Slant/Fin CHS-399 - Manual (Page 32)

Slant Fin Corp.
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Controller and Display CHS Series
30
2.5 Diagnostics
Figure 2-28 Diagnostic Input/Output Screens
Diagnostics – menu screen, accessed by selecting
“Diagnostics” from the “i-Information” screen, allows
the user to view the operational status of the boiler.
Use the up and down (▲▼) buttons to navigate the
menu options; when the desired option is highlighted
select by pressing the “OK” button.
Analog Sensors – indicates the status of all
temperature sensors, flame sensor, blower speed (both
demanded and actual), and optional 4-20mA input
signal; see Figure 2-31.
Digital IO – indicates the status of each on/off input
and output, i.e. pump outputs and thermostat inputs;
see Figure 2-31.
Figure 2-29 Diagnostic Screens
Analog Sensors Digital IO
Analog Sensors
Digital IO
History
Diagnostics
Outlet temp
Inlet temp
Delta T
DHW temp
Stack temp
Outdoor temp
Fan speed
Flame signal
Firing rate
4-20mA input
System sensor
70 o F
70 o F
1 o F
OPEN
71 o F
OPEN
LOW
0.00  A
0 RPM
OPEN
Outlet
Boiler pump (B)
CH pump (C)
DHW pump (A)
Blower/HSI
Eternal ignition
Pilot valve
Main valve
Alarm
Interlock (ILK)
Pre-ignit interlock (PTI)
Load control input (LCI)
STAT (Demand)
Time Of Day
Safety relay
off
off
off
off
off
off
off
off
on
off
off
off
off
off