N
nez_pottage
I’m looking to self install a Nest Learning Thermostat on my Worcester Bosch 280 boiler.
The wiring looks straight forward, but I just wanted to sense check before I go ahead.
The boiler doesn’t have a stat currently, so on the stat section has an unused N connection. 1 & 2 are jumpered (2 shows 240v, 1 is 0v), a 3 is unsued and unmarked, and 4 is unused and marked Frost Stat.
So I assume I can run a 4 core to the Nest Heatlink, and wire up as follows.
N from boiler to N on heatlink
2 (240v Live) from boiler to L on heatlink, and then jumper L on the heatlink to common / 2 (do I need to run a 3A inline fuse or not? On the jumper cable)
1 from boiler to 3 (relay open) on the Heatlink
Earth (needed or not? As Nest stat will be wireless)
Is that pretty much it, bar testing, tidying, and testing again?
The wiring looks straight forward, but I just wanted to sense check before I go ahead.
The boiler doesn’t have a stat currently, so on the stat section has an unused N connection. 1 & 2 are jumpered (2 shows 240v, 1 is 0v), a 3 is unsued and unmarked, and 4 is unused and marked Frost Stat.
So I assume I can run a 4 core to the Nest Heatlink, and wire up as follows.
N from boiler to N on heatlink
2 (240v Live) from boiler to L on heatlink, and then jumper L on the heatlink to common / 2 (do I need to run a 3A inline fuse or not? On the jumper cable)
1 from boiler to 3 (relay open) on the Heatlink
Earth (needed or not? As Nest stat will be wireless)
Is that pretty much it, bar testing, tidying, and testing again?
