Installation Guide

ManualsBrandsGrundfos ManualsPumpsGrundfos Bronze Recirculation Pump with 230 Degree Max Temperature Range 5" Long 1 Phase Motor Sweat Valve Connection and a Corrosion-Resistant Impeller

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.

Shipment Inspection

Before beginning installation procedures, the

following checks should be made. They are all

important for proper installation of the circulator

pump.

1. Uses:

Model UPS 15, and UP15, 25, 26 and 43 series pumps

are designed to circulate water from 50°F to 230°F up to

a maximum pressure of 145 psi. 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 fluids.

Closed Systems: UPS 15 and UP 26 and 43 series

pumps with cast iron volutes are recommend for closed

hydronic systems (i.e. airless, non-potable water).

Open Systems: UP 15, 25, 26 and 43 series pumps

with stainless steel or bronze volutes 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 (°F) 230 220 210 190 175

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.

Pre-Installation

Checklist

Table 2B – Inlet Pressure Requirements

Water (°F) 190 165 140

Required Inlet Pressure (ft.) 5 4.5 3

(psi) 2.2 1.9 1.3

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 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.

NOTE: UPS15-42 does not require manual turning of

shaft.

Pump Mounting: For Indoor Use

Arrows on the side or bottom of the pump chamber indicate

direction of flow 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 fittings 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 filter be

installed and cleaned regularly.

8. DO NOT START THE PUMP UNTIL THE SYSTEM

HAS BEEN FILLED.

Electrical

Wiring diagram for all 115V and 230V models

(except UPS15-42F).

Figure 3A

Recommended Terminal Box Orientation

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/yellow 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.

Figure 3B

Acceptable Unacceptable

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Summary of content (2 pages)

PAGE 1
. 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. 2. 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.
PAGE 2
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. 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.