Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500104-01
Printed in U.S.A.
Form 50PT-5SI
Pg 1
1218
6-14
Replaces: NEW
Installation, Start-Up, and Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . 1,2
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-24
Step 1 — Check Jobsite
. . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2 — Check Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3 — Locate Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 — Mount the Unit
. . . . . . . . . . . . . . . . . . . . . . . . . 7
• HORIZONTAL UNIT
• VERTICAL UNITS
Step 5 — Check Duct System
. . . . . . . . . . . . . . . . . . . . 7
Step 6 — Install Condensate Drain
. . . . . . . . . . . . . . . 7
Step 7 — Pipe Connections
. . . . . . . . . . . . . . . . . . . . . . 8
• WATER LOOP APPLICATIONS
• GROUND-WATER APPLICATIONS
• GROUND-LOOP APPLICATIONS
• INSTALLATION OF SUPPLY AND RETURN HOSE
KIT
Step 8 — Wire Field Power Supply
. . . . . . . . . . . . . . 10
Step 9 — Wire Field Controls
. . . . . . . . . . . . . . . . . . . . 21
• CONSTANT TORQUE MOTORS (ECM)
• SAFETY DEVICES AND COMPLETE C CONTROL
Operate ECM Interface Board
. . . . . . . . . . . . . . . . . . . 23
PRE-START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
System Checkout
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25-27
Operating Limits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Scroll Compressor Rotation
. . . . . . . . . . . . . . . . . . . . . 25
Unit Start-Up Cooling Mode
. . . . . . . . . . . . . . . . . . . . . 25
Unit Start-Up Heating Mode
. . . . . . . . . . . . . . . . . . . . . 25
Flow Regulation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Flushing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Antifreeze
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Cooling Tower/Boiler Systems
. . . . . . . . . . . . . . . . . . 27
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems
. . . . . . . . . . . . . . . . 27
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27,28
Power Up Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Units with Aquazone™ Complete C Control
. . . . . 27
Units with Aquazone Deluxe D Control
. . . . . . . . . . 27
Units with Hot Gas Reheat Option
. . . . . . . . . . . . . . . 27
COMPLETE C AND DELUXE D BOARD
SYSTEM TEST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Retry Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
LED Fault Indication
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Board Default Settings
. . . . . . . . . . . . . . . . . . . . . . . . . . 28
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28-30
Filters
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Water Coil
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Condensate Drain Pans
. . . . . . . . . . . . . . . . . . . . . . . . . 28
Refrigerant System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Compressor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fan Motors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Page
Condensate Drain Cleaning
. . . . . . . . . . . . . . . . . . . . . 29
Air Coil Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Condenser Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Checking System Charge
. . . . . . . . . . . . . . . . . . . . . . . 29
Refrigerant Charging
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Air Coil Fan Motor Removal
. . . . . . . . . . . . . . . . . . . . . 30
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . 30-33
Thermistor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Control Sensors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Thermostatic Expansion Valves
. . . . . . . . . . . . . . . . . 30
Moisture Check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
50PTH,PTV START-UP
CHECKLIST
. . . . . . . . . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical
components. Only trained and qualified service personnel
should install, repair, 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, ob-
serve precautions in the literature, tags and labels attached to
the unit, and other safety precautions that may apply.
Improper installation, adjustment, alteration, service, main-
tenance, or use can cause explosion, fire, electrical shock or
other conditions which may cause personal injury or property
damage. Consult a qualified installer, service agency, or a local
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 individ-
ual instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions thoroughly and
follow all warnings or cautions attached to the unit. Consult
local building codes and the National Electrical Code (NEC)
for special installation requirements.
Understand the signal words — DANGER, WARNING,
and CAUTION. DANGER identifies the most serious hazards
which will result in severe personal injury or death.
WARNING signifies hazards that could result in personal inju-
ry or death. CAUTION is used to identify unsafe practices,
which would result in minor personal injury or product and
property damage.
Recognize safety information. This is the safety-alert
symbol (
). When this symbol is displayed on the unit and in
instructions or manuals, be alert to the potential for personal
injury.
IMPORTANT: Read the entire instruction manual before
starting installation.
Aquazone™
50PTH, PTV024-070
Two-Stage Water Source Heat Pumps
with Puron
®
Refrigerant (R-410A)
