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MacPHJr

MacPHJr

Joined on August 17, 2009

Last Post on July 21, 2012

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Did they change system types

@ July 21, 2012 8:56 AM in What is this valve

I can ask the facility manager, but would the previous contractor (40 years ago) have converted a vacuum return system to a gravity return system? What would be the advantages of doing that? They are proposing a new boiler for next spring. The new system will have condensate receiver with boiler controlled pump.

The existing boiler looks like its piped incorrectly, It looks like it has a double header. Two riser come off the top of the boiler with swing joints into a 3'' header. Then there is a 3x4 bull head tee with a 4'' riser to another 6'' header. There are 3 steam supplys off the 6'' header. Doesnt look right to me.

Can you do a drop header on a boiler this size and then pick up the three mains separately? I will try to get some pictures next week.

Upside down

@ July 11, 2012 5:38 PM in What is this valve

Is this valve upside down? It looks like it is according to the schematic posted.

Low Pressure Steam Boiler

@ July 11, 2012 5:37 PM in What is this valve

Its connected to a low pressure steam boiler that is used to heat a dormitory that was built in 1931. It looks like they added a bypass to it, so at some point they may have been running higher pressure boiler. The boiler is a two pipe system with steam traps on mains and radiators.

We are there to replace the water main. Just curious to what this type of valve would be used for.

What is this valve

@ July 10, 2012 9:24 PM in What is this valve

Saw this valve in the piping system for a steam boiler at a school. Never saw one before. Anyone knows what it is used for. It has a manual lever, but its not usable because someone ran a copper heat line in the way.

Looking for Experienced Plumber/HVAC Mechanic

@ May 21, 2012 10:14 AM in Looking for Experienced Plumber/HVAC Mechanic

Our family run plumbing and mechanical company is looking for an experienced Plumber/HVAC mechanic to fill an immediate opening. Must have 10 plus years of experience with Massachusetts Plumbing license, their own hand tools and reliable transportation.
We are located just south of Boston and we service all surrounding areas (Boston, South Shore, 128 belt, etc.)
Must be able to work completely independently but will be provided by apprentice (if necessary). Must have experience with residential and commercial plumbing. Must have clean CORI report.
Must have experience with high efficiency heating systems (Viessmann, Burnham, tankless water heaters (Eternal, Navien). Must have excellent troubleshooting skills.
Must be able to be on-call for emergency (every third week).
We are looking for the full package. A guy that can do everything and has done everything. We are not afraid to hire someone smarter than us and to learn from them as well.
We are growing steady with a back log of service work and medium to large projects.
Experience with residential AC (SDHV, Mini Splits, Conventional) all a BIG PLUS.
Oil licence, sheet metal licence, and EPA certification a plus.
Please email your resume and salary requirements to pmmacdoug@hotmail.com

Heat Pump Swap Out

@ April 22, 2012 2:59 PM in Heat Pump Swap Out

I want to swap out the heat pump for my friends condo. He currently has a 1.5 ton York heat pump with a York AH w/ electric heat back up. We wont to leave the AH as it is in good shape. My questions was on the wiring. I sell Carrier and want to use an R-22 unit that I can get a good deal on. It has a 5 wire setup at the outdoor unit. The existing unit has 7 wires. The York has a blue and green wire. I cant read the diagrams on the existing units. Where can I get paperwork for these units? Any idea what these wires are used for? How can I retrofit the Carrier heatpump to York AH?

High Pressure Zone Valves?

@ February 2, 2012 8:21 PM in High Pressure Zone Valves?

Does anyone make a 3/4 c Zone Valve that will work in a high pressure hot water system. I'm having a problem with a typical Taco zone valve, bad water hammer as it closes which vibrates through the entire building.

Thanks for the advice

@ February 2, 2012 8:30 AM in Proper means of ACH

Thank you both for the advice. I have been told that an ERV would work as well, especially with wintertime humidity, but on the other hand we are in the Boston area and a HRV seems more appropriate. Any advice on what type of unit to use?

Basement Renovation

@ February 1, 2012 8:00 PM in Proper means of ACH

This will be a basement renovation with only two small windows and no bathrooms. Its going to be a home theater.

Proper means of ACH

@ February 1, 2012 7:31 PM in Proper means of ACH

The town in which we are bidding a project requires the renovation/addition have an ACH of .35 by a mechanical ventilating system. This is being enforced for the town's board of health. What is the proper way to achieve the .35 ACH?

Cross Connections

@ January 3, 2012 6:21 PM in Cross Connections

In Mass, who has jurisdiction over a backflow preventer for a fire sprinkler system? The plumber or the sprinkler fitter?

Vito 100 power pump module

@ November 28, 2011 9:50 PM in Wiring Vito 100 with Taco ZVC 404 and DHW Pump

How do you wire two pumps into the pump module of the Vito 100? I dont remember seeing two sets of 120v pump contacts.

