KRUEGER LMHS Installation, Operation & Maintenance Manual Download

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WWW.KRUEGER-HVAC.COM

Installation, Operation & Maintenance Manual

for Krueger Terminal Units:

LMHS, LMHS-LC, RVE, SVE

SINGLE-DUCT

& RETROFIT

TERMINAL UNITS

Summary of Contents for LMHS

Page 1: ...WWW KRUEGER HVAC COM Installation Operation Maintenance Manual for Krueger Terminal Units LMHS LMHS LC RVE SVE SINGLE DUCT RETROFIT TERMINAL UNITS ...

Page 2: ...Service Access 3 Codes 3 Warranty 3 Maintenance 4 Control Arrangements 4 INSTALLATION 5 Step 1 Install Unit 5 Step 2 Make Duct Connections 5 Step 3 Install Sensors and Make Field Wiring Connections 5 CONTROLS SETUP 6 General 6 Set Point 6 System Calibration of Airflow Sensor 6 Pneumatic Controls 8 Analog Controls 11 Water Valve Installation 15 APPENDIX A 15 REPLACEMENT PARTS 21 TABLE OF CONTENTS ...

Page 3: ...5 B in Appendix A for unit weights INITIAL INSPECTION Once items have been removed from the carton check carefully for damage to duct connections inlet probes or controls File damage claim immediately with transportation agency and notify Factory Figure 2 Example Identification Label FOR OPERATIONS MAINTENANCE MANUAL SEE WWW KRUEGER HAVAC COM TAG VAV 1 01 FACTORY NO 441261 MODEL NO LMHS MAX CFM 40...

Page 4: ...c changeover control 2105 Cooling with proportional hot water heat control 2110 Cooling with solid state LineaHeat proportional heat control 2111 Cooling heating with automatic change over with up to 3 stages of electric heat control 2113 Cooling heating with automatic change over with solid state LineaHeat proportional heat 2115 Upstream static pressure monitoring 2116 Downstream static pressure ...

Page 5: ...mes the diameter of the duct is supplied to the inlet of the unit An elbow put at the inlet of the unit will create turbulence at the inlet making it difficult for the flow sensor to accurately measure the airflow Check that air supply duct connections are airtight and follow all accepted medium pressure duct installation procedures Refer to Table 6 A LMHS 6 B LMHS LC 6 C RVE and 6 D SVE for press...

Page 6: ...locity by dividing the design air volume the flow at 1 0 in w g by the nominal inlet area sq ft This factor is the CFM K factor list in the Table 1 above CONTROLS SETUP TABLE 1 INLET AIRFLOW SENSOR AREA AND K FACTOR LMHS RVE 04 05 06 07 08 09 10 12 14 16 22 Inlet Diameter in 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 262...

Page 7: ...3 4 4 4 99 5 3 6 3 74 6 3 2 2 49 8 2 8 1 24 9 2 4 07 17 4 2 3 05 12 4 2 2 04 10 0 03 7 5 2 1 40 19 50 24 70 33 100 47 200 94 300 142 108 229 169 358 243 515 331 702 432 916 547 1160 676 1432 973 2062 1324 2806 1730 3665 3303 7000 500 236 700 330 1000 472 2000 944 3000 1437 5000 2360 7000 3303 4 5 6 7 8 9 10 12 14 16 22 Figure 6 Krueger Inlet Airflow Sensor Chart ...

Page 8: ... location 2 Verify that the thermostat being used is compatible with the control sequence provided direct acting or reverse acting 3 Check main air pressure at the controller s The main air pressure must be between 15 psi and 25 psi If dual or switched main air pressure is used check the pressure at both high and low settings The difference between high pressure main and low pressure main should b...

Page 9: ...ermostat line from the velocity controller d Apply 15 psi to the thermostat port on the volume controller marked T by tapping into the main air pressure line e Adjust the minimum volume control knob marked LO and located at the side of the controller until the desired pressure differential is registered on the manometer To determine the required pressure differential refer to Table 1 Table 2 and t...

Page 10: ...tment and will not begin to reset from 0 until a higher thermostat reset pressure is reached This negative reset will also reduce the effective range of the controller by reducing the low end reset narrowing the reset span If a zero minimum is required adjust the LO STAT ΔP knob until the controller just begins to crack the damper open and then back off one quarter turn and verify zero airflow Thi...

