![]() ![]() ![]() The other option I'm looking at is to run a hot air duct over there.Īt the present time, with the new pump having run continuously for more than 24 hrs., my floor temp in both areas is about 79F. Hell she's even bellaching about cold towels but for the money it costs even she said she'd forego the towel warmer A hydronic baseboard might be a more cost-effective option. ![]() At around $2500 SRP it would hardly be worth it and besides I probably need an additional 2500+ btu's to get that room up to a temperature that would satisfy my wife. My research would seem to indicate that the most you can get out of the towel warmers they sell around here would be about 900 BTU/h with 104F water. Thanks.Ĭhris, yes I realize now that towel warmers can be a real heat source sorry for doubting you. According to my math I should be able to provide 2500 btu/h. I did swap out the pump for a Star S 21 and have seen some improvement. However he then went on to say that he didn't think a loop like that could supply 5000 btu/h. I then went on to speak to the technician at Uponor and he was very confident that a 5/16 loop of 150' could easily be fed by even the smallest of pumps and that a ECO 16 should handle it easily. Like yourselves he questioned using such small Pex (5/16) but agreed the Star s 21 should improve the performance of the loop. I then spoke to the Wilo technician and he agreed that because the ECO 16 is a delta P pump with modulating circulation it was possible that the existing pump was throttling back when it encountered a high resistance. He recommended I replace the pump in the troublesome zone with a Wilo Star S 21. Given that I have thermostatically controlled zones the guy questioned why I had Stratos ECO 16 pumps. I spoke to the company who designed and built my hydronics board. Tell me you guys are serious about a towel warmer. When Chris suggested adding a nice towel warmer I thought he was joking but now I'm thinking it is a possible option. if i can provide any additional info let me know. One of my other concerns is that the Uponor EP manifolds have a maximum flow rate of 1.2 gpm on each port (the main manifold supports 14 gpm).Īny suggestion and info will be appreciated. I understand that a high delta T is usually the result of insufficient flow. In other loops I have checked my delta T's and they range from 20F to as high as 35F. ![]() In the one loop that I am most concerned about I have reduced the delta T to about 15F 0.4 gpm. A few people have suggested that a value of 10 - 15F is desired. The current pump supports 16' of head Loss. I believe that the head Loss for all 4 loops combined will determine the size of pump required for that zone. Can someone please calculate the Head Loss in this loop? The other 3 loops in this zone are similar or in one case greater. In the loop of greatest importance the total length, including the runup & return from the manifold, is 150' There are no fittings in this loop. The loops in this zone are 5/16 AquaPex set in Uponor QuickTrac. From what I have recently learned I question why delta P pumps would be specified on a thermostatically controlled system? There is also some suggestion that the pumps are too small which leads me to my next point. My zone circulation pumps are delta P pumps (Wilo-Stratus ECO 16). Here's the various components I am looking at with a bit of suspicion: Upon closer inspection my other four zones look a bit suspect although they do seem to be generating enough heat. However after a couple of days of constant running we still cannot generate the desired warmth and appear to be maxed out on that loop. This is sort of a continuation of my previous thread titled 'How much floor tubing' We did kinda' sort that issue out and, thanks mostly to UrthBuoy, managed to generate some heat in the zone. ![]()
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