Grundfos UP15-42 Series User manual

L-UP-TL-042 10/01
PRINTED IN USA
Limited Warranty
Products manufactured by GRUNDFOS PUMPS CORPOR-
ATION (GRUNDFOS are warranted to the original user
only to be free of defects in material and workmanship
for a period of 18 months from date of installation, but
not more than 24 months from date of manufacture.
GRUNDFOS' liability under this warranty shall be limited
to repairing or replacing at GRUNDFOS' option, without
charge, F.O.B. GRUNDFOS' factory or authorized service
station, any product of GRUNDFOS manufacture.
GRUNDFOS will not be liable for any costs of removal,
installation, transportation, or any other charges which
may arise in connection with a warranty claim. Products
which are sold but not manufactured by GRUNDFOS are
subject to the warranty provided by the manufacturer
of said products and not by GRUNDFOS' warranty.
GRUNDFOS will not be liable for damage or wear to
products caused by abnormal operating conditions,
accident, abuse, misuse, unauthorized altera-tion or repair,
or if the product was not installed in accordance with
GRUNDFOS' printed installation and operation instructions.
To obtain service under this warranty, the defective
product must be returned to the distributor or dealer of
GRUNDFOS products from which it was purchased
together with proof of purchase and installation date,
failure date, and supporting installation data. Unless
otherwise provided, the distributor or dealer will contact
the GRUNDFOS factory or authorized service station for
instructions. Any defective product to be returned to
the factory or service station must be sent freight
prepaid; documentation supporting the warranty claim
and/or a Return Authorization must be included if so
instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES
ARISING FROM INSTALLATION, USE, OR ANY OTHER
CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or
limitation of incidental or consequential damages and
some jurisdictions do not allow limitations on how long
implied warranties may last. Therefore, the above
limitations or exclusions may not apply to you. This
warranty gives you specific legal rights and you may also
have other rights which vary from jurisdiction to
jurisdiction.
Grundfos Variable Speed
Circulator Pump
1 .Shipment
Inspe tion
Page 2
2 .General
Page 2
3 .Operational
Limits
Page 3
4 .Pump
Installation
Page 4
5 .
6 .Ele tri al
Page 5
7 .Settings
Page 7
Pumps In orporating the
VS, Variable Speed Control
8 .Qui k
Referen e
Page 9
Installation
Requirements
Page 5

When installing and using this electrical equipment,
basic safety precautions should always be followed,
including the following:
The installer must ensure that this control and its
wiring are isolated and/or shielded from strong
sources of electromagnetic noise. Conversely, this
Class B digital apparatus complies with Part 15 of
the FCC Rules and meets all requirements of the
Canadian Interference-Causing Equipment
Regulations. However, if this control does cause
harmful interference to radio or television
reception, which can be determined by turning
the control off and on, the user is encouraged to
try to correct the interference by reorienting or
relocating the receiving antenna, relocating the
receiver with respect to this control, and/or
connecting the control to a different circuit from
that to which the receiver is connected.
CAUTION: The non-metallic enclosure does not
provide grounding between conduit connections.
Use grounding type bushings and jumper wires.
CAUTION:  Improper installation and operation of
this control could result in damage to the equip-
ment and possibly even personal injury. It is your
responsibility to ensure that this control is safely
installed according to all applicable codes and
standards. This electronic control is not intended
for use as a primary limit control. Other controls
that are intended and certified as safety limits
must be placed into the control circuit.
Page 1
CONGRATULATIONS!
You are now the fortunate owner of a Grundfos
Variable Speed PUMP. It has been carefully
inspected and tested before shipment. It should
give you long, efficient, trouble-free service. For
maximum performance and reliability, please
follow the simple instructions in this manual.
Page10
Figure 8A - Control Layout
0.1µF
10µF
crystal
100µ
100 µH
Triac
0.5 VA
transformer
wire
clamp
Power: 120 V ±10% 50 60 Hz 240 VA Var. Speed: 120 V (ac) 1.8 A, 1 12 hp
Out V
Com (-)
Dem I
Demand
Sup
Com
Ret
ON
OFF
ABCD
Made in Canada
1
Meets Class B: Canadian ICES FCC Part 15
+
-
106-1
®
106-0 Demand:
20 - 30 V (ac)
0.1 VA
Use copper
conductors only Class II only
106-3106-2
MOV
0.1µF
WARNING!
