HE 1.5 / CUSTOMER:
DATE:
1.0SCOPE
1.1Provide as indicated a vertical pressure type water softener system complete with pressure vessel, softening resin, control valve, brine maker and controller. The system will be of an approved design as fabricated by a manufacturer regularly engaged in the production of water treatment equipment. All equipment and material will be supplied in compliance with the specifications as intended for a complete and operational system.
(Open Bidding Arrangement)
1.2Qualified manufacturers of water treatment equipment of the type specified are Culligan International Company or the Engineer’s approved equal.
(Closed Bidding Arrangement)
1.2Qualified manufacturers of water softener equipment must be engaged in the manufacture of this equipment for a period of not less than fifteen (15) years. Acceptable manufacturers are Culligan International Company or the Engineer’s approved equal.
2.0GENERAL DESCRIPTION
(Selection for statement of specific model)
2.1The system specifications are based on Culligan International model ______.
The purpose of the Culligan International Series HE automatic water softener will be to remove mineral hardness from a known water supply to a level not to exceed ______mg/l, as determined by an accepted ASTM or EDTA test method, when the system is operated at ______gpm and in accordance with the operating instructions. The system will be capable of supplying ______gallons of softened water between regenerations based on the influent water analysis listed in Section 3.1 of this equipment specification.
The systems performance is rated at a design flow rate of ______gpm with a rated pressure drop of ______psi, and will be capable of a peak flow rate of ______gpm for sustained periods of 90 minutes with a pressure drop of ______psi.
There shall be a quantity of ______of the above described systems.
(Selection for general statement)
2.1The system, in compliance with the equipment specification, is described as an automatic ______water softener system meeting the performance and design data requirements as hereinafter specified.
3.0PERFORMANCE AND DESIGN DATA
3.1INFLUENT WATER ANALYSIS
Calcium, Ca:
Magnesium, Mg:
Total Hardness:
(Constituents above are expressed in ppm or mg/l as CaCO3 or as otherwise specified.)
Iron, Fe:
Manganese, Mn:
Total Dissolved Solids, TDS:
(Constituents above are expressed in ppm or mg/l.)
Turbidity, NTU:
Color:
pH:
3.2DESIGN PARAMETERS
Normal System Flow & Pressure Drop: gpm @ 15 PSI
Maximum System Flow & Pressure Drop: gpm @ 25 PSI
Backwash/Rinse Flow: gpm
Backwash Volume: gallons nominal
Daily Water Usage: gallons per day (gpd)
Daily Hours of Water Demand:
Operating Temperature Range:40–100F
Operating Pressure Range (System):30–120 PSI
Electrical Requirements:24 Volts AC, 50/60 Hz, 1 ph (dedicated receptacle req’d, ref ¶ 4.4)
System Dimension (L x W x H):”L x ”W x ”H
(ASTM soap test method)
3.3EFFLUENT WATER QUALITYZERO gpg Hardness
(Hardness EDTA test method)
3.3EFFLUENT WATER QUALITY MG/L Hardness
4.0EQUIPMENT SPECIFICATIONS
4.1SOFTENER TANK(S)
Each system shall include _____ tank(s). Each softener tank shall be _____ inches in diameter. The sideshell height shall be _____ inches, sufficient to allow for proper freeboard space above the resin bed for adequate expansion of the resin during backwashing.
4.1.1 Tank Construction
Tank(s) shall be manufactured of polyester reinforced by a continuous roving glass filament overwrap. The top opening will be 4”-8 UN threaded and the tank bottom will be supported on a molded structural base.
4.1.2 Access Openings
Each tank will be equipped with an opening in the head for mineral filling and periodic inspection.
4.2INTERNAL DISTRIBUTION
4.2.1The upper distribution system shall be of the single point diffuser type to dispense water laterally to avoid channeling within the resin bed.
4.2.2The lower distribution system shall be of the single point distributor type, constructed of PVC pipe and a fine slotted strainer to provide even flow distribution through the resin bed. The distribution system shall be embedded in a subfill of washed inorganic material to support the resin bed.
4.3MAIN OPERATING VALVE
The main operating valve shall be of a top mount design constructed of thermoplastic to resist attack by substances found in natural water supplies. Inlet and outlet connections are 1.5 inch NPTE.
The main operating valve will be of the motor driven, mechanically activated design with five (5) positions to accomplish the regeneration steps of backwash, brine draw/rinse, fast rinse and brine refill, in addition to the service position. The internal piston and seal assembly will be of a modular cartridge design for ease of replacement and service.
