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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500034-01
Printed in U.S.A.
Form 50H,V-10SI
Pg 1
7-07
Replaces: 50H,V-9SI
Book 1
4
Tab
5a 5a
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 — Location of Unit
. . . . . . . . . . . . . . . . . . . . . . . 10
Step 4 — Mounting the Unit
. . . . . . . . . . . . . . . . . . . . . 10
• HORIZONTAL UNITS
• VERTICAL UNITS
Step 5 — Duct System
. . . . . . . . . . . . . . . . . . . . . . . . . . 10
• SOUND ATTENUATION
• EXISTING DUCT SYSTEM
Step 6 — Condensate Drain
. . . . . . . . . . . . . . . . . . . . . 11
• HORIZONTAL UNITS
• VERTICAL UNITS
• VENTING
Step 7 — Piping Connections
. . . . . . . . . . . . . . . . . . . 11
• WATER LOOP APPLICATIONS
• GROUND-LOOP APPLICATIONS
• GROUND-WATER APPLICATIONS
Step 8 — Field Power Supply Wiring
. . . . . . . . . . . . 12
• POWER CONNECTION
• SUPPLY VOLTAGE
• EXTERNAL LOOP POWER CONNECTION
• 208-VOLT OPERATION
Step 9 — Field Control Wiring
. . . . . . . . . . . . . . . . . . . 14
• THERMOSTAT CONNECTIONS
• WATER FREEZE PROTECTION
• AIR COIL FREEZE PROTECTION
• ACCESSORY CONNECTIONS
• WATER SOLENOID VALVES
PRE-START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-30
System Checkout
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Airflow and External Static Pressure
. . . . . . . . . . . 24
FIELD SELECTABLE INPUTS
. . . . . . . . . . . . . . . 30-33
Complete C Control Jumper Settings
. . . . . . . . . . . 30
Complete C Control DIP Switches
. . . . . . . . . . . . . . 30
Deluxe D Control Jumper Settings
. . . . . . . . . . . . . 30
Deluxe D Control DIP Switches
. . . . . . . . . . . . . . . . 30
Units with Modulating Hot Water Reheat
(HWR) Option
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Deluxe D Control Accessory Relay
Configurations
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33,34
Operating Limits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Start Up System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Scroll Compressor Rotation
. . . . . . . . . . . . . . . . . . . . . 33
Unit Start-Up Cooling Mode
. . . . . . . . . . . . . . . . . . . . . 33
Unit Start-Up Heating Mode
. . . . . . . . . . . . . . . . . . . . . 33
Page
Flow Regulation
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Flushing
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Antifreeze
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Cooling Tower/Boiler Systems
. . . . . . . . . . . . . . . . . . 34
Ground Coupled, Closed Loop and Plateframe
Heat Exchanger Well Systems
. . . . . . . . . . . . . . . . 34
OPERATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35,36
Power Up Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Units with Aquazone Complete C Control
. . . . . . . 35
Units with Aquazone Deluxe D Control
. . . . . . . . . . 35
Units with HWR Option
. . . . . . . . . . . . . . . . . . . . . . . . . . 35
SYSTEM TEST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36,37
Test Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Retry Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Aquazone Deluxe D Control LED Indicators
. . . . . 36
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37,38
Filters
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Water Coil
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condensate Drain Pans
. . . . . . . . . . . . . . . . . . . . . . . . . 37
Refrigerant System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condensate Drain Cleaning
. . . . . . . . . . . . . . . . . . . . . 37
Air Coil Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Condenser Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Checking System Charge
. . . . . . . . . . . . . . . . . . . . . . . 38
Refrigerant Charging
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Air Coil Fan Motor Removal
. . . . . . . . . . . . . . . . . . . . . 38
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . 39-41
Thermistor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Control Sensors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
50HQL,VQL 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 compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions 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 precau-
tions 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 your
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.
IMPORTANT: Read the entire instruction manual before
starting installation.
AQUAZONE™
50HQL072-120
50VQL080-300
Water Source Heat Pump Units