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Jeff, I got your direct e-mail to me at the office, but thought I'd rather answer your query here, so that more people would be able to view the answer. In addition to the toilet itself, wire, terminals, hose and clamps, you'll need plumbing fittings to allow you to tee into the pressurized fresh water system on the boat. If it were I, I'd tee into the pressure line, then add a SHUTOFF VALVE, then plumb from there to the toilet. The shutoff valve can be extremely useful when servicing the head in the future.
The toilets come complete. If you order the pressurized fresh water version, it comes with the solenoid valve and vacuum breaker built-in. If you order the raw water flushing version, the remotely-mounted raw water pump is included. A mounting kit is also provided (to mount the head to the deck). The style of switch you select is also included with the toilet. A matching household-size seat is also included with each toilet.
The part number you inquired about (# 220HF01202) is a Marine Elegance, household size seat (all Elegance models have this), in white, 12 volt, with a basic push button switch. You push the buttom, it flushes. You let go of the button, it stops flushing. This is the least-expensive, bare bones model. You asked about the difference between this model and a # 220HF01212 - the difference is that there's no such model as a 220HF01212. It doesn't exist.
Here's the model number breakdown:
220 = Marine Elegance
H = household size seat (they all have it); if you add an "A" before the "H", it is bone colored, rather than white. No "A" before the "H" indicates that it is white in color.
F = solenoid valve and vacuum breaker for connection to onboard pressurized fresh water.
An "R" instead of an "F" indicates it is supplied with a remotely-mounted seawater pump, for raw water flushing.
0 = indicates that the fittings are straight hose connections, not 90 degree hose connections (all Marine Elegance units have the straight hose connections, pointing down toward the deck).
12 = 12 volt (24 in place of the 12 indicates the head is a 24 volt model. The Marine Elegance is not offered in 32 volt or in 120 or 240 volt).
Examples: 220HF012 = Marine Elegance; household size seat and bowl in white; built-in solenoid valve and vacuum breaker for connection to onboard fresh water; straight hose fittings, pointing down; 12 volt, with Smart Control, fully programmable switch.
220AHR012 = Marine Elegance; bone-colored household sized bowl and seat; remote intake pump for raw water flushing, straight hose connections pointing down, 12 volt, Smart Control, fully programmable switch.
A little bit about the (3) switch styles of switches available:
Switch styles are entered after the voltage, at the end of the model number. No entry = Smart Control, as described above. It has (4) buttons on the panel: 1) Normal Flush (timed flush - water in, 3 short discharge bursts, water in again); 2) Water Saver Flush (water in, 1 short burst, water in again); 3) Empty Only - push and hold the button, water will leave the bowl without any coming in; 4) Water In only - push and hold the button, water will come into the bowl. This has a timed cutoff and will only fill the bowl about 2/3 full, so that it can't overflow the bowl if kids are playing with it. This switch (Smart Control)is included with the most expensive version of the head.
01 entered after the voltage (12 or 24) = a 3 button momentary switch panel, allowing 1) water-only to come into the bowl, 2) water to exit the bowl without any water coming in, or 3) water in and water out, simultaneously. These are manual buttons that must be pressed in and held, for the function desired. this is the midrange priced version of the head.
02 entered after the voltage (12 or 24) = single push button switch. Push the button and water comes in and out simultaneously while the button is pressed. Let go of the button and it stops. This is the least expensive of the 3 versions of the head.
All versions of the Marine Elegance head have a built-in loop, enabling the head to retain water in the bowl between flushes. There is no need for external vented loop fittings to be added if you wish to retain water in the bowl. Additionally, the 4 button and the 3 button switch versions also have the ability to empty the bowl, if this is desired - such as when rough seas are coming up, and you don't want the water splashing out of the toilet onto the decking.
The programmable switch is the most popular version of the head, but is also the most expensive.
At the Miami boat Show which just concluded, we introduced the Marine Elegance head with Sea/Fresh Option. This is an extra-cost add-on kit that allows the user to select either pressurized fresh water OR raw water (seawater) as the flushing media. A switch is included with all the other parts necessary, that allows switching from one flushing media to the other, at will. I don't have all the specific details on it just yet, but it will be put on our website shortly.