All field wiring to be low voltage. Power for
control is provided through the power cord
supplying power to the pump.
Use copper conductors only.
Disconnect all power sources prior to
servicing.

Page 9 Page 2
8. Qui k Referen e 1. Shipment Inspe tion
Check the contents of this package. Care should be
taken to ensure the pump is NOT dropped or
mishandled; dropping will damage the pump.
Grundfos Variable Speed Pump Package Includes:
• One Grundfos UP15-42 Variable Speed pump
with integral control or one Grundfos UP26
Variable Speed pump with integral control.
• One 6’ line cord with 115 V plug, pre-wired into
control unit.
• Two flange gaskets
• Installation and Operating Instructions.
2. General
• All minimum and maximum settings are
operating, not safety limits. Necessary auxiliary
equipment and safety devices must be added.
• Offset dial provides fine tuning for input signal.
• Manual % dial provides manual speed control.
• Range of signal is selected through dip switch
A.
• Type of signal used is selected through dip
switch B.
• Minimum speed at 0 or 15% is selected
through dip switch C.
• Speed control from external signal or manual
% dial is selected through dip switch D.
• Pump Exercising: After every three days of no
operation, the control will exercise the pump
for 10 seconds. The % Out LED will be on
during exercising.
• As variable speed output modulates, the
control flashes the % out LED on for ¼ second
and off for ¼ to 2 1/2 seconds.
• The % output is run at 100% for 3 seconds after
power up reset for all modes of operation.
Voltage Speed Control Signal Cir uit Rating
Terminals : Out/V & Com (-
0-10VDC
5mA Max
Current Speed Control Signal Cir uit Rating
Terminals : Dem/I & Com (-
0-20mA DC
5VDC Max
WARNING!
All field wiring to be low voltage. Power for
control is provided through the power cord
supplying power to the pump.
se copper conductors only.
Disconnect all power sources prior to servicing.
POSITION
ON OFF DEFAULT
SWITCH
mA (V) DC mA
0-10V
0-20mA
2-10V
4-20mA
min speed
15%
min speed
off
speed ontrol
external
2-10V
4-20mA
min speed
off
speed ontrol
manual % dial
speed ontrol
external
A
B
C
D
Risk of ele tri sho k.  This pump is supplied with
a grounding conductor and grounding-type
attachment plug. To reduce the risk of electric
shock, be certain that it is connected only to a
properly grounded, grounding type receptacle.

Multi Fun tion Dial On Terminal Box
Offset Dial (When dip swit h D is on)
The Offset dial allows the user to fine tune the input
signal. The input signal may be varied plus or minus 1-
5%. This offset will affect the signal through it's entire
range. The factory default is 0. The offset setting
cannot increase the output to greater than 100% or less
than the selected minimum output of either 0% or 15%.
Example:
The measured input signal is 2.1-10.1V and as a result
the pump does not shut off because the signal doesn't
drop to 2V. The dial is set to -5%
and the input signal is offset
down to 2.0-9.6V. The pump
will now shut off, however the
pump will not reach the full 10V
speed now, due to the offset.
Manual % Dial (When dip swit h D is off)
The manual % dial allows the speed of the pump to be
manually adjusted and set by the user. The speed of
the pump may be manually adjusted anywhere from
min to 100%, but once set remains fixed at that speed.
The "min" position on the dial will either be equal to
"OFF" or "15%" depending on the position of dip switch
C. The factory default is 50%.
Installcontrolontothepump.Insertthe115Vplugon
thelinecordfromthepumpintoaproperlygrounded
115Voutlet.Thiswillapplypowertothepump/control.
Performan e Indi ator LEDs (Fig. 7 )
Power ON (green indicates power is applied.
% Out  (Yellow indicates the speed of the pump by
flashing at different rates.
Before You Leave
• Place this brochure, and all other brochures
relating to the installation, in a conspicuous
location near the control for future reference.
• It is important to explain the operation of this
control within the system to the end user and to
anyone else who may be operating the system.
Page 8
Page 3
3. Operational Limits
Control Signal Input Range
Voltage signal range: 0-10V(DC or 2-10V(DC
Current signal range: 0-20mA or 4-20mA
Grundfos Variable Speed pumps are designed to pump
liquids compatible with their cast iron pump housing
construction. They are recommended for use in closed
hydronic systems. Grunfos Variable Speed pumps are
for Indoor Use Only.
