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ddlong1286@yahoo.com

ddlong1286@yahoo.com

Joined on August 12, 2006

Last Post on March 12, 2013

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Thought this was interesting.....

@ April 14, 2008 9:34 PM in Pictures

Yes I have pictures! The dome of a OROA head pressure control blown off. Do not know how it happened. This is a custom A/C, chiller for a mobil MRI. The aforementioned part was for the A/C side. We had to remove the blower assembly to replace the OROA. While there we also replaced the check valve and piping to accomidate the brazing process and it was still a pain! After replacing the OROA and during charging, head pressure hit 400lbs and I shut it off. It was 4:30 Sat. morning, had been there since 3:30 Fri. nite. Went back Sat. at Noon with another guy and found the TXV plugged and after replacing it the drier plugged. Luckily he was able to change it without pulling the other blower assembly! Going to replace the oil and reposition the hi-press switch to read discharge, not liquid line press. Don

Application

@ March 17, 2008 10:15 PM in Steam Boilers

Hi Brad, Heating with radiators and one steam coil in ductwork. Low pressure, but not sure how low. The boss mentioned copper fin tube, but had not heard of a manufacturer for this type boiler for steam. Forgot Crane Co. was on tag with the Pacific name. Approx. 5 ft wide and 8 ft long. Don

Kinds of Steam Boilers

@ March 17, 2008 9:42 PM in Steam Boilers

Hi all, The company I work for is looking at replacing 2 Pacific Steel Boilers, M# 415-BG, 2100MBH, 47 HP. The control panel is M# NP240-G-E, 3500MBH. My question is what would be a good replacement boiler? Do they make copper fin tube steamers? The system has a vacuum pump, ITT M# 10VLR2-20-35. Thanks Don

Heat Pump

@ March 5, 2008 11:03 PM in Heat pump

Hi all, Checked a heat pump today. AAON, 8 ton. Model-CA 1003 CA-08-2:OBAOOAO, Serial-200407-CCCF04076 with an air handler Model-H2-C1-2-16-3C2:OOOACAOOOX, Serial-200407-CBEC01183. The problem as told to me is freezing up during heating mode. 2-27 I first looked at it. 28 degree ambient. 28lbs lo, 42.4 degrees suction temp, 37 degrees comp. SH. 213lbs discharge, 111 degrees dis. temp. I thought the suction was low and discharge ok. Called AAON and was told that yes the suction was low. Gave them line set length and was told approximately 25 lbs total system charge. Went back today and recovered 16 lbs R-22. Added 6lbs for a total of 22lbs. Started up system and kept it on 10 minutes. 43 degrees ambient. 42lbs suction, 74 degrees line temp. Comp SH 55 degrees. Liquid line 265lbs 109 degrees, SC 13 degrees. Discharge line temp, 133 degrees. Press and temp at TXV bulb, 45lbs, 24 degrees, TXV SH 2 degrees. Sorry I don't have delta T across coils. Supply duct outlets are hot, system will not stay on longer than 5 minutes normally. I have used the test term. on defrost board to test defrost, works fine. Set on 30 minute defrost timer. Line size, 1 1/8 suction, 5/8 liquid. 36 linear feet, 11 elbows(LR). The sales rep. for Aaon told me that the system was supposed to be 2 4 tons instead of the single 8 ton. I am thinking that the system is oversized, does not stay on long enough to defrost. Any suggestions? Do my pressures look ok for the ambient? I will give a report to the boss tomorrow and see if the rep will spend more money on air flow and sizing. Thanks Don in MO

sharpie

@ February 26, 2008 9:47 PM in pet peeves in piping

I'd rather have graffiti sharpie writing than none at all. But I agree my writing is almost unreadable! Don in Mo

Thanks

@ January 17, 2008 10:00 PM in Who made it?

Thanks JJ My boss ordered the actuator today. This will let me know how the valve should work properly! Can another brand of actuator be installed on the valve? The vs 9313-312-4-10 has a Johnson Controls actuator on it-M9216-GGA-2. I printed out the install instructions for that one. Don in Mo

Who made it?

@ January 14, 2008 9:53 PM in Who made it?

Hi all, Found these numbers on a valve today. 8243 VS 9313-312-4-10 and 8246 VP 8044-662-2-12. They are 3 port valves to allow the pump a bypass or mix the supply and return on a hot water system. Need to know who made them? Thanks Don in MO

Info on Barber-Coleman controls

@ January 14, 2008 9:41 PM in Barber-Coleman

Hi all, Is there a place online to get Barber-Coleman info on their Actuators and drives? I am working on a MP-471-100-0-2 actuator with a CP8301-120-1 solid state drive. Thanks Don in MO

That's a problem

@ December 20, 2007 10:21 PM in Trust in Co-workers??

