Daikin DM92SN, Service Instructions Manual

Page 1: ...this manual should service the equipment The manufacturer will not be responsible for any injury or property damage arising from improper service or service procedures If you service this unit you as...

Page 2: ...RDS AND LABELS WARNING This unit should not be connected to or used in conjunction with any devices that are not design certified for use with this unit or have not been tested and approved by the man...

Page 3: ...tly a fire or explosion may result causing property damage personal injury or loss of life do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appli...

Page 4: ...ON MARCHE LEVER SHOWN INLET DU GAZ IN ON POS ARRIVEE DU GAZ INLET ARRIVEE GAS MANUAL GAS IN ON POS LEVER SHOWN MANUAL GAS INLET LEVER SHOWN ON MARCHE MANUAL GAS MANUEL EN POS DU GAZ ARRIVEE IN ON POS...

Page 5: ...itial Release B 1st Revision Configuration M Upflow Horizontal Major Revision C Downflow Horizontal A Initial Release B 1st Revision Nox AFUE 80 80 AFUE 92 92 AFUE 96 96 AFUE 97 97 AFUE Cabinet Width...

Page 6: ...arge process in Step 2 Use caution not to recharge your body with static electricity i e do not move or shuffle your feet do not touch ungrounded objects etc If you come in contact with an ungrounded...

Page 7: ...unit overfiring POSITION SIDES REAR FRONT BOTTOM FLUE TOP Up ow 0 0 1 C 0 1 Horizontal 6 0 1 C 0 4 POSITION SIDES REAR FRONT BOTTOM FLUE TOP Down ow 0 0 1 NC 0 1 Horizontal 6 0 1 C 0 4 DM92SN DM96SN...

Page 8: ...a Propane Gas Tanks and Piping WARNING Propane gas is heavier than air and any leaking gas can settle in any low areas or confined spaces To prevent property damage personal injury or death due to fir...

Page 9: ...erflows electrical connection with the junction box located inside the burner compartment To make electrical connections through the opposite side of the furnace the junction box must be relocated to...

Page 10: ...e junction box perform the following steps 1 Remove the burner compartment door 2 Remove and save the two screws securing the junction box to the side panel 3 Relocate junction box and associated plug...

Page 11: ...lows simultaneous operation of two furnaces and forces the indoor blower motors of each furnace to operate synchronously into a common duct system Using the twinning function will require only field i...

Page 12: ...ended that a LPLP03 kit also be installed The use of this kit will prevent the furnace from firing when the LP gas supply pressure is too low to support proper combustion All conversions must be perfo...

Page 13: ...he cabinet A semi rigid connector to the gas piping may be used from there Use listed gas appliance connectors in accordance with their instructions Connectors must be fully in the same room as the fu...

Page 14: ...ve before pressure testing supply piping system with test pressures equal to or less than 1 2 psig 3 48 kPA WARNING To avoid the possibility of explosion or fire never use a match or open flame to tes...

Page 15: ...closed return duct system must be used with the return duct connected to the furnace NOTE Ductwork must never be attached to the back of the furnace For upflow installations requiring 1800 CFM or mor...

Page 16: ...RS AFTER REMOVING SHEET METAL CUT USING TIN SNIPS PRESS OUT BY HAND SCRIBE LINES OUTLINING DUCT FLANGES Duct Flange Cut Outs Figure 12 When the furnace is used in connection with a cooling unit the fu...

Page 17: ...d two side returns or 20 X 25 filter on bottom return or combination side bottom if furnace is connected to a cooling unit over 4 tons nominal capacity Change filters before occupants take ownership o...

Page 18: ...imed prior to furnace startup To prime fill both sides of the drain trap with water This ensures proper furnace drainage upon startup and prohibits the possibility of flue gases escaping through the d...

Page 19: ...The gas valve is de energized The inducer remains energized for the post purge period 15 seconds The indoor blower runs for the selected off delay period 90 seconds by default adjustable from 30 180 s...

