Sequence Of Operation Flow - Bosch TW Series Installation, Operation And Maintenance Manual

12 | Sequence of Operation flow

SEQUENCE OF OPERATION FLOW
START
Y1 = ON
YES
POWER/ SWITCHES/SENSOR
STATUS CHECK
V > 18VAC
YES
HPC =
CLOSED
YES
LPC
=CLOSED
YES
FRZ >TEMP
LIMIT
YES
CON > 0
YES
INITIAL
POWER UP
YES
6720220047 (2016/02)
RESET ON
Y
NO
YES
CLEAR FAULTS
NO
NO
CC OUPUT=
ON
NO
YES
TIME >
START
120 SEC
TIMER
NO
NO
TIME > 30
START
TIMER
NO
NO
NO
START
ANTI SHORT CYCLE
NO
START
RANDOM START UP
Subject to change without prior notice
RESET ON R
R = 24VAC
NO
BLINK CODE ON STATUS LED
SOFT LOCKOUT
RECORD ALARM
START COUNTER (IF APPLICABLE)
LOCKOUT CAN BE SET
TO 4 VIA DIP SWITCH
BLINK CODE
YES
ON STATUS LED
SEC
YES
NO
T > ASC OR
RS SEC
Figure # 8
TW Series Water to Water
YES
NO
COUNTER
NEEDED?
NO
YES
CNT = CNT+1
COUNT = 2
OR
COUNT = 4
NO
YES
NO
HARD
LOCKOUT?
YES
BLINK CODE ON STATUS LED
DISPLAY OUTPUT = PULSE
ALR OUTPUT = ON/PULSE
CC OUTPUT = OFF
YES
CC OUTPUT = ON
TW Series Water to Water