Page 11: ...ir valve stays in wide open position Inlet airflow sensor is blocked by an obstruction sandwich bag etc Insufficient supply air in the inlet duct NOTE Always check Main air pressure 15 psi to 25 psi at the controller Proper thermostat signal and logic Direct Reverse Acting Disconnected or kinked pneumatic lines to the controller Blocked inlet airflow sensor or insufficient primary supply air Quali...

Page 12: ...closure of each unit showing the wiring terminations The wiring schematic can also be found on the control sequence submittal found on the Krueger website 5 Replace the thermostat cover Turn the two hex screws COUNTER CLOCKWISE until they are flush with the bottom cover and secure it to the back plate PROGRAMMING THERMOSTAT 1 The thermostat has three sequences that are selectable from the display ...

Page 13: ...240 346 471 615 778 960 1383 1882 2459 1336 4696 3 9 0 48 158 247 355 484 632 799 987 1421 1934 2526 1373 4824 4 0 0 50 162 253 364 496 648 820 1012 1458 1984 2592 1408 4950 4 1 0 53 166 259 373 508 664 840 1037 1494 2033 2656 1443 5072 4 2 0 55 170 265 382 520 680 860 1062 1529 2081 2718 1477 5191 4 3 0 58 174 271 391 532 695 879 1086 1563 2128 2779 1510 5308 4 4 0 60 177 277 399 543 710 898 1109...

Page 14: ...ck the Min and Max flow limits on the thermostat AO1 AO2 3 Check the adjustable mechanical stop position No Pressure Output Signal from Inlet Sensor 1 Check the tubing Tubing should be free of kinks and restrictions 2 Check air flow and sensor Sensor must be oriented in the correct airflow direction and free of large debris Wiring Issues 1 Check for correct wiring at unit and thermostat per indivi...

Page 15: ...G W ATTENUATOR 1 ROW 2 ROW 1 ROW 2 ROW 4 5 6 16 4 9 12 5 7 5 8 9 9 7 8 21 4 9 16 7 9 8 5 12 6 9 10 26 4 9 21 9 12 11 0 16 5 12 34 4 9 24 10 15 12 7 21 8 14 38 4 9 27 12 17 15 1 26 6 WARNING Disconnect power before wiring or electrical shock and personal injury could result Water valves are field supplied Most control manufacturers offer three different hot water valve applications on off and float...

Page 16: ... 0 01 0 08 0 21 0 36 0 01 0 04 0 1 0 17 0 02 0 13 0 32 0 56 0 03 0 21 0 53 0 91 0 04 0 29 0 73 1 26 0 05 0 38 0 93 1 62 0 01 0 04 0 1 0 17 12 0 78 2060 357 425 425 1000 1600 2060 8 18 5 30 30 0 01 0 08 0 2 0 33 0 01 0 04 0 1 0 17 0 02 0 14 0 35 0 58 0 04 0 22 0 57 0 95 0 06 0 31 0 8 1 32 0 07 0 4 1 02 1 69 0 01 0 04 0 1 0 17 14 1 07 2800 486 580 580 1375 2100 2800 11 26 36 36 0 01 0 07 0 16 0 29 0...

Page 17: ...16 0 24 0 02 0 09 0 21 0 32 0 03 0 11 0 27 0 41 0 03 0 13 0 32 0 49 8 0 35 915 160 190 440 700 915 0 01 0 04 0 1 0 17 0 02 0 8 0 18 0 3 0 03 0 12 0 26 0 42 0 04 0 15 0 35 0 56 0 05 0 19 0 43 0 69 9 0 44 1160 201 240 550 900 1155 0 01 0 04 0 12 0 16 0 02 0 07 0 21 0 27 0 03 0 11 0 29 0 38 0 03 0 14 0 38 0 5 0 04 0 17 0 47 0 62 10 0 55 1430 248 300 700 1100 1430 0 01 0 04 0 1 0 17 0 02 0 09 0 2 0 32...

