Roberts Gorden HE15UT, HE20ST, HE50DL, HE45UT Typical External Wiring Diagram Linear or U-Tube

BLACKHEAT® HE INSTALLATION OPERATION AND SERVICE MANUAL

SECTION 13: WIRING

DANGER

Electrical Shock Hazard

Disconnect electric before service.

Heater must be properly grounded.

Failure to follow these instructions can result in death or electrical shock.

Connect to the electrical supply using the power wire coming out of the wire gland via a locally mounted IP55 protected double pole fused switch having a minimum disconnection of 3 mm on each pole. This switch should be fused to 3 amps. There are no control connections in the standard burner. Control is affected by interruption of the main power inlet. See Page 54, Section 13.1 through Page 55, Section 13.4 for the external wiring details for the single-burner, double linear and multiburner heater systems.

If the IP55 protected fan MB 56 2BM is used with a single burner (linear or U-tube), it must be wired as shown on Page 55, Section 13.2.

The fan must be protected with a 3 A fuse.

If the heater lockout indication is required, a BLACKHEAT® HE lockout indicator package (P/N 03360008) must be installed in every burner. Drill a 20.5

mmhole to fit the wire gland. See Page 56, Section 13.5 for wire connections. Remove the taps from the power wire.

Description	Part Number
BLACKHEAT® HE Lockout Indicator Package	03360008
Cable Gland	U169
Power Wire	91300010
Blue Wire	91300011
Brown Wire	91300012

All wiring must comply with current wiring regulations and any local regulations which may apply. Always switch off the supply to the burner before removing the burner side panel.

13.1 Typical External Wiring Diagram (Linear or U-Tube)

L

Controller or

L

N Earth

230 V

N

Thermostat

1 Ø

Earth

50 Hz

Brown

Blue

Green/Yellow

Brown

Blue

Green/Yellow

Brown

Blue

Green/Yellow

4 Wire Cable

4 Wire Cable

4 Wire Cable

Burner 1

Black

Burner 2

Black

Burner 3

Black

Blue

Blue

Blue

Green

Green

Green

{

{

{

Fan 1

Fan 2

Fan 3

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