York DC SERIES Installation Manual Download Page 19 | Manualshive

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5120410-XIM-B-0216

Johnson Controls Unitary Products

19

Figure 20: Field Wiring Disconnect - Cooling Unit With/Without Electric Heat

Figure 21: Field Wiring Disconnect - Cooling Unit With Gas Heat

THREE
PHASE

POWER

SUPPLY

FACTORY OR FIELD

SUPPLIED DISCONNECT

GROUND

LUG

TERMINAL BLOCK TB1

L1

T1

L2

T2

T3

L3

THREE
PHASE

POWER

SUPPLY

FACTORY OR FIELD

SUPPLIED DISCONNECT

GROUND

LUG

CONTACTOR 1M

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Summary of Contents for DC SERIES

Page 1: ...eover 27 Single Enthalpy Changeover 27 Dual Enthalpy Changeover 27 Auto 28 Free Cooling Operation 28 Power Exhaust 28 Air Balance 42 Checking Air Quantity 42 Sequence Of Operation 48 Cooling Sequence Of Operation 48 No Outdoor Air Options 48 Cooling Operation Errors 49 Electric Heating Sequence Of Operations 50 Electric Heat Operation Errors 50 Gas Heating Sequence Of Operations 51 Ignition Contro...

Page 2: ...ce DC120 150 Cabinet Metric 47 30 Additional Static Resistance DC090 Cabinet Metric 47 31 Electric Heat Limit Setting 50 32 Electric Heat Anticipator Setpoints 51 33 Gas Heat Limit Settings 52 34 Gas Heat Anticipator Setpoints 52 35 Gas Rate Cubic Feet Per Hour 54 36 Gas Heat Stages 55 37 Ignition Control Flash Codes 56 38 Simplicity SE UCB Details 59 LIST OF FIGURES 1 Unit Shipping Bracket 6 2 Co...

Page 3: ...ent Be sure to follow all other applicable safety precautions and codes including ANSI Z223 1 or CSA B149 1 latest edition Wear safety glasses and work gloves Use quenching cloth and have a fire extinguisher available during brazing operations Inspection As soon as a unit is received it should be inspected for possible damage during transit If damage is evident the extent of the damage should be n...

Page 4: ...nd mechanical codes The furnace and its individual shut off valve must be disconnected from the gas supply piping system during any pressure testing at pressures in excess of 1 2 PSIG Pressures greater than 1 2 PSIG will cause gas valve damage resulting in a hazardous condition If it is subjected to a pressure greater than 1 2 PSIG the gas valve must be replaced The furnace must be isolated from t...

Page 5: ...not required for all units These four digits will not be assigned until a quote is requested or an order placed Honeywell Controller DFS APS CPC Controller DFS APS Simplicity Smart Equipment w Comm Card BACnet N2 Mod Bus 2 Pleated filters BAS Ready Unit with Economizer Shipping Bag Any Combination of Additional Options that Don t Have an Option Code Pre assigned AA None AB Phase Monitor AC Coil Gu...

Page 6: ...ots Figure 1 Unit Shipping Bracket 2 Turn each bracket toward the ground and the protective plywood covering will drop to the ground 3 Remove the condenser coil external protective covering prior to operation 4 Remove the toolless doorknobs and instruction packet prior to installation Figure 2 Condenser Covering Figure 3 Compressor Section 5 If a factory option convenience outlet is installed the ...

Page 7: ...itary Products 1 877 UPG SERV for guidance Additional accessories may be needed for stable operation at temperatures below 30 F Roof curbs in eight and fourteen inch heights Roof curbs for transitioning from York Sunline footprint to the DC Series footprints are also available field installed accessory Base rails w forklift slots three sides and lifting holes Compressor 2 access high efficiency co...

Page 8: ... care when moving the unit Do not remove any packaging until the unit is near the place of installation Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails Spreader bars whose length exceeds the largest dimension across the unit MUST be used across the top of the unit Units may be moved or lifted with a forklift Slotted openings in the base rails are pro...

