Part number 550-100-090/0809
gas
-
fired
water
boiler
—
Boiler Manual
90
U-Control operation and setup — advanced
(continued)
Figure 104
U-Control diagnostic information
(see Figure 102, page 86 for location in menu sequence
Menu/Item
Units
Low
Value
High
Value
Default
Comment
Diagnostics
Temperatures
Status
Text
data
Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being
satisfied, post purge, Warm Weather Shutdown, Trouble
System Supply
°F
data
Temperature of the remote system supply sensor
System Return
°F
data
Temperature of the remote system return sensor
Boiler Out1
°F
data
Temperature of the first sensing element of the boiler’s heat exchanger outlet sensor
Boiler Out2
°F
data
Temperature of the second sensing element of the boiler’s heat exchanger outlet sensor
Boiler In1
°F
data
Temperature of the boiler’s heat exchanger inlet sensor
Flue1
°F
data
Temperature of the first sensing element of the boiler’s flue gas sensor
Flue2
°F
data
Temperature of the second sensing element of the boiler’s flue gas sensor
Outdoor
°F
data
Temperature of the remote outdoor air temperature sensor
Inputs
Status
Text
data
Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being
satisfied, post purge, Warm Weather Shutdown, Trouble
Priority 1
on-off
data
Call for heat status on Priority 1 Input
Priority 2
on-off
data
Call for heat status on Priority 2 Input
Priority 3
on-off
data
Call for heat status on Priority 3 Input
Analog Input
vdc
data
Value of 0–10 VDC input signal on P15 #5 and #6
Manual Limit
open-closed
data
External manual limit P13-1 & P13-2
Auto Limit
open-closed
data
External auto limit P13-3 & P13-4
Low Wtr Cutoff
open-closed
data
Low water cutoff device on P12-3 & P12-4
Blower Tach
rpm
data
Feedback from blower sensor
Flame Signal
no units
data
Number indicating the presence and quality of the flame used to shutdown boiler
Outputs
Gas Valve
on-off
data
Control’s gas valve circuit status
Circulator 1
on-off
data
Control’s circulator 1 relay status
Circulator 2
on-off
data
Control’s circulator 2 relay status
Circulator 3
on-off
data
Control’s circulator 3 relay status
Blower Signal
% of rate
data
Control’s signal controlling the blower speed
Add’l Heat Demand
on-off
data
Control’s signal controlling the additional heat demand
Alarm
on-off
data
Control’s alarm contact status
Analog Output
vdc
data
Value of 0–10 VDC output signal on P16 #1 and #2
Errors
Control Fault
#
0
Displays number of control faults
Ignition Retries
#
0
Displays number of ignition attempts boiler is currently on
Manual Reset Cnt
#
0
Displays number of manual reset lockouts since last cleared
Auto Reset Cnt
#
0
Displays number of auto reset lockouts since last cleared
Lockout History 1
Choose this to view the most recent error recorded
Time & Date
text
data
Displays time and date that lockout occurred
Status
text
data
Displays what the status of the boiler at the time of the error
Manual Reset
yes or none
data
Choose this to view the details of manual reset lockouts
Auto Reset
yes or none
data
Choose this to view the details of auto reset lockouts
Inputs
menu
menu
Choose this to view the status of the Boiler Inputs at the time of the error
Outputs
menu
menu
Choose this to view the status of the Boiler Outputs at the time of the error
Temperatures
menu
menu
Choose this to view the Boiler Temperatures at the time of the error
Lockout History 2
Choose this to view the second most recent error recorded
Time & Date
text
data
Displays time and date that lockout occurred
Status
text
data
Displays what the status of the boiler at the time of the error