Grundfos PumpPlan

The twin pump system designed to eliminate motorised valves in an S or Y plan heating system

Domestic Water Pumps / Grundfos Pumps / Circulating Pumps

Grundfos UPP15-50 PumpPlan is a revolutionary type of domestic pump system that eliminates the need for traditional two or three port motorised valves in central heating installations. Pump Plan has two independent pump heads and separate wiring centre which is connected to the boiler and controls (programmer and thermostats).

This enables PumpPlan to simultaneously circulate water around the heating and primary hot water systems. In addition, each pump head can be set to operate individually at different speed settings, allowing the installer to select the correct flow and pressure for each part of the system as required.

Accessory Port
The Pump Plan base casting has a 3/4" tapping which effectively is connected to the inlet port. It may be used for a drain cock, manual or automatic air vent. It may also be used as a connection for a combined open vent and cold feed. Note, it must not be possible to valve off the open vent. For convenience a drain cock can be fitted to allow drainage of the open vent after shutting off the cold feed.

Noise
Generally, there is no noticeably increase in noise when using the Pump Plan. The hot water head is normally set to speed one, this will help reduce noise when pump to the hot water circuit only when compared to a standard arrangement using a UPS15-50 set to speed 2 or 3. The weight of the Pump Plan also helps to absorb vibration energy, thereby causing less vibration transmitted to the system. However, if both pump heads are set to speed 3, then there could be some increase in noise.

Other Pump Heads
It is possible to replace the standard heating pump head with either a UPS15-60 or an Alpha head. Always ensure that the base casting is completely drained before removing a head. Otherwise water will enter the windings when the gasket is loosened.

Positioning
The unit may be installed in many ways, but always with the pump shafts horizontal. Attention should always be given to ensure that air traps are avoided in the system pipe work around the pump.

Bypass
A bypass is needed to satisfy boiler minimum flow requirements, where all the radiators have TRV's fitted. This should be fitted from the heating head outlet back to the central heating return. A bypass is also needed with unvented cylinders where a two port valve is used.

Hot Water Return
There must not be any other connections made to the cylinder return (i.e. towel warmer, bypass). The cylinder return must be taken directly back to the boiler return.

Click on diagram to view dimensions

Technical Data

Heating Systems

Op. pressure:    max. 10 bar

Where can I use a PumpPlan?

www.gasapplianceguide.co.uk is operated by IFS (Portsmouth) Ltd

Website design and leasing by Little House Associates