GF
-
128
Innovation Series Water Heaters
Chapter 5
OMM-0079_0B
USER MANUAL
Safety Device Testing
Page
54
of
200
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
•
Ph.: 800-526-0288
07/21/11
Figure 5-3. Manual Gas Shut-Off Valve Location
5.8
AIR FLOW FAULT TESTS
These tests check the operation of the Blower Proof Switch and Blocked Inlet Switch shown in Figure 5-4.
1. Disable the blower output drive voltage as follows:
(a) Press the MENU key until
CONFIGURATION MENU
is displayed.
(b)
Press the ▲ arrow key until the
ANALOG OUTPUT
function is displayed, then press the
CHANGE
key.
(c)
Press the ▼ arrow key until
OFF
is displayed, then press the
ENTER
key.
2. Start the unit in the Manual Mode at a valve position of 25%.
3. The unit should shut down and execute an IGNITION RETRY cycle by performing the following steps:
(a) The unit will execute a 30 second re-ignition delay and display
WAIT RETRY PAUSE.
(b) The unit will then execute a standard ignition sequence and display
WAIT IGNITION RETRY
.
4. The unit should perform two IGNITION RETRY cycles and then shut down on the third successive
ignition attempt. The unit will display AIRFLOW FAULT DURING PURGE.
5. Re-enable the blower output drive voltage by performing the following steps:
(a) Press the
MENU
key until
CONFIGURATION MENU
is displayed.
(b)
Press the ▲ arrow key until the
ANA-LOG OUTPUT
function is displayed, then press the
CHANGE
key.
(c)
Press the ▲ arrow key until
VALVE POSITION 0-10V
is displayed, then press the
ENTER
key.
6. Once the unit has proved flame, turn off the blower by going to the Configuration Menu,
Analog
Output
menu item and select
OFF
.
7. The Blower Proof Switch will open and the blower should stop. The unit should shut down and display
AIRFLOW FAULT DURING RUN
.
8. Go to the Configuration Menu,
Analog Output
item and select
VALVE POSITION 0-10v
.
9. Press the
CLEAR
button. The unit should restart.