Startup - Final Checks - Weil-McLain Eco Tec 2 Series Manual

ECO ® Tec series 2 gas-fired water boiler – boiler manual
Startup — final checks
Check for gas leaks
Before starting the boiler, and during initial operation,
use a leak detector or smell near the floor and around
the boiler for gas odorant or any unusual odor. Remove
boiler jacket door and smell the interior of the boiler
jacket.
Do not proceed with startup if there is any
indication of a gas leak. Repair any leak at once
DO NOT adjust or attempt to measure gas valve
outlet pressure. The gas valve is factory-set for the
correct outlet pressure. This setting is suitable for
natural gas and propane, requiring no field adjustment.
Attempting to alter or measure the gas valve outlet
pressure could result in damage to the valve, causing
potential severe personal injury, death or substantial
property damage.
Propane boilers only — Your propane supplier mixes
an odorant with the propane to make its presence
detectable. In some instances, the odorant can fade,
and the gas may no longer have an odor. Before startup
(and periodically thereafter), have the propane supplier
verify the correct odorant level in the gas.
Check thermostat circuits
1. Disconnect wires connected to the
thermostat terminals (see Field
Input 3 and Input 4
wiring, beginning on page 59 for low voltage terminal
locations and application information). Mark the
wires before removing to avoid wiring errors when re-
connecting them
2. Close each thermostat, zone valve and/or relay in the
external circuit one at a time and check the voltmeter
reading at each wire to a ground to ensure no voltage is
being feed back into the boiler's control module.
3.
There should NEVER be a voltage reading when
external devise is closed.
4. If a voltage reading is measured on the incoming wires,
check and correct the external wiring.
DO NOT connect the thermostat terminals to
3-wire zone valves
damage.
5. Once the external thermostat circuit wiring is checked and
corrected if necessary, reconnect the external thermostat
circuit wires.
Part number 550-100-270/0122
.
Input 1, Input 2,
. This could cause control
Inspect/fill condensate system
Inspect/check condensate lines and
fittings
Inspect the condensate drain line, condensate PVC fittings and
condensate trap. (See page 57 for component locations.)
Fill condensate trap with water
1. Remove test port cap on vent adapter (see Figure 111).
2. Pour one cup full of clean water into test port.
3. Ensure condensate trap filled with water.
4. Reinstall test port cap on vent adapter.
Figure 111 Remove test port cap on vent adapter
Remove
test port
cap
The condensate trap must be filled with water during
all times of boiler operation to avoid flue gas emission
from the condensate drain line. Failure to fill the trap
could result in severe personal injury or death.
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