Wetbacks are not permit table in the fire during commissioning.

After NBC has been issued if you find a local obliging plumber it is not notifiable to installation wetback into a fire.plumber in this case does not need to fill any forms to council :)

I too would recommend a fire with a connection to outside like the metro fires.Stops nuisance creeping drafts as fire has to have quite a bit of air and if you sit between it and its source you will feel it.
I have installed large open fronted fireplaces and we used to bury 80mm pipes either side with s/s grills in the floor.worked a treat to avoid drafts and provide vital air to the voracious fires. The metro fires use the same logic. If the connection is from fresh air through firebox to flue then that's a pretty near passive system anyway I figure.

Thanks, yes I'd seen the Eco Flue that Metrofires do - and they also have the direct vent which means they draw air from outside. However we also would like a wetback, and the one we like isn't compliant when it has a wetback attached..... so it's back to the list of compliant burners! The Firenzos seem to be ticking most boxes at present, but not sure how much they cost. Thanks again for the help.

Hi the metros can have the special flue that draws in the outside air and heats it as part of keeping the flue case cool.

Yeah, I would like to buy a small 2 bedroom house at auckland, but I have seen the property prices of auckland, it's too expensive and out of my budget. Please help me to search a house.

Don't forget about the flue gap either. Most woodburner flues are multi-layered with a gap for cooling air to run up from the room and out a vent from the external flue.

Some now use an "eco-flue", which can also be retrofitted if there is space, which takes the cooling air from the roofspace instead of the room.

We have been a tad slow in getting the plans done so have not decided on the woodburner yet. I'll let you know what we come up with as we plan to get things moving asap.

Hi jimbob, we are in the same situation as you and I've just been looking at woodburners in our local supplier. They seemed surprised to hear of someone wanting to get externally sourced air! We also would like a wetback, and it has to be a clean air woodburner which also excludes lots of models. I was wondering what decision you came to in the end and how you sized it for your house, bearing in mind all the closeness to passive house features. Are you moved in and have you tried it out? Thanks in advance.

I sell these on Trade Me as well as our website:

www.powerusagemeter.co.nz

http://www.centameter.co.nz/

Various things on the market but this springs to mind. You can also buy a plug in type meter that you can plug appliances in which will measure how much power they use until you reset the data.
Think you can ask for these at local electrical supplier and/or Mitre10 etc

Hi does anyone know of any other websites,magazines or places I can advertise for a eco rental place?
I have put an ad on here but just wondering if there is anywhere else I can advertise.
I realise most people would buy but I can't afford to and thought maybe someone might have one to rent?

Hi I was wondering if any one has a 1bedroom house they would like to rent out from November onwards.
It's just for one person (me)with a house trained cat, I don't smoke,I'm tidy and quiet etc.
I have multiple chemical sensitivity so I would need a place that's non smoking and not recently renovated etc as paint and strong smells affect my health.
Pref no carpet etc...
I'm wanting pref Rodney area but will consider other areas.

Hi there, I read your post with interest. Would you mind sharing your learnings re digital controllers/thermostats and heat exchangers for your ppv system? Hrv and dvs seem grossly overpriced for what they are selling and I'd like to give it a nudge myself, but it would be good to minimise my errors and thus keep the wife happy...
Cheers!
Best, t

This is also an advertisement for iTunes, how do we listen to this without having to download and install iTunes on ones PC.

Thanks for posting. I received this message too and had a similar response. MCW

What's the benefit of adding batteries to a residential, grid-tied system and what's the cost?

I got the chance to talk with Vector CEO last week and I recorded this interview. I'm interested in people's thought about this system. I'm certainly enjoying some benefit from it.

http://homestylegreen.com/vectors-home-solar-power-solution/

If you look at May 14 here -

www.facebook.com/passivehousenz

You will see an example of what you are asking.

From working with heat pipes transferring liquids, if the system is balanced, then the total mass of out going air = the mass of incoming air, thus the final temperature of the incoming air after passing through the heat exchanger will logically be (20) x efficiency.
Its doubtful you will get anything near 95% unless you spend a fortune on the heat exchanger, more like to be 50 - 70%, thus your final air temp will be between 10 and 14 degrees.

I have a question for the ventilation experts.
I understand that a Passive house will have a highly efficient balanced heat recovery ventilation system.
I think I understand the basic principle of how this ventilation system works
Stale air is removed via ducting and passes through a heat exchanger. The heat exchanger removes nearly all the heat from the stale air and uses this recovered heat to preheat the fresh air being brought in from outside.
This fresh, pre warmed air is then ducted into the house.
My question to the passive house experts or a ventilation expert is what sort of temperatures would the fresh, pre warmed air be?
Let’s assume that incoming outside air temp is zero and extracted outgoing house air is 20 degrees?
What would the temperature of the pre warmed air become? These ventilation systems talk about 90 or even 95% efficient...what does that mean?

This is truly horrifying. people I speak to about it are saying they will defy it if it happens. Tangata Whenua are particularly adamant. Most Northerners are of the opinion the law won't get the better of them regardless. My personal belief is that NZers have been ignoring laws about cannabis for a long time & will see this as just another similar situation.

http://www.fantech.com.au/AncilRange.aspx?RangeID=71

Contact details are on their website. They have other models as well.

Thanks for the advice from all contributors. I read this above thread a few days ago but for some reason it is gone. Could you post the company and web link as well?

I'm sure I posted on this thread, my post seems to have disappeared.

I contacted that company, they say they have a product ideal to stop air coming back through ducts

Price for 150mm SJK150 = $47 + GST
Price for 200mm SJK150 = $74 + GST

Interesting idea, much better than a standard extractor, though much lower volume I bet. I like the idea of doing it through walls, not having to cut big holes in the ceiling insulation envelope. I think I'd personally prefer to go larger scale though, you'd need a bunch of them and a lot of holes in your house to do that.

The issue looks to be one involving a new rating for inverters (that few if any currently possess). Discussion here: http://www.electricalforum.co.nz/index.php?action=more_details&id=1342850258&PHPSESSID=4f2447814f3a221a377fe49352632683

Not retrospective but will make it very difficult for new installations if it comes into force until such time that the manufacturers get up to speed on the new standard.