Joined on November 2, 2010
Last Post on March 6, 2014
@ March 6, 2014 1:51 PM in Rinnai RH180 or 100 Gallon Atmospheric?Will email you some closeups when I return to the job site shortly.
@ March 6, 2014 1:50 PM in Rinnai RH180 or 100 Gallon Atmospheric?Thanks for the tip. There is a filter on the main that one of the employees changes regularly. I have room on the piping to add a filter if necessary.
@ March 5, 2014 10:28 PM in Rinnai RH180 or 100 Gallon Atmospheric?Just wanted to chime in. Installed a Rinnai RU98i and a storage tank for a restaurant yesterday. Set up the system so that even if the storage tank is cold, so long as the draw out of a faucet, sprayer or appliance is under what the tankless can supply, they get the hot water from the tankless and not the cold from the tank.
The employees of the restaurant were utterly surprised how the storage tank was full of cold water from filling the system, yet two minutes later they were getting steaming water at the sink sprayers. Job turned out real nice.
@ March 5, 2014 10:22 PM in Rinnai RH180 or 100 Gallon Atmospheric?To date haven't been happy with these. Actually ended up taking a few out and installing oversized indirects to handle dump load and large first hour ratings.
@ March 5, 2014 10:19 PM in Rinnai RH180 or 100 Gallon Atmospheric?Current tank is already jacked up on the thermostat by the home owner. He put the job on hold till he decides what he wants.
@ March 2, 2014 1:49 AM in geothermal vs. airsourceGood conversation going here. Curious to read the outcome if you ever go through with the install.
Have you looked into the Daikin Altherma? Less pumping loss, no need for glycol, no worry that the ground will dry up, etc. There may be competitors to the Altherma, however I have not looked into it.
@ February 28, 2014 4:00 AM in Rinnai RH180 or 100 Gallon Atmospheric?Good morning Larry W,
Unsure what shower heat exchangers are.
@ February 26, 2014 12:49 PM in Rinnai RH180 or 100 Gallon Atmospheric?Totally off target icesailor. Feel free to contact me.
Btw thanks for telling me about the direct fit mixing valve. Used it on a 50 gallon yesterday where a high recovery was needed but didnt fit due to an extremely small mechanical room.
@ February 23, 2014 7:12 PM in Rinnai RH180 or 100 Gallon Atmospheric?Tankless tied to a tank is fine. Tankless on its own not fine. Just take it as that, or feel free to contact me off line to discuss.
Regardless need dump load, so a tank and tankless would be great.
@ February 23, 2014 3:23 PM in Rinnai RH180 or 100 Gallon Atmospheric?As stated in the original post, a straight tankless wont due for reasons I wont discuss here. The 100 gallon tank with a mixer is looking better and better when looking at cost vs run cost vs maintenance. I may be able to put a high powered Noritz on the wall and connect it to a large ss or glass lined storage tank. Will present the options to the client and see what turns out.
@ February 23, 2014 3:18 PM in Rinnai RH180 or 100 Gallon Atmospheric?Yes I stand corrected, first hour is 149.56 based on a 100*f rise. I had thought the btu was 180 due to the name RH180.
This is a game changer.
@ February 22, 2014 10:49 PM in Rinnai RH180 or 100 Gallon Atmospheric?Thanks for the reply.
Many of my clients have large homes, this is another. How they spend their money is their choice. If they want to flush it down the drain through the use of many shower sprays or washing machine loads, so be it.
Im interested in the model number for the mixer.
I assume they run low on water due to the current tank being old. The dip tube is probably partially cracked and the bottom is most likely heavily scaled causing insulation between the burner and water.
75 gallon 75k, .7 energy factor
First hour 100 degree rise
100 gallon 75k burner, .7 energy factor
First hour 100 degree rise
Rh180 90k burner, .80 energy factor
First hour 100 degree rise
Any calculation to calculate the first hour rating with 125*f outlet from the mixing valve and 140f* (or higher) storage temperature?
Edited RH180 specs.
@ February 22, 2014 7:16 PM in Rinnai RH180 or 100 Gallon Atmospheric?Good evening Wallies,
Have a client with a 100 gallon eighteen year old atmospheric conventional water heater. He likes good quality new products. His kids have been complaining of not enough hot water. Capacity is needed as he drilled the restrictor out of the shower heads and likes to run as much dhw as desired.
On demand tanks are not going to work in his application for multiple reasons.
Before considering the Rinnai RH180 I offered a 75 gallon 75mbh atmospheric turned to the hottest setting with a asse1017 mixing valve.
Please post thoughts.
@ February 17, 2014 9:52 PM in resetJust curious, wouldn't the microbubble absorber work better on the system side? Granted it will be larger and cost more.
@ February 13, 2014 4:31 PM in Zone valves - on supply side or return?Do you guys put a check valve of any sort on the supply if the zv is on the return? I am lead to believe any pipe diameter over 3/4" will migrate flow due to enough room in the pipe to flow two ways based on the buoyancy of the liquid.
On another note, a trend I see as of late is plumbers zone with pumps and use a zv after the pump. To me its job security.....and not the way my company conducts business. When I asked a plumber recently he replied that check valves pass water. Its my belief that he isn't a good heating contractor.
@ January 31, 2014 10:36 AM in Thinking of replacing existing pump for a Taco Bumble bee pumpDont mess with a high head hx and dt. If you slow the flow too much you will loose more then you gain.
@ January 31, 2014 10:28 AM in Time to Upgrade my ModconIf you like tinkering with water temps, want a lot of on screen info, and a boiler you dont need a high head pump, go for the Knight WHN.
I service A LOT of equipment, From Munchkins to TT to working on Viessmanns and NTI's. My favorite is the WHN. I was going to go with the new 222F for my home, however with not seeing Viessmann at AHR and the lack of on board options (whn has three temps, can see percentage of fire, ramp delay, anti cycling, high fire cap for oversized equipement, etc.) I have gone back from being a Viessmann fan to a WHN fan boy. The 100-W still offers great packaging at a good price so for combi units on a tight budget for quality and space I will opt for installing those.
@ January 26, 2014 7:47 PM in System Running. I am extremely grateful!Nice work.
Install a quality caleffi auto vent. Add a small ball ball valve between the LLH and vent in the event it needs to be serviced/replaced.
@ January 25, 2014 7:38 PM in Monoflo systema picture is worth a thousand words. Post pictures of the pump and the piping.
@ January 23, 2014 2:20 AM in New Seminar on AIR!Thanks for posting Eugene.
For someone new to the world of AC (and ducted heat) looking to start off with ductless heatpump systems like Fujitsu, Mitsubishi and Daikin, is this seminar for me?
@ January 19, 2014 3:16 PM in Calculating savings with degree daysGood afternoon wallies,
Trying to calculate a clients savings with their new system.
Off the bat I see savings of +8% with the cold weather. I have ccf usage, thermal factors and dates. Fuel is NG both before and after upgrade.
Help would be appreciated.
Thanks in advance.
@ January 14, 2014 5:38 PM in Copper Pres Fittings Brand (Viega vs Nibco vs Cello)Good evening wallies,
We usually use Viega press fittings however it requires us to travel to the local supply house that stocks them. Our local supply house that we use for all of our other plumbing material carries Cello press fittings and at a good price. It a Canadian brand with a good warranty.
Anyone ever hear of them or use a Cello fitting?