MACH® Series Gas-Fired Boiler

Internal Setpoint:

The internal setpoint is set with parameter 4. The boiler temperature control modulates the boiler to maintain this internal setpoint. The upper and lower temperature differentials are used to instruct the boiler at what temperature to turn on and at what temperature to turn off.

Item

Parameter

Value

Allowable

 

 

 

Range

 

 

 

 

Setpoint

4

160

68-185

 

 

 

 

Low Temp. Differential

22

10

0-36

 

 

 

 

High Temp. Differential

23

9

0-36

 

 

 

 

Low Temp. Setpoint

5

68

59-140

 

 

 

 

The boiler will modulate to try to maintain 160° F. If the temperature increases above 169° F which is the setpoint 160° F + High Temp Differential 9°F the boiler will shut off. Once it shuts off it will not restart until the temperature drops below 150° F which is the setpoint – Low Temp Differential. The Low Temp Set Point will not permit the operator to adjust the setpoint below 68° F. (See graph below.)

 

 

Internal Setpoint

 

175

 

 

 

 

170

 

 

Boiler Turns Off

 

 

 

 

 

165

Boiler Temperature

 

 

160

 

Boiler Set Point

 

155

 

 

 

 

 

 

150

Boiler Turns On

 

 

 

 

 

 

145

 

 

 

 

0

10

20

30

40

 

 

Time

 

 

Domestic Priority:

If an indirect domestic hot water (DHW) tank is connected, the DHW function of the boiler will activate when the DHW temperature controller (supplied by others) closes (Terminal 5 to 8 TB 1, refer to Section 6.1.1), indicating a call for heat from the DHW system. The parameters should be set as follows:

 

 

Installation

 

 

 

 

 

Item

Parameter

 

Value

 

 

 

 

 

 

DHW Setpoint

1

 

140

 

 

 

 

 

 

DHW Setpoint Addition

33

 

30

 

 

 

 

 

 

DHW Status

2

 

1

 

 

 

 

 

 

DHW High Temp. Differential

25

 

6

 

 

 

 

 

 

DHW Low Temp. Differential

24

 

6

 

 

 

 

 

 

DHW Options

35

 

13

 

 

 

 

 

 

In the above example, the boiler temperature will be set to the DHW Setpoint + the DHW Setpoint Addition (140ºF + 30ºF = 170ºF) when the DHW temperature controller indicates a call for heat from the DHW system. When the DHW system calls for heat, the Central heat pump output (Terminal 10 TB2) de-energizes and the DHW pump output (Terminal 11 TB2) energizes providing 120 VAC power is provided to energize a relay coil for the DHW pump. The DHW status should be set to 1 (DHW system ON).

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Patterson-Kelley MACH-05 manual Parameter Value Allowable Range
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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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