Components Overview; System Overview; Solar Subpanel; Solar Modules - Lennox XC21 Engineering Data

SUNSOURCE HOME ENERGY SYSTEM - COMPONENTS
®

SYSTEM OVERVIEW

All Dave Lennox Signature
Collection air conditioners and
heat pumps are equipped at the
factory for upgrading to the
SunSource Home Energy System.
®
Units can be upgraded at the time of installation or in
the future.
Solar energy is first used to meet cooling/heating
demands. When the cooling/heating system is not
operating, the system powers lighting, appliances and
other electronic devices in the home. And in some
locations, any surplus power is sent back to the utility
company for a possible credit (check with your local
utility company for availability).
The SolarSync™ Package consists of the following
components:
• Lennox Solar Subpanel field installed in a Dave
Lennox Signature Collection air conditioner or heat
®
pump unit.
• Solar Modules (1 to 15 may be used to vary the
amount of electricity generated).
• Envoy Communications Gateway that monitors home
energy usage.
All components must be ordered separately.
Wiring from the roof mounted solar modules is routed to
the outdoor unit. From there power travels to the home
electrical service panel using the existing outdoor unit
power wiring.
NOTE - Refer to separate Engineering Handbook
Bulletin for the SunSource
for more detailed information. See section Solar - Kits/
Accessories.
Also refer to SunSource
Applications and Design Guidelines Manual (Corp.
1021-L3) for complete information on designing, sizing
and installing a complete system.
APPROVALS
The SunSource Home Energy System meets the
®
requirements for federal tax credits listed under the
U.S. Emergency Economic Stabilization Act of 2008,
covering 30% of the cost of the solar modules, including
installation.

Solar Modules

Communication
Standard
Gateway
Outlet
Air Conditioner
or Heat Pump
Unit
®
Electrical
Panel
Home Energy System
®
Home Energy System
®
Future
Modules
Performance
Monitoring
Website
Broadband
Internet
Connection
LENNOX® SOLAR SUBPANEL
The Lennox Solar Subpanel replaces the
®
factory piping panel on the outdoor unit and
provides circuit breaker protection and power
entry for both HVAC (line) and solar power
wiring.
Subpanel is equipped with separate circuit
breakers for both HVAC (line) voltage and
solar power.
Equipped with pigtail connections for easy
field wiring.
Subpanel is an ETL listed accessory.
Split design (upper/lower panel) allows installation on
different size outdoor units. Subpanel is furnished with
three separate lower panels. See Outdoor Unit Usage
table for correct lower panel size.
Note - Subpanel is not backwards compatible with older
Dave Lennox Signature
Disconnects for HVAC (line) and solar power wiring are
not furnished and must be field provided.
SOLAR MODULES
Microinverters produce AC power synchronized to the
utility grid.
Modules operate independently from each other
allowing modules that are not shaded or dirty to operate
with optimum performance.
Racking system is built-in to the module frame.
Painted flat black frame.
Four modules furnished per order.
Solar modules are UL listed, CSA certified and meet
National Electrical Code requirements.
XC21 - 2 to 5 Ton Air Conditioner / Page 7
Collection outdoor units.
®
Converts solar energy
into electricity.
Built-in racking
hardware, wiring,
grounding and
microinverters.