Page 9: ...ocation lbs Shipping Operating X Y A B C D A B C D E F 090 7 5 DC 865 860 38 23 192 143 224 301 135 110 91 142 172 211 120 10 DC 1143 1138 47 5 25 5 245 209 305 357 168 151 136 198 219 244 150 12 5 DC 1202 1197 47 5 25 5 262 224 327 386 180 161 145 212 235 262 Table 3 Weights and Dimensions Metric Size KW Model Weight kg Center of Gravity mm 4 Point Load Location kg 6 Point Load Location kg Shippi...

Page 10: ...lable 8 tube 110 110 Table 5 DC090 150 Unit Accessory Weights Metric Unit Accessory Weight kg Shipping Operating Economizer 40 8 38 6 Power Exhaust 18 1 15 9 Electric Heat1 1 Weight given is for the maximum heater size available 54KW 22 2 22 2 Gas Heat2 2 Weight given is for the maximum number of tube heat exchangers available 8 tube 49 9 49 9 LEFT A 59 00 C D E F 4 19 27 31 89 00 21 19 11 38 15 3...

Page 11: ...sion in A B C D E F 090 42 89 22 1 8 18 3 16 15 3 16 6 3 16 120 50 3 4 89 30 3 16 24 3 16 17 3 16 6 3 16 150 50 3 4 90 30 3 16 24 3 16 17 3 16 6 3 16 Table 7 DC090 150 Unit Physical Dimensions Metric Unit Model Number Dimension mm A B C D E F 090 1067 2261 562 462 386 157 120 1289 2261 767 614 437 157 150 1289 2261 767 614 437 157 ...

Page 12: ...90 150 Unit Clearances Metric Direction Distance mm Direction Distance mm Top1 1 Units must be installed outdoors Over hanging structure or shrubs should not obscure condenser air discharge outlet 1829 Right 305 Front 914 Left 914 Rear 914 Bottom2 2 Units may be installed on combustible floors made from wood or class A B or C roof covering materials 0 42 1067mm CABINET Ø 3 126 Ø 2 000 3 184 4 727 ...

Page 13: ...om gas supply entry FRONT RETURN AIR SUPPLY AIR RIGHT LEFT 20 1 8 19 1 8 17 1 8 6 13 16 6 13 16 32 11 16 14 1 2 16 3 8 18 1 16 25 9 16 12 5 16 27 1 2 24 21 18 89 2261 830 173 173 690 457 610 533 511 486 435 368 416 459 649 313 NOTE XXX Indicates Millimeters Ø 2 469 3X Ø 0 875 Bottom power control and convenience outlet wiring entry 22 63 ...

Page 14: ...090 120 Unit Side Duct Openings Disconnect Swith Cover Power Entry Ø 2 1 2 Control Entry Ø 7 8 Power Entry Ø 2 1 2 Convenience Outlet Cover Convenience Outlet Power Entry Ø 7 8 FRONT 64 22 64 22 Dot Plugs 5 5 32 31 11 16 2 31 32 18 1 4 Return Air Supply Air A B C D 464 75 805 131 NOTE XXX Indicates Millimeters ...

Page 15: ...mensions Metric Unit Model Number Dimension mm A B C D 090 705 306 698 406 120 718 459 718 464 150 718 459 718 464 4 5 16 30 3 8 772 110 5 0 1 2 1 2 8 5 3 0 7 6 0 2 0 5 1 0 8 0 5 8 2 0 5 0 6 1 5 0 2 T Y P 5 0 I N S U L A T E D D E C K U N D E R C O M P R E S S O R S E C T I O N I N S U L A T E D D E C K U N D E R C O N D E N S E R S E C T I O N F R O N T R I G H T S U P P L Y R E T U R N 2 0 5 1 0...

Page 16: ...t application no duct cover changes are necessary For side duct application remove the side duct covers and install over the bottom duct openings The panels removed from the side duct connections are designed to be reused by securing each panel to its respective downflow opening But keep in mind that the supply panel is installed with the painted surface UP facing the heat exchanger while the retu...

