Joined on September 13, 2009
Last Post on April 10, 2013
@ April 10, 2013 5:08 PM in GeoThermal DX systemsBut have seen and worked on other ground source DX systems. Not a fan. High refrigerant capacity is the biggest problem. The systems I worked on held over 30lbs of R22, at today's prices! I know of 2 systems in my area, less than 10 years old that have been replaced with conventional systems. Of course current models would be R410A. Go with Water Source Geo and use a qualified contractor.
@ June 28, 2012 12:58 PM in EK2 headloss numbers?It is a low mass boiler. There control takes a demand from the t-stat (24V) and energizes the burner, circulator, and opens a zone valve. They make 3 sizes of HX that can take multiple nozzles to adjust firing rate. Each boiler comes with a circ. Or you can pipe the in primary/ secondary. They are set up to drop right in on a high temp. job with minimal piping. They have a factory piped in bypass, by the way.
@ June 28, 2012 8:29 AM in EK2 headloss numbers?EK boilers have there own manager control. Not the type of boiler you use ODR on.
@ June 28, 2012 8:26 AM in bad compressor?What type of metering device? Try unplugging outdoor fan, see if head pressure rises. How about indoor air flow? Your standing pressures when system off sound to low. What was compressor amp draws? Pumpdown test can't always be trusted, leaking service valve or reversing valve. Let system run for 10 min. place temperature clamp right on suction line at compressor and monitor. Kill power, if temp. reading spikes up immediately, valve is shot.
@ June 27, 2012 4:47 PM in liquid line driersTake the time pull the panels and replace it. Yes it is a pain!!!!! They put them there because it is easy at the factory. Plus companies that ship them for feild installation, find many never get installed!!! But I have found them restricted. I always try and put them at the indoor when possible. Especially if in the cooling mode and a TXV at the indoor. If it is heating season and a HP with a TXV on the outdoor unit, I will install it close to th outdoor TXV. I like them close to the TXV in use. I do prefer inside because of driers rusting and looking like crap. But it is a pain to take the torch inside as well. JMO
@ June 27, 2012 4:39 PM in Compressor shut downAs Empire said, need more info. Could be so many things. Amp draws and superheat/subcooling. Also capacitor weak? Outdoor fan motor going out on internal overload? Does the unit have a high pressure switch? Electrical connections tight? Proper wire size? May need hard start kit.
@ June 18, 2012 11:18 AM in Boiler wont fire unless..How many wires are going to zone valve? My guess is that you are not sending 24 volts to the valve or the valve head is bad. By manually opening it, you are closing the end switch. Which tells the boiler to fire.
@ May 21, 2012 2:18 PM in Lennox XC13 shutting off when thermostat still calling for AC / Unico fan blowingit's the t-stat or condensate. I just wanted to give you a description of the float switch. I wouldn't rule out the TVX, just because it's new. If the indoor unit was replaced and the other components were cleaned, there is no way of knowing how well it was cleaned. For that matter, I've seen bad TXV's out of the box. Based on the timing of on/off operation, my money is on the freeze stat. Which could be bad or antoher issue is causing it to do it's job. Such as airflow, charge, or bad TXV. For that matter a kink in the lineset, that nobody see's.
@ May 21, 2012 12:07 PM in Lennox XC13 shutting off when thermostat still calling for AC / Unico fan blowingIt is a safety switch problem. The question is, is a bad switch or an issue causing the switch to trip? The float would be located in the condensate line, you would see wires connected to it. My guess is a pressure switch or freeze stat. TXV could be acting up. If the tech. can't seem to find out what is tripping when he is there, I would suggest re-wiring the freeze stat to shut the entire system down. So at least when it happens again, you can inform him that everything shut down. But if just the outdoor shuts down you will know it's a pressure switch. This is not a FIX, but when you have problems you can't catch: Process of elimination!!!
@ May 21, 2012 11:55 AM in Happy Birthday Johnny WhiteTo one of the best in the biz...
