MACH
®
Gas Fired Boiler
38
Check daily to be sure that the boiler area is free and clear of any combustible
materials, including flammable vapors and liquids.
5.1.2 Weekly
Observe the appearance of the main flame. If the flame appearance changes from what was observed after proper
combustion adjustment, corrective action should be taken. A qualified service person should check and adjust
combustion as needed.
Correct air adjustment is essential to the efficient operation of this boiler. Ensure that the flow of combustion and
ventilation air is not obstructed. If an adjustment in the combustion appears necessary, the flue gas composition
should be checked with a carbon dioxide (CO
2
) or oxygen (O
2
) analyzer and compared to the values stated in section
3.10.4. Refer to Table of Combustion Exhaust Settings. If an adjustment in the combustion is necessary, call a
qualified and knowledgeable installer or service agency that has been trained on the MACH
®
boilers.
5.1.3 Monthly
1. Using the control panel, enter the information mode and scroll down to view the flame signal. When the boiler is
firing, the signal will be “yes” and when the boiler is not firing, the signal will be “no”.
2. Test high-limit Control. (refer to Section 3.9)
3. Test operating temperature controls by reducing or increasing temperature setting as necessary to check burner
operation.
4. Test the low water cut-off. Refer to Section 3.9.
5. Test low gas pressure switch. Refer to Section 3.9.
6. Check the condensate drain system. Clean and flush as necessary.
Installation and service must be performed by a qualified installer or service agency that has been trained on the
MACH
®
boiler.
5.1.4 Semi-Annually
In addition to the recommended monthly service:
1. Clean burner of any accumulated dust or lint. See Section 5.2 on "Cleaning the Burner."
2. Inspect burner for any signs of deterioration or corrosion. Replace immediately if deterioration or corrosion is
evident.
3. Check the pH level of the system fluid (refer to section 3.7.4)
4. Inspect and clean the condensate system and check for leaks. If a condensate neutralization kit is present, open
the lid and inspect the limestone rocks. If they are absent or have been significantly worn away, replace them
with new limestone rocks. Use hi-calcium (or pure) limestone.
Installation and service must be performed by a qualified installer or service agency that has been trained on the
MACH
®
boiler.
The blower motor is permanently lubricated and does not require periodic lubrication.
5.1.5 Annually
In addition to the recommended monthly and semi-annual service:
1. Inspect and clean the inlet screen of any accumulated dust or lint.