Page 17: ...ipe threads Install condensate drain line from the 3 4 inch NPT female connection on the unit to an open drain Figure 19 Condensate Drain Compressors The compressor used in this product is specifically designed to operate with R 407C Refrigerant and cannot be interchanged Filters Two inch filters are supplied with each unit One inch filters may be used with no modification to the filter racks Filt...

Page 18: ... mounting of a disconnect on the unit please confirm compliance with local code before mounting a disconnect on the unit Electrical line must be sized properly to carry the load USE COPPER CONDUCTORS ONLY Each unit must be wired with a separate branch circuit fed directly from the meter panel and properly fused Refer to Figures 20 21 and 22 for typical field wiring and to the appropriate unit wiri...

Page 19: ...oling Unit With Without Electric Heat Figure 21 Field Wiring Disconnect Cooling Unit With Gas Heat THREE PHASE POWER SUPPLY FACTORY OR FIELD SUPPLIED DISCONNECT GROUND LUG TERMINAL BLOCK TB1 L1 T1 L2 T2 T3 L3 THREE PHASE POWER SUPPLY FACTORY OR FIELD SUPPLIED DISCONNECT GROUND LUG CONTACTOR 1M ...

Page 20: ...unit to the thermostat and back to the unit 18 AWG 150 Feet 380 415 3 50 units control transformers are factory wired for415v power supply respectively Change tap on transformer for 380 3 50 operation See unit wiring diagram OCC C RC G Y2 Y1 W2 W1 X R THERMOSTAT TERMINALS CONTROL TERMINAL BLOCK TERMINALS ON A LIMITED NUMBER OF THERMOSTATS 1 4 3 1 2 4 Second stage ŚĞĂƟŶŐ Ŷot required on single stag...

Page 21: ...0 45 2TP04523650 21 3 32 4 47 0 49 8 49 7 52 6 50 50 50 60 2TP04525450 33 8 51 4 70 7 73 6 73 4 76 3 80 80 80 80 415 9 6 80 1 1 5 2 7 5 2 2 None 29 0 31 3 31 2 33 5 35 40 40 40 2TP04521850 13 5 18 8 30 0 32 9 32 7 35 6 35 40 40 40 2TP04522450 17 9 24 9 37 6 40 5 40 4 43 3 40 45 45 45 2TP04523650 25 4 35 3 50 7 53 5 53 4 56 3 60 60 60 60 2TP04525450 40 4 56 2 76 8 79 6 79 5 82 4 80 80 80 90 Electri...

Page 22: ... 810 40 1020 40 1020 Face Area ft 2 m2 10 6 0 98 13 2 1 23 13 2 1 23 CONDENSER FANS 2 per Unit Propeller Dia mm in ea 24 610 24 610 24 610 Motor Hp kW ea 3 4 0 56 3 4 0 56 3 4 0 56 Airflow CFM m3 s ea 3700 1 75 3700 1 75 3700 1 75 CONDENSER COILS 2 per Unit Rows each 1 1 2 Fins Per Inch 2 54 mm 20 20 20 Height in mm 28 711 44 1120 44 1120 Face Area ft 2 m2 9 2 86 14 5 1 35 14 5 1 35 Refrigerant Ch...

Page 23: ...lied where required by the factory Some kW sizes require fuses and others do not refer to Tables 15 and 16 for minimum CFM limitations and to Table 13 for electrical data Table 15 Electric Heat Minimum Supply Air Imperial Size Tons Model Voltage Minimum Supply Air CFM Heater kW 18 24 36 54 120 10 DC 380 415 3 50 3000 3000 3000 3500 150 12 5 DC 380 415 3 50 3750 3750 3750 3750 Table 16 Electric Hea...

Page 24: ...of the gas may differ with locality The value should be checked with the local gas utility Figure 23 Side Entry Gas Piping Figure 24 Bottom Entry Gas Piping OPTIONAL COIL GUARD SHOWN OPTIONAL COIL GUARD SHOWN Table 17 Gas Heat Minimum Supply Air Imperial Size Ton Model Heat Size Supply Air CFM Cooling Heating Min Max Min Max 090 7 5 DC 10 2250 3750 2250 3750 15 2250 3750 2250 3750 120 10 DC 15 300...

