Introduction
The C50 / C 75 enables HVAC professionals to accurately test and service all
residential combustion appliances. The extra large backlit LCD displays tw o
p a rameters at one time. Easily choose the desired combustion para m e t e r
with the rotary selector. The optional printer allows you to print your
readings to document your test results.
Features include
• Choose combustion parameter with a rotary selector
• Measure flue temperature and oxygen (C75: also carbon monoxide)
• Calculates carbon dioxide, gross & net efficiency, and excess air
( C 75: also carbon monoxide air free)
• Large backlit LCD, 2 line display
• Protected boot with an integral magnet
• 1 ppm accuracy
• Infrared printer port
• User programmable header
• 16 position memory
Safety Notes
Before using this meter, read all safety information carefully. In
this manual the word
"WARNING"
is used to indicate conditions
or actions that may pose physical hazards to the user. The word
"CAUTION"
is used to indicate conditions or actions that may
damage this instrument.
WARNING!
This analyzer extracts combustion gases that may be toxic in relatively
low concentrations. These gases are exhausted from the back of the
instrument. This instrument must only be used in well-ventilated
locations. It must only be used by trained and competent persons
after due consideration of all the potential hazards.
C o n t rols and Indicators
1.
Display
2.
Infrared Printer Port
3.
ON/OFF:
Turns analyzer ON and OFF.
4.
Print/Back-Light:
Print data (Press and hold until
“
PRINTING
” appears) / Hold to toggle back-light ON or OFF.
5.
Pump/Top Line:
Turns pump ON and OFF / Hold to scroll
through top line display (also selectable through menu).
6. | |
Hold/Store:
Freezes reading on display. Entire display flashes.
Press and hold for 2 seconds to store data in memory.
7.
Rotary Selector
8.
Particle Filter
9.
Water Trap
10.
Analyzer Connections
Main Display Parameters
O 2 :
Oxygen reading in percentage (%).
T f :
Te m p e rature is measured by the flue gas probe in Centigrade
or Fahrenheit. Will show ambient temperature after fresh air
ca l i b ration and “
- - - -
” if the flue probe is disconnected.
C O :
Carbon Monoxide reading displayed in ppm (parts per
million). “
- - - -
” is displayed if there is a fault with the CO
sensor or the instrument has not set to zero correctly,
switch off instrument and try again.
C O a :
Carbon Monoxide air-free reading referenced to an oxygen
level of 0%. Do not confuse this reading with the actual CO
reading as detailed above.
C O
2
:
Carbon Dioxide calculation determined by the type of fuel.
This only shows a reading when a combination test is being
carried out. “
- - - -
” is displayed while in fresh air.
∆
T :
Net temperature calculated by deducting the
A MBIENT
(or
INL ET
) temperature from the measured
FL UE
t e m p e rature. Displays in either Centigrade (˚C) or Fahrenheit
(˚F) and will display “
- - - -
” if the flue probe is not connected.
EFF (G):
Combustion efficiency calculation displayed in percentage.
Gross (G) or Net (N) can be set (see MENU). The calculation
is determined by the fuel type and uses the calculation in
British Standard BS845. The efficiency is displayed during a
combustion test, “
- - - -
” is displayed while in fresh air.
XA IR % :
Excess air calculated from the measured oxygen and type of
fuel used. Displays reading during a combustion test. “
- - - -
” is
displayed while in fresh air.
A MB :
Boiler air
INL ET
t e m p e rature used to calculate the
NET
t e m p e ra t u r e
C50/C75-MAN
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