Vertiv Liebert Drycooler - Aquastat Settings-2 Fan through 4 Fan Drycoolers; Aquastat Settings-6 Fan and 8 Fan Drycoolers

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Flow Control: MBV WRV

Cooling Type: Glycol GLYCOOL™ Glycol GLYCOOL™

Drycoolers inLoop 1 Multiple 1 Multiple 1 Multiple 1 Multiple

Stat Setting* Optional Factory Optional Optional Factory Factory Optional Optional

Insulate FieldPiping Yes No Yes Yes No No Yes Yes

* See Table 9.2 below through Table 9.3 below

MBV = motorized ball valve, WRV = water regulating valve

Table 9.1 Water/Glycol System Conditions RequiringOptionalSettingsforAquastats

Dial Setting (Stat Open Temp) Set for Mid Differential 8°F (4.4°C) Rise to Close

Aquastat # Fans

Factory Setting (Glycol)

(see Notes1 and2)

Optional Setting (GLYCOOL)

(see Note 3)

Minimum Allowed Settings for CRV

AQ1 F1 65°F (18.3°C) 35°F (1.7°C) 45°F (7.2°C)

AQ2 F2 & F3

75°F (23.9°C) 45°F (7.2°C) 55°F (12.8°C)

AQ3

70°F (21.1°C) 40°F (4.4°C) 50°F (10.0°C)

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 motorized-ball-valve flow controls

4. F3 fan available only on drycoolers with 3 or 4 fans.

5. AQ3 and F4 applicable only on drycoolers with 4 fans.

Source: DPN001602 Rev. 5

Table 9.2 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 # Fans Stat Location Cabinet

Factory Setting

(Glycol)

(see Notes1

and2)

Optional Setting

(GLYCOOL)

(see Note3)

AQ1 F1 Main 65°F (18.3°C) 35°F (1.7°C)

AQ2 F2 Main 70°F (21.1°C) 40°F (4.4°C)

AQ3 F3 & F4 Auxiliary 73°F (22.8°C) 43°F (6.1°C)

AQ4 F5 & F6 Auxiliary 75°F (23.9°C) 45°F (7.2°C)

AQ5

F7 & F8

Main 78°F (25.6°C) 48°F (8.9°C)

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.