Page 25: ...ll gas heat units are shipped from the factory equipped for natural gas use only The unit may be converted in the field for use with LP gas with accessory kit model number 1NP0442 Table 19 Gas Pipe Sizing Capacity of Pipe Length of Pipe ft m Nominal Iron Pipe Size 3 4 in 1 in 1 1 4 in 10 3 278 7 8 520 14 7 1050 29 7 20 6 190 5 3 350 9 9 730 20 6 30 9 1 152 4 3 285 8 590 16 7 40 12 1 130 3 6 245 6 ...

Page 26: ...upply air configuration has the sensor component mounted in the blower section with its control mod ule mounted in the return air compartment The detector must be tested and maintained on a regular basis according to NFPA 72 requirements and cleaned at least once a year For specific troubleshooting and maintenance LP gas is an excellent solvent and will quickly dissolve white lead and most standar...

Page 27: ...ooling load operation a direct acting pressure modulating bypass control valve installed on the system 1 discharge line is used to divert high temperature high pressure refrigerant around the TXV in order to maintain a desired minimum evaporator pressure The opening pressure of the bypass valve is adjustable between 95 and 115 psig with a factory setting of 105 psig HGBP is optional with CV units ...

Page 28: ... If at any time the economizer output drops below 100 the timer stops and resets when the economizer output returns to 100 Once a compressor output is turned ON the economizer dampers continue to modulate to control the supply air temperature to the Economizer Setpoint At no time will a compressor output be turned ON if the economizer output is less than 100 even if the differential between zone o...

Page 29: ...nomizer actuator position feedback Connects through circuit trace to 24V IN pin HOT C COM Mixed Air Temperature sensor input from 10KΩ 77 F Type III negative temperature coefficient thermistor MAT parameter reports input status F C 3 65 VDC reading MAT to COM with open circuit Read only use in current control revision IN1 MAT LEDs at left on upper edge of economizer board POWER POWER Green UCB pow...

Page 30: ...mper Used to ramp the power exhaust fan VFD position the discharge damper actuator COM 24 VAC common 0 10 VDC negative for the power exhaust variable frequency drive discharge damper modulating power exhaust actuator Connects through circuit trace to 24V IN pin COM 24V 24 VAC hot supplied for the discharge damper modulating power exhaust actuator and economizer actuator Connects through circuit tr...

Page 31: ... positive input from the Indoor Air Quality sensor IAQRange parameter sets the CO2 parts per million measured by the indoor air quality sensor when it outputs 10 VDC IAQ parameter reports input status 0 5000ppm Used for demand ventilation functions if the NetIAQ parameter indicates Unrel C COM 24 VAC common 0 10 VDC negative for the indoor air quality sensor Connects through circuit trace to 24V I...

Page 32: ...point of power connection is misphased See PHASING Belt Tension The tension on the belt should be adjusted as shown in Figure 26 R 24V 24 VAC hot supplied for the building pressure sensor Connects through circuit trace to 24V IN pin HOT IN8 BLDG PRES 0 5 VDC positive input from the Building Pressure sensor BldgPres parameter reports input status 250 250 w 062 062kPa Used for modulating power exhau...

Page 33: ... at high altitude is less dense less static pressure will be generated and less power will be required than a similar application at sea level Air density correction factors are shown in Table 20 and Figure 30 A A A B SPAN LENGTH DEFL FORCE C NEVER LOOSEN Procedure for adjusting belt tension 1 Loosen six nuts top and bottom A 2 Adjust by turning B 3 Never loosen nuts C 4 Use belt tension checker t...

Page 34: ...n kW Out kW 50 1 51 1 49 1 19 1 36 1 31 1 05 100 1 74 2 23 1 78 1 64 1 95 1 55 1 55 1 75 1 40 1 46 1 55 1 24 1 38 1 37 1 10 1 27 1 21 0 97 149 1 64 2 11 1 68 1 53 1 83 1 46 1 44 1 64 1 39 1 34 1 44 1 15 1 25 1 27 1 01 1 14 1 12 0 89 199 1 53 1 98 1 58 1 42 1 72 1 38 1 32 1 52 1 38 1 22 1 33 1 07 1 12 1 17 0 94 0 99 1 02 0 81 249 1 42 1 83 1 46 1 30 1 58 1 27 1 20 1 40 1 28 1 09 1 23 0 98 0 95 1 05...

Page 35: ...BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP CFM Watts BHP 0 35 4820 2675 2 87 4582 2362 2 53 4319 2080 2 23 4086 1842 1 98 3863 1648 1 77 3590 1430 1 53 0 6 4522 2496 2 68 4307 2215 2 38 4025 1941 2 08 3713 1678 1 80 3464 1499 1 61 3149 1291 1 38 0 8 4223 2332 2 50 3973 2062 2 21 3656 1783 1 91 3363 1550 1 66 3026 1350 1 45 1 0 3913 2174 2 33 3679 1923 2 06 3262 1619 1 74 2721 1330 1 43 1 2 3521...

Page 36: ... 15 3057 1642 1 76 1 8 4461 3111 3 34 4070 2621 2 81 3552 2160 2 32 2 0 3997 2782 2 98 3400 2219 2 38 2 2 3496 2480 2 66 DC120 35 kW Optional Motor Side Duct Metric ESP Pa Turns Open 0 1 2 3 4 5 m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW 87 2 4 2 50 2 00 149 2 40 2 75 2 20 2 19 2 31 1 85 199 2 40 2 94 2 35 2 28 2 58 2 07 2 05 2 15 1 ...

Page 37: ... 42 3665 1926 2 07 1 6 4739 3316 3 56 4482 2892 3 10 4098 2474 2 65 1 8 4461 3111 3 34 4070 2621 2 81 2 0 3997 2782 2 98 DC150 44 kW Side Duct Metric ESP Pa Turns Open 0 1 2 3 4 5 m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW 87 2 90 4 17 3 34 2 79 3 77 3 02 2 65 3 31 2 65 2 55 2 95 2 36 2 34 2 50 2 00 149 2 76 3 93 3 15 2 67 3 57 2 85 ...

Page 38: ...Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW 50 1 64 2 11 1 68 1 53 1 83 1 46 1 44 1 64 1 39 1 34 1 44 1 15 1 25 1 27 1 01 1 14 1 12 0 89 100 1 53 1 98 1 58 1 42 1 72 1 38 1 32 1 52 1 38 1 22 1 33 1 07 1 12 1 17 0 94 0 99 1 02 0 81 149 1 42 1 83 1 46 1 30 1 58 1 27 1 20 1 40 1 28 1 09 1 23 0 98 0 95 1 05 0 84 0 77 0 88 0 70 199 1 30 1 72 1 38 1 20 1 51 1 21 1 05 1 29 1 17 0 89 1 08...

Page 39: ... CFM Watts BHP CFM Watts BHP CFM Watts BHP 0 2 4543 2511 2 69 4362 2250 2 41 4139 1996 2 14 3911 1766 1 89 3719 1594 1 71 3518 1407 1 51 0 4 4311 2381 2 55 4115 2127 2 28 3862 1871 2 01 3611 1644 1 76 3386 1471 1 58 3153 1293 1 39 0 6 4032 2232 2 39 3804 1982 2 13 3508 1720 1 84 3246 1506 1 61 2971 1332 1 43 0 8 3706 2068 2 22 3428 1818 1 95 3078 1548 1 66 1 0 3333 1892 2 03 2989 1644 1 76 1 2 291...

Page 40: ...24 3084 1552 1 66 1 8 3748 2629 2 82 3455 2243 2 41 3078 1904 2 04 2 0 3406 2425 2 60 3114 2051 2 20 2 2 3044 2228 2 39 DC120 35 kW Optional Motor Bottom Duct Metric ESP Pa Turns Open 0 1 2 3 4 5 m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW m3 s In kW Out kW 50 2 34 2 67 2 13 2 17 2 29 1 83 100 2 32 2 47 1 98 2 23 2 51 2 01 2 05 2 15 1 72 149 2 33 3 02 ...

Page 41: ...4450 2353 2 52 4048 1991 2 13 0 8 5155 3652 3 92 4908 3197 3 43 4668 2841 3 05 4411 2501 2 68 4151 2183 2 34 3717 1829 1 96 1 0 4915 3456 3 71 4651 3013 3 23 4388 2656 2 85 4035 2281 2 45 3825 2008 2 15 1 2 4653 3253 3 49 4377 2823 3 03 4089 2467 2 65 3608 2051 2 20 1 4 4372 3046 3 27 4087 3621 2 82 3771 2277 2 44 1 6 4070 2837 3 04 3780 2437 2 61 1 8 3748 2629 2 82 DC150 44 kW Bottom Duct Metric ...

Page 42: ...he return air duct as close to the inlet of the unit as possible and another in the supply air duct as close to the outlet of the unit as possible 2 Using the whole drilled in step 1 insert eight inches of 1 4 inch metal tubing into the airflow of the return and supply air ducts of the unit NOTE The tubes must be inserted and held in position perpendicular to the airflow so that velocity pressure ...

Page 43: ...see SUPPLY AIR DRIVE ADJUSTMENT 8 After reading has been obtained remove the tubes and seal holes 9 Tighten blower pulley and motor sheave set screws after any adjustments Re check set screws after 10 12 hrs run time is recommended NOTE With the addition of field installed accessories repeat this procedure Figure 27 Dry Coil Delta P 50 Cabinet Failure to properly adjust the total system air quanti...

Page 44: ...trols Unitary Products Figure 28 Dry Coil Delta P 42 Cabinet PREDATOR 42 CABINET 50 HZ UNITS INDOOR COIL PRESSURE DROP VS AIRFLOW 0 2 0 25 0 3 0 35 0 4 0 5 0 55 0 45 2000 2500 3000 3500 4000 4500 Airflow CFM Dry Coil Delta P IWG DC 090 ...

Page 45: ...able systems effects that can result in loss of airflow Even small changes in blower speed can result in substantial changes in static pressure and BHP BHP and AMP draw of the blower motor will increase by the cube of the blower speed Static pressure will increase by the square of the blower speed Only qualified personnel should make blower speed changes strictly adhering to the fan laws Table 26 ...

Page 46: ... 0 23 0 04 0 20 0 23 0 24 0 28 4100 0 25 0 04 0 22 0 25 0 26 0 31 4300 0 28 0 05 0 24 0 28 0 29 0 34 4500 0 30 0 05 0 26 0 30 0 31 0 37 4700 0 33 0 05 0 29 0 33 0 34 0 40 4900 0 36 0 05 0 31 0 35 0 37 0 43 5100 0 39 0 06 0 34 0 38 0 40 0 46 5300 0 42 0 06 0 37 0 41 0 43 0 49 5500 0 45 0 06 0 40 0 44 0 46 0 53 5700 0 48 0 06 0 43 0 47 0 49 0 56 5900 0 52 0 07 0 46 0 50 0 53 0 59 6100 0 56 0 07 0 49...

Page 47: ...5 1 93 62 1 9 9 54 6 62 1 64 6 77 0 1 02 69 5 12 4 59 6 69 5 72 0 84 4 2 12 74 5 12 4 64 6 74 5 77 0 91 9 2 21 82 0 12 4 72 0 82 0 84 4 99 3 2 30 89 4 12 4 77 0 86 9 91 9 106 8 2 40 96 9 14 9 84 4 94 4 99 3 114 2 2 49 104 3 14 9 91 9 101 8 106 8 121 7 2 59 111 8 14 9 99 3 109 3 114 2 131 6 2 68 119 2 14 9 106 8 116 7 121 7 139 1 2 77 129 1 17 4 114 2 124 2 131 6 146 5 2 87 139 1 17 4 121 7 131 6 1...

Page 48: ...of cooling the low voltage control circuit from R to Y2 is completed The control board energizes the first available compressor If free cooling is being used for the first stage of cooling compressor 1 is energized If compressor 1 is active for first stage cooling or the first compressor is locked out compressor 2 is energized In free cooling mode if the call for the second stage of cooling contin...

