Where to Draw Fuel for New Diesel Heater

Anything related to the operation of your boat. Steering, Bilge Pumps, thru-hulls, bottom paint, etc.
Post Reply
User avatar
gmac98004
Scurvy Dog
Scurvy Dog
Posts: 48
Joined: February 25th, 2020, 10:55 pm
Vessel Info: Proud new owner - '98 355 Aft Cabin "Invictus"
6BT5.9M 210hp
Formerly - 1986 - 30' Newport MKIII
Location: Shelter Bay, WA
Has thanked: 464 times
Been thanked: 12 times

Where to Draw Fuel for New Diesel Heater

Post by gmac98004 »

Hello Everyone,

I'm beginning my diesel heater installation. I'm installing the heater in the hatch under the salon table. First step was removing the Red Dot which went relatively well. After some leakage, I managed to trim back the coolant hoses and get the space ready for install. I decided not to interrupt the coolant flow circuit for now. It remains a loop.

One of my concerns is where I'm going to draw fuel from. I'm leaning toward installing a bronze "T" in the fuel line after the primary Racor Filters. This may be more of a simple installation rather than tapping into one of the fuel tanks. (If they even have a spare access cap)

Invictus has Cummins 6BT5.9-M's. I won't be running the heater while under way. Is it possible this new "T" might foul up my fuel situation to the engines while running?

Please let me know what you think! I'm anxious to get underway this coming weekend.

Many Thanks, Greg
User avatar
bud37
Admiral
Admiral
Posts: 5182
Joined: April 23rd, 2015, 10:22 pm
Has thanked: 604 times
Been thanked: 1312 times

Re: Where to Draw Fuel for New Diesel Heater

Post by bud37 »

Adding extra fittings to fuel lines can be restrictive so it is good you are considering this. There used to be and I believe still is, brass high flow or full flow fittings available for those not wanting to restrict fuel flow in a system. I used them on the race cars. Sometimes in certain situations a "y" type is advisable over a "t" but IMO not this case, because you are not using the heater while the engine is drawing fuel.

Have a look around.
FWIW.....The above is just my opinion.
User avatar
Midnightsun
CYO Supporter
CYO Supporter
Posts: 2984
Joined: March 27th, 2016, 2:27 pm
Vessel Info: The Midnight Sun
2007 41CMY
Volvo D6-370's
Location: Montreal, Canada
Has thanked: 272 times
Been thanked: 1193 times

Re: Where to Draw Fuel for New Diesel Heater

Post by Midnightsun »

Factory install is from a dedicated fitting on the starboard tank on mine. No filtering was installed for the diesel heater draw.
Cheers, Hans
2007 Carver 41 CMY
Twin Volvo D6-370's
Montreal, Canada
Midnight Sun I Photos
User avatar
gmac98004
Scurvy Dog
Scurvy Dog
Posts: 48
Joined: February 25th, 2020, 10:55 pm
Vessel Info: Proud new owner - '98 355 Aft Cabin "Invictus"
6BT5.9M 210hp
Formerly - 1986 - 30' Newport MKIII
Location: Shelter Bay, WA
Has thanked: 464 times
Been thanked: 12 times

Re: Where to Draw Fuel for New Diesel Heater

Post by gmac98004 »

Hello Hans!

Do you know roughly where that dedicated fitting is located on the STBD tank?

Thanks, Greg
Post Reply