Johnson Controls ZS Series Installation Manual Download Page 17

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5566019-BIM-B-1118

Johnson Controls Ducted Systems

Roof curbs

Figure 15: ZS-06 through -12 roof curb

Figure 16: ZS-06 through -12 transition roof curb

8 or 14

50-1/2

80-5/8

Roof curb components

Item

Description

Return air

Supply air

Right side of the unit

Front side of the unit

2 typ.

Insulated deck under the condenser section

Insulated deck under the compressor section

76-5/8

50-1/2

30-1/2

64-1/4

59-1/4

23 4

80-5/8

Summary of Contents for ZS Series

Page 1: ...y of pipe 34 18 Gas heat minimum supply air 35 19 Supply air limitations 45 20 Altitude temperature correction factors 46 21 Airflow performance side duct application 48 22 Airflow performance bottom duct application 50 23 RPM selection 51 24 Indoor blower specifications 52 25 Power exhaust specifications 52 26 Motor sheave datum diameters 54 27 Additional static resistance 55 28 Electric heat lim...

Page 2: ...ety 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 Improper installation may create a condition where the operation of the product could cause personal injury or property damage Improper installation adjustment alteration service or maintenance can caus...

Page 3: ...d may be installed directly on combustible flooring or in the U S on wood flooring or Class A Class B or Class C roof covering materials For use with natural gas The unit can be converted to LP with a kit This product must be installed in strict compliance with the enclosed installation instructions and any applicable local state and national codes including but not limited to building electrical ...

Page 4: ...ard CG STD Filter 5 2 Pleated Filter CG 6 4 Pleated Filter CG A Std Cabinet E SSD SST Drain Pan R Reverse Drain Pan A No Economizer B Economizer w Barometric RLF D Economizer w Power EXH H Motorized Damper Outdoor Air Option 1 No Service Options 2 DSC Disconnect Switch 3 NCO Non PWR Conv Outlet 4 PCO Powered Conv Outlet 5 DSC NCO 6 DSC PCO A No Sensors B PHM Phase Monitor C DFS Dirty Filter Switch...

Page 5: ...gure 1 Unit shipping bracket 2 Turn each bracket toward the ground The protective plywood covering drops to the ground 3 Remove the condenser coil protective covering 4 Remove the toolless doorknobs and instruction packet see Figure 3 Figure 2 Condenser covering Figure 3 Compressor section 5 If a factory option convenience outlet is installed you must install the weatherproof outlet in the field T...

Page 6: ...late If components are added to a unit to meet local codes they are installed at the dealer s and or customer s expense The size of the unit for the proposed installation must be based on a heat loss heat gain calculation made according to the methods of the Air Conditioning Contractors of America ACCA This furnace is not to be used for temporary heating of buildings or structures under constructi...

Page 7: ...ilter access 2 in or 4 in filter options O Compressor 1 access high efficiency compressor E Filter drier solid core P Side entry power and control knockouts F Micro channel aluminum tube aluminum fin condenser Q Toolless door latch G Slide out motor and blower assembly for easy adjustment and service R Roof curbs in eight inch and fourteen inch heights1 1 Roof curbs for transitioning from Ducted S...

Page 8: ...uction servicing and proper unit operation Rigging and handling Exercise care when you move the unit Do not remove any packaging until the unit is near the place of installation To rig the unit attach chain or cable slings to the lifting holes provided in the base rails You must use spreader bars across the top of the unit The spreader bars must have a length that exceeds the largest dimension acr...

Page 9: ...at it lifts evenly All panels must be secured in place when the unit is lifted The condenser coils must be protected from rigging cable damage with plywood or other suitable material D A C B LEFT FRONT D A C B E F LEFT FRONT X Y LEFT FRONT Table 3 ZS 06 through 12 weights and dimensions Size tons Model Weight lbs Center of gravity 4 point load location lbs 6 point load location lbs Shipping Operat...