The main operating valve shall incorporate self adjusting flow regulators to control the rate of flow and prevent resin loss during backwash, brine/rinse and fast rinse/refill steps of regeneration, regardless of system pressure fluctuations between 20 and 125 psi.
The main operating valve will be fully tested prior to shipment.
(Single units only – hard water bypass)
The unit shall be supplied so that the valve will allow automatic bypass of untreated water during regeneration. The bypass shall be integral to the main operating valve body and be capable of being easily modified to prevent hard water bypass.
(Single units only – NO hard water bypass)
The unit shall be supplied so that the valve will not allow automatic bypass of untreated water during regeneration.
4.4 CONTROLS
A fully integrated programmable micro-processor driven electronic controller shall be provided to automatically cycle the main operating valve through the regeneration sequence.
The controller shall be capable of initiating a regeneration by accepting an internal signal from the controller time keeping device; an external Hall-Effect flow sensor, an external device such as a remote start push-button or any combination of these methods. The controller shall sequence all steps of an automatic regeneration and automatically return the softener to a service or stand-by mode. The initiating time and/or volume setpoints shall automatically reset upon completion of the regeneration sequence.
The controller shall include a sealed keypad, capable of programming all controller functions, located on the face of the controller. The controller display shall be a multi-line OLED display capable of full text readouts of operating status and codes.
The controller shall allow for a manual initiation of the automatic regeneration sequence by utilizing a regeneration selection from the controller menu.
The controller shall operate on a low voltage electrical system. The system shall include a UL/CUL listed transformer. The entire electronic control package and its associated inputs/outputs shall require not more than 24 VAC @ 100VA.
The controller shall utilize EEPROM to save pertinent programmed data and statistical functions. The controller must retain all functionality for power interruptions of less than 12 hours. A battery backup shall be installed and capable of maintaining the time of day for a minimum of 5 years.
4.4.1 System control options
(Time Clock, Single Unit)
An operator selected program of a time-initiated regeneration for single units shall be available. The controller shall be capable of being entirely programmed in the field without additional interface devices. The operator shall be able to select regeneration to occur after a specified number of hours or days or specific day of the week. The electronic controller shall indicate various data that includes number of regenerations in the last 14 days, days since last regeneration, total number of regenerations for the life of the unit, current day of the week, time of day and unit in regeneration.
(Meter Initiated, Single Unit)
An operator selected program of immediate or delayed volume initiated regeneration for single units shall be available. The controller shall be capable of being entirely programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes flow rate, capacity remaining, total flow since installation, number of regenerations in the last 14 days, days since the last regeneration, total number of regenerations for the life of the unit, time of day, and unit in regeneration.
(Time Clock, Parallel Duplex/Triplex/Quad Unit)
An operator selected program of a time-initiated regeneration for parallel twin/triple/quad configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes number of regenerations in the last 14 days, days since last regeneration, total number of regenerations for the life of the unit, current day of the week, time of day, and unit in regeneration.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Meter Initiated Duplex, Triplex, Quad Progressive Parallel Unit)
An operator selected program of immediate or delayed volume initiated regeneration for parallel configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The controller shall indicate various data that includes flow rate, capacity remaining, total flow since installation, number of regenerations in the last 14 days, days since the last regeneration, total number of regenerations for the life of the unit, time of day, Progressive Flow Trip Point, and unit in regeneration.
Each control shall have a dedicated flow sensor. Mode of operation shall be as follows:
1)(Parallel) All media tanks are on-line simultaneously. As each media tank’s user specified volume of treated water is reached, it shall immediately be taken off line, regenerated and returned to an on line status.
2)(Duplex Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring an additional tank to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. The additional tank shall be returned to a standby status once the treated water flow demand is less than the Trip Point flow rate for a minimum of 60 seconds.
Each controller shall allow for a regeneration delay. The purpose of the delay shall be to inhibit consecutive regenerations thereby allowing a suitable amount of time to pass between regenerations for making saturated brine solution.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Triplex Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring additional tanks to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. Systems having three media tanks will have tanks brought on line as multiples of the Trip Point flow rate are attained. Tanks shall be taken back off line as flow decreases to a level less than the Trip Point multiple for a minimum of 60 seconds.
Each controller shall allow for a regeneration delay. The purpose of the delay shall be to inhibit consecutive regenerations thereby allowing a suitable amount of time to pass between regenerations for making saturated brine solution.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Quad Progressive) One controller shall be dedicated as the primary controller. This controller shall be programmed with a Trip Point. The purpose of the Trip Point shall be to bring additional tanks to an on line status from stand by once the treated water flow demand of the facility meets the Trip Point flow rate. Systems having four media tanks will have tanks brought on line as multiples of the Trip Point flow rate are attained. Tanks shall be taken back off line as flow decreases to a level less than the Trip Point multiple for a minimum of 60 seconds.
