LAARS LCH75T - Installation Manual - Manual (Page 21)

20
General Operation continued-
Hotter water increases the risk of scald injury. Scalding may occur within five (5)
seconds at a temperature setting of 140
°F (60 °
C). To protect against hot water
injury, install an ASSE approved mixing valve in the water system. This valve will
reduce point of discharge temperature by mixing cold and hot water in branch
water lines. A licensed plumbing professional or local plumbing authority should
be consulted.
Note: This water heater is equipped with an energy cut out device to prevent
overheating. Should overheating occur or the gas supply fail to shut off, turn
off the manual gas control valve to the appliance and call a qualified service
technician.
Note: Whenever the water heater is filled with cold water, condensate will
form on the cool tank surface and drops of water will fall on the hot burner
and combustion chamber surfaces producing a “sizzling” noise.
Condensation is normal and does not indicate a leak. It will disappear when
the tank becomes heated.
BURNER FLAME CHECKS
Cast Iron Burner: At the time of installation and at periodic intervals (not
more than 6 months), a visual check of the main burner and pilot flames
should be made to determine if they are burning properly. For ideal operation,
the gas and air must be properly proportioned. The proper air-gas mixture is
obtained by adjusting the air shutter on the mixer face of the main burner (See
Figure 4). To adjust for proper burning, loosen the air shutter nut, rotate
shutter to close the opening in the burner then slowly rotate the shutter until
the yellow tips disappear and the flame becomes blue. Tighten the air shutter
nut. Too much air will cause the flame to lift off the burner ports and create
noisy operation. Too little air will result in soot formation. The main burner
flame should light smoothly from the pilot.
Steel Burner: These models are equipped
with self adjusting air mixture and do not
have an adjustable air shutter (See
Figure 4). At periodic intervals, a visual
check of the main burner and pilot
flames should be made to determine
if they are burning properly. The main
burner flame should light smoothly
from the pilot.
Figure 4
DANGER