Page 10: ...heat exchangers available 8 tubes 110 110 Variable frequency drive3 3 The weight includes mounting hardware controls and the manual bypass option 30 30 LEFT A 59 00 C D E F 4 19 27 31 89 00 21 19 11 38 15 38 59 00 15 38 29 69 15 25 FRONT SEE DETAIL B FOR DRAIN LOCATION SEE DETAIL A FOR GAS INLET B 2X Ø 24 38 Table 5 ZS 06 through 10 unit physical dimensions Unit model number Dimension in A B C D E...

Page 11: ...9 00 A C D E F 4 19 27 31 89 00 21 19 FRONT SEE DETAIL B FOR DRAIN LOCATION 11 38 SEE DETAIL A FOR GAS INLET B 29 95 30 11 14 92 58 09 14 92 14 92 45 64 4X Ø 24 38 Table 6 ZS 12 unit physical dimensions Unit model number Dimension in A B C D E F ZS 12 50 3 4 119 1 2 30 3 16 24 3 16 17 3 16 6 3 16 ...

Page 12: ... 8 C Item Description A Gas pipe inlet B Gas exhaust vent C 1 in FPT Table 8 ZS 06 through 12 unit clearances Direction Distance in Direction Distance in Top1 1 Units must be installed outdoors make sure that overhanging structures or shrubs do not obscure the condenser air discharge outlet 72 Right 12 Front 36 Left 36 Rear 36 Bottom2 2 Units may be installed on combustable floors made from wood o...

Page 13: ...m duct openings Figure 10 shows the bottom power control and convenience outlet wiring entry Bottom condensate drain Bottom 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 Ø 2 469 3X Ø 0 875 ...

Page 14: ...d Systems Figure 11 ZS 06 through 12 unit electrical entry Item Description A Disconnect switch cover B Power entry Ø 2 1 2 C Control entry Ø 7 8 D Power entry Ø 2 1 2 E Convenience outlet cover F Convenience outlet power entry Ø 7 8 A B C D E F ...

Page 15: ...Air Supply Air A B C D Table 9 ZS 06 through 10 side duct dimensions Unit model number Dimension in A B C D ZS 06 27 3 4 12 1 16 27 1 2 16 ZS 07 27 3 4 12 1 16 27 1 2 16 ZS 08 28 1 4 18 1 16 28 1 4 18 1 4 ZS 10 28 1 4 18 1 16 28 1 4 18 1 4 Dot Plugs 2 7 8 5 5 32 D C 31 5 8 18 1 4 B A Table 10 ZS 12 side duct dimensions Unit model number Dimension in A B C D ZS 12 28 1 4 18 1 16 28 1 4 18 1 4 ...

Page 16: ... Figure 14 ZS 06 through 12 unit left duct opening 4 5 16 A C B Table 11 Left end duct dimensions Unit model number Dimension in A B C 06 30 357 13 365 22 516 07 30 357 13 365 22 516 08 30 358 22 580 22 330 10 30 358 22 580 22 330 12 30 358 22 580 22 330 ...

Page 17: ...on roof curb 8 or 14 50 1 2 30 20 20 80 5 8 6 A B E G D F C Roof curb components Item Description A Return air B Supply air C Right side of the unit D Front side of the unit E 2 typ F Insulated deck under the condenser section G Insulated deck under the compressor section 76 5 8 94 50 1 2 30 1 2 64 1 4 59 1 4 10 23 4 26 80 5 8 B A C E D ...

Page 18: ... the following steps 1 Remove the side duct covers 2 Orient the supply panel with the painted surface up 3 Slide the supply panel between the heat exchanger and the unit bottom The painted surface must face the heat exchanger The space is narrow but there is adequate room to install the panel 4 Secure the supply panel with the factory installed bracket and two screws 5 Orient the return panel with...

Page 19: ...E polyolester compressor lubricants are known to cause long term damage to some synthetic roofing materials Procedures that risk oil leakage include but are not limited to the following Compressor replacement Repairing refrigerant leaks Replacing refrigerant components such as the filter drier pressure switch metering device or coil Units are shipped with compressor mountings that are factory adju...

