General installation conditions for floor heat milling.

1. The rooms where underfloor heating is to be installed must be free of furniture and obstacles. This includes the removal of door thresholds.

2. Flow Hydronics must be able to carry out the work without hindrance from third parties.

3. The floor must be dry and sufficiently cured if newly poured.

4. The floor must be flat, level and free of residue from a previous finish (if in doubt, contact us beforehand). If the floor is too rough to be milled it must first be levelled and then milled. The drying time of the new levelling layer must be taking into planning consideration.

5. If Flow Hydronics arrives on site to mill a sand/cement floor as specified by the customer in the quote, and the floor to be milled is instead concrete, the customer is responsible for the cost of lost time to exchange equipment and the additional costs associated with wet grinding concrete.

1. Screed Layer

2. Levelling and/or repairs to the screed carried out by the owner or a third party must done professionally. Flow Hydronics cannot be held liable for damage resulting from improper installation of the levelling layer; repairs to the cement screed or any other replacements or manipulations of the surface to be milled by the owner or a third party.

3. Flow Hydronics is not responsible for the quality of the existing sub-floor and/or construction floor, both before or after installing the floor heating.

4. Our installation conditions assume a "normal" sand/cement or anhydrite screed where the floor heating will be installed. Tile, slate and concrete are not considered “normal” screed.

5. All known pipes in the floor must be reported to Flow Hydronics prior to milling.

6. Areas that are not to be milled must be clearly marked and communicated in advance. For example, areas like cooking islands and kitchen cabinets. (Note: Please keep in mind how a lack of heating in these areas will affect the room if the space is re-configured at a later date.)

7. A screed depth of 20mm is sufficient for milling if no pipes are present in the screed layer. If there are pipes in the screed layer to be milled, there must be at least 20mm of screed covering the pipes. All information regarding pipes and lines in the screed layer or unknown conditions in this layer must be communicated to Flow Hydronics before milling.

8. Despite taking precautions, if the pipes are damaged during milling or other work the costs of repair are the responsibility of the customer.

   1. We will replace or repair the damaged pipes immediately if possible so milling can continue. The customer will not be notified if the cost of the repairs excluding BTW are estimated at €150 or less. A cost will be calculated and added to the invoice as extra work.

   2. We will notify the customer in advance of repairs when the estimated costs of repair will exceed €250 euros; or we are unable to make the repair; or we cannot make the repair immediately. Any costs incurred to the customer due to the delay in scheduling resulting from the damaged pipes are are not the responsibility of the customer.

      Milling

9. As a condition for milling the floor, at least 2 electricity groups must be present in the house.

10. No electric household appliances must be in use at the time of milling. Damage or the subsequent failure of equipment as a result of power interruption or failure is not the responsibility of Flow Hydronics

    1. . This includes but is not limited to; washer/dryer; dishwasher; oven; electric heater.

11. All electronically sensitive equipment should be disconnect from the power source as a precaution.

    1. This includes but is not limited to; computers; game consoles; televisions.

12. Flow Hydronics is not responsible for damage or loss to the contents of refrigerators or freezers due to the disconnection of the power for the purpose of milling. The customer is responsible for ensuring that all appliances that where disconnected in preparation for milling are reconnected to the electricity after the milling is completed. This applies regardless of whether Flow Hydronics unplugged the appliance or it was unplugged by the customer. It should be assumed that all appliances could be left unplugged after milling without express communication by Flow Hydronics.

13. For the purpose of milling, Flow Hydronics assumes that the electrical installation and group box in the house is safe and sound prior to milling. If the group box is quipped with fuses, the customer must provide a few spare fuses. Flow Hydronics is not responsible for supplying or replacement of (main) fuses.

14. If milling is required on an upper floor, there must be an elevator or construction lift to raise and lower machines to the upper level. If a lift is not available, the customer may arrange an extra person to help lift and lower the machines if this has been discussed and approved by Flow Hydronics in advance of milling. Should the extra person fail to be there on the specified date and time of milling, Flow Hydronics reserves the right to levy an extra charge for lost time on the day of no less than €100/per hour or any portion thereof.

15. If pipes need to be installed under the floor or connected under the floor in a crawl space Connections from the crawl space must be dry, accessible and free of obstacles.

16. To prevent the formation of Legionella, building code requires water pipes be laid in a way that restricts the temperature of the water from exceeding 25°. To meet these requirements water pipes must be at least 25 cm away from the underfloor heating pipes. It is best not to lay the water pipes in the screed where there is underfloor heating. If a junction between underfloor heating pipes and water pipes cannot be avoided, both pipes must be well insulated at the point where they intersect. If water pipes are laying in a position that makes it doesn’t meet the tolerance for building code and safety, the pipes will need to be re-routed at the expense of the customer.