Bell & Gossett S14334B Technologic 5500 Series Variable Primary Pump and Valve Controller - Manual (Page 17)

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Press NO/0 and ENTER to edit the fields. To return
to the Stage/Destage Menu, shown in section 4.3.1,
press YES/7 and ENTER. See Table 8 below for a
description of the PV Stage variables.
4.3.1.2 PV Destage
From the Stage/Destage Menu, shown in section
4.3.1, press SET POINT/2 and ENTER to get to the
PV Destage screen shown below.
Destage: ##%
Destg Pr Timer: ##s
HD Spd: ##%
HD Pr Tm: ##s Ok ? (Y/N)
To edit the fields, press NO/0 and ENTER. To return
to the Stage/Destage Menu, shown in section 4.3.1,
press YES/7 and ENTER. See Table 9 below for a
description of the PV Destage variables.
4.3.1.3 EOC Stage
From the Stage/Destage Menu, shown in section
4.3.1, press SETUP/3 and ENTER to get to the EOC
Stage screen shown below.
Pump Max Flow: #
Stage Proof Tm: ##s
Flow Offset: #
Ok ? (Y/N)
To edit the fields, press NO/0 and ENTER. To return
to the Stage/Destage Menu, shown in section 4.3.1,
press YES/7 and ENTER. See Table 10 below for a
description of the EOC Stage variables.
Variable Unit Description Default Value Range Field Value
Destage % Percentage of the stabilized speed at which the lag pump 85 0-100
will stop
Destg s Proof timer prior to stopping lag pump 30 0-999
Pr Timer
HD Spd
% Lowest speed at which parallel pumps will operate prior 50 0-100
to destaging the lag pump
HD Pr Tm s Proof timer prior to destaging the lag pump when 30 0-999
operating below the HD speed
Table 9: PV Destage Variables
Variable Unit Description Default Value Range Field Value
Pump GPM Maximum flow allowable prior to starting a lag pump 0 0-9999
Max Flow
Stg Proof
s Proof timer prior to end of curve staging 30 0-999
Tm
Flow
GPM Flow rate of constant speed pump supplying variable 0 0-999
offset speed pump; input only required on series pumping
applications. The flow rate of the constant speed pump is
deducted from the total system flow rate in order to pro-
vide end of curve protection for the variable speed pump
Table 10: PV EOC Stage Variables
Variable Unit Description Default Value Range Field Value
Stg Spd % Maximum speed at which the lead pump will operate 95 0-100
prior to starting a lag pump
Stg Proof s Proof timer prior to starting lag pump 30 0-999
Timer
Stab
s Staging stabilization time, delay prior to calculating 60 0-999
Timer destage value
Table 8: PV Stage Variables