Joined on February 12, 2005
Last Post on November 26, 2013
@ December 20, 2012 8:12 PM in In floor radiant max temp?So I have a system with 3/4 pex (orange) from the mid 90's. Large house, modern, all cement & glass walls. Zones will not make setpoint (or even close) at 15* nights. I am going to adjust my curve and check pump speed tomorrow but what is the max water temp I can run through a pex in cement system? Floors are like 2" thick, pex is in there somewhere! No details were given on that end, I just know what's in the boiler room, and it ain't pretty. Have to run to grand-daughter's piano recital this very second or I would give more boiler room details.....
@ December 15, 2012 2:29 AM in Honeywell wireless systemI thought Red Link or something like that just plugs in for Internet.
@ December 14, 2012 8:05 AM in Honeywell wireless systemWith maybe 40 wireless stats in use to switch air handlers ( had to program stats for electric heat so the fan kicks on regardless of heat situation) and not one issue. I think I installed the Prestiege. They installed in minutes and are a great product so far. It's been 6 months.
@ December 14, 2012 8:00 AM in Any electricians want to help me out with a question?You want the timer to run a 2-pole, 20A contactor so two normal circuits are switched together. you really wouldn't run #8 out there and use a 8-3 and a single pole 40. Then you have two 20A circuits switched. Use a PVC J box and lid. Paint it green.
@ December 14, 2012 7:51 AM in South Side ODR SensorAnd 3 stories.....does light ever enter that space? Got a laser thermometer to take temp readings at noon or 3 pm to see if they are very different?
@ December 10, 2012 11:50 AM in Equalizer up-size OK?So this Peerless 300k wants 1)3" or 2)2" supplies and a 3" header. No problem. My wet return is 1.5" and my return tapping is 2". I was planning on a 2" equalizer and return with the 1.5" tie in at loop connection. The chart says 1.5" equalizer for this beast. Is upsizing to a 2" equalizer a bad move in any way? I'm thinking 3" all the way.
@ December 10, 2012 12:14 AM in Honeywell pressure switchI would say not being 1 45* elow from max would surely help. Fieldpiece makes a sweet new pressure switch testing instrument but I don't have one yet because a failed pressure switch is uncommon. It's more likely your altitude or fittings/pipe size being near max. You can increase pipe size if fewer fittings is not possible. Use your analyzer to test negative pressure at the inducer.
@ December 9, 2012 8:25 PM in Honeywell pressure switchA positive or negative pressure switch? (monitors inducer or HX)
I've found on reoccurring issues the number of elbows or length or vent was right at max.
@ December 9, 2012 8:19 PM in I -PadCould not find it. I'm on a gen 1 though.
What is the app?
@ November 21, 2012 1:42 AM in HW Loop off steam boiler.are your tie in points and what size pipe to and from the WH? What do you mean by flow problem? Not making hot water? What size pump? Any chance of pics? Any check valves on the loop?
@ November 20, 2012 1:11 AM in Advertising methodsI don't use any myself, but here I would buy banner or signs at the minor-league ballpark before race cars. Different crowd, longer season, more folks with larger homes at the ballpark. Maybe ad space on busses or light rail? Here anyway, the race crowd would be the areas with scorch air and AC, not boilers.
@ November 19, 2012 2:23 AM in Water treatment for copper-fin snowmelt system?RBI, 300k. New HX 2 years ago. When I did the HX I set the prop glycol to -10*F. Two years later and a new Tek 430 control, the HX sounds like it has a jet engine firing up inside it!
I'm told by my rep the corrosion inhibitors have broken down and a film has formed inside the tubes so you have steam at the tube inner surface and 160* water in the middle. He said he had great experience just adding inhibitor / conditioner with chelate (sp?) but also sells a Rohmar cleaner that will remove this film.
Shoud I use the cleaner to be safe or will conditioner with chelate do the job?
Target temp is 140 but the 430 runs the temp to 180 on mild days with one zone calling because no buffer and it short cycles terribly by design. All warm floors and the driveway plus indirect.
@ November 19, 2012 2:10 AM in Water treatment for fire tube steamer?Big acct has a 1985 or so era Kewanee steamer. They have replaced 3 tubes recently. They were told by another co that a softener would fix this but I'm not sure hardness is the issue, but we do have super hard water and last year they fixed a ton of bad traps on drips and rads to stop steam from shooting out the collection tank vent. No steam out the vent now.
