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Honeywell ST7700 Quick Start Manual page 7

Keyboard and display module boiler control system

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Fig. 8—[Auto/Manual] key function.
IN "AUTO" AND OPERATE MODE
Auto
190 PSI
Run
30% Rate
PLACE SYSTEM IN MANUAL CONTROL,
[AUTO/MANUAL] KEY
Man:
190 PSI
Run
30% Rate
MOVE CURSOR TO % RATE TO ADJUST FIRING RATE, [<]
Man:
190 PSI
Run
30% Rate
CHANGE
FROM MANUAL
AUTOMATIC
IN "MAN" AND OPERATE MODE
Man:
190 PSI
Run
30% Rate
PLACE SYSTEM IN AUTOMATIC MODE,
[AUTO/MANUAL] KEY
Auto
190 PSI
Run
30% Rate
5. ENTER key—The ENTER key is used to store a
parameter value in the BCS 7700 microcomputer memory.
If the ENTER key is not pressed, the new value will not be
stored, and the previous value will remain in memory, see
Fig. 9.
6. CLEAR key—The CLEAR key is used to clear a
fault message from the display (the BCS 7700 must
continue to be manually reset for automatic operation),
move the parameter display to the home position of the
parameter list, return the display to the previously dis-
played parameter, silence the alarm, or clear out a param-
eter value entry, see Fig. 10.
FlameSignal
2.5V
OperSetPoint 185 PSI
FlameSignal
2.5V
OperSetPoint 185 PSI
FlameSignal
2.5V
OperSetPoint 185 PSI
CONTROL
TO
CONTROL
FlameSignal
2.5V
OperSetPoint 185 PSI
FlameSignal
2.5V
OperSetPoint 185 PSI
M1454
Fig. 9—[Enter] key function.
IN OPERATE MODE
Auto
190 PSI
Standby GAS
PLACE SYSTEM IN PROGRAM MODE, [MODE] KEY
BLC Program
[v] to set parameters [MODE] to OPERATE
ACCESS PARAMETERS, [v] KEY
BLC Program
[>] to set value
ACCESS PARAMETER VALUE, [>] KEY
BLC Program
[+] to set value
ALTER PARAMETER VALUE [INCREASE BY 3 PSI], [+] KEY
3 TIMES
BLC Program
[+] to set value
ENTER AND STORE ADJUSTED PARAMETER VALUE IN
MEMORY, [ENTER] KEY
BLC Program
[>] to set value
7. +, FAST, - keys—The +, FAST, - keys are used to
adjust the value of a displayed parameter. The FAST key
can be pressed with the + or - key to increase or decrease
the value at a greater rate, see Fig. 11.
7
INSTALLATION
FlameSignal
2.5V
OperSetPoint 200 PSI
System is configured
OperSetPoint 200 PSI
[v] for next
OperSetPoint 200 PSI
[v] for next
OperSetPoint 203 PSI
[ENTER] when done
OperSetPoint 203 PSI
[v] for next
M1455A
63-2287—1
ST7700

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Bcs 7700