User Guide

60
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re.Theboilermaybetemporarilylocked
intohighorlowre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amesignal(Figure12.7).
b) PresstheRH(“Next”)button5timestoadvancetothehighre(“HF”)screen.
c) Tosettheboilerinlowrefromthehighrescreen,presstheLHbutton6moretimes.
d) Toreturntoautomaticring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reCOreadingsshouldbelessthan200PPMair-free.TypicalCO
2
and O
2
readings are shown in
Table 11.5. Final readings should be taken with all doors and covers in place.
Toreturntoautomaticring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ring,carefullyunplugtheorangeamerodwireat
theame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nal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