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3903002 06.16
Content
1. PRODUCT INFORMATION
1.1 Function ............................................................3
1.2 Components .....................................................3
1.3 Warranty ...........................................................3
2. SPECIFICATIONS AND DIMENSIONS
2.1 Dimensions and Capacities ...............................4
3. MECHANICAL INSTALLATION
3.1 Installation of Over-Pressure Switch (OPS) ........5
3.2 Installation of Stack Probe for OPS ...................5
4. ELECTRICAL INSTALLATION
4.1 Wiring the OPS .................................................6
5. STARTUP AND CONFIGURATION
5.1 Adjusting the Pressure Setting ..........................6
1. PRODUCT INFORMATION
1.1 FUNCTION
The OPS, Over-Pressure Switch, is an adjustable differential
pressure switch. It is used in conjunction with the ENERVEX
MODSTM, Modulating Over-Draft Damper System for over-
pressure protection. If excessive pressure builds up between
the boiler outlet and the system damper, the switch will shut
down the heating appliance, while the EBC 31 control unit
drives the damper completely open to relieve the pressure.
The differential pressure acts via diaphragm against the force
of setting spring on the microswitch. The pressure switch
operates without any auxiliary power.
The OPS monitors differential pressure in firing and venitlation
systems. The switch is suitable for air, flue and exhaust
gases and can be mounted in the horizontal or vertical
position.
The switch housing and the internal switch are made of
polycarbonate. The diaphragm is made of NBR (silicone),
while the switching contact is made in fine silver.
• CE Approved
1.2 COMPONENTS
The PDS shipment contains:
• 1 OPS Over- Pressure Switch
• Duct Kit consisting of stack probe with mounting
flange and 6 ft. silicone tubing. If other components
are shipped, they will appear as separate items on the
shipping packing list.
1.3 WARRANTY
2-Year Factory Warranty. Complete warranty conditions are
available from ENERVEX, Inc.
