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Inspect Venting & Air Intake System
Operate the boiler and verify that all vent/air intake
connections are gas-tight and water-tight. Repair any leaks
immediately.
Inspect Condensate Drain
Verify that all connections are watertight, and that
condensate fl ows freely. Repair any leaks immediately.
Inspect System Piping
Verify that all connections are watertight. Repair any leaks
immediately.
Test Ignition System Safety Shutoff
Turn off manual gas shut off valve.
1.
Set thermostat to call for heat.
2.
Boiler begins normal sequence of operation.
3.
After approximately 30 seconds (pre purge and igniter
4.
warm-up period), lamp D illuminates, indicating gas
valve is powered.
After 4 seconds, gas valve closes, lamp D goes out
5.
as integrated boiler control senses that fl ame is not
present.
To restart system, follow operating instructions in,
6.
"Start Up Section of this manual."
Test And Adjust High Limit Control
Set high limit differential to minimum setting. While burner
is operating, adjust setting on high limit control below
actual boiler water temperature. Burner should go off
while circulator continues to operate. Raise limit setting
above boiler water temperature and burner should reignite
after pre purge and igniter warm-up period. Set the high
limit control to the design temperature requirements of
the system. Maximum high limit setting is 200°F. Minimum
high limit setting is 100°F. Return high limit differential to
original setting (20°F)
Test Other Safety Controls
If the boiler is equipped with a low water cut off, a manual
reset high limit, or additional safety controls, test for
operation as outlined by the control manufacturer. Burner
should be operating and should go off when controls are
tested. When safety controls are restored, burner should
reignite.
CHECKOUT PROCEDURE & ADJUSTMENTS
Set Thermostat Heat Anticipator (If Used) And Verify
Thermostat Operation
For a single thermostat connected to the yellow thermostat
lead wires in the furnished fi eld wiring junction box, the
heat anticipator should be set at 0.7 amps. For other
wiring confi gurations, refer to the instructions provided
by the thermostat manufacturer regarding adjustment of
heat anticipator. Cycle boiler with thermostat. Raise the
thermostat to the highest setting and verify boiler goes
through normal start up cycle. Lower thermostat to lowest
setting and verify boiler goes off.
Measure Natural Gas Input Rate
Correct input rate is essential for proper and effi cient
operation of the burner and boiler.
1.
2.
3.
4.
5.
6.
7.
Btuh Input Rate = 3600 x Heating Value From Step 3
8.
26
Determine the elevation at the installation site.
See Table 2
to determine the correct approximate
input rate for the local elevation.
Obtain the yearly average heating value of the
local gas utility. At sea level elevation, it should be
approximately 1000 BTU per standard cubic foot.
Operate boiler for 5 minutes.
Turn off all other gas appliances, extinguishing standing
pilots where applicable.
At the gas meter, measure the time in seconds required
to use one cubic foot of gas.
Calculate the "input rate" according to the following
formula:
Time In Seconds From Step
The measured input rate should be within +0/-2%
of the input rating found in step 2. If not, see
"Adjustments and Checkout" on next page.
6
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