Ämne: Nibe 1255 English

[luk2011]

Hy
I hope i can write in english in you forum, will not delete my post and will me with informations about Nibe 1255 .
http://www.nibe.se/Produkter/Bergvarmepumpar/Sortimentslista/NIBE-F1255

This it's the newest heat pump modell from Nibe ? From when it's available ?
What do you think about this new modell ? It's worth to buy it or not ? Or it's better to buy 1245 ?
Nibe 1255 it have variable brine pump speed, and variable scroll compressor speed also .

http://www.evbutiken.se/vvs/15-varmepumpar-pannor/varmepumpar/markvarmepumpar-nibe/markvarmepump-nibe-fighter-1255

From where can i buy Nibe 1255 from : Malmö ?
Or from internet/on-line websites, from where can it get it for best/cheap price ?

What trench collector i need to use with this heat pump ?
https://www.google.se/search?q=slinky+kollektor&source=lnms&tbm=isch&sa=X&ei=sVYzU_H-Aqr-ygPn1IL4AQ&ved=0CAYQ_AUoAQ&biw=1280&bih=920#q=slinky+loop&tbm=isch

I can use Slinky Loop collector ? Or what kind of collector are you using ? What's the best choice to use a trench collector with Nibe heat pump ?

I hope will can reply to me, and will can me with Nibe heat pump

thank you verry much

luk

[Carl N]

http://www.bynor.se/category.php?id_category=3266
(They don't have any information in english but they have relative low prices)

The advantage with a inverter (compressor with variable speed) is that is easier to fit when you don't know the exakt heat demand on the building.
And if the heat system have low volyme of water (for example floor heating) you probably won't need any extra volyme tank to the heat system.

If you have a small building there is a price gap between the smaller models of 1245 and 1255 that makes it cheaper to buy a 1245, and the 1255 have a lowest output of 4 kW that makes the benefit of it lower for the small house.

I think you can use a slinky loop to this heat pump. In Sweden the slinky is not so common, we very often use a straight geothermal hose instead. But make sure you don't have too small collector, it's better to dimension the collector to big that the opposite.

[luk2011]

Thank you for your reply, and for decission to not delete my post, because it's not in swedish .
But, if will except the price difference between 1255 and 1245 , and will compare the both modell, what's the positiv and negatives for inverter vs on/off ?
Nibe 1250 it's an old model with inverter ? Whar problems it have an inverter in comparation with on/off ?
Nibe 1250 was a succesfull heat pump ? Have buy it many poeple , or it's not so popular than 1145/1245 ?

I ask you this, to find it's worth to buy an inverter heat pump ? ( except the price )
Here it's the Nibe 1245 -6kw :
http://www.bynor.se/product.php?id_product=2808

What's the life age of inverter ? How often will defekt the inverter in comparation with on/off ?
What mark of brine pump anc scroll compressor it have the Nibe 1255 ?
Nibe 1145 it have : Grundfos Magna 25-100 and Grundfos UPM 25-70-180

In Nibe 1255 which modell is ? Dunfoss ?

About straight tubes collector .
How did you calculate the straight tubes collector ?
Do you have here in this forum a post about collector ?
How long straight tube collectors you need for a 170m2 house ?
What kind of tubes must to use : 32" or 40" ?

How it's often made the straight tube collector : 4 x 100m circuits ? Or 6 x 100m circuits ?
Or are you using much longer tubes : 300-400m straight line tubes ?

What's the most common straight collector in Sweden ?

thank you

luk

[Carl N]

1250 was not so popular, probably because of the price, 1255 is cheaper.
I don't know som much about problems on the 1250.

I think the life age of an inverter is same as an on/off heat pump, sometimes better depending on how good the heat pump is adjusted. And it is probably easier to adjust an inverter.

I don't know which circulation pumps or compressor there are in 1255, but probably the circulation pumps are the same as in 1245.

To calculate the lengs of the collector we need a little bit more information, a estimation of the building's energy demand and where it is?

The usual dimension of the geothermal hose/tube is 40'', and no longer than 500 m. If you want a longer hose you combine for example 2 x 300 m.

[Sanntos]

Nibe has excellent information in english at http://www.nibe.eu/Domestic-heatingcooling/Ground-source-heat-pumps/

About the circulation pumps, they can be subject to changes so Nibe do not usually give that information, however they are helpful if you contact them. 

[luk2011]

For example : 6kw heat load , 170qm house , -15C lowest externel temperature winter , and it's in east side of Hungary .
I saw it, 1250 wasn't so popular, because the 1250 thread have only 4 pages, and 1245 thread have ( now ) 62 pages , so it's clear 1250 wasn't so popular than 1245 .

But what about electricity consumption for 1255 inverter ? It's lower than 1245 ? Normally most be lower, because that's the purpose of inverter to have a better/lower electricity consumption .

About the collector, with straight tubes what form it have ? What's the maximal tube length ? 100m ?
4 x 100m circuit ? Or 2 x 250m circuit ?

I hope i don't disturb nobody in this forum, if i'm writing in english .If i disturb somebody, please let me know .
I know i can get information in english from Nibe, but that's "official" information .
And i'm most interested about reality .About other people experience, in real life .

I know Nibe it's a Swedish brand, and in sweden you have history with heat pumps .
I wish to find from you as many information i can from Nibe heat pumps , and how did you use it, what kind of geothermal collector and so on .

 

[Carl N]

If the maximum heat load is 6 kW, then go for a 1245-6, there is no meaning by having an inverter that could give between 4-16 kW then. The Inverter vill allways work on partial load and will probably not work in the optimum frequency range. Under 4 kW heat demand it vill work like an ordinary on/off heat pump.

