Centrifugal pump TOP-S series

waterelectricstationary

Overview

• No mechanical seal
• Quiet, low-maintenance wet-rotor circulator
• Two-speed operation on all voltages
• Automatically vented
• Cataphoretic coating for corrosion protection
• Sturdy cast-aluminum electrical box
• Short flange-to-flange dimension

Design
Single-stage wet-rotor pump with flanged or screwed connection. Two pre-selectable speed stages allow manual capacity adjustment. Compact hydraulic length and cataphoretic (KTL) coated pump housing for extended service life in corrosive environments.

Application

• All types of hot water heating systems
• Closed cooling circuits
• Air conditioning systems
• Industrial circulation
• Solar and geothermal systems
• Water/glycol mixtures up to 50%
• Max. Flow: 290 GPM
• Max. Head: 70 feet

Equipment / Function

• Two pre-selectable speeds for capacity adjustment
• Pump flanges: 2-bolt oval 1 ¼" and 1 ½" – 4-bolt 2" pump flange – 4-bolt 3" 125# raised face ANSI
• Cataphoretic coated pump housing
• Thermal overload motor protection; power-on and reverse-rotation indicator lights (three-phase)
• Cable entry on both sides for simplified installation

Type key
TOP-S description examples and meaning:

TOP-S 2x25 → TOP = Circulator, -S = Standard pump, 2 = pipe connection in inches (example), 25 = setpoint height 25 ft

Product variants (selection table)
Number of results: 60

Table (columns)
Product description | Pump connection | Mains connection | Pieces per pallet | Maximum operating pressure | Article number
TOP-S 1.5X20 145PSI 1~115V60HZ (H) | 1.50" | 1~115 V, 60 Hz | 21 | 145 psi | 2067547
TOP-S 1.5X20 145PSI 1~230V60HZ (H) | 1.50" | 1~230 V, 60 Hz | 21 | 145 psi | 2067548
TOP-S 1.5X20 145PSI 3~230V60HZ (H) | 1.50" | 3~230 V, 60 Hz | 21 | 145 psi | 2067549
TOP-S 1.5X30 145PSI 1~115V60HZ (H) | 1.50" | 1~115 V, 60 Hz | 21 | 145 psi | 2067550
TOP-S 1.5X30 145PSI 1~230V60HZ (H) | 1.50" | 1~230 V, 60 Hz | 21 | 145 psi | 2067551
TOP-S 1.5X30 145PSI 3~230V60HZ (H) | 1.50" | 3~230 V, 60 Hz | 21 | 145 psi | 2067552

Scope of delivery

• Pump
• Flange gaskets
• Installation and operating instructions

Options

• For 3~400 V pumps: motor with internal protection or integrated motor protection; collective fault lamp and contact for collective fault signal (model-dependent); rotation-direction indicator
• For 1~230 V pumps: motor with internal protection or full motor protection in conjunction with a Wilo relay

Materials

• Pump housing: cataphoretic coated cast iron or bronze
• Impeller: engineered composite (PP - 50% glass fiber)
• Shaft: stainless steel
• Bearing: metal-impregnated carbon

Technical specifications

• Power supply: 1~115/230 V, 60 Hz / 3~208/230/460 and 575 V, 60 Hz (depending on type)
• Fluid temperature range: -14 °F to +248 °F (-10 °C to +120 °C)
• Max. Flow: up to 290 GPM
• Max. Head: up to 70 ft
• Max. operating pressure: 145 PSI (10 bar)
• Protection class / insulation: H (model-dependent)
• Two pre-selectable speed stages
• Cataphoretic coating for corrosion protection