Table of Contents
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R-410A
ZT SERIES W/SMART EQUIPMENT™
3 - 5 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Side Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power And Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Optional Gas Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Economizer Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dry Bulb Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Single Enthalpy Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Dual Enthalpy Changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Auto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
1 ZT037-061 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 ZT037-061 Unit Accessory Weights . . . . . . . . . . . . . . . . . . . . 9
4 ZT037-061 Unit Physical Dimensions . . . . . . . . . . . . . . . . . . 10
5 ZT037-061 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . . . . 10
6 Side Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
7 Left/End Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
10 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
11 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . . 25
12 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . . . . 26
13 Gas Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . . . . 27
14 Smart Equipment™ Economizer Board Details . . . . . . . . . . 32
15 Supply Air Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
16 Altitude/Temperature Correction Factors . . . . . . . . . . . . . . . 36
17 Airflow Performance - Side Duct Application . . . . . . . . . . . . . 39
1 Unit Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
®
4 Predator
Component Location (ZT037 Shown) . . . . . . . . . . 7
5 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 ZT037-061 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 9
8 ZT037-061 Unit Bottom Duct Openings . . . . . . . . . . . . . . . . 11
9 ZT037-061 Unit Electrical Entry . . . . . . . . . . . . . . . . . . . . . . 12
10 ZT037-061 Unit Side Duct Openings . . . . . . . . . . . . . . . . . . 12
11 ZT037-061 Unit Left/End Duct Opening . . . . . . . . . . . . . . . . 13
12 ZT037-061 Roof Curb. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
13 ZT037-061 Transition Roof Curb . . . . . . . . . . . . . . . . . . . . . 14
14 ZT037-061 Roof Curb Cutaway . . . . . . . . . . . . . . . . . . . . . . 14
15 Side Panels With Hole Plugs . . . . . . . . . . . . . . . . . . . . . . . . 15
16 Return Downflow Plenum With Panel . . . . . . . . . . . . . . . . . . 15
TABLE OF CONTENTS
Free Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Power Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Airflow Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Checking Air Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Cooling Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Electric Heating Sequence Of Operations. . . . . . . . . . . . . . . . 46
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . . . . 47
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . . . . 47
Ignition Control Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . . . . 48
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Control Board Navigation Components . . . . . . . . . . . . . . . . . . . . 52
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
LIST OF TABLES
18 Airflow Performance - Bottom Duct Application . . . . . . . . . . 40
19 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
20 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 41
21 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . . . . . 41
22 Motor Sheave Datum Diameters . . . . . . . . . . . . . . . . . . . . . . 43
23 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . . . . 44
24 Electric Heat Limit Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
25 Electric Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 47
26 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . . . . 49
27 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . . . . 51
28 Gas Heat Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
29 Smart Equipment™ UCB Details . . . . . . . . . . . . . . . . . . . . . 53
31 Ignition Control Flash Codes . . . . . . . . . . . . . . . . . . . . . . . . . 59
32 ZT037 Charging Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
33 ZT049 Charging Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
34 ZT061 Charging Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
LIST OF FIGURES
17 Discharge Panel In Place . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
18 Save Side Panels For Economizer Hood Tops . . . . . . . . . . 15
19 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
20 Field Wiring Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
21 Typical Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
22 Side Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
23 Bottom Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
24 Simplified VFD Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
25 SE-ECO1001-0 Economizer Controller . . . . . . . . . . . . . . . . 32
26 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
27 Altitude/Temperature Correction Factors . . . . . . . . . . . . . . . 37
28 Dry Coil Delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
29 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
30 Typical Two Stage Gas Valve . . . . . . . . . . . . . . . . . . . . . . . 52
31 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
5370596-YIM-C-0518
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Related Manuals for York Predator Z series
Summary of Contents for York Predator Z series
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Page 1: Table Of Contents
R-410A ZT SERIES W/SMART EQUIPMENT™ 3 - 5 Ton 60 Hertz TABLE OF CONTENTS General ..........2 Free Cooling Operation . -
Page 2: General
5370596-YIM-C-0518 General ® ® York Predator units are single package air conditioners with optional gas heating designed for outdoor installation on a Before performing service or maintenance operations on rooftop or slab and for non-residential use. These units can be unit, turn off main power switch to unit. - Page 3 Inspection Renewal Parts ® As soon as a unit is received, it should be inspected for possible Contact your local York parts distribution center for authorized damage during transit. If damage is evident, the extent of the replacement parts. damage should be noted on the carrier’s freight bill. A separate request for inspection by the carrier’s agent should be made in...
