Low Range ZPM - Zone Pressure Sensor
Building Automation Products, Inc., 750 North Royal Avenue, Gays Mills, WI 54631 USA
Tel:+1-608-735-4800 • Fax+1-608-735-4804 • E-mail:[email protected] • Web:www.bapihvac.com
Specifications subject to change without notice.
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Installation & Operations
38926_ins_ZPM_LR
rev. 04/09/20
Identification and Overview
Switch Setup - Outputs, Ranges, Units/Response
Fig 2:
Setup
Switches for
Low Range
Units
1. Select OUTPUT
2. Select RANGE
If unit is ordered with a Custom Range,
then the switch must be set to R6.
3. Choose DIRECTION
Bidirectional is a plus/minus range so
choosing 0.5” range is -0.5” to +0.5”
Bidirectional and 0” to +0.5” Unidirectional
4. Choose UNITS - Inches WC or PASCALS
5. Choose RESPONSE TIME
Fast Response = 1/2 second
Slow Response = 4 seconds
Do not have power applied to unit when changing settings. After changing settings, apply power and Auto-Zero
the unit in its orientation of operation.
6. Mount, Terminate and Auto-Zero the unit
as described in later sections. Attach
the deadhead tubing to the ports during
Auto-Zeroing
BAPI’s ZPM is designed for quick
and easy field installation. The
outputs, ranges, units, directionality,
and response time are quickly set in
the field with no tools, no power and
no small components.
The optional LCD display helps with
troubleshooting because it displays
the actual differential pressure
over the entire operational range
regardless of which pressure range
is selected for output to the system
controller. Three LEDs on the
face of the unit indicate when the
pressure is “Out of Range Low”, “In
Range” or “Out of Range High”.
Fig. 1:
ZPM unit and
associated parts
Bulkhead fitting
for static tube
Static tube
and hose
with surge
damper
(for units
ordered with
the included
Static Tube.)
Cover latch
screw
Conduit
foam plug
Static tube
screws
Mounting
screws
Deadhead
tubing
