Weepmiser Output 2

[GoBuckeyes]

I'm using the second output of my weepmiser for various things, one being my trough & HPA rail heat pump input. I have it set up so that when the temperature is below 35 F, the weepmiser turns on the circulating pumps for both systems. What I have noticed lately is that I will hear the circulating pump come on and then go off 15 or 20 seconds later. When I go check the weepmiser, the display will be fluctuating between temperatures. It may read 35 for 30 seconds, then jump to 36 for 20 seconds and so on. This wouldn't be a problem except that when you're controlling an electric motor, a 1 degree differential is too tight. Has the weepmiser's second output always been like this and I just never noticed? Or is this new to the "upgraded" weepmiser that utilizes the digital temperature probe, which this unit happens to be?

Thanks

 

[car washing systems inc]

I'm using the second output of my weepmiser for various things, one being my trough & HPA rail heat pump input. I have it set up so that when the temperature is below 35 F, the weepmiser turns on the circulating pumps for both systems. What I have noticed lately is that I will hear the circulating pump come on and then go off 15 or 20 seconds later. When I go check the weepmiser, the display will be fluctuating between temperatures. It may read 35 for 30 seconds, then jump to 36 for 20 seconds and so on. This wouldn't be a problem except that when you're controlling an electric motor, a 1 degree differential is too tight. Has the weepmiser's second output always been like this and I just never noticed? Or is this new to the "upgraded" weepmiser that utilizes the digital temperature probe, which this unit happens to be?

Thanks

I have not had to do this but how about adding a delay on break time adj relay, this way if the temp is fluctuating it would allow your pumps to keep going for a set amount of time.

 

[Jeff_L]

It sounds like there is no "delay off" in play for the weepmiser. I'm not sure if it has that functionality, but you could always throw a delay off relay between the output and the pump. That would reduce the amount of fluctuation for you.

I have a weepmiser, but only use it for weeping my bays. My floor heat and trough/foaming brush anti freeze uses temp sensors from Control By Web and a PLC I picked up through factorymation. That way I put a little intelligence into it. For example, I measure the return temp of the floor heat, when it reaches 70 degrees I kill the boiler but keep the circulating pump on for another 120min I believe.

 

[Greg Pack]

If I read the directions online and interpet them correctly it does work based on a single degree difference. Delay off may work, but it may be just easier to buy and install a second digital refrigeration thermostat that will give you the capability of a several degree spread.

http://www.dixmor.com/TIMER%20PDF/DX1000%20INSTR.pdf


"Output 2 is designed to be an on-off switch. This output is programmed using the LL and HL settings in the programming
section. If the temperature is between the LL and HL settings, the output will be OFF. If the temperature is 1° below the LL
setting or 1° above the HL setting the output will turn ON and remain on until the temperature rises to 1° above the LL
setting or falls to 1° below the HL setting. Should you wish to control output 2 based on a temperature other than the
outside temperature, connect a sensor in the number 3 sensor position. Output 2 will then operate using the temperature
from that sensor. Output 1 will continue to operate on the outside temperature."