Ground-Water Heat Pump Applications; Open Loop - Ground Water Systems - Rheem RPVS Series Installation, Operation & Maintenance Instructions Manual

Water Coil Low Temperature Limit Setting
For all open loop systems the 30°F [-1.1°C] FP1 setting
(factory setting-water) should be used to avoid freeze damage
to the unit. See "Low Water Temperature Cutout Selection" in
this manual for details on the low limit setting.
CAUTION!
CAUTION! Many units are installed with a fi eld supplied
manual or electric shut-off valve. DAMAGE WILL
OCCUR if shut-off valve is closed during unit operation.
A high pressure switch must be installed on the heat
pump side of any fi eld provided shut-off valves and
connected to the heat pump controls in series with
the built-in refrigerant circuit high pressure switch to
disable compressor operation if water pressure exceeds
pressure switch setting. The fi eld installed high pressure
switch shall have a cut-out pressure of 300 psig and a
cut-in pressure of 250 psig. This pressure switch can
be ordered with a 1/4" internal fl are connection as part
number 39B0005N02.
CAUTION!
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with this equipment.

Ground-Water Heat Pump Applications

Figure 6: Water Well Connections
R e s i d e n t i a l S p l i t
R e v. : 1 3 M a r c h , 2 0 1 5

Open Loop - Ground Water Systems

Flow
Water
Regulator
Pressure
Control
Valve
Optional
Filter
Boiler
Drains
P/T Plugs
T ank
Water Out
Water In
Shut-Off
Valve
13