Page 18: ...0 0 007 0 056 0 142 0 252 8 0 35 920 160 160 440 675 920 0 008 0 059 0 138 0 256 9 0 44 1160 201 200 550 875 1160 0 008 0 058 0 146 0 257 10 0 55 1430 248 250 675 1075 1430 0 008 0 056 0 142 0 252 12 0 78 2060 357 360 1000 1550 2060 0 008 0 06 0 143 0 253 14 1 07 2800 486 480 1375 2125 2800 0 008 0 063 0 149 0 259 16 1 40 3660 634 630 1775 2725 3660 0 008 0 06 0 141 0 255 NOTES 1 Δ Ps is the diffe...

Page 19: ...1075 1435 0 07 0 255 0 561 1 H 3281 568 568 1175 1775 2414 0 055 0 237 0 541 1 TABLE 6 D SVE BASIC PRESSURE AND AIRFLOW DATA INLET SIZE MAX AIRFLOW CFM MIN AIRFLOW CFM FLOW RATE CFM MIN ΔPs IN WG J 3938 682 682 1475 2300 3121 0 048 0 223 0 543 1 K 5104 884 884 2225 3550 4923 0 032 0 204 0 52 1 L 6563 1137 1137 2925 4725 6563 0 013 0 085 0 222 0 429 M 6417 1111 1111 2850 4625 6417 0 017 0 11 0 29 0...

Page 20: ... 0 13 652 33 3 8 19 2 10 16 7 10 14 4 12 11 1 14 4 8 14 5 0 17 065 41 7 5 24 0 10 20 8 10 18 1 10 13 9 12 6 0 14 6 0 20 478 28 8 8 25 0 8 21 7 10 16 7 10 7 2 14 7 0 23 891 33 7 8 29 2 8 25 3 8 19 4 10 8 4 14 8 0 27 304 38 5 6 33 3 8 28 9 8 22 2 10 9 6 14 9 0 30 717 43 3 6 37 5 6 32 5 8 25 0 8 10 8 12 10 0 34 130 36 1 6 27 8 8 12 0 12 11 0 37 543 39 7 6 30 5 8 13 2 12 12 0 40 956 43 3 6 33 3 8 14 4...

Page 21: ...sed Blade Damper And Shaft 10336604 Pneumatic Tubing Tees and Caps PNEUMATIC TUBING TEES AND CAPS PART NUMBER Tee 1 4 Connects Pneumatic Tubing Each 42150011 Cap 1 4 for Pneumatic Tubing Each 42160081 Tubing 1 4 Red for Pneumatic Controls 1 Foot Length 61510035 Tubing 1 4 Green for Pneumatic Controls 1 Foot Length 61510234 Tubing 1 4 Yellow for Pneumatic Controls 1 Foot Length 61510260 Tubing 1 4 ...

Page 22: ...ect Switch 60A Assembly Does not include Snap In Neutral Block 31453102 Disconnect Neutral Block 30A Snap In 10341201 Disconnect Neutral Block 60A Snap In 10341202 Magnetic Contactor 30A 24V Coil 1 Pole DIGITAL ANALOG 10323601 Magnetic Contactor 30A 24V Coil 2 Pole DIGITAL ANALOG 10054401 Magnetic Contactor 60A 24V Coil 2 Pole DIGITAL ANALOG 10162501 Solid State Relay 1 Pole 50A AC Volt 15018001 E...

Page 23: ... RH 00 20065 02 LH Unit Size 7 8 00 20031 02 RH 00 20066 02 LH Unit Size 9 10 00 20032 02 RH 00 20067 02 LH Unit Size 12 00 20033 02 RH 00 20068 02 LH Unit Size 14 00 20043 02 RH 00 20069 02 LH Unit Size 16 00 20044 02 RH 00 20070 02 LH Unit Size 22 00 20050 02 RH 00 20071 02 LH LMHS WATER COILS 4 ROW PART NUMBER Unit Size 4 6 00 20056 02 RH 00 20058 02 LH Unit Size 7 8 00 20047 02 RH 00 20059 02 ...

Page 24: ...tact your local Krueger representative or visit us on the web at www krueger hvac com CRITICAL ROOM SOLUTIONS CHILLED BEAMS DISPLACEMENT VENTILATION UNDERFLOOR Underfloor Diffusers Underfloor Terminal Units TERMINAL UNITS Single Duct Fan Powered Dual Duct Bypass Retrofit FAN COILS BLOWER COILS Horizontal Vertical Stack DIFFUSERS Plaque Architectural Louvered Perforated Modular Core Linear Slot Ple...

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