13
®
Wiring
CAUTION: Disconnect the power supply before beginning installation to prevent electrical
shock, equipment and/or control damage. More than one power supply disconnect may be
involved.
Wiring must comply with all applicable codes, ordinances and regulations.
Wiring, where required, must comply with NEC, Class 1 (Line Voltage) wiring.
Loads connected to the Controller must not exceed those listed in the specifications as shown
in this manual.
All external controls connected to this unit must be listed or recognized by authorities who
have jurisdiction for the specific purpose for which they are used.
Maximum connected load must not exceed 2000VA
The controller/wiring base MUST be mounted within a burner cabinet or similar enclosure and
MUST be earthed to the overall enclosure to ensure safe and reliable operation.
The clamping bars on the control unit perform only an earth function and do not provide strain relief,
the signal cable shields only connect at the clamping bar. Secure all cables carried in conduit at both
ends using a suitable anchorage method in the cabinet.
CAUTION: HAZARDOUS VOLTAGES MUST BE ISOLATED BEFORE SERVICE
WORK IS CARRIED OUT.
Use multiple conductor braid shielded cable similar to Belden 8735 for 3 conductor application, or
Belden 9939 (3 conductor), 9940 (4 conductor), or 9942 (6 conductor).
For UL approval, all single conductor wiring should be TEW, AWM or MTW within the cabinet.
Conductors to be pulled through conduit should be THHN or TFFN. The maximum wire size that
the wiring base will accept is a single 16 AWG. Should multiple conductors be required on a single
terminal, an interposing terminal strip will be required.
For multi-conductor shielded requirements, use multiple conductor braid shielded cable similar to
Belden 8735 for 3 conductor application, or Belden 9939 (3 conductor), 9940 (4 conductor), 9942 (6
conductor).
For CE approval, all cabling operating above 50V must be multi-strand single core PVC insulated
16/0.2mm and should meet the requirements of I.E.C. 227 or I.E.C. 225.
Do not use a green/yellow conductor for any purpose other than earth.
To comply with EMC requirements, wire the control unit using the specified cable sizes and shield
connections. Clamp all signal cable shields to earth using the clamping bars provided on the control
unit. Connect all cable shields to earth at the control unit end only, with the exception of the cables
that connect the display and pressure sensors.
The equipment described in this manual has been tested for compliance to the UL Standards and CE
Directives listed in the section headed “approvals”.
However, once connected to a burner and other associated controls, it is the responsibility of the
installer to ensure the complete installation meets the local authority’s requirements of the UL Stan-
dard and/or CE Directives relevant to the particular installation.
