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WSV6 VERTICAL SERIES - IOM
20 WSV6 Vertical Series – IOM
INSTALLATION CONTINUED
PIPING NOTES

Prior to making piping connections, contractor must clean
and flush water loop system. Failure to clean/flush system
may result in excessive noise, tripping, and premature
component failure.
1. Flush all field piping prior to connection to clear all
debris.
2. Open all valves (mid-way for hand valves, manually
open motorized valves) prior to soldering and
brazing. Use proper heat shields to protect valve
bodies.
3. When soldering or brazing to the unit, it is
recommended to have a fire extinguisher readily
available.
4. Use proper soldering and brazing techniques to
protect valve bodies and unit components.
5. Avoid rapid quenching of soldered joints to prevent
weakening.
6. Make provisions for expansion and contraction of
piping systems to provide movement with
temperature changes. Failure to make proper
provisions will result in damage and failure of
piping, fittings, and valves throughout the system.
7.
DO NOT insulate the heads or motorized portion of
control valves. Excessive heat build-up can cause
damage and affect proper operation of the system.
8. Consider electrical routing when installing field
piping.
9. Observe all regulations and codes governing
installation of piping.
10. When all connections are complete, pressure test
the system, and repair any leaks or faulty joints.
Hydronic systems are not designed to hold
pressurized air and should only be tested with
water. Failure to observe this note could damage
the system.
PIPING INSTALLATION
All piping must be adequately sized to meet the designed
water flow as specified for the specific application, and
must adhere to all applicable codes. Piping connections on
the equipment are not necessarily indicative of the proper
supply and return line sizes.
On units with plastic drain pans the drain connection must
be made hand tight only.
Chilled water piping must be properly insulated to prevent
condensation and potential property damage. It is also
recommended that all piping be insulated to prevent
freezing in unconditioned spaces.

Do not bend or kink supply lines or hoses. For all supply
lines or hoses of 1-1/2” OD or greater, use proper sized
fitting is recommended to prevent piping damage and
potential restrictions in water flow.

For all applications, 50°F minimum entering water
temperature and rated water flow is required to prevent
freezing. Antifreeze solution is required for any application
with entering water below 50°F. Frozen water coils are not
covered under warranty.

All manual flow valves used in the system must be ball
valves. Globe and gate valves must not be used due to high
pressure drop and poor throttling characteristics. Never
exceed the recommended water flow rates. Serious erosion
or damage of the water to refrigerant heat exchanger could
occur.

When anti-freeze is used in the loop, insure that it is
compatible with the Teflon tape that is applied.
The WSV6 water source heat pump are designed to
operate with the entering liquid temperature between 50°F
and 110°F. With the extended range option, the heat pump
model can operate with entering liquid temperatures
between 50-110°F. Below 50°F. antifreeze solution must be
used to prevent freezing. Frozen water coils are not
covered under warranty.