system 4-50

I bid £5 for Lot 19...

1. Speedfit supply inserts both with and without O rings. You must use the withouts for compression fittings and not the withs. Otherwise you can use either. 2. Doing my Webasto I was supprised to read in the installation manual a strong recommendation NOT to mix suppliers of pushfit. I always use all JG speedfit.

As described above, the heater has 2 fans and 2 speeds, so perhaps 1 fan at the lower speed might give a quarter of the output (other permutations are available). No calorifier. In order, Webasto discourage but don't prohibit, the forum has not produced a massive turnout yet, and the blower box seller is a car specialist emphasizing that it is a heater using heat from a hot water device, and is not a complete heat source in itself. Better off? I have a complex situation balancing numerous requirements from my visitors against for example, the physical space required by radiators, and many other factors. The more I understand about the way things work, the more likely my final choice is to satisfy most but not all of these.

The blower is: QUIET HEATER Yes - only 46db noise output - you can hardly hear it. Requires hot water feed from your engine. Supplied as shown below so it's ideal for maybe a secondary heater in the back of a limo, van or motorhome. 12½" (320mm) wide x 6" (152mm) high x 5" (125mm) front to back. Heat output 5.5 KW. Maximum air flow 250 m³/hr. Simple plumbing - 15mm inlet and outlet. High efficiency copper core matrix with aluminium fins. Two 100mm, two speed axial fans with 400mm fly leads Supplied with wiring, connectors, in-line fuse and rotary control switch. There are two moulded-in mounting brackets which are ideal for floor mounting but you can easily fabricate some aluminium angle brackets for other mounting options. Fan motor maximum current 2 amps. Weight 2Kg!! QUIET CAR HEATER #HEAT5 This may be useful. It is a question of whether I can reduce the number of radiators required, 5.7Kw from the Webasto is a lot of heat, requiring a lot of radiator. A further question if I may. Cycling a Webasto is bad for it, but what does that mean? Is it cycling between full and half load, or is it cycling between off and some load?

I've had a webasto Thermotop C professionally installed but with me doing the water side, the radiators etc. I had intended to include a car heater blower that I've bought from Car Builder Solutions but am somewhat flumoxed by the Webasto instruction manual. Despite blower boxes and a fan-assisted warm air heater (I assume these are the same sort of thing?) being shown in many of their plumbing diagrams, their Plumbing Section, Water (Hints & Tips) has the following: "Blower Boxes" "Try to avoid installing blower boxes as they are not really suitable for use with these types of heater. The problem is that nobody manufactures a blower box specifically for hot water applications. The technology is derived from air-conditioning where it is desirable to have a long winding flow across the matrix to evaporate all the gas and to dehumidify the cabin. To use this same technology for heating will never work effectively as we need a buffer of water at each end of the matrix so there is parallel flow across the whole of the matrix and therefore a small delta-T (the temperature difference between the flow and return). With the standard air-conditioning derived units the delta-T will be unacceptably large by the time the liquid has exited the matrix because of the distance the liquid has to travel." Can anybody help with: Q1. Does my car heater matrix & fan constitute a blower box to be avoided, or is there a difference? Q2. Why is a big delta-T bad? Surely that is what we are trying to achieve ie a big transfer of heat out of the pipework into the cabin? Q3. What have I misunderstood?

I used to sell Duckhams when it was priced in £sd, but I can't remember how much!

If every poster on this forum adopted a lock and kept it oiled and tidy, what difference would it make?

I absolutely trust the people who manage landfill sites. And storage facilities for petroleum products. And nuclear plants. And ...

I swear at it, quite a lot. I find it helps.

Pela every time. I think (not sure) I get about a litre out per time by poking about a bit. Get the oil warm before you start. Have tissue ready to look at the dip stick when filling up as it is hard to see.

Very funny, but they still haven't got the message that the EU needs to change to survive.

Its a human thing, Spock. We've been here 14 days, we have to move. Warp factor 0.000007 please.

These jokes get on my wick, but I'll keep soldering on...

I have some of that!

Put your wheely things on your boat, throw the ballast out and everything unimportant, now your down to a couple of tons, you should be able to get sucked. We'll need a name for this arrangement, how about MotorHome?