Grundfos Variable Speed Pumps are intended for use
with water, or a 50/50 mixture by weight of propylene
glycol.
UP15-42F/VS 115V 60 Hz Variable Speed Pump
Maximum fluid temperature: 205°F (96°C
Maximum ambient:
• 115°F (46°C with control module vertical
(Fig. 4a .
• 115°F (46°C with control module under
pump and horizontal (Fig. 4B .
• 105°F (40°C with control module on top of
pump and horizontal (Fig 4B .
Maximum Working Pressure: 145 PSI
Minimum Inlet Pressure: 5 PSI
UP26-96F/VS 115V 60HZ Variable Speed Pump
UP26-64F/VS 115V 60HZ Variable Speed Pump
Maximum fluid temperature: 195°F (90°C
Maximum ambient:
• 105°F (40°C with control module vertical
(Fig. 4A .
• 105°F (40°C with control module under
pump and horizontal (Fig. 4B .
• 92°F (33°C with control module on top of
pump and horizontal (Fig. 4B .
Maximum Working Pressure: 145 PSI
Minimum Inlet Pressure: 5 PSI
Figure 7C - Performance
indicator LEDs
Figure 7B - % Offset
Offset /
Manual %
-5%
0
-1
-2
-3
-4
+1
+2
+3
+4
+5%
Min 100%

Page 7 Page 4
4. Pump Installation
Remove the control from the pump and install pump in
piping.
Position of terminal box:
Prefered installation of the pump will have the
terminal box located to one side of the pump or the
other, with the conduit entry down.
If the terminal box position needs to be changed, it is
best to do so before installation. However, if the pump
is already installed, ensure that the electrical supply is
turned off and close the isolation valves before
removing the Allen screws.
To Change terminal box position:
• Remove the four (4 Allen screws (4 or 5mm
wrench while supporting the stator (motor .
• Carefully separate the stator from the pump
chamber and rotate it to the correct terminal box
orientation.
• Replace the Allen screws and tighten diagonally
and evenly (7 ft. –lb. torque .
• Check that the motor shaft turns freely. Remove
the large screw in the middle of the nameplate,
insert a small flat blade screwdriver into the end
of the shaft, and turn gently.
• If the shaft does not turn easily, repeat the
disassembly/reassembly process.
Pump Mounting: For Indoor Use Only
Arrows on the side or bottom of the pump chamber
indicate direction of flow through the pump. Grundfos
Variable Speed pumps can be installed in both vertical
and horizontal lines.
Figure 4A - Prefered Terminal
Box Orientation Figure 4B - Optional Terminal Box
Orientation (see Operational Limits
Setting Dip Switches
Figure 7A -
Dip Switches ⇑⇑
⇑⇑
⇑
Dip swit h settings
POSITION
eature Explanation
Dip swit h C - minimum speed off/minimum speed
15%. When dip switch C is in the ON position the
variable speed of the pump will have a range from
minimum speed = off to maximum speed = 100%.
When dip switch C is in the OFF position the variable
speed of the pump will have a range from minimum
speed = 15% to a maximum speed = 100%.
Dip swit h D - speed control external/speed control
maximum % dial. When dip switch D is in the ON
position an external V(dc /mA signal will cause the
pump speed to vary and the dial on the terminal box
will function in the -5% to +5% mode. When dip switch
D is in the OFF position turning the manual % dial will
vary the pump speed. The pump will not respond to an
external V(dc /mA signal even if one is present. The
terminal box and the dial will function in the minimum
to 100% mode.
7. Settings
ON OFF DEFAULT
SWITCH
mA (V) DC mA
0-10V
0-20mA
2-10V
4-20mA
min speed
15%
min speed
off
speed ontrol
external
2-10V
4-20mA
min speed
off
speed ontrol
manual % dial
speed ontrol
external
A
B
C
D
ONON
ONON
ON

Page 5 Page 6
The pump must be installed with the motor shaft
positioned horizontally. Under no circumstances
should the pump be installed with the shaft
vertical or where the shaft falls below the horizon-
tal plane (Fig. 4C .
5. Installation
Requirements
• Thoroughly clean and flush the system prior
to pump installation
• Ensure that water does not enter the terminal
box during the installation process.
