Johnson Controls T-5800 Series, Установка и калибровка, Страница: 5 / 12

T-5800-3/T-5800-4 Technical Bulletin 5
representative equipped with the
proper tools. An X-200-173
Calibration Kit (see Fig. 8,
ordered separately) is available
for making adjustments and
pressure checks on the T-5800.
This kit provides all of the
necessary gages, regulators,
and connectors for a more
convenient and quicker
calibration procedure.
An X-200-140 Hypodermic
Needle Test probe and
appropriate gage (see Fig. 9,
ordered separately) is also
available for troubleshooting,
test point readings, or final set
point adjustments under actual
job conditions. Note: Figure 10
illustrates an alternative
method of checking pressure
readings on the T-5800 where
use of a hypodermic needle
test probe is prohibited.
Calibrating the T-5800-3
(See Fig. 11)
With the supply air ON, balance
the receiver-controller by setting
the following:
•
Adjust the local set point dial
or the remote adjuster
(manual or automatic) to
produce 9 PSIG (63 kPa)
using the appropriate
method and gage as
described above.
•
Turn the gain dial clockwise
so that the word
“INCREASE” imprinted on
the dial is centered with the
dial reference point.
•
Install the ratio selection
jumper in the correct position
(see Fig. 11). If the
calculated ratio is less than
or equal to 2.5:1, (as is the
case with the example where
the calculated ratio is 2:1),
the jumper should be
installed in the 1:1 position.
If the calculated ratio is
greater than 2.5:1, the
jumper should be installed in
the 3:1 position.
•
Turn the ratio dial so that
“1:1 (3:1)” imprinted on the
dial lines up with the dial
reference point.
Receiver-Controller Preset
(See Example Fig. 6)
Utilize one of the pressure
checking methods described
previously to obtain a master “M”
input pressure reading, a master
balance “R” pressure reading,
and a controlled variable “CV”
input pressure reading.
1. Apply a master “M” input
pressure equal to the
midpoint of the desired
working range (Example:
30°F on a 0 to 60°F working
range or 7.2 PSIG as
highlighted in Fig. 12).