- INSTALLER 7 & 11kW HRC
70
HIGH TEMPERATURE HEAT PUMP
MANUAL -
17
valve and the tank.
• The number of elbows used and drops in pressure must be
minimised, the plumbing xtures used must be adapted to the
installation.
• In regions where high levels of limescale are present in the water
(TH > 15), we would advise you to t an anti-scale device on the
cold water inlet. The TH should be under 15.
• The concentration of chloride in domestic hot water should be
less than 60mg/L (quality level required for drinking water for
human consumption).
3.4 - Electrical control connections
3.4.1 - Connecting the Heat Pump control
3.4.1.1 - 2-core sheathed connection cable
• On the Pilot, cut the bus link to the right length:
LOOPS ARE FORBIDDEN.
• On the Pilot, cleanly remove 10 cm of the shielding to prevent
any short circuits.
• Connect the two wires (stripped to 10 mm) to the Pilot.
• IMPORTANT: DO NOT connect the bus link shielding to the
ground of the Pilot.
As the domestic hot water can reach
temperatures of over 60°C (notably to protect
against legionellosis), a thermostatic mixing valve
MUST be fi tted onto the DHW outgoing point to
avoid risk of scalding.
The Heat Pump is pre- tted with a non-polarised 2-core sheathed cable (communication bus). This 10m cable is supplied with and pre-
connected to the Heat Pump. It must be connected to the Pilot.
If the connection needed is longer than 10m, replace this cable with a 20m cable, which is available to order (Ref.751005).
Diagram of connection to Pilot without
the connection cable braided shielding
on the Pilot being grounded.
Diagram of connection to the Heat
Pump with MANDATORY grounding of
the connection cable
braided shielding (faston
terminal near 2-point connector).
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