Will engineer need access to loft tank?

[Vicario]

My gas engineers are coming this week to replace a three-way valve which is allowing the boiler water through to the hot water cylinder when the CH is on. Apparently the valve should shut when the HW thermostat closes it, but it isn't shutting properly. The valve is in the airing cupboard next to the cylinder, but I've been told they'll need to 'drain down' in order to change the valve. To make things easier, I wonder if you can tell me:

1. How much water they will drain off?
2. Should I put the heating on the morning they are due? Or is it easier for them if it's cooled down overnight?
3. Will they need to access the feed and expansion tank in the loft?
4. Will they need to access the RCD/breaker for the heating system?

The third of these is the most important, as I'll need to do some serious decluttering before they arrive if they need to get to the tank. They will be able to shut off the CW feed as my stopcock is operating as it should.

Many thanks for any advice - and yes, I have bought lots of biscuits before you ask!

 

[Harry Bloomfield]

1. How much water they will drain off?
2. Should I put the heating on the morning they are due? Or is it easier for them if it's cooled down overnight?
3. Will they need to access the feed and expansion tank in the loft?
4. Will they need to access the RCD/breaker for the heating system?

1. That depends how they tackle it, less if they close all the upper floor radiator valves.
2. Best if cool/cold.
3. Possibly, but they could simply shut the stop tap, to achieve the same.
4. Yes, unless you have an isolation switch somewhere else.

 

[Vicario]

Thanks, Harry. There is a switch in the airing cupboard for the electrics - just checked. I'll clear a path to the tank in the loft just in case and get the ladder ready.

 

[kidgreen61]

My gas engineers are coming this week to replace a three-way valve which is allowing the boiler water through to the hot water cylinder when the CH is on. Apparently the valve should shut when the HW thermostat closes it, but it isn't shutting properly. The valve is in the airing cupboard next to the cylinder, but I've been told they'll need to 'drain down' in order to change the valve. To make things easier, I wonder if you can tell me:

1. How much water they will drain off?
2. Should I put the heating on the morning they are due? Or is it easier for them if it's cooled down overnight?
3. Will they need to access the feed and expansion tank in the loft?
4. Will they need to access the RCD/breaker for the heating system?

The third of these is the most important, as I'll need to do some serious decluttering before they arrive if they need to get to the tank. They will be able to shut off the CW feed as my stopcock is operating as it should.

Many thanks for any advice - and yes, I have bought lots of biscuits before you ask!

Do you have a dead body in the loft you don't want them to find?

 

[Vicario]

No, that's in the cellar.

 

[Harry Bloomfield]

No, that's in the cellar.

You are supposed to put them under the patio!