•DO NODO NO
DO NODO NO
DO NOT ST S
T ST S
T STT
TT
TARAR
ARAR
ART T
T T
T TT
TT
THH
HH
HE PUE PU
E PUE PU
E PUMP UMP U
MP UMP U
MP UNN
NN
NTT
TT
TII
II
IL L
L L
L TT
TT
THH
HH
HE SE S
E SE S
E SYY
YY
YSS
SS
STT
TT
TEMEM
EMEM
EM
HAS BEEN FILLED AND CHECKED FOR LEAKS.HAS BEEN FILLED AND CHECKED FOR LEAKS.
HAS BEEN FILLED AND CHECKED FOR LEAKS.HAS BEEN FILLED AND CHECKED FOR LEAKS.
HAS BEEN FILLED AND CHECKED FOR LEAKS.
• Do not use the pump to vent the system.
• Never operate the pump dry. The bearings
require water lubrication and will be dam-
aged otherwise.
• Fill system with water. This will result in
immediate lubrication of the bearings.
• Operate the pump for 5 minutes, when
control installation is complete, to purge
remaining air from the bearing chamber. This
is especially important when installing the
pump during the off-season.
Figure 4C
6. Ele tri al
Provisions for a 115 V grounded outlet within 6
feet of the pump mounting location, should be
made.
All ele tri al work should be performed by a qualified
ele tri ian in a ordan e with the latest edition of the
National Ele tri al Code, lo al odes and regulations.
All speed control signal wiring terminates in the
wiring chamber on the control. All field installed
wiring should meet or exceed requirements for
class 2 wiring per article 725 of the National
Electrical Code rated at 30VAC/250VA.
Test the Speed Control Signal Wiring.
Make sure exposed wires and bare terminals are
not in contact with other wires or grounded
surfaces. Turn on the control signal and measure
the voltage/mA across the leads using a voltmeter
to confirm the pump signal is present.
Ele tri al Conne tions To The Control
CAUTION: The installer should confirm that no
current/voltage is present at any of the wires.
Current Speed Control Signal Connections:
Connect the current signal wires to terminals
"Com(- ” and “DEM/I” (Fig 6A. .
Voltage Speed Control Signal Connections:
Connect the voltage signal wires to the “Com (- ”
and “Out/V” terminals (Fig. 6B .
Note: Control signal wires must be run through and
secured by the stain relief on the terminal board.
Note: No speed ontrol signal is ne essary if speed
is to be regulated using the manual % dial.
Dem/I
Com (-)
Out/V
Figure 6A - Current
connections to the
(Com/Dem/I control
Dem / I
Com (-)
Out/V
Figure 6B - Voltage
connections to the
(Com/Out/V control
+
-
-
+
Recommended
Optional
DO NOT
Mount Motor Shaft
in Vertical Position

Page 5 Page 6
The pump must be installed with the motor shaft
positioned horizontally. Under no circumstances
should the pump be installed with the shaft
vertical or where the shaft falls below the horizon-
tal plane (Fig. 4C .
5. Installation
Requirements
• Thoroughly clean and flush the system prior
to pump installation
• Ensure that water does not enter the terminal
box during the installation process.
• DO NOT START THE PUMP UNTIL THE SYSTEM
HASBEEN FILLEDAND CHECKEDFOR LEAKS.
• Do not use the pump to vent the system.
• Never operate the pump dry. The bearings
require water lubrication and will be dam-
aged otherwise.
• Fill system with water. This will result in
immediate lubrication of the bearings.
• Operate the pump for 5 minutes, when
control installation is complete, to purge
remaining air from the bearing chamber. This
is especially important when installing the
pump during the off-season.
Figure 4C
6. Ele tri al
Provisions for a 115 V grounded outlet within 6
feet of the pump mounting location, should be
made.
All ele tri al work should be performed by a qualified
ele tri ian in a ordan e with the latest edition of the
National Ele tri al Code, lo al odes and regulations.
All speed control signal wiring terminates in the
wiring chamber on the control. All field installed
wiring should meet or exceed requirements for
class 2 wiring per article 725 of the National
Electrical Code rated at 30VAC/250VA.
Test the Speed Control Signal Wiring.
Make sure exposed wires and bare terminals are
not in contact with other wires or grounded
surfaces. Turn on the control signal and measure
the voltage/mA across the leads using a voltmeter
to confirm the pump signal is present.
Ele tri al Conne tions To The Control
CAUTION: The installer should confirm that no
current/voltage is present at any of the wires.
Current Speed Control Signal Connections:
Connect the current signal wires to terminals
"Com(- ” and “DEM/I” (Fig 6A. .
