Installation Instructions - ATI di Mariani BB2205X Manual De Instrucciones

UK – pag. 2/4
4. DIMENSIONS (see FIG_4-1)
BB2205X -
BB22051X -
BB3005X -
BB30051X -
BB4505X -
BB45051X -
BB6005X -
BB60051X -
5. DESCRIPTION OF CONSTRUCTION AND OPERATION
The purpose of this appliance is to heat sanitary hot water in two different ways (see FIG_5-1):
A. through the heat exchange between the engine cooling water and the water stored inside the tank. Such a
thermal exchange is possible thanks to a heat exchanger. The engine cooling water circulates through a heat
exchanger placed in the middle of the tank to diffuse the heat uniformly.
B. by means of an electric resistance (supplied with the unit).
Main parts (see FIG_5-2.)
1. Storage tank: it is entirely made of AISI 316L stainless steel.
2. External casing: it is highly resistant to shocks and external solicitations, having at the same time a very pleasant
design.
3. Thermal insulation: made of polyurethane closed-cell foam prevents unnecessary heat loss. In this way the heat loss
by thermal inertia is reduced to 1 ° C every hour for a period of 24 hours.
4. Heat exchanger: it is made of AISI 316L stainless steel and its exchange surface allows to exploit at best the heat of
the engine cooling water and to get hot water also in extreme conditions (very small temperature differences).
5. Electrical heating element: The unit is equipped with an electrical heating element (500/800 / 1200W, 120 / 230V) to
heat water even when the boat engine is turned off (for example when the boat is at the dock) . Material: Incoloy, an
alloy resistant to corrosion
6. Thermostat: it has two functions:
a. adjustable thermostat: it cuts off the power to the electrical heating element when the set temperature is
reached (the temperature can be adjusted between 0 ° C and 65 ° C, according to the user's needs).
b. safety thermostat: in case of bad operation of the appliance, it cuts off the power to the electrical heating
element when the water temperature reaches 90 ° C. A manual intervention is necessary to restart the
appliance (manual reset).
Operating Temperature Range: 0 ° C to 65 ° C
Temperature differential: about 9 ° C
Safety temperature: 90 ° C
Max current: 20 A
Max temperature: 120 ° C
7. Cold water inlet
8. Pressure relief and non-return valve: it prevents the reflux of hot water through the cold water inlet. It is also a safety
valve against overpressure: it protects the tank against any possible excessive pressure caused by the expansion of
water while heating. The water is discharged through a suitable drain, which the valve is equipped of. Setting: 800 ±
50 KPa ( 116 ± 7 psi )
9. Hot water outlet
10. Brackets

6. INSTALLATION INSTRUCTIONS


The installation has to be carried out, in compliance with the current regulations, by a qualified person, being able not
only to set up the appliance correctly, but also to do all the necessary tests before starting up the water heater.

During the original installation or further maintenance, follow the instructions contained in this booklet carefully. Changes
to any type of connection or the non-observance of the supplied instructions will cause the guarantee to be invalidated.

Cut off the power to the appliance before installation or any intervention of maintenance or restoration.
7. LOCATION AND MOUNTING
The appliance is equipped with two fixing brackets (A - FIG_7-1 ). In this way we get an easy, but fixed and stable installation.
Use the kit of fixing nuts, that is supplied with the water heater, to fix the appliance.
The appliance has to be installed in such a way that the heat exchanger and/or the electric heating element are placed at the
bottom (FIG_7-2).
It is possible to install the appliance also on tilted walls (FIG_7-3). Also in this case the heat exchanger and/or the electric
heating element have to be placed at the bottom.
The appliance can be installed in any space, with no restraint to its conditions. What above exposed does not exempt from
respecting the instructions given in the paragraph "IMPORTANT PRECAUTIONS", at the beginning of this booklet.
For any other installation, which might not be contemplated in this manual, contact our technical office.
BB2208X - BB2212X
BB22081X - BB22121X
BB3008X - BB3012X
BB30081X - BB30121X
BB4508X - BB4512X
BB45081X - BB45121X
BB6008X - BB6012X
BB60081X - BB60121X
A B
mm 322 267 335
inch " 12,6 10,4 13,1
mm 322 267 470
inch " 12,6 10,4 18,3
mm 322 267 730
inch " 12,6 10,4 28,5
mm 322 267 920
inch " 12,6 10,4 35,9
210-0332_libretto_BB_inox_2015-02_testo_UK
C D E F
334 410 485
13,0 16,0 18,9
334 545 620
13,0 21,3 24,2
334 805 880
13,0 31,4 34,3
334 995 1065
13,0 38,8 41,5