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zones
A hardiness zone is a geographic area defined as having a certain range of annual minimum temperature, a factor relevant to the survival of many plants. In some systems other statistics are included in the calculations. The original and most widely used system, developed by the United States Department of Agriculture (USDA) as a rough guide for landscaping and gardening, defines 13 zones by long-term average annual extreme minimum temperatures. It has been adapted by and to other countries (such as Canada) in various forms.
Unless otherwise specified, in American contexts "hardiness zone" or simply "zone" usually refers to the USDA scale. For example, a plant may be described as "hardy to zone 10": this means that the plant can withstand a minimum temperature of 30 °F (−1.1 °C) to 40 °F (4.4 °C).
Other hardiness rating schemes have been developed as well, such as the UK Royal Horticultural Society and US Sunset Western Garden Book systems. A heat zone (see below) is instead defined by annual high temperatures; the American Horticultural Society (AHS) heat zones use the average number of days per year when the temperature exceeds 30 °C (86 °F).
Hi all
Need some tips. I have what is effectively a C plan system but want to split the heating into 2 zones. I have a 2 port 28mm valve on the hot water. Looking at the c plan wiring diagrams, would it work to have the zone valves off the thermostat circuits and the call for heat into the...
Hello all,
DIY non-expert here, please be gentle.
I'm about to purchase an underfloor heating kit to be installed in our kitchen (total area 9.5sqm, less if not under units, so a small area!). Obviously this would be a single zone system, so a simple purchase.
However, where I'm uncertain...
Hello all
I am designing an 4 zone central heating system, which comprises of:
- Vaillant Ecotec Plus 637
Zone 1 - Main Unvented Direct Hot Water Cylinder 300l
Zone 2 - Garage Rads
Zone 3 - House Rads
Zone 4 - UFH manifold (Nu-Heat)
2 Channel Programmer for zones 1, 2.
1 Channel Programmer...
Hi,
Wonder if someone can help, been trying to get an answer from Honeywell but can’t seem to get through with email or phonecalls :)
I’m replumbing my house (engineer, not a plumber) and am looking to do the below using EvoHome, but not sure if it works as I expect.
Setup:
S-Plan...
Hi all,
I have wet UFH 4 Zones. I used to have HIVE controlling it but I wanted a better way of controlling Zones as I was wasting money having all 4 zones at the same temp.
I have since dumped HIVE and have had emmeti actuators, Wiring centre and RF thermostats fitted.
My problem is that it...
The current heating system is a system bolier (Ariston) and a separate water tank that is heated by said boiler this has a honeywell control panel to fire up the boiler to heat up the water on a schedule.
I have a four zone Central heating system controlled by individual Salus RT500RF...
Hi all, Quick query.
I am still renovating my property and still a couple of years away from installing a dual zoned unvented cylinder with system boiler(my plumber doing the necessary work on the boiler/cylinder).
Currently i have a Y plan set up - so if i was to buy a NEST system now, i...
Hi, I am still looking at the final design of my revised central heating system. Currently I am on a hot water tank mounted on the 1st floor centrally in a 4 bedroom house, approx and near to 150m2 (so obvious regulations ensue). The System boiler is mounted on the ground floor in the kitchen...
Any evohome gurus here?
I am looking at a system but dont think it is possable to do so need some guidance.
System boiler with unvented cylinder in loft space.
Every room downstairs has wet UFH over a 12 zone manifold.
Upstairs we have a traditional radiator system of a 'open' rad on the...
Hi, please can some one point me in the right direction.
The property is around 6 years old and I believe all the zones have been working.
The house has a manifold (near the boiler) in the basement, with a secondary manifold on the ground floor with rads upstairs.
The basement manifold feeds...
roche1800
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floor
forum
not working
plumbing
under
working
zone
zones
Could really do with some advice please. Just moved into a new house with polypipe underfloor heating in 3 out of 4 rooms but only 1 room is getting warm. I've taken a picture of the manifold and it's clear that there is an issue but how do I fix this?
Stormingjock
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could
forum
not working
plumbing
someone
system
that's
turned
working
zone
zones
Hi.
I'm not a plumber but am fitting a new combi into my house with my old man who is a plumber, but he's what I'll politely describe as 'old school'.
The upstairs and downstairs rads do currently run off seperate circuits and I'd like to be able to run two thermostats to allow downstairs and...
Bibfrey
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different
downstairs
forum
house
plumbing
upstairs
zone
zones
Anybody know of a controller able to control 5 manifolds with 10 zones on each manifold
back story is its installed in a church 5 manifolds on the wall all fed off a domestic boiler. All manifolds fed in 22mm. The church left the heating on for 3 days solid and it moved up one degree !!!!!
Hi everyone,
i'm having some pretty annoying problems with my UF heating.
We have a new apartment with communal CHP. Inside the flat is are; uponor actuators and control junction box thing. A Danfoss plate heat exchanger (I think) and a Nuair heat recovery unit.
Basically, we don't have...
AlexTarchitect
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exchanger
gauge
heat
heat exchanger
heating
https
pressure
problems
ufh
under floor heating
underfloor
underfloor heating
zones
Hi all,
quoting up for some new builds and as far as I was aware you only needed to put zones in if the floor area was 150sqm or above? Is this correct? As I've also been told that with the build being less than 150sqm and having separate living areas etc you have to have 2 zones for this...
Hello all.
Are there any threads on here relating to balancing of rads in conjunction with radiators. I had a look but only found balancing a system with rads only.
cheers all
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