Check Low Water Cut-Off Device; Check For Gas Leaks; Check Thermostat Circuit; Inspect Condensate Drain Assembly - TriangleTube PRESTIGE Excellence 110 Installation & Maintenance Manual

CHAPTER 10 - START-UP PREPARATION
5. Once the system is completely filled and purged of
all air and sediment, check the system pressure and
check/repair any leaks.
WARNING
Unrepaired system leaks will cause continu-
al makeup water to be added to the boiler.
Continual makeup water will cause mineral
buildup within the heat exchanger, reducing
the heat transfer, causing heat buildup and
eventual heat exchanger failure. This can re-
sult in substantial property damage, serious
injury, or death.

10.3. Check Low Water Cut-Off Device

• The PRESTIGE Excellence is provided with a factory
installed LWCO device that monitors system pres-
sure.
• Access the Boiler Information Menu by following
instructions in Section 9.12 on page 46. Scroll
down to see the current system pressure and verify
it is within the range given in Section 10.2 above.

10.4. Check For Gas Leaks

WARNING
• Prior to start-up and during initial opera-
tion, check for a gas leak using a combus-
tible gas detector. Do not proceed with
the start-up if there is any indication of
a gas leak. Any leaks found must be re-
paired immediately.
• Propane installations only - The propane
supplier mixes an odorant with the pro-
pane to make its presence detectable. In
some cases the odorant can fade and the
gas may no longer have an odor.
• Prior to start-up of the unit and periodi-
cally after start-up have the propane sup-
plier check and verify the odorant level.
• Failure to comply with these instructions
can result in substantial property dam-
age, serious injury, or death.

10.5. Check Thermostat Circuit

• Disconnect the external thermostat wires from the
low voltage terminal strip.
• Connect a voltmeter across the wire ends of the ex-
ternal thermostat wiring.
• Close each thermostat, zone valve and relay in the
external circuit one zone at a time and check the
voltage reading across the wire ends.
There should NEVER be voltage measured at the
•
wire ends.
• If voltage is measured under any condition, check
and correct the external wiring.
NOTICE
In systems using 3-wire zone valves, voltage
backfeed to the unit is a common problem. Use
an isolation relay to prevent voltage from the
external circuit from entering the PRESTIGE Ex-
cellence.
• Reconnect the external thermostat wires to the low
voltage terminal strip.

10.6. Inspect Condensate Drain Assembly

1. Inspect and ensure the Condensate Drain Assembly
is properly installed as described in Section 5.2 on
page 23.
2. Remove the plug from the Condensate Drain As-
sembly and fill with fresh water.
WARNING
The condensate drain assembly must be filled
with water when the PRESTIGE Excellence is
in operation. The condensate drain assembly
prevents flue gas emissions from entering
the condensate line. Failure to ensure trap is
filled with water can result in serious injury,
or death.
3. Re-Install plug in condensate drain assembly.
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