Honeywell bypass valve on suprima

[Readingplumber]

Hi,

I have just been updating a heating system which previously had a gatevalve as a bypass with a honeywell automatic bypass -

I cant seem to find any instructions anywhere for the suprima 50 -

To set the valve it needs the minimum flow rate for the boiler?

Can anyone help? The pump being used is a 15/60 -

The valve comes factory set - have people found that works ok in most cases?

Thanks

 

[doitmyself]

9 litres per minute.

 

[Blackcatgas]

Hi,

I have just been updating a heating system which previously had a gatevalve as a bypass with a honeywell automatic bypass -

I cant seem to find any instructions anywhere for the suprima 50 -

To set the valve it needs the minimum flow rate for the boiler?

Can anyone help? The pump being used is a 15/60 -

The valve comes factory set - have people found that works ok in most cases?

Thanks

Btw is it an S or a y plan? I dont bother putting a bypass on a y plan.

 

[Readingplumber]

Thanks - no it was for a s plan -

I have done some calcs incase anyone else comes across this -

If we assume the pump is a 15/50 and a suprima (9 litres min flow ) used and on pump speed 3 then the bypass needs to be set to 0.35bar

if the same but a 15/60 pump is used then it willl be set to 0.45bar

Thanks

 

[doitmyself]

If we assume the pump is a 15/50 and a suprima (9 litres min flow ) used and on pump speed 3 then the bypass needs to be set to 0.35bar

A 15/50 on speed 3 with a flow of 9 litre/min (540kg/hr) has a head of 400 mbar. This means a setting of 0.3 on the valve

 

[Plucky]

A 15/50 on speed 3 with a flow of 9 litre/min (540kg/hr) has a head of 400 mbar. This means a setting of 0.3 on the valve

Do you have any reference to this?

 

[doitmyself]

Do you have any reference to this?

Not easily. I worked it out by plotting the data on the 15/50 pump chart and the DU144 valve chart.

9 litre/min = 0.15 litres/sec = 540 litres/hr =540kg/hr