Page 20: ...cts are available If you install a disconnect you must use a field supplied or Ducted Systems supplied accessory See Figure 4 for the recommended mounting location Note Not all local codes allow the installation of a disconnect on the unit Confirm compliance with local code before you install a disconnect on the unit Electrical line must be sized properly to carry the load Note Use copper conducto...

Page 21: ...into the unit through the side of the unit or the basepan inside the curb Figure 22 Field wiring disconnect cooling unit with or without electric heat and all units with a VFD option Figure 23 Field wiring disconnect cooling unit with gas heat without a VFD option THREE PHASE POWER SUPPLY FACTORY OR FIELD SUPPLIED DISCONNECT GROUND LUG TERMINAL BLOCK TB1 L1 T1 L2 T2 T3 L3 THREE PHASE POWER SUPPLY ...

Page 22: ...uired on single stage heĂƟŶg units Jumper is required if there is no Smoke Detector circuit Jumper is required for any coŵďŝŶĂƟŽŶ of R RC or RH 5 5 OCC is an output from the thermostat to indicate the Occupied ĐŽŶĚŝƟon X is an input to the thermostat to display Error Status condiƟons 3 W2 Y1 G OCC Y2 X R SD 24 C W1 2 24V C 24 VAC Class 2 SD 24 Jumper Located on Harness Smoke Detector SD R 24V Outp...

Page 23: ...22 2 1 5 2 5 5 None 40 5 46 50 50 E09 6 8 1 18 9 40 5 46 50 50 E18 13 5 2 37 5 53 4 60 3 60 70 E24 18 2 50 69 75 9 70 80 E36 25 5 2 70 8 95 101 9 100 110 230 13 8 83 1 22 2 1 5 2 5 5 None 40 5 46 50 50 E09 9 1 21 7 40 5 46 50 50 E18 18 2 43 3 60 6 67 5 70 70 E24 24 2 57 7 78 6 85 5 80 90 E36 34 2 81 8 108 8 115 6 110 125 460 6 2 41 10 1 26 2 6 2 2 None 19 1 21 3 25 25 E09 9 1 10 8 19 1 21 3 25 25 ...

Page 24: ... 18 2 50 74 5 81 4 90 100 E36 25 5 2 70 8 100 5 107 4 110 110 E54 40 6 2 112 7 152 9 159 8 175 175 230 23 1 160 36 3 03 9 6 5 5 None 73 7 79 2 90 100 E18 18 2 43 3 73 7 79 2 90 100 E24 24 2 57 7 84 1 91 90 100 E36 34 2 81 8 114 3 121 1 125 125 E54 54 2 129 9 141 9 148 8 175 175 460 12 2 87 19 1 6 4 7 2 2 None 38 6 40 8 50 50 E18 18 2 21 7 38 6 40 8 50 50 E24 24 2 28 9 42 44 8 50 50 E36 34 2 40 9 5...

Page 25: ...ne 44 9 50 4 50 60 E09 6 8 1 18 9 44 9 50 4 50 60 E18 13 5 2 37 5 58 9 65 8 60 70 E24 18 2 50 74 5 81 4 80 90 E36 25 5 2 70 8 100 5 107 4 110 110 230 13 8 83 1 22 2 1 9 6 5 5 None 44 9 50 4 50 60 E09 9 1 21 7 44 9 50 4 50 60 E18 18 2 43 3 66 1 73 70 80 E24 24 2 57 7 84 1 91 90 100 E36 34 2 81 8 114 3 121 1 125 125 460 6 2 41 10 1 26 4 7 2 2 None 21 2 23 4 25 25 E09 9 1 10 8 21 2 23 4 25 25 E18 18 ...

Page 26: ...24 18 2 50 80 86 9 100 100 E36 25 5 2 70 8 106 112 9 110 125 E54 40 6 2 112 7 158 4 165 3 175 175 230 23 1 160 36 3 03 14 5 5 None 78 1 83 6 100 100 E18 18 2 43 3 78 1 83 6 100 100 E24 24 2 57 7 89 6 96 5 100 100 E36 34 2 81 8 119 8 126 6 125 150 E54 54 2 129 9 147 4 154 3 175 175 460 12 2 87 19 1 6 6 6 2 2 None 40 5 42 7 50 50 E18 18 2 21 7 40 5 42 7 50 50 E24 24 2 28 9 44 4 47 1 50 50 E36 34 2 4...

