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R-410A
ZW SERIES W/SMART EQUIPMENT™

6-1/2 - 12-1/2 Ton

60 Hertz

5565604-BIM-B-1018

TABLE OF CONTENTS

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Preceding Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Side Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Power And Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Optional Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Optional Variable Air Volume (VAV) . . . . . . . . . . . . . . . . . . . . 34

Optional Hot Gas Bypass (HGBP) . . . . . . . . . . . . . . . . . . . . . . 36

Economizer Sequences. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Dry Bulb Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Single Enthalpy Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Dual Enthalpy Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Auto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Free Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Airflow Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Checking Air Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . 52

Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Electric Heating Sequence Of Operations. . . . . . . . . . . . . . . . 55

Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . . . . 55

Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . . . . 56

Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . . . . 56

Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

Control Board Navigation Components . . . . . . . . . . . . . . . . . . . . 60

Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

LIST OF TABLES

1 ZW-06 thru -12 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . 7

2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3 ZW-06 thru -12 Unit Accessory Weights . . . . . . . . . . . . . . . . . 9

4 ZW-06 thru -12 Unit Physical Dimensions . . . . . . . . . . . . . . . 11

5 ZW-06 thru -12 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . 11

6 Side Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7 Left/End Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

9 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

10 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

11 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . . 31

12 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . . . . 32

13 Gas Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . . . . 32

14 Smart Equipment™ Economizer Board Details . . . . . . . . . . 38

15 Supply Air Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

16 Altitude/Temperature Correction Factors . . . . . . . . . . . . . . . 43

17 Airflow Performance - Side Duct Application . . . . . . . . . . . . 45

18 Airflow Performance - Bottom Duct Application . . . . . . . . . . 47

19 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

20 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 49

21 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . . . . . 49

22 Motor Sheave Datum Diameters. . . . . . . . . . . . . . . . . . . . . . 51

23 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . . . . 52

24 Electric Heat Limit Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

25 Electric Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 55

26 Gas Heat Limit Control Settings . . . . . . . . . . . . . . . . . . . . . . 57

27 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . . . . 57

28 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . . . . 59

29 Gas Heat Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

30 Smart Equipment™ UCB Details . . . . . . . . . . . . . . . . . . . . . 61

31 Cable for FC Buses and SA Buses in Order of Preference . 67

32 Ignition Control Flash Codes . . . . . . . . . . . . . . . . . . . . . . . . . 67

LIST OF FIGURES

1 Unit Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Condenser Covering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

4 ZW Component Location (ZW-10 Shown) . . . . . . . . . . . . . . . 6

5 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

7 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 ZW-06 thru -10 Physical Dimensions . . . . . . . . . . . . . . . . . . . 9

