GMC Hot water heater

bill rush

New member
Mar 8, 1998
19
0
0
Philip,

Thanks for the feedback. I am surprised that GMC never used a propane unit
in any of their production models. The wedges are a great idea. I have the
dinette behind the driver side seat so I'll have to think through how I
might accomplish the transition.

I don't really like the dinette anyway, so as usual one project may lead to
another.

Thanks again,

Biill Rush

> Bill,
> I can't offer any specific infromation regarding the direct replacement
> of the water heater in you 73 GMC Canyonlands since the recent
> replacement I did was in a 23 foot Midas Transmode conversion. However,
> I did installa 6 gallon Suburban direct spark iqnition propane model
> with engine heat coil and 110v back up. The location I picked was under
> the couch which I installed to replace the dinette unit directly behind
> the driver's seat. This was close enough to the engine that the hot
> coolant (sounds strange) hoses from the the engine cooling system were
> no more than 10 feet each way. The 110 volt electric power and propane
> supply line connections were straight forward installations as was the
> inside start / reset switch that I mounted under the sink. I did have
> two install two wooden wedges cut at about 10 degree angles to slightly
> tilt the heater up off the floor so its outside face woulld match the
> curvature of the wall. This allowed for a neat and flush installation
> of the stock trim frame and door Suburban makes for this unit. Before
> doing this I spoke with the technical advice department folks at Suburan
> who who did not recommend that the heater be installed at any angle
> other than on a level plane. However, when questioned they didn't say
> the heater wouldn't work if the coach where not level. I reasoned that
> the angle was not too severe on this basis and did the instlallation.
> So far it works fine and I 've used it while parked on some pretty
> unlevel (side to side ) sites. You should make up your own mind on this
> matter if you choose this manner of installation. One recommedation I
> would make if you select a model with engine heat option is to inslall a
> ball valve in the hot coolant line from the engine. This will allow you
> to adjust somewhat how hot the water in the heater's tank gets while you
> are on the road. It can get very hot and I've found that just barely
> opening the valve results in a fully heated tank by the end of the day
> but not with water that will scald. Good luck with your project.
> Phil
 
Bill,
I can't offer any specific infromation regarding the direct replacement
of the water heater in you 73 GMC Canyonlands since the recent
replacement I did was in a 23 foot Midas Transmode conversion. However,
I did installa 6 gallon Suburban direct spark iqnition propane model
with engine heat coil and 110v back up. The location I picked was under
the couch which I installed to replace the dinette unit directly behind
the driver's seat. This was close enough to the engine that the hot
coolant (sounds strange) hoses from the the engine cooling system were
no more than 10 feet each way. The 110 volt electric power and propane
supply line connections were straight forward installations as was the
inside start / reset switch that I mounted under the sink. I did have
two install two wooden wedges cut at about 10 degree angles to slightly
tilt the heater up off the floor so its outside face woulld match the
curvature of the wall. This allowed for a neat and flush installation
of the stock trim frame and door Suburban makes for this unit. Before
doing this I spoke with the technical advice department folks at Suburan
who who did not recommend that the heater be installed at any angle
other than on a level plane. However, when questioned they didn't say
the heater wouldn't work if the coach where not level. I reasoned that
the angle was not too severe on this basis and did the instlallation.
So far it works fine and I 've used it while parked on some pretty
unlevel (side to side ) sites. You should make up your own mind on this
matter if you choose this manner of installation. One recommedation I
would make if you select a model with engine heat option is to inslall a
ball valve in the hot coolant line from the engine. This will allow you
to adjust somewhat how hot the water in the heater's tank gets while you
are on the road. It can get very hot and I've found that just barely
opening the valve results in a fully heated tank by the end of the day
but not with water that will scald. Good luck with your project.
Phil