Engineered air DG series Bedienungsanleitung PDF herunterladen (Seite 12)

A SH / S-TRAC MANUAL

12 of 29 Feb 06

Recommended 24V Field Wiring Size:

Copper conductors only

Maximum Total Length of Run

< 50 Ft < 100 Ft

< 150 Ft

< 200 Ft

< 250 Ft

< 300 Ft

< 350 Ft

< 400 Ft

< 450 Ft

< 500 Ft

Circuit

Load

(Amps)

(1)

(~ 15 m)

(~ 30 m)

(~ 45 m)

(~ 60 m)

(~ 75 m)

(~ 90 m)

(~ 105 m)

(~ 120 m)

(~ 135 m)

(~ 150 m)

1 16 AWG

16 AWG

14 AWG

12 AWG

2 16 AWG

16 AWG

14 AWG

12 AWG

10 AWG

3 16 AWG

16 AWG

14 AWG

12 AWG

10 AWG

4 16 AWG

14 AWG

12 AWG

10 AWG

5 16 AWG

12 AWG

10 AWG

6 16 AWG

12 AWG

10 AWG

7 14 AWG

12 AWG

10 AWG

8 14 AWG

10 AWG

9 14 AWG

10 AWG

10 12 AWG

10 AWG

11 12 AWG

10 AWG

12 12 AWG

10 AWG

13 12 AWG

14 12 AWG

15 12 AWG

Notes:

1) The field wiring load depends on the actual load on a particular control circuit the field wiring is

connected to. Refer to the internal wiring diagram of the unit.

2) The table above is based on a maximum 10% voltage drop on a 24V control circuit. Wire size was

calculated using the following formula:

CM = (25 x I x L ) / V

Where CM is circular mils of conductor for a constant load of I amps, wire length L in feet from the unit

to the field device and back, and voltage drop V.

When connecting to a three phase power supply, check for the correct rotation of all motors and fans. If the

rotation is incorrect, reverse the rotation at the incoming power only. All electrical conduit outlets in the

control panel must be sealed to prevent moist building air from migrating to the control panel.

All penetrations through the unit walls must be caulked and sealed to prevent air and/or water from

entering the unit.

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