UEi Test Instruments SMART BELL - Manual (Page 3)

S
afety
N
oteS
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.
P
reflight
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heCkliSt
• Clean particle filter
• Water trap and probe line are empty of water
• Power on and zero
• All hose and thermocouple connections are properly secured
• Flue gas probe is sampling ambient FRESH air
• Water trap is fitted correctly to the instrument
• Flue temperature plug is connected
• Inlet temperature probe is connected if required
S
ettiNg
i
Nlet
t
emPerature
To correctly calculate net temperature and combustion efficiency it is important to have the correct inlet tempera-
ture set. Two methods are available to properly establish the inlet temperature
• Non-ducted systems. If the SmartBell is being used on a system that uses combustion air from the space near the
appliance simply turn the analyzer on without the flue probe connected. The SmartBell will use an ambient sensor inside
the handset as the inlet temperature to determine net temperature.
• Ducted systems. If the SmartBell is being used on a system that brings in outside air for combustion air it is
important to set the inlet temperature prior to taking flue gas readings. To properly set inlet perform the following steps
during startup of the SmartBell
1. Connect the flue temperature connector only to the SmartBell
2. Place the flue probe in the combustion air inlet stream (you will need to drill a _” hole for access)
3. Turn on the SmartBell and allow to complete the zero process.
4. Connect the flue gas connector to the SmartBell and proceed to combustion measurements
• The temperature measured during the zero countdown has now been stored, and will be used to determine
the net temperature.
a
Nalyzer
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oNNeCtioNS
NOTE: Take care when inserting the temperature
probes as the pins are polarized. Insert with the smaller pin
into input marked posotive. (+)
WARNING!
Turning the pump off while the probe is in the flue
will leave toxic gases inside the analyzer. Once data
has been read, it is advisable to purge the
unit with fresh air as soon as possible. To do this,
with the probe removed from the flue, turn ON the
pump. Always allow the readings to return to zero
(0.09 for CO2) prior to shutting the unit off.
(continued on pg.2)
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