Carrier 50CR- Manual
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Table of Contents:
- Page 2 – except
- Page 3 – Roof Curb for Small Cabinet; UNIT SIZE
- Page 4 – ode
- Page 8 – DETAIL
- Page 10 – TOP COVER
- Page 11 – Step 7—Install Electrical Connections; WARNING; UNIT COMPONENT DAMAGE HAZARD; CAUTION
- Page 16 – GROUND SCREW; NOTE
- Page 21 – HPS – High Pressure Switch; LEGEND; HPS – High Pressure Switch
- Page 23 – Table 3—; Table 4—; FILTER SIZE; Table 5—; CFM
- Page 24 – Table 6—; MAINTENANCE; ELECTRICAL SHOCK HAZARD; UNIT OPERATION HAZARD
- Page 25 – Infinity Top
- Page 26 – Balance Point Worksheet; Building Heat Loss, 1000BTUH; Based on Entering Indoor Air of 70 Deg. F and Rated CFM; Step 6—Refrigerant Circuit; obstructions, and that the air filter is clean.; Step 9—Pressure Switches; systems. R--22 pressure switches must not be used as replacements
- Page 27 – The Copeland scroll compressor uses Mobil 3MA POE oil. This; refrigerant cylinders contain a dip tube to allow liquid
- Page 28 – : Because these switches are attached to refrigeration system; : There is only one stub tube used with liquid header, and on; TROUBLESHOOTING; Unit Top; Detail A
1
50CR
Infinity
t
Single--Packaged Heat Pump Units
With Puron
®
(R--410A) Refrigerant
Sizes 024--060
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
2
. . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVING AND INSTALLATION
2--16
. . . . . . . . . . . . . . . .
Check Equipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Curb
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground Mount
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rig and Place Unit
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Introduction
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use of Rigging Bracket
7
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Select and Install Ductwork
9
. . . . . . . . . . . . . . . . . . . . . . . . . .
Converting Horizontal Discharge Units to Downflow
(Vertical) Discharge Units
9
. . . . . . . . . . . . . . . . . . . . . . . . .
Provide for Condensate Disposal
9
. . . . . . . . . . . . . . . . . . . . .
Install Electrical Connections
11
. . . . . . . . . . . . . . . . . . . . . . .
High--Voltage Connections
11
. . . . . . . . . . . . . . . . . . . . . . .
Routing Power Leads Into Unit
11
. . . . . . . . . . . . . . . . . . . .
Connecting Ground Lead to Ground Screw
11
. . . . . . . . . .
Routing Control Wires
11
. . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Installation
16
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Procedures for 208--v Operation
16
. . . . . . . . . . . . .
PRE--START--UP
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unit Start--Up
17--23
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sequence of Operation
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check for Refrigerant Leaks
20
. . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Adjustments
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Cooling and Heating Control Operation
20
. . . . .
Checking and Adjusting Refrigerant Charge
22
. . . . . . . . . .
Refrigerant Charge
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
No Charge
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Low Charge Cooling
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
To Use Cooling Charging Charts
22
. . . . . . . . . . . . . . . . . . .
Indoor Airflow and Airflow Adjustments
22
. . . . . . . . . . . .
Defrost Control
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quiet Shift
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost
22
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Emergency Heat/Cool Mode
22
. . . . . . . . . . . . . . . . . . . . . . . .
A05307
Fig. 1 -- Unit 50CR
MAINTENANCE
24--28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Blower and Motor
25
. . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor Coil, Indoor Coil, and Condensate Drain Pan
25
. . . .
Outdoor Fan
25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Wiring
26
. . . . . . . . . . . . . . . . . . . . . .
Refrigerant Circuit
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Airflow
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Metering Devices–TXV & AccuRater
®
Piston
26
. . . . . . . . . .
Pressure Switches
26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss--of--Charge Switch
27
. . . . . . . . . . . . . . . . . . . . . . . . . . .
High--Pressure Switch
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copeland Scroll Compressor (Puron
®
Refrigerant)
27
. . . . . . .
Refrigerant System
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Oil
27
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Systems on Roofs with Synthetic Materials
27
. . .
Liquid--Line Filter Drier
28
. . . . . . . . . . . . . . . . . . . . . . . . .
Puron (R--410A) Refrigerant Charging
28
. . . . . . . . . . . . . .
System Information
28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss--of--Charge Switch
28
. . . . . . . . . . . . . . . . . . . . . . . . .
Check Defrost Thermostat
28
. . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
28
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP CHECKLIST
28
. . . . . . . . . . . . . . . . . . . . . . . . . . .
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Summary
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