Drycooler Aquastat Settings - Liebert PX018 Installer's/User's Manual

9.14 Drycooler Aquastat Settings

Applications with the Optional Stat Setting require field piping to be insulated to prevent condensation.
Table 9.7 below, shows acceptable applications where stats must be adjusted to Optional Setting.
Aquastats must be field-adjusted to Optional Setting for:
• GLYCOOL/Dual Cool applications
• Single Drycooler loops with motor ball valve flow controls.
Table 9.7 Water/glycol system conditions requiring optional settings for aquastats
Drycoolers in Loop
Stat Setting*
Insulate Field Piping
* See Table 9.8 below
MBV = motorized ball valve
Table 9.8 Aquastat settings—2-fan through 4-fan drycoolers
Dial Setting (Stat Open Temp) Set for Mid Differential 8°F (4.4°C) Rise to Close
Aquastat #
AQ1
AQ2
AQ3
1. All drycoolers are shipped at Factory Setting.
2. Factory Setting is used for all glycol applications, except single drycooler loops with motor ball valve controls.
3. Stats must be field-adjusted to Optional Setting for GLYCOOL/Dual Cool applications and all single drycooler loops using motor ball
valve flow controls.
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Flow Control:
Cooling Type: Glycol
1
Optional
Yes
Fans
F1
F2 & F3
F4
MBV
GLYCOOL™
Multiple 1
Factory Optional
No Yes
Factory Setting (Glycol)
(see Notes 1 and 2)
65°F (18.3°C)
75°F (23.9°C)
70°F (21.1°C)
Multiple
Optional
Yes
Optional Setting (GLYCOOL)
(see Note 3)
35°F (1.7°C)
45°F (7.2°C)
40°F (4.4°C)
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