Retrotec DM32 - Manual (Page 17)

Page 17 of 94
©Retrotec Inc. 2014
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Equivalent leakage area per enclosure area at 10 Pa, “EqLA10/area”: sq in/sq ft, sq cm/sq m)

Effective leakage area per enclosure area at 4 Pa, “EfLA4/area”: (sq in/sq ft, sq in/100sq ft, sq ft/sq
ft, sq cm/sq m)
The [Channel B] display is also a key: when tapped, the “Result to display” on [Channel B] will change. In
the list that shows up, tapping a [Result] to highlight it (in brighter red), will select it as the displayed
[Channel B] Result of choice. Once highlighted, the [Result] can be tapped repeatedly to cycle through all
the different units available for display of that Result.
Refer to Retrotec’s Residential & Commercial Airtightness Requirements document for Results required
according to various standards, codes, and regions.
2.6.3. Set the [Range/Device] connected to the gauge
“Device” refers to the calibrated fan or other device being used to conduct the current test in conjunction
with the gauge. It is important to make sure that the correct Device is selected because the calculation for
each of the Results is based on equations that are different for each Device.
“Range” or “Range Configurations” are the rings or plates installed on a calibrated fan to limit the air flow
through it, so that the fan can achieve a measurable Fan Pressure, even when moving only a small amount
of air (for more information, see Retrotec’s
Manual-Door Fan Operation ). Select the Range that matches
the Range Ring or Plate that is installed on the fan to ensure that the gauge performs accurate calculations
and displays correct results.
Table 4: List of devices compatible with the DM32
Device
Manufacturer
Device displayed Description
Retrotec
200 Model 200 fan, DucTester
1000 Model 1000 systems with 0.75 hp yellow wheel rim style fans
2000 Model Q46 and Q56 systems with 0.75 hp yellow foam core fan. Same
curves as 1000.
3000 Older Model Q4E, Q5E and QMG systems with 2 hp yellow foam core
Door Fan. Same curves as 1000.
3000SR Model Q4E, Q5E and QMG systems with 2 hp yellow foam core Door Fan –
all fans are self-referencing (have green tube)
TEC
MN DB Duct testing fan
MN 3 (110V)
0.75 hp black wheel rim style fan MN 3 (230V)
MN 4 (230V)
Exhaust
Exhaust Fan Flow Meter – measures air flow through residential exhaust
fans between 10 and 124 CFM.
TrueFlow® True Flow Grid – measures flow through a residential air handler
Generic Hole Flow Plate with a hole of a known size
Retrotec calibrated fans connected to the gauge with a Speed Control Cable can have their speed of
operation controlled by the gauge through the “Fan Speed” control output.
Fans manufactured by TEC (such as the DuctBlaster or Minneapolis Model 3 or 4) can be controlled by the
gauge “Fan Speed” control output if an optional Retrotec-TEC Fan speed control Adapter is connected
between the gauge and the TEC fan, in line with the Speed Control cable as shown in Figure 12. The
Minneapolis fan speed control must have the cruise input.
Connecting the pressure tubing to your TEC fan as described in Retrotec literature allows the gauge to
correctly calculate results.