Carrier 50QQ Installation, Start-Up And Service Instructions Manual

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
Step 2—Mount Unit. 2
• ON THE GROUND
• ON THE ROOF
Step 3—Make Ductwork Connections. 2
• 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 trained 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 taking special care not to damage unit.
OUTDOOR AIRFLOW
RIGHT-SIDE VIEW - MODEL 018 048(TVPICAL)
A88061
DUCT FLANGE
FOR 14" X 28"
CONNECTION
7/8"
CONNECT!
1-3/8"DIAM
KNOCKOUT
LINE WIRING
CONN
'1-5/8"DIAM KNOCKOUT
ELECTRIC HEAT
RIGHT - SIDE VIEW - MODEL 080
A88062
Fig. 1—Dimensions and Connections
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Bookl 1 I 4 PC 101 Catalog No 565-097 Printed in USA Form 50QQ-8SI 11/87 Pg 1 Replaces: 50QQ-7SI
Tab 15a 15a