View and Download Carrier 50YQ installation, start-up and service instructions manual online. Single-package Heat Pumps. 50YQ Heat Pump pdf manual download. Also for: 50yq024, 50yq030, 50yq036, 50yq042, 50yq048, 50yq060. View and Download Carrier HEAT PUMP 50JS user manual online. Single-Packaged 50Hz Electric Heat Pump Units. HEAT PUMP 50JS Heat Pump pdf manual download.
Single-package heat pumps, Installation, start-llp and service instructior
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Numb^One
AirConditbning
Maker
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Division of
Carrier Cotporalio
installation, Start-llp
and Service instructior^
Carrier Parkway • Syracuse NY 13221
Single-Package Heat Pumps
INDEX
Page
1
, 1-4
. 1
SAFETY CONSIDERATIONS .........................
INSTALLATION.................................................
Step 1 — Check Equipment and Jobsite
• UNPACKAGE UNITS
• INSPECT EQUIPMENT
• COMPLETE OR CONSIDER SYSTEM
REQUIREMENTS
Step 2 — Mount Heat Pump Package ..
• ON THE GROUND: MOUNT HEAT
PUMP ON AN ELEVATED FRAME
POSITIONED ON A LEVEL CON
CRETE PAD
• ON THE ROOF: MOUNT UNIT ON A
LEVEL PLATFORM OR FRAME
Step 3 — Make Ductwork Connections
• CONNECT SUPPLY AND RETURN
AIR DUCTWORK
^
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning
equipment can be hazardous due to system pressure
and electrical components. Only trained and quali
fied service personnel should install, repair or
service air conditioning equipment.
Untrained personnel can perform basic main
Carrier Heat Pump 50yq-024-300 User Manual Download
tenance functions of cleaning coils and filters and
replacing filters. All other operations should be per
formed by trained service personnel. When working
on air conditioning equipment, observe precautions
in the literature, tags and labels attached to the unit
and other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and
work gloves. Use quenching cloth for brazing oper
ations. Have fire extinguisher available for all braz
ing operations.
Step 4 — Provide for Cooling Cycle
Condensate Disposal for Cooling Cycle
... 4
• CONNECT DRAIN LINE
^Step 5 — Make Electrical Connections
... 4
• INSTALL A BRANCH CIRCUIT
DISCONNECT PER NEC
• ROUTE LINE POWER WIRES INTO
UNIT
• CONNECT GROUND LEAD TO GROUND
LUG IN SPLICE BOX FOR SAFETY
• SET INDOOR FAN MOTOR SPEED
• ROUTE CONTROL POWER WIRES
• ELECTRIC HEATER INSTALLATION
START-UP.............................................................5-7
SERVICE .............................................................7-14
V TROUBLESHOOTING.................................. 15, 16
INSTALLATION
Step 1 — Check Equipment and Jobsite
UNPACKAGE UNITS — Move units to final loca
tion. Slide units from cartons taking special care nob
to damage unit.
Carrier Heat Pump 50yq-024-300 User Manual 2017
INSPECT EQUIPMENT — File claim with ship
ping company if shipment is damaged or incomplete.
COMPLETE OR CONSIDER SYSTEM RE
QUIREMENTS before installing the 50YQ units.
Consult local building codes and National Elec
trical
Code
(NEC)
for
special
installation
requirements.
Provide sufficient space for coil airflow clearance,
wiring, and servicing unit. (See Fig. 1.) Locate unit
where supply and return air ducts can be con
veniently brought out to unit duct connections.
Unit may be placed with duct side as close to
building as condensate drain, top removal, duct con
nections and power connections permit. Position
unit so water or ice from roof does not drop directly
on top of unit or in front of coil. Make provisions for
condensate drainage and defrost water disposal.
Roof installation method for 50YQ depends on
building construction and special requirements of
local building codes. Ensure that roof can support
unit weight. Protect unit from prevailing winds to
ensure adequate defrost.
© Carrier Corporation 1979
781
Form 50YQ-3SI
- Single-Package Heat Pumps
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F¡g. 3 — Heat Pump Mounting Frame
Flanges are provided on unit for rectangular duct
connections. Figure 4 shows a typical duct system
with 50YQ installed. Do not operate unit longer
than 5 minutes without ductwork. If necessary, refer
to Carrier System Design Manual, Part 2, for sys
tem air duct design. When designing and installing
ductwork, consider the following:
a. When connecting ductwork to unit, do not drill
holes in area shown below. Coil may be damaged.
b. Install field-supplied filters in return air duct
work. Recommended sizes for filters are shown
in Table I.
c. Avoid abrupt duct size increases and reductions.
■d. Use flexible connectors between ductwork and
unit to prevent transmission of vibration. When
electric heater is installed, use fireproof canvas
e.
(or similar heat resistant material) connector be
tween ductwork and unit discharge connection.
If flexible duct is used, insert a sheetmetal sleeve
inside duct. Design this connector or sleeve so
that it extends 24 in. from electric heater element.
Size ductwork for cooling air quantity (cfm). The
minimum air quantity for proper heating/ cooling
operation and electric heater operation is 400 cfm
per ARI cooling ton as listed below:
UNIT 50YQ
MIN CFM
024
8 3 3
030
1 0 0 0
036
1 1 8 3
042
1 3 6 6
048
1 6 3 3
060
1 9 3 3
Heater limit switches may trip at air quantities
below those recommended.
Insulate and make weatherproof all external
ductwork. Insulate and cover with a vapor
barrier all ductwork passing thru unconditioned
spaces. Follow latest SMACNA (Sheet Metal
and
Air
Conditioning
Contractors
National
Association) and NESCA (National Environ
mental Systems Contractors Association) mini
mum installation standards for residential heat
ing and air conditioning systems.