Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500046-01
Printed in U.S.A.
Form 50VS-1SI
Pg 1
311 10-08
Replaces: New
Installation, Start-Up, and Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . . . .1
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-17
Step 1 — Check Jobsite
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Step 2 — Check Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
• STORAGE
• PROTECTION
• INSPECT UNIT
Step 3 — Locate Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Step 4 — Install Drywall
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Step 5 — Install Cabinet and Riser
. . . . . . . . . . . . . . . . . . .8
• SYSTEM PIPING ARRANGEMENTS
• RISER MATERIAL, SIZING, AND INSTALLATION
• RISER EXPANSION
• RISER CONNECTIONS
• COMMERCIAL WATER LOOP APPLICATION
• GROUND-LOOP HEAT PUMP APPLICATION
• OPEN-LOOP GROUND WATER SYSTEMS
Step 6 — Wire Field Power Supply Connections
. . . .13
• ELECTRICAL-LINE VOLTAGE
• POWER CONNECTION
• 208/230-VOLT OPERATION
Step 7 — Wire Field Control Connections
. . . . . . . . . .15
Step 8 — Clean and Flush System
. . . . . . . . . . . . . . . . . .15
Step 9 — Install Hose Kit
. . . . . . . . . . . . . . . . . . . . . . . . . . .15
Step 10 — Install Chassis into the Cabinet
. . . . . . . . .16
Step 11 — Install Return Panel
. . . . . . . . . . . . . . . . . . . . .16
Step 12 — Install Supply Grille
. . . . . . . . . . . . . . . . . . . . .17
PRE-START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17,18
System Checkout
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
FIELD SELECTABLE INPUTS
. . . . . . . . . . . . . . . . . . . . 18,19
DIP Switch Settings and Operation
. . . . . . . . . . . . . . . . .18
Standard 24-vac Sequence of Operation
. . . . . . . . . . . .19
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19,20
Operating Limits
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Lockout Mode
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Water Coil Maintenance
. . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Filters
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Condensate Drain
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Compressor
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Fan Motors
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Evaporator Coil
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Cabinet
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Refrigerant System
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,22
Lockout Modes
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
START-UP CHECKLIST
. . . . . . . . . . . . . . . . . . . . . . .CL1,CL2
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 per-
sonnel. 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.
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.
GENERAL
This installation and start-up instructions literature is for
Aquazone™ water source heat pump systems.
The 50VS water source heat pump (WSHP) is a vertically
stacked unit with electronic controls designed for year-round
cooling and heating.
IMPORTANT: Read the entire instruction manual before
starting installation.
WARNING
Electrical shock can cause personal injury or death. Before
installing or servicing system, always turn off main power
to system. There may be more than one disconnect switch.
Turn off accessory heater power if applicable.
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 regulations of ALL authorities having jurisdiction and
MUST conform to all applicable codes. It is the responsi-
bility of the installing contractor to determine and comply
with ALL applicable codes and regulations.
AQUAZONE™
50VS
Vertical Stack Water Source Heat Pump
with PURON® (R-410A) Refrigerant
