Appendix C - Digital Load Managment (Dlm); Appendix D - Digital Load Managment (Dlm) Modules; Connecting Load Shed Module (Lsm) Connections - Generac Power Systems GH-410 Pautas De Instalación

Appendix C
APPENDIX C – DIGITAL LOAD MANAGEMENT
(DLM)
1. To control an Air Conditioner, connect the Y terminal of the
thermostat to one of the A/C 1 terminals. Connect the other
A/C 1 terminal to the Y terminal on the air conditioner.
Use 18 – 26 AWG copper wire. Refer to the Owner's Manual
for specific torque/connection requirements.
2. To control a second air conditioner repeat the above using
terminals marked A/C 2.
For specific AC control wire information, please refer to the
HVAC systems Owner's/Operation Manual.
APPENDIX D – DIGITAL LOAD MANAGEMENT
(DLM) MODULES
The load controller can operate up to four separate DLM's, each
one connected the same way as below.
• The NEMA 3R Enclosure of the DLM module can be installed
indoors or outdoors. If mounting outdoors the enclosure MUST
be orientated with the drain hole at the bottom.
• The DLM module is fitted with conduit knockout locations.
These knockout locations are the only locations that conduit
should be attached to the enclosure. A grounding stud is
provided inside the enclosure in order to ground the conduit.

CONNECTING LOAD SHED MODULE (LSM) CONNECTIONS

The LSM can control an air conditioner (24 VAC) directly or
a separate contactor (120 VAC) which can control any load
connected to it (see "Load Shed Module Connections" Figure).
20
65
NOTE:
Sequence of Operation
The 4 green status LEDs will indicate when a load priority level is
enabled.
• All loads are enabled when the transfer signal is off. (ATS in
Utility position).
• If the transfer signal is pulled low (Active)
• All loads are enabled until an overload is detected
• When an overload is detected all loads are disabled
• After 5 minutes priority 1 loads are enabled.
• After another 30 seconds priority 2 loads are enabled
• After another 30 seconds priority 3 loads are enabled
• After another 30 seconds priority 4 loads are enabled
If an overload is detected within 30 seconds of a level being
enabled, all loads are disabled again and the sequence repeats.
However, the level that caused the overload and all levels higher
will not be enabled again for 30 minutes.
Control of Air Conditioner Load
1. Route the thermostat cable (from the furnace/thermostat to
the outdoor air conditioner unit) to the transfer switch.
2. Connect the wire to the terminal strip terminals (Air 1) on
the LSM as shown in the "Load Shed Module Connections".
These are normally closed contacts which open upon load
shed conditions. Route thermostat wire away from High
voltage wires.
3. If required, connect the second air conditioner to the terminal
strip terminals (Air 2).
Contact Ratings
Air 1 & 2
These instructions are for a typical air conditioner installation.
Control of heat pump and 2-stage air conditioners will require
special connections.
Control of a Separate Contactor
A separate contactor relay module can be purchased from the
manufacturer. If a different relay is used it must have a 120 VAC
coil voltage. The LSM supplies fused (5A) 120 VAC to energize
the coils of the relay contactors (contactor 1, 2, 3 or 4).
1. Mount the contactor module and connect the load to the main
contacts.
2. Connect the contactor coil to the desired LSM (contactor 1, 2,
3 or 4) terminals on the terminal strip.
3. Connect additional load shedding contactors in a similar
fashion.
24 VAC, 5.0 Amps Max
NOTE: