US Installation and operating instructions
Shipment Inspection ............... 2
Pre-Installation Checklist ........ 2
Installation ..............................3
Electrical ................................. 4
Start-Up ..................................5
Operation ................................ 6
Failure to Operate...................6
Warranty .................................7
CONTENTS
GRUNDFOS INSTRUCTIONS
UP Series circulators
Shipment Inspection
Examine the components carefully to make sure no
damage has occurred to the pump during shipment. Care
should be taken to ensure the pump is NOT dropped or
mishandled; dropping will damage the pump.
Pre-Installation Checklist
Before beginning installation procedures, the following checks
should be made. They are all important for proper installation
of the circulator pump.
1. Uses: Model UP(S)15, 26, 43 and 50 series pumps
are generally designed to circulate water from 32 deg F to
230 deg F up to a maximum pressure of 150 psi. Some
models have temperature limitations which are shown
in Table 2A below. If required, a 50% by volume solution
of ethylene or propylene glycol and water can be used,
however, a decrease in pump performance may result
due to an increase in the viscosity of the solution. Check
with manufacturer for information regarding suitability of
pumping other uids.
Closed Systems: Model UP(S)15, 26, 43 and 50 series
pumps with cast iron pump housings are designed to pump
water compatible with their cast iron construction. They
are recommended for use in closed hydronic systems.
(i.e. airless, non-potable water).
Open Systems: Model UP(S)15, 26, 43 and 50 series
pumps with stainless steel or bronze pump housings are
designed to pump water compatible with their construction
and can be used in both open and closed systems.
2. Maximum Water Temperature: The maximum
allowable water temperature is determined by the ambient
or surrounding air temperature as shown in Table 2A.
Table 2A – Maximum Water Temperature
Ambient (°F) 104 120 140 160 175
Water All UP* (°F) 230 220 210 190 175
UPS15-35 165 140 - - -
UP15-100F (°F)
205 195 185 175 -
UP26-120U (°F)
205 195 185 175 -
UP26-116 (°F)
150 140 - - -
*Exceptions below:
Installation
2
3. Inlet Pressure Requirements
The amount of pressure required at the inlet of the pump is a
function of the temperature of the water as shown in Table 2B.
In a pressurized system, the required inlet pressure is the
minimum allowable system pressure.
In a system open to the atmosphere, the required inlet
pressure is the minimum distance the pump must be
located below the lowest possible water level of the water
source (tank, pool, etc.).
Installation
Position of terminal box: Proper installation of the pump
will have the terminal box located to one side of the pump
or the other, with the conduit entry down. See Figure 3A.
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:
1. Remove the four (4) Allen screws (4 or 5mm
wrench) while supporting the stator (motor).
2. Carefully separate the stator from the pump
chamber and rotate it to the correct terminal box
orientation.
3. Replace the Allen screws and tighten diagonally and
evenly (7 ft.-lb. torque).
4. Check that the impeller turns freely. If the impeller
does not turn easily, repeat the disassembly/
reassembly process.
Fluid Temp 230° (110°C) 190° (88°C) 140° (60°C)
Feet of Water 36 ft. (1.10m)9 ft (2.8m) 3 ft (0.9m)
Inlet Pressure 15.6 psi4.0 psi1.3 psi
Table 2B - Minimum Required Inlet Pressure
Figure 3A
Recommended Terminal Box Orientation
3
Pump Mounting: For Indoor Use
Arrows on the side or bottom of the pump chamber indicate
direction of ow through the pump. GRUNDFOS circulators can
be installed in both vertical and horizontal lines. 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 horizontal plane. See Figure 3B.
It is recommend that isolation valves be installed on each side
of the pump. If possible, do not install elbows, branch tees, and
similar ttings just before or after the pump. Provide support to
the pump or adjacent plumbing to reduce thermal and mechanical
stress on the pump.
Installation Requirements
1. Thoroughly clean and flush the system prior to pump
installation.
2. Do not install the pump at the lowest point of the system where
dirt and sediment naturally collect.
3. Install an air vent at the high point(s) of the system to remove
accumulated air.
4. Ensure that water does not enter the terminal box during the
installation process.
5. (Open System) Install the pump in the supply line;
the suction side of the pump should be flooded with
water. Ensure that the static head requirement from
Table 2B is achieved.
6. (Closed System) Install a safety relief valve to
protect against temperature and pressure build-up.
7. If there are excessive suspended particles in
the water, it is recommended that a strainer and/or lter
be installed and cleaned regularly.
8. DO NOT START THE PUMP UNTIL THE SYSTEM HAS BEEN
FILLED.
CHECK VALVE REMOVAL:
1. Use needle nose pliers to remove check valve from pump
housing. 2. Check to make sure no part of the valve remains
in the pump housing. 3. Apply enclosed round "Check Valve
Removed" label over the Check mark symbol located on the
name plate of the pump.
