2
INSTALLATION
Location —
Germicidal lamps are installed in the evaporator
section where they will have contact with the air stream and
moist surfaces. Refer to the installation locations provided in
Fig. 1-4. The stainless steel power supply section of the acces-
sory is installed on the outside of the unit and is waterproof.
See Fig. 5 for accessory dimensions.
Make sure site can be supplied with the necessary power re-
quirements. Ensure that there is adequate clearance for service.
Installation (48/50HJ,TJ015-028 Units and
50HJQ014, 016 Units) —
Perform the following proce-
dure to install the germicidal lamp:
1. Turn off all power to unit.
2. Install reflective material (field-supplied) in installa-
tion location if desired. Reflecting ultra-violet light
energy is recommended to enhance performance and
reduce shadows. Lining the installation area with alu-
minum or aluminum foil allows light energy to reflect
instead of being absorbed, increasing the effectiveness
of the germicidal lamp.
3. Ultra violet light may damage certain plastics and
exposed non-UVC (Ultra Violet Radiation, C-Band)
protected wires. (Drain pans will not be damaged.)
Wrap exposed plastic and wiring with aluminum tape
or use metal conduit.
4. Mount field-provided light-switch disconnect switch
on unit hood. See Fig. 1, 6, and 7. Disconnect switch
should have a waterproof housing.
5. A separate source power supply must be routed to the
accessory germicidal lamp’s unit mounted disconnect
switch per applicable codes. Unit wiring and control
box connections should not be used. Refer to the Pack-
age Usage table for electrical characteristics of power
supply. Power source must be a suitable fused,
grounded, protected source with the correct voltage.
Other voltages will permanently damage the germi-
cidal lamp.
Wire per Table 1.
Table 1 — Wiring Recommendations
6. Any hinged potential access panel or door to the instal-
lation area must be interlocked with the accessory
power source to turn the lamp off if the door is opened.
Access doors should be labelled with appropriate
warnings about exposure to ultra-violet light.
A pushbutton door interlock switch (Carrier Part No.
HR54ZA101) is required on all hinged access panels.
Use a field-fabricated and -installed bracket to mount
the door interlock switch to the unit corner post. See
Fig. 6 and 8. Use insulated sleeve terminals for con-
nection to interlock switch. The pushbutton door inter-
lock switch is not required on non-hinged access
panels. Door interlock switch should be located on the
side of the access door that opens. Locate the switch
near the top of the door so it will not be in a location
where it interferes with maintenance or service.
Run wiring into disconnect switch. Door interlock
switch should be wired into the power (Black) lead,
between the disconnect switch and the germicidal
lamp, to break power to the accessory when the door is
opened.
7. Access doors may be equipped with a glass or Lexan
®
window to view lamps.
A glass or Lexan window will not pass ultra-violet
rays and is not a safety risk.
8. Using the accessory as a template, mark two 1-in.
insertion holes on the mounting surface. Mark 8 holes
for accessory mounting. See Fig. 1 and 5 for location.
The 1-in. holes are used for electrical connections and
the germicidal bulb. See Fig. 5.
WIRING
COLOR
Power
Black
Neutral
White
Ground
Green
BULB
1.50
UVC DISCONNECT
SWITCH
36.00
ECONOMIZER
HOOD
TYP
5.00
30.00
TYP
UNIT TOP
COVER
TYPICAL
INDOOR
FAN SECTION
(TOP VIEW)
STRAIN
RELIEF
BUSHING
REQ.
7/8"
HOLE
7/8" HOLE
(REQUIRED
FOR
CONDUIT
ONLY)
BULB
Fig. 1 — Germicidal Lamps Installation Location — 48/50HJ,TJ015-028 and 50HJQ014 and 016 Units
NOTES:
1. Dimensions are in inches.
2. Dimensions are from out-
side edges.
3. Wiring is shown with
ROMEX cable. If conduit is
used, two holes in bracket
are used.
