Instruction Manual
D103409X012
Installation
May 2013
30
Vent
WARNING
Personal injury or property damage can occur from cover failure due to overpressure. Ensure that the housing vent
opening is open and free of debris to prevent pressure buildup under the cover.
WARNING
This unit vents the supply medium into the surrounding atmosphere. When installing this unit in a non‐hazardous
(non‐classified) location in a confined area, with natural gas as the supply medium, you must remotely vent this unit to a
safe location. Failure to do so could result in personal injury or property damage from fire or explosion, and area
re‐classification.
When installing this unit in a hazardous (classified) location remote venting of the unit may be required, depending upon
the area classification, and as specified by the requirements of local, regional, and federal codes, rules and regulations.
Failure to do so when necessary could result in personal injury or property damage from fire or explosion, and area
re‐classification.
Vent line piping should comply with local and regional codes, should be as short as possible with a minimum inside
diameter of 12.7 mm (1/2‐inch), and few bends to reduce case pressure buildup.
In addition to remote venting of the unit, ensure that all caps and covers are correctly installed. Failure to do so could result
in personal injury or property damage from fire or explosion, and area re‐classification.
The relay constantly bleeds a small amount of supply medium into the area under the cover. The vent opening, located
below the wiring terminal box on the side of the housing, should be left open to prevent pressure buildup under the
cover. If a remote vent is required, the vent lines must be as short as possible with a minimum number of bends and
elbows.
To connect a remote vent, remove the plastic vent. The vent connection is 3/8 NPT. At a minimum, 12.7 mm
(1/2‐inch) tubing should be used when installing a remote vent to prevent excessive pressure from building up under
the cover.
Wiring and Electrical Connections
WARNING
To avoid personal injury resulting from electrical shock, do not exceed maximum input voltage specified in table 1‐2 of this
quick start guide, or on the product nameplate. If the input voltage specified differs, do not exceed the lowest specified
maximum input voltage.
WARNING
Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection and
temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage
from fire or explosion.
Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area approval.
Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or
explosion.
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