Swegon CASA series User Manual

Installation, operation and maintenance instructions
for design engineers, installation engineers and service personnel
PTH_a_EN–m
Swegon CASA
®
Regulation for
constant duct pressure
Important information
Only qualified personnel
Only qualified personnel should carry
out installation, configuration and
commissioning.
Important details to consider
during installation
The installation point affects the
measurement result. The sensor must be
installed at a point where the airflow is as
even as possible.
Commissioning
The pressure sensor may not be installed
until all work that produces large quantities
of sanding dust or other impurities has been
completed.
Make sure that the ducts are clean and that
there are no loose objects in them before
commissioning.
NOTE! The manual’s original language is Finnish.
!
Included in the delivery:
• Pressure sensor
• Measuring tube
• Measurement tapping
• Instructions

Swegon CASA series Specifications

General

Product Series	CASA
Category	Control Unit
Frequency	50/60 Hz
Communication Protocol	Modbus RTU
Enclosure Class	IP20
Input Voltage	24 V AC/DC

Summary

Important Information

Only Qualified Personnel

Specifies that only qualified personnel should perform installation, configuration, and commissioning.

Installation Details

Highlights that the sensor installation point affects measurement results and requires an even airflow.

Commissioning Requirements

States the pressure sensor should only be installed after dust-producing work is complete and ducts are clean.

General Description

Planning

Installation

Sensor Installation in Duct

Details connecting the measuring tube to the pressure sensor for supply and extract air ducts.

Electric and Control Cables

Instructions for connecting the sensor's 3-wire cable to the ventilation unit's I/O connection.

Commissioning

IO Controls Configuration

Guides users to select appropriate IO points for Pa Supply and Pa Extract functions.

Settings

Airflow Adjustments

Explains setting pressure values and airflows for all operating modes for proper ventilation unit function.

Use and Function

Pressure Adjustment Alarm

Describes how malfunctions are indicated and the unit switches to normal regulation mode.

Service

Connections

Duct Pressure Sensor Connection

Illustrates wiring diagrams for connecting the pressure sensor to the air handling unit.