Series UAB
Page 2
Feb 18/2015
CAUTION: FIRE OR EXPLOSION HAZARD
Maintain clearance to combustible constructions as further specified in this manual.
Failure to do so could result in a serious fire hazard. Heaters should not be located in
hazardous atmospheres containing flammable vapors or combustible dusts. Signs should
be provided in storage areas specifying maximum safe stacking height.
CAUTION: MECHANICAL HAZARD
This equipment is designed and approved for indoor use only.
CAUTION: FIRE OR EXPLOSION HAZARD
This heater is equipped with an automatic ignition device. Do not attempt to light the
burner by hand. Failure to comply could result in a serious fire and personal injury hazard.
CAUTION: MECHANICAL HAZARD
Do not use high pressure (above ½ psi) to test the gas supply system with the burners
connected. Failure to do so could result in damage to the burner and its control
components requiring replacement.
CAUTION: SERVICE LIFE RISK
Do no install equipment in atmospheres containing halogenated hydrocarbons or other
corrosive chemicals. Failure to do so may lead to premature equipment failure and will in-
validate the warranty. Additionally, it is recommended that the equipment be installed
with a slope downward and away from the burner of 1/4” inch in 10’ feet to allow start-up
condensate drainage.