Page 27: ... 5 56 60 60 E09 6 8 1 18 9 50 5 56 60 60 E18 13 5 2 37 5 65 9 72 8 70 80 E24 18 2 50 81 5 88 4 90 90 E36 25 5 2 70 8 107 5 114 4 110 125 230 13 8 83 1 22 2 1 5 2 5 5 20 None 50 5 56 60 60 E09 9 1 21 7 50 5 56 60 60 E18 18 2 43 3 73 1 80 80 80 E24 24 2 57 7 91 1 98 100 100 E36 34 2 81 8 121 3 128 1 125 150 460 6 2 41 10 1 26 2 6 2 2 20 None 24 1 26 3 30 30 E09 9 1 10 8 24 1 26 3 30 30 E18 18 2 21 7...

Page 28: ...110 E24 18 2 50 87 93 9 100 110 E36 25 5 2 70 8 113 119 9 125 125 E54 40 6 2 112 7 165 4 172 3 175 175 230 23 1 160 36 3 03 9 6 5 5 20 None 83 7 89 2 100 110 E18 18 2 43 3 83 7 89 2 100 110 E24 24 2 57 7 96 6 103 5 100 110 E36 34 2 81 8 126 8 133 6 150 150 E54 54 2 129 9 154 4 161 3 175 175 460 12 2 87 19 1 6 4 7 2 2 20 None 43 6 45 8 50 50 E18 18 2 21 7 43 6 45 8 50 50 E24 24 2 28 9 48 3 51 50 60...

Page 29: ... 60 4 60 70 E09 6 8 1 18 9 54 9 60 4 60 70 E18 13 5 2 37 5 71 4 78 3 80 80 E24 18 2 50 87 93 9 90 100 E36 25 5 2 70 8 113 119 9 125 125 230 13 8 83 1 22 2 1 9 6 5 5 20 None 54 9 60 4 60 70 E09 9 1 21 7 54 9 60 4 60 70 E18 18 2 43 3 78 6 85 5 80 90 E24 24 2 57 7 96 6 103 5 100 110 E36 34 2 81 8 126 8 133 6 150 150 460 6 2 41 10 1 26 4 7 2 2 20 None 26 2 28 4 30 30 E09 9 1 10 8 26 2 28 4 30 30 E18 1...

Page 30: ...0 E24 18 2 50 92 5 99 4 110 110 E36 25 5 2 70 8 118 5 125 4 125 150 E54 40 6 2 112 7 170 9 177 8 175 200 230 23 1 160 36 3 03 14 5 5 20 None 88 1 93 6 110 110 E18 18 2 43 3 88 1 93 6 110 110 E24 24 2 57 7 102 1 109 110 110 E36 34 2 81 8 132 3 139 1 150 150 E54 54 2 129 9 159 9 166 8 175 175 460 12 2 87 19 1 6 6 6 2 2 20 None 45 5 47 7 50 50 E18 18 2 21 7 45 5 47 7 50 50 E24 24 2 28 9 50 6 53 4 60 ...

Page 31: ...44 192 144 192 AFUE Steady state efficiency 80 80 80 80 80 80 80 80 80 80 No burners 4 6 4 6 4 6 6 8 6 8 No stages 24 24 24 24 24 24 24 24 24 24 Temperature Rise Range ºF 20 50 35 65 15 45 30 60 10 40 25 55 20 50 35 65 10 40 25 55 Gas Limit Setting ºF 165 165 165 165 215 195 195 150 195 150 Gas piping connection in 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 Dimensions inches Length 89 89 89 89 119 1 ...