4
Figure 3B
Acceptable
Unacceptable
5
Electrical
All electrical work should be performed by a qualified
electrician in accordance with the latest edition of the National
Electrical Code, local codes and regulations.
Warning: The safe operation of this pump requires that it
be grounded in accordance with the National Electrical Code and
local governing codes or regulations. The ground wires should
be copper conductor of at least the size of the circuit conductor
supplying power to the pump. Minimum ground wire size is 14
AWG. Connect the ground wire to the grounding point in the
terminal box and then to an acceptable ground. Do not ground
to a gas supply line.
The proper operating voltage and other electrical information
can be found on the nameplate attached to the top of the motor.
Depending on pump model, the motor has either built-in, automatic
resetting thermal protection or is impedance protected and in
either case does not require additional external protection. The
temperature of the windings will never exceed allowable limits,
even if the rotor is locked.
Wire sizes should be based on the ampacity (current carrying
properties of a conductor) as required by the latest edition of
the National Electrical Code or local regulations. Both the power
and grounding wires must be suitable for at least 194°F (90°C).
For all 115V and 230V models: Connect the white/white electrical
leads from the circulator to the incoming power leads with wire
nuts or other approved connectors. Attach incoming grounding
wire to either of the green grounding screws.
Ground
White
Green
Grounding
Screws
Capacitor
Wiring diagram for all 115V and 230V single speed pumps.
Figure 1
1
Green Ground
Neutral
Line
CAPACITOR
2345678
6
Start-Up
Do not use the pump to vent the system. Do not start the
pump before lling the system. Never operate the pump dry.
Operation
GRUNDFOS domestic circulating pumps, installed properly and
sized for correct performance, will operate quietly and efciently
and provide years of service. Under no circumstances should
the pump be operated without water circulation or without the
minimum required inlet pressure for prolonged periods of time. This
could result in motor and pump damage.
UPS model pumps are
multispeed, and the speed can be changed by a speed selector
switch located on the front of the terminal box. UP models are
single speed.
Failure to Operate
When UPS 15-42 and UPS 26/43 pumps are rst started, the shaft
may rotate slowly until water has fully penetrated the bearings.
If the pump does not run, the shaft can be rotated manually. To
accomplish this, switch off the electrical supply, and close the
isolation valves on each side of the pump. Remove the indicator
plug in the middle of the nameplate. Insert a small at blade
screwdriver into the end of the shaft, and gently turn until the shaft
moves freely. Replace and tighten the plug. Open the isolation
valves and wait 2 to 3 minutes for the system pressure to equalize
before starting the pump.
NOTE: After a long shut down multi-speed pumps should be
started on speed 3 and then adjusted to the regular setting. The
UPS 15-42 has automatic function to assist in restart.
*IMPORTANT NOTE*: For gure 1, the cap plug has not been
installed. This pump is supplied with two wiring ports. To
ensure safe operation of your installation, the enclosed cap plug
MUST be inserted into the unused port.
*UP(S) 15 capacitor wire position 4 & 8 *UP(S) 26/43/50
capacitor wire position 2 & 4
Wiring diagram for
115V and 230V
multi-speed pumps
Figure 2
Green Ground
Neutral
Line
Wire the hot lead to terminal "L," neutral wire to terminal "N," and
ground to the grounding terminal. For 230 volt pumps, the two hot
leads should be to "L" and "N" and the ground to the grounding
terminal.
Limited Warranty
7
Limited Warranty
UPS15, 26, 43 circulator pumps manufactured by GRUNDFOS
PUMPS CORPORATION (GRUNDFOS) are warranted to the original
user only to be free of defects in material and workmanship for a period
of 36 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 UPS15, 26, 43 or UP15-42F circulator pump.
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.
All other UP and UPS small circulators manufactured by GRUNDFOS
PUMPS CORPORATION (GRUNDFOS) are warranted to the original
user only to be free of defects in material and workmanship for a period
of 24 months from date of installation, but not more than 30 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 alteration 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 specic legal rights and you may also have other rights
which vary from jurisdiction to jurisdiction.
Grundfos Pumps Corporation
17100 W. 118th Terrace
Olathe, Kansas 66061
Telephone: (913) 227-3400
Fax: (913) 227-3500
Grundfos Canada, Inc.
2941 Brighton Rd.
Oakville, Ontario L6H 6C9
Telephone: (905) 829-9533
Fax: (905) 829-9512
Bombas Grundfos de Mexico,
S.A. de C.V.
Boulevard TLC #15,
Parque Industrial Stiva Aeropuerto
C.P. 66600 Apodaca, N.L. Mexico
Telephone: 52-81-8144-4000
Fax: 52-81-8144-4010
L-UP-TL-053 06.11
Repl. 06.07
PRINTED IN USA
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