- Page 4 5370596-YIM-C-0518 Nomenclature ® 3-5 Ton York Model Number Nomenclature Z T 037 C A 2 A 1 Product Generation Product Category 1 = First Generation 2 = Second Generation Z = A/C, Single Pkg., R-410A Cabinet Options Product Identifier A = Std Cabinet...
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Page 5: Installation
5370596-YIM-C-0518 Installation Installation Safety Information FIRE OR EXPLOSION HAZARD Read these instructions before continuing this appliance installation. This is an outdoor combination heating and cooling Failure to follow the safety warning exactly could result unit. The installer must assure that these instructions are made in serious injury, death or property damage. -
Page 6: Limitations
5370596-YIM-C-0518 National Fuel Gas Code, ANSI Z223.1 - Latest Edition Gas-Fired Central Furnace Standard, ANSI Z21.47a. - Latest Edition Local building codes, and Local gas utility requirements In Canada: Toolless Doorknobs Canadian Electrical Code, CSA C22.1 Installation Codes, CSA - B149.1. Local plumbing and waste water codes, and Other applicable local codes. -
Page 7: Location
Roof curbs in eight-and steel tubular heat fourteen-inch heights. exchanger for long life Roof curbs for transitioning (stainless steel option) from York Sunline™ footprint to the ZT Series footprint Two stage gas heating to are available Side entry power maintain warm, comfortable... -
Page 8: Rigging And Handling
If a unit is to be installed on a roof curb other than a Figure 6: Center of Gravity ® York roof curb, gasketing must be applied to all surfaces that come in contact with the unit underside. Table 2: Weights and Dimensions Weight (lbs.) -
Page 9: Zt037-061 Unit Accessory Weights
5370596-YIM-C-0518 Table 3: ZT037-061 Unit Accessory Weights Weight (lbs.) Unit Accessory Shipping Operating Economizer Power Exhaust Electric Heat Gas Heat 1. Weight given is for the maximum heater size available (24KW). 2. Weight given is for the maximum number of tube heat exchangers available (8 tube). -
Page 10: Zt037-061 Unit Physical Dimensions
5370596-YIM-C-0518 Table 4: ZT037-061 Unit Physical Dimensions Dimension (in.) Unit Model Number ZT037 22 1/8 18 3/16 15 3/16 6 3/16 ZT049 22 1/8 18 3/16 15 3/16 6 3/16 ZT061 22 1/8 18 3/16 15 3/16 6 3/16 Detail A Detail B 3.184 Gas Pipe Inlet... -
Page 11: Zt037-061 Unit Bottom Duct Openings
5370596-YIM-C-0518 32 11/16 6 13/16 6 13/16 RETURN SUPPLY 27 1/2 LEFT RIGHT 20 1/8 19 1/8 17 1/8 12 5/16 Bottom condensate drain 14 1/2 25 9/16 Bottom gas supply entry 16 3/8 18 1/16 FRONT TOP VIEW Bottom power, control and convenience outlet wiring entry 3X Ø... -
Page 12: Side Duct Dimensions
5370596-YIM-C-0518 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 Figure 9: ZT037-061 Unit Electrical Entry 1 8 - 1 /4 D o t P l u g s Return Supply Air 2 - 3 1 /3 2... -
Page 13: Left/End Duct Dimensions
5370596-YIM-C-0518 4-5/16 Figure 11: ZT037-061 Unit Left/End Duct Opening Table 7: Left/End Duct Dimensions Dimension (in.) Unit Model Number ZT037 30.357 13.365 22.516 ZT049 30.357 13.365 22.516 ZT061 30.357 13.365 22.516 RIGHT 80-5/8 INSULATED DECK UNDER CONDENSER SECTION SUPPLY RETURN 2 TYP. -
Page 14: Zt037-061 Transition Roof Curb
5370596-YIM-C-0518 2 TYP 23 4 30-1/2 50-1/2 80-5/8 RETURN SUPPLY 76-5/8 59-1/4 FRONT RIGHT 64-1/4 Figure 13: ZT037-061 Transition Roof Curb 2“ 3/4” X 1-1/4” WIDE GASKETING FOR CURB FRAME AND ALL DUCT SUPPORT SURFACES UNIT BASE 3.75” WOOD NAILER 3.56”... -
Page 15: Ductwork
5370596-YIM-C-0518 Ductwork Ductwork should be designed and sized according to the methods in Manual D of the Air Conditioning Contractors of America (ACCA) or as recommended by any other recognized authority such as ASHRAE or SMACNA. A closed return duct system should be used. This will not preclude use of economizers or outdoor fresh air intake. -
Page 16: Compressors
