Drayton Wiser oil heating

Joined
19 Sep 2006
Messages
201
Reaction score
6
Location
Aberdeen
Country
United Kingdom
I'm considering adding the Drayton wiser system to replace the typical programmer with manual thermostat \ trv set up but someone mentioned on a different post that oil boilers tend to pull more current than gas boilers and cited this as a reason for premature failure of a programmer.

The switching capacity of the hub is 2 amps. The fuse protecting boiler, valves and pump is 5 amps.

My question is what does the hub or programmer actually switch? Is it just power to a valve which in turn switches the rest of does it see the full load current of the system.

It's a boulter camray 5 with Ch pump and 2 motorised valves. I asked Drayton and they said it was fine with oil fired systems but switching capacity was 2 amps.
 
Sponsored Links
Joined
10 Mar 2007
Messages
10,358
Reaction score
2,117
Location
Poole, Dorset
Country
United Kingdom
On most, the programmer or thermostat switches power to the valve motor, and when open a switch in the valve signals the boiler to operate, or on some boilers switches the actual power for the boiler, pump, etc.

However the 5A fuse means nothing - what matters is the actual current for the boiler and other devices. It won't be anywhere near 5A.
 
Joined
15 Aug 2010
Messages
24,940
Reaction score
11,136
Location
Livingston
Country
United Kingdom
The drayton will be fine with your system it is only powering the motors on the valves the rest is controlled by the end switches on the valves
 
Sponsored Links
Top