Schematic Symbol I Am Not Familiar With: Anyone Know Perhaps ?

[Bob]

Hello,

Have a forced hot water system for home heating that uses the typical 2
wire Honeywell thermostat to control a Honeywell RA832A switching relay.

The switching relay closes the circuit to the thermopile, as well as
closing the 110 V circuit for the water circulator.

There is also a transformer that provides 24 V for the thermostat and
the relay.

Question:

Guess I'm dating myself somewhat here, but there is a symbol that I am
not familiar with in the instruction sheet for it.

The secondary of the transformer (going to the thermostat) shows what is
similar tho the common resistor symbol of
3 points up, and 3 points down from the baseline.

But this symbol has only 1 point up, 1 point down, and then the return
to the baseline.

I don't think it is meant to be a resistor.

It is drawn close to the relay contact symbols.

Could it be meant to be the coil for the relay, perhaps ?

Or,... ?

Thanks,
Bob

 

[Tom Biasi]

Hello,

Have a forced hot water system for home heating that uses the typical 2
wire Honeywell thermostat to control a Honeywell RA832A switching relay.

The switching relay closes the circuit to the thermopile, as well as
closing the 110 V circuit for the water circulator.

There is also a transformer that provides 24 V for the thermostat and
the relay.

Question:

Guess I'm dating myself somewhat here, but there is a symbol that I am
not familiar with in the instruction sheet for it.

The secondary of the transformer (going to the thermostat) shows what is
similar tho the common resistor symbol of
3 points up, and 3 points down from the baseline.

But this symbol has only 1 point up, 1 point down, and then the return
to the baseline.

I don't think it is meant to be a resistor.

It is drawn close to the relay contact symbols.

Could it be meant to be the coil for the relay, perhaps ?

Or,... ?

Thanks,
Bob

Without seeing it Bob it's difficult to say. Often relay coils are drawn
using just a rectangle with a lead at each end. Can you see where the
leads go? Is there a diode across the leads?

Tom

 

[J.B. Wood]

Hello,

Have a forced hot water system for home heating that uses the typical 2
wire Honeywell thermostat to control a Honeywell RA832A switching relay.

The switching relay closes the circuit to the thermopile, as well as
closing the 110 V circuit for the water circulator.

There is also a transformer that provides 24 V for the thermostat and
the relay.

Question:

Guess I'm dating myself somewhat here, but there is a symbol that I am
not familiar with in the instruction sheet for it.

The secondary of the transformer (going to the thermostat) shows what is
similar tho the common resistor symbol of
3 points up, and 3 points down from the baseline.

But this symbol has only 1 point up, 1 point down, and then the return
to the baseline.

I don't think it is meant to be a resistor.

It is drawn close to the relay contact symbols.

Could it be meant to be the coil for the relay, perhaps ?

Or,... ?

Thanks,
Bob

Hello, and just a thought: After reading and understanding (I think)
schematics of radios, TVs, and audio components for years, I'm still
often confused by the schematic symbols for wiring and electric
components as used by the automotive industry. And then there's those
"single-point" diagrams used by electric power utilities to denote
3-phase AC power generation and distribution. Sincerely,

 

[Don Kelly]

Hello, and just a thought: After reading and understanding (I think)
schematics of radios, TVs, and audio components for years, I'm still
often confused by the schematic symbols for wiring and electric
components as used by the automotive industry. And then there's those
"single-point" diagrams used by electric power utilities to denote
3-phase AC power generation and distribution. Sincerely,

The utility single line diagrams are simple-the needed information is
there. What isn't simple is some of the automotive wiring (including
the logic in some cases such as in an old VW van).This is a world of its
own.

 

[Shaun]

"Bob" wrote in message
Hello,

Have a forced hot water system for home heating that uses the typical 2
wire Honeywell thermostat to control a Honeywell RA832A switching relay.

The switching relay closes the circuit to the thermopile, as well as
closing the 110 V circuit for the water circulator.

There is also a transformer that provides 24 V for the thermostat and
the relay.

Question:

Guess I'm dating myself somewhat here, but there is a symbol that I am
not familiar with in the instruction sheet for it.

The secondary of the transformer (going to the thermostat) shows what is
similar tho the common resistor symbol of
3 points up, and 3 points down from the baseline.

But this symbol has only 1 point up, 1 point down, and then the return
to the baseline.

I don't think it is meant to be a resistor.

It is drawn close to the relay contact symbols.

Could it be meant to be the coil for the relay, perhaps ?

Or,... ?

Thanks,
Bob



I is probably a symbol from those damn aliens. They were getting into
everything back then!

 

[Don Kelly]

In many drawings it indicates an unspecified distance.
CP

In other words- we have need of some Rosetta Stone where, depending on
the language, there is a valid interpretation.
The problem is in the recognition of the originating language and the
receiving language. If one or the other is unknown we have Babel.
Sounds academic/political/advertising-- etc.