Carel SD User Manual download pdf (Page 22)

CAREL

humiSteam

PC-301 Air Proving Switch

Mounting the PC-301 air flow switch:

Mount the airflow switch in the supply or return duct using the

screws supplied. Mount the device so that the diaphragm is in

a vertical position as shown at right.

If the airflow switch is to be mounted on the return duct

(vacuum), then mount it in a vertical position by the small

plate. Drill a 7/16" hole in the side of the duct and connect the

supplied tubing to the low pressure tap on the airflow switch

and then run it through the drilled hole in the duct. Put no more

than 2" of tubing into the duct. Caulk around the tubing where

it enters the duct. The high pressure tap is left open to

atmosphere.

If the airflow switch is to be mounted to the supply duct

(pressure), then simply drill a 7/16 hole in the side of the duct, apply caulking to the large plate, and mount the

device with the large plate to the duct and the high pressure tap/tubing mated the hole. The low pressure tap is

left open to atmosphere.

MOUNTING DIAGRAMS

TABLE 1. MAXIMUM ELECTRICAL SWITCH RATINGS

Vac Full Load

Amps

Locked Rotor

Amps

Pilot Duty

(VA)

Non-

Inductiv e

Amps

24V - - 60 10

120V 6.25 37.5 300 10

240V 3.1 18.6 300 10

277V 2.7 16.2 300 10

WIRING DIAGRAM

N.C.

Common Increase

Pressure

N.O. makes on increase N.O.

in pressure.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 47 48

No comments

Carel SD User Manual Page 22