KRUEGER SVE Installation, Operation And Maintenance Manual

Page | 21 Revised: 03/19 Analog Control Troubleshooting The following troubleshooting guide pertains to single duct cooling applications but the same concepts can be applied to other configurations. NOTE: For approximately 15 seconds after power is applied, no rotation will occur and one or both of the controller/actuator LEDs will flash. Controller 1. Check that the shaft moves freely. (Press and hold the actuator release clutch and manually rotate the shaft.) 2. Check wiring. (See Wiring Issues section below.) 3. Check for a tripped circuit breaker to the transformer, for pro ...

Page | 10 Revised: 03/19 Inlet Airflow Sensor Area and K Factor LMHS, RVE 04 05 06 07 08 09 10 12 14 16 22 Inlet Diameter, inches 4 5 6 7 8 9 10 12 14 16 22 Velocity Magnification 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 1.52 Velocity Factor 2625 2625 2625 2625 2625 2625 2625 2625 2625 2625 2625 CFM K Factor 229 358 515 702 916 1160 1432 2062 2806 3665 7000 Inlet Area, Sq. ft. 0.087 0.136 0.196 0.267 0.349 0.442 0.545 0.785 1.069 1.396 2.667 Recommended Min CFM @ 0.03” WG 40 62 89 122 159 201 248 357 486 635 1212 Table 1 – Inlet Airflow Sensor K Factor Sys ...

Page | 9 Revised: 03/19 Controls Setup General The LMHS single duct VAV terminal is designed to supply a varying quantity of cold primary air to a space in response to thermostat demand. Some units have reheat options to meet heating demand requirements as well. Most VAV terminals are equipped with pressure compensating controls to regulate the response to the thermostat independent of the pressure in the supply ductwork. To balance the unit it is necessary to set both the maximum and minimum set points of the controller. Each control option has specific procedures for balancin ...

Page | 27 Revised: 03/19 Table 6.C – SVE Basic Pressure and Airflow Data SVE Basic Pressure and Airflow Performance Inlet Size Maximum Airflow (CFM) Minimum Airflow (CFM) Flow Rate (CFM) Min ∆Ps ("W.G.) Inlet Size Maximum Airflow (CFM) Minimum Airflow (CFM) Flow Rate (CFM) Min ∆Ps ("W.G.) A 456 79 75 0.057 J 3938 682 682 0.048 155 0.242 1475 0.223 235 0.556 2300 0.543 315 1 3121 1 B 656 114 114 0.058 K 5104 884 884 0.032 225 0.226 2225 0.204 350 0.548 3550 0.52 473 1 4923 1 C 875 152 152 0.037 L 6563 1137 1137 0.013 350 0.198 2925 0.085 575 0.535 4725 0.222 786 1 6563 0.4 ...

Page | 22 Revised: 03/19 4. Check “Requested Flow” DC voltage on terminal “2-10 IN” and “COM“. a. Use Table 4 (pg. 19) to correlate into cubic feet per minute (CFM). b. If reading is not what is desired, then adjust thermostat to give correct CFM. NOTE: Never jumper terminal 16 VDC to “-” as this would cause a short, and possibly damage the power supply NOTE: When using the same transformer for more than one control, the phase and ground must be consistent with each device. Water Valve Installation WARNING: Disconnect Power before Wiring or Electrical Shock and ...

Page | 4 Revised: 03/19 Service Access Provide service clearance for unit access. Codes Install units in compliance with all applicable code requirements. Warranty All Krueger furnished items carry a 1-year limited warranty from the date of shipment. Maintenance No periodic preventative maintenance is required, unless called for by a specific control sequence. Control Arrangements The LMHS single duct and RVE / SVE retrofit units are offered with a wide variety of factory-mounted controls that regulate the volume of air delivery from the unit and respond to cooling and heating ...