Page 20: ...period the cool circulator and air cleaner relay are de energized Cooling Mode Speed Selection To change the main blower speed in COOLING mode follow the following steps 1 Press the left or right swit...

Page 21: ...DECK SCREWS SLOTS IN FILTER CLEAR SCREWS ON UNIT FRONT OF UNIT RETURN AIR CUTOUT AREA LOWER EDGE SCREW FILTER RACK ASSEMBLY FACE FILTER OPENING TOWARDS FRONT OF UNIT UNIT SIDE PANEL BASE OF UNIT EFR0...

Page 22: ...in this manual under Vent Flue and Combustion Air Pipe Terminations for more information or consult the Installation and Operating Instructions IO 619 Vent Maintain 12 18 for Canada minimum clearance...

Page 23: ...are NOT intended for use with single pipe indirect vent installations These vent kits must terminate outside the structure and may be installed with the intake and exhaust pipes located side by side o...

Page 24: ...sformers VOLT OHM METER G ND PRIMARY SECONDARY TRANSFORMER R C METER READS 24 VOLTS LINE VOLTAGE NEUTRAL LINE VOLTAGE L1 HOT VOLT OHM METER METER READS 120 VOLTS VOLT OHM METER C R G ND N L1 VOLT OHM...

Page 25: ...condensate Use longest radius fittings possible If using 3 venting make the transition from 2 to 3 as close as practically possible Make sure there is no flue gas recirculation into the combustion ai...

Page 26: ...ty Ignition Control Test Control S 313 Gas Valve or Gas Supply Shut Off Turn Valves to On Position S 317 Faulty Induced Draft Blow er Test Induced Draft Motor S 303 Faulty Blow er Motor PSC Test Blow...

Page 27: ...G on the integrated ignition control 5 With the blower motor in operation the voltage should be 115 volts 10 percent 6 If the reading falls below the minimum voltage check the line wire size Long runs...

Page 28: ...A good capacitor will have a reading within 5 of the rated value S 16A Checking Air Circulator Blower Motor WARNING Disconnect ALL power before servicing 1 Remove blower compartment door to gain acces...

Page 29: ...ss air CFM being delivered the greater the rise The temperature rise should be adjusted in accordance to a given furnace specifications and its external static pressure An incorrect temperature rise m...

Page 30: ...ontinuous unless heat exchanger temperature is above limit control setting If not as above replace the control VOLT OHM METER COLOR IDENTIFYING TAB Testing Primary Limit Control 90 Furnaces 4 After co...

Page 31: ...t close after manually resetting it must be replaced 6 Measure the voltage between each side of the rollout control and ground during the ignition attempt If a roll out switch has tripped it is import...

Page 32: ...hould be tested on the furnace with 24 VAC connected to the gas valve and manometers reading supply line and manifold pressures S 305 Checking Main Burners Burners have been redesigned for 34 5 chassi...

Page 33: ...al power and shut off gas supply 1 After turning off gas to furnace at the manual gas shutoff valve external to the furnace remove burner compartment door to gain access to the gas valve 2 Connect a c...

Page 34: ...t pressure tap Refer to Measuring Gas Pressure Single Stage Valves figure for single stage valve outlet pressure tap connections WARNING Line Voltage now present 3 Turn ON the gas and electrical power...

Page 35: ...el VR8215 Gas Rate Range Nominal High Stage 9 7 to 10 3 w c 10 0 w c Low Stage 5 7 to 6 3 w c 6 0 w c Propane Gas Manifold Gas Pressure S 308 Checking Hot Surface Ignitor Single stage furnaces use a 1...

Page 36: ...mproper orifice size check orifice for obstruction S 310 Checking Pressure Switch The pressure control is a safety device to prevent the combustion cycle from occurring with inadequate venting caused...

