MACH® Series Gas-Fired Boiler

Maintenance

 

 

5.5.2 Auto-reset Service Codes

Code

Lockout

 

 

b 08

Air pressure switch open.

 

 

b 18

Outlet high limit temp.

 

 

b 19

Return high limit temp.

 

 

b 24

Switched inlet / outlet.

 

 

b 25

Outlet temp rapid change.

 

 

b 26

High exhaust back pressure.

 

 

b 30

Max delta T.

 

 

b 40

Flue sensor open.

 

 

b 52

High flue temp.

 

 

b 61

Air pressure switch closed.

 

 

b 65

Fan speed incorrect.

 

 

Description

The air pressure switch failed to close to indicate sufficient air flow to start the boiler. The outlet water temperature has exceeded the internal high limit temperature setting. The return water temperature has exceeded the internal high limit temperature setting.

The inlet water temperature has been more than 18° F above the outlet for more than 75 seconds.

The outlet water temperature is increasing too fast. Indicating low flow condition.

The high exhaust back pressure switch is tripped indicating a blocked stack, inlet, or condensate system.

The temperature rise across the heat exchanger is greater than maximum allowed, indicating insufficient flow.

The flue gas temperature sensor is indicating an open circuit.

The flue temperature has exceeded the maximum allowable setting. The air pressure switch failed to open prior to starting the blower. The fan is being directed to a higher speed than it is achieving.

WARNING

If any “Manual Reset” limit device trips,

DO NOT

reset without determining and correcting the cause.

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Patterson-Kelley MACH-05 manual Do not, Auto-reset Service Codes

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.