Manifolds are required when more than one borehole is drilled for a heat pump installation. Manifolds are usually located in an underground chamber situated somewhere between the heat pump and the borehole array. All joints, elbows, couplings between the borehole and the manifold are electrofusion welded.

The function of the manifold is twofold

1. to combine the flows from several boreholes into single inwards/outwards flows going to and from the heat pump.
2. to allow the flow rates to and from the boreholes, which will be at different distances from the heat pump to be equalised. This is done by using the flowmeters and regulating valves built into the manifold.

The basic unit consists of:

• 2 Filling valves (1/2")
• OD40 long spigot (for connection to and from the heat pump)
• Mounting brackets
• Branch connectors complete with:
• Variable flow control
• Isolation valve
• Compression fittings to suit 32mm and 40mm PE100.

Extras:

• Thermometer with immersion sleeve, -20ºC to + 40ºC
• Manometer (pressure gauge) with assembly valve, 0-6 bar
• Flow Meters (for each branch) - 8 to 28L/min
• Ball Valves (between heat pump and manifold)

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