9 ZW-12 Physical Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . 10

10 ZW-06 thru -12 Unit Bottom Duct Openings . . . . . . . . . . . . . 12

11 ZW-06 thru -12 Unit Electrical Entry . . . . . . . . . . . . . . . . . . . 13

12 ZW-06 thru -10 Unit Side Duct Openings . . . . . . . . . . . . . . . 13

13 ZW-12 Unit Side Duct Openings . . . . . . . . . . . . . . . . . . . . . 14

14 ZW-06 thru -12 Unit Left/End Duct Opening. . . . . . . . . . . . . 14

15 ZW-06 thru -12 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . 15

16 ZW-06 thru -12 Transition Roof Curb . . . . . . . . . . . . . . . . . . 15

17 Side Panels With Hole Plugs . . . . . . . . . . . . . . . . . . . . . . . . 16

18 Return Downflow Plenum With Panel. . . . . . . . . . . . . . . . . . 16

19 Discharge Panel In Place . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

20 Save Side Panels For Economizer Hood Tops . . . . . . . . . . 16

21 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

22 Field Wiring Disconnect - Cooling Unit With/Without Electric

Heat and All Units With VFD Option . . . . . . . . . . . . . . . . . . 18

23 Field Wiring Disconnect - Cooling Unit With Gas Heat Without

VFD Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

24 Typical Electronic Thermostat Field Wiring . . . . . . . . . . . . . 20

25 Side Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

26 Bottom Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

27 Simplified VFD Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

28 SE-ECO1001-0 Economizer Controller . . . . . . . . . . . . . . . . 38

29 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

30 Altitude/Temperature Correction Factors . . . . . . . . . . . . . . . 43

31 Dry Coil Delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

32 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

33 Typical Gas Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60

34 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

Содержание ZW-06

Страница 1: ...lication 45 18 Airflow Performance Bottom Duct Application 47 19 RPM Selection 48 20 Indoor Blower Specifications 49 21 Power Exhaust Specifications 49 22 Motor Sheave Datum Diameters 51 23 Additional...

Страница 2: ...precautions and codes including ANSI Z223 1 or CSA B149 1 latest edition Improper installation may create a condition where the operation of the product could cause personal injury or property damage...

Страница 3: ...nly 3 For installation on combustible material and 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 4 For use with...

Страница 4: ...TD 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 Ou...

Страница 5: ...e 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 C...

Страница 6: ...process cooling applications computer rooms switchgear etc please call the applications department for Ducted Systems 1 877 874 SERV for guidance Additional accessories may be needed for stable opera...

Страница 7: ...re 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 Spr...

Страница 8: ...fted The condenser coils should 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 2 Weights and Dimensions S...

Страница 9: ...Heat1 1 Weight given is for the maximum heater size available 54KW 49 49 Gas Heat2 2 Weight given is for the maximum number of tube heat exchangers available 8 tube 110 110 Variable Frequency Drive3...

Страница 10: ...Ducted Systems Figure 9 ZW 12 Physical Dimensions 15 23 29 03 14 85 29 03 14 85 15 23 28 86 29 66 44 09 24 58 TYP 4 PL FRONT See detail B for drain location See detail A for gas inlet C D E F B 4 3 1...

Страница 11: ...1 2 30 3 16 24 3 16 17 3 16 6 3 16 42 CABINET 3 126 2 000 3 184 4 727 7 705 14 594 Gas Pipe Inlet Gas Exhaust Vent 50 3 4 CABINET 3 126 2 000 3 184 4 737 7 715 17 541 Gas Pipe Inlet Gas Exhaust Vent 5...

Страница 12: ...Unit Bottom Duct Openings 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...

Страница 13: ...t Electrical Entry Figure 12 ZW 06 thru 10 Unit Side Duct Openings Disconnect Swith Cover Power Entry 2 1 2 Control Entry 7 8 Power Entry 2 1 2 Convenience Outlet Cover Convenience Outlet Power Entry...

Страница 14: ...Left End Duct Opening Dot Plugs 2 7 8 5 5 32 D C 31 5 8 18 1 4 B A Table 6 Side Duct Dimensions Unit Model Number Dimension in A B C D ZW 06 28 1 4 18 1 16 28 1 4 18 1 4 ZW 07 28 1 4 18 1 16 28 1 4 18...

Страница 15: ...imension in A B C ZW 06 30 358 22 580 22 330 ZW 07 30 358 22 580 22 330 ZW 08 30 358 22 580 22 330 ZW 10 30 358 22 580 22 330 ZW 12 30 358 22 580 22 330 8 or 14 50 1 2 30 20 20 80 5 8 6 2 TYP INSULATE...

Страница 16: ...o be reused by securing each panel to its respective down flow opening But keep in mind that the supply panel is installed with the painted surface UP facing the heat exchanger while the return panel...

Страница 17: ...me size and type Dirty filters reduce the capacity of the unit and result in frosted coils or safety shutdown Refer to physical data tables for the number and size of filters needed for the unit The u...

Страница 18: ...wired with a separate branch circuit fed directly from the meter panel and properly fused Refer to Figures 22 23 and 24 for typical field wiring and to the appropriate unit wiring diagram mounted insi...

Страница 19: ...Johnson Controls Ducted Systems 19 Figure 23 Field Wiring Disconnect Cooling Unit With Gas Heat Without VFD Option L1 T1 L2 T2 T3 L3 THREE PHASE POWER SUPPLY FACTORY OR FIELD SUPPLIED DISCONNECT GROUN...

