Bilge Blower

[tomschauer]

FEDERAL LAW:
183.610 Powered ventilation system.
(b) Each exhaust blower or combination of blowers must be rated at an air
flow capacity not less than that computed by the formulas given in Table
183.610 Column 2. Blower rating must be determined according to
AMCA Standard 210-74, Figure 12, or UL Standard 1128.
TABLE II 183.610
Column 1 Column 2 Column 3
Net Compartment Rated Blower System
Volume (V) of Engine Compartment Blower Capacity (Fr) in Output (Fo) in
and Compartments Open Thereto in Cubic Feet Per Minute (cfm) Cubic Feet Per Minute (cfm)
Cubic Feet (ft.3
)
Below 34 Fr = 50 Fo = 20
34 to 100 Fr = 1.5V Fo = 0.6V
Over 100 Fr = V/2 + 100 Fo = 0.2V + 40

[Rayjs148]

Thanks again to all the replies. From the discussion i will add a second blower and install the hoses following the layout found in the parts diagrams.

I would like to ask another question about Y valves for the head and if they are legal. I have one on my Santego that is disconnected and capped at the end of one of the hoses going back to the engine compartment. I would like to remove the valve and replace the sanitation hoses as there seems to be an odor from them. Should i open another thread for this.Thanks

[Viper]

It's not illegal to have the valve on board, it's just illegal to discharge overboard in Ontario. But ya, remove it and the macerator and related hoses to that circuit. Disconnect the macerator wiring at the breaker, and install a proper brass or bronze plug in the seacock and leave the seacock in the open position. If you don't do this, you run the risk of a failure in that plumbing circuit if it's not winterized, and people very seldom winterize the overboard discharge system because they don't think it's necessary if the valve is shut off and that system isn't used, that however is a problem waiting to happen and a real stinky mess to clean up.

[km1125]

In the USA, if you have that Y-valve (which is OK to have), it MUST be "affixed" some way to prevent an accidental discharge if you're in waters where it's illegal to discharge, which is pretty much everywhere but way offshore in the ocean. "Affixed" might be a padlock, a bolt/nut, or a heavy-duty ty-wrap. It needs to prevent someone from turning the valve, basically without tools. Unless you're an ocean-going boat it probably is a good idea just to eliminate it but taking all the precautions that Viper suggests.

[Midnightsun]

There are places where you cannot even have a macerator on board even if it is disabled. Many years ago I had my boat on Lake Champlain, they make their own rules there! Only stayed a year since we were always being harassed by the state patrol either NY or VT. Zero tolerance for alcohol! I had 1 beer for lunch and divulged this to the trooper when he asked about consumption. Really gave me a hard time about seizing my boat and huge fines but did let me go with a warning in the end. Probably had something to do with Quebec, Canada registration and I was around 25 years old at the time. Not sure how things are on Champlain today as this was over 35 years ago. Glad my boat is not there now with covid as I would never have seen it this year.

[bud37]

Source of the post Thanks again to all the replies. From the discussion i will add a second blower and install the hoses following the layout found in the parts diagrams.

I would like to ask another question about Y valves for the head and if they are legal. I have one on my Santego that is disconnected and capped at the end of one of the hoses going back to the engine compartment. I would like to remove the valve and replace the sanitation hoses as there seems to be an odor from them. Should i open another thread for this.Thanks

I agree withe the others, great believer in removing all old unused fittings, hoses etc from a boat that is being restored/refitted. Cleans it all up and one less thing to worry about down the road......