MACH® Series Gas-Fired Boiler

Installation

 

 

3.Smoothly close the downstream manual isolation valve to reduce the gas flow and cause flame failure.

4The display will flash E-02indicating a flame failure. The E-02lockout will remain until reset on the display.

After completing this test, turn off the boiler and open the downstream manual isolation valve.

3.11.2 Test of Low Water Cut-out

The boiler is furnished with a probe-type low water cut-out in the outlet nozzle. Test as follows:

Operation of the switch can be checked by first turning the boiler off, and then turning the system pump off. Isolate the boiler from the system pressure. After isolating the system, drain the water level below the low water cut-out probe. Turn the boiler back on. It should not operate, and a manual reset lockout displaying E 12 on the display panel will occur. The LED indicator for Low Water cut-out will no longer be illuminated.

Return the system to normal operation and restart the boiler. Refer to Section 4.2.1.

3.11.3 Test of High-Limit Control

Fire the boiler and test the high limit control as follows:

With the main burner operating, turn down the temperature setting on the "high-limit" thermostat until the main burner shuts off. A manual reset lockout displaying E 12 on the display panel will occur. The high-limit switch must be manually reset prior to resetting the boiler at the display panel. Readjust the high-limit thermostat to the desired setpoint.

3.11.4 Test of Gas Pressure Switch

Low Gas Pressure Switch

The boiler is furnished with a low gas pressure switch. The operation of this switch must be checked by slowly closing the main gas cock while the burner is operating. The switch should shut down the main

burner. When the gas pressure switch opens, a manual reset lockout displaying E 12 on the display panel will occur. Upon re-opening the main gas cock, the E 12 indicator will remain on until the display panel is manually reset.

High Gas Pressure Switch

C450 units equipped with a high pressure switch must be checked by closing the downstream gas cock while the burner is operating. The switch should shut down the main burner. When the gas pressure switch opens, a manual reset lockout displaying E 12 on the display panel will occur. Upon re-opening the gas cock, the E 12 indicator will remain on until the display panel is manually reset.

C750,C900 and C1050 units equipped with a high pressure switch must be checked by closing the downstream gas cock with the boiler off. When the boiler is starte , it should enter its normal starting cycle and fail on high gas pressure when the gas safety valves open. The high gas pressure switch actuation is evident when a manual reset lockout displaying E 12 on the display panel occurs. Upon re-opening the gas cock, the E 12 indicator will remain on until the display panel is manually reset.

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Patterson-Kelley MACH-05 manual Test of Low Water Cut-out, Test of High-Limit Control, Test of Gas Pressure Switch
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MACH-05 specifications

The Patterson-Kelley MACH-05 is an innovative high-efficiency boiler designed to meet the demanding needs of today’s commercial and industrial applications. Known for its remarkable performance and advanced technologies, the MACH-05 stands out in the market with its ability to provide reliable heating solutions while minimizing energy consumption and environmental impact.

One of the key features of the MACH-05 is its cascading capability. This allows multiple units to be linked together for enhanced capacity and redundancy. By operating in a modular system, users can achieve optimal energy efficiency by adjusting the number of active units based on real-time demand. This ensures that the system operates at peak efficiency, increasing overall reliability and reducing operational costs.

The MACH-05 is equipped with a fully modulating burner system, which ensures precise control of output and efficiency across a broad range of operating conditions. This advanced burner technology facilitates a significant reduction in fuel usage compared to traditional fixed-output systems. Combined with its high thermal efficiency rating, the MACH-05 is not only environmentally friendly but also economically advantageous for facilities looking to lower energy expenses.

In terms of construction, the MACH-05 features a compact, lightweight design that allows for easy installation and integration into existing systems. Its stainless steel heat exchanger is built to provide superior durability and resistance to corrosion, ensuring a long operational lifespan and reducing maintenance requirements. This design advantage translates into lower lifecycle costs for end-users.

The boiler also incorporates intelligent control systems that enhance operational efficiency. These controls can monitor and adjust parameters in real-time, optimizing performance and offering detailed diagnostics to anticipate maintenance needs. The user-friendly interface makes it easy for operators to manage the system and access vital information regarding performance metrics.

Additionally, the MACH-05 is designed with safety in mind, featuring multiple safety controls and alarms that function to protect both the equipment and personnel. This commitment to safety ensures that facilities can operate with peace of mind, knowing that they have a reliable and secure heating solution.

In summary, the Patterson-Kelley MACH-05 combines advanced engineering, efficiency, and safety features to provide a versatile and dependable heating solution. Its key advantages, including cascading capabilities, fully modulating burner technology, and intelligent controls make it an ideal choice for commercial and industrial applications, paving the way toward sustainable and cost-effective heating systems.
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