VI-MAINTENANCE
WARNING
Failure to follow safety warnings exactly could
result in dangerous operation, serious injury, death
or property damage.
Improper servicing could result in dangerous
operation, serious injury, death, or property damage.
Before servicing, disconnect all electrical power to
the furnace.
Blower
WARNING
The blower access panel must be securely in place
when the blower and burners are operating. Gas
fumes, which could contain carbon monoxide, can
be drawn into living space resulting in personal
injury or death.
Filters
WARNING
If a higheciency lter is being installed as part
of this system to ensure better indoor air quality,
the lter must be properly sized. Higheciency
lters have a higher static pressure drop than
standardeciency glass/foam lters.
If the pressure drop is too great, system capacity
and performance may be reduced. The pressure
drop may also cause the limit to trip more frequently
during the winter and the indoor coil to freeze in the
summer, resulting in an increase in the number of
service calls.
TABLE 22
-
NOTE - After any heavy snow, ice or frozen fog event the
furnace vent pipes may become restricted. Always check
the vent system and remove any snow or ice that may be
obstructing the plastic intake or exhaust pipes.
Electrical
WARNING
Fire Hazard. Use of aluminum wire with this product
may result in a re, causing property damage,
severe injury or death. Use copper wire only with
this product.
WARNING
Failure to use properly sized wiring and circuit
breaker may result in property damage. Size wiring
and circuit breaker(s) per Product Specications
bulletin (EHB) and unit rating plate.
1 -
kVAr
kWh
COMM
V3
V1
V2
P
OFF
MR
EX
1
W
3
2
Check Motor Amp Draw
True RMS Meter
FIGURE 61
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