Honeywell Z74S-AN: Reverse Rinsing Actuator
Reverse rinsing actuator with bayonet connection for fully automatic filter cleaning.
Application
The Z74S-AN automatic reverse rinsing actuator provides fully automatic cleaning for Honeywell filters F74CS, FN74CS and filter combinations FK74CS, FKN74CS. A bayonet connection enables fitting the Z74S-AN without tools. The reverse rinsing interval can be set to 8 different intervals.
Special Features
- Bayonet connection enables fitting without tools
- 8 reverse rinsing intervals
- Main voltage or battery operation
- Manufactured with integral electrical suppression
Technical Data
For fully automatic reverse rinsing of Honeywell filters F74CS, FN74CS and filter combinations FK74CS, FKN74CS.
| Media | Drinking water |
| Operating temperatures | Max. water temperature: 30 °C |
| Specifications | |
| Ambient conditions: | 5-80% non-condensing, 0-40 °C |
| Reverse rinsing interval adjustable to: | 1 hour/1 day/6 days/ 15 days/30 days/45 days/ 2 months/3 months |
| Open/closing time: | 20 s |
| Battery operation: | 4.5 VDC +5/-20% (3x battery 1.5 V DURACELL MN1500 AA) |
| Power supply unit: | ADAPTER 230 V/50 Hz 6 V/500 mA |
| Battery display: | LED - flashes when voltage is under 3.6 V |
| Protection type: | IP42 |
Construction Overview
Diagram shows the Z74S-AN actuator with a bayonet connection. Key features indicated include the manual override knob and the connection points. The device is labeled with model number, voltage, cycle time, IP rating, and CE mark.
Method of Operation
After the set time has expired, the Z74S-AN opens the ball valve. In the filter, a differential pressure is generated by this opening procedure, which in turn starts the reverse rinsing mechanism. At the end of the reverse rinsing interval, the ball valve closes again. An additional safety function prevents the ball valve from being opened if the battery voltage is too low. This ensures that unwanted loss of water is avoided. The end of the battery service life is indicated by the flashing of the LEDs.
Reverse Rinsing
| Filter size | Discharge connection | Reverse rinsing volume* |
| 1/2" + 3/4" | DN50 | 10 |
| 1" + 1 1/4" | DN70 | 12 |
*at 4 bar inlet pressure and 20 seconds reverse rinsing duration
Installation Guidelines
Setup requirements
- The installation site has to be frost-proof and the protection of the device from chemicals, paints, detergents, solvents and their vapours and environmental influences must be guaranteed.
- In case the mains supply fails during the backwash the batteries (if they are fitted) provide the energy for closing the backwash ball valve. The battery charge should be checked regularly. At the latest after two years exchange the batteries with new ones.
- In order to avoid flooding, it is recommended to arrange a permanent, professionally dimensioned wastewater connection.
Transportation and Storage
Keep parts in their original packaging and unpack them shortly before use.
The following parameters apply during transportation and storage:
| Parameter | Value |
| Environment: | clean, dry and dust free |
| Min. ambient temperature: | 0 °C |
| Max. ambient temperature: | 40 °C |
| Min. ambient relative humidity: | 5%* |
| Max. ambient relative humidity: | 80% * |
*non condensing
Dimensions
Diagram shows the physical dimensions of the Z74S-AN actuator in millimeters. Key dimensions include height (120mm), width (72mm), and depth, with specific callouts for connection points and overall size.
Ordering Information
The following tables contain all the information you need to make an order of an item of your choice. When ordering, please always state the type, the ordering or the part number.
| Connection type: | with bayonet connection | Z74S-AN |
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Contact Information
Honeywell GmbH
Hardhofweg
74821 MOSBACH
GERMANY
Phone: (49) 6261 810
Fax: (49) 6261 81309
http://ecc.emea.honeywell.com
Environmental and Combustion Controls
Division of Honeywell Technologies Sàrl, Z.A.
La Pièce 16, 1180 Rolle, Switzerland
by its Authorised Representative Honeywell GmbH
