Operation and Maintenance
Since all refrigeration and heating systems are centralized
in a mechanical room, maintenance is greatly simplified. Centralization
of all the ammonia from the refrigeration system is
much safer for employees. As the 2006 ASHRAE Handbook—
Refrigeration states, ammonia has no scheduled phaseout and
no increasing cost as with CFC and HCFC refrigerants. All
water and glycol loops are equipped with balancing valves,
which facilitate system optimization and maintenance. All
lighting control is also centralized, which allows easy operation
and automation.