Hydraulic Connections - CHAFFOTEAUX AQUANEXT PLUS 200 Instructions D'utilisation

Heat pump water heater - TECHNICAL INFORMATION FOR INSTALLERS
In the event of a ducted product, allow a minimum distance between the product and the ducts to allow for the
removal of the evaporator filter (ref. fig. 6).
In the event of a ducted product with rigid pipes, during installation take all the necessary measures to ensure
maintenance operations can be carried out (fig.4, 5 and 6).
In the event of a non-ducted product, in order to avoid by-passes between the air intake and outlet, replace the grilles
on the product with accessory grilles (code 3078095 where not supplied), or do not remove the grilles on the product
and fit a curve in the delivery pipe (ref. figure 7).
WARNING: Do not use outdoor grills resulting in high losses, such as anti-insect grilles. The grids used
should allow good air flow, the distance between the inlet and outlet air should not be less than 50cm.
Protect pipes from the external wind. The expulsion of air in the chimney is allowed only if the draft is
appropriate, is also required periodic maintenance of the barrel, and chimney accessories.
The total static pressure loss due to installation is calculated by adding the loss of the single installed
components; this sum must be lower than the static pressure of the fan (par. 2.5)
WARNING! A type of canalization not suitable affects product performance and significantly
increases the heating time!

4.4 Hydraulic connections

Before using the product, we recommend filling its tank with water and draining it completely so as to remove the
residual impurities.
Connect the water heater inlet and outlet to pipes or pipe fittings that can withstand the operating pressure and
temperature of the hot water, which may reach 75°C. It is not advisable to use materials that cannot withstand such
temperatures. The dielectric union fitting with joint (supplied with the product) must be applied to the hot
water outlet pipe, prior to performing the connection.
Screw a "T" fitting identified by a blue collar onto the appliance's water inlet pipe. It is mandatory to screw on said
fitting a cock for draining the product with a tool on one side, and a suitable device against overpressure on the other
side.
In countries which acknowledge EN 1487 It is mandatory to fit a safety group onto
the appliance's water inlet pipe. The device must comply with the EN 1487 standard
and must have a maximum pressure of 0.7 Mpa (7 bar). Moreover, it must at least
include the following components: a cut-off valve, a non-return valve, a control
mechanism for the non-return valve, a safety valve and a water pressure shut-off
device.
See Figure 13.
The accessory part codes are:
1/2" hydraulic safety device (for products with 1/2" diameter inlet pipe)
-
3/4" hydraulic safety device (for products with 3/4" diameter inlet pipe)
-
Syphon 1'' code 877086.
-
Some countries may require the use of alternative safety devices, as required by local law; the installer must check
the suitability of the safety device he tends to use. Do not install any shut-off device (valve, cock, etc.) between the
safety device and the heater itself.
The device's relief outlet must be connected to a relief pipe with a diameter no less than that of the appliance's
connection (3/4"), with the aid of a siphon creating an air gap of at least 20 mm to allow for visual inspection; this is to
prevent any harm to persons and animals or damage to objects should the device activate and for which the
manufacturer shall not be held liable. Use a flexible pipe to connect the pressure safety device inlet to the cold water
system pipe, using a cut-off valve if necessary. Additionally, a water discharge pipe must be fitted to the outlet in case
the drainage tap is opened.
Avoid overtightening the pressure safety device and do not tamper with it.
It is normal for water to trickle from the pressure safety device during the heating phase; for this reason, it is
necessary to connect the outlet, which must always be left exposed to the atmosphere, to a drainage pipe that slopes
downwards and towards an area not subject to frost. It is advisable to also connect the condensate outlet to the same
pipe, through the connection located on the bottom side of the water heater.
The appliance must not operate with water hardness levels below 12°F; on the other hand (>25°F), it is advisable to
use a suitably calibrated and monitored water softener in the event of particularly hard water; in this event, the
residual hardness must not fall below 15°F.
code 877084;
code 877085;
71