Basics of heater function for my 64' c coupe
- Wes Bender
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Re: Basics of heater function for my 64' c coupe
When these Cs and SCs were new, you could obtain both interior heat and defrosting of the windshield at the same time, although the defrost was marginal when operated that way. To get good defrosting, pull the heat lever all the way back, select the off position on the dash lever and then close both sliding valves near the floor. For max interior heat, close the dash lever and open the sliding valves. It's all very simple.
Added by edit: For defrosting, the position of the dash lever only matters if you are moving. At rest and with the floor vents closed and heat on, heat will come out of the defrost vents with the dash lever in any position.
Added by edit: For defrosting, the position of the dash lever only matters if you are moving. At rest and with the floor vents closed and heat on, heat will come out of the defrost vents with the dash lever in any position.
Last edited by Wes Bender on Sun Nov 20, 2022 4:45 pm, edited 2 times in total.
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- Martin Benade
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Re: Basics of heater function for my 64' c coupe
So it would in fact send heated air to the windshield, based on the dash lever setting, correct?
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- Wes Bender
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Re: Basics of heater function for my 64' c coupe
Yes. Those fresh air valves are a bit complex in their operation. (The valves are complex but the operation of them is simple.)
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- Thomas Sottile
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Re: Basics of heater function for my 64' c coupe
SCR youse to sell auxiliary heater AKA blankets
- Greg Bryan
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Re: Basics of heater function for my 64' c coupe
While the operation is the same, the C had two types of heater systems. One is the 'USA' or 'RoW' style and the other is the 'Euro' heat system that was used in Germany and Sweden. I presume you have the USA type but plenty of the Euro systems ended up here - very distinct differences. Most obvious to the owner is that there is a snout that comes off the fan housing and large tube in the engine compartment of the Euro system.
The USA system has the flappers that you can see by peering at the underside of the engine. Both systems must have the linkage properly adjusted to put out max heat. Those procedures are in the repair manual for both systems.
The USA system has the flappers that you can see by peering at the underside of the engine. Both systems must have the linkage properly adjusted to put out max heat. Those procedures are in the repair manual for both systems.
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- Wes Bender
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Re: Basics of heater function for my 64' c coupe
I edited my post #16 to correct one item on defrosting.... We don't often use defrosters in AZ.
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- Ken Tuvman
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Re: Basics of heater function for my 64' c coupe
So for a B model (1961 T5) I only see floor vents - my heater is not hooked up yet - does this mean there is no defroster function & that wing vents keep fog off the front windshield?
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Re: Basics of heater function for my 64' c coupe
There is a tube that runs from the longitudinal area to a defrost outlet on each side
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- Ken Tuvman
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Re: Basics of heater function for my 64' c coupe
Thanks Greg - does factory manual show plumbing diagram?Greg Bryan wrote: ↑Mon Nov 21, 2022 1:04 pm There is a tube that runs from the longitudinal area to a defrost outlet on each side
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- Martin Benade
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Re: Basics of heater function for my 64' c coupe
Whatever defogger it has, don’t expect very much action from it.
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- Ken Tuvman
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Re: Basics of heater function for my 64' c coupe
Figured as muchMartin Benade wrote: ↑Mon Nov 21, 2022 2:13 pm Whatever defogger it has, don’t expect very much action from it.
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Re: Basics of heater function for my 64' c coupe
I think the manual does have a basic drawing
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- Wes Bender
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Re: Basics of heater function for my 64' c coupe
I think the manual shows the schematic of the levers, valves and tubes/hoses at the engine and they also show the fresh air valves that are in the luggage compartment, but I don't think the rear defroster or the actual routing of the air passages forward of the floor vents is shown anywhere. Obviously, if you had everything removed for serious bodywork they should be visible, but I've never actually seen them.
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- Greg Bryan
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Re: Basics of heater function for my 64' c coupe
This is from the TSB introducing the 'Euro' heater system. More info in an article I did on the system several years ago. (V41-Issue 3 September 2017, page 64)
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- Martin Benade
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Re: Basics of heater function for my 64' c coupe
Other than the engine, the car was identical with either heat type?
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62 Cabriolet
56 VW
02 IS 300
04 Sienna