Search results

Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

Search results

  1. V

    Unvented heating and hot water

    Hello all I'm installing an unvented vaillant unistor cylinder. The parts in the box includes a single two port valve. Thing is there is no 3rd party wiring diagram in the installation manual showing how to wire this two port valve into a y plan system. Has anyone got that diagram? I have...
  2. V

    Flexible boiler tails

    Hello All, A couple of years back I attended one of the phex exhibitions in Ally pally north London. There I came across a stand that were promoting flexible boiler pipe connections, flow, return, hot, cold, and gas. For the life of me I can not remember the product name of manufacturer. Has...
  3. V

    Water in customer gas pipe

    Hello All, I've been called out to a property where water has entered the gas pipe work within the property during installtion of a gas boiler. I have been asked to remove the water but have never done this before. The gas pipe is 22mm diameter rigid copper, runs for approximately 10m...
  4. V

    Water in customer gas pipe

    Hello All, I've been called out to a property where water has entered the gas pipe work within the property during installtion of a gas boiler. I have been asked to remove the water but have never done this before. The gas pipe is 22mm diameter rigid copper, runs for approximately 10m...
  5. V

    gravity hot water pump heating all vented bleeds weirdly!!!

    Hello All, I have a weird problem that has caught me off balance. About 2 years ago I power flushed an 8 rad system Customer call me a couple of weeks ago complaining that one tad is not warm I checked bottom of rad and found it warm so I opened bleed valve nothing came out. I suggested...
  6. V

    under floor heating and rads balancing

    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
  7. V

    british gas f2. AKA. potterton profile

    Hello all. I have a strange issue with the above boiler. It seems that after the external controls have stopped calling for heat the boiler will, only sometimes, a while later come on but the pump does not. This in turn is causing the over heat stat to activate. I have had a look at the...
  8. V

    volatile lockout green star 28 junior

    Hello. Has anyone come across this...see title I've checked the two temp sensors got 14 500 ohms on both. I Checked continuity of harness to fan all ok. I know there's more i should do but it's not clear in manual. What voltages to look for on the different wires to fan. Also what's...
  9. V

    balancing 21 rads ....over three floors

    Hello guys..how u all doing? :) 21 rads. 3 floors Ideal Mexico super. with flow and return for heating and flow and return for hot water. Pumped central heating..gravity hot water.. Any hints..tips on the best way to go about balancing such a large system? Top floor - 4 rads. Middle floor 8...
  10. V

    Under floor heating Pump change

    Hello Fellas, I need to change the pump on this under floor heating sytem which is connected up to the flow and return of boiler. Can you guys help me identify the parts in this system so i know what they do. i Do have a basic knowledge of uner floor heating systems but this one is no familiar...
  11. V

    Poor Hot water temp

    Hello guys, I am diagnosing the cause of low hot water temperature on a open vented system, with a floor standing heat only boiler and an Albion hot water cylinder. I have checked boiler performance which seems OK and other valves which seem to be OK. There is some sort of diverter valve which...
  12. V

    two port valve is it broken?

    i have been called out to inspect and repair a heat only boiler with external controls such a cylinder thermostat and a two port valve. Although the boiler have live power the pump does not run becuase the grey wire on the two port valve is not supplying any power. I checked to see if the valve...
  13. V

    potterton suprima 40L - wont reset

    hello guys, i have a potterton suprima 40 l displaying a flashing lockout red light. tried resettting and tried isolating and then switching mains back on but still the reset light blinks consistently. Any ideas or clues as to where to start on this one.. thanks DD368
  14. V

    Lag Lead System??? what is it?

    Hello chaps, i came across a 'lag lead' system. ie two heat only boilers working together to heat up a whole house and provide hot water via two indirect hot water cylinders. The boilers are keston 28. the lag lead is controlled via three switches which im not sure what they do. I.E one makes...
  15. V

    vaillant 630 r1

    hi all, called to a vaillant 630 r1, no display or power but there was 250v at pcb terminals!!!!! checked pcb and found 5v dc to earth on pcb. im thinking the display board in knackered? any other suggestions? if it is display board why would this have happened? cheers DD368
  16. V

    Vaillant Eco Max Pro - Old Style System Boiler

    Hello All Sorry to bother you mate but after much reading I came up with the following heating controls schematic. However a couple of items remain unclear. 1- how to wiring up this particular room stat 2- Confirmation on how to wire up the boiler dedicated pump earth , live and neutral...
    • Viper Gas
    • Thread
    • boiler system vaillant
    • Replies: 1
    • Forum: Boilers
  17. V

    wiring issues wcomax pro

    Hello a customers heating control system needs to be rewired with new programmer and mid position valve. Boiler is a Vaillant ecomaxpro Mid position valve is a Honeywell 5 wire The room stat is a three wirecylinder stat with the word imit on the case. It is unclear how to wire up the boiler...
  18. V

    telford copper cylinders - tristor main pressure thermal store

    Hi Guys, anyone come across one of these before? pics to come! Although it produces hot water very nicely the customer is complaining about a whistling noise coming from the top of the cylinder after it has been on for a couple of hours. I noted that the auto fill light was not blinking as it...
  19. V

    underfloor heating

    Hello chaps....been called out to investigate underfloor heating which works intermittently. The boiler works fine.the controls work fine but there seems to be a small loss of pressure. I want to check the pump size and manifold and tubes just not sure how to do that without breaking things...
  20. V

    potterton p[rofile 100e flame lift burner cut out

    Hello All, today has been one of those days! arrived to service a potterton profile 100e and found a lot of rust dust in boiler so decided to strip down, remove burner and clean thoroughly. i reassembled and fired up boiler. there was a fault evident in that 1- the boiler goes through start up...
Back
Top