standard for repair
garages NFPA 30A (formerly NFPA 88B). In Canada,
installation of heaters in airplane hangars must be in
accordance with the requirements of the enforcing
authority, and in public garages in accordance with the
current CSA-B149 codes.
8. In aircraft hangars, keep the bottom of the unit at least 10'
from the highest surface of the wings or engine enclosure
of the highest aircraft housed in the hangars and in
accordance with the requirements of the enforcing
authority and/or NFPA 409 - latest edition.
9. Installation of units in high humidity or salt water
atmospheres will cause accelerated corrosion resulting in
a reduction of the normal life of the units.
10. Do not install units below 7' measured from the bottom of
the unit to the floor in commercial applications (unless unit
is properly guarded to provide user protection from
moving parts and interior surface temperatures that can
cause serious burns if touched) and 5' measured from the
bottom of the unit to the floor in residential applications
(sizes 110 and smaller only).
11. Be sure no obstructions block air intake and discharge of
unit heaters.
