Honeywell W7752D specifications Switching Levels, Zone Options, Miscellaneous

Models: W7752D

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EXCEL 10 FCU CONTROLLER LNS PLUG-INS USER GUIDE

Switching Levels

See section "Configurations" on page 12 for more information about parameters.

Table 20. FCU Controller switching levels configuration options

function

configuration options

default

cooling stage 1 switching level

0 to 100%

5%

heating stage 1 switching level

0 to 100%

5%

 

 

 

cooling stage 2 switching level

0 to 100%

50%

heating stage 2 switching level

0 to 100%

50%

cooling stage 3 switching level

0 to 100%

75%

 

 

 

heating stage 3 switching level

0 to 100%

75%

cooling hysteresis

0 to 100%,

10%

heating hysteresis

0 to 100%

10%

 

 

 

Notes:

1.Stage switching levels and hysteresis are used for fan control as well as multi-stage heating/cooling outputs control.

Zone Options

The Zone configuration options are listed in the following table. See section "Configurations" on page 12 for more information about parameters.

Table 21. FCU Controller zone configuration options

function

configuration options

default

cooling occupied setpoint

50 to 95°F (10 to 35°C)

73.4°F (23°C)

 

 

 

heating occupied setpoint

50 to 95°F (10 to 35°C)

69.8°F (21°C)

cooling standby setpoint

50 to 95°F (10 to 35°C)

77°F (25°C)

 

 

 

heating standby setpoint

50 to 95°F (10 to 35°C)

66.2°F (19°C)

 

 

 

cooling unoccupied setpoint

50 to 95°F (10 to 35°C)

82.4°F (28°C)

heating unoccupied setpoint

50 to 95°F (10 to 35°C)

60.8°F (16°C)

Notes:

1.Ensure that unoccupied heating<occupied heating<occupied cooling<unoccupied cooling and standby heating<standby cooling.

Miscellaneous

The options available in the Miscellaneous tab are listed in the following table. See section "Configurations" on page 12 for more information about parameters.

Table 22. FCU Controller miscellaneous configuration options

function

configuration options

default

Bypass time

0 to 1080 minutes

180 minutes

 

last wins - the last command from either the wall module or from the

 

Override priority

network has priority.

last wins

 

network wins - a network command always has priority until canceled.

 

 

 

 

Demand limit control bump

0 to 18 DDF (0 to 10 K)

3.6 DDF (2 K)

 

 

 

Cool rec ramp

-36 DDF/hour to 0 (-20 K/hour to 0)

0

(cooling optimum start gradient)

 

 

Heat rec ramp

0 to 36 DDF/hour (0 to 20 K/hour)

0

(heating optimum start gradient)

 

 

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EN2B-0285GE51 R0909

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Honeywell W7752D specifications Switching Levels, Zone Options, Miscellaneous

W7752D specifications

The Honeywell W7752D is a versatile and advanced electronic gas combination control designed primarily for use in commercial heating systems. This product stands out for its ability to manage both gas ignition and safety functions, which are critical for maintaining the efficiency and safety of heating appliances. Its robust construction and advanced features make it a popular choice for HVAC professionals and service technicians.

One of the main features of the W7752D is its integration of multiple functions in a single device. It serves as both an automatic gas ignition control and a safety shut-off valve, which simplifies installation and reduces the need for additional components. This integrated design not only enhances reliability but also streamlines maintenance procedures.

Another notable technology utilized in the W7752D is its microprocessor-based control logic. This advanced technology allows for precise management of the ignition sequence, improving the overall efficiency of the heating system. The microprocessor enables the control to adapt to varying operating conditions, ensuring optimal performance even under changing demands.

The W7752D is equipped with features that enhance user-interface and diagnostics capabilities. It includes LED indicators that provide clear information about the operational status and any potential issues. This diagnostics capability facilitates easier troubleshooting, saving time and reducing the likelihood of extended downtimes.

Safety is a primary concern in gas appliances, and the W7752D addresses this with built-in safety mechanisms, including flame detection technologies. These features ensure that the appliance operates safely, automatically shutting down in case of any irregularities during operation. This emphasis on safety not only protects property but also provides peace of mind for users.

In terms of compatibility, the Honeywell W7752D is designed to work with a wide range of gas heating appliances. Its flexibility allows it to be used in various applications, making it suitable for different types of commercial environments. Additionally, the control complies with relevant safety and performance standards, ensuring reliable operation.

In summary, the Honeywell W7752D combines advanced technology with essential safety features, making it a top choice for commercial heating applications. Its integrated design, microprocessor-based control, user-friendly diagnostics, and robust safety mechanisms make it an essential component for efficient and safe gas heating systems. Whether it is for new installations or replacements, the W7752D provides HVAC professionals with the reliability and ease of use they demand.