For this pump you probably can have one straight tube of 400-500 m, you don't have to divide up it into several tubes then. Or you can have a slinky, but I'm not familiar in how to dimension a slinky.

https://www.google.se/search?q=f%C3%B6rl%C3%A4ggning+jordv%C3%A4rmeslang&source=lnms&tbm=isch&sa=X&ei=-DI0U-_6Baio0AXRt4GYAQ&ved=0CAcQ_AUoAg&biw=1170&bih=829#q=jordv%C3%A4rme&tbm=isch

[luk2011]

If i choose Nibe 1255 or Nibe 1245 , in any of case, i need to use Puffer tank or not ?
How often use peoples Puffer for heat pumps ?

When the heat pump have many starting ( many on/off starting ), must to use a Puffer ?

But in case i use Nibe 1255 inverter, that will not have on/off starting, i still need Puffer or not ?

Nibe 1250
http://www.vvsonnet.se/sv/varmepumpar/nibe-fighter-1250-bergvarmepump.php

Nibe 1250 wasn't popular because of his verry high price .
In this way i can understand it, not so much people have choose it to buy .

[Carl N]

The buffer tank is needed if the heat system have low water volume.
I don't have any, and you can adjust the parameters on the heat pump to reduce amount of start/stop.
In most cases the buffer tank is unnecessary with an inverter, but i can't recommand an inverter if the house max heat load isn't high enough.

[luk2011]

The nominal flow ( Brine circuit) of the Nibe 1245 6kw = 1080 l/h (0.30l/s)
What's the spread of the Nibe for the 1080 l/h?

NIBE F1245 Installer manual
http://www.nibe.eu/nibedocuments/13955/231611-3.pdf
Please look it in : page 78 from this .pdf document.
I've looking for it, but i didn't find it this info .

Vaillant GEOTherm Exclusiv VWS 63/3 nominal flow =  1600l/h at a spread of 3K .
http://www.vaillant.at/stepone2/data/downloads/56/4e/00/09_wp_geotherm_excl_vws_63-103_1301.pdf

thank you

luk



 

[Carl N]

Hi!
Look at side 31 at the top.
The brine pump will automatically adjust the speed to optimal temperature difference.

[luk2011]

Can i control Nibe 1245 over internet ? I mean, to setup the spread, the circulation pump flow values etc .
So, i'm not talking about logging the results, and just to check it over Internet .

For example : i don't know how to setup something in Nibe 1245 . Then, can i ask someone, who know it, to logging to Nibe 1245 settings menu, through Internet, and to setup it ?
I think , many of you have heard about PC Remote control software : Teamviewer .
With that software you can work in a remote pc, in the same way than in your PC ( if you have a good internet connection )

Can i use Nibe 1245 in the same way ? To setup and control remotelly from Internet ?

https://www.nibeuplink.com

Can I control the entire heating system with NIBE Uplink?

All menus except service menus, my icons and time and date are accessible through NIBE Uplink. In addition, you cannot perform actions that require physical access to your system, e.g. reset or switch to emergency mode.

What is a connection string?

A connection string is a code that is used to ensure that only those authorized can control your system. By using the connection string for authentication you can be sure that only those who had physical access to your heat pump/indoor module can connect their user account to it and control it. The connection string is generated when you request a new connection string and it is then valid for one hour or until it has been used once. Neither NIBE nor any outsider can see the connection string, only those who have had physical access to the heat pump/indoor module.

I need to pay for Nibeuplink ?

Without to pay, i can't connect to my heat pump through internet ?

How much i need to pay it ?



thank you

luk

[Carl N]

Hi!
If you buy the premium version (249 kr/year) you can use uplink to change settings on the heat pump.
The base version is free of charge but there you can only watch the values.

http://www.nibe.co.uk/Home-Owner/NIBE-Heat-Pumps/heat-pump-accessories/ESV-201/

[luk2011]

Hi!
If you buy the premium version (249 kr/year) you can use uplink to change settings on the heat pump.
The base version is free of charge but there you can only watch the values.

http://www.nibe.co.uk/Home-Owner/NIBE-Heat-Pumps/heat-pump-accessories/ESV-201/

I've think it , if the heat pump it have internet interface, then i'll can connect it to my wi-fi router, in a LAN port, with CAT5e cable, and i can remote control the Nibe 1245, without to need Nibe services .

For example : i'll connect Nibe 1245 to the router, and i'll connect through a browser ( IE,Firefox,Opera etc ) to heat pump menu, and i'll can change the settings, the same way i can connect to my router, everywhere from the Internet, if i know my IP ( internet protocol adress ), and the user/password .

http://www.nibe.se/Aktuellt/Nyhetslista/Uppkopplad-varmepump-for-tryggare-varme/

NIBE Uplink finns i en bastjänst och två premiumtjänster. Bastjänsten är helt kostnadsfri, premiumtjänsterna ”Ändra inställningar” och ”Historik” kostar från 249 kronor styck/år.

And for Nibe 1245 the Nibeuplink Premium will cost 249 kr/year, or the price will begin from 249 kr/year, and will can cost even more, for example 500 ode 1000kr/year ?

But without to register the heat pump to Nibeuplink, i can't connect over Internet to my heat pump ?
Just if i'll register it to Nibeuplink services ?

thank you

luk

[Fattiglapp]

Hopefully you have already thought about this, if you buy  your Nibe here, you will get one that´s adapted for our Swedish electrical net ,400Volt, 3 phases, ground and neutral.

Is it the same standard in Hungary?

Or is it so that one can adjust New Nibe´s for different situations?