the coleman hotwater on demand
the camper watertank
Modifying our Coleman Hotwater On Demand unit
to run off our camper trailers water tank and pump has worked out to
be one of the best things I have done to our camper. This gives us
the ability to have quick access to hot water without having to
worry about the water supply. Additionally the hot water system can
be easily unplugged and relocated for use as a shower using its own
water pump and external water supply.
To achieve this I used the following parts-
- Hotwater on Demand hose adaptor
- 2 metres 11/16th reinforced plastic hose
- 2 meres 3mm twin core wire
- plastic “T” connector
- inline water tap
- hose clamps
- snap on hose fitting
- rubber “O” ring grommet (optional)
The first step was to extend the water hose and control wire on the
Coleman water hose adaptor. To do this I simply cut the control wire
and soldered in approx 1.5 metres of 3mm twin core wire extending it
to approx 1.5 meters in length.
To extend the water hose I unscrewed and
removed the existing fittings and original short hose from the
adaptor. I replaced this clear hose with approx 1.5 metres of
reinforced hose (the reinforced hose is less prone to kinking). As
the diameter of the hose was slightly larger I used a round file to
enlarge the hole in the securing gland nut on the fittings.
Prior to fitting the end to the hose, I
measured the hose against the wire to get them at the same length
and the taped the two together to create a loom.
Next job was to fit the “T” piece into the
output of my existing water pump. Then add a small amount of hose
and clamps to connect the inline water tap then another short length
of hose and clamps to connect to the snap on hose fitting that will
attach to the Hotwater on Demand hose adaptor.
Drill a one inch hole in the kitchen box fitted
with a rubber “O” ring grommet. Then join it all together and secure
the hose adaptor into the kitchen box.
I used the snap on hose fitting to keep the
hose adaptor unit standard, as it can be very easily removed and
refitted if you want to use it in another application or from an
external water source
Thanks to Rod Luhrs for this article