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Carrier 48HC-D09 User's Information Manual

Carrier 48HC-D09 User's Information Manual

Sigle-package rooftop unit (rtu) gas heating/electric cooling units with r-410a refrigerant

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User's Information Manual
NOTE:
Read the entire
instruction manual
before
starting
the installation.
ELECTRICAL
SHOCK, FIRE
OR EXPLOSION
HAZARD
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 unit.
• When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
• Verify proper operation after servicing.
NOTE TO INSTALLER:
This manual should be left with the equipment
owner.
TABLE
OF CONTENTS
PAGE
SAFETY
CONSIDERATIONS
....................
1
TO LIGHT
UNIT
..............................
3
TO SHUT UNIT OFF
...........................
4
ROUTINE
MAINTENANCE
& (:ARE
FOR THE EQUIPMENT
OWNER
.................
5
BEFORE
YOU CALL FOR SERVICE
.............
7
REGULAR
DEALER
MAINTENANCE
............
8
SAFETY CONSIDERATIONS
Improper
installation,
adjustment,
alteration,
service,
maintenance,
or use can cause
fire,
electrical
shock,
or
other
conditions
which
may
cause
personal
injury
or
property
damage.
Consult
a qualified
installer,
service
agency
or your
distributor
or branch
for information
or
assistance.
The
qualified
installer
or agency
must
use
factory-authorized
kits
or accessories
when
modifying
this product. Refer to the individual instructions packaged
with the kits or accessories when installing.
Follow
all safety codes and wear safety glasses.
Have fire
extinguisher
available.
Read these instructions
thoroughly
and follow
all warnings
or cautions
attached
to the unit.
Consult
local
and state building
codes
and Sheet
Metal
and Air Conditioning
National
Association
(SMACNA)
for special
installation
requirements.
Recognize
safety
information.
This
is the
safety-alert
symbol
A'x. When
you see this symbol
on the unit or in
instructions
and
manuals,
be
alert
to the potential
for
personal
injury.
Understand
the signal
words
DANGER,
WARNING,
and CAUTION.
These
words
are used with
the
safety-alert
symbol.
DANGER
identifies
the most
serious hazards,
which will result in severe
personal
injury
or death. WARNING
signifies
hazards,
which
could result
in personal
injury or death.
CAUTION
is used to identify
unsafe
practices,
which
may
result
in minor
personal
injury or product
and property
damage.
NOTE
is used to
highlight
suggestions
which
will
result
in
enhanced
installation,
reliability,
or operation.
Should
the gas supply
fail to shut off or if overheating
occurs,
shut off the gas valve
to the furnace
(see Fig. 15)
before
shutting
off the electrical
supply
FIRE, EXPLOSION
HAZARD
Failure to follow this warning could result in personal
injury or death.
What to do if you smell gas:
• Leave the building.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach your gas supplier, call the fire
department.
Installation
and service
must be performed
by a
qualified installer, service agency or the gas supplier.

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Summary of Contents for Carrier 48HC-D09

  • Page 1 User's Information Manual this product. Refer to the individual instructions packaged NOTE: Read the entire instruction manual before starting the installation. with the kits or accessories when installing. Follow all safety codes and wear safety glasses. Have fire extinguisher available. Read these instructions thoroughly and follow...
  • Page 2 • DO Make sure: 1. All flue and vent connections are clear and free obstructions, are leak free, and not damaged. FIRE, EXPLOSION HAZARD 2. Duct connections are leak free and physically sound. Failure to follow this warning could result in personal 3.
  • Page 3 TO LIGHT UNIT [MA,N i[ Step 1 1 Set room thermostat/unit controller to the lowest temperature setting and set the SYSTEM ..oF,¢_ ?_, switch to HEAT or AUTO position. See Fig. 1. C07831 Fig. 5 - RTU Main Disconnect - Electrical Supply Step 4 1 Remove the gas component...
  • Page 4 Single-Stage Two-Stage 300k BTU/Hr RTU gas valve Two-Stage RTU gas valve On/Off C07381 Fig. 13 - Thermostat/Unit Controller _'--Switch 4-- sCni/t Off C08469 Fig. 9 - Single- and Two-Stage RTU Gas Valves FIRE, EXPLOSION HAZARD Step 6 1 Move the RTU gas valve on/off switch to Failure to follow this warning could result in personal the ON position.
  • Page 5 Step 3 1 Turn off the electrical supply to the unit by MAIN _.__[["-] switching the RTU main disconnect to off. Then, ensure personal safety by installing a lockout tag on the disconnect. C07336 Fig. 20 - RTU Main Disconnect - Electrical Supply ROUTINE...
  • Page 6 Table 1 - Replacement Filters - Size and Quantity Indoor air filter(s) should be checked every 3 or 4 weeks (application dependant) and changed or cleaned when 48TC/580J 48HC/581J Size Capacity necessary. See Fig. 21 or Fig. 22 (depending on the size of 3 tons 16 x 25 (2) the unit) for air filter access panel location.
  • Page 7 Proceed a sfollowsto inspect t hecombustion areaand BEFORE YOU CALL SERVICE, power-venting system of yourunit. CHECK PROBLEMS THAT • Turn off gas supply to your unit. CAN BE EASILY SOLVED • Turn off electrical power to your unit; install lockout tag. If insufficient heating or cooling...
  • Page 8 REGULAR DEALER MAINTENANCE • Inspection and if required, cleaning of the condenser and evaporator coils. Heat Exchanger • Inspection, and if required, cleaning of the condensate NOTE: To ensure dependable efficient heating drain pan. operation, the heat exchanger should be checked by a •...