Installation 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.
Figure 8: Water Well Connections
Ground-Water Heat Pump Applications
Pressure
Ta n k
Shut-Off
Valve
Boiler
Drains
Flow
Regulator
Water In
Water Out
Water
Control
Va l v e
Optional
Filter
P/T Plugs
ѥCAUTION! ѥ
ѥCAUTION! ѥ
Residential Split Units - 60Hz Puron
®
Rev.: 6 Dec., 2011
16
CAUTION! Many units are installed with a factory or ¿ 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 ¿ 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 ¿ 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 À are connection as part number 39B0005N02.
CAUTION! Refrigerant pressure activated water regulating
valves should never be used with the equipment.