Cruless
Member
how many heat vents do you have installed on the boat, also what size is the exhaust plate exiting the boat? is this the required diamter for the size of eberspacher, this sounds like the unit is getting too warm / overheating
Testing ohms/resistance
- Thread starter Colin K
- Start date
Colin K
Well-Known Member
Hello,
Thanks for all of the replies, appreciate your opinion on the combined heat/flame sensor and I recon if the same codes keep cropping up then I will get a replacment.
The 75mm pipe comes off the unit into a straight cowl and then about 1.5m along it has a Y tee into two 75mm pipes, then both have a 60mm take off them so it has a total of two 75 mm outlets (one closeable) and two 60mm ones.
Now the one thing that I have recently done which may have an effect ??? I have recently insulated all of the pipework and that had a massive effect on the heat output from the outlets (the furthest 60mm one barely worked prior) I wonder if I have over cooked it with the insulation? Insulating it was a real pain and I would not have done it without my 8 year old!!!!
Next time I am on board I could leave the heater exposed and run a simple length of 75mm from the unit into the cabin?
Thanks for your help chaps. I recon I should go back on board this weekend to have another go!!!!!
Cheers, Colin.
Colin K
Well-Known Member
Hello,
The exhaust goes out of the unit straight into a 90 deg steel elbow then into about 75mm of flexi this was longer but I cut it down as it had a leak. It had a split in it! Think the outlet is up to size I understand however the installation prior to this D4 was an old D3.
Cheers, Colin.
Cruless
Member
The exhaust pipe for a d4 should be 24mm internal diameter, so should the exhaust point on the boat from memory it's ok to shorten the exhaust as long as it isn't shorter than 300mm it will be ok .
From what you have said it is unlikely the insulation is causing a problem, the amount of heat vents is acceptable. Even if the d4 overheats it will run the fan to cool the unit before firing up next time it calls for heat. If the fan is running and no heat is being produced the unit has overheated. From your previous posts I suspect a wiring problem is still the main cause of your problems
From what you have said it is unlikely the insulation is causing a problem, the amount of heat vents is acceptable. Even if the d4 overheats it will run the fan to cool the unit before firing up next time it calls for heat. If the fan is running and no heat is being produced the unit has overheated. From your previous posts I suspect a wiring problem is still the main cause of your problems
Colin K
Well-Known Member
Hi,
The wiring that I "rejointed" last night was appalling I recon I could have done it better with my eyes closed. I sorted out the main feed wires and (7in all) more at the unit end of the loom but of course the same amount go from the other end of the loom into the 801 timer. So in the interests of box ticking I will do those this weekend. There is one wire (black and white stripped) that goes nowhere from the unit! I must make sure thats right.
I will break it to SWMBO tomorrow night after a glass of wine that junior and myself need a bit of father son bonding on board this weekend.
Cheers, Colin.
Imtamping2
Well-Known Member
Is the exhaust clear at the exit side of the boat .....no fenders or quay in the way to obstruct flow ?