Start-Up; Start The Boiler; Check System And Boiler - Lochinvar Crest FBD 2.5 Supplemental Manual

2

Start-up

Final checks before starting the boiler
 Read the Crest Service Manual to familiarize yourself
with SMART TOUCH control module operation. Read
this manual, page 9 for proper steps to start boiler.
 Verify the boiler and system are full of water and all
system components are correctly set for operation.
 Verify the preparation procedures of Section 9 of the
Crest Installation and Operation Manual have been
completed.
 Verify electrical connections are correct and securely
attached.
 Inspect vent piping and air piping for signs of deterioration
from corrosion, physical damage or sagging. Verify air
piping and vent piping are intact and correctly installed
per this manual.

Start the boiler

1. Read and follow the Operating instructions in FIG. 2-1,
page 9.
If boiler does not start correctly
1. Check for loose connections, blown fuse or service switch
off?
2. Is external limit control (if used) open? Is boiler water
temperature above 200°F (93°C)?
3. Is the boiler receiving a call for heat?
4. Is gas turned on at meter and boiler?
5. Is incoming gas pressure less than 4 inches w.c. (.99 kPa)?
If none of the above corrects the problem, refer to the
Troubleshooting Section of the Crest Service Manual.

Check system and boiler

 Check water piping
1. Check system piping for leaks. If found, shut down the
boiler and repair immediately. (See WARNINGS in
the Crest Installation and Operation Manual (startup)
regarding failure to repair leaks.)
2. Vent any remaining air from the system using manual
vents. Air in the system will interfere with circulation
and cause heat distribution problems and noise.
8
Dual Fuel Supplemental Manual
 Check vent piping and air piping
1. Check for gastight seal at every connection, seam of air
piping, and vent piping.
Venting system must be sealed gastight
WARNING
to prevent flue gas spillage and carbon
monoxide emissions, which will result in
severe personal injury or death.
 Check gas piping
1. Check around the boiler for gas odor following the
procedure in the Crest Installation and Operation
Manual (connecting gas supply piping).
If you discover evidence of any gas leak,
WARNING
shut down the boiler at once. Find the
leak source with a bubble test and repair
immediately. Do not start the boiler again
until corrected. Failure to comply could
result in severe personal injury, death, or
substantial property damage.