Watts Dormont SmartSense V1-TS Instructions D'installation page 4

! ! WARNING
and CANNOT provide protection if any of the following conditions exist:
• The gas appliance malfunctions or the user fails to shut off gas burners.
• An improperly sized gas utility meter does not produce enough gas flow upstream of the EFV-TSO. The EFV-
TSO should not be installed unless the meter is replaced.
• A partial break in the downstream gas line is not large enough to allow an open-ended flow of gas and acti-
vate the EFV-TSO.
• A manual gas shut-off valve downstream of the EFV-TSO is only partially open, preventing an open-ended
flow of gas to activate the EFV-TSO.
• The piping break or damage occurs upstream of the EFV-TSO (i.e. between meter and EFV-TSO), preventing
an open ended flow of gas through the EFV-TSO.
• The EFV-TSO has a rated trip flow rate that is higher than the open ended flow of the piping system.
• Foreign matter, such as pipe thread sealant, is lodged in the EFV-TSO and prevents the EFV-TSO from acti-
vating.
• The gas flow through the EFV-TSO is in the wrong direction. The EFV-TSO only responds to gas flow in one
direction (see product markings). Arrows must point in the direction of gas flow.
• The EFV-TSO has been damaged by fire, improper use or installation and is no longer in operating condi-
tion. If the EFV-TSO has been damaged and / or is no longer in operating condition, the EFV-TSO must be
replaced.
Selecting The Proper EFV-TSO
! WARNING
Failure to select the appropriate EFV-TSO for your application and appliance could result in failure of the EFV-
TSO to activate, gas leak, fire, explosion, injury, death and/or property damage.
The EFV-TSO is not designed to operate below -20F° (-29°C) or above 150F° (66°C).
1. Determine the flow requirement of your appliance by referring to your appliance manufacturer's instructions.
2. Determine the installation orientation of the EFV-TSO (vertical up, horizontal, or vertical down) in your application.
3. Find your flow requirement in the sizing table for the appropriate installation orientation.
The EFV-TSO's excess flow valve will NOT activate