I Hydraulic Connections - Zodiac Heat Line 20 Instructions For Installation And Use Manual

2.2 I Hydraulic connections

• Respect the hydraulic connection direction (see the indications on the exchanger tank).
• Correctly tighten the hydraulic connections and check for leaks.
• Check that the pipe system is cleaned before connecting anything.
Tip: calorie exchange optimisation
• The water from the heating source must be at constant temperature.
• Respect the water flow direction in the exchanger. If the installation requires it, you may reverse the
pool's water circulation direction in the exchanger, see § « 2.2.3 Adapting the heat exchanger to the
direction of water flow (depending on the model) ».
2.2.1 Connection of the heating system connection (i.e. primary circuit)
• The primary circuit's spur must be upstream of any valves or pumps.
• Bare Heat Line: if the heating source is equipped with a circulating pump, an accumulator
or relay logic can be added to switch off the circulating pump and the heating source. If this
is not possible, provide a system to prevent any primary circuit water from returning to the
exchanger when there is no water circulating in the secondary circuit.
• The connection must be:
- Made in insulated pipes,
- Fitted with a safety valve (pressure limited to 3 bars) and a correctly-dimensioned expansion chamber,
- Use pipes fitted with automatic drains at their high points.
2.2.2 Pool system connection (a.k.a. secondary)
• No 90° bend is to be directly fitted to the input or the output of the exchanger.
• Leave at least 25 cm of straight pipe to prevent any chatter of the flow switch armature.
• The connection must be made:
- Using PVC pipes Ø50 minimum,
- Via a bypass (recommended to simplify maintenance and mandatory if the water flow rate of the pool system is
greater than 22 m³/h).
2.2.3 Adapting the heat exchanger to the direction of water flow (depending on the model)
• Remove the cover from the switch box and disconnect the regulator's two connectors to remove the cover,
• Unscrew the 4 retaining screws from the switch box's support.
• Rotate the heat exchanger and circulating pump 180 °.
• Position and secure the switch box support using the 4 retaining screws.
• Reconnect the two connectors to the regulator.
• Reposition the switch box cover and secure it with the screw.
7
: Pool water inlet valve
: Pool bypass valve
: Pool water outlet valve
: Heating water inlet valve
: Heating water outlet valve
: Exchanger body
: Pool circuit secondary)
: Heating circuit (primary)
: Circulating pump
: Automatic purge