Talked to owner today to give me heads up on install date and why I was asking him for that heads up. He didn't know why a load calc wasn't done and only hearing my side doesn't believe me. The problem is the owner is not a hands on person. Bought the business as an investment, was a retail manager before and was trained by the distributer and previous owner. His view of a good job is, didn't take long, made money, and the customer doen't complain. Does not matter if done right, correctly, etc. Case in point, I get phone call from new service tech that helped on install today. Does not know the difference between manifold and incoming pressure. Can't tell me if the pressure was set right for said manifold press. Asks about perferated disks in combustion air. Installer couldn't find the info in the venting chart in the install manual. So the furnace works, but propably not correctly installed. This will be brought up tomorrow and the owner will complain about the installer, but will not try to eduacate them or put processes in place to prevent this from happening again. I know because I have seen it since I starting working for him May 2006. Hoping to hear about new employer tomorrow and will find out from the boiler owners if they are comfortable with the proposal and my reservations if they are not. Thanks for the replies Don in Mo

What to do??

@ December 19, 2007 8:37 PM in Trust in Co-workers??

Hi all To make a long story short, The company I work for sends me on a no-heat call. I find a 150,000 btu input Smith boiler installed on an old gravity system. No bypass, taco 007 installed with boiler, 21/2 inch down to 11/4 inch from boiler. Around 9 years old and at least 3 thermocouples burnt almost in two and the burner roll-out switch jumpered to keep it going. No Chimney liner either. Cleaned out heat exchanger. Told customer that we need to install bypass as in install manual and also recommended using B&G 100 instead of 007, install chimney liner at a minimum. Also recommended installing mod-con and replacing gas water heater to get rid of venting problems. Told them to contact our "comfort specialist" to get a load calc and find out the radiation from the cast iron rad. to match the boiler. Even gave them print outs from Dan's recommedations on gravity conversions. They met with the comfort specialist and he gives them prices on new mod-con and electric water heater, indirect is too expensive, says the salesman. I am informed by the salesman that because of him and myself they have bought the mod-con and lectric water heater. EVEN though they are not pleased with the past install. The salesman did not do a load calc. Wrote down the rad sizes, but did not find out the radiation output and tells me he sold a 199,000 input boiler of a brand I was not encouraging him to sell. After asking me what we should do with this job and how to approach it. Do I tell the customer they are not getting the service I recommended? What happens when I am involved in the install and asked questions by the customer that deserve an honest answer that looks like I led them astray?? When I question the salesman about the boiler size, he tells me it doesn't matter because it is a mod-con. And don't I have something else to do? What would you do?? Don in Mo

Specs for Longwood Furnaces

@ December 11, 2007 9:01 PM in Longwood Furnace

Hi all Had a guy in today asking about wiring controls for a Longwood furnace. Anyone a dealer in the past? Wondering what the max cfm is for them? Any other info would be helpfull also! Thanks Don in Mo

@ December 9, 2007 5:41 PM in water coloum vs water gauge

As a propane service man once told me,"unless you have documentaion on your gauges that they have been tested as to accurancy, the gauge will not stand up in court." As stated above," the water doesn't lie". I like to have both and test the digital occasionally to confirm it's accurancy. Don in Mo

Cutting Clay sewer pipe

@ December 3, 2007 9:53 PM in Plumbing Question

Hi all, I am currently having sewer problems in my home and need some info on cutting 4 inch clay sewer pipe. Will a carbide sawsall blade work best or what would be the best tool to cut it? It has a glass like surface and is a dark brown with a hub on it like cast iron. Any suggestions? Thanks Don in Mo

I can only guess, but,,,

@ November 23, 2007 8:31 PM in Boiler changeout proposal

I would assume they are for venting air. You close the gate valve and open the tap valve and bleed the air out. That is what I did, trying to get the residence downstairs zone working. Never did get warm water, but a lot of air. I will be replacing the zone valve next week and the W/R 3-wire also, that zone is not working either. I hope that will fix them, but not real positive. Don

boiler changeout

@ November 23, 2007 12:02 PM in Boiler changeout proposal

Hi all, I serviced this boiler this week, changing the relief valve, boiler feed valve, tridicater gauge, motor mounts, coulper and bearing assembly on the residence pump. I suggested they would save big bucks with a boiler changeout. Our salesman came by while I was working on it and asked what I wanted. Here is my suggestion. Put in two or three condensing boilers with a primary loop, boilers and zones as the secondaries. Replace the expansion tank with extrol tank or tanks and install spirovents. Use variable speed pumps to replace the current pumps and leave the zone valves. Also install isolation valves all around! Please let me know if that is a good idea or bad or what would be the best way to replace this boiler! We have Munchkin, Knight and Prestige condensing boilers available. Venting would go 60 to 70 feet. Funeral home was built in 1961 and the boiler is original. Each section of the boiler is 250,000btu and the far left is not used. Would be happy to answer any questions! Thanks Don

