AX fitting airco system

Post your Cit/Peu/Ren air conditioning queries or advice.

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jsp
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Re: AX fitting airco system

Post by jsp » 24 Oct 2018, 21:17

Guess what I am finishing my engine and so I want to add the compressor already due space and the bracket holding the A/C compressor doesn't fit.

So there is a difference between steel and aluminium crankcase?

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Another question is how to add the belt tensioner?


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xantia_v6
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Re: AX fitting airco system

Post by xantia_v6 » 24 Oct 2018, 21:24

Cars with A/C I think always had the aluminium sump to bolt the compressor to. I think that the alternator bracket and tensioner were also different with A/C fitted.

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Re: AX fitting airco system

Post by jsp » 24 Oct 2018, 21:50

Thanks for the reply,

Alternator bracket are for both the same with A/C.

steel crankcase had a different mounting A/C bracket.

Just did some research on service.citroen

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Re: AX fitting airco system

Post by jsp » 11 Nov 2018, 00:33

Another question out of the blue is a 90A Alternator enough power for all the electrics on my car even after A/C install?

AFAIK:

Headlights 60/55w :14V = 7.5A each x 2 = 15A
Driving lights front 5Wx 2 =10W :14V = 0.7A
Driving lights rear '' = 0.7A
Indicators: 21w x4 = 84W : 14V = 6A
brake lights 21w x 2 = 42w : 14V = 3A

Wiper motor ~300w :14V = ~21.5A ??

A/C clutch 70W :14V = 5A
A/C fan push 200W :14V =14.3A
A/C fan pull 90W :14V = 6.43A

Radio 50W : 14V = 3.6A
Cigarette lighter for accessories 100W :14V = 7.2A ??

Ignition coil 98W : 14V = 7A ??

= 90.5Amps needed?

Anyhow I got my compressor bracket fitted:

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Last edited by jsp on 15 Nov 2018, 03:48, edited 1 time in total.

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GiveMeABreak
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Re: AX fitting airco system

Post by GiveMeABreak » 11 Nov 2018, 00:51

The highest output I can see from all the AX alternators is a 90 Amp Alternator in various brands. They go from 50 amp to 90 amp which includes models with air conditioning fitted. So as long as you don't have a load of amplifiers and a recording studio in the back you should be ok.

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white exec
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Re: AX fitting airco system

Post by white exec » 11 Nov 2018, 08:26

90A will be fine. Your calculation is around 'worst case, everything on', unlikely in practice. Some of your assumed wattages are a bit on the high side too.

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Re: AX fitting airco system

Post by xantia_v6 » 11 Nov 2018, 08:54

I agree that a 90A alternator should be ample. Your engine probably couldn't drive anything bigger anyway...

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Re: AX fitting airco system

Post by jsp » 15 Nov 2018, 03:46

GiveMeABreak wrote:
11 Nov 2018, 00:51
The highest output I can see from all the AX alternators is a 90 Amp Alternator in various brands. They go from 50 amp to 90 amp which includes models with air conditioning fitted. So as long as you don't have a load of amplifiers and a recording studio in the back you should be ok.



No I dont have a lot of audio in the car just basic two speaker and old 70s radio.

Edit I corrected my amp usage and it's just enough in the worst case.

Some of the electric parts. I dont have any info on those so I took the average.