@ May 15, 2012 9:50 AM in 2 stage heat pumpWhat kind of t-stat are you using Bob? You could do it multiple ways. I wouldn't have the HWC come on with a second stage call. You don't want the HWC to come on and satisfy the call right away. You want to give the HP time to try and satisfy the call. I would set it up as a 3rd stage along with an outdoor temperature control to hold the HWC off until it gets below a certian outdoor temperature. You can call me if you want to discuss.
@ May 2, 2012 9:23 AM in PRV blues.....I was wondering why they made them! LOL I have been giving thought to making these a standard on installs. I have had issues similar to the ones described above. I liked the Caleffi idea of the magnet on the air remover (Hot Rod), which will take the metal out. But the gunk is a whole different story! Anybody using the dirt separator's? If so, brand, success, not worth it?
@ May 2, 2012 9:10 AM in HBX controls, anyone using them?If you don't mind, keep us posted on what you think. I checked them out after seeing this post. Looks like a nice product and looks like it will simplify control strategy on combi jobs.
@ May 2, 2012 8:58 AM in Can we split tankless on-demand hot water unit for hydro air & domestic hot water?I agree Ice, but I was trying to point out that a combi isn't always the answer. If a combi doesn't meet the requirements, you have to look at another option. A boiler or a tanked type combi unit (like HTP stuff).
@ May 1, 2012 8:36 AM in TROUBLE WITH ALPINETim is the expert, his post is on point. But I would also make sure that the condensate removal is working properly. Have seen a lot of issues on mod/con's related to condensate. Proper combustion readings are a must along with proper venting and gas pressure.
@ May 1, 2012 8:31 AM in furnace sizingIf it is a furnace, you need to preform a load calculation (Manual J). Also duct work sizing and design is very important. A Manual D is used for duct sizing and design.
@ May 1, 2012 8:22 AM in Can we split tankless on-demand hot water unit for hydro air & domestic hot water?Make sure that you have a load calculation done for your heating needs and figure out what your domestic hot water needs are. The combi's work great if installed properly in the right application. Just make sure it fits your needs. The combi's have limitations. I have found jobs they wouldn't do the job. Others they were fine. One thing nice about a boiler, you have room for expansion!
@ May 1, 2012 8:15 AM in central ac cape homedone it like that several times. The key is having proper access to service the unit. Usually getting the duct work from one side of the house to the other can be a pain, if there are windows. Usually requires adding bench seats below the windows to conceal the duct. Are both floors finished? The last 3 cape's we did, we went with mini-splits. But it can be done either way.
@ April 30, 2012 4:50 PM in one mini split for entire floor....Look at Fujitsu's HFI system. They offer different types of indoor units, up to 9. Such as ducted type, which could take care of multiple rooms with one unit. You could also use wall units as well. You could also get away with one lineset between the outdoor unit and house, which means 1 downspout possibly. Don't get me wrong the Altherma is a great product, but if you don't have a local installer?
@ April 30, 2012 4:26 PM in Where to Go to Get Rare Fittings in BaltimoreI haven't had the pleasure of visiting them, however I have ordered things over the years. Thanks to Steamhead, letting me know they are the place to go to for the unusual things. The kind of things that the usual counter guy looks at you like you have 3 heads, when you ask for a specialty item. A wonderful place indeed!
@ April 26, 2012 4:42 PM in SpacePak Thermostat WiringW (white) from the outdoor unit should go to the heater package. If you want the heater to energize when the t-stat calls for second stage, wire W2 or AUX to the heater package as well. The L is a service indicator. So it actually is a 24 volt input to the t-stat.
@ April 25, 2012 12:39 PM in Honeywell HE-300 Humidifier problems...I agree with items others have mentioned, but I wanted to share an issue I had. I had a customer that we installed a Honeywell True Steam Humidifier with an Ecobee. Discovered that it was short cycling. After some troubleshooting and finding no obvious issues, I suspected the Ecobee didn't have enough humidity differential. So I contacted Ecobee and the tech. informed me that it had been an issue and they added a diff. setting to the t-stat. So the tech. accessed the Ecobee via the web and updated the logic. Problem solved! Along with some other features. Best part it was free!