Page 37: ...ctor and neutral located on circuit board No voltage check for loose connection in the 2 pin connector or replace ignition control 4 If voltage is present in Steps 1 through 3 and the induced draft bl...

Page 38: ...performance WARNING HIGH VOLTAGE Disconnect ALL power before servicing removing the filter or performing any other maintenance Multiple power sources may be present Failure to do so may cause propert...

Page 39: ...sual check of the burner flames Turn the furnace on at the thermostat Wait a few minutes since any dislodged dust will alter the normal flame appearance Flames should be stable quiet soft and blue wit...

Page 40: ...1 20 05 1 41 0130F00480 DM96SN1005CNAA 0 10 05 0 25 0 97 05 1 12 0130F00479 DM96SN1205DNAA 0 10 05 0 25 0 75 07 0 92 0130F00469 DC96SN0403BNAA 0 08 04 0 16 1 49 07 1 70 0130F00484 DC96SN0603BNAA 0 10...

Page 41: ...nts can be made in 7 Secs increments from0 to 35 Secs Cool Off Delay Delay Seconds Default set at 65 Secs Adjustments can be made in 5 Secs increments from 0 to 120 Secs Blower Speed for Gas Heat Mode...

Page 42: ...42 1 STAGE STATUS CODES STATUS MENU Idle Continous Fan Compressor Cooling Low Stage Compressor Cooling High Stage Gas heat Single Stage Control OEM test Mode Mode Main Menu...

Page 43: ...anger Check circulator blower speed and performance Blocked filters restrictive ductwork improper circulator blower speed or failed circulator blower motor Correct speed or replace blower motor if nec...

Page 44: ...ontrol module Blown fuse or tripped circuit breaker Correct condition which caused fuse to open replace fuse Integrated control module is non functional Replace non functional integrated control modul...

Page 45: ...1269 1206 1133 1063 999 934 861 F06 1796 1744 1691 1638 1584 1532 1473 1422 F07 1874 1823 1775 1729 1675 1621 1567 1512 F08 1798 1754 1719 1672 1627 1585 1546 1497 F09 1991 1947 1900 1854 1808 1759 1...

Page 46: ...1338 1269 1206 1133 1063 999 934 861 F06 1796 1744 1691 1638 1584 1532 1473 1422 F07 1874 1823 1775 1729 1675 1621 1567 1512 F08 1798 1754 1719 1672 1627 1585 1546 1497 F09 1991 1947 1900 1854 1808 1...

Page 47: ...4 1309 1260 F05 1338 1269 1206 1133 1063 999 934 861 F06 1796 1744 1691 1638 1584 1532 1473 1422 F07 1874 1823 1775 1729 1675 1621 1567 1512 F08 1798 1754 1719 1672 1627 1585 1546 1497 F09 1991 1947 1...

Page 48: ...45 1534 46 1478 48 1415 50 1357 1299 1246 F04 1600 44 1555 46 1505 47 1460 49 1412 50 1364 1309 1260 F01 1176 N A 1107 N A 1037 N A 969 N A 891 N A 825 753 692 F02 1773 42 1721 43 1671 44 1621 46 157...

Page 49: ...039 1008 F05 874 828 791 750 703 655 602 547 F06 950 908 865 826 786 739 689 638 F07 1097 1056 1019 988 952 921 880 842 F08 1166 1127 1092 1060 1027 994 960 926 F09 1407 1373 1338 1308 1282 1253 1229...

Page 50: ...3 1596 1538 1480 1422 1362 1306 1247 F05 1496 1437 1376 1315 1250 1189 1126 1056 F06 1640 1587 1527 1471 1414 1357 1294 1235 F07 1955 1937 1909 1860 1813 1765 1712 1662 F08 2086 2039 1991 1944 1896 18...

