Description of Piping Components
Supply Storage Tank: A supply storage tank must be used
in a system with less than 50 gallons or 5 gallons per ton -
whichever is greater-of liquid solution. The tank prevents
rapid cycling of the compressors and acts as a reservoir for
chilled liquid solution.
Part Number: WX202H (20 Gallon)
ERTG42S (42 Gallon)
Supply storage tank must be insulated in
the field.
Expansion Tank and Air Scoop: The expansion tank and
air scoop assembly is used to compensate for the expansion
and contraction of liquid solution in the system. The air
scoop eliminates air entrained in the liquid solution.
Part Number: 1500/1" (2.2 Gallon)
EX-3000-125 (4.4 Gallon)
Liquid Solution Bypass Valve: The liquid solution bypass
valve relieves system pressure from the liquid solution supply
line to the return line as the system air handler controls are
cycled off.
Part Number: D146M1032 (3/4")
D146M1040 (1 1/4")
Motorized Valve: The air handler motorized zone valve
controls the flow of liquid solution to the systems air handlers.
Each air handler in the system should have a motorized valve.
Part Number: MZV524E-T (1/2" 2-Way Zone Valve)
MZV525E-T (3/4" 2-Way Zone Valve)
MZV526E-T (1" 2-Way Zone Valve)
VT3212G13A020 (1/2" 3-Way Zone Valve)
VT3212G13A020 (3/4" 3-Way Zone Valve)
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