Pressure relief valve: located indoors, discharges into glycol fill tank
Microbubble air eliminators are best installed where the fluid is at the highest
temperature and lowest pressure
To buffer tank
From buffer tank
Glycol fill tank
Expansion tank connection (point of no pressure change); there should be minimal
pressure drop to circulator inlet
Heat Pump (i.e. primary) circulator
Dirt separator recommended
Flexible hoses (field-supplied) aid in aligning water connections to indoor piping, and in
the prevention of vibration transmission from outdoor unit. Alternatively, use swing joints.
Exterior piping must be insulated.
P/T ports for observation of pressure and temperature differences across the unit.
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