Velocity Shadow Series, Installation And Operating Instructions Manual

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16) Perform a combustion test. Boilers are equipped with a screw cap in the vent adapter. Be sure to replace this cap when
combustion testing is complete. Check CO
2
(or O
2
) and CO at both high and low fire. The boiler may be temporarily locked
into high or low fire as follows:
a) From the home screen, press and hold both the LH and RH buttons for 3s. The screen will change to into Diagnostic
mode and show the flame signal (Figure 12.7).
b) Press the RH (“Next”) button 5 times to advance to the high fire (“HF”) screen.
c) To set the boiler in low fire from the high fire screen, press the LH button 6 more times.
d) To return to automatic firing control from either the HF or LF screens, press the LH (“Done”) button. The boiler will
return to automatic modulation from either screen after 15 minutes if no buttons are pressed.
e) At both high and low fire CO readings should be less than 200PPM air-free. Typical CO2 and O2 readings are shown in
Table 11.5. Final readings should be taken with all doors and covers in place.
To return to automatic firing control from either the HF or LF screens, press the LH (“Done”) button. The boiler will return
to automatic modulation from either screen after 15 minutes if no buttons are pressed.
17) Perform a check of the ignition safety shut-off device. With the burner firing, carefully unplug the orange flame rod wire at
the flame rod using a pair of insulated pliers (Figure 13.1). The burner should shut off immediately.
18) Test any external limits or other controls in accordance with the manufacturer’s instructions.
19) Refer to the Operation Section to set-up the control for the system in which the boiler is installed, such as adjusting
temperature set points.
20) Adjust the heating and indirect water heater thermostats to their final set points.
NOTICE
This boiler has a limited warranty, a copy of which is included with this boiler. It is the responsibility of
the installing contractor to see that all controls are correctly installed and are operating properly when
the installation is complete.
Model Fuel %CO
2
%O
2
Max CO
Air Free
(ppm)
80MBH Natural Gas 9.0 5.1 200
80MBH Propane 10.2 5.4 200
100MBH Natural Gas 9.0 5.1 200
100MBH Propane 10.2 5.4 200
120MBH Natural Gas 9.0 5.1 200
120MBH Propane 10.2 5.4 200
150MBH Natural Gas 9.0 5.1 200
150MBH Propane 10.2 5.4 200
180MBH Natural Gas 9.0 5.1 200
180MBH Propane 10.2 5.4 200
TABLE 11.5: TYPICAL COMBUSTION READINGS