Page 32: ...Belt A49 A49 A49 A49 A56 A54 A56 A54 A54 BX55 Motor HP each 1 1 2 2 1 1 2 3 2 3 2 3 3 5 RPM 1725 1725 1725 1725 1725 1725 1725 1725 1725 1725 Frame size 56 56 56 56 56 56 56 56 56 184T Filters Quantity size 4 24 x 16 x 2 6 7 4 24 x 16 x 2 6 7 4 24 x 20 x 2 6 7 4 24 x 20 x 2 6 7 4 24 x 20 x 2 6 7 4 24 x 16 x 4 8 4 24 x 16 x 4 8 4 24 x 20 x 4 8 4 24 x 20 x 4 8 4 24 x 20 x 4 8 1 Cooling only unit or ...

Page 33: ...ir table for minimum CFM limitations See the Electrical data table for electrical data Table 15 Electric heat minimum supply air Size tons Model Voltage Minimum supply air CFM Heater kW 9 18 24 36 54 06 6 5 ZS 208 230 3 60 1950 1950 1950 1950 460 3 60 1950 1950 1950 1950 600 3 60 1950 1950 1950 1950 07 7 5 ZS 208 230 3 60 2250 2250 2250 2250 460 3 60 2250 2250 2250 2250 600 3 60 2250 2250 2250 225...

Page 34: ...ble 16 Gas pipe sizing capacity of pipe on page 34 The heating value of the gas may vary by locality You must check the value with the local gas utility Figure 25 Side entry gas piping Figure 26 Bottom entry gas piping Note Maximum capacity of pipe in cubic feet of gas per hour based upon a pressure drop of 0 3 inch W C and 0 6 specific gravity gas Note There may be a local gas utility requirement...

Page 35: ...mum supply air Size tons Model Heat size Supply air CFM Cooling Heating Minimum Maximum Minimum Maximum 06 6 5 ZS N12 1950 3250 1950 3250 N18 1950 3250 1950 3250 07 7 5 ZS N12 2250 3750 2250 3750 N18 2250 3750 2250 3750 08 8 5 ZS N12 2550 4250 2550 4250 N18 2550 4250 2550 4250 10 10 ZS N18 3000 5000 3000 5000 N24 3000 5000 3000 5000 12 12 5 ZS N18 3750 6250 3750 6250 N24 3750 6250 3750 6250 Natura...

Page 36: ...d in the blower section with its control module mounted in the return air compartment You must test and maintain the detector on a regular basis according to NFPA 72 requirements You must clean the detector at least once a year For specific troubleshooting and maintenance procedures refer to the smoke detector s installation instructions that accompany the unit LP gas is an excellent solvent and w...

Page 37: ...gnal to the VFD to control the output of the indoor blower motor Duct static pressure transducer A 0 5 in WC pressure transducer located in the control box compartment is used to sense static gauge pressure in the supply air duct and convert this pressure measurement to a proportional 0 5 VDC electrical output Pressure transmitting plastic tubing 1 4 in diameter must be field supplied and installe...

Page 38: ...rive The physical dimensions of VFDs can vary greatly among manufacturers horsepower ratings and voltage requirements Keep in mind that drive manufacturers also require various minimum clearances to allow for adequate internal cooling of the drive during operation The unit comes with a mounting bracket installed in the blower access compartment which may accommodate other vendor s drives depending...

Page 39: ...e return air temperature Single enthalpy changeover For single enthalpy economizer operation the outside air is suitable for free cooling if the outside air enthalpy is at least 1 BTU lb below the Economizer Outside Air Enthalpy setpoint and the outside air temperature is no greater than the RAT plus 9 F If the outside air temperature rises above the RAT plus 10 F free cooling is no longer availab...

Page 40: ...oint 1 F the control starts a 12 minute timer to de energize a compressor output If at any time the economizer output goes above the minimum position the timer stops and resets when the economizer output returns to minimum position If the demand for cooling from the space return is satisfied the economizer output will modulate to minimum position and the compressor outputs will be de energized as ...

Page 41: ...ects 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 The 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 H R 24V 24 VAC hot supplied for the outdoor air humidity sensor Connects through circuit trace to 24V IN pi...

