UEi C165 Quick Start Manual
GETTING STARTED
FRESH
AIR
PURGE
NAT GAS
C02 8.3%
O2 20.9%
EfG O2++%
Tf 42.4%
Aux
Flue1
Flue 2
Com Test
FRESH AIR
PURGE
TURN
OFF
TIME 5
Prs/Temp
NAT GAS
CO 80P
COa 80P
LOSS O2++%
NAT GAS
C02 8.3%
O2 20.9%
EfG O2++%
PRS/TEMP
PRESS
PRS 0.04i
i= inH20
PRS/TEMP
PRESS
C165 QuiCk Start Guide
TIME 60
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Press
in fresh air and allow to count-
”Power”
down for Fresh Air purge.
Prs/Temp
Exch Test
Rotate selector dial to Flue 1. In fresh air, O2
reading should be 20.9% ±0.3%.
Rotate selector dial to Flue 2. In fresh air, CO reading
should be zero (0).
BASIC CO/COMBUSTION ANALYSIS
Tf 42.4%
Ta 0.03m
Flue1
Aux
Status
Menu Room CO
Ta 0.03m
T2 T1
Flue 2
Flue1
Aux
Status
Menu Room CO
Com Test
Prs/Temp
Exch Test
P1 P2
Connect the flue probe thermocouple connector to T1.
Connect flue probe to water trap.
Connect optional probe to T2.
XAIR O2++%
PRS 0.00i
Flue 2
Flue1
Flue 2
Com Test
Prs/Temp
Exch Test
Status
Menu Room CO
Com Test
Aux
Prs/Temp
Exch Test
Insert Flue probe into stack.
Adjust cone so end of the probe is
approximately at the center of the
stack.
NOTE: You will have to drill a hole
at least 3/8”. Use appropriate
sealing method after testing.
DIFFERENTIAL TEMPERATURE TEST
TO
ZERO
Rotate the selector dial to
Pressure/Temperature.
Flue 2
Flue1
Aux
Status
Menu Room CO
Com Test
Prs/Temp
Exch Test
Rotate selector dial to Flue 1 for:
CO2, O2, Gross efficiency, Flue
temperature, Inlet temperature.
Fuel type can be changed via
MENU or STATUS setting
TO
ZERO
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Prs/Temp
Exch Test
Press ”Pump” to ZERO
(0) pressure sensor.
Rotate selector dial to Flue 2 for:
CO (ppm), Losses calculated, Excess
air %, pressure reading
Fuel type can be changed via
MENU or STATUS setting.
Make any adjustments as needed for
proper combustion and wait for analyzer to display change in readings.
(Repeat as necessary).
T2 T1
P1 P2
Connect probe to T1.
Connect probe to T2.
Compatible with any K-Type
thermocouple probe or clamp.
Once complete, remove probe from
stack, allow analyzer to purge in
fresh air until CO sensor readings
return to ZERO (0) and O2 readings
reading return to 0% to 21%.
Continue to the next test or power
analyzer off by pressing On/Off, if
finished.
NOTE: Print and store functions may
be used at any time during testing.
PRS 0.04i
i= inH20
T1 167,1F
T2 104.3F
T 62.8F
Flue 2
Flue1
Com Test
Connect thermocouples in
test location to start testing
Observe T1, T2 and
differential (Delta T).
T1 167,1F
T2 104.3F
T 62.8F
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Prs/Temp
Exch Test
Press “Print” to print
results.
Press and Hold to log
results.
DRAFT & STATIC PRESSURE TEST
PRS/TEMP
PRESS
TO
ZERO
PRS/TEMP
EXCHANGE
TEST
PRS 0.04i
i= inH20
T1 167,1F
T2 104.3F
T 62.8F
Flue 2
Flue1
Com Test
Aux
Status
Prs/Temp
Exch Test
Press “Print” to print
results.
Press and Hold to log
results.
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Prs/Temp
Exch Test
C165
Rotate the selector dial to
Pressure/Temperature.
PRESS
TO
ZERO
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Prs/Temp
Exch Test
Press ”Pump” to ZERO
(0) pressure sensor.
T2 T1
P1 P2
Connect true draft hose to PI.
Connect to P2 for differential.
Place probe tip in stack to
measure draft.
Connect static pressure hose
Place true draft probe tip in the
flue to measure draft.
You can also use the
combustion probe for
measuring pressure.
for measure differential
pressure.
HEAT EXCHANGER TEST
There are many methods to test heat exchanger integrity. One of these is to observe Excess Air, O2 AND CO readings both before and after the blower turns
on. If the heat exchanger is sealed your O2 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 a pressure increase in the plenum. The result may be a rise in the measured O2 in the stack gas and an increase in the
Excess Air. In some sealed systems the fresh air drawn in the breach may reduce the combustion available leading to an increase in the CO reading. If either of
these situations are present it is probable that there is a problem with the Heat Exchanger which may require additional testing and inspection.
NOTE: Many cracks are invisible to borescopes or the naked eye and only open or separate from pressure or temperature during operation.
TO
START
PRESS
Flue 2
Flue1
Com Test
Aux
Status
Menu Room CO
Rotate selector dial to
EXCH Test, press the
“Print”.
BLOWER ON
NAT GAS
CO 0p
O2 20.0%
XAIR 02++%
TIME 60
Flue 2
Flue1
Com Test
Aux
Prs/Temp
The analyzer will wait 60
seconds and then record the
Post-Blower values for CO,
02 and Excess Air.
Prs/Temp
Exch Test
SETUP
FUEL TYPE
NAT GAS
PRESS
Flue 2
Flue1
Com Test
Aux
Prs/Temp
Confirm the Fuel Type.
Scroll or to switch
a different fuel type.
Press to select fuel
type.
LOG No. 10
12:00:00
CO 0p
O2 20.0%
XAIR 02++%
PRINT
Flue 2
Flue1
Com Test
Aux
Prs/Temp
Test results will automatically be stored to exchange
reports. Report includes both
Pre and post Blower test
segments.
Press to start printing.
See REPORTS section in
this guide.
EXCHANGE
WITH PROBE
IN FRESH
AIR
PRESS
Flue 2
Flue1
Com Test
Aux
Prs/Temp
NOTE: The analyzer will
perform a fresh air purge
if it did not perform one on
start up. Otherwise it will
skip past the zeroing step to
the Blower Off screen. See
manual for details.
Press to continue.
EXCHANGE
ZEROING
TIME 60
Flue 2
Flue1
Com Test
Aux
Prs/Temp
Ensure the analyzer is
in fresh air during the
countdown. The screen
will automatically advance
when complete.
BLOWER OFF
NAT GAS
CO 0p
O2 20.0%
XAIR 02++%
PRESS
Flue 2
Flue1
Com Test
Aux
Prs/Temp
Call for heat.
Observe and wait for O2
readings to stabilize.
After the blower turns on,
press the Button to
start the Post-Blower test.
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