Carrier 50VL---A- Manual
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Table of Contents:
- Page 2 – INTRODUCTION; Step 1 — Check Equipment; IDENTIFY UNIT; Step 2 — Provide Unit Support; ROOF CURB; CAUTION; SLAB MOUNT; except
- Page 5 – LARGE CURB; SMALL OR LARGE BASE UNIT
- Page 6 – DETAIL A
- Page 7 – Step 3 — Provide Clearances; IMPORTANT; Step 5 — Rig and Place Unit; INSPECTION; WARNING; WARNING; UNIT FALLING HAZARD; WARNING
- Page 8 – Step 6 — Connect Condensate Drain; Step 7 — Install Duct Connections; CONFIGURING UNITS FOR DOWNFLOW; ELECTRICAL SHOCK HAZARD; NOTE
- Page 9 – Horizontal Duct Covers; Step 8 — Install Electrical Connections; UNIT COMPONENT DAMAGE HAZARD
- Page 10 – CONTROL VOLTAGE CONNECTIONS; STANDARD CONNECTION; TRANSFORMER PROTECTION
- Page 11 – Table 2 – Minimum Airflow for Safe Electric Heater Operation (CFM)
- Page 12 – Step 1 — Check for Refrigerant Leaks; CHECKING COOLING CONTROL OPERATION
- Page 13 – fication feature not used)
- Page 14 – SINGLE SPEED COOLING WITH HIGHER; UNIT OPERATION HAZARD; Table 3 – Color Coding for Indoor Fan Motor Leads; CONTINUOUS FAN OPERATION
- Page 21 – LEGEND; SCHEMATIC; CONNECTION WIRING DIAGRAM; IFB
- Page 22 – LADDER WIRING DIAGRAM; IFM
- Page 24 – MAINTENANCE; Air Filter
- Page 25 – MAX DISTANCE BETWEEN TOP OF FAN GRILLE AND BOTTOM OF FAN BLADE; Outdoor Coil, Indoor Coil, and Condensate Drain Pan; Electrical Controls and Wiring
- Page 27 – TROUBLESHOOTING
- Page 28 – Table 10 – Troubleshooting Chart
1
50VL --- A
Performance
t
14 SEER Single --- Packaged Air Conditioner
System with Puron
®
(R --- 410A) Refrigerant
Single and Three Phase
2 --- 5 Nominal Tons (Sizes 24 --- 60)
Installation Instructions
NOTE
:
Read the entire instruction manual before starting the
installation.
NOTE
:
Installer: Make sure the Owner’s Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1--2
. . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVING AND INSTALLATION
2--10
. . . . . . . . . . . . . . . . .
Check Equipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Curb
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Fabricate Ductwork
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rig and Place Unit
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rigging/Lifting of Unit
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connect Condensate Drain
8
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Install Duct Connections
8
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring Units for Downflow (Vertical) Discharge
8
. . . .
Install Electrical Connections
9
. . . . . . . . . . . . . . . . . . . . . . . . .
High--Voltage Connections
9
. . . . . . . . . . . . . . . . . . . . . . . . .
Special Procedures for 208v Operation
10
. . . . . . . . . . . . . . .
Control Voltage Connections
10
. . . . . . . . . . . . . . . . . . . . . . .
Standard Connection
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transformer Protection
10
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PRE--START--UP
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP
12--14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Refrigerant Leaks
12
. . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Adjustments
12
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Cooling Control Operation
12
. . . . . . . . . . . . . . . .
Checking and Adjusting Refrigerant Charge
12
. . . . . . . . . . .
Indoor Airflow and Airflow Adjustments
13
. . . . . . . . . . . . .
Continuous Fan Operation
14
. . . . . . . . . . . . . . . . . . . . . . . .
Cooling Sequence of Operation
14
. . . . . . . . . . . . . . . . . . . . .
MAINTENANCE
24--26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter
24
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Blower and Motor
24
. . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor Coil, Indoor Coil, and Condensate Drain Pan
25
. . .
Outdoor Fan
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Wiring
25
. . . . . . . . . . . . . . . . . . . . .
Refrigerant Circuit
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Evaporator Airflow
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Puron Items
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP CHECKLIST
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
A09033
Fig. 1 -- Unit 50VL--A
SAFETY CONSIDERATIONS
Improper installation adjustment, alteration, service, maintenance,
or use can cause explosion, fire, electrical shock, or other
conditions which may cause death, 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. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes, the
current editions of the National Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the Canadian electrical
Code CSA C22.1.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury. Understand
these 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.
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