Page 42: ...station sensor MOA Range parameter sets the cubic feet per minute liters per second measured by the air monitoring station sensor when it outputs 10 VDC Fr Air parameter reports input status 0 50000CFM 23595lps Used for economizer minimum position reset in speed controlled indoor blower applications C COM 24 VAC common 0 10 VDC negative for the air monitoring station sensor Connects through circui...

Page 43: ...to the 4 stage board and or fault detection diagnostics board 1 When wiring the unit and other devices using the SA Bus and FC Bus see Table 32 Smart Equipment economizer board analog outputs Location Board label Cover label Description Function and comments D J4 EX VFD 2 10 VDC positive output for the modulating power Exhaust fan Variable Frequency Drive discharge damper modulating power exhaust ...

Page 44: ... economizer actuator Connects through circuit trace to 24V IN pin COM EX FAN 24 VAC hot output to energize power exhaust fan contactor coil VFD enable relay coil ExFan parameter reports output status Off On when ExFType selection is Non Modulating Modulating Damper or Variable Frequency Fan Used to turn on enable the power exhaust fan motor COM 24 VAC common 0 10 VDC negative for economizer actuat...

Page 45: ...ended for the belt section 5 Re tighten the belt nuts Figure 29 Belt adjustment CFM static pressure and power altitude and temperature corrections Use the information below to assist in the application of the product at altitudes at or exceeding 1000 feet above sea level The air flow rates listed in the standard blower performance tables are based on standard air at sea level As the altitude or te...

Page 46: ... assumed The 1 5 in static pressure given is at an elevation of 5 000 ft The first step is to convert this static pressure to equivalent sea level conditions Sea level static pressure 1 5 832 1 80 in Enter the blower table at 6000 sCFM and static pressure of 1 8 The rpm listed will be the same rpm needed at 5 000 ft Suppose that the corresponding BHP listed in the table is 3 2 This value must be c...

Page 47: ... 1 95 BHP exceeds the maximum continuous BHP rating of the 1 5 HP motor The 2 HP motor is required 6 1268 RPM is within the range of the 2 HP drives 7 Using the 2 HP motor and drive 5 turns open achieves 1268 RPM Example supply air blower performance Air flow CFM Available external static pressure IWG 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP R...

Page 48: ... 50 866 0 71 925 0 90 982 1 06 1038 1 21 1092 1 35 1147 1 48 1203 1 61 1259 1 73 1317 1 87 2400 835 0 66 897 0 87 956 1 06 1013 1 22 1069 1 37 1124 1 51 1178 1 64 1234 1 77 1290 1 90 1348 2 03 2600 869 0 84 931 1 05 990 1 24 1047 1 40 1103 1 55 1158 1 69 1212 1 82 1268 1 95 1324 2 07 1382 2 21 2800 906 1 03 968 1 25 1027 1 43 1084 1 60 1139 1 75 1194 1 89 1249 2 02 1304 2 14 1361 2 27 1419 2 40 30...

Page 49: ...atic pressure IWG1 1 Blower performance includes gas heat exchangers and 2 in filters See the static resistance table for additional applications 2 See the RPM selection table to determine the required motor sheave setting and to determine the maximum continuous BHP 3 kW BHP x 0 932 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM ...

Page 50: ... 19 1134 1 34 1210 1 49 1286 1 65 1365 1 81 1447 1 98 1532 2 18 2400 878 0 78 953 1 00 1027 1 19 1100 1 36 1174 1 52 1250 1 67 1327 1 82 1405 1 98 1487 2 16 1572 2 36 2600 923 0 98 997 1 20 1071 1 39 1145 1 56 1219 1 72 1294 1 87 1371 2 02 1450 2 18 1532 2 36 1617 2 56 2800 971 1 20 1046 1 42 1119 1 61 1193 1 78 1267 1 94 1343 2 09 1419 2 24 1498 2 40 1580 2 58 1665 2 78 3000 1023 1 44 1097 1 66 1...

