Transfer Switch Manual

General Information
Automatic Transfer Switch Owner’s Manual 5
Four LEDs, located on the Smart A/C Module (B in
Figure 2-2), illuminate when a load is connected and
powered.
The Smart A/C Module has a test button used to simulate
an overload condition. This button operates even when
the transfer signal is inactive.
Figure 2-2. Smart A/C Module
2.7.2— Smart Management Module
(Sold Separately))
Any loads, including central air conditioners, can be
managed using a Smart Management Module (SMM).
The system can accommodate up to eight individual
SMM modules.
NOTE: The SMM modules are self-contained and have
individual built-in controllers.
Figure 2-3. Smart Management Module
2.7.3— Application Considerations
Generator overload condition is determined by generator
frequency. Loads are shed when frequency is less than
58 Hz for three seconds or less than 50 Hz for ½ second
(for 60 Hz systems).
The Smart A/C Module can be used in conjunction with
individual Smart Management Modules (SMM) to
manage a combined total of eight loads.
• Use Priorities A/C 1-4 on the Smart A/C Module as
the top priorities, then up to four Smart Manage-
ment Modules as Priorities 5-8.
• Use only select A/C priorities on the Smart A/C
Module as the top priorities, then use additional
Smart Management Modules as the remaining pri-
orities.
• A Smart Management Module can share a priority
with an A/C priority on the Smart A/C Module pro-
vided the generator is sized to handle the com-
bined surge load from both appliances. Sharing
priorities can allow up to 12 loads to be managed in
a properly sized system.
In any combination of modules, the recovery times after a
loss of utility power or shutdown due to overload are
shown in Table 1.
Refer to the SMM Owner’s/Installation Manual for
detailed characteristics and specifications of that product.
0 GROUND
194 +12V
23 TRANSFER
A/C 1
A/C 2
A/C 3
A/C 4
A/C 1
A/C 2
A/C 3
A/C 4
T1
NEUTRAL
000802
B
A
000106
Table 1. Priority Settings
Priority Recovery Time
Smart A/C
Module
Smart
Management
Module
1 5 minutes Yes Yes
2 5 minutes 15 seconds Yes Yes
3 5 minutes 30 seconds Yes Yes
4 5 minutes 45 seconds Yes Yes
5 6 minutes NA Yes
6 6 minutes 15 seconds NA Yes
7 6 minutes 30 seconds NA Yes
8 6 minutes 45 seconds NA Yes