81
15.8 - Checking and
adjusting CO2 levels
Figure 14-7 lists the correct CO2 ranges
for a heater running at normal operating
conditions at an altitude below 2,000
ft
(610 m)
. CO2 values outside of the
ranges given in Figure 14-7 may lead to
malfunctioning of the heater and cause
it to prematurely fail. To check the CO2
value, carry out a combustion analysis
follow Section 15.8.1 or 15.8.2.
15.8.1 - Checking CO2
level on units model 199
and 250
WARNING!!!
During this
procedure compare also CO
(carbon monoxide) reading, with
the value given in Figure 14-7. If
this is higher, STOP the heater
and call the Factory service
department (see phone number
on the last cover page). Failure
to comply with this requirement
could result in severe personal
injury, death or substantial
property damage.
1. If it is not already present, create a
combustion analysis probe site at 8”
after the flue gas exhaust connection
(see Figures 12-9, 12-11 or 12-13,
item “H”). To do so, follow the vent
pipe manufacturers’ instruction.
2. generate a call for heat and wait until
the heater is firing;
3. gain access to the “Installers’ menu”
and set parameter
2010
to
HIgH
(see Section 16.11). The heater will
now run for 20 minutes at high fire
input;
4. wait 2 to 3 minutes for the CO2 to
stabilize;
5. insert the probe of a calibrated
combustion analyzer into the
combustion analysis probe “H” of
Figures 12-9, 12-11 or 12-13 and
take a flue gas sample;
15 - START-UP
6. compare the CO2 reading with the
high fire range given in Figure 14-7,
making sure to use the range for the
gas type in use. If the CO2 reading
is outside the specified range, it
must be adjusted operating on the
“E” screw of Figure 15-1. Use a
2.5mm Allen Wrench to turn the
screw (clockwise to reduce the CO2
level, counter-clockwise to increase
the CO2 level) in small increments
and wait for the CO2 to stabilize to
prevent overshooting the desired
value;
7. when CO2 level match the value of
Figure 14-7, seal screw “E” with red
paint or nail polish to discourage
tampering.
8. set value of parameter
2010
to
LOu
. The heater will now run for 20
minutes at low fire input;
9. wait 2 to 3 minutes for the CO2 to
stabilize;
10. compare the CO2 reading with the
low fire range given in Figure 14-7,
making sure to use the range for the
gas type in use. The CO2 reading
must be inside the specified range;
If not, STOP the heater and call the
Factory service department (see
phone number on the last cover
page).
11. set parameter
2010
to
OFF
to return the heater to its normal
operating mode.
12. close the combustion analysis probe
“H” of Figures 12-9, 12-11 or 12-13
with a suitable cap in accordance
with the vent pipe manufacturers’
instruction.
WARNING!!!
Once the
cap “L” of Figures 12-9, 12-11
or 12-13 is right in place, with
the heater at high fire, check
that it is absent from leakage
and is mechanically fixed.
Improper cap fixing can result
in excessive levels of carbon
monoxide which can cause
severe personal injury or
death!
15.8.2 - Checking CO2
level on units model 399
and 500
WARNING!!!
During this
procedure compare also CO
(carbon monoxide) reading, with
the value given in Figure 14-7. If
this is higher, STOP the heater
and call the Factory service
department (see phone number
on the last cover page). Failure
to comply with this requirement
could result in severe personal
injury, death or substantial
property damage.
1. If it is not already present, create a
combustion analysis probe site at 8”
after the flue gas exhaust connection
(see Figures 12-9, 12-11 or 12-13
item “H”). To do so, follow the vent
pipe manufacturers’ instruction.
2. Set parameter
2200
to “
HIgH
”
(see section 16.11). Now all burners
will run at high fire for 20 minutes;
3. wait 2 to 3 minutes the CO2 to
stabilize.
4. Insert the probe of a calibrated
combustion analyzer into the
combustion probe “H” of figures 12-9
or 12-11 or 12-13, and take a flue gas
sample.
5. compare the CO2 reading with the
high fire range given in Figure 14-7,
making sure to use the range for the
gas type in use. If the CO2 reading
is outside the specified range, it
must be adjusted operating on
each burner. Set parameter
2200
to
OFF
and follow the sequent
procedure:
a. keep the heater in stand-by by
removing any call for heat (remove
the jumper or any wires from
terminals 10 and 11 inside the
junction box or set the heating
service to off by pushing on the
button up to see the
OFF
word);
b. gain access to the Installer menu
and set parameter
2201
to
HIgH
(see Section 16.11). Now
the “Burner 1 (Master) will run for
20 minutes at high fire input;
Summary of Contents for Esteem 399
Page 3: ...3 SAFETY INSTRUCTIONS ...
Page 5: ...5 SAFETY INSTRUCTIONS ...
Page 112: ...112 17 MAINTENANCE ...
Page 116: ...116 19 SPARE PARTS Spare parts ...
Page 135: ......
