23
Mix Channel Settings
The Uponor Climate Co˘ntrol Network System supports
up to five mix channels per installation. Each mix
channel uses a supply-and-return sensor to control the
average temperature in the output device. The Network
System uses an internal function, DeltaT (∆T), for
calculating temperature differentials between the supply
and return legs of an output device.
The system uses eight variables to specify the mix
channel output requirements —four to describe design-
day parameters, two to describe the warm weather
parameters and two for setting mix limits.
These mix channel output requirements are classified
as follows:
• Design-day parameters — describe the mix operation
under full heating load (design conditions)
• Warm weather parameters — describe the mix
operation when the heating load is the lowest
• Mix limits — describe the mix operations at outdoor
temperatures less than design day and greater than
the warm weather point
See for an example of a mixed water
temperature curve.
The design-day parameters specify the mix-channel
output when the outdoor temperature is the coldest
as specified by the American Society of Heating,
Refrigerating and Air-conditioning Engineers (ASHRAE)
for the installation.
The Uponor Climate Co˘ntrol Network System requires
the following four data fields to describe design day.
The warm weather point fixes the supply curve at a
warm temperature (see to view a graph of
the mixed water temperature curve). The warm weather
point tells the control what temperature to provide
when the heat load is small. Two data fields describe
this point.
Following are examples of warm weather mix
temperature (WMT) settings:
Design mix temperature This is the supply water temperature that the installation requires when the outdoor
temperature reaches the coldest that can be expected. This value is produced from the
radiant design program (Uponor System Design Software or Advanced Design Suite™).
Design Delta temperature This is the designed difference between the supply and return leg of the output as required
by the hydronic device (e.g., radiant floor heating panel, baseboard, fan coil, etc.).
Design outdoor temperature This is the temperature value used to control the design mix temperature.
Design indoor temperature This is the indoor temperature that is required when the outdoor temperature is
at the same value as the design outdoor temperature.
Warm weather This is the average required
mix temperature temperature the channel should be
when the outdoor temperature is
warm.
Warm weather This is the temperature
outdoor value used to control the warm
temperature weather mix temperature.
Radiant Floor 70°F 10°F 75°F
Baseboard 130°F 20°F 140°F
Fan Coil 140°F 20°F 150°F
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentários a estes Manuais