Carrier 50QQ User Manual
Installation, start-up and service instructions, 50qq single-package heat pumps, Page
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HEATING A COOLING
50QQ
Single-Package Heat Pumps
#
Installation, Start-Up and Service Instructions
CONTENTS
Page
SAFETY CONSIDERATION................................................. 1
INSTALLATION..................................................................1-7
Step 1—Check Equipment and Jobsite............................. 1
• UNPACK UNIT
• INSPECT EQUIPMENT
• COMPLETE SYSTEM REQUIREMENTS
Mount Unit..............................................................
• ON THE GROUND
• ON THE ROOF
Make Ductwork Connections...............................
• CONNECT RETURN AND SUPPLY AIR
DUCTWORK
Step 4—Provide for Cooling Cycle
Condensate Disposal...................................................... 4
• CONNECT DRAIN LINE
Step
5—
Make Electrical Connections............................... 5
• INSTALL A BRANCH CIRCUIT DISCONNECT PER
NEC
• ROUTE LINE POWER LEADS INTO UNIT
• CONNECT GROUND LEAD TO GROUND LUG
• SET INDOOR FAN MOTOR SPEED
• ROUTE CONTROL POWER WIRES
• ACCESSORY DUCT FLANGE KIT INSTALLATION
• ELECTRIC HEATER INSTALLATION
START-UP............................................................................ 8
SERVICE...........................................................................8-15
SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be
hazardous due to system pressure and electrical compo
nents. Only treuned and qualified service personnel should
install or service air conditioning equipment.
Untrained personnel can perform basic maintenance func
tions such as cleaning coils and filters and replacing filters.
All other operations should be performed by trained service
personnel. When working on air conditioning equipment,
observe precautions in the literature and on tags and labels
attached to unit.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have
fire extinguisher available.
A WARNING
Before performing service or maintenance operations on
system, turn off main power switches to unit. Turn off
accessory heater power switch if applicable. Electric
shock can cause personal injury.
INSTALLATION
Step 1—Check Equipment and Jobsite
UNPACK UNIT—Move unit to final location. Lift off car
ton tEiking special care not to damage unit.
1-5/8” DIAM KNOCKOUT ELECTRIC HEAT
> OUTDOOR AIRFLOW
RIGHT-SIDE VIEW - MODEL 018 048(TYPICAL)
DUCT FLANGE
FOR 14”X28”
CONNECTION
A88061
7/8”
CONNECTOR^
1-3/8”DIAM
KNOCKOUT
LINE WIRING
CONN
1-5/8”DIAM KNOCKOUT
ELECTRIC HEAT
RIGHT - SIDE VIEW • MODEL 060
Fig. 1 —Dimensions and Connections
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Bookl 1 I 4
PC 101 Catalog No 565-097
Printed in USA
Form 50QQ-8Si 11/87 Pg 1
Replaces: 50QQ-7Si
Tab i5a 15a