Страница 20: ...le stage he g units Jumper is required if there is no Smoke Detector circuit Jumper is required for any co of R RC or RH 5 5 OCC is an output from the thermostat to indicate the Occupied on X is an in...

Страница 21: ...5 2 5 5 None 41 9 47 4 50 60 E09 6 8 1 18 9 41 9 47 4 50 60 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 6 83 1 21 3 03 5 2 5 5 None 41 9 47 4 50 6...

Страница 22: ...75 5 90 90 E24 18 0 2 50 0 74 5 81 3 90 90 E36 25 5 2 70 8 100 5 107 4 110 110 E54 40 6 2 112 7 152 9 159 7 175 175 230 23 1 160 0 36 0 2 1 9 6 5 5 0 0 None 70 0 75 5 90 90 E18 18 0 2 43 3 70 0 75 5 9...

Страница 23: ...3 51 8 50 60 E09 6 8 1 18 9 46 3 51 8 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 6 83 1 21 3 03 9 6 5 5 None 46 3 51 8 50 60 E09 9 1...

Страница 24: ...9 9 90 100 E24 18 0 2 50 0 80 0 86 8 90 100 E36 25 5 2 70 8 106 0 112 9 110 125 E54 40 6 2 112 7 158 4 165 2 175 175 230 23 1 160 0 36 0 2 1 14 0 5 5 0 0 None 74 4 79 9 90 100 E18 18 0 2 43 3 74 4 79...

Страница 25: ...60 70 E09 6 8 1 18 9 51 9 57 4 60 70 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 6 83 1 21 3 03 5 2 5 5 20 None 51 9 57 4 60 70 E09 9 1 21 7...

Страница 26: ...85 5 100 100 E24 18 0 2 50 0 87 0 93 8 100 100 E36 25 5 2 70 8 113 0 119 9 125 125 E54 40 6 2 112 7 165 4 172 2 175 175 230 23 1 160 0 36 0 2 1 9 6 5 5 10 0 None 80 0 85 5 100 100 E18 18 0 2 43 3 80...

Страница 27: ...60 70 E09 6 8 1 18 9 56 3 61 8 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 6 83 1 21 3 03 9 6 5 5 20 None 56 3 61 8 60 70 E09 9 1 21 7 56...

Страница 28: ...89 9 100 110 E24 18 0 2 50 0 92 5 99 3 100 110 E36 25 5 2 70 8 118 5 125 4 125 150 E54 40 6 2 112 7 170 9 177 7 175 200 230 23 1 160 0 36 0 2 1 14 0 5 5 10 0 None 84 4 89 9 100 110 E18 18 0 2 43 3 84...

Страница 29: ...Btu 96 144 96 144 96 144 144 192 144 192 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 23 23 23 23 23 23 23 23 23 23 Temperature Rise Range F 20...

Страница 30: ...89 AK74 AK84 AK74 AK74 BK77 Belt A53 A54 A52 A54 A56 A54 A56 A54 A54 BX56 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 5...

Страница 31: ...our of gas flow required specific gravity of the gas and the length of run National Fuel Gas Code Z223 1 in U S A or the current Gas Installation Codes CSA B149 1 in Canada should be followed in all c...

Страница 32: ...eaned of dirt and scale by hammering on the outside of the pipe and blowing out loose particles Before initial start up be sure that all gas lines external to the unit have been purged of air 5 The ga...

Страница 33: ...ctric heaters are available as factory installed options or field installed accessories Refer to electric heat instructions for installation These heaters mount in the heat compartment with the heatin...

Страница 34: ...Down Flow application 2 Horizontal Flow application that requires the purchase of a barometric relief hood Rain Hood All of the hood components including the filters the gasketing and the hardware fo...

Страница 35: ...peration and complete electrical isolation of the drive TEST routes power to the VFD but not to the motor to allow for drive programming and or diagnostics If a drive failure occurs the unit does not...

