Aerco Benchmark 2.0 LN User Manual

Benchmark 2.0 LN Installation, Operation & Maintenance Manual
CHAPTER 6 – SAFETY DEVICE TESTING
Page 76 of 168 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0046_0J
06/18/2015 Phone: 800-526-0288 GF-123
b) The unit will execute a 30 second re-ignition delay and display WAIT RETRY
PAUSE.
c) The unit will then execute a standard ignition sequence and display WAIT
IGNITION RETRY.
10. Since the manual gas shutoff valve is still closed, the unit will fail the ignition retry
sequence. Therefore, it will shut down and display FLAME LOSS DURING IGNITION
following the failed ignition retry cycle.
11. Open the valve previously closed in step 8.
12. Press the CLEAR button. The unit should restart and fire.
SSOV
BLOWER
PROOF
SWITCH
BLOCKED
INLET
SWITCH
AIR
INLET
AIR/FUEL
VALVE
MANUAL
GAS SHUT-
OFF VALVE
PARTIAL LEFT SIDE VIEW
Figure 6-3: Manual Gas Shut-Off Valve Location
6.8 AIR FLOW FAULT TESTS
These tests check the operation of the Blower Proof Switch and Blocked Inlet Switch shown in
Figure 6-3.
1. Disable the blower output drive voltage as follows:
a) Press the MENU key until CONFIGUR-ATION 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 OFF is displayed, then press the ENTER key.
2. Start the unit in the Manual Mode at a valve position between 25% and 30%.
3. The unit should shut down and execute an IGNITION RETRY cycle by performing the
following steps:

Aerco Benchmark 2.0 LN Specifications

General

Brand	Aerco
Model	Benchmark 2.0 LN
Category	Boiler
Language	English