Brochure

GENERAL DATA GRUNDFOS SERIES UP
14
Installation
The pump must always be installed with horizontal
motor shaft.
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.
UP can be installed in both vertical and horizontal
lines.
UP pumps are intended for indoor use only.
Motor
UP pumps
The motor is a 2 pole asynchronous squirrel-cage
PSC (permanent split capacitor) motor with UL,
CUL, and CSA approvals.
UP pumps are available in Single-phase 115V &
230V versions with one, or three speeds.
The terminal box is easily accessible and has
functional cable connecting leads or terminals.
Insulation class: F.
The motor incorporates thermal overload or
impedance protection. Therefore, no external motor
protection is required.
UPS model pumps are multi speed and the speed
can be changed by a speed selector switch located
on the front of the terminal box.
UP models are single speed.
UP models with VS or MR suffixes are variable
speed with integrated control.
Motor Horsepowers range from 1/25 thru 1/6 and
power consumption from 25 to 385 watts.
Pumped liquids
Depending on type, Grundfos circulator pumps are
designed for the following liquids:
• Potable Water
• Non-Potable Water
• Water/Glycol Mixtures.
• Chilled water.
• Domestic Hot Water
• Softened Water
If the circulator pump is used for a glycol mixture
with a higher viscosity than water, the hydraulic
performance of the pump will be reduced.
Example: 50% glycol at 68°F (20°C) means a
viscosity of approx. 10 cSt and a reduction of pump
performance by approx. 15%.
When selecting a pump, the viscosity of the
pumped liquid must be taken into consideration.
Ambient and liquid temperatures
The maximum allowable water temperature is
determined by the ambient or surrounding air
temperature as shown in Table 2A.
The above table refers to all standard product without
timer/control options and or other special features.
The ambient temperature for standard pumps with a
permissible liquid temperature from +2°C to +110°C
should always be lower than the liquid temperature,
as otherwise condensation may form in the stator
housing.
Temperature requirements for pumps with
timer/control and or other special features may be
found on their technical data page.
For all Domestic Hot water systems it is
recommended to keep the operating temp. as low as
possible (e.g. 140°F (60°C)) to avoid calcium
precipitation.
Maximum system pressure
ALL UP PUMPS: 145 PSI (10bar)
Inlet pressure requirements
The amount of pressure required at the inlet of a
pump is a function of the temperature of the water
as shown in Table 2B:
Ambient (°F) 104 120 140 160 175
Water all cast iron* (°F) 230 220 210 190 175
Water all brz and ss 230 210 190 175
*exceptions below
UP/UPS15-FC
& UP43-FC (°F) 230 190 180 170 -
UP15BUC5&BUC7 (°F) 230 190 180 170 -
UP15-100F (°F) 205 195 185 175 -
UP26-120U (°F) 205 195 185 175 -
UP26-116 (°F) 150 140 - - -
Table 2A - Maximum Water Temperature
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 psi 4.0 psi 1.3 psi
Table 2B - Minimum Required Inlet Pressure
UP Series Product Guide 5-06.qxd 5/11/2006 1:18 PM Page 14