Check The Capacity Input; Minimum Water Flow - RBI Infinite Energy2 IW199 Installation And Operation Instructions Manual

14 - START-UP
d. Insert the probe of a calibrated
combustion analyzer into the
combustion analysis probe "H" of
Figures 11-9, 11-11 or 11-13 and
take a flue gas sample;
e. Compare the CO2 reading with
the high fire range given in Figure
13-7, 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 14-1 of the gas valve closer
to the burner unit in fire. 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;
f. When CO2 level match the value of
Figure 13-7, seal screw "E" (Figure
14-1) with red paint or nail polish
to discourage tampering;
g. Set value of parameter 2201 to
LOW. The Burner 1 (Master) will
now run for 20 minutes at low fire
input;
h. Wait 2 to 3 minutes for the CO2 to
stabilize;
i. Compare the CO2 reading with
the low fire range given in Figure
13-7, 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
appliance and call the Factory
service department (see phone
number on the last cover page);
CAUTION!!!
The CO2 reading, at
low fire, could be affected by the
natural draught of the chimney
(negative pressure inside the
chimney). If this is the case, take
the CO2 reading removing the
correspondent flue gas sensor
(item 28 of Figures 3-4, 3-7 or
3-10).
l. Set parameter 2201 to "OFF", to
return the Burner 1 (MASTER) to
its normal running mode.
6.- Check the CO2 value on all other
burners follow steps as described
in sections (a through l) taking in
consideration that for the Burner 2
you have to use parameter 2202,
for Burner 3, parameter 2203 and
for Burner 4 parameter 2204;
7.- Turn off the main power to the
appliance;
8.- Close the combustion analisys probe
"H" of Figures 11-9, 11-11 or 11-13
with a suitable cap in accordance
with the vent pipe manufacturers'
instruction.
WARNING!!!
Once the
cap "L" of Figures 11-9, 11-11
or 11-13 is right in place, with
the appliance 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!
14.9 - Check the
capacity input
The appliance has a factory-set air/
gas ratio. The pressure of the gas at
the burner is indirectly controlled by
the blower. The only way to check the
appliance capacity input is operating
directly on the gas meter. To do so
proceed as follow:
1.- Turn the power switch (item "T"
in Figure 15-1) to on and perform
a call for heat by pressing button
to its highest settings
and operate downstream the unit
to verifiy the system is able to
dissipate all heat generated;
2.- On unit model 199 gain access
to the installer menu (See Section
15.11) and set parameter 2010 to
HIGH. For models 399 to 1000, set
parameter 2200 to "HIGH". Now
appliance will run at high fire for 20
minutes. Be sure the heating system
is able to dissipate all energy;
3.- Measure the capacity input to
the gas meter. This should match
with the value given in Section 17
header "Maximum heat input" with
a tolerance of +/- 10%. (For the
calculation of the btu/hr, for Natural
gas, multiply the measured flow in
ft3/hr by 1075. For LP gas multiply
the measured flow in ft3/hr by
2500);
4.- If the capacity input is too low,
92
check:
a) that there are no obstructions in
the combustion air and/or vent
systems;
b) check that the flue and air intake
length match with the rules of
Section 11.3.;
c) check that the inlet air filter (see
Figure 16-9 item B) is clean.
5.- If the capacity input is within
tolerance, bring parameter 2010 to
OFF to return the appliance to its
normal running mode. On models
399 to 1000 set parameter 2200 to
"OFF" to return the appliance to its
normal running mode;
6.- If the capacity input is higher than
the expected value, repeat the
procedure as per Section 14.8.
14.10 - Minimum
water flow
This unit is self protected against
low water flow. A water flow meter
(item "16", Figure 3-1) monitors
continuously the water flow to each
heat exchanger. If the water flow
decrease below 11 GPM (models
199 and 399) or 12 GPM (models
500, 750 and 1000), the burner
automatically shuts Off and after 3
minutes an error is displayed.