Raypak 131 Service Instructions Manual page 14

Operational Flow Chart 1
HEATER OPERATION
Power supplied to
heater
Reset lamp
illuminates
C
Reset button
pushed &
released?
YES
Relay 1 energised
Reset lamp
extinguished
3
(1)
Control board
turned on?
YES
Control board set
to „Manual‟?
YES
NO
Water temp < set
temp - 1ºC?
YES
Control board initiates
call for heat
Relay 2 energised
45º high limit
contacts closed?
YES
5
External switch or
time switch
closed? (if fitted)
YES
Water pressure
switch closed?
YES
55º high limit
contacts closed?
YES
2
TM018 Raypak 131 Type A Pool & Spa Heaters REV: A
D.O.I: 8/04/2009
This document is stored and maintained electronically by
Heater fitted with
auto reset PCB?
NO
D
NO
Reset button
Auto reset safety
circuit board resets
NO
(1) Control board is turned on by pressing
& releasing the „power‟ button.
Control board set to
NO
Is time within auto
YES
set time period?
Relay 1 de-energised
Heater Fitted with
NO
auto reset PCB?
NO
E.I.B. OPERATION
Control board set
to „Manual‟?
NO
Aux 1
enabled?
NO
YES NO
A B
Service. All printed copies not bearing this statement in RED are deemed "uncontrolled"
NO
YES
pushed &
released?
YES
„AUTO‟
NO
YES
Gas valve de-energised
if on (pilot & main valve
NO
Auto reset safety circuit
YES board open circuits gas
Start
Control board set to
NO
YES
Aux 2 Aux 3
enabled? enabled?
YES NO YES NO
A B A B
Dotted line denotes optional
A
electronic interface box (E.I.B.)
Enabled Aux relay(s)
energised
14
45º high limit
contacts close
when temp < 35º
Reset lamp
illuminates
close)
Heater fitted
with auto
reset PCB?
NO
valve circuit
C
Is time within
auto set time
„AUTO‟
period?
Aux 4 Aux 5
enabled? enabled?
YES NO YES NO
A B A B
B
Disabled Aux relay(s)
de- energised
4
YES
D
NO
YES
Aux 6
enabled?
YES NO
A B