Operating Instructions - RBI Futera XLF Series Manual

The following start-up procedure assumes that all water
piping, gas piping and electrical connections are correct
as stated in this manual and the installation meets all
State, Local, and City codes.
See the Futera XLF Control IOM for troubleshooting
information and control operation.

operAtinG instrUctions

operating instructions
1. If, at any time, the boiler will not operate properly, follow the in-
structions "TO TURN OFF GAS TO APPLIANCE," page 28,
and call your service technician or gas supplier.
2. Turn off all electrical power to the boiler.
3. Close main gas shut-off valve (field supplied), Figure 16,
page 22.
4. Purge the gas piping up to the boiler' s manual gas valve (located
ahead of the main gas valve). When the bleeding is complete,
check all gas joints up to the gas valve for leaks.
5. Wait five (5) minutes to clear out any gas.
6. Make sure all limits, pressures switches and safety device contacts
are closed.
7. Open the main gas shut-off valve.
8. Disable any external call for heat, such as from a building manage-
ment system or remote operating controller.
9. Toggle the remote/local switch (in control cabinet — see Fig-
ure 18) to .
remote
10. Turn on electrical power to the boiler.
11. Turn the power switch on the front of the boiler control cabinet
to .
on
12. The HeatNet display will light up when the power is on. If all in-
terlocks are properly closed, the display will say
refer to the XLF HeatNet Control IOM for troubleshooting.
13. Slide the HeatNet control' s low fire switch (on HeatNet control
board) to the position.
LoW Fire
14. The boiler will begin the start-up sequence.
15. Allow the boiler to pre-purge and enter the pilot ignition cycle.
16. If pilot lights (indicated by a good flame signal 5.0 V DC) proceed
to step 18. (See Honeywell R7800 literature for use of a meter to
check flame signal if keypad readout is not available.)
17. If pilot is unstable (indicated by a low or erratic flame signal caus-
ing pilot flame failure), toggle the low fire switch to
then back to to start another cycle (reset the Honeywell
enABLe
control if necessary). Repeat for one or two more times to ensure
the pilot line is purged of all air. If pilot is still unstable, the pilot
gas pressure may need to be increased. See step 18.
18. Pilot pressure adjustment:
a. Switch the Honeywell control to
first 10 seconds of the pilot ignition sequence.
b. Connect one side of a manometer or pressure gauge to the
manometer pressure port (barbed) on the pressure test mani-
fold (located inside control panel). See Figure 18. Leave the
26
Finned copper tube gas boilers & water heaters – Boiler manual
. If not,
stAnDBy
,
DisABLe
position within the
test
other side of the manometer open to the room. DO NOT
connect it to the reference port (left side of panel).
Figure 18
Manometer connections to the test manifold (in
control cabinet)
c. Measure pilot gas pressure by pressing and holding the ser-
vice valve marked
piLot GAs
d. Set pilot gas pressure to 3.0 inches w.c. (± 0.5 inch) by adjust-
ing the pilot gas pressure regulator, inside the air box. Access
from the boiler top cover. See Figure 19.
Figure 19
Access to air trim adjustment and pilot regulator
e. Check pilot air pressure using service valve marked
.
Air
f. Pilot air pressure should be 0.60 inches w.c. (± 0.10 inches).
Combustion readings must be in the range specified
in the following instructions. Adjust the boiler as
necessary to ensure proper combustion.
FTXLF-IOM-HN-1-110308 Copyright 2008 Mestek, Inc.
.
piLot