6 | Standard WW/WT package WW & WT Models
WW & WT Models8733943362 (2016/08) Subject to change without prior notice
STANDARD WW/WT PACKAGE
Figure # 1
[1] WW / WT Series Water-to-Water
[2] Installation and Operation Manual
GENERAL DESCRIPTION
WW/WT Series Water-to-Water Heat Pumps provide the
best combination of performance and efficiency
available. All units are performance certified to American
Heating and Refrigeration Institute (AHRI) ISO Standard
13256-2. All WW/WT Water-to-Water Heat Pumps
conform to UL1995 standard and are certified to CAN/
CSA C22.2 No 236 by Intertek-ETL. The Water-to-Water
Heat Pumps are designed to operate with entering fluid
temperature source between 30°F to 90°F in the heating
mode and between 50°F to 110°F in the cooling mode.
MOVING AND 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.
Units must only be stored or moved in the normal
upright position as indicated by the “UP” arrows on each
carton at all times.
.
INITIAL INSPECTION
Please inspect the product carefully for any defects or
discrepancies.
Should you identify any issue, contact the Bosch
Wholesaler / Distributor you purchased the unit from.
LOCATION
Locate the unit in an indoor area that allows easy access
to the panels, and has enough room for service
personnel to perform maintenance or repair. Provide
sufficient room to make fluid and electrical
connection(s).
INSTALLATION
The Water to Water WT series unit should be mounted
level on a vibration absorbing pad slightly larger than the
base to minimize vibration transmission to the building
structure; It is not necessary to anchor the unit to the
floor.(Figure #2).
Figure # 2
PIPING
Supply and return piping must be as large as the unit
connections on the heat pump (larger on long runs).
Heat Pump operating under extreme conditions will
have limitation on fluid flow rates and/or
temperatures.
50°F Minimum Entering Water Temperature (EWT)
is recommended for well water applications with
sufficient water flow to prevent freezing. Antifreeze
solution is required for all closed loop applications.
Cooling Tower/Boiler and Geothermal applications
should have sufficient antifreeze solution to protect
against extreme conditions and equipment failure.
Frozen water coils are not covered under warranty.
Other equivalent methods of temperature control are
acceptable.
DANGER: For Storage if unit stacking is
required, stack unit as follows:
Do not stack units larger than 6 tons. For
units less than 6 tons, no more than three
high
NOTICE: These units are not approved for
outdoor installation; therefore, they must
be installed within a conditioned space
inside the structure. Do not locate in areas
that are subject to freezing.
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