Achieving maximum power with maximum energy efficiency.

For buildings requiring high delivery heads and high flow rates, the Wilo-Stratos GIGA B high-efficiency pump is the ideal choice for heating, air conditioning, and cooling systems.

Features/Product Advantages

Innovative high-efficiency pump achieving maximum overall efficiency; main dimensions comply with EN 733 standards
High-efficiency EC motor (IE5 efficiency class) compliant with IEC 60034-30-2 standards
Easy installation thanks to integrated pump feet and optional shims
Optional interfaces available for bus communication via plug-in IF modules

Construction

High-efficiency close-coupled pump with an IE5 motor and electronic power control; glanded pump design. Single-stage low-pressure centrifugal pump with flanged connections and mechanical seal.

Applications

Pumping of heating water (in accordance with VDI 2035), cold water, and water-glycol mixtures in heating, cold water, and cooling systems (fluids must be free of abrasive substances).

Equipment/Functions

Operating modes

Δp-c (constant differential pressure)
Δp-v (variable differential pressure)
PID control
Constant speed (n = constant)

Manual control level

Green button and display

Manual functions

Differential pressure setpoint adjustment
Speed ​​adjustment (manual control mode)
Operating mode selection
Pump ON/OFF
Configuration of all operating parameters
Fault acknowledgement

External control functions

1× "Overriding Off" control input
1× "External pump cycling" control input (active only in twin-head pump operation)
1× Analog input (0–10 V, 2–10 V, 0–20 mA, 4–20 mA) for constant speed (DDC) and remote setpoint adjustment
1× Analog input (0–10 V, 2–10 V, 0–20 mA, 4–20 mA) for actual value signal from pressure sensor

Reporting and display functions

Collective fault signal (SSM)
Collective run signal (SBM)

Data exchange

Infrared interface for wireless data exchange with IR-Monitor/IR-Stick
Slot for Wilo IF-Module (Modbus, BACnet, CAN, PLR, LON) for connection to building automation systems

Safety functions

Comprehensive motor protection with integrated trip electronics
Access lock

Twin-head pump management (2× single pumps, Y-piece application only)

Main/standby operation (automatic fault-actuated switchover)
Main/standby operation with pump cycling after 24 hours
Parallel operation

Type key

Technical Data

Permissible fluid temperature range: -20 °C to +140 °C
The mechanical seal is suitable for pumping water at temperatures up to Tmax = +140 °C. At temperatures T ≤ +40 °C, pumping glycol mixtures with a volumetric content of 20% to 40% is permitted. If the glycol content in the water-glycol mixture exceeds 40% (up to a maximum of 50%), the medium temperature exceeds +40 °C (up to a maximum of +120 °C), or if media other than water are used, a different mechanical seal is required. When using water-glycol mixtures, the S1 model equipped with the appropriate mechanical seal is generally recommended. Power connection:
3~440 V ±10%, 50/60 Hz
3~400 V ±10%, 50/60 Hz
3~380 V -5% +10%, 50/60 Hz

EMC requirements met without additional measures:

Interference emission for residential areas compliant with EN 61800-3:2018
Interference immunity for industrial areas compliant with EN 61800-3:2018
Protection class IP55
Max. operating pressure: 16 bar (up to +120 °C), 13 bar (up to +140 °C)

Materials

Pump housing and lantern: EN-GJL-250
Impeller: EN-GJL-200
Special version: CuSn 10 bronze (depending on model)
Special version: 1.4408 stainless steel (depending on model)
Shaft: 1.4122 or 1.4057
Mechanical seal: AQEGG; other mechanical seals available upon request

Scope of delivery

Pump
Installation and operating instructions

Options

Model ...-L1 with bronze impeller (surcharge)
Model ...-L4 with stainless steel impeller (surcharge)
Model ...-R1 without differential pressure sensor
Model ...-S1 with special mechanical seal

Accessories

1 bracket with mounting hardware for base installation
Installation aids for mechanical seal
IR-Stick
IF-Module PLR ​​for connection to PLR/interface converter
IF-Module LON for connection to LONWORKS network
IF-Module BACnet
IF-Module Modbus
IF-Module CAN
VR-HVAC control system
CCe-HVAC control system
SCe-HVAC control system
Differential pressure sensor (DDG)