Identifying parts

R

Roberto2019

Joined
6 Aug 2019
Messages
56
Reaction score
1
Country
United Kingdom
I have just dismantled my old oil boiler (22 yrs old) and electrics that go along with it. A new one will be installed later in the year, and moved to a different location due to building works.

In doing so, there are a couple of components in the electrics that I have no idea what they are for.

The system is gravity hot water, plus pump for central heating.

There is one room thermostat, and a thermostat on the hot water tank, which is connected to a single motorised valve to control the hot water.

The timer is a Randall/Danfoss 103. All very simple.

There are two other components that I have no idea what they do:

1. Next to the timer there is what looks like a room thermostat, but it has the face plate blanked off so you cant change it. Inside, you can see it does a have wheel you can turn with different temperatures written on it.

2. There is a box (very old), with a solenoid in it.

I had assumed that both of these were disconnected and were just relics from an old iteration of the system - but they are in fact all connected in..... any idea what they are for?

Many thanks
 
Just done some googling.... I think that could well be what No.1 is, albeit a very old one. Thank you.

As for No.2 - I wrote solenoid, but actually I think actually it could be some kind of relay switch? It has a clear case and you can see copper coils in it.... any ideas?
 
Roberto2019 said:
Just done some googling.... I think that could well be what No.1 is, albeit a very old one. Thank you.

As for No.2 - I wrote solenoid, but actually I think actually it could be some kind of relay switch? It has a clear case and you can see copper coils in it.... any ideas?
Click to expand...
The grey box with the relay in it is more than likely an old Sunvic/Satchwell wiring centre.
 
The relay in the box has "Schrack MT206203".... is that a wiring centre?

What is it actually doing if so?
 
Normally relays are used to switch a bigger load , in a car, the relay takes a say a 1 amp circuit from a switch and then when activated the internal switch inside the relay closes and the rear 10amp demister circuit is switched on. Its a way of using a small current to switch a bigger one, saves wiring the car up with thick wire....
 
You must log in or register to reply here.
Back
Top