Field Controls WMO-1 Manual

BLOCKED VENT SWITCH
The WMO-1 Blocked Vent Switch is recommended for installation with an oil fired appliance that normally
operates with its vent system under negative pressure. This device is intended to detect a blocked vent
system, responds to hot flue gases backing up through its heat transfer tube, and can be wired to shut off the
oil burner. It requires manual resetting.
WARNING: Read the installation instructions carefully and completely before proceeding with
the installation.
WARNING: Do NOT reset the device or restart the appliance unless the cause has been identified
and corrected by a qualified agency. Insure the switch appliance combination has been cleaned by
a qualified agency before placing back into service. Annual inspection and cleaning by a qualified
agency is required.
•
Wiring MUST be in accordance with the current Canadian Electrical Code and any other applicable
federal, provincial and local code requirements.
•
For installations in the USA, all wiring shall be in accordance with the National Electrical Code and
applicable local codes.
•
For continued safe operation, the appliance-switch combination is required to be inspected and
maintained annually by a qualified agency. Failure to properly maintain the appliance-switch
combination can lead to death, personal injury and/or property damage.
READ THESE INSTRUCTIONS CAREFULLY AND COMPLETELY BEFORE PROCEEDING WITH THE INSTALLATION.
This device MUST be installed by a qualified agency in accordance with the manufacturer's installation instructions. The definition of
a qualified agency is: any individual, firm, corporation or company which either in person or through a representative is engaged
in, and is responsible for, the installation and operation of HVAC appliances, who is experienced in such work, familiar with all the
precautions required, and has complied with all the requirements of the authority having jurisdiction.
Installed By:
Model: WMO-1
Please retain these instructions after installation.
Phone:
www.fieldcontrols.com
ITEMS SUPPLIED IN THIS KIT:
1-Blocked vent switch assembly
1-Gasket
1-Instruction sheet
Installation Date: