PAGE 45 of 79 VULCAIN OIL-FIRED HEATER
LAST UPDATED: JAN 22-2019 COPYRIGHT © SAMUEL JACKSON, INCORPORATED 2018 ALL RIGHTS RESERVED
Electrical Installation Notes
THREE PHASE SUPPLY TO HEATER:
Run 380VAC 50HZ power to the Heater
from a 30-ampere fusible disconnect switch or circuit breaker which you will provide.
CAT5E SHIELDED ETHERNET CABLE:
CAT5E shielded ethernet cable is used
when connecting the Heater to the optional Moisture Mirror X control. RJ-45 termination
is used for both cable ends. 330 feet (100 meters) is the recommended maximum cable
run length.
THERMOCOUPLE WIRING:
The following rules need to be followed when wiring
the thermocouple temperature sensors from the Thermocouple to the Heater control
panel. The signal from the temperature sensor is 4-20mA DC.
•
Always
use shielded, 2 conductor cable from the thermocouple to the control panel
terminal blocks. Terminate the shield only on the cabinet end. Do not use Type J
thermocouple wire for hookup.
•
Never
run the shielded sensor wires with the power wiring (including 120 VAC
control wires). You can run several shielded 4-20mA shielded wires together in the
same conduit with other wires marked sensitive on the external connection diagram.
WARNING!
FAN INTERLOCK:
The installing electrician must connect a fan run interlock signal of
120VAC (or 240VAC if 240VAC relay is supplied) to terminals FIR+/- on the Heater
Electrical Panel. This interlock is an extra safety device. It turns off the burner instantly
when the fan motor stop button is touched. A relay for this purpose is supplied on the
electrical panel of the Heater Unit. It is labeled FIR. The Heater’s PLC control system
will verify the presence of the fan interlock before permitting operation. If bypassed, the
Heater will signal this as an error later in operation.
Part No. 21708 & 21709 Type ‘J’
Thermocouple shown with 4-20mA
Transmitter in junction head.
Connect 4-20mA signal wires from one TC
to heater cabinet to terminals BM
+
, BM—,
and from the other TC to terminals AM+,
AM—.
Red
(-)
wire from each Thermocouple
junction goes to terminal 6, white
(+)
goes
to terminal 4.
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