boiler changeout

@ November 23, 2007 11:17 AM in Suggestions for boiler changeout

Hi all, I serviced this boiler this week, changing the relief valve, boiler feed valve, tridicater gauge, motor mounts, coulper and bearing assembly on the residence pump. I suggested they would save big bucks with a boiler changeout. Our salesman came by while I was working on it and asked what I wanted. Here is my suggestion. Put in two or three condensing boilers with a primary loop, boilers and zones as the secondaries. Replace the expansion tank with extrol tank or tanks and install spirovents. Use variable speed pumps to replace the current pumps and leave the zone valves. Also install isolation valves all around! Please let me know if that is a good idea or bad or what would be the best way to replace this boiler! We have Munchkin, Knight and Prestige condensing boilers available. Venting would go 60 to 70 feet. Funeral home was built in 1961 and the boiler is original. Each section of the boiler is 250,000btu and the far left is not used.

Custom Mechanical Structures

@ October 1, 2007 9:48 PM in Lennox PMZ Penthouses

Hi all, I was informed from Lennox tech services that the PMZ penthouses where made for Custom Mechanical Structures. Anyone know about the penthouses or Custom Mechanical? The ECM motor drops out and starts and stops. It is a two zone system with barametric damper. The dampers show open and the baremetric is also open. I am thinking that something is obstructing the air flow and the motor overloads trying to achieve the correct air flow. It is supplying air for a 60,000BTU horizontal coil with a 5-ton txv and 6-ton condensor. Will using the Tecmate tool work to verify this? I do have the fax number for custom mechanical and will try faxing for their number tomorrow. Thanks for the help!! Don in Moberly Mo

Need to get rid of bubbles in site glass.

@ June 17, 2007 11:36 PM in Will suction/liquid line heat exchanger?

Hi all, Know its been a while but wondering if wrapping the liquid line to my suction line on a walk in cooler with 404a will get rid of the bubbles in the site glass? I have over 5 degrees subcooling, but still bubbles. Liquid line pressure is 260-270 pounds. I believe a little hi but am in a small room with not a lot of air change. Not really thinking straight as I have worked 5 hours today, and not getting home till midnite the past 3 days! Thanks for the help! Don in Mo

What Brand?

@ April 21, 2007 5:24 PM in freezer

Hello, What brand of CRO? I prefer Sporlan and you will find all the info you need to set theirs at their website, www.sporlan.com. Make sure you do not get a pressure limiting txv. It will duplicate the purpose of the CRO valve. I have replaced the CRO valve with a pressure limiting txv. One less part to fail and keep track of. If you keep the cro and txv setup, you will need to have a pressure tap before and after the cro to properly adjust the cro valve. Also remember, you should not adjust the txv till the box temp is close to the temp setting. By the way what brand is the unit? Hope this helps! Don in Mo

Thanks!!!

@ April 11, 2007 8:09 AM in Ceiling Radiant With duct install?

Good ideas, thank you. I just printed out the suggestions and will give to our salesman. Don in Mo

Installing ductwork in radiant ceiling

@ April 10, 2007 12:49 AM in Ceiling Radiant With duct install?

Hi all Our company is installing new ductwork in a ceiling that has electric radiant. Any one know a good way to miss the electric in the ceiling?? I know nothing about electric radiant ceiling except that most people that had them did not like the electric bill and tried not to use them. Our salesman asked me how to find the cables and had now clue, except a thermal camera which was shot down as being too expensive. Thanks for the help!! Don In Mo

Paul Mueller HiPerForm System

@ March 18, 2007 5:12 PM in Milk Coolers Again!

Thanks for the reply! This is a flooded evap. with a SUBCOOLING TXV. You measure subcooling out of the cond. coil. The sensing bulb is on the outlet of the cond. coil. According to the manual the valve is to maintain 10° subcooling. No super heat measurement is taken for system set up that the manual stats. No liquid line site glass. The valve is a sporlan brand, need to check their website and see if it is on there. Tank 1 is seperate and has two condensers. Tank 2 also has two condensers. They have Copeland 5 HP comp. Cnrn-0500 model numbers. They do have fan cycle switches. Two cond fans, one on all the time and one cycles. CI250, CO 150, factory settings. The system has no reciever, but has an accumalator with the liquid line going thru it for subcooling. Anyone familiar with Mueller products and the HiPerForm? I am contacting them to get set up as a dealer and try to get factory training. Don in Mo
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