FBD 77 Series, Руководство по установке и эксплуатации, Страница: 10 / 74

77X INSTALLATION & OPERATION MANUAL
771/772/773/774 MODELS
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4.4 Self-Contained Refrigeration Models
Adequate clearance around the dispenser is required for proper air flow. Failure to provide proper clearance will reduce
capacity and can damage the refrigeration system. See the specifications page for clearance requirements. Avoid
enclosed installations if possible; recirculated hot discharge air from the dispenser can impact performance or damage
the system. Such installations require supplemental ventilation such as a fan with a thermal switch to remove the hot
discharge air.
An ambient temperature of no more than 75°F (24°C) provides the optimal capacity. As the ambient temperature increases,
the dispenser capacity decreases. It is essential that the HVAC system be sized to handle the additional heat load from all
self-contained, air-cooled dispensers. If ambient heat is a concern, FBD recommends a remote-condensing dispenser.
4.5 Remote-Condensing Models
Remote-condensing models utilize a condenser assembly external to the building and are designed for ambient
temperatures from -10°F to 120°F (-23°C to 49°C). This configuration removes the heat and fan noise from the inside
environment and reduces the air conditioning load during the warm season. Because air flow is not a high concern with
this set up, this style dispenser is suitable for enclosed spaces and zero side clearance installations (dispensers side-by-
side). Remote condensing models utilize a small air recirculation fan to assist in drying out any internal condensation. This
fan is located on the top of the dispenser and runs continuously. If your dispenser has an opening on the top panel for the
fan, do not stack objects on top of the dispenser as this will block the airflow and damage the fan.
4.6 Water-Condensing Models
Water-condensing models have specific water flow rate and temperature requirements. The minimum required volumetric
flow rate is 3.5 gallons (13.2 L) per minute and the allowable water inlet temperatures should not exceed 75°F (24°C).
Water flow rates below the recommended amount or temperatures in excess of recommended temperature will cause
significantly degraded performance and possibly damage the dispenser. Water-condensing models utilize a small air
recirculation fan to assist in drying out any internal condensation. This fan is located on the top of the dispenser and runs
continuously. If your dispenser has an opening on the top panel for the fan, do not stack objects on top of the dispenser
as this will block the airflow and damage the fan.
4.7 Universal Gas Configurations
All 77x multi-flavor dispensers come with “universal gas” options. The “universal gas” options provide multi-gas, multi-
drink functionality which allow for additional flexibility in configuration of the dispenser. For the 771 multi-flavor dispensers,
the universal option provides two gas connections - one which drives the pump and active charge system, and a second
which is injected into the product. For the 772 multi-flavor dispensers, three gas connections are provided - one for active
charge/pumps, one for injection into barrel 1 product, and one for injection into barrel 2 product.
The “Main Gas” connection which drives the water pump, active charge system, and pneumatic dispense valves can use
compressed air, CO2, or N2. The “Gas 1” and “Gas 2” (for 772 multi-flavor) can utilize CO2 or N2 for injection into the
product.