Weil-McLain Evergreen EVG 220 Manual page 82

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gas
DIAGNOSTICS menu
Figure 82
DIAGNOSTICS menu details (see Figure 71, page 67 for access information)
Menu/Item
Temperatures
Status
Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being satisfied, post purge, Warm Weather Shut
down, Trouble
Boiler Out1
Temperature of t
Boiler Out2
Temperature of the second s
Boiler In
Temperature of the boiler's heat exchanger inlet sensor
System Supply
Temperature of the system water after the boiler loop
System Return
Temperature of the system water returning to the boiler loop
Displays where System Supply/Return values are being read from. Most relevant when using multiple sensors connected to the
From Sensor
same Master Boiler Network. When Shadow boilers are connected, this will specify which boiler it is reading.
Flue1
Temperature of the first sensing element of the boiler's flue gas sensor
Flue2
Temperature of the second sensing element of the boiler's flue gas sensor
Outdoor
Temperature of the remote outdoor air temperature sensor
Inputs
Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being satisfied, post purge, Warm Weather Shut
Status
down, Trouble
Input 1
Call for heat status on Input 1 (Input 1 can be TT1 or 0-10VDC input)
Input 2
Call for heat status on Input 2
Input 3
Call for heat status on Input 3
0–10V
Voltage input for target adjust or modulation for single boiler
Linked to Master
For Multiple Boiler Networks. Shows if current control is connected to Master boiler
Demand of Master
For Multiple Boiler Networks. Shows if the Master boiler is calling this boiler heat demand
Manual Limit
External manual limit on low voltage terminal strip
Auto Limit
External auto limit on low voltage terminal strip
Low Wtr Cutoff
Low water cutoff device (inside boiler jacket)
Air P-Switch
Limit device (inside boiler jacket) that will shut off the boiler if flue pressure becomes too high
Closure Switch
P7 jumper circuit closed or open (flow switch, CAD, etc.)
Blower Speed
Feedback from blower sensor
Flame Signal
Number indicating the presence and quality of the flame used to shut down or boost the boiler
Outputs
Current operating status of the boiler. Prepurge, Ignition, Name of the system Type being satisfied, post purge, Warm Weather Shut
Status
down, Trouble
Gas Valve
Control's gas valve circuit status
Circulator 1
Control's circulator 1 relay status
Circulator 2
Control's circulator 2 relay status
Circulator 3
Control's circulator 3 relay status
Boiler Circ
Boiler's circulator
Blower Signal
Control's signal controlling the blower speed
Additional Heat Demand
Additional heat demand contact status
Alarm
Alarm contact status
– 82 –
-
fired water boiler
(continued)
he first sensing element of the boiler's heat exchanger outlet sensor
ensing element of the boiler's heat exchanger outlet sensor
— 220/299/300/399 Boiler Manual
Comment
Part number 550-100-131/0120