Any thoughts on water treatment or ph?
Glad to see several on here! I've been swamped, and between rentals, work, and some new hobbies I've been gone too long.
@ July 5, 2012 12:38 AM in Pulleys, motors, and horse power...Thanks for more great input.
10 stories. 1,2,3 floors are 4 units. 4,5,6 are 3 units. 7,8,9 are 2 units. 10th is all one unit.
But the floors with 3 units are 1/2, 1/4, 1/4.
1/4 units are 1000 sq'
1/2 units are 2000 sq'
Full floor is 4000 sq'
All 8' ceilings.
I would need to measure each blower and so on. That's why units that have reduced air when the coil is clean need more air, and thus a different ratio. Many run fantastic with a clean coil, and many still don't have the air they need for AC but since we install setback next heating season, the water temp is plenty hot enough to heat them with reduced air. They just suffer in summer.
@ July 4, 2012 7:44 PM in Pulleys, motors, and horse power...I seal what I find leaking in the mech rooms, but the rest is 1960 tin in the ceiling. I doubt enough leakage to make this big of a difference. Some barely have any air at any vent and after cleaning the coils they either shoot tornadic chiled air or have some improvement but not what we want. Of course, those units have new motors with a different pulley than other units. I have the pneumatics working great.
@ July 4, 2012 4:58 PM in Pulleys, motors, and horse power...Yeah, I figured there would be more to this than just getting more air movement.
The same procedure you described would check a motor and it's performance, right?
Big job, 32 units. If cleaning the coil does not get air to all ends of the condos, then I want to increase fan speed. Some units really suffer and have little air at the register. As I mentioned, pulley sizes are all over the place so I need to know what combo to use for what motor size to fix these. The water / refrigerant side is perfect. Now the air handler side needs to be right.
Thanks for the input,
@ July 4, 2012 4:19 PM in Pulleys, motors, and horse power...So I am servicing a large condo complex. Each unit has its own air handler.
Many have had their pulleys or motors replaced over the years to change the amount of air flow in winter to make less noise but that leaves them lacking in the summer for AC. These are hydro air coils in air handlers.
Question is, what is the correct process to check amps on phases to determine how many HP the motor is currently pulling (most in the building are 1/2 - 1 horse) and what pulleys I can swap to to get more air...like a 10 speed bike. Some 240v 2-phase, some 208 v 3-phase. Building is delta 3-phase.
Also, where do you measure a pulley to know its size? The shaft is easily measured with dial calipers but what about the belt side? Some are adjustable.
Many units need more air but I don't want to exceed the motor's capacity and don't want to go through the process of measuring all the ducts and air handler sizes since its all enclosed and build in 1960. No info plates on any air handlers, sizes differ from floor to floor with unit sizes.
Thanks! Happy 4th!!
@ June 21, 2012 11:51 PM in Need help pulling a vacuum...So I went back 3-4 weeks later on a no AC call, same unit. I swear to you all, I had a great vac pulled, no leaks with the nitrogen, and ran great when charged.
Pulled valve core, liquid side, no seal. One $.02 stem caused all that.
Some things you just have to figure out on your own. Thanks for all the great advise.
@ June 21, 2012 11:45 PM in Soft water for 1919 tube steamer make up?Customer has a 1919 huge tube steamer. It's had a few tubes reolaced and the returns are rotted in a few places. One pipe.
They had another guy tell them a water softening system will make this thing last way longer and will remove deposits from the system.
Opinions from the pros??
@ May 19, 2012 4:32 PM in Need help pulling a vacuum...So I got the last small system to finally pull down and stay down. Now I get a call about no AC and find the system flat. No pressure at all. Chage 300 psi nitro and zero leaks. Now after 5 hours of pulling down it hits 140 microns and jumps to 2400 when I isolate the pump, then it drops back to 1200 and holds.
Moisture AGAIN? Is it common with a 7 cfm pump to need to pull down all day? This is a 2.5 ton system, 30' lines.
@ May 17, 2012 3:37 PM in Need help pulling a vacuum...Always liked Glenn Fry.
I didn't know running all night was a possible necessity. Thanks for the tip. I'll do that. I'm at 50 microns now.