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• Priority 3 and 4 have connections for one contactor only.
• Four LEDs, located on the load shed module, will indicate when
a load priority level is enabled.
• Any loads, including central air conditioners, can be controlled
via a contactor that must be purchased separately. Up to four
contactors can be controlled by the load shed module. The LSM
supplies the 120 Vac to energize each contactor coil.
• Generator overload condition is determined by generator fre-
quency. Loads are shed when the frequency is <58Hz for 3
seconds or <50Hz for ½ Second (For 60Hz).
The LSM has a Test button which forces the unit to act as if an
overload has occurred. This button operates even when the trans-
fer signal is inactive.
Figure 1.2 — Load Shed Module
Air Conditioner Connections:
Up to two A/Cs can be
controlled via low voltage
thermostat wires
Status LEDs: Shows
which loads are
currently allowed
to run.
Load Connections: Up to four loads of any type can
be controlled via these connections. (A separate
contactor module is required.)
1.4
TRANSFER SWITCH DATA
DECAL
A DATA DECAL is permanently affixed to the transfer switch enclo-
sure. Use this transfer switch only with the specific limits shown
on the DATA DECAL and on other decals and labels that may be
affixed to the switch. This will prevent damage to equipment and
property.
When requesting information or ordering parts for this equipment,
make sure to include all information from the DATA DECAL.
Record the Model and Serial numbers in the space provided below
for future reference.
MODEL #
SERIAL #
0 Ground
0 Ground
194 +12V
194 +12V
T1
T1
23 Transfer
23 Transfer
NEUTRAL
NEUTRAL
AIR 1
AIR 1
CONTACTOR
CONTACTOR
1
1
AIR 2
AIR 2
CONTACTOR
CONTACTOR
2
2
Priority 1
Priority 1
CONTACTOR
CONTACTOR
3
3
Priority 2
Priority 2
Priority 3
Priority 3
CONTACTOR
CONTACTOR
4
4
Priority 4
Priority 4
1.5
TRANSFER SWITCH
ENCLOSURE
The standard switch enclosure is a National Electrical Manufacturer's
Association (NEMA) and UL 3R type. UL and NEMA 3R type enclo-
sures primarily provide a degree of protection against falling rain
and sleet; undamaged by the formation of ice on the enclosure.
1.6
SAFE USE OF TRANSFER
SWITCH
Before installing, operating or servicing this equipment, read the
SAFETY RULES (inside front cover) carefully. Comply strictly
with all SAFETY RULES to prevent accidents and/or damage to
the equipment. The manufacturer recommends that a copy of the
SAFETY RULES are posted near the transfer switch. Also, be sure
to read all instructions and information found on tags, labels and
decals affixed to the equipment.
Three publications that outline the safe use of transfer switches
are the following:
• NFPA 70; National Electrical Code
• NFPA 70E; Standard for Electrical Safety in the Workplace
• UL 1008, STANDARD FOR SAFETY-AUTOMATIC TRANSFER
SWITCHES
It is essential to use the latest version of any standard to ensure
correct and current information.
2.1
INTRODUCTION TO
INSTALLATION
This equipment has been wired and tested at the factory. Installing
the switch includes the following procedures:
• Mounting the enclosure.
• Connecting power source leads and load leads.
• Connecting the generator sensing and transfer relay circuits.
• Connecting any auxiliary contact (if needed)
• Connect load shed module loads (as required)
• Testing functions.
2.2
MOUNTING
Mounting dimensions for the transfer switch enclosure are in this
manual. Enclosures are typically wall-mounted. See "Installation
Diagram".
Handle transfer switches carefully when install-
ing. Do not drop the switch. Protect the switch
against impact at all times, and against con-
struction grit and metal chips. Never install a
transfer switch that has been damaged.
This transfer switch is mounted in a UL type 3R enclosure. It can
be mounted outside or inside and should be based on the layout
of installation, convenience and proximity to the utility supply and
load center.
Installation
NOTE:
3
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