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PART 6. START-UP PROCEDURES
is set up with any other external signal here, this should be removed as well, or that external signal will take over
when the 0-10VDC control signal drops below 1.0VDC.
Next, go to Parameter S18 (PS18) in the Parameter menu and choose the appropriate control setting. (include picture
of menu or HMI page)
The PS18 settings are:
• 0=Off (default setting--no external control, any external voltage signal ignored)
• 1=Load Control
• 2=Set Point Control
Load Control mode (PS18=1)
When a 0-10VDC input is used for load control, the range of 0-10VDC corresponds directly to a modulation
percentage (burner firing rate). An input of 10.0VDC results in the maximum default fan speed (modulation) for that
appliance, and 1.0VDC results in the minimum default fan speed. The fan speed displayed on the appliance will
depend on the range of the fan for that particular appliance.
Type
Minimum Fan Setting
(1.0VDC)
Maximum Fan Setting
(10.0VDC)
Voltage increment
800
33%
100%
7.44%
1000
31%
100%
7.67%
1500
24%
100%
8.44%
The following is an example of the effect of changing the voltage signal on an appliance in Load Control mode:
• The operational range of an 800 fan is 33% —100%
• 0 - 0.9V = Appliance off
• 1.0V = 33% Fan speed
• 1.3V = 35% Fan speed (3% modulation)
• 4.0V = 55% Fan speed (33% modulation)
• 6.8V = 76% Fan speed (64% modulation)
• 8.9V = 92% Fan speed (88% modulation)
• 10.0V = 100% Fan speed (100% modulation)
• Each volt = 7.44% fan speed or 11.1% modulation
Set Point Control mode (PS18=2)
When a 0–10VDC input is used for Set Point Control, the range of 0–10VDC corresponds directly to the temperature
set point. Contact customer support for assistance with using this mode as multiple parameters may be modified to
alter bandwidth and set point sensitivity..
Содержание XL800
Страница 6: ...6 PART 1 GENERAL INFORMATION As a Stand Alone Appliance HOT CONTROL MENU NAVIGATION ...
Страница 7: ...7 PART 1 GENERAL INFORMATION Appliance as Part of a Cascade HOT CONTROL MENU NAVIGATION ...
Страница 19: ...19 PART 2 ELECTRICAL B INTERNAL WIRING CONNECTION continued XL BCB LAYOUT ...
Страница 21: ...21 PART 2 ELECTRICAL XL CASCADE BOX ...
Страница 31: ...31 PART 4 VENTING Direct Vent Terminal Clearances ...
Страница 32: ...32 PART 4 VENTING Direct Vent Terminal Clearances continued Other Than Direct Vent Terminal Clearances ...
Страница 33: ...33 PART 4 VENTING Other Than Direct Vent Terminal Clearances continued ...
Страница 69: ...69 PART 10 PARTS BREAKDOWN 1A 1B PART 10 PARTS BREAKDOWN 2 ...
Страница 70: ...70 PART 10 PARTS BREAKDOWN 3 4 5 6 7 8 9A 9B 9C 10 4 ...