Based on info in this forum, when I installed my Eko 60 I set the boiler pump launch temp at 170ºF. Now that I've had 10 months of burning under my belt I am asking the question, "why?"
What is so special about 170º, apart from the fact that it is the highest launch temp setting available on the EKO 60? I understand that you want the boiler to start pumping when the water is hot and return water won't condense inside the boiler.....but isn't that what the termovar mixing valve and a by-pass loop is for? Keeping water under 140º from returning into boiler?
I am asking this question as I am trying to get my storage back up to temp after having to tear it down and refill with 50º water when it is 38º outside. I fired the boiler overnight and only had 70º water this AM....the EKO likes to kick on at 170º rise to 180º and cool back down to 150º thereby, shutting the pump off. It seems to cycle on-off-on-off like this in 20 minute intervals, while not rising the water in the storage much more than a few degrees each time.
So....I've lowered the pump on temp to 150º to see if that increases my heating cycles so I can at least get the tank up to 120º in the next few hours so I can do dishes--we haven't had hot water for a couple of days now since the storage tank has been down..... If this lower temp works, I might leave it like this, as I would have heat in the house and shop soone...
I understand--sort of--the the 170º temp helps keep the boiler & pump from dragging down storage temp on cool-down, but there must be a better way.
Love to hear thoughts on this.......
What is so special about 170º, apart from the fact that it is the highest launch temp setting available on the EKO 60? I understand that you want the boiler to start pumping when the water is hot and return water won't condense inside the boiler.....but isn't that what the termovar mixing valve and a by-pass loop is for? Keeping water under 140º from returning into boiler?
I am asking this question as I am trying to get my storage back up to temp after having to tear it down and refill with 50º water when it is 38º outside. I fired the boiler overnight and only had 70º water this AM....the EKO likes to kick on at 170º rise to 180º and cool back down to 150º thereby, shutting the pump off. It seems to cycle on-off-on-off like this in 20 minute intervals, while not rising the water in the storage much more than a few degrees each time.
So....I've lowered the pump on temp to 150º to see if that increases my heating cycles so I can at least get the tank up to 120º in the next few hours so I can do dishes--we haven't had hot water for a couple of days now since the storage tank has been down..... If this lower temp works, I might leave it like this, as I would have heat in the house and shop soone...
I understand--sort of--the the 170º temp helps keep the boiler & pump from dragging down storage temp on cool-down, but there must be a better way.
Love to hear thoughts on this.......