Voltage Speed Control Signal Connections:
Connect the voltage signal wires to the “Com (- ”
and “Out/V” terminals (Fig. 6B .
Note: Control signal wires must be run through and
secured by the stain relief on the terminal board.
Note: No speed ontrol signal is ne essary if speed
is to be regulated using the manual % dial.
Dem / I
Com (-)
Out/V
Figure 6A - Current
connections to the
(Com/Dem/I control
Dem / I
Com (-)
Out/V
Figure 6B - Voltage
connections to the
(Com/Out/V control
+
-
-
+
Recommended
Optional
DO NOT
Mount Motor Shaft
in Vertical Position

Page 7 Page 4
4. Pump Installation
Remove the control from the pump and install pump in
piping.
Position of terminal box:
Prefered installation of the pump will have the
terminal box located to one side of the pump or the
other, with the conduit entry down.
If the terminal box position needs to be changed, it is
best to do so before installation. However, if the pump
is already installed, ensure that the electrical supply is
turned off and close the isolation valves before
removing the Allen screws.
To Change terminal box position:
• Remove the four (4 Allen screws (4 or 5mm
wrench while supporting the stator (motor .
• Carefully separate the stator from the pump
chamber and rotate it to the correct terminal box
orientation.
• Replace the Allen screws and tighten diagonally
and evenly (7 ft. –lb. torque .
• Check that the motor shaft turns freely. Remove
the large screw in the middle of the nameplate,
insert a small flat blade screwdriver into the end
of the shaft, and turn gently.
• If the shaft does not turn easily, repeat the
disassembly/reassembly process.
Pump Mounting: For Indoor Use Only
Arrows on the side or bottom of the pump chamber
indicate direction of flow through the pump. Grundfos
Variable Speed pumps can be installed in both vertical
and horizontal lines.
Figure 4A - Prefered Terminal
Box Orientation Figure 4B - Optional Terminal Box
Orientation (see Operational Limits
Setting Dip Switches
Figure 7A -
Dip Switches
Ý
Dip swit h settings
POSITION
eature Explanation
Dip swit h C - minimum speed off/minimum speed
15%. When dip switch C is in the ON position the
variable speed of the pump will have a range from
minimum speed = off to maximum speed = 100%.
When dip switch C is in the OFF  position the variable
speed of the pump will have a range from minimum
speed = 15% to a maximum speed = 100%.
Dip swit h D - speed control external/speed control
maximum % dial. When dip switch D is in the  ON
position an external V(dc /mA signal will cause the
pump speed to vary and the dial on the terminal box
will function in the -5% to +5% mode. When dip switch
D is in the OFF  position turning the manual % dial will
vary the pump speed. The pump will not respond to an
external V(dc /mA signal even if one is present. The
terminal box and the dial will function in the minimum
to 100% mode.
7. Settings
ON OFF DEFAULT
SWITCH
mA (V) DC mA
0-10V
0-20mA
2-10V
4-20mA
min speed
15%
min speed
off
speed ontrol
external
2-10V
4-20mA
min speed
off
speed ontrol
manual % dial
speed ontrol
external
A
B
C
D
ON

Multi Fun tion Dial On Terminal Box
Offset Dial (When dip swit h D is on)
The Offset dial allows the user to fine tune the input
signal. The input signal may be varied plus or minus 1-
5%. This offset will affect the signal through it's entire
range. The factory default is 0. The offset setting
cannot increase the output to greater than 100% or less
than the selected minimum output of either 0% or 15%.
Example:
The measured input signal is 2.1-10.1V and as a result
the pump does not shut off because the signal doesn't
drop to 2V. The dial is set to -5%
and the input signal is offset
down to 2.0-9.6V. The pump
will now shut off, however the
pump will not reach the full 10V
speed now, due to the offset.
Manual % Dial (When dip swit h D is off)
The manual % dial allows the speed of the pump to be
manually adjusted and set by the user. The speed of
the pump may be manually adjusted anywhere from
min to 100%, but once set remains fixed at that speed.
The "min" position on the dial will either be equal to
"OFF" or "15%" depending on the position of dip switch
C. The factory default is 50%.
Installcontrolontothepump.Insertthe115Vplugon
thelinecordfromthepumpintoaproperlygrounded
115Voutlet.Thiswillapplypowertothepump/control.
Performan e Indi ator LEDs (Fig. 7 )
Power ON (green indicates power is applied.
