York ZWT06 Installation Manual Download Page 1

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R-410A
ZW SERIES W/SMART EQUIPMENT™

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

60 Hertz

5565606-TIM-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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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

Control Board Navigation Components . . . . . . . . . . . . . . . . . . . . 61

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

LIST OF TABLES

1 ZWT06 thru T12 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . 7

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

3 ZWT06 thru T12 Unit Accessory Weights . . . . . . . . . . . . . . . . 9

4 ZWT06 thru T12 Unit Physical Dimensions . . . . . . . . . . . . . . 11

5 ZWT06 thru T12 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 . . . . . . . . . . . . . . . . . . . . 56

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

27 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . . . . 58

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

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

30 Smart Equipment™ UCB Details . . . . . . . . . . . . . . . . . . . . . 62

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 (ZWT10 Shown). . . . . . . . . . . . . . . 6

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

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

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

8 ZWT06 thru T10 Physical Dimensions . . . . . . . . . . . . . . . . . . 9

9 ZWT12 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . . . 10

10 ZWT06 thru T12 Unit Bottom Duct Openings . . . . . . . . . . . . 12

11 ZWT06 thru T12 Unit Electrical Entry . . . . . . . . . . . . . . . . . . 13

12 ZWT06 thru T10 Unit Side Duct Openings . . . . . . . . . . . . . . 13

13 ZWT12 Unit Side Duct Openings . . . . . . . . . . . . . . . . . . . . . 14

14 ZWT06 thru T12 Unit Left Duct Opening . . . . . . . . . . . . . . . 14

15 ZWT06 thru T12 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . 15

16 ZWT06 thru T12 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-ECO1001-1 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

Summary of Contents for ZWT06

Page 1: ...plication 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 Additiona...

Page 2: ...recautions 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 I...

Page 3: ...ly 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...

Page 4: ...Pleated Filters Merv 8 3 2 Cleanable Filters 4 4 Pleated Filters Merv 13 A None C BACnet MSTP Modbus N2 COM Card F Fault Detection and Diagnostics FDD E Verasys Single Zone G Verasys Change Over Bypa...

Page 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...

Page 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...

Page 7: ...e 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 Spre...

Page 8: ...ed 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 Siz...

Page 9: ...c 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...

Page 10: ...Ducted Systems Figure 9 ZWT12 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...

Page 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...

Page 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...

Page 13: ...t Electrical Entry Figure 12 ZWT06 thru T10 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...

Page 14: ...it Left 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 ZWT06 28 1 4 18 1 16 28 1 4 18 1 4 ZWT07 28 1 4 18 1 16 28 1 4 18...

Page 15: ...Dimension in A B C ZWT06 30 358 22 580 22 330 ZWT07 30 358 22 580 22 330 ZWT08 30 358 22 580 22 330 ZWT10 30 358 22 580 22 330 ZWT12 30 358 22 580 22 330 8 or 14 50 1 2 30 20 20 80 5 8 6 2 TYP INSULAT...

Page 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...

Page 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...

Page 18: ...red 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 inside...

Page 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...

Page 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...

Page 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...

Page 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...

Page 23: ...6 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...

Page 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...

Page 25: ...4 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...

Page 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...

Page 27: ...8 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 5...

Page 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...

Page 29: ...40 Heat output K 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...

Page 30: ...9 AK89 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...

Page 31: ...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 case...

Page 32: ...cale 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 gas supply should be...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 38: ...nomizer actuator position feedback Connects through circuit trace to 24V IN pin HOT C COM Mixed Air Temperature sensor input from 10K 77 F Type III negative temperature coefficient thermistor MAT para...

Page 39: ...r 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 exh...

Page 40: ...ge 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 N...

Page 41: ...If the blower is rotating backwards the line voltage at the unit point of power connection is misphased See PHASING Belt Tension The tension on the belt should be adjusted as shown in Figure 29 IN8 B...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 48: ...PM 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 11...

Page 49: ...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 in...

Page 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...

Page 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...

Page 52: ...rgized after any specified delay associated with the operation When energized the indoor blower has a minimum run time of 30 seconds Additionally the indoor blower has a delay of 10 seconds minimum of...

Page 53: ...their minimum run times the compressors and condenser fans are de energized Otherwise the unit operates each cooling system until the minimum run times for the compressors have been completed Upon the...

Page 54: ...ch opens for greater than 5 seconds the UCB will de energize the associated compressor initiate the ASCD and if the other compressor is idle stop the condenser fans If the call for cooling is still pr...

Page 55: ...nergize the blower motor b The thermostat will cycle the electric heat to satisfy the heating requirements of the conditioned space Electric Heat Operation Errors Temperature Limit If the UCB senses z...

Page 56: ...satisfied both valves are closed Second Stage Of Heating When the ICB receives a call for the second stage of heating W2 the ICB conducts a complete first stage ignition sequence If this sequence is s...

Page 57: ...adequate supply air flow occurs thus shutting down the heater and energizing the blower Auxiliary Limit Switch ALS The auxiliary limit switch is wired in series with the limit switch As such the UCB c...

Page 58: ...let are free of any debris or obstruction Operating Instructions Lighting The Main Burners 1 Turn OFF electric power to unit 2 Turn room thermostat to lowest setting 3 Turn gas valve counter clockwise...

Page 59: ...e 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 mu...

Page 60: ...crease the blower CFM to decrease the temperature rise decrease the blower CFM to increase the rise See SUPPLY AIR DRIVE ADJUSTMENT NOTE Each gas heat exchanger size has a minimum allowable CFM Below...

Page 61: ...le 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...

Page 62: ...stat connection strip R terminal right FAN OVR pin right HPS1 pin right HPS2 pin lower DFS pin and lower APS pin Terminal Thermostat connection strip on left edge of UCB W1 1st stage heating request 2...

Page 63: ...sensor input from 10K 77 F Type III negative temperature coefficient thermistor Input required for operation but may be a communicated value 3 625 VDC reading OAT to OAT with open circuit Used in hea...

Page 64: ...H1 24 VAC hot output for heat section stage 1 Not effective for cooling only units Output if demand is present and permissions allow one stage or two stages of heat section operation H2 24 VAC hot ou...

Page 65: ...Not effective for one stage compressor UCBs Connects through circuit trace to the left HSP2 pin LPS2 left pin 24 VAC hot return from refrigerant circuit 2 Low Pressure Switch Not effective for one st...

Page 66: ...ected 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 higher than FC bus BACnet MSTP communication circuit FC FC Field Con...

Page 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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