Contax SW 2524, Owner'S Manual, Page: 45 / 322

Pre-Configuration Planning
976-0043-01-01 2–11
Accessibility Locate the batteries in an accessible location if maintenance is required.
Two feet clearance above the batteries is recommended for access to the
battery caps. They should be located as close to the inverter as possible
without limiting access to the inverter’s disconnects. Install the batteries
to the right of a wall-mounted inverter for easy access to the DC side of
the inverter and shorter cable runs. The battery bank may also be placed
on the opposite side of the wall on which the inverter is mounted.
Vented Enclosures For safety and to limit access to the batteries, the batteries should be
housed in an enclosure or dedicated room that is lockable or screened, and
ventilated. It should be vented to the outside by a one inch minimum vent
pipe located at the top of the enclosure. Install an intake vent at the
bottom of the inclosure to promote air circulation.
Enclosure
Requirements The enclosure should be made of an acid resistant material or have a
finish that resists acid to prevent corrosion and be capable of containing
the electrolyte from at least one battery should a leak occur.
Enclosures located outside must be rainproof and screened to prevent
access by rodents or insects and insulated from extreme temperatures.
Batteries will give their best performance and service life when operating
in a 20 to 25 °C environment.
Battery Bank Requirements
Important:
These vents exhaust corrosive and explosive hydrogen
sulfide gases and must not be overlooked when designing an enclosure.
Note: Consult battery vendor for additional information on battery
enclosure requirements.
Note: Based on the peak current of the inverter, the minimum allowed
battery bank is 100 Ah. The recommended battery bank size is
determined by the battery bank worksheet in
Appendix C ( Table C-1,
“Determining Average Daily Load in Amp-hours” on page C–7 ). It is
not recommended or designed to operate this inverter without batteries.