Some Notes On Ducting; Water Supply; Outlet/Terminal Fittings (Taps Etc.); Limitations - ESP Ecocent 200L Installation And Operation Manual

4.1 Some Notes on Ducting:

The maximum length of the ducting (input plus exhaust) that can be attached to the Ecocent is 16m. All ducting
should be 150mm or split into two ducts of not less than 108mm diameter.
The outlets should be fitted with a suitable gravity vent to prevent rain, debris, animals and plants entering the
ducts.
You can use rigid or flexible ducting. Insulated ducting must be used so that condensation is avoided. It also
has the added benefit of reducing any airflow noise.
When servicing the unit, ducting should be checked to make sure that it is clear and all obstructions must be
removed.

4.2 Water Supply:

Because water composition can vary greatly, it is not ESP's policy to issue recommendations relating to water
treatment. The user or the owner is responsible for contacting a specialized water treatment company to obtain
water treatment advice appropriate to your location. Appropriate water treatment processes/devices must be
fitted to ensure the longevity of the unit and its proper operation.
Bear in mind that the mains water supply to the property will be supplying both the hot and cold water
requirements simultaneously. Therefore, it is important that the maximum water demand be assessed
and the water supply checked to ensure that it can meet peak demand.
NOTE: A high mains water pressure will not always guarantee high flow rates. The main supply pipe to the unit
must be 22mm. The minimum mains water supply requirements should be 0.15 MPa (1.5 bar) working pressure
and 20 litres per minute flow rate at the Ecocent. At these levels, outlet flow rates may be poor if several outlets
are used simultaneously – the higher the available pressure and flow-rate the better the system performance will
be.
The unit has a design operating pressure of 3 bar which is controlled by the Cold Water Combination
Valve on the cold water feed pipework. The Cold Water Combination Valve can be connected to a maximum
mains supply pressure of 1.5 MPa (15 bar). The water supply must be of wholesome water quality (Fluid
Category 1 as defined by the Water Supply Regulations 1999).
The unit MUST be level, otherwise this could cause problems with condensate draining from the heat pump
section of the unit in to the condensate drain.
An inline strainer (if open vented) and scale inhibitor (WRAS approved) must be fitted "in line" on the water
supply to the unit. Failure to fit these will invalidate the unit warranty/guarantee. All fittings must be
WRAS approved.
If installing the unit in unvented configuration, an "unvented Pack", containing the required safety valves must
be supplied with the unit and there is likely to be an additional cost for this.

4.3 Outlet/Terminal Fittings (Taps etc.):

The unit can be used in conjunction with most types of terminal fittings. It is helpful in many mixer showers to
have balanced hot and cold water supplies; in these instances the balanced cold water supply can be taken
from the tapping on the combination valve . Branches to cold drinking water outlets should be taken before the
combination valve.
NOTE: Accessories should have a rated operating pressure of at least 0.8 MPa (8 bar).

4.4 Limitations:

The unit should not be used in any of the following instances:
4of 36 ESP400-10-200L and 300L