Carel Large ROL 160-1K2 - 6. Water Connection; General Water Connection Rules; System Supply and Discharge Connections

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ENG
Water connection
WTS LARGE +0300131IT rel. 1.0 - 05.09.2022
6. WATER CONNECTION
Have all plumbing work done only by qualified personnel (plumber or specialist with equivalent training) to minimize
risks.
Caution: Risk of electrical shock!
Hazardous electrical voltage! Before starting installation work ensure that the unit is not yet connected to the power
supply.
General Rules
• Obey local water utility regulations
• Verify that necessary safety measures have been taken – in compliance with either German Technical and Scientic Associa-
tion for Gas and Water (DVGW) guidelines (DIN EN1717) or local regulations – that eliminate backow of polluted water into
drinking water treatment facilities. This may require the installation of a system separator, allowable only when free discharge
into the drainage system is given.
• Ensure that there is a free outow and drain according to DIN EN 1717. Pay attention to the minimum requirement for the free
ow distance (between the drain hose and the siphon) of 26 mm to prevent microbial contamination.
• Supply water must not exceed 25°C (77°F)
• Allowable range of water pressure: 1,5 to 4 bar / 22 to 58 psi (150.000 to 400.000 Pa). If the pressure is below 1.5 bar, install a
pressure booster, if it is above 4 bar, install a pressure reducer after the reverse osmosis system.
• Install a drain tap shortly before the system to ush the pipe. Flushing the pipe prevents foreign particles such as swarf or
sealing material from entering the system from the pipes.
Connection of the system supply
» Make sure that the flow rate and pressure correspond to the values given in the technical data.
» Ensure that the water supply stays closed. This system may only be supplied with water during commissioning
(see chapter 8) !
Connection of the concentrate discharge pipe.
• The diameter of the concentrate pipe must be at least equal to the diameter of the connection piece (see technical data).
Notice: In any case, a particle filter (min. 100 µm) according to DIN 13443-1 should be installed before the reverse
osmosis system. Without a water filter there is a risk of damage to the system.
Notice:
The following applies to ROL units:
• For safety reasons the water connections are not screwed during transport. They must be screwed during installation.
• Remove the transport locks from the ow pipes.
Water connections final check
Go down the following water installation checklist:
- ALL screw connections and hoses firmly connected?
- Water supply line flushed before making connections?
- Water connection properly installed?
- Water discharge properly installed?
- Does blow-down water drain freely?
- Water supply line and water discharge leakage-free?