Page 51: ...8 1 0 1 2 1 4 1 6 1 8 2 0 RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP 3 HP and field supplied drive Standard 3 HP Drive Hi Static 5 HP Drive 3200 823 1 28 861 1 47 906 1 64 955 1 80 1007 1 95 1059 2 12 1109 2 29 1155 2 50 1194 2 73 1225 3 01 3400 860 1 48 898 1 67 942 1 84 992 2 00 1044 2 16 1095 2 32 1145 2 50 1191 2 70 1231 2 94 1262 3 22 3600 898 1 71 935 1 9...

Page 52: ...t screws after 10 12 hours run time Table 23 Indoor blower specifications Size tons Model Motor Motor sheave Blower sheave Belt HP RPM Eff SF Frame Datum dia in Bore in Model Datum dia in Bore in Model 06 6 5 ZS 1 1 2 1725 0 8 1 15 56 3 4 4 4 7 8 1VM50 7 0 1 AK74 A49 2 1725 0 8 1 15 56 3 4 4 4 7 8 1VM50 6 0 1 AK64 A49 07 7 5 ZS 1 1 2 1725 0 8 1 15 56 3 4 4 4 7 8 1VM50 7 0 1 AK74 A49 3 1725 0 8 1 1...

Page 53: ...e correct blower performance table for the unit from Airflow performance on page 4821 Tables are presented for side and bottom duct configuration 6 Determine the unit measured CFM from the blower performance table external static pressure and the number of turns the variable motor sheave is open 7 To adjust measured CFM to required CFM see Supply air drive adjustment on page 54 8 After you note th...

Page 54: ...nges review the installation for any installation errors leaks or undesirable 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 increase by the cube of the blower speed Static pressure increases by the square of the blower speed Only qualified personnel can make blo...

Page 55: ... than 0 25 IWG the unit will deliver less CFM during full economizer operation 4 in Filter2 Electric heat kW2 9 18 24 36 54 06 6 5 07 7 5 ZS 1900 0 00 0 07 0 10 0 05 0 06 0 07 0 08 0 10 2100 0 01 0 09 0 11 0 06 0 07 0 08 0 09 0 11 2300 0 01 0 11 0 12 0 07 0 08 0 09 0 10 0 13 2500 0 02 0 13 0 14 0 08 0 09 0 10 0 11 0 14 2700 0 03 0 16 0 15 0 09 0 10 0 12 0 13 0 16 2900 0 04 0 18 0 16 0 10 0 11 0 13...

Page 56: ...ficient for free cooling the economizer modulates to control the SAT to 1 degrees of the operational setpoint No outdoor air options When the thermostat calls for the first stage of cooling the low voltage control circuit from R to Y1 and G is completed The UCB energizes the economizer if installed and free cooling is available or the first available compressor and the condenser fans For first sta...

Page 57: ...l points in the Smart Equipment control 1 Local LCD on the unit control board OR 2 Mobile Access Portal MAP Gateway Portable Source 1 P N S1 JC MAP1810 OP MAP Gateway Quick Start Guide P N 24 10737 16 MAP Gateway Instruction P N 24 10737 8 High pressure limit switch During cooling operation if a high pressure limit switch opens the UCB de energizes the associated compressor initiates the ASCD Anti...

Page 58: ...ere is an abnormal temperature rise in a compressor the protector will open to shut down the compressor The UCB incorporates features to minimize compressor wear and damage An Anti Short Cycle Delay ASCD is used to prevent operation of a compressor too soon after its previous run Additionally a minimum run time is imposed any time a compressor is energized The ASCD is initiated on unit start up an...

Page 59: ...detected the GV closes and a retry operation begins During the flame stabilization period a loss of the flame for 2 seconds causes the GV to close and the retry operation to begin After the flame stabilization period a loss of flame for 3 4 second causes the GV to close and the retry operation to begin At the conclusion of the flame stabilization period the ICB operates the gas heat in high fire f...

Page 60: ...e detection is lost Normal operation is now allowed The flame detection circuitry continually tests itself If the ICB finds the flame detection circuitry to be faulty the ICB does not permit an ignition sequence and the draft motor is energized If this failure occurs during an ignition cycle the failure is counted as a recycle Gas valve The UCB and ICB continuously monitor the GV If the ICB senses...

