RBI Boiler, Installation And Operation Instructions Manual

Page: 108 / 154

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15.1.5 - Check control
settings
1. Set heaters setpoint to low enough
to end call for heat (see Sections
14.6 and 14.7. Gas valve should
close and burner should stop fi ring.
Fan go into a post purge, then shuts
off.
2. Control Safety Shutdown test: with
the burner fi ring, close the manual
gas shut off valve (Figure 12-1) .
Gas valve should close and burner
should stop fi ring. The heater will
try for ignition fi ve times after this,
then should lock out with a “Loc
1” error shown on the display (on
units model 399 to 1000, check that
all burners are into lockout “Loc
1”. Open the manual gas shut-off
valve, and press the “Reset” button
to return to normal operation.
15.1.6 - Check ignition
and fl ame sense
electrodes
1. Remove the fan-burner assembly
unit (see Section 15.3)
2. Remove any deposits accumulated
on the ignition/ fl ame sense
electrode using sand paper.
3. Check electrodes positioning meet
Section 15.4
15.1.7 - Check wiring and
connections
Inspect all heater wiring, making
sure wires are in good condition and
securely attached.
15.1.8 - Perform
performance verifi cation.
1. Start unit and perform a combustion
test as per Section 13.8.
2. Verify cold water pressure is correct
and that operating pressure does
not go too high (could be a problem
on the expansion tank).
15.1.9 - Flame inspection
1. Inspect fl ame through sigh glass.
2. If the fl ame is unsatisfactory at
either high fi re or low fi re, clean the
burner following Section 15.3.
from meter to appliance including
all pipes and fi ttings and heater
connection. Use liquid soap solution
for all gas testing.
WARNING!!!
Do not check
for gas leaks with an open
fl ame. Use the bubble test.
Failure to use the bubble test
or check for gas leaks with
an open fl ame can cause
explosion, severe personal
injury, death, or substantial
property damage.
15.1.3 - Verify fl ue and air
lines in good condition
and sealed tight;
1. Check for obstruction,
condensation, corrosion and
physical damage, water stains, any
signs of rust, other corrosions or
separation of the vent and air intake
piping.
2. Check outside terminations.
Screens and louvers should be free
of any debris and must be cleaned
as required.
15.1.4 - Check system
water pressure/system
piping/expansion tank;
1. Check water piping and accessories
for leaks. Slightest leaks should be
corrected.
2. Check the system to be full of water
and pressure to remain stable at
correct setting on gauge.
CAUTION!!!
Eliminate all
system or heater leaks.
Continual fresh makeup water
will reduce heater life. Minerals
can build up in sections,
reducing heat transfer,
overheating heat exchanger,
and causing heat exchanger
failure. Leaking water may
also cause severe property
damage.
WARNING!!!
Never store
combustible materials, gasoline
or any product containing
fl ammable vapors and liquids
in the vicinity of the heater.
Failure to comply with this
warning can result in extensive
property damage, severe
personal injury or death!
WARNING!!!
Never
obstruct the fl ow of combustion
and ventilation air. Failure to
provide adequate combustion
air for this heater can result
in excessive levels of carbon
monoxide which can result in
severe personal injury or death!
WARNING!!!
If
maintenance is performed on
the vent-air intake system it
must be properly reassembled
and sealed. Failure to properly
maintain the vent-air system
can result in excessive levels
of carbon monoxide which can
result in severe personal injury
or death!
WARNING!!!
Before
performing any maintenance
operations, shut the heater
off, close the manual gas
shut-off valve (Figure 12-1)
and shut electrical power
off to the heater. Follow the
Operating Instructions outlined
in the section “SAFETY
INSTRUCTIONS” (Page 3 of this
manual).
15.1.1 - Address reported
problems
Inspect any problems reported by the
owner and correct before proceeding.
15.1.2 - Check all piping
for gas leaks
1. Inspect all gas piping and verify to
be leak free.
2. Check for gas leaks: using soap
solution, check for gas leaks
15 - MAINTENANCE