13
COMMISSIONING TEST
The Commissioning Test is based on TB143
Introduced in April 2013, Technical Bulletin 143 from the Heating and Hotwater Industry Council (HHIC), outlines a safer, clear and
comprehensive procedure for commissioning condensing boilers without airgas ratio valves. Rotate the dial to “
COM TEST
” position
and follow the instructions on the screen
TEST 1
Check the boiler at High Fire rate. (Max GAS)
The boiler is switched on at High Fire rate. (Max GAS)
The analyzer is first zeroed in
outside fresh air
.
Once the boiler is stable at high fire rate the probe is inserted into the air inlet of the flue and the CO
2
level is measured. The reading
needs to be stable and less than or equal to 0.20%.
TEST 2
The probe is then inserted into the exhaust outlet of the boiler and the Ratio, CO and CO
2
levels are measured. These levels must be as
per manufacturers instruction. Where manufacturer’s instructions are not available the CO must be less than 350 ppm and the RATIO
must be less than 0.0040.
TEST 3
Checks the boiler at Low Fire flow rate where this is possible.
With the boiler operating stably at Low Fire rate the Ratio, CO and CO
2
levels are measured. MIN GAS
These levels must be as per manufacturers instruction. Where manufacturers’ instructions are not available the CO must be less than
350 ppm and the Flue 2 must be less than 0.0040.
TEST 4
Measures Flow and Return Temperatures from the boiler
All the measured readings are logged and can be printed or transmitted to PC if an optional wireless module is fitted.
HEAT EXCHANGER INTEGRITY TEST
There are many methods to test heat exchange integrity. One of these is to observe the Excess Air, O
2
and CO readings both before and
after the blower turns on. If the heat exchanger is sealed, your O
2
and CO readings should remain fairly stable. A breach in the heat
exchanger may allow fresh air to be forced into the flue after the blower turns on due to pressure increase in the plenum. The result
may be a rise in the measured O
2
in the stack gas and an increase in Excess Air. In some sealed systems the fresh air drawn in through
the breach may reduce the combustion air available leading to an increase in the CO reading. If either of these situations are present it
is probable there is a problem with the Heat Exchanger which may require additional testing and inspections.
NOTE:
Many cracks are invisible to borescopes or the naked eye, and only open or separate from pressure or temperature changes
during operations. Rotate dial to “
EXCH TEST
” Rotate test selector to “
EXCH TEST
”. Call for heat on the system. Observe and wait for
O
2
readings to stabilize.
ROOM CO TEST
No probes or hose connections are required for this test.
Rotate selector dial to Room CO
Press Enter Button to select GENERAL test type
CO readings will be logged every 2 minutes for 30 minutes.
Readings will be saved once the 30 minute test is completed.
Test results and LOG number will be displayed.
Press Print Button to Print the test results.
This LOG will be saved in the REPORTS/ROOM CO MENU screen.
Status
Flu
e 1
Aux
2
eu
lL
F
Com
Test
Prs/
Temp
Exch
Test
Room CO
Combu
stion Analy
zer
C165
CO
C
O2
T
EM
P
PR
S
Status
Flu
e 1
Aux
2
eu
lL
F
Com
Test
Prs/
Temp
Exch
Test
Room CO
Combu
stion Analy
zer
C165
CO
C
O2
T
EM
P
PR
S
www.calcert.com
1.800.544.2843
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