Viessmann
Viessmann Servo Drive 3-Way Valve 7828748
Viessmann 7828748 servo drive for the 3-way valve on Vitodens 100-W gas boilers, a 24 Vdc motorised actuator.
At a glance
- Part type: Servo drive motor
- Also known as 2320472
£132.80
£110.67 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Viessmann 7828748 is a servo drive for the 3-way valve fitted to Viessmann gas boilers. It is the motorised actuator that drives the valve spindle, moving the valve between the heating circuit and the domestic hot water circuit on demand. It belongs to the Vitodens 100-W appliance family and is supplied as a replacement actuator unit.
Signs this part needs replacing
- Domestic hot water runs cold while the heating circuit continues to work, or the reverse.
- The boiler locks out or reports a valve or actuator related fault during a hot water draw-off.
- The actuator head hums or buzzes but the valve spindle does not move.
- The valve stays in one position regardless of demand, so the appliance cannot switch between heating and hot water.
- Visible damage, scorching or moisture around the actuator body or its plug connection.
Before you order
- Check the GC number and serial number on the appliance data badge against the compatibility list to confirm the correct variant.
- Confirm the number on the existing actuator; 2320472 is listed as an alternative reference for this part.
Mechanical
| Part type | Servo drive motor |
|---|
Compliance
| Manufacturer part number (MPN) | 7828748 |
|---|---|
| Commodity code | 8481 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | VIESMANN7828748, 2320472 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| VIESSMANN VITODENS 100-W B1HA 19 KW SYSTEM ERP SERIAL No. 7543420 | 41-819-36 | 41-819-36 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 KW SYSTEM ERP SERIAL No. 7543421 | 41-819-37 | 41-819-37 | — | — |
| VIESSMANN VITODENS 100-W B1HA 26 SERIAL No. 7560853 | — | — | — | |
| VIESSMANN VITODENS 100-W B1HA 30 KW SYSTEM ERP SERIAL No. 7543423 | 41-819-38 | 41-819-38 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 KW SYSTEM ERP SERIAL No. 7543425 | 41-819-39 | 41-819-39 | — | — |
| VIESSMANN VITODENS 100-W B1HA 35 SERIAL No. 7560854 | — | — | — | |
| VIESSMANN VITODENS 100-W B1HC 19 KW SYSTEM SERIAL No. 7570671 | 41-819-40 | 41-819-40 | — | — |
| VIESSMANN VITODENS 100-W B1HC 26 KW SYSTEM SERIAL No. 7570672 | 41-819-41 | 41-819-41 | — | — |
| VIESSMANN VITODENS 100-W B1HC 30 KW SYSTEM SERIAL No. 7570674 | 41-819-42 | 41-819-42 | — | — |
| VIESSMANN VITODENS 100-W B1HC 35 KW SYSTEM SERIAL No. 7570676 | 41-819-43 | 41-819-43 | — | — |
Showing 10 of 33 compatible appliances.
Documents & drawings
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