Why do I have to wire the Alpha to a pump relay? Arent they designed to have constant power and shut-off when it senses that all zone valves have closed.

We like using separate pumps for our DHW. If a pump goes down, at the very least the customer can take a hot shower while we try to get there.

Wiring Vito 100 with Taco ZVC 404 and DHW Pump

@ November 28, 2011 8:20 PM in Wiring Vito 100 with Taco ZVC 404 and DHW Pump

My electrician is on vacation and it looks like I will be have to temporarily wire our new install. Here are the basics: one Vito 100 WB35, three Tac Erie zone valves, one Grundfos Alpha Pump, and one Grundfos 15-58 3 speed pump for the Indirect water heater.

The boiler pump will get wired directly to the power pump module on the Vito 100.The Alpha will have a grounded outlet. The zone valves will be wired to a Taco ZVC 404 exp. Here is my questions, can I wire my DHW pump to the zone valve controller? Can it be set up with priority? Can the two end switches be wired to send separate signals to the RT and the DT on the Vito 100 so that the it will bypass the outdoor reset control and go into high fire for domestic hot water production?

Am I reading my draft gauge correctly?

@ August 17, 2011 7:43 PM in Draft Problems

It is not fan assisted. I did use a CO analyzer. There was spillage at the water heater at 20ppm the entire time the boiler was running.

I use the Bacharach Draft Rite.It read -1 without the boiler running and was slightly less when the boiler was running. Is that the same as -.01?

Am I reading my draft gauge correctly?

@ August 17, 2011 7:43 PM in Draft Problems

It is not fan assisted. I did use a CO analyzer. There was spillage at the water heater at 20ppm the entire time the boiler was running.

I use the Bacharach Draft Rite.It read -1 without the boiler running and was slightly less when the boiler was running. Is that the same as -.01?

Draft Problems

@ August 16, 2011 6:34 PM in Draft Problems

Customer called and said there is flue gas spillage from her water heater according to the energy auditor. Spillage only occurs when either the boiler fires (shares vent) or gas range hood is turned on.

40k btu water heater with a 3'' gal vent connected to a 6'' vent connector. The 6'' vent handles both the water heater and the 140k btu boiler. 6'' vent runs 6ft to masaonary chimney. Chimney has 6.5''x6.5'' clay liner and is appx. 18ft tall. Has no obstructions. Very clean.

I checked my code book to make sure the sizing of the vent connectors and the clay liner was correct. But I couldnt find anything, yet.

Are the vent connectors and the liner sized correctly.

I have a -2'' of water column when just the water heater fires and -1'' when the boiler fires.

AO Smith Effex

@ April 19, 2011 8:52 PM in AO Smith Effex

Does anyone have any experience with these water heaters?

It was the ignition relay

@ April 18, 2011 9:32 PM in Vitola Vitoflame 200 with Vitoronic 300 problems

So it turns out that it was another bad primary ignition relay after all. I made sure to check everything while I was there because it seemed strange to have a relay fail after only a month.

What would cause a relay to fail twice?

Cant get burner to fire

@ April 17, 2011 4:32 PM in Vitola Vitoflame 200 with Vitoronic 300 problems

I cant get burner to fire. I have 120v to primary ignition control. but no power anywhere else else. I should have 120v to the motor which will turn on an cause the pressure switch to close which will send current to the ignition rod which will open the gas valve.

The last fault code on the burner was for a the air pressure switch not proving. Reset button doesnt fire burner, Neither does emission test, manual override switch, and relay test via the Vitoronic 300 control.

Cant get burner to fire

@ April 17, 2011 4:31 PM in Vitola Vitoflame 200 with Vitoronic 300 problems

I cant get burner to fire. I have 120v to primary ignition control. but no power anywhere else else. I should have 120v to the motor which will turn on an cause the pressure switch to close which will send current to the ignition rod which will open the gas valve.

The last fault code on the burner was for a the air pressure switch not proving. Reset button doesnt fire burner, Neither does emission test, manual override switch, and relay test via the Vitoronic 300 control.

Checked

@ April 16, 2011 6:33 PM in Vitola Vitoflame 200 with Vitoronic 300 problems

I have 10" wc before the regulator and 5" after right at the burner. All calibration on the burner was checked at last repair and was burning nice and clean. It's aVG2-63.

Vitola Vitoflame 200 with Vitoronic 300 problems

@ April 15, 2011 7:42 PM in Vitola Vitoflame 200 with Vitoronic 300 problems

I have no heat no hot water with this boiler set-up. A month ago I had to replace the primary ignition control on the burner assembly after getting D1 faults. Got a call this morning for same customer with no heat no hot water.

There is no fault on the Vito control but the burner still will not come on. Put system into manual override and still nothing. Push reset, still nothing. Checked every voltage connection, high limit, spill switch, sensors, programming, pretty much everything else.

Tech support and local rep believe I have another bad primary ignition control, but wouldnt there be a fault code at the Vito 300 control.

ANy help would be much appreciated.
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