HP QuarterHorse Series 0.25 hp Portable Chiller PS-025 - Manual (Page 13)

PS QuarterHorse Series Chillers Page 13
; If you want to use straight water, contact Application Engineering’s,
Engineering Department.
; The 1 gallon (3.8 liter) reservoir is not designed to withstand water pressure
above 5 psi (34 kPa).
; The fill opening and vent line must be vented to the atmosphere for proper
operation.
Properly Venting and Filling the Reservoir Tank
To properly vent and fill the tank:
• Remove the side panel, then remove the bushing installed on the top of the
tank.
• Install a pipe nipple and tee to the ¾” coupling on top of the tank.
• Use one side of the tee for the vent line and the other side for the fill line.
• Fill the tank.
• Remove the fittings and re-install the bushing
• Extend the vent line from the tank to a proper drain.
• Re-install the side panel.
Figure 3
Ethylene Glycol Curve
Ethylene glycol required
Normal operating range is between 30°F and 70°F
for evaporator freeze protection
Chilled water
operating temperature °F
(set point)
10%
20%
30%
Ethylene
glycol
percent
by
volume
0%
0º 30º 40º 50º 60º 70º