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valve

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  1. V

    Y plan heating system. Boiler Change Problem.

    Hi people. Here's one for you. Problem with a boiler change. Engineers changed an Ideal FF250 classic system boiler, to an Ariston Evo System boiler. (System boiler to system boiler) FF250 classic is 3 wire boiler and all that there is a 3 core flex which went into L N E (L being switched...
  2. sythai

    Underfloor heating... newbie

    Evening my chaps... Well my favourite subject has sprung up once again - central heating :rolleyes2: On a job where the plumber has piped up 2 underfloor heating zones, never wired up one of these before... but feeling quite confident. It isn't my usual plumber I work with this chap seems...
  3. K

    Central heating 3port valve?

    I was at a job today where there was a central heating comprising of 3port valve, what i couldn't understand was why is there HW off connection to be used in the programmer and also a third connection to be used on the tank stat, also this system also wanted a 2port valve incorporated into the...
  4. B

    Frost stat installation

    Can anyone help me I'm trying to wire up a new heating system any wiring diagram would be great. System is: rhino savana condensing system boiler, megaflow cylinder, frost stat, danfoss FP programmer, zone valve for heating and same for water. many thanks Bluerob
  5. A

    Valve cable

    Hi guys, not done much central heating work but my dad has asked me to wire up his new system and it has two heating valves and one hot water on an s plan but one of the valves cables are short and don't reach the wiring control centre. I have tried to source some cable like the cable on the...
  6. sythai

    Combi boiler with 2port valve?

    Evening Chaps... (sorry I have a very basic knowledge of heating controls) Part of a job I have coming up is re-siting all the boiler electrics up to the loft ( loft conversion) Combi boiler, but also has a 2 port valve controlling heating via programmer? For some reason I always assumed a...
  7. E

    Heating system with only one two port valve. Is this dangerous ...

    Came across a heating system which had only 1x 2 port valve which was used only for the heating. There was another valve which had been disconnected from the mains but set in open position. I assume this was for the hot water. Then From the junction box there's one three core going up to 2 x...
  8. K

    motorized valve and pump wiring assistance needed

    Hi guys i have 2 honeywell programer and 4 wireless honeywell themostat and 4 motorised valves and 4 pumps (not yet installed) i need it so that when i call for water the vaule opens and the pump turns on. i have wired it using 5core .75 in the following way but still seem to be having...
  9. 9

    honeywell zone valve

    Hi How do you fault find on a zone valve to see if its working. What are the dead test that can be done on them to prove the micro sw is working. Also just any test really Not out time long so i think this is a useful thing to know when working on heating systems
  10. J

    Gas Valve problem

    Hello All One of the buildings I look after has a gas booster valve for the boilers, the boilers are located on the roof the gas booster is where the gas intake is. The building and all the plant is around 30 years old and is in pieces. The problem is every morning the gas valve has...
  11. S

    W/c fill valve washer

    Hi all, just replaced the washer on my full valve. All works ok but is there a particular way these should be fitted due to the cross/nipple seen on the picture? I have taken pictures of both sides. Hope this makes sense!
  12. i=p/u

    Heating system

    Looking at a heating system tonight, grasslin 24 hr time clock and 3 Zone valves ,down stairs heating , upstairs heating and hot water. Upstairs heating and hot water not firing boiler. But valves are lit up. So when I turn upstairs heating stat down the valve light goes out but you don't...
  13. F

    Safety zone valve to cylinder

    Help Is there anybody out there that can point me in the write direction for a wiring diagram for a cylinder safety zone valve, i am stuggling to find any diagrams on this, i find it hard to belive that this saftey valve system is hard to find as this is apparently very important to stop a...
  14. F

    s plan central heating 3 zone valves

    help!! I am working with a made plumber, he has installed a S PLAN SYSTEM, but with a diverter valve ( witch is a two port eebszone valve ) near the cylinder. so in total there are 3 zone valves apparently this gets wired to the cylinder stat??? cant find any wiring diagrams to follow, they all...
  15. G

    Help Wiring Honeywell Rf2 Pk3 Controls To Existing System Boiler

    Hi guys & gals, Wonder if anyone can help with my problem Fitted a new honeywell RF2 pack 3 Heating controller with wireless room stat & cylinder stat for my neighbour a few days ago, which replaced a honeywell ST699B programmer. The boiler is a Ideal Mexico Super 2 RS50 which i believe is...
  16. G

    Hydraulic Pressure Valve Controlled By 4-20mA Signal

    Hi All, I want to replace a manual hydraulic pressure valve with a valve that can be controlled with a 4-20mA signal. The pressure will be monitored by a gauge which will correct the pressure if necessary. Has anyone ever seen such a valve and can recommend a model/make? Gerard
  17. P

    mid position valve issue

    HI all I have a problem with a mid position valve that wont move into the heating only position after being in the mid position (i.e. when the water and heating are calling, the water turns off and the valve wont move to the heating only position). The wiring is correct and i have verified it...
  18. yellowvanman

    Central heating wiring

    I've got to wire up a central heating system: Boiler has integral pump. 3 circuits: Heating with own valve and pump Towel rails with own valve and pump Hot water with own valve. Because the heating and towel rail have their own pump I have to somehow switch them on individually without...
  19. L

    Underfloor Heating / CH / HW - HELP!

    Good Afternoon, A plumber has approached me with a slightly odd system which has left me quite stumped. The System is as follows: Boiler: Ravensheat Condensing fanned combi CSI 85 A (T) 1 x 2way valve CH 1 x 2way valve HW 1 x 2way valve UF I have been told that the: HW upstairs /CH/UF is to...
  20. S

    Heating on when timer off?

    Up till now my heating has been working fine, on/off with timer, room-stat and tank-stat etc. The other day the central heating mcb tripped and after resetting the heating is constantly on even when the timer says off. Lowering the room-stat temp does still turn the heating off. Has anyone had...

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