Page 51: ...070 1039 1008 F05 874 828 791 750 703 655 602 547 F06 950 908 865 826 786 739 689 638 F07 1097 1056 1019 988 952 921 880 842 F08 1166 1127 1092 1060 1027 994 960 926 F09 1407 1373 1338 1308 1282 1253...

Page 52: ...1653 1596 1538 1480 1422 1362 1306 1247 F05 1496 1437 1376 1315 1250 1189 1126 1056 F06 1640 1587 1527 1471 1414 1357 1294 1235 F07 1955 1937 1909 1860 1813 1765 1712 1662 F08 2086 2039 1991 1944 1896...

Page 53: ...097 1070 1039 1008 F05 874 828 791 750 703 655 602 547 F06 950 908 865 826 786 739 689 638 F07 1097 1056 1019 988 952 921 880 842 F08 1166 1127 1092 1060 1027 994 960 926 F09 1407 1373 1338 1308 1282...

Page 54: ...1520 1465 F04 1653 1596 1538 1480 1422 1362 1306 1247 F05 1496 1437 1376 1315 1250 1189 1126 1056 F06 1640 1587 1527 1471 1414 1357 1294 1235 F07 1955 1937 1909 1860 1813 1765 1712 1662 F08 2086 2039...

Page 55: ...31 122 F02 1823 37 1776 38 1720 40 1679 41 1642 41 1597 1553 1504 F03 1778 38 1729 39 1690 40 1648 41 1605 42 1558 1497 1449 F04 1722 40 1660 41 1609 42 1553 44 1507 45 1455 1402 1350 F01 809 N A 740...

Page 56: ...8 1078 F09 1427 1390 1362 1327 1297 1260 1224 1193 F01 715 658 589 524 465 412 360 279 F02 1415 1385 1355 1322 1291 1255 1219 1186 F03 1388 1360 1325 1291 1259 1223 1191 1157 F04 1290 1252 1215 1182 1...

Page 57: ...1755 1710 1664 1619 1574 1526 1479 F05 1475 1421 1369 1314 1260 1207 1152 1097 F06 1626 1578 1522 1475 1427 1353 1328 1283 F07 1693 1639 1588 1542 1491 1437 1390 1340 F08 1775 1723 1674 1629 1580 152...

Page 58: ...1118 1078 F09 1427 1390 1362 1327 1297 1260 1224 1193 F01 715 658 589 524 465 412 360 279 F02 1415 1385 1355 1322 1291 1255 1219 1186 F03 1388 1360 1325 1291 1259 1223 1191 1157 F04 1290 1252 1215 118...

Page 59: ...804 1755 1710 1664 1619 1574 1526 1479 F05 1475 1421 1369 1314 1260 1207 1152 1097 F06 1626 1578 1522 1475 1427 1353 1328 1283 F07 1693 1639 1588 1542 1491 1437 1390 1340 F08 1775 1723 1674 1629 1580...

Page 60: ...1154 1118 1078 F09 1427 1390 1362 1327 1297 1260 1224 1193 F01 715 658 589 524 465 412 360 279 F02 1415 1385 1355 1322 1291 1255 1219 1186 F03 1388 1360 1325 1291 1259 1223 1191 1157 F04 1290 1252 121...

Page 61: ...656 1610 F04 1804 1755 1710 1664 1619 1574 1526 1479 F05 1475 1421 1369 1314 1260 1207 1152 1097 F06 1626 1578 1522 1475 1427 1353 1328 1283 F07 1693 1639 1588 1542 1491 1437 1390 1340 F08 1775 1723 1...

Page 62: ...425 42 1370 1325 1271 F04 1537 39 1490 40 1447 41 1403 42 1354 44 1301 1247 1190 F01 1029 N A 959 N A 890 N A 811 N A 727 N A 647 579 511 F02 1814 33 1766 34 1722 34 1679 35 1637 36 1595 1555 1511 F03...

Page 63: ...ANUFACTURER S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING 3 IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE FURNACE MUST BE REPLACED IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A TEMP...