Switching Levels, Zone Options, Miscellaneous

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)	-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)	0 to 36 DDF/hour (0 to 20 K/hour)	0
(heating optimum start gradient)

29	EN2B-0285GE51 R0909

W7752D specifications

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