Installation Guide

Part number 550-100-066/0608
83
g a s -f i r e d w at e r b o i l e r — Boiler Manual
Annual startup (continued)
If ame signal still remains low, inspect the vent and 4.
air piping. Then inspect the heat exchanger, follow-
ing the procedures given in this manual for removal
and reinstallation of the head exchanger cover plate
and other boiler components. Clean the exchanger
as described in this manual if necessary.
Check flue gas temperature
Set the boiler to high fire. Then adjust the U-Con-1.
trol module display to view ue gas temperature
and boiler return temperature.
The ue gas temperature should be no more than 2.
54 °F higher than the boiler return temperature.
If the ue temperature is higher than this, shut 3.
down the boiler, allow to cool, and follow the
procedure starting on page 89 to clean the heat
exchanger.
Review with owner
Review the User’s Information Manual with the 1.
owner.
Emphasize the need to perform the maintenance 2.
schedule specified in the User’s Information
Manual (and in this manual as well).
Remind the owner of the need to call a licensed 3.
contractor should the boiler or system exhibit any
unusual behavior.
Remind the owner to follow the proper shutdown 4.
procedure and to schedule an annual startup at the
beginning of the next heating season.
Check boiler relief valve
Inspect the relief valve and lift the lever to verify ow as in the 1.
following warnings, excerpted from a relief valve manufacturer’s
warning label. Before operating any relief valve, ensure that it is
piped with its discharge in a safe area to avoid severe scald potential.
Read manual section 3, page 12, before proceeding further.
Safety relief valves should be reinspected AT LEAST
ONCE EVERY THREE YEARS, by a licensed plumbing
contractor or authorized inspection agency, to ensure
that the product has not been affected by corrosive water
conditions and to ensure that the valve and discharge
line have not been altered or tampered with illegally.
Certain naturally occurring conditions may corrode the
valve or its components over time, rendering the valve
inoperative. Such conditions are not detectable unless
the valve and its components are physically removed and
inspected. This inspection must only be conducted by a
plumbing contractor or authorized inspection agency
— not by the owner. Failure to reinspect the boiler relief
valve as directed could result in unsafe pressure buildup,
which can result in severe personal injury, death or sub-
stantial property damage.
Following installation, the valve lever must be operated
AT LEAST ONCE A YEAR to ensure that waterways
are clear. Certain naturally occurring mineral deposits
may adhere to the valve, rendering it inoperative. When
manually operating the lever, water will discharge and
precautions must be taken to avoid contact with hot
water and to avoid water damage. Before operating lever,
check to see that a discharge line is connected to this valve
directing the ow of hot water from the valve to a proper
place of disposal. Otherwise severe personal injury may
result. If no water ows, valve is inoperative. Shut down
boiler until a new relief valve has been installed.
After following the above warning directions, if the relief valve 2.
weeps or will not seat properly, replace the relief valve. Ensure
that the reason for relief valve weeping is the valve and not over-
pressurization of the system due to expansion tank waterlogging
or under-sizing.