Fitting a Peristaltic Pump.

[God55]

Hi,
I want to install a peristaltic pump so that I can run up through the ceiling prior to descending outside to the compressor. The pump I want to fit operates by linking the pump directly to the cooling electrical signal and runs for three minutes after the unit switches off. I am struggling to find the original instillation instruction manual, (Hopefully with a wiring diagram) in order that I can identify the cooling signal cable connection. Does anyone know of an easy way of identifying this connection (I assume that it is one of the indoor unit connections rather than at the outside compressor unit). Any other help or advise regarding the use or fitting of peristaltic pumps would be much appreciated.

Garry

[Simon Savin]

Hi you should find a lot of instruction manuals here

http://www.aspenpumps.com/indexenglish.html

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[God55]

Hi Simon,
Thanks for the link, that going to be very useful.
Without a manual for my AC unit I am struggling trying to identify the live cooling signal cable which runs between the outdoor and indoor units of the conditioning unit. I might be able to identify it by opening the outside unit and checking the voltage of each incoming cable at rest, and then when the indoor thermostat triggers the compressor I should see a demand on the line. However, I just thought that a more knowledgeable person than me perhaps an AC guy, may know straight away as most units are similar in there electrical connections i.e. N, 2, 3, E, 4 R1, R2.

Garry

[Simon Savin]

Hi Garry,

For the perstaltic pumps we use (Aspen) there are two probes. A blue one to be positioned near to the evaporator coil (not clipped to the coil u-bends though) and a red probe that is positioned within the room itself monitoring return air temp. The pump is then wired into either its own mains supply or the mains on the fan coil unit. There will also be two wires to act as high level shut off in case the pumps fail, more details are within the instruction book for the actual pump.

There seems to be a lot of interconnecting cables there that you mention. 7 interconnecting cables seem a bit excessive, most I see is 3-4 plus earth on Daikin, Tosh etc.

What model is the unit?

Cheers

Simon