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WSV6 VERTICAL SERIES - IOM
WSV6 Vertical Series – IOM 25
APPLICATION
COOLING TOWER/BOILER APPLICATION
To ensure optimum cooling and heating performance, the
cooling tower and boiler loop temperature should be
maintained between 55-75°F in the heating mode and 60-
95°F in the cooling mode. In the cooling mode, heat is
rejected from the heat pump’s refrigerant into the water
loop. A cooling tower and/or boiler may be required to
maintain proper water temperature within the water loop.
In an open cooling tower, chemical water treatment is
mandatory to ensure water is free of corrosive materials
In heating mode, heat is absorbed from the water loop into
the heat pump’s refrigerant. A boiler may be utilized to
maintain the proper water temperature within the loop.

A boiler may be required in the water loop to maintain the
loop water temperature between 55-75°F. Failure to
maintain proper water loop temperatures could result in
equipment failure and property damage, and void
warranties.
A secondary heat exchanger (plate frame between the unit
and the open cooling tower) may also be used. It is
imperative that all air is eliminated from the closed loop
side of the heat exchanger to prevent condenser fouling.

Use copper conductors only. Install all parts and panels
before operation of unit. Failure to follow these warnings
can result in injury or death.

The manufacturer does NOT WARRANT equipment subjected
to abuse. Dirt, piping chips or other foreign material can
cause damage or failure to the water or to refrigerant heat
exchanger.
No unit should be connected to the supply or return
piping until the water system has been completely
cleaned and flushed to remove dirt, piping chips or other
foreign material. Supply and return hoses should be
connected together during this process to ensure the
entire system is properly flushed. After the cleaning and
flushing has taken place the unit may be connected to
the water loop and should have all valves adjusted to
supply the proper flow rate for the unit. Nominal flow
rate is 3 GPM per 12,000 BTUH of cooling.
EXTENDED RANGE OPERATION
Piping systems expected to utilize water temperature
below 50°F require the extended range option, which
includes closed cell installation on all piping surfaces to
eliminate condensation. This application requires sufficient
antifreeze solution to prevent the water loop against
extreme temperature conditions and condenser coil
freezing. Frozen condenser coil are not covered under
warranty. A boiler may be required to maintain the
minimum water temperature within the loop.

Connect ground wire to ground terminal marked “GND”.
Failure to do so can result in injury or death.

Any device that has been furnished by the factory for field
installation must be wired in strict accordance with the
associated wiring diagram. Failure to do so could damage
components and void warranties.
CLOSED LOOPS
Failure to maintain proper water loop temperatures could
result in equipment failure and property damage, and void
warranties. Consult the factory when running entering
water temperatures below 50°F as additional pipe
insulation may be required to avoid excessive sweating
inside the unit. For applications below 50°F it is imperative
that the system be operated with antifreeze solution.
When a secondary heat exchanger is used (i.e. plate to
plate; closed loop system) it is imperative that all air is
purged from the system to prevent condenser fouling.

The entire water loop must be completely cleaned and
flushed of all debris prior to final connections and unit
operation.
Valves should be adjusted to supply proper water flow
rated for the unit.
Failure to do so will VOID ALL FACTORY WARRANTY.