Ignition Switch Open During Ignition; Safety Pressure Relief Valve Test - Watts Aerco Benchmark OMM-0116 Installation And Start-Up Manual

Benchmark 750-3000 Installation & Startup Manual
SECTION 5 – SAFETY DEVICE TESTING

5.11 IGNITION SWITCH OPEN DURING IGNITION

The Ignition switch (and the Purge switch) is located on the Air/Fuel Valve. To check the
switch, proceed as follows:
Ignition Switch Open During Ignition Check Instructions
1. Set the unit's ON/OFF switch to the OFF position.
2. Place the unit in MANUAL mode and set the valve position between 25% and 30%.
3. Remove the Air/Fuel Valve cover (Figure 5-10a or 5-10b, above) by rotating the cover
counterclockwise to unlock and lift up to remove.
4. Remove one of the two wires (#169 or #170) from the Ignition switch (see Figure 5-11a or
5-11b, above).
5. Initiate a unit start sequence.
6. The unit should begin its start sequence and then shut down and display IGN SWITCH
OPEN DURING IGNITION.
7. Replace the wire on the Ignition switch and press the CLEAR button. The unit should
restart.

5.12 SAFETY PRESSURE RELIEF VALVE TEST

Test the safety Pressure Relief Valve in accordance with ASME Boiler and Pressure Vessel
Code, Section VI.
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OMM-115_D GF-200 5/9/2019
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