Generac 6551 Portable Generator User Manual


 
Automatic Standby Generator Owner’s Manual 9
2.4.3 — Fuel Requirements
The engine has been fitted with a dual fuel carburetion system. The unit will run on natural gas or LP gas (vapor), but it has been factory set to
run on natural gas. The fuel system will be configured for the available fuel source during installation.
Recommended fuels should have a btu content of at least 1,000 Btus per cubic foot (37.26 megajoules per cubic meter) for natural gas, or at
least 2,500 Btus per cubic foot (93.15 megajoules per cubic meter) for LP gas (vapor).
If converting to LP gas from natural gas, a minimum LP tank size of 250 gallons (946 liters) is recommended. See the Installation Manual for com-
plete procedures and details.
Gaseous fuels such as natural gas and liquid propane gas are highly explosive. Even the
slightest spark can ignite such fuels and cause an explosion. No leakage of fuel is permitted.
Natural gas, which is lighter than air, tends to collect in high areas. LP gas is heavier than air
and tends to settle in low areas
2.4.4 — Battery Requirements
Group 26R, 12V, minimum 525CCA (Generac Part No. 0H3421S).
For proper battery maintenance procedures, see Section 4 Maintenance.
2.4.5 — Battery Charger
The battery charger is integrated into the control panel module in all models. It operates as a “Smart Charger” which ensures output charging lev-
els are safe and continuously optimized to promote maximum battery life.
2.4.6 — Engine Oil Requirements
For proper oil viscosity, see chart in Figure 4-1: Recommended Oil Based on Temperature.
2.5 — Accessories
There are performance enhancing accessories available for air-cooled generators.
Accessory Description
Cold Weather Kit Required in areas where temperatures regularly fall below 32 ºF (0 ºC).
Scheduled Maintenance Kit Includes all pieces necessary to perform maintenance on the generator along with oil recommendations.
Auxiliary Transfer Switch Lock-
out
Enables any of the transfer switches to completely lock out one large electrical load by tying into its control system.
Fascia Skirt Wrap Standard on all 22 kW units. It is available for all other current production air-cooled units. It snaps together, around
the base and mounting pad of the generator, to provide a smoothing, contoured look as well as rodent/insect protec-
tion. Requires use of the mounting pad shipped with the generator.
Mobile Link™ Provides a personalized web portal that displays the generator’s status, maintenance schedule, event history and
much more. This portal is accessible via computer, tablet or smart phone. Sends emails and/or text notifications the
moment there is any change in the generator’s status. Notification settings can be customized to what type of alert is
sent and how often. For more information, visit www.standbystatus.com.
Touch-Up Paint Kit Very important to maintain the look and integrity of the generator enclosure. This kit includes touch-up paint and
instructions.
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