Patterson-Kelley MACH-05 manual Inspection

MACH® Series Gas-Fired Boiler

untreated make-up water will cause premature failure due to buildup of scale; such failure is not covered by warranty.

Scale can also reduce efficiency. For example, a scale thickness of 1/16" will result in a 12.5% loss of efficiency.

Water pH

The pH of the hydronic system fluid must be between

6.0and 8.5. A periodic check of the system pH should be conducted to ensure these pH levels are maintained.

IMPORTANT!

Glycol and other additives must be approved by the chemical manufacturer for use in aluminum boilers and must meet the required pH levels listed above to prevent damaging the boiler.

The water quality should be within the guidelines established by the American Boiler Manufacturers Association, as follows:

Total solids:	2,500 ppm
Total hardness:	150 ppm

The amount of oils, fats, grease, and other organic matter should be limited to 10 ppm.

Consult your water conditioning or chemical treatment supplier for analysis and recommendations.

Flushing the System

Before filling the boiler, flush the system to remove any debris from construction or maintenance. Clean and flush old piping thoroughly before installing the boiler.

IMPORTANT!

Under no circumstances should the hydronic system be flushed while the boiler is attached to the system since the debris or corrosion products could accumulate in the boiler and plug the boiler heat exchanger.

Installation

IMPORTANT!

If the piping system attached to this unit will be chemically cleaned, the boiler must be disconnected from the system and a bypass installed so that the chemical cleaning solution does not circulate through the boiler. Following chemical cleaning, the system should be thoroughly rinsed to remove cleaning agents prior to reconnecting the boiler to the system.

Filling

To be sure that the boiler is not air-bound, open the pressure-relief valve located at the rear of the boiler. Leave the relief valve open until a steady flow of water is observed. Close the valve and finish filling the system.

3.9BURNER AND IGNITION SYSTEM

3.9.1 Inspection

Inspect the unit to be sure nothing was damaged or knocked loose during shipment. Since some damage may be hidden, remove the top cover and inspect the boiler.

Inspect the gas train, blower, ignition electrode and boiler in general to be sure there was no damage during shipment or installation.

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