APC AFX Series Specifications download pdf (Page 35)

Guide Specifications

APC NetworkAIR™ AFX 31

2.02 OPTIONAL COMPONENTS

A. CONDENSER

1. Water and glycol cooled systems shall employ a brazed plate condenser that uses the latest

heat transfer technology. Type 316L stainless plates shall be brazed together in a vacuum

furnace and shall comply with ASME pressure vessel code. Pressure rating shall be 450

psi (3100 kPa).

B. WATER-REGULATING VALVES

1. Water and glycol cooled systems shall utilize two-way or three-way valves to regulate the

amount of water or glycol supplied to the condenser in response to refrigerant discharge

pressure. The standard valve pressure rating shall be 150 psi (1030 kPa).

C. DISCHARGE DUCT COLLAR

1. A 1” (25 mm) duct flange shall be provided for field installation on a unit to provide

convenient connection to external ductwork.

D. SECONDARY DRAIN PAN

1. Systems shall be provided with two drain pans. The primary stainless steel condensate pan

shall lie directly under the cooling coil. The secondary, emergency drain pan shall provide

additional protection by catching any water before it reaches the subfloor.

E. SPOT WATER DETECTOR

1. A water detector shall be factory-wired and shipped in the bottom of the unit to sense

water and send a signal to the master control giving the operator possible alarm indications

options for shutdown. The water detector shall be provided with 15 ft (5 m) of wire.

F. CABLE WATER DETECTOR

1. A leak detection sensing cable shall be shipped loose with the unit. If water or other

conductive liquids contact the cable anywhere along its length, the main controller

visually and audibly annunciates the leak.

2. The detector shall be provided with 20ft (6 m) of cable. Cable may be cascaded up to

1000ft (300 m).

G. F I R ES TAT

1. A firestat shall be factory-installed in the return air to sense heat and send a signal to the

main controller shutting down the unit and activating a visual and audible alarm.

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APC AFX Series Specifications Page 35