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Old 08-23-2006, 06:19 PM
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Fan, AC hookup

Hello.
I would appreciate receiving someone's expert "step-by-step" explanation on how to interconnect the following components/circuits.
*Fan power wire from fuse block
*Zirgo Electric Fan (2 wires)
*Zirgo Adjustable Temperature Control Switch (2 Wires)
*Vintage Air Tri-Function Compressor Safety Switch (3 Wires)
Are relays required? If so, a circuit diagram/drawing would be helpful.
My elementary thinking is to probably connect the fused Fan Power lead to one side of the Variable temp control, thinking that when the temperature exceeds a predetermined level, there would be continuity to the 2nd terminal; thus providing power to one terminal of the Fan. The other contact is likely grounded?? It's really the integration of the A/C's Trinary Switch that baffles me.
Thanks
Rudy

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Old 08-23-2006, 06:50 PM
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Try this--

Got this from vintage air web site,
The color coding is not the same as the switch--(at least on my car w/vintage air)


Dammit!!!! file too large to attatch

go to vintageair.com

Sorry
Bryan

can e-mail to you if you want



Hey---your trinary only has 3 wires----mine has 4
one pair for, hi press = fans on
one pair for, hi press = comp off & low press = comp will not turn on

Last edited by Bryan59EC; 08-23-2006 at 06:55 PM. Reason: Just noticed something
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Old 08-23-2006, 07:52 PM
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Fan, AC Hookup

I am interested in drawing this circuit, and I have visited the Zirgo website, however I am unable to download the wiring instructions for the two wire adjustable temeperature switch. Can you post the wiring instructions here for that item? Or just tell me how it is supposed to be wired in their instructions?

Vintage Air's site has a diagram for the Trinary switch, and since you will be using a two-wire fan, I can draw those items.

Thanks

Jon P
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Old 08-23-2006, 11:07 PM
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Fan, AC Hookup Schematic

OK so here is the Vintage Air trinary switch description and installation drawing.

I drew the trinary switch functions the way I understand it to work, and that is a very good design they have there. It will save an expensive compressor from either too low or too high pressures, and wisely only kicks in the fan when the pressure is high enough (220 psi) to warrant having the fan on. Thus at highway speeds the fan might not run, saving alternator, fan, and fuel, however it can run as needed.

Very smart product, the trinary switch.

The Vintage Air website schematic is the inspiration for this drawing.

I tried to download the connection drawing for the temperature controller you have, but no luck.

Your variable controller MAY be able to simply replace the NON-ADJUSTABLE sensor I put in this drawing. NOTE: It may require another relay to properly tie into the trinary switch circuit shown here.

Please post how your variable controller is supposed to be wired and I'll review and update the drawing.

Jon P
Attached Files
File Type: pdf Trinary Switch + Temp Switch + Relay Schematic.pdf (61.6 KB, 95 views)
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Old 08-24-2006, 12:08 AM
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Zirgo Instructions

Thanks Bryan & Jon.
I just returned to find your quick responses, and took a quick look at your "preliminary" drawing, Jon.
Bryan, I was wrong re 3wires to Trinary. Looked at it again; has 4 wires (2 Blu/2GrnBlk).

Jon. The instruction paper accompanying Zirgo's Switch shows 12VDC running through 20A fuse to one side of the fan. The 2nd fan contact/lead is shown going to one side of the Temp Switch. The other side of the temp switch goes to ground.
Thanks again for your collective responses. Will study drawing(s) again tomorrow.
Good Nite
Rudy
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Old 08-24-2006, 06:58 AM
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fan, AC Hookup

Rudy D,

Based on your description of the Adjustable Fan Switch (I did write to Zirgo so if they send other information, I will post it) it wires in same as a non-adjustable switch.

One inconsistency - on a reseller's website it mentions using a relay with the ZFSWA and in the instructions you give the ZFSWA connects to the fan, which implies it has a relay - or a hefty set of contacts built in. Since the switch is not wired to positive power, it must have a hefty set of contacts.

I have never seen a temperature switch that wires to the ground side of a fan, that does not need a relay. Let me know if any doubts exist.


Jon P
Attached Files
File Type: pdf Trinary Switch + ADJ. Temp Switch + Relay Schematic.pdf (65.2 KB, 73 views)
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Old 08-24-2006, 08:41 AM
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Fan, A/C Hookup

Thanks Jon
Luv your drawings, and information is readily understood.
Also noticed your independant post re Trinary. Helpful!
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