Trane Fan-Powered Low-Height Parallel Instrukcja Instalacji Pobierz pdf (Strona 5)

5

VAV-SVX02B-EN

Reversing Relay

Calibration

By using the “bias” adjustment on the

relay, the factory-set 8.0–9.0 “cross-

over” can be changed. To recalibrate,

the relay should be connected as

illustrated in Figure 8.

Figure 8–Recalibrating Reversing Relay

If the new desired “cross-over”

pressure is 11.0 psi, this must be applied

to port #3 by adjusting the pressure

regulator. The “bias” adjustment is then

turned until 11.0 psi is obtained on the

output gage. Turning the “bias” adjust-

ment “CW” increases the output;

“CCW” decreases it.

This 11.0 psi “cross-over” would yield

the following operational chart:

Specifications

Maximum Pressure:

30 psig

Connections:

3/16" (4.& mm) nipples for ¼" (6.4 mm) OD

polyethylene tubing

Air Consumption:

0.5 SCFH (.236 L/M) @ 20 psig

Material:

ABS

Weight:

3 ½ oz

Chart

Input: 1234567891011121314151617181920

Output: 2019181716151413121110987654321

New Cross-over pressure

Bias

Adjustment

Screw

Gage

M

1

C

3

M

Pressure

Regulator

Ambient Limits:

+40°F/+120°F operating (+4°C/+49°C)

Mounting:

In-line via air connections

Factory Settings:

9 psig in./9 psig out and 8 psig in./8 psig

out

Bias Adjustment:

+/-15 psi

1 2 3 4 5 6 7 8 9 10 ... 15 16

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