Carrier Aquazone 50PTH024 Installation, Start-Up And Service Instructions Manual page 2

• HOLIDAY SCHEDULES
• OVERRIDE SCHEDULES
COMPLETE C AND DELUXE D
BOARD SYSTEM TEST . . . . . . . . . . . . . . . . . . . . . 51
Retry Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
LED Fault Indication . . . . . . . . . . . . . . . . . . . . . . . . . 51
Board Default Settings . . . . . . . . . . . . . . . . . . . . . . . 52
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Condensate Drain Pans . . . . . . . . . . . . . . . . . . . . . . 52
Refrigerant System . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Fan Motors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Condensate Drain Cleaning . . . . . . . . . . . . . . . . . . . 52
Air Coil Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Condenser Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . 52
• GRAVITY FLOW METHOD
• FORCED CIRCULATION METHOD
Checking System Charge . . . . . . . . . . . . . . . . . . . . . 53
Refrigerant Charging . . . . . . . . . . . . . . . . . . . . . . . . . 53
Air Coil Fan Motor Removal . . . . . . . . . . . . . . . . . . . 54
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . 54
• UNIT PROTECTION MODULE (UPM)
Freeze Protection Sensors . . . . . . . . . . . . . . . . . . . . 56
Thermostatic Expansion Valves . . . . . . . . . . . . . . . 56
• TXV FAILURE
50PTH, PTV START-UP CHECKLIST. . . . . . . . .CL-1
IMPORTANT: Read the entire instruction manual before
starting installation.
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 functions of
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, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for unbrazing operations. Have fire extinguisher
available for all brazing operations.
It is important to 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 the signal words DANGER, WARNING, CAUTION,
and NOTE. 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.
Electrical shock can cause personal injury and death. Shut off
all power to this equipment during installation. There may be
more than one disconnect switch. Tag all disconnect locations
to alert others not to restore power until work is completed.
This Installation and Start-Up Instructions literature is for Aqua-
zone ™ water source heat pump systems. Water source heat pumps
(WSHP) are single-package horizontally and vertically mounted
units with electronic controls designed for year-round cooling
and heating.
IMPORTANT: The installation of water source heat pump units
and all associated components, parts, and accessories which
make up the installation shall be in accordance with the regula-
tions of ALL authorities having jurisdiction and MUST conform
to all applicable codes. It is the responsibility of the installing
contractor to determine and comply with ALL applicable codes
and regulations.
PRE-INSTALLATION
INSPECTION
Upon receipt of shipment, carefully check the shipment against
the bill of lading. Make sure all units have been received. Inspect
the carton or crating of each unit, and inspect each unit for damage
on both the interior and exterior. Ensure the shipping company
makes proper notation of any shortages or damage on all copies of
the freight bill.
Concealed damage not discovered during unloading must be
reported to the shipping company within 5 days of receipt of
shipment.
NOTE: It is the responsibility of the purchaser to file all necessary
claims with the shipping company.
STORAGE
If the equipment is not needed for immediate installation upon its
arrival at the job site, it should be left in its shipping carton and
stored in a clean, dry area between 50°F and 95°F. Units must only
be stored or moved in the normal upright position as indicated by
the UP arrows on each carton at all times. If unit stacking is re-
quired, stack units as follows:
• Vertical units less than 6 tons, no more than two high
• Horizontal units less than 6 tons, no more than three high
IMPORTANT: Do not stack units larger than 6 tons.
INSTALLATION
Step 1 - Check Jobsite
Installation, operation and maintenance instructions are pro-
vided with each unit. Before unit start-up, read all manuals and
become familiar with the unit and its operation. Thoroughly
check out the system before operation. Complete the inspec-
tions and instructions listed below to prepare a unit for installa-
tion. See Table 1 for unit physical data.
2
WARNING
GENERAL