Grundfos Selectric Brochure
Grundfos Selectric Brochure
Grundfos Selectric Brochure
UPS 15-50 Selectric and UPS 15-60 Super Selectric circulators are designed to cater for the majority of domestic wet central heating systems up to 35kW. The UPS 15-50 Selectric covers virtually all standard systems whilst the higher head UPS 15-60 can accommodate larger domestic systems and higher resistance circuits (eg microbore). The pumps incorporate a new energy saving three speed motor for pump to system matching and consequent reduction of hydraulic noise. The very highest quality pump components provide long life and maximum resistance to corrosion. Standard port to port dimensions make these pumps interchangeable when replacing the vast majority of old pumps.
FEATURES AND BENEFITS Cater for all domestic systems up to 35kW Compact size and standard port to port dimensions for easy fitting and for interchange with old pumps Three speed motor for energy efficiency and precise system matching Energy labelled products - B rated UPS 15-50, C rated UPS 15-60
p [kPa] 40 30 20 10 0 H [m] 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0
B1 75
B2 51
H1 28
H2 102
II
III
Q [m /h] Q [l/s]
Dimensions L1
130
Weight kg
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 0.0 p [kPa] 60 50 40 30 20 10 0 H [m] 6 5 4 3 2 1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
B1
75
B2
51
H1
32
H2
102
net
2.5
gross 2.7
PUMP SPEED SPEED INPUT SET RPM PI (W) AT: I 1700 2100 2300 1450 1850 2100 35 45 50 50 60 70
FLC (A)
LOCKED ROTOR CURRENT (A) 0.20 0.25 0.30 0.25 0.30 0.40
II
III
Q [m /h] Q [l/s]
II III I II III
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
MATERIAL SPECIFICATION
Pump Housing Stator Housing Rotor Can Rotor Cladding Air Vent Screw Bearing Plate Bearing Shaft Stopring Impeller Neckring Terminal Box Gaskets Cast Iron Aluminium Stainless Steel Stainless Steel Stainless Steel Stainless Steel Ceramic/Carbon Ceramic Composite Composite Stainless Steel Composite EPDM Rubber
Where pumps can only be installed in horizontal pipework, it is imperative that the pump shaft is horizontal, or slightly higher at the vent plug end. The shaft must not fall below the horizontal plane, even by a few degrees, as this causes premature wear of the top bearing and shaft. Pumps should not be installed with the shaft in a vertical plane, as this may lead to dry running of the top bearing, noise and possible pump failure. To avoid cavitation noise and risk of damage to the bearings the minimum pump inlet pressure should be 1.4m at 82C (water temperature).
ENERGy LABELLING
Grundfos circlulators are provided with an energy label which indicates the energy saving potential. The energy classification scheme has seven levels i.e. from A to G. Level A is the best. The energy label can be used to compare pumps of the same type and size. ALPHA Pro and ALPHA+ are alternative circulators UPS 15-50 with A and B ratings respectively and have UPS 15-60 both fixed and variable speed adjustment.
ByPASS ARRANGEMENTS
PART L requires an Automatic Bypass Valve (ABV) to be fitted where the boiler manufacturer stipulates a minimum flow rate. Please ensure the ABV is correctly set for either fixed or variable speed operation, in accordance with manufacturers instructions.
APPLICATIONS
The pumps may be used in heating systems containing glycol based anti-freeze with corrosion inhibitors up to a maximum of 50% solution but with a 15% performance reduction. However, if the liquid temperature remains lower than the ambient temperature during operation, condensation may form in the stator housing and, may short circuit the motor windings.
FLOW ADJUSTMENT
UPS15-50 -Selectric and UPS15-60 Super Selectric have a three speed selector switch on the terminal box. Please refer to performance curve to select duty required.
GB/UPS/DBS/1005