Bell & Gossett S14334B Technologic 5500 Series Variable Primary Pump and Valve Controller - Manual (Page 29)

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5.1.9 Active Values Seq Screen
Pressing NEXT SCREEN, the controller will display
the Active Values Seq screen shown below.
Active Values
Seq: # - # - #
System Eff: n/a%
STATUS
MODE
The # symbol indicates the current pump sequence.
The lead pump is shown on the left, and the next
pumps in the staging sequence follow to the right.
This screen is only displayed if Sys DP, Flow, or Sys
KW meters are installed.
5.1.10 Bypass Valve Position Screen
Pressing NEXT SCREEN, the controller will display
the Bypass Valve Position screen shown below. This
screen will only be present when the Bypass opera-
tion mode is in Manual. See section 4.7 for more
information.
Bypass Valve
Position: 0%
(0% = Close 100% =Open)
Valve Control Man
Press F2/6, the up arrow, to increase the Bypass
Valve Position. Press F4/9, the down arrow, to de-
crease the Bypass Valve Position.
5.1.11 Sys. Temp Screen
Pressing NEXT SCREEN, the controller will display
the Sys. Temp screen shown below.
Sys. Supply Temp #F
Sys. Return Temp #F
STATUS MODE
Sys. Supply Temp and Sys. Return Temp display
values from RTDs installed in the piping. If no RTDs
are installed, this screen will be skipped.
5.1.12 Isolation Valve Status Screen
Pressing NEXT SCREEN, the controller will display
the Isolation Valve Status Screen shown below.
Isolat. Valve Status
V1: Opn V2: Cls V3: Cls
V4: n/a V5: n/a V6: n/a
STATUS MODE
The staus of the limit switch installed on the isolation
valve will be displayed if either "Monitor Valve" or
"Control Valve" is set to "Y" in section 4.6.3. This
screen will be skipped if they are both "N".
5.2 Bypass Valve Operation
The Bypass Valve position can be controlled manually
or automatically. See the following sections for in-
structions on both types of operation.
5.2.1 Manual Bypass Valve Operation
To manually control the Bypass Valve with the con -
troller, the Bypass Valve operation mode must be set
to Manual. See section 4.7.2.
Once the Bypass Valve operation mode is set to
manual, the Bypass Valve can be controlled from the
Bypass Valve Position screen shown in section
5.1.10. The Bypass Valve Position screen will only be
accessible once the Bypass Operation Mode is set to
Manual. The Bypass Valve Position screen can be
accessed by pressing NEXT SCREEN or PREV.
SCREEN the appropriate number of times from the
Technologic Pump Controller screen shown in section
3.2.
The analog signals to and from, if the feedback is
present, the bypass valve can be viewed from the
Bypass Valve Signal screen shown in section 5.1.7.
This is a status screen that can be accessed by
pressing NEXT SCREEN or PREV. SCREEN the
appropriate number of times from the Technologic
Pump Controller screen shown in section 3.2.
5.2.2 Auto Bypass Valve Operation
To automatically control the Bypass Valve with the
controller, the Bypass Valve operation mode must be
set to Auto. See section 4.7.2.
Once the Bypass Valve operation mode is set to
Auto, the Bypass Valve will be controlled automati-
cally by the controller.
The analog signals to and from, if the feedback is
present, the bypass valve can be viewed from the
Bypass Valve Signal screen shown in section 5.1.7.
This is a status screen that can be accessed by
pressing NEXT SCREEN or PREV. SCREEN the appro-
priate number of times from the Technologic Pump
Controller screen shown in section 3.2.
5.3 Manual Bypass Operation From The Controller
The following programs support constant speed
operation of pumps: A1 and D4. Refer to the follow-
ing steps to override the automatic operation of the
unit to allow manual control of the constant speed
pumps.
Press the START/STOP key to stop the system. The
solid green LED will flash, and any running pumps will
stop. Press the AUTO/MANUAL key and the screen
will display Operation Mode screen shown below.
Enter Operation Mode
#
1 = AUTO, 2 = MANUAL
3 = MANUAL BYPASS