134
22 - SEQUENCE OF OPERATION for WATER HEATER
OPEN
CLOSED
Sequence of
operations
Turn the electrical
power on
Is the electrical
net frequency at
60 Hz?
Are line and
neutral net wires
correctly placed?
State of LWCO
input (terminal 103
and 104)
Is the water
pressure higher
than 15 PSI?
Is the DHW
setpoint
satisfied?
Motorized valve
(if any) opens and
local pump or/and
DHW pump stars
Err 64
or
Err 66
Err 65
Loc 02
Err 59
Stand by
Supply or DHW
temp. increases
Is the DHW temp.
near setpoint?
Each burner will
reduce its capacity
Is a burner
capacity
below 10%
After 3 min, the
relative motorized
valve (if any) closes
Is the DHW temp.
decreases?
Water heater
load matching
Supply or DHW
temperature is satisfied
If the water flow
higher than 3.9
GPM?
After 3 minutes
Err 114
Burners will
disable
Are all burner
operating?
Trial for ignition
(50% of the capacity)
Adequate gas
pressure/flow?
Burner in
operation
Is this a single
burner unit?
15 seconds
delay
Is the burner
capacity over 70%
Another burner is required
Fan proof
ignition speed
After 5 try to
ignition Loc 01
Additional burner
not required
After 1 minute
Lock 12
Pumps and motorized
valves (if any) will be
disabled after 4 min.
Stand by
Burners continue
to operate
Burners continue
to operate
Burners continue
to operate
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
YES
Содержание Esteem 399
Страница 3: ...3 SAFETY INSTRUCTIONS ...
Страница 5: ...5 SAFETY INSTRUCTIONS ...
Страница 112: ...112 17 MAINTENANCE ...
Страница 116: ...116 19 SPARE PARTS Spare parts ...
Страница 135: ......