Page 49: ...e switch open three times within two hours of operation the UCB will lock out the associated compressor If the other compressor is inactive the condenser fans will be de energized Low Pressure Limit Switch The low pressure limit switch is not monitored during the initial 30 seconds of a cooling system s operation For the following 30 seconds the UCB will monitor the low pressure switch to ensure i...

Page 50: ...stat setting higher than the conditioned space temperature Electric Heating Sequence Of Operations The following sequence describes the operation of the electric heat section Two stage heating a Upon a call for first stage heat by the thermostat the heater relay RW1 will be energized After completing the specified fan on delay for heating the UCB will energize the blower motor If the second stage ...

Page 51: ...ed between ignition attempts If the unit fails after three ignition attempts the furnace is locked out for one hour The furnace is monitored during this one hour period for unsafe conditions Recycle Operation When a flame is lost after the flame stabilization period a recy cle operation occurs If the unit fails after five recycle attempts the furnace is locked out for one hour Gas Heating Operatio...

Page 52: ...B monitors the Pressure and Rollout switches of gas heat units The control circuit includes the following safety controls Pressure Switch PS Once the draft motor has reached full speed and closes the pressure switch during a normal ignition sequence if the pressure switch opens for 2 seconds the GV will be de energized the ignition cycle is aborted and the ICB flashes the appropriate code See Tabl...

Page 53: ... 4 Turn ON electric power to unit 5 If thermostat set temperature is above room temperature the main burners will ignite If a second stage of heat is called for the main burners for second stage heat will ignite for the second stage heat Post Start Checklist After the entire control circuit has been energized and the heating section is operating make the following checks 1 Check for gas leaks in t...

Page 54: ...Be sure not to under fire the furnace on first stage If in doubt it is better to leave the first stage of the furnace slightly over fired greater than 60 input Repeat Steps 1 6 NOTE To find the Btu input multiply the number of cubic feet of gas consumed per hour by the Btu content of the gas in your particular locality contact your gas company for this information as it varies widely from area to ...

Page 55: ...rise has been determined the CFM can be calculated as follows After about 20 minutes of operation determine the furnace temperature rise Take readings of both the return air and the heated air in the ducts about 6 feet from the furnace where they will not be affected by radiant heat Increase the blower CFM to decrease the temperature rise decrease the blower CFM to increase the rise See SUPPLY AIR...

Page 56: ...ol HEARTBEAT Normal Operation 1 Not Applicable 2 Pressure Switch Stuck Closed Pressure Switch 3 Pressure Switch Failed To Close Venter Pressure Switch Vent Blocked 4 Limit Switch Open Main Limit AUX Limit 5 Flame Present With Gas Off First Stage Gas Valve Energized With W1 Off Second Stage Gas Valve Energized With First Stage Gas Valve Off Gas Valve 6 Ignition Lockout Gas Flow Gas Pressure Gas Val...

Page 57: ... is on the top Status line hit the ENTER button This action steps the LCD display into the status mode Hit ENTER to view the status menu Press Enter Step 2 7KH UVW LWHP XQGHU WKH status menu is DVent Mode This is the demand ventilation mode ENTER CANCEL JOY C PWR 7 7 77 DVent Mode OprST Press Enter Step 3 When the cursor is on the DVent Mode hit ENTER to view the status of this mode In this case a...

Page 58: ...ER CANCEL JOY C PWR 7 7 77 Clg Engaged LeadLag Engaged Press Enter Joy Stick Down 2 Step 6 By toggling down twice the screen reaches the ClgOcc SP screen or Cooling Occupied Set Point ENTER CANCEL JOY C PWR 7 7 77 LeadLag Engaged ClgOcc SP Press Enter T Step 8 In order to change set points push the toggle switch left or right Note The screen ÀDVKHV HIW GHFUHDVHV WKH YDOXH ULJKW increases In this d...