% Out  (Yellow indicates the speed of the pump by
flashing at different rates.
Before You Leave
• Place this brochure, and all other brochures
relating to the installation, in a conspicuous
location near the control for future reference.
• It is important to explain the operation of this
control within the system to the end user and to
anyone else who may be operating the system.
Page 8
Page 3
3. Operational Limits
Control Signal Input Range
Voltage signal range: 0-10V(DC or 2-10V(DC
Current signal range: 0-20mA or 4-20mA
Grundfos Variable Speed pumps are designed to pump
liquids compatible with their cast iron pump housing
construction. They are recommended for use in closed
hydronic systems. Grunfos Variable Speed pumps are
for Indoor Use Only.
Grundfos Variable Speed Pumps are intended for use
with water, or a 50/50 mixture by weight of propylene
glycol.
UP15-42F/VS 115V 60 Hz Variable Speed Pump
Maximum fluid temperature: 205°F (96°C
Maximum ambient:
• 115°F (46°C with control module vertical
(Fig. 4a .
• 115°F (46°C with control module under
pump and horizontal (Fig. 4B .
• 105°F (40°C with control module on top of
pump and horizontal (Fig 4B .
Maximum Working Pressure: 145 PSI
Minimum Inlet Pressure: 5 PSI
UP26-96F/VS 115V 60HZ Variable Speed Pump
UP26-64F/VS 115V 60HZ Variable Speed Pump
Maximum fluid temperature: 195°F (90°C
Maximum ambient:
• 105°F (40°C with control module vertical
(Fig. 4A .
• 105°F (40°C with control module under
pump and horizontal (Fig. 4B .
• 92°F (33°C with control module on top of
pump and horizontal (Fig. 4B .
Maximum Working Pressure: 145 PSI
Minimum Inlet Pressure: 5 PSI
Figure 7C - Performance
indicator LEDs
Figure 7B - % Offset
Offset /
Manual %
-5%
0
-1
-2
-3
-4
+1
+2
+3
+4
+5%
Min 100%

Page 9 Page 2
8. Qui k Referen e 1. Shipment Inspe tion
Check the contents of this package. Care should be
taken to ensure the pump is NOT dropped or
mishandled; dropping will damage the pump.
Grundfos Variable Speed Pump Package Includes:
• One Grundfos UP15-42 Variable Speed pump
with integral control or one Grundfos UP26
Variable Speed pump with integral control.
• One 6’ line cord with 115 V plug, pre-wired into
control unit.
• Two flange gaskets
• Installation and Operating Instructions.
2. General
• All minimum and maximum settings are
operating, not safety limits. Necessary auxiliary
equipment and safety devices must be added.
• Offset dial provides fine tuning for input signal.
• Manual % dial provides manual speed control.
• Range of signal is selected through dip switch
A.
• Type of signal used is selected through dip
switch B.
• Minimum speed at 0 or 15% is selected
through dip switch C.
• Speed control from external signal or manual
% dial is selected through dip switch D.
• Pump Exercising: After every three days of no
operation, the control will exercise the pump
for 10 seconds. The % Out LED will be on
during exercising.
• As variable speed output modulates, the
control flashes the % out LED on for ¼ second
and off for ¼ to 2 1/2 seconds.
• The % output is run at 100% for 3 seconds after
power up reset for all modes of operation.
Voltage Speed Control Signal Cir uit Rating
Terminals : Out/V & Com (-
0-10VDC
5mA Max
Current Speed Control Signal Cir uit Rating
Terminals : Dem/I & Com (-
0-20mA DC
5VDC Max
WARNING!
All field wiring to be low voltage. Power for
control is provided through the power cord
supplying power to the pump.
se copper conductors only.
Disconnect all power sources prior to servicing.
POSITION
ON OFF DEFAULT
SWITCH
mA (V) DC mA
0-10V
0-20mA
2-10V
4-20mA
min speed
15%
min speed
off
speed ontrol
external
2-10V
4-20mA
min speed
off
speed ontrol
manual % dial
speed ontrol
external
A
B
C
D
Risk of ele tri sho k.  This pump is supplied with
a grounding conductor and grounding-type
attachment plug. To reduce the risk of electric
shock, be certain that it is connected only to a
properly grounded, grounding type receptacle.

