Harman Martin Exterior Wash 300 Series, User Manual

Page: 12 / 40

12 Martin
®
Exterior Wash
TM
300 Series User Manual
Installing a diffuser
Optional diffuser lenses are available from Martin to modify the
beam width (see table below and ‘Accessories’ on page 35 for
details).
The diffuser is held in place either by the included trim ring or, if
installed, by a snoot or honeycomb louver accessory.
Located close to the edge of the diffuser is a marking that gives
the diffuser’s nominal beam angle and indicates which side of
the diffuser must face outwards (see Figure 3). Note that the
marking is partially hidden under the diffuser’s silicone gasket.
Note that the nominal diffuser beam angle is for reference only.
The effective beam angle given in the table below is the beam
(half-peak) angle that you will actually obtain, depending on
which fixture you install the diffuser on.
Diffuser kit Part number
Nominal diffuser
beam angle
Effective beam
angle, 310
model Effective beam
angle, 300 &
320 models
None - - 11° 7.5°
Narrow 91610155 10° 13° 11.5°
Medium 91610156 20° 27° 25°
Wide 91610157 40° 43° 41°
Very Wide 91610158 60° 62° 59°
Asymmetric 91610159 60° x 10° 66° x 15° 65° x 14.5°
Exterior Wash 300 Series Diffuser Kits
To install an optional diffuser lens:
1. Shut down power to the fixture and allow it to cool.
2. See Figure 4 below. Position the diffuser lens A over the front of the fixture with the labelled, smooth
side of the lens and the grooves in the silicone seal facing out, towards the front of the fixture.
3. Rotate the diffuser lens so that the drainage channel B in the seal lines up with the drainage channel
at the bottom of the ring on the front of the fixture.
4. Press the diffuser lens gasket firmly into the recess in the ring on the front of the fixture.
5. Either place a trim ring C over the diffuser and fasten it securely with the supplied screws or install a
honeycomb louver or snoot as described in the next sections.
Figure 4. Diffuser lens installation
A
B
C
Figure 3. Diffuser marking