AM Series Boilers and Water Heaters
CHAPTER 9 – OPERATION
Page
98
of
154
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0100_0D
03/28/16
Ph.: 800-526-0288
GF-146
9.11 Boiler Delays, Alarms and Protective Actions
To protect the life of the appliance, improve comfort, and maximize energy savings, the
following timings have been incorporated into the control logic:
a) Pump delay: each time the room setpoint is
satisfied, the circulator pump continues to
run for 4 minutes;
b) DHW delay: each time the domestic
hot water demand is satisfied, a 4 minute delay
must pass before the end of the service;
c) Time delay in restarting the burner in its normal functioning state, every time the burner
stops, there is a delay time of 3 minutes before the boiler restarts again.
9.12 Boiler Circulator Pump Protection
During the summer months, the circulators pumps are run once a day for around 15 seconds to
prevent it from seizing.
9.13 Startup Procedure - Water Heaters
This section applies only to the AM Series water heaters. For boilers, refer to the previous
section.
Water Heater Startup Procedure
1. Open the manual gas shutoff valve.
2. Switch ON electric power to the boiler.
3. If the display shows code Err 65, it means that the polarity has not been observed between
phase and neutral (Call service department to restore, do NOT attempt to repair it).
4. Press key
and
to setup the storage tank water temperature desired, then press
RESET key to save the change.
5.
The flame control will start up the burner.
a) If the burner fails to ignite within 60 seconds, the water heater will automatically attempt
ignition another four times, after which if it fails to start-up, it will shut down and the
display will show
Loc 01
together with icon
.
b) If the boiler goes into any lockout or blocking error, the display will show icon
and the
corresponding burner icon (
or
) will blink.
6. Press the RESET key in order to re-set normal operating conditions.
7. To restore the normal operating condition, press RESET key one time, display will show you
the type of lockout, than press RESET button again (to return to normal display mode, press
and hold the RESET button for at least 5 seconds.
8. The heater will automatically attempt another start-up.
9. Now the heater will continue to operate in relation to the service requested and will indicate
the following on display:
a) The icon
if a domestic hot water service is enabled;
b) Blinking
if a domestic hot water service is active (heater is loading a storage tank).
