User's Manual
Setup
16 3A2776D
Grounding
Ground the electrical connection properly according to
local codes.
Connect Power
Power must be connected by a qualified electrician.
Graco does not supply heater junction box power cords.
Use the following chart to determine which power cord
your system requires.
1. Open junction box cover.
2. Insert power cord through the large empty strain
relief in the bottom of the junction box.
3. Connect power cord as follows.
230V, 3 Phase Delta: Use a 5/32 in. (4 mm) hex key to
connect the three power leads to top terminals L1, L2,
and L3. Connect green to ground (GND).
380V, 3 Phase WYE: Use a 5/32 in. (4 mm) hex key to
connect the three power leads to the top terminals L1,
L2, and L3. Connect neutral to N. Connect green to
ground (GND).
4. Find the red power jumpers in the terminal blocks
supplied in a plastic bag in the junction box.
5.
For 380V, 3 Phase installations only,
use pliers to
install the red power jumpers into the terminal
blocks in the correct positions as shown in the fol-
lowing illustration. Push jumpers firmly into position.
6.
For 240V, 3 Phase installations only,
use pliers to
install the red power jumpers into the terminal
blocks in the correct position as shown in the follow-
ing illustration. Push jumpers firmly into position.
7. Close junction box cover.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. Electric or static
sparking can cause fumes to ignite or explode.
Improper grounding can cause electric shock.
Grounding provides an escape wire for the electric
current.
Power Cord Requirements
System
Voltage Cord Specification AWG (mm
2
)
240V, 3 PH 6 (13.3) 3 wire + ground
380V, 3 PH 6 (13.3) 4 wire + ground
1L1
L1 L2 L3N
ti8612a1
F
IG
. 12
F
IG
. 13
7L4
1L1
N L1 L2 L3
ti8613a1