Page 61: ...lowering of the temperature within the conditioned space See Table 31 for the required gas heat anticipator setting Cooling start up Pre start checklist When the installation is complete perform the following checks 1 Check the electrical supply voltage being supplied Verify that it is the same as the voltage listed on the unit nameplate 2 Set the room thermostat to the off position 3 Turn on elec...

Page 62: ...rn on the furnace and verify that the thermostat is calling for second stage 100 input heat 3 Measure the time needed for one revolution of the hand on the smallest dial on the meter A typical gas meter has a 1 2 or a 1 cubic foot test dial 4 Using the number of seconds it takes for one revolution of the dial calculate the cubic feet of gas consumed per hour see page 63 5 If necessary adjust the h...

Page 63: ...o decrease manifold pressure Note Do not over fire the unit on second stage 7 After you check the high manifold pressure adjust the thermostat to call for first stage heat 8 If necessary use a screwdriver to turn the first stage adjustment screw clockwise to increase manifold pressure or counterclockwise to decrease manifold pressure Note Do not under fire the unit on first stage 9 After you check...

Page 64: ...n the Smart Equipment control Installation and operation guides are available from your equipment dealer or distributor 1 Local LCD on the unit control board 2 Mobile Access Portal MAP Gateway Portable Source 1 P N S1 JC MAP1810 OP 3 MAP Gateway Quick Start Guide P N 24 10737 16 4 MAP Gateway Instruction P N 24 10737 8 For more information on the Smart Equipment unit control board navigation refer...

Page 65: ...re also effective for economizer free cooling supply air temperature reset when the ClgStgs parameter is set for 1 or more G Continuous indoor blower request 24 VAC input switched from R OCC Occupancy request 24 VAC input switched from R Must have the OccMode parameter set for External to be effective X Hard lockout indicator 24 volt output to a light thermostat LED R 24 VAC hot for thermostat swi...

Page 66: ...inate temporary occupancy COM Common for ST and SSO inputs Negative of VDC circuit for ST and SSO inputs SSO Space Sensor Offset input from 0 to 20KΩ potentiometer Positive of VDC circuit 3 625 VDC reading to COM with open circuit 10KΩ 2 5 VDC is 0 F offset 0Ω 0 VDC is maximum above offset and 20KΩ 3 4 VDC is maximum below offset from active space temperature setpoint Smart Equipment UCB temperatu...

Page 67: ...AC hot return from Air Proving Switch When this optional input is enabled the air proving switch must close within 30 seconds of initiation of indoor blower operation and not open for greater than 10 seconds during indoor blower operation to allow heat cool operation and prevent an APS open alarm the air proving switch must open within 30 seconds of termination of indoor blower operation to preven...

Page 68: ...entilation cooling reheat or heat pump heating demands C2 24 VAC hot output for compressor 2 Not effective for one stage compressor UCBs If demand is present and permissions allow compressor 2 operation output with compressor cooling comfort ventilation cooling or heat pump heating demands Smart Equipment UCB refrigerant circuit safety switch and indoor blower overload connections Location Label D...

Page 69: ...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 center of the board Positive of t...

Page 70: ... than FC bus BACnet MSTP communication circuit FC FC Field Connected BUS BACnet MSTP communication Positive of the VDC typically a fluctuating 1 5 to 3 5 volts reading to COM at least 0 25 volts lower than FC bus BACnet MSTP communication circuit COM Common for the FC Field Connected BUS BACnet MSTP communication circuit Negative of the VDC FC bus BACnet MSTP communication circuit SHLD Shield for ...

Page 71: ...Pair Cable2 2 We recommend 26 AWG solid 6 wire 3 twisted pairs cable as the best fit for fabricating modular cables with the modular jack housing assembly Be sure the cable you use fits the modular jack housing The preassembled cables that are available from Anixter Part No CBL NETWORKxxx use 24 gauge wire Anixter preassembled CBL NETWORK25 CBL NETWORK50 CBL NETWORK75 CBL NETWORK100 0 15 in FC Bus...

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