Page 59: ...B microprocessor connects through circuit trace to the SD 24 terminal SD 24 24 VAC hot out for factory accessory smoke detector condensate overflow and or user shutdown relay switching in series Connects through circuit trace to thermostat connection strip SD 24 A wiring harness jumper plug connecting SD 24 to SD R is in place if factory accessories for unit shutdown are not used this jumper plug ...

Page 60: ...t indicates 24 VAC is present at C and 24V terminals FAULT Red hard lockout networking error and firmware error indicator 1 2 second on off flashing indicates one or more alarm is currently active 1 10th second on off flashing indicates a networking error polarity addressing etc or a firmware error likely correctable with re loading from USB flash drive SA BUS Green UCB SA bus communication transm...

Page 61: ...5 VDC reading EC2 to EC2 with open circuit Used in suction line temperature safety Pinned connections on right edge of UCB RAH Return Air Humidity input from 0 10 VDC 0 100 RH sensor Input required for reheat units optional in all other units may be a communicated value Used in return air enthalpy calculation temperature humidity setpoint reset reheat operation DCT PRS Supply Duct Pressure input f...

Page 62: ...utput for indoor blower contactor coil indoor blower VFD enable relay coil Output with heat cool operation G input or schedule demand C1 24 VAC hot output for compressor 1 If demand is present and permissions allow compressor 1 operation output with compressor cooling comfort ventilation cooling reheat or heat pump heating demands C2 24 VAC hot output for compressor 2 Not effective for one stage c...

Page 63: ...enter of the board Positive of the 15 VDC reading to C circuit for powering an optional netstat and or Multi Touch gateway C Common for SA BUS power and communication circuits Also incorporated in the J8 6 pin phone jack connector at the left center of the board Negative of the SA BUS circuits Communication for SA BUS devices Also incorporated in the J8 6 pin phone jack connector at the left cente...

Page 64: ...FC Field Connected BUS BACnet MSTP communication circuit Earth ground reference of the cable to prevent interference on the FC bus BACnet MSTP communication circuit Item Selector in red housing at left on top edge of the communication board EOL switch End Of Line selector switch for the FC BUS BACnet MSTP communication circuit ON selected only for the UCB that is the terminus of the FC bus BACnet ...

Page 65: ... start up This confidence is supported by the 30 day dealer protection coverage portion of our standard warranty policy which states that Johnson Controls UPG will cover parts and labor on new equipment start up failures that are caused by a defect in factory workmanship or material for a period of 30 days from installation Refer to current standard warranty policy and warranty manual found on UPG...

Page 66: ...ull open position and the frequency drive is operating at 60 HZ Do not proceed with the equipment start up without the design CFM information Design Supply Air CFM __________________________ Design Return Air CFM ______________________________________ Design Outdoor Air CFM At Minimum Position ________________________________________________________ Total External Static Pressure _________________...

Page 67: ... and control complete Air Moving Inspection Completed See Notes Alignment of drive components Belt tension adjusted properly Blower pulleys tight on shaft bearing set screws tight wheel tight to shaft Pressure switch or transducer tubing installed properly Exhaust Inspection Powered Barometric Relief Completed See Notes Check hub for tightness Check fan blade for clearance Check for proper rotatio...

Page 68: ...y to increase of decrease the airflow to meet the design conditions If the motor pulley size was changed measure the outside diameters of the motor and blower pulleys and record those diameters here Blower Motor HP _______________________________ FLA________ RPM________ Pulley Pitch Diameter ______________Turns Out________ Final Turns Out________ Blower Pulley Pitch Diameter ________________ Fixed...

Page 69: ... Return Air Temperature ________________ F db ________________ F wb ________________ RH Mixed Air Temperature ________________ F db ________________ F wb ________________ RH Supply Air Temperature ________________ F db ________________ F wb ________________ RH Action Completed See Notes Prove Compressor Rotation 3 phase only by gauge pressure Prove High Pressure Safety All Systems Prove Low Pressu...

Page 70: ...___________________________________________________________________ _______________________________________________________________________________________________________ _______________________________________________________________________________________________________ _______________________________________________________________________________________________________ ____________________...

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