Toxalert BSP User Manual

Sequence

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™

TOXALERT

LEAD/LAG CONTROLLERS MODEL PSP & BSP



Pump/Boiler

GENERAL DESCRIPTION:

Toxalert has two basic lead/lag controller types. One designed for dual circulating pumps and the
other to automatically sequence boilers when they are to be controlled in a lead/standby sequence.

ON-OFF AUTO:

Both controller types feature an internal ON-OFF-AUTO switch mounted on the printed circuit board
that operates the controlled equipment. In the “AUTO” position the controller automatically operates
the controlled equipment via a SPST outdoor air thermostat. In the “ON” position the equipment is
positively turned ON, and positively turned off in the “OFF” position. The ON-OFF-AUTO switch
function can be remotely controlled by installing a three position switch remote from the Lead/Lag
controller (See technical description).

LEAD/LAG:

The LEAD/LAG switch is also mounted on the printed circuit board and is designed to choose the lead
equipment. With the switch in the R-1 (relay #1) position, pump #1 or boiler #1 is in the LEAD
position and equipment operated by relay 2 is automatically in the lag or standby position. With the
switch in the R-2 position the equipment (pump or boiler) operated by relay #2 is in the lead position,
and equipment connected to R-1 automatically becomes the lag or standby equipment. The
LEAD/LAG switch function may also be controlled remotely by simply installing a remote SPST
switch. (See technical description.)

r Panel

(CM) Custom Mount Models

PSP-10CM shown

TOXALERT INTERNATIONAL, Inc., PO Box 159, Mound, MN. 55364 PHONE: [phone] • FAX: [phone]

www.toxalert.com

FEATURES:

LOW VOLTAGE CONTROL CIRCUITRY

•

Flow

Switch and outside air thermostat operation

(24VAC).

LIGHT EMITTING DIODES

•

status indication, long life, maintenance free
operation.

1) POWER ON – (Green)

2) FLOW NORMAL – (Green)

3) FAILURE – (Red)

SPDT CONTACTS FOR REMOTE

•

ALARM ANNUNCIATION

ALL MODELS

•

VAC

will operate on 120, 208 or 240

(LED’s) for

STANDARD MODELS:

ON-OFF-AUTO OPERATION:

•

AUTO – requires outdoor air thermostat to activate
sequencer circuits.

OFF – positive OFF of system.

ON – positive On of system, bypasses the outdoor
air thermostat.

REMOTE CONTROL:

•

Lead/Lag switch and ON-OFF-AUTO switch
functions can easily be operated remotely (low
voltage.

FIELD PROGRAMMABLE TIME DELAY:

•

Delay of lag function operation. Pump controller
time delay from 10 seconds to 3 minutes. Boiler
controller 30 seconds to 16 minutes.

The PSP, Pump Sequence Panels are available in four models, Model PSP-10 & PSP-12 are electronic
controllers housed in a 12″ W x 14″ H x 4″ D surface mount enclosure with key locking hinged door.
Models PSP-10 CM and PSP-12 CM are electronic controllers mounted on a 10.5″ W 2 14″ H steel
mounting plate for incorporation into a custom control panel. The PSP models also come with two
different output relay contact ratings, PSP-10 and PSP-10CM models have contacts rated for 15 A. at
120/220 VAC, and the PSP-12 and PSP-12 CM contacts are rated for 30A at 120/220 VAC.

Model Numbers are:

PSP-10 and PSP-10CM*
PSP-12 and PSP-12CM*

The BSP, Boiler Sequence Panels, controllers are also available with and without surface mount
enclosures. The Model BSP-15 controller is housed in a 12″ W x 14″ H x 4″ D surface mount
enclosure with key locking hinged door and BSP-15 CM controller is mounted on a 10.5″ W x 14″ H
steel mounting plate. Both models have an output relay contact rating of 15A at 120/220VAC.

Model Numbers are:
BSP-15 and BSP-15CM* *CM=Custom mount (controller mounted on steel plate

for incorporation into custom panel.)

TIMING:

All PSP-10 and 12 controllers are shipped from the factory with a 30 seconds delay and all BSP-15
controllers are shipped from the factory with a 6 minutes delay unless other time delay period is
requested. The time delay period starts when the outdoor air thermostat calls for pump/boiler to start,
or if the On-Off-Auto switch is switched to “On”. If the pump/boiler does not proof operation within
the time delay period then the standby pump/boiler is turned on by the controller.

TOXALERT INTERNATIONAL, Inc., PO Box 159, Mound, MN. 55364 PHONE: [phone] • FAX: [phone]

www.toxalert.com