BASO L62AA - Manual (Page 3)

L62AA BASO Safety Shutoff Device Installation Instructions 3
Setup and Adjustments
Checkout
!
WARNING: Risk of Explosion or Fire.
Follow this or an equivalent checkout procedure
after installation. Before leaving the installation,
verify that the L62AA functions properly and that the
system has no gas leaks. Gas leaks can lead to an
explosion or fire, and may result in severe personal
injury or death.
Make sure all components are functioning properly by
performing the following test.
1. Test all joints and connections for leaks with a
soap solution.
2. Set the thermostat to the lowest setting.
3. Close the main manual shutoff valve (“A” valve)
and the pilot valve (“B” valve [see Figure 2]) and
wait at least five minutes for unburned gas to
escape from the appliance.
4. Reopen the “B” valve and ignite pilot gas. Wait for
30 to 45 seconds.
5. Push down the red indicator and aluminum reset
button to its full limit of travel and release. If the
red indicator remains depressed, the unit is
operative. If the red button does not stay
depressed, wait an additional 30 seconds and try
again. If the second attempt is not successful,
check that the thermocouple output meets the
value in Table 1.
6. Open the “A” valve after the red indicator button
remains in the depressed position. The main
burner will ignite from the pilot burner when the
thermostat calls for heat.
7. Disconnect the thermocouple from the L62AA. The
main valve should close immediately. If it does not
close, check for wiring errors. Reconnect the
thermocouple to the L62AA when it is operating
correctly.
8. Make sure the brass hex nut is tight for good
continuity. Do not over tighten.
9. Check the millivoltage output of the thermocouple
and milliampere dropout range at the BASO power
unit terminal to see that they meet the values in
Table 1 and Table 2. Step-by-step procedures for
these checks are included with the Y99AB BASO
Test Kit.
10. Re-light the pilot.
11. Observe at least three complete operating cycles
to make sure that all components are functioning
correctly.
12. Reset the thermostat to a normal temperature
setting before leaving the installation.