Overview of Primary Product

Applications
UP Series
23
MixiMizer - mixing reset pump
The Grundfos MixiMizer, a fully integrated injection
pump and indoor/outdoor controller, is the only pump
and controller system of its kind.
Equipped with a weather responsive control, also
known as indoor/outdoor control or reset control, the
MixiMizer automatically calculates and controls mixed
water temperatures according to outdoor temperatures
in primary/secondary piping systems. The control also
provides pump exercising for 10 seconds every 3 days
and a 20 second postpurge when the heat demand is
removed.
For maximum design flexibility, the MixiMizer can be
integrated into a thermostat or zoning control system
through the user-selectable "external call for heat/
demand input".
A fully serviceable check valve integrated into the pump
housing eliminates ghost flows in primary/secondary
injection systems and zone applications.
LEDs located on the terminal box are designed to
indicate performance and diagnose faults without tools.
Other standard user-selectable features include boiler
protection, system/slab "overtemperature" control and
a 5 °F parallel shift of the heating curve.
Fig. 3 MixiMizer
MixiMizer models includes the following
• Two water-temperature sensors (system supply and
return) prewired (8 feet each)
• One prewired 6-foot line cord
• One outdoor air-temperature sensor
• Two flange gaskets.
Standard features
• Variable-speed output modulation
• System supply-temperature sensor 140 ° F max.
• Boiler return-temperature sensor 135 ° F min.
• Heating curve can be adjusted by 5 ° in parallel
• Pump exercising every three days of no operation.
Optional features
• Outdoor air-temperature sensor (outdoor reset)
• Boiler on/off output.
Fig. 4 Family curves for MixiMizer
TM03 9089 3307
TM03 8844 2607
Position System type Description
a - Min. curve for all models
b Open Max. UP 15-42BUC5
c Open Max. UP 15-42BUC7
d Closed Max. UP 15-42FC
0 2 4 6 8 10 12 14 16 18
Q [US GPM]
0
2
4
6
8
10
12
14
16
[ft]
H
a
d
c
b
UPSeries.book Page 23 Tuesday, September 18, 2007 1:01 PM