Страница 36: ...g is no longer available if the outside air temperature rises above either the Economizer OAT Enable setpoint or the return air temperature Single Enthalpy Changeover For single enthalpy economizer op...

Страница 37: ...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 or return temperature...

Страница 38: ...mistor 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...

Страница 39: ...power exhaust actuator and economizer actuator Connects through circuit trace to 24V IN pin HOT ECON 2 10 VDC output for the Economizer actuator Econ parameter reports output status 0 100 Used to posi...

Страница 40: ...egative for the indoor air quality sensor Connects through circuit trace to 24V IN pin COM R 24V 24 VAC hot supplied for the outdoor air quality sensor Connects through circuit trace to 24V IN pin HOT...

Страница 41: ...pressures or producing a high noise level the scroll is misphased Blower Rotation Check for proper supply air blower rotation If the blower is rotating backwards the line voltage at the unit point of...

Страница 42: ...t 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 16 and Fi...

Страница 43: ...iven 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 Enter the blower table at 6000 sCFM and...

Страница 44: ...s found 5 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 o...

Страница 45: ...4 2 04 2400 631 0 16 682 0 41 736 0 66 793 0 90 852 1 14 911 1 36 970 1 58 1028 1 78 1084 1 97 1136 2 13 2600 642 0 27 692 0 52 747 0 76 804 1 01 862 1 24 922 1 47 981 1 69 1039 1 89 1094 2 07 1146 2...

Страница 46: ...G1 1 Blower performance includes gas heat exchangers and 2 filters See STATIC RESISTANCE table for additional applications 2 See RPM SELECTION table to determine desired motor sheave setting and to de...

Страница 47: ...1012 1 61 1065 1 81 1113 2 02 1153 2 24 2400 689 0 42 743 0 69 800 0 93 859 1 16 919 1 37 978 1 57 1035 1 77 1088 1 97 1135 2 18 1176 2 40 2600 712 0 60 766 0 87 823 1 11 882 1 34 942 1 55 1002 1 75...

Страница 48: ...RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Field Supplied Drive Standard 3 HP Drive Hi Static 5 HP Drive 3200 797 1 32 851 1 46 903 1 60 953 1 74 1001 1 86 1048 1 99 1093 2 11 1138 2 23...

Страница 49: ...ws after 10 12 hrs run time is recommended Table 20 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...

Страница 50: ...en 5 Select the correct blower performance table for the unit from Tables 17 and 18 Tables are presented for side and down flow configuration 6 Determine the unit Measured CFM from the Blower Performa...

Страница 51: ...allation 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...

Страница 52: ...has a delay of 10 seconds minimum off Optional VAV Start up and Control Table 23 Additional Static Resistance Size Tons Model CFM Cooling Only1 1 Add these values to the available static resistance in...

Страница 53: ...s have been completed Upon the final compressor de energizing the blower is stopped following the elapse of the fan off delay for cooling To be available a compressor must not be locked out due to a h...

Страница 54: ...e Suction Line at the Evaporator Coil detects a temperature below 26 Deg F default the UCB will de energize the associated compressor initiate the ASCD and if the other compressor is idle stop the con...

Страница 55: ...emperature limit switch of electric heat units The control circuit includes the following safety controls Limit Switch LS This control is located inside the heater compartment and is set to open at th...

Страница 56: ...n 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 fl...

Страница 57: ...ICB monitors the Pressure and Roll out 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 t...

Страница 58: ...ON position See Figure 33 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 burne...

Страница 59: ...contact your gas company for this information as it varies widely from area to area EXAMPLE By actual measurement it takes 19 seconds for the hand on a 1 cubic foot dial to make a revolution with a 1...

Страница 60: ...move the screws holding each end of the manifold to the manifold supports 3 Disconnect wiring to the gas valves and spark igniter s Remove the manifold gas valve assembly Orifices can now be inspected...

Страница 61: ...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 Connec...

Страница 62: ...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 1...

Страница 63: ...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 reh...

Страница 64: ...ut 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 permis...

Страница 65: ...er 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...

Страница 66: ...ication 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...

Страница 67: ...air 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 jac...

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