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frost
Frost is a thin layer of ice on a solid surface, which forms from water vapor in an above-freezing atmosphere coming in contact with a solid surface whose temperature is below freezing, and resulting in a phase change from water vapor (a gas) to ice (a solid) as the water vapor reaches the freezing point. In temperate climates, it most commonly appears on surfaces near the ground as fragile white crystals; in cold climates, it occurs in a greater variety of forms. The propagation of crystal formation occurs by the process of nucleation.
The ice crystals of frost form as the result of fractal process development. The depth of frost crystals varies depending on the amount of time they have been accumulating, and the concentration of the water vapor (humidity). Frost crystals may be invisible (black), clear (translucent), or white; if a mass of frost crystals scatters light in all directions, the coating of frost appears white.
Types of frost include crystalline frost (hoar frost or radiation frost) from deposition of water vapor from air of low humidity, white frost in humid conditions, window frost on glass surfaces, advection frost from cold wind over cold surfaces, black frost without visible ice at low temperatures and very low humidity, and rime under supercooled wet conditions.Plants that have evolved in warmer climates suffer damage when the temperature falls low enough to freeze the water in the cells that make up the plant tissue. The tissue damage resulting from this process is known as "frost damage". Farmers in those regions where frost damage is known to affect their crops often invest in substantial means to protect their crops from such damage.
Hello all. My first post.
I have a Vaillant eco tec boiler in the garage with built in frost stat. There is also a Honeywell frost stat inside the garage wired up to the boiler. The boiler is coming on when the temperature dips but all radiators get very hot and stay on for ages (days) even...
If I switch off radiators in rooms that are unused and not going to be used for a few months will that do any long term damage? I don't really think that the pipes can freeze as the rest of the house is still heated and is warmish. The rooms where the heating is off are really cold if that makes...
Does anyone have a fix or ideas about a Sari Gas Zoom 420 boiler where the frost stat is faulty. The pump and fan cut in during the night and the green frost neon begins flashing. The gas valve does not cut in. When the hot water thermostat is switched off then the boiler close down. Is there a...
Hi all, after a bit of advice please. Have a Worcester Bosch Greenstar boiler in the garage, all pipes are lagged into the house and there are both frost and pipe stats fitted. Can anyone tell me what temperature these stats should be set at? Both are Honeywell. Not sure if they are currently...
Hi
Has anyone got any experience of the Frost Sentry Trace Heater? - See video below
http://www.youtube.com/watch?v=5nlnQbMqMYc
I want to fit trace heating but my condensate pipe passes through an external concrete step to reach the drain so fitting an element around the pipe in...
Hi There, new to forum and DIY plumber. Been having problems with CH running flat-out even with controller off. Bought new controller to fit but checked behind controller and wall plate has only 5 wires, not 6 as shown on wiring instructions. Wire 2 CH absent. System has been in use for...
paulgclarke
Thread
boiler
controller
drayton
frost
temperature
wiring
Ok, got a landlord who has a boiler in a outbuilding and wants to prevent the boiler from firing all night due to the internal frost protection activating at 5deg., heating all the pipes to 30deg. He wants to save on fuel consumption.
I've had to install an electrical relay system but need to...
Evening all I've got a boiler to install next week and want to install a magnaclean with it , but the boiler needs to be housed outside in the old coal shed which will be all insulated but will the cartridge part of the filter be ok as I wouldn't be able to insulate it properly or should I try...
Hi,
Can anyone tell me the function of the frost stat connections in this boiler. I've had this one installed in place of an old Worcester that had a frost stat in the loft. Useful, as it brought the full CH on when required and kept the loft pipes from risk of freezing (they are insulated as...
Anyone install trace heating on external condensate pipes?
Never done it although I'm considering it for the winter coming in.
Will it actually prevent it from freezing up?
I'm also considering installing a frost stat on the boiler pipework to help prevent bursts, what's the best pipe to put it...
daft quaestion but one i would like to know...probably only put one frost stat in.
if a frost stat powers the boiler when it detects a tempreture of 3 degees or so on what then turns the boiler off, or does it just turn itself off when the boiler stat realises it has reached its max?
stupid...
Got a call today by a customer who says that his 2 year old Ariston 32 Genus has been Id'd as damaged by frost at a rental property. Only noticed when a new tenant moved in this week. Previous tenant never mentioned it! He wants me to price up to replace. Plan to give rough estimate for straight...
problem,, installed a boiler 2 years ago all working fine however the condense pump keeps freezing.
the boiler is suitated in an outhouse and so is the condense pump, i have lagged the pipe itself that is not freezing the water inside the pump is causing havoc
said i will try to solve this...
I ordered a new frost thermostat type 26TXE21 (part No 550516) for a Halstead Quattro Gold but I'm now not sure if the fitted stat is faulty or I have been supplied with a faulty stat.?
The original stat is shown normally closed on Halsteads functional flow diagram which I assumed was correct...
Hi all
I have a new grant vortex external oil boiler with a factory pre set 5 degree frost stat.My problem is that when the timer is set but off the boiler is firing up a lot of the time well above 5 degrees,in fact when the frost stat kicks in should it actually start up the central heating...
Hi all
Recently moved into a house with the above boiler in the garage. The previous owners had just had frost stats fitted, but the recent weather has meant the heating has been on all the time. To solve this i understand i need a pipe thermostat on the return wired in series with the frost...
Hi
I have noticed in the past few months thatmy heating is on when it shouldnt be. I know this will be too much information but several nights I have woken for a wee in the early hours and noticed my heating is on! Also I have just nipped home from work and again my heating is on. The timer...
KEMPY
Thread
appears
boiler
central heating system
frost
house
noticed
time
Due to the cold weather, i was thinking of leaving the frost protection function on overnight. i dont use the GCH of a night.
Will the frost protection work if the eco mode/no hot water setting is turned on.Also do i need to adjust the temparture setting on wireless themostat for frost free...
I have a warmflow boiler in the back garden and a horstmann programmer in the kitchen to control the heating/water which is linked to 3 zone valves.
When all zones are OFF, the boiler still periodically turns itself on and then off (wasting fuel in the process) as if I had the heating on...
m1439003
Thread
boiler
frost
itself
oil
thermostat
turning
warmflow
water
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