wheelock XB16 INSTALLATION INSTRUCTIONS

Technical Manual for the

Strobe – XB16

Please note that ever y care has been taken to ensure the accuracy of our
technical manual. We do not, however, accept responsibility for damage,
loss or expense resulting from any error or omission. We reserve the right
to make alterations in line with technical advances and industry standards.

© MEDC 2004 11/04

11/04 © MEDC 2004

1. INTRODUCTION

These certified strobes have been designed for use in potentially explosive

atmospheres and harsh environmental conditions. The glass reinforced
polyester enclosures are suitable for use offshore or onshore, where light
weight combined with corrosion resistance is required.

The strobe housing is manufactured completely from a U.V. stable, glass

reinforced polyester, while the lens is manufactured from a U.V. stable
polycarbonate. Stainless steel screws are incorporated ensuring a totally
corrosion free product.

Units can be painted to customer specification and supplied with

identification labels.

2. INSTALLATION

General

When installing and operating explosion-protected equipment,

requirements for selection, installation and operation should be referred
to eg. IEE Wiring Regulations and the ‘National Electrical Code’ in North
America. Additional national and/or local requirements may apply.

Ensure that all nuts, bolts and fixings are secure.

Ensure that only the correct listed or certified stopping plugs are used to

blank off unused gland entry points and that the NEMA/IP rating of the
unit is maintained.

Mounting:
The strobe can be mounted on a ½” pipe and may be mounted in any

position. To mount the strobe, fully thread onto end of pipe and secure with
the setscrew supplied.

UL1971 Mounting details

The UL1971 compliant versions of this strobe are designed for hearing

impaired applications. These require a minimum 24” (610mm) spacing to
ceiling level. MEDC recommend that the strobe be mounted in the centre of
the room, with the lens pointing downwards. Alternatively the strobe may

© MEDC 2004 11/04

be wall mounted provided that it is placed at least 24” (610mm) below
the ceiling level with the lens pointing away from the wall. Any deviation
from this requirement may result in diminished effectiveness of the strobe.
Alternative installation orientations or positions should only be performed
with the approval of the authority having jurisdiction. Please refer to figure
2 for the light dispersion pattern of the strobe.

Cable Termination

CAUTION: Before removing the cover assembly, ensure that the power to

the unit is isolated.

Unscrew the 3 captive screws holding the lens assembly to the base. Pull
the lens away from the base. Remove to gain access to the interior.

Cable termination should be in accordance with specifications applying
to the required application. MEDC recommends that all cables and cores
should be correctly identified. Please refer to the wiring diagram provided
with the product.

Ensure that only the correct listed or certified cable glands are used and
that the assembly is shrouded and correctly earthed.

All cable glands should be of an equivalent NEMA/IP rating to that of the
strobe and integrated with the unit such that this rating is maintained

The internal earth terminal, where fitted, must be used for the equipment
grounding connection and the external terminal is for a supplementary
bonding connection where local codes or authorities permit or require
such a connection.

Once termination is complete, carefully place the lens assembly back onto
the base, avoiding damage to the mating surfaces. Evenly tighten the 3
cover screws. Ensure the lens o-ring is correctly seated in it’s groove during
re-assembly.

3. OPERATION & RATINGS

The operating voltage of the unit is stated on the unit label.
The beacon can be powered directly or initiated by a 24Vdc remote

supply if requested when ordered.