When installing and using this electrical equipment,
basic safety precautions should always be followed,
including the following:
The installer must ensure that this control and its
wiring are isolated and/or shielded from strong
sources of electromagnetic noise. Conversely, this
Class B digital apparatus complies with Part 15 of
the FCC Rules and meets all requirements of the
Canadian Interference-Causing Equipment
Regulations. However, if this control does cause
harmful interference to radio or television
reception, which can be determined by turning
the control off and on, the user is encouraged to
try to correct the interference by reorienting or
relocating the receiving antenna, relocating the
receiver with respect to this control, and/or
connecting the control to a different circuit from
that to which the receiver is connected.
CAUTION: The non-metallic enclosure does not
provide grounding between conduit connections.
Use grounding type bushings and jumper wires.
CAUTION:  Improper installation and operation of
this control could result in damage to the equip-
ment and possibly even personal injury. It is your
responsibility to ensure that this control is safely
installed according to all applicable codes and
standards. This electronic control is not intended
for use as a primary limit control. Other controls
that are intended and certified as safety limits
must be placed into the control circuit.
Page 1
CONGRATULATIONS!
You are now the fortunate owner of a Grundfos
Variable Speed PUMP. It has been carefully
inspected and tested before shipment. It should
give you long, efficient, trouble-free service. For
maximum performance and reliability, please
follow the simple instructions in this manual.
Page10
Figure 8A - Control Layout
0.1µF
10µF
crystal
100µ
100 µH
Triac
0.5 VA
transformer
wire
clamp
Power: 120 V ±10% 50 60 Hz 240 VA Var. Speed: 120 V (ac) 1.8 A, 1 12 hp
Out V
Com (-)
Dem I
Demand
Sup
Com
Ret
ON
OFF
ABCD
Made in Canada
1
Meets Class B: Canadian ICES FCC Part 15
+
-
106-1
®
106-0 Demand:
20 - 30 V (ac)
0.1 VA
Use copper
conductors only Class II only
106-3106-2
MOV
0.1µF
WARNING!
All field wiring to be low voltage. Power for
control is provided through the power cord
supplying power to the pump.
Use copper conductors only.
Disconnect all power sources prior to
servicing.

L-UP-TL-042 10/01
PRINTED IN USA
Limited Warranty
Products manufactured by GRUNDFOS PUMPS CORPOR-
ATION (GRUNDFOS are warranted to the original user
only to be free of defects in material and workmanship
for a period of 18 months from date of installation, but
not more than 24 months from date of manufacture.
GRUNDFOS' liability under this warranty shall be limited
to repairing or replacing at GRUNDFOS' option, without
charge, F.O.B. GRUNDFOS' factory or authorized service
station, any product of GRUNDFOS manufacture.
GRUNDFOS will not be liable for any costs of removal,
installation, transportation, or any other charges which
may arise in connection with a warranty claim. Products
which are sold but not manufactured by GRUNDFOS are
subject to the warranty provided by the manufacturer
of said products and not by GRUNDFOS' warranty.
GRUNDFOS will not be liable for damage or wear to
products caused by abnormal operating conditions,
accident, abuse, misuse, unauthorized altera-tion or repair,
or if the product was not installed in accordance with
GRUNDFOS' printed installation and operation instructions.
To obtain service under this warranty, the defective
product must be returned to the distributor or dealer of
GRUNDFOS products from which it was purchased
together with proof of purchase and installation date,
failure date, and supporting installation data. Unless
otherwise provided, the distributor or dealer will contact
the GRUNDFOS factory or authorized service station for
instructions. Any defective product to be returned to
the factory or service station must be sent freight
prepaid; documentation supporting the warranty claim
and/or a Return Authorization must be included if so
instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES
ARISING FROM INSTALLATION, USE, OR ANY OTHER
CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or
limitation of incidental or consequential damages and
some jurisdictions do not allow limitations on how long
implied warranties may last. Therefore, the above
limitations or exclusions may not apply to you. This
warranty gives you specific legal rights and you may also
have other rights which vary from jurisdiction to
jurisdiction.
Grundfos Variable Speed
Circulator Pump
1 .Shipment
Inspe tion
Page 2
2 .General
Page 2
3 .Operational
Limits
Page 3
4 .Pump
Installation
Page 4
5 .
6 .Ele tri al
Page 5
7 .Settings
Page 7
Pumps In orporating the
VS, Variable Speed Control
8 .Qui k
Referen e
Page 9
Installation
Requirements
Page 5