www.price-hvac.com catalogue f-36 dated 09 / 03 ld ld ld ld ld v 5000 v 5000 v 5000 v 5000 v 5000 air volume control valve
2 ? copyright e.h. price limited 2003 ldv 5000 general description the ldv 5000 is supplied with the duct, damper, and sensor constructed of type 316 stainless steel. the ldv 5000 assembly is designed to accept direct digital controls (ddc) for vav pressure independent operation. the terminal unit controls are supplied by the controls contractor and either factory or field mounted and wired. for information concerning controls, components, sequence of operation, etc., please refer to the documentation provided by the controls contractor. receiving inspection after unpacking the assembly, check it for shipping damage. if any shipping damage is found, report it immediately to the delivering carrier. during unpacking and installation do not handle by the inlet velocity sensor, damper shaft, or tubing. damage may result. wiring if controls have been factory mounted, a wiring diagram will be included with the unit indicating the factory mounted components. for field wiring of room sensors and other accessories, refer to the controls contractor's documentation. if the controls have been field mounted, refer to the controls contractor's documentation for all wiring information. installing the ldv 5000 terminal unit the basic ldv 5000 is light enough that it can be supported by the ductwork in which it is installed. use the support method prescribed for the round duct in the job specifications. important: for optimum performance there should be a minimum of three duct diameters of straight inlet duct, same size as the inlet , between the inlet and any transition, take off or fitting. the assembly should be mounted right side up. it should be level within 10 degrees of horizontal, both parallel to the air flow and at right angles to the air flow. the side of the assembly is labelled with an arrow indicating up. do not mount the control side of the assembly tight to a wall, pipe or other obstruction. allow sufficient room for access to the controls. the ldv can be welded directly to the inlet and discharge duct work. if the ldv is mechanically fastened to the duct work an approved duct sealer should be used to seal all connections. damper rotation is always clockwise to the open position. an identification mark on the end of the shaft indicates the damper position. capped "t"s are provided in the sensing lines from the amplifying sensor. these allow field connection of a differential pressure gauge for accurate air flow measurement. the factory supplied sensing lines are color coded. red indicates the total pressure or ?hi? line which should be located on the upstream side. green indicates the static pressure or ?lo? line which should be located on the downstream side. an optional protective enclosure may be provided to house the terminal unit control components. the enclosure cover is removable with two sheet metal screws. the air volume ranges listed are recommended for optimum performance. a minimum value of zero is also acceptable if no heating coils are attached. selection of air flow limits below the listed values is not recommended. stability and accuracy may not be acceptable at lower than recommended air flow limits. the actual performance will vary depending on the terminal unit controls supplied. cfm l/s unit size min. - max min. - max 6 80 - 450 38 - 212 7 110 - 650 52 - 307 8 160 - 800 76 - 378 9 200 - 1050 94 - 496 10 270 - 1350 127 - 637 12 350 - 2100 165 - 991 14 500 - 3000 236 - 1416 16 650 - 4000 307 - 1888 air volume ranges notes: factory calibrated controls must be selected within the above flow range limits. a minimum value of zero is also available. when an auxiliary flow setting is specified, the value must be greater than the minimum setting and within the range limits. on controls mounted by price but supplied by others, the air volume ranges are guidelines only. selection of air flow limits below the listed values is not recommended. stability and accuracy may not be acceptable at lower than recommended air flow limits. the actual performance will vary depending on the terminal unit controls supplied.
? copyright e.h. price limited 2003 3 ( ) calibration equation vp = q 2 vp - differential pressure at sensor, inches w.g. q - air flow rate, cfm at standard density. k - calibration constant k unit size k 6 570 7 790 8 1100 9 1325 10 1770 12 2450 14 3500 16 4600 notes 1. gauge taps are normally supplied with the terminal unit to allow field measurement of the differential pressure at the sensor with a manometer, magnahelic or other measuring device. if the terminal velocity controls utilize a flow-through transducer, a proper velocity pressure reading will not be read at the gauge taps and the calibration curves cannot be used for field measurement. the flow-through transducer operates on the principle of mass flow rather than pressure differential. controls utilizing a dead-ended pressure transducer will allow field measurement with the gauge taps and calibration curves provided. 2. setting flow limits for a differential pressure of less than 0.02 inches in not recommended. stability and accuracy of flow limits may not be acceptable due to low velocity pressure signal. performance will vary depending on the terminal unit controls provided. 3. for field calibration of air flow limits refer to the control contractors documentation. ldv calibration curves
warranty the company warrants and guarantees that all goods within this catalog that have been manufactured by the company have been manufactured in accordance with the specifications published herein and will be free from defects in material and workmanship f or a period of twelve (12) months from the date of bill of lading issued by the company. the company will replace defective product at its option, bu t will not be responsible for labour or material charges in replacing product or consequential damages. any installation not conforming with the company's sp ecifications, manuals, bulletins or instructions or any misuse or any modification not authorized by the company voids this warranty. this warranty is in lieu of all provincial, state, and federal statutory warranties and the conditions herein are in substitution and replacement of such warranties, statutory or otherwise. air distribution products for world class cities the founding principles of our company have never changed ? business integrity, first class service and a commitment to people. price manufacturing endeavours arose from our belief that we could supply superior products and services at a reasonable price. our mission is to become the worldwide supplier of preference for air distribution products and services. you can rely on price ? our products and services ? with confidence. international in canada 638 raleigh street winnipeg, manitoba canada r2k 3z9 (204) 669-4220 fax (204) 663-2715 in the united states 2975 shawnee ridge court suwanee, georgia usa 30024 (770) 623-8050 fax (770) 623-6404 manufacturing facilities & distribution warehouse in atlanta, georgia representatives in most major cities. product improvement is a continuing endeavour at price. therefore, specifications are subject to change without notice. consult your price sales representative for current specifications or more detailed information. manufacturing facility in winnipeg, manitoba sales offices in: vancouver island vancouver kelowna export sales office 638 raleigh street winnipeg, manitoba canada r2k 3z9 (204) 669-4220 fax (204) 663-9810 ottawa montreal quebec city dartmouth / halifax edmonton calgary regina saskatoon winnipeg london hamilton toronto www.price-hvac.com your local price representative: ? price is a registered trademark of e.h. price limited. ? 2003. lithographed in canada 09/03
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