Series WTH
Page 2
LT105 Feb. 2019
CAUTION: FIRE OR EXPLOSION HAZARD
Maintain clearance to combustible materials 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 expands and contracts with each operating cycle. The gas connection, suspension
hardware, and the installation itself must safely allow this movement. Failure to do so could result in
serious fire or explosion hazard.
CAUTION: FIRE OR EXPLOSIONS 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, 60 mbar) 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 not install equipment in atmosphere containing halogenated hydrocarbons or other corrosive
chemicals. Failure to do so may lead to premature equipment failure and invalidation of the warranty.
Additionally, it is recommended that the equipment be installed with a downward slope, away from the
burner. The rate of declination should be ¼
” (6mm) in height per 10’ (3m) in length to allow the start-up
condensation to drain.