York ZF SERIES - Field Wiring Disconnect - Cooling Unit with Gas Heat Without VFD Option

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5464597-YIM-B-0518

Johnson Controls Ducted Systems 19

Figure 23: Field Wiring Disconnect - Cooling Unit With Gas Heat Without VFD Option

THREE

PHASE

POWER

SUPPLY

FACTORY OR FIELD

SUPPLIED DISCONNECT

GROUND

LUG

CONTACTOR 1M

Main Page

Table of Contents1
General2
Installation5
Preceding Installation5
Unit Shipping Bracket5
Condenser Covering5
Compressor Section5
Limitations6
Predator ® Component Location (ZF120 Shown)6
Location7
Rigging and Handling7
ZF078-150 Unit Limitations7
Weights and Dimensions8
Unit 4 Point Load Weight8
Unit 6 Point Load Weight8
Center of Gravity8
ZF078-150 Unit Accessory Weights9
Zf078-1209
Zf15010
ZF078-150 Unit Physical Dimensions11
ZF078-150 Unit Clearances11
ZF078-150 Unit Bottom Duct Openings12
ZF078-150 Unit Electrical Entry13
ZF078-120 Unit Side Duct Openings13
Side Duct Dimensions14
Left/End Duct Dimensions14
ZF150 Unit Side Duct Openings14
ZF078-150 Unit Left Duct Opening14
Ductwork15
ZF078-150 Roof Curb15
ZF078-150 Transition Roof Curb15
Side Panels16
Condensate Drain16
Side Panels with Hole Plugs16
Return Downflow Plenum with Panel16
Discharge Panel in Place16
Save Side Panels for Economizer Hood Tops16
Compressors17
Filters17
Power and Control Wiring17
Condensate Drain17
Field Wiring Disconnect - Cooling Unit With/Without Electric Heat and All Units with VFD Option18
Field Wiring Disconnect - Cooling Unit with Gas Heat Without VFD Option19
Control Wire Sizes20
Typical Electronic Thermostat Field Wiring20
Electrical Data21
ZF078-150 Physical Data29
Optional Electric Heat31
Electric Heat Minimum Supply Air31
Optional Gas Heat32
Gas Pipe Sizing - Capacity of Pipe32
Side Entry Gas Piping32
Bottom Entry Gas Piping32
Gas Heat Minimum Supply Air33
Options/Accessories34
Optional Variable Air Volume (VAV)35
Simplified VFD Wiring36
Optional Hot Gas Bypass (HGBP)37
Economizer Sequences37
Dry Bulb Changeover37
Single Enthalpy Changeover37
Dual Enthalpy Changeover37
Auto37
Free Cooling Operation37
Power Exhaust38
Smart Equipment™ Economizer Board Details39
SE-ECO1001-0 Economizer Controller39
Supply Air Limitations42
Belt Adjustment43
Altitude/Temperature Correction Factors44
Airflow Performance - Side Duct Application46
Airflow Performance46
Airflow Performance - Bottom Duct Application48
RPM Selection49
Air Balance50
Checking Air Quantity50
Indoor Blower Specifications50
Power Exhaust Specifications50
Dry Coil Delta P51
Motor Sheave Datum Diameters52
Operation53
Cooling Sequence of Operation53
Additional Static Resistance53
Cooling Operation Errors55
Electric Heating Sequence of Operations56
Electric Heat Operation Errors56
Gas Heating Sequence of Operations57
Electric Heat Limit Setting 50" Cabinet57
Electric Heat Limit Setting 42" Cabinet57
Electric Heat Anticipator Setpoints57
Gas Heating Operation Errors58
Start-Up (Cooling)59
Gas Heat Limit Control Settings59
Gas Heat Anticipator Setpoints59
Start-Up (Gas Heat)60
Checking Gas Heat Input60
Gas Rate Cubic Feet Per Hour61
Gas Heat Stages61
Charging the Unit62
Control Board Navigation Components62
Typical Flame62
Typical Gas Valve62
Smart Equipment™ UCB Details63
Unit Control Board63
Cable for FC Buses and SA Buses in Order of Preference . 69 33 Ignition Control Flash Codes69
Start-Up Sheet70

York ZF SERIES - Field Wiring Disconnect - Cooling Unit with Gas Heat Without VFD Option

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