Each controller shall allow for a regeneration delay. The purpose of the delay shall be to inhibit consecutive regenerations thereby allowing a suitable amount of time to pass between regenerations for making saturated brine solution.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Time Clock, Alternating Duplex Unit)
An operator selected program of a time-initiated regeneration for alternating twin configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The electronic controller shall indicate various data that includes number of regenerations in the last 14 days, days since last regeneration, total number of regenerations for the life of the unit, time of day, and unit in regeneration.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Meter Initiated, Alternating Duplex Unit)
An operator selected program of immediate volume initiated regeneration for alternating twin configurations shall be available. The controller shall be capable of being programmed in the field without additional interface devices. The controller shall indicate various data that includes flow rate, capacity remaining, total flow since installation, number of regenerations in the last 14 days, days since the last regeneration, total number of regenerations for the life of the unit, time of day, and unit in regeneration.
Multiple Unit Communication input/output shall be type RS485. The communication input/output feature will recognize when another controller within a multiple controller system is in a regeneration sequence, prohibiting the chance of multiple units regenerating simultaneously.
(Aqua-Sensor® Initiated, Single/Duplex/Triplex/Quad Unit)
An operator selected program of immediate or delayed hardness initiated regeneration for single units shall be available. An Aqua-Sensor® control probe will be inserted into each resin bed and will sense the need for regeneration based on the differential water hardness reading and will signal the circuit board to initiate regeneration. The system will compensate for variations in water hardness and temperature and will require no field adjustments when operated within the normal temperature range of the softener. The controller shall be capable of being entirely programmed in the field without additional interface devices. The electronic controller shall indicate various functions that include time of day, time of delayed regeneration, number of regenerations in the last fourteen (14) days, number of days since the last regeneration and unit in regeneration. For multi-unit systems, the controller must communicate via a single pre-wired cable assembly, simultaneous regenerations shall not be possible.
4.4.2 In addition the following functions shall be provided as part of the system controller:
Regeneration sequence timers: The controller shall allow control customization of individual regeneration cycle times, each programmable from 1 - 99 minutes. The regeneration cycle and time of cycle remaining shall be displayed when in regeneration.
Lockout function: The controller shall include a lockout to prevent unauthorized personnel from altering program data.
Regeneration override: The controller shall include a function to direct pre-programmed regeneration after a user determined period of time (hours or 24 hour intervals) without an input signal from another regeneration initiation device.
Alarm Status Indicator: The controller shall monitor operation of internal functions. If a fault is identified, the need for operator intervention will be signaled visually within the controller display.
Two Auxiliary Outputs: Two Auxiliary Outputs shall be integral to the controller circuit board. Each Output shall be capable of being programmed to provide power to a “Normally Open” or “Normally Closed” contact (user choice). These 24VAC outputs shall be used only for the purpose of energizing a relay coil.
Flow rate indication: The controller shall be capable of indicating the flow rate of the treated water.
Totalizer: The controller shall include a totalizer function and a display capacity to 99,999,999 units before resetting to zero. The totalizer value shall be displayed through the controller display during operation.
4.4.3 Flow Sensor(s)
Each softener will include a turbine-type Hall Effect flow sensor.
The sensor shall be integral to the control valve. A cable shall be provided for direct connection to the system controller.
The flow sensor package provided shall be functional within the flow range of 0.5 to 60 gpm.
The flow sensor shall have an accuracy to 2% over full range.
4.5EXCHANGE RESIN
The ion exchange resin shall be virgin high capacity “standard mesh” of sulfonated polystyrene type stable over the entire pH range with good resistance to bead fracture from attrition or osmotic shock. Each cubic foot of resin will be capable of removing 30,000 grains of hardness as calcium carbonate when regenerated with 15 lbs. of salt. The resin shall be solid, of the proper particle size of 20-50 mesh, U.S. standard screen and will contain no agglomerates, shells, plates or other shapes that might interfere with the normal function of the water softener. The resin shall be manufactured to comply with the food additive regulation 21 CFR 173.25 as set forth by the USFDA.
The system shall include _____ cubic feet of exchange resin per vessel and a total of _____ cubic feet of resin for the system.
4.6Brine System
Provide a complete brine system consisting of a plastic tank, salt platform, brine well, an automatic brine valve and all necessary fittings for operation with the water softening system. The system shall consist of a combined brine measuring and salt storage tank with salt platform. The tank will be sized ____ inches x _____ inches; the system will include a total of _____ brine tank(s). The brine tank can hold ______lbs of salt which provides for ______regenerations per salt fill.