Wilo-Stratos-ZD

Design

Glandless circulation double pump with flange connection, EC motor and automatic power adjustment

Application

Domestic hot water circulation systems of all kinds, hot-water heating systems of all kinds, air conditioning, closed cooling circuits, industrial circulating systems

Type key

Technical data

• Energy efficiency index (EEI) ≤ 0.27

• Permissible temperature range
  • Drinking water up to 3.57 mmol/l (20 °dH), 0 °C to +80 °C
  • Heating water ‐10 °C to +110 °C
• Mains connection: 1~230 V, 50/60 Hz, 3~230 V, 50/60 Hz
• Protection class IP X4D
• Flange connection DN 32 to DN 40
• Max. operating pressure, standard version: 6/10 bar (special version: 16 bar)

Equipment/function

Operating modes

• Manual control mode (n=constant)
• Δp-c for constant differential pressure
• Δp-v for variable differential pressure
• Δp-T for temperature-controlled differential pressure (programmable via IR-Module, Wilo-IR-Stick, IR-Monitor, Modbus, BACnet, LON or CAN)
• Q limit for limiting the maximum volume flow (setting only via IR-stick)

Manual functions

• Setting the operating mode
• Differential pressure setpoint setting
• Setting automatic setback operation
• Setting the pump ON/OFF
• Setting the speed (manual control mode)

Automatic functions

• Infinitely variable power adjustment according to the operating mode
• Automatic setback operation
• Deblocking function
• Soft start
• Full motor protection with integrated trip electronics

External control functions

• "Overriding Off" control input (possible with Stratos IF-Modules)
• "Overriding Min" control input (possible with Stratos IF-Modules)
• "Analogue In 0 ‐ 10 V" control input (remote speed adjustment) (possible with Stratos IF-Modules)
• "Analogue In 0 ‐ 10 V" control input (remote setpoint adjustment) (possible with Stratos IF-Modules)

Signal and display functions

• Individual / collective fault signal (potential-free NC contact) (programmable with the IR-Monitor)
• Collective fault signal (potential-free NC contact)
• Individual run signal (potential-free NO contact) (possible with Stratos IF-Modules)
• Fault signal light
• LCD display for indication of pump data and fault codes

Data exchange

• Infrared interface for wireless data exchange with IR-Module/Wilo-IR-Stick/IR-Monitor
• Modbus RTU serial digital interface for connection to building automation BA via RS485 BUS system (possible with Stratos IF-Modules)
• BACnet serial digital interface MS/TP slave for connection to building automation BA via RS485 BUS system (possible with Stratos IF-Modules)
• CAN serial digital interface for connection to building automation BA via IF-Modules BUS system (possible with Stratos IF-Modules)
• LON serial digital interface for connection to a LONWorks network (possible with Stratos IF-Modules)
• PLR serial digital interface for connection to BA via Wilo interface converter or company-specific coupling modules (possible with Stratos IF-Modules)

Dual pump management (double pump or 2 x single pumps)

• Main/standby operation (automatic fault-actuated switchover/time-dependent pump cycling): various combinations with Stratos IF-Modules (accessories) possible
• Parallel operation (efficiency-optimised peak load activation and deactivation): various combinations with Stratos IF-Modules (accessories) possible

Equipment

• Flange versions:
  • Standard version for DN 32/DN 40 pumps: PN 6/10 combination flange (PN 16 flange according to EN 1092-2) for PN 6 and PN 16 counter flanges,
  • Special version for pumps DN 32 / DN 40: PN 16 flange (according to EN 1092-2) for PN 16 counter flange,
• Double switchover valve in pump housing
• Plug-in position for optional extension with Wilo-IF‐Modules

Materials

• Pump housing: Grey cast iron
• Thermal insulation: Polypropylene
• Shaft: stainless steel
• Bearing: Carbon, synthetic resin impregnated
• Impeller: Plastic

Scope of delivery

• Pump
• Washers for flange screws (with nominal connection diameter DN 32 / DN 40)
• Installation and operating instructions

Options

• Special versions for operating pressure PN 16 (at additional charge)

Accessories

• Blind flanges
• IR-Module
• IR-Stick
• IR-Monitor
• Stratos IF-Modules: Modbus, BACnet, CAN, LON, PLR, DP, Ext. Off, Ext. Min., SBM, Ext. Off/SBM

Special versions

Observe local information and instructions for the drinking water directive!