Benefits
The home customer will gain freedom in the Shower
- Virtually non-stop hot water (no more waiting)
- Fast water-heater, for after vacation shut-downs.
- Several showers together
- 70% Energy savings
- External Connection
- Integrated with the Air-condition or Heat-pump installation
- Add-ON to the A/C (OEM)
Basics
The Alfredo module for the A/C, is a Hydronic unit that adds to the A/C the capability to economically heat the Sanitary (Domestic) water (DHW) .
Now the A/C can supply, both cooling , and air-Heating (Low cost, low-comfort) while allowing the user to shower without waiting or limiting themselves, at 70% savings.
The unit is supplied as a kit, currently designed to be an external Add-On, the A/C, with minimal integration, for ease of installation.
A streamline integration will simplify preparations and installation
Details
The system is composed of:
The Hydronic unit, which should be placed near the A/C external unit.
The A/C interface unit, which should be placed near the internal A/C unit
Connecting kits to the water-tank.
User and Technician control: WIFI or wired
The Alfredo Module operates as follows:
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The user may program different settings (times, Temperature), for the Water-heating. -
DHW Water-heating has priority over air-heating, or cooling. -
On detecting a situation where the times are in the set range and temperatures, or when the module "decides" there might not be enough hot-water for a full shower, so the module will turn the water-heating ON. - On heating, the Module will perform a process whose main function is to command the A/C to turn ON to heating, and divert the hot refrigerant to the water heat-exchanger and to transfer its heat to the hot-water system of the home, including the tank.
- When water heating ends, The Module performs an Off-process, and returns the A/C to the previous action it was doing (Air-Heat / Air-Cool / Off).
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In the summer: For the few minutes of Sanitary DHW heating, the A/C will continue cooling at about 70% of its regular capacity, and the user is not expected to feel any change. -
In winter: If the A/C was air-heating , then Air-Heating stops during water-heating.
The Hydronic unit
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Its purpose is to Interface the refrigerant (Coolant) side of the A/C, and pass all its heat to the circulating water to the DH -
The unit contains the Heat-exchanger, pump, valves and control units, and serves as the main controller.
The Hydronic Unit details:
1) The thermal heart – there is a heat-exchanger (HE), from refrigerant to circulating-water connected to the Hot-water system and tank. Valves and controls direct the refrigerant fully, either to the refrigerant-water HE or to regular air-evaporator .
2) Refrigerant connections are fully external to the Evaporator and the Condenser units. 2-pipe connection to the Condenser unit, and 2-Pipe connection to the Evaporator unit.
3) The units are fully self-contained for water flow, with a pump to circulate to the DHW Tank, .
4) The module Contains the control unit of the MAOZ system.
6) With the installer in mind, the unit contains the circulation pump, Flare refrigerant connections with 1-spanner operation, Pushfit non-spanner water connections, telephone crimp-plugs for fast electrical signal-wiring, and base-plate for simple hanging
7) Supplied in various heat-exchanger sizes (4,7,9,12,15, 18 kW), to connect to the differing needs of A/Cs, with refrigeration-pipes are in 3/8 – 3/4″ accordingly
8) User / Technician control is via WIFI or wired.
Heating Zones – up to 2 zones.
9) Optional connections are for:
* A “skirt” to cover the piping .
10) Size WxHxD : 40 x 63 x 32 cm.
* Power: The whole unit is 24VDC, Max 50W
The AC-DC 75W converter is supplied
The A/C Interface unit:
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Its purpose is to communicate and control the A/C internal unit, a visual status of the Module, and internal operations - On command, the unit communicates to the A/C using the regular IR interface (like any remote control). For easy installation, the IR LED is supplied on a wire, to allow the installer to locate the unit at will, thread (Through the grill air-inlets) to place the LED near the IR Receiver. The unit can “learn” to communicate with virtually all A/Cs
- In some units, a simple connection to the A/C electronics card is required.
- The unit contains the WIFI module to communicate with the home WIFI. A reset button is also available, and LEDs show the status of operation.
- The unit is wire-connected to the Hydronic unit. Size WxHxD : 8X8X3.
