Centrifugal pump Stratos GIGA-D series

for cooling waterglycol waterbrushless DC

Overview
The Wilo-Stratos GIGA is an innovative high-efficiency in-line pump series for heating, air conditioning and cooling applications where large water volumes must be pumped to high delivery heights. Maximum energy efficiency is achieved with EC motors (efficiency class IE5). The twin-head pump version offers increased operational reliability thanks to a standby pump.

Key features

• Innovative high-efficiency pump for maximum overall efficiency levels
• High-efficiency EC motor with efficiency class IE5 according to IEC 60034-30-2
• Highest possible operational reliability thanks to standby pump (twin-head pump)
• Optional plug-in IF modules for building automation interfaces (Modbus, BACnet, CAN, PLR, LON)

Design / Application / Equipment
Design
High-efficiency in-line twin-head pump with EC motor and electronic power adjustment in glanded pump construction. Single-stage low-pressure centrifugal pump with flange connection and mechanical seal.

Application
Pumping of heating water (acc. to VDI 2035), chilled water and water/glycol mixtures without abrasive substances in heating, chilled water and cooling systems.

Equipment / function

• Operating modes
  • Δp-c for constant differential pressure
  • Δp-v for variable differential pressure
  • PID-Control
  • Constant speed (n = constant)
• Manual operation level
  • Green button and display
• Manual functions
  • Differential pressure setpoint setting
  • Setting the speed (manual control mode)
  • Setting the operating mode
  • Setting the pump ON/OFF
  • Configuration of all operating parameters
  • Fault acknowledgement
• External control functions
  • 1x “Overriding Off” control input
  • 1x “External pump cycling” control input (effective only in twin-head pump operation)
  • 1x Analogue input 0–10 V, 2–10 V, 0–20 mA, 4–20 mA for constant speed (DDC) and remote setpoint adjustment
  • 1x Analogue input 0–10 V, 2–10 V, 0–20 mA, 4–20 mA for actual value signal from pressure sensor
• Signal and display functions
  • Collective fault signal SSM
  • Collective run signal SBM
• Data exchange
  • Infrared interface for wireless data exchange with IR-Monitor/IR-Stick
  • Plug-in position for Wilo IF-Modules (Modbus, BACnet, CAN, PLR, LON) for connection to building automation
• Safety functions
  • Full motor protection with integrated trip electronics
  • Access disable
• Dual-pump management (twin-head pump or 2 × single pumps)
  • Main/standby operation (automatic fault-actuated switchover)
  • Pump cycling main/standby operation after 24 hours
  • Parallel operation
  • Parallel operation with efficiency-optimised peak-load activation and deactivation

Type key (table)
Example | Wilo-Stratos GIGA-D 50/7-55/11-xx
Stratos GIGA | High-efficiency pump
-D | In-line twin-head pump
50 | Nominal flange diameter DN
7-55 | Nominal delivery head range in [m]
11 | Orientation value for rated power P2 in [kW]
-xx | Version (e.g. R1 = without differential pressure sensor)

Technical data

• Permitted fluid temperature range: -20 °C to +140 °C
• Mains connection examples: 3~480 V ±10 %, 50/60 Hz; 3~440 V ±10 %, 50/60 Hz; 3~400 V ±10 %, 50/60 Hz; 3~380 V -5 % +10 %, 50/60 Hz
• Compliance with EMC without additional measures: Emission & Immunity according to EN 61800-3:2018 (residential/industrial)
• IP rating: IP55
• Nominal diameter: DN 40 to DN 200
• 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 versions: Bronze CuSn 10 or Stainless steel 1.4408 depending on type)
• Shaft: 1.4122 or 1.4057
• Mechanical seal: AQEGG; other mechanical seals available on request

Scope of delivery

• Pump
• Installation and operating instructions

Options

• …-L1 variant with bronze impeller (additional charge)
• …-L4 variant with stainless steel impeller (additional charge)
• Variant …-R1 without differential pressure sensor
• …-S1 variant with special mechanical seal

Accessories

• Mounting bracket with fixation material for installation on a base
• Blind flanges for twin-head pump housing
• Installation aid for mechanical seal
• IR-Stick
• IF module PLR (PLR/interface converter)
• IF module LON (LONWORKS)
• IF module BACnet
• IF module Modbus
• IF module CAN
• Control systems: VR-HVAC, CCe-HVAC, SCe-HVAC
• Differential pressure sensor (DDG)

Caractéristiques / spécifications techniques

• Series name: Stratos GIGA-D
• Motor efficiency class: IE5 (EC motor)
• Nominal diameter range: DN 40 … DN 200
• Max. operating pressure: 16 bar (≤ +120 °C) / 13 bar (≤ +140 °C)
• Permitted fluid temperature: -20 °C to +140 °C
• IP rating: IP55
• Mains supply examples: 3~480 V ±10 %, 3~440 V ±10 %, 3~400 V ±10 %, 3~380 V -5 % +10 % (50/60 Hz)
• Available rated power orientation examples: from approx. 0.7 kW up to >10 kW depending on model
• Variants: different impeller materials, special mechanical seals, R1 (without differential pressure sensor), S1 (special mechanical seal)