The heating system for the pump station will be dependent on the facility size and layout. High-efficiency and standard units of the types listed below must be presented to the Owner with anticipated costs including purchase, installation, operation, and maintenance of the heater. Maintenance and operation costs provided to the Owner will include a five-year minimum projection. Heating units must be appropriately sized for minimum heating requirements. As a general rule, the amount of heat necessary for the station is that amount required to keep pipes and other water containing equipment from freezing. An indoor temperature of 54°F and an outdoor temperature of 20°F should be used for heating design, unless general otherwise required by equipment manufacturers or stipulated by the Owner. Note that the required temperature of 54°F must be maintained in the station and wet well area regardless of outdoor temperatures that are at or below 54°F. Where indicated by the Owner, a redundant heating system may be required in the event of a primary system failure. Heating units in close proximity to the wet well areas must meet the requirements of the most recent edition of NFPA 820. Heaters and thermostats must be installed away from sensitive electronic equipment. Acceptable heater options include: Natural Gas Boilers High Efficiency Natural Gas Unit Heaters High Efficiency Natural Gas Forced Air Furnace Electric Unit Heater In the event that a boiler is selected as the preferred heater type, equipment must meet all current ASME Boiler and Pressure Vessel Code requirements. Additionally, all zones which are fed from a boiler must be alarmed to the SCADA system for low and high temperatures in the heating system. Set points for alarm condition shall be when temperature in the system extends below 42 F and above System 230˚F. pressure shall also be alarmed with a high set point of 40psi. Water drains from boiler units must be conducted to a designated drain that is tied to the wastewater system of the facility. Provisions shall be made for adequate heating for: The comfort of the operator The safe and efficient operation of the equipment In pump stations not occupied by personnel, the heat required is to assure proper operation of equipment and treatment processes. b. Cooling The amount of cooling required shall be based on equipment, motor, and device requirements. Cooling units shall only be installed where control equipment or other devices are housed, not the entire facility. Because of the range of cooling equipment available and temperature fluctuations within a facility, it shall be the responsibility of the Engineer to calculate and present to the Owner a range of anticipated
The heating system for the pump station will be dependent on the facility size and layout. High-efficiency and standard units of the types listed below must be presented to the Owner with anticipated costs including purchase, installation, operation, and maintenance of the heater. Maintenance and operation costs provided to the Owner will include a five-year minimum projection. Heating units must be appropriately sized for minimum heating requirements. As a general rule, the amount of heat necessary for the station is that amount required to keep pipes and other water containing equipment from freezing. An indoor temperature of 54°F and an outdoor temperature of 20°F should be used for general heating design, unless otherwise required by equipment manufacturers or stipulated by the Owner. Note that the required temperature of 54°F must be maintained in the station and wet well area regardless of outdoor temperatures that are at or below 54°F. Where indicated by the Owner, a redundant heating system may be required in the event of a primary system failure. Heating units in close proximity to the wet well areas must meet the requirements of the most recent edition of NFPA 820. Heaters and thermostats must be installed away from sensitive electronic equipment. Acceptable heater options include: Natural Gas Boilers High Efficiency Natural Gas Unit Heaters High Efficiency Natural Gas Forced Air Furnace Electric Unit Heater In the event that a boiler is selected as the preferred heater type, equipment must meet all current ASME Boiler and Pressure Vessel Code requirements. Additionally, all zones which are fed from a boiler must be alarmed to the SCADA system for low and high temperatures in the heating system. Set points for alarm condition shall be when temperature in the system extends below 42 F and above 230˚F. System pressure shall also be alarmed with a high set point of 40psi. Water drains from boiler units must be conducted to a designated drain that is tied to the wastewater system of the facility. Provisions shall be made for adequate heating for: The comfort of the operator The safe and efficient operation of the equipment In pump stations not occupied by personnel, the heat required is to assure proper operation of equipment and treatment processes. b. Cooling The amount of cooling required shall be based on equipment, motor, and device requirements. Cooling units shall only be installed where control equipment or other devices are housed, not the entire facility. Because of the range of cooling equipment available and temperature fluctuations within a facility, it shall be the responsibility of the Engineer to calculate and present to the Owner a range of anticipated
PSFinal_CE_SN_8-23_2016(2).docx