Date post: | 24-Dec-2015 |
Category: |
Documents |
Upload: | kristopher-brooks |
View: | 235 times |
Download: | 2 times |
Schematic to Pictorial
Page A4 schematic
to
Page A4a pictorial
Take page A4 and A4a out of your ‘Student
Handout Packet’ and lay them side by side.
You will follow the schematic on page A4
and draw wires, using your pencil, on page
A4a to complete the circuit. Absolutely no
pens allowed.
Start on page A4 at the incoming power. Page A4
shows the black wire going to the transformer
primary wire and it will be the black wire on the
primary. So go to page A4a and draw a wire from
the fused disconnect to the transformer primary.
See next 2 slides for help and to check your work.
RW
Continue from this junction point at the transformer
and go to terminal 1 of the fan relay. See next 2
slides for help and to check your work.
RW
Continue from terminal 3 of the fan relay and go to
the motors ‘B’ wire. See next 2 slides for help and
to check your work.
RW
Now go back to terminal 2 of the fan relay and go
to the fan switch. You will notice that the fan
switch is marked ‘LINE’ and ‘LOAD.’ You will bring
power to the ‘LINE’ terminal. See next 2 slides for
help and to check your work.
RW
Continue by going out of the fan switch ‘LOAD’
terminal and go to the motors ‘R’ wire. See next 2
slides for help and to check your work.
RW
Continue by going from the motors ‘W’ wire and go
to the ‘W’ wire of the transformer. See next 2 slides
for help and to check your work.
RW
Continue by going from ‘W’ connection at the
transformer back to L2 at the disconnect. See
next 2 slides for help and to check your work.
RW
You have completed the line voltage (120v) circuit
for this schematic. Now move onto the low voltage
circuit.
Start at the low voltage side of the transformer
(secondary). You will notice that one terminal is
marked ‘P’ and the other terminal is marked ‘C.’
The ‘P’ terminal would be for power and the ‘C’
terminal would be for common.
RW
P C
Draw a wire, using your pencil, from the ‘P’
terminal of the secondary of the transformer to
terminal ‘4’ of the terminal strip. See next 2 slides
for help and to check your work.
RW
P C
Continue from terminal strip ‘4’ terminal and go to
terminal ‘R’ of the thermostat. See next 2 slides
for help and to check your work.
RW
P C
Continue from terminal ‘W’ of the thermostat to
terminal ‘W’ of the terminal strip. See next 2 slides
for help and to check your work.
RW
P C
Continue from terminal ‘W’ of the terminal strip to
the ‘LINE’ side of the LIMIT. See next 2 slides for
help and to check your work.
RW
P C
Continue from the ‘LOAD’ side of the LIMIT and
arrive at the Pilot Switch. You will notice that I am
coming into the right of the switch. Since this is a
series connection it would not matter which way I
go. And it will help to minimize confusion. See
next 2 slides for help and to check your work.
RW
P C
Continue from the Pilot Switch onto the gas valve.
See next 2 slides for help and to check your work.
RW
P C
Continue from the gas valve to terminal ‘X’ of the
terminal strip. See next 2 slides for help and to
check your work.
RW
P C
Finish the low voltage circuit by going from
terminal ‘X’ of the terminal strip to the ‘C’ terminal
on the transformer. See next 2 slides for help and
to check your work.
RW
P C
You have now finished taking a schematic and
used it to wire the pictorial. The same process
would be applied to wire an actual piece of
equipment if you had to. This process is also used
to trace the wire on a piece of equipment.
The End