5370596-YIM-C-0518 condensate drain connection is available through the base pan readily. POE oil can absorb 15 times as much water as other oils for piping inside the roof curb. Trap the connection per Figure 19. designed for HCFC and CFC refrigerants. Take all necessary The trap and drain lines should be protected from freezing. -
Page 17: Filters
If installing a disconnect (field the capacity of the unit and result in frosted coils or safety ® supplied or York International supplied accessory), refer to shutdown. Refer to physical data tables, for the number and Figure 4 for the recommended mounting location. -
Page 18: Field Wiring Disconnect
5370596-YIM-C-0518 Power Wiring Detail Units are factory wired for the voltage shown on the unit Power wiring is brought into the unit through the side of the unit nameplate. Refer to Electrical Data Table 9 to size power or the basepan inside the curb. wiring, fuses, and disconnect switch. -
Page 19: Control Wire Sizes
5370596-YIM-C-0518 unit. Refer to Table 8 for control wire sizing and maximum Thermostat Wiring length. The thermostat should be located on an inside wall approximately 56 inch above the floor where it will not be Table 8: Control Wire Sizes subject to drafts, sun exposure or heat from electrical fixtures or appliances. -
Page 20: Electrical Data
5370596-YIM-C-0518 Table 9: Electrical Data ZT037-061 Standard Indoor Blower - Without Powered Convenience Outlet OD Fan Supply Max Fuse Compressors Max Fuse Motors Blower Conv Electric Heat Option Breaker (each) Size w/Pwr Breaker (each) Motor Motor Outlet Volt Size w/ (Tons) (Amps) Size... - Page 21 5370596-YIM-C-0518 ZT037-061 Hi Static Indoor Blower - Without Powered Convenience Outlet OD Fan Supply Max Fuse Compressors Max Fuse Motors Blower Conv Electric Heat Option Breaker (each) Size w/Pwr Breaker (each) Motor Motor Outlet Volt Size w/ (Tons) (Amps) Size Pwr Exh (Amps) (Amps)
- Page 22 5370596-YIM-C-0518 ZT037-061 Standard Indoor Blower - With Powered Convenience Outlet OD Fan Supply Max Fuse Compressors Max Fuse Motors Blower Conv Electric Heat Option Breaker (each) Size w/Pwr Breaker (each) Motor Motor Outlet Volt Size w/ (Tons) (Amps) Size Pwr Exh (Amps) (Amps) RLA LRA...
- Page 23 5370596-YIM-C-0518 ZT037-061 Hi Static Blower - With Powered Convenience Outlet OD Fan Supply Max Fuse Compressors Max Fuse Motors Blower Conv Electric Heat Option Breaker (each) Size w/Pwr Breaker (each) Motor Motor Outlet Volt Size w/ (Tons) (Amps) Size Pwr Exh RLA LRA Model Stages...
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Page 24: Physical Data
5370596-YIM-C-0518 Table 10: Physical Data ZT037-061 Models Component ZT037 ZT049 ZT061 Nominal Tonnage AHRI COOLING PERFORMANCE Gross Capacity @ AHRI A point (MBh) 38000 51200 61600 AHRI net capacity (MBh) 37000 50000 60000 13.05 14.0 13.00 SEER (208/230 & 460V) 17.0 17.5 16.3... -
Page 25: Optional Electric Heat
5370596-YIM-C-0518 ZT037-061 (Continued) Models Component ZT037 ZT049 ZT061 Nominal Tonnage CONDENSER FAN DATA Quantity of fans Fan diameter (Inch) Type Prop Prop Prop Drive type Direct ECM Direct ECM Direct ECM Quantity of motors Motor HP each No. speeds Var. Var. -
Page 26: Optional Gas Heat
5370596-YIM-C-0518 Optional Gas Heat These gas-fired heaters have aluminized-steel or optional stainless steel, tubular heat exchangers with spark ignition. OPTIONAL Gas Piping COIL GUARD Proper sizing of gas piping depends on the cubic feet per hour SHOWN of gas flow required, specific gravity of the gas and the length of run. -
Page 27: Gas Heat Minimum Supply Air
5370596-YIM-C-0518 Table 13: Gas Heat Minimum Supply Air Supply Air (CFM) Size Model Heat Size Heating (Tons) 2220 2370 1130 1800 2220 2370 1290 2250 2370 1380 2570 1580 2630 Gas Connection The gas supply line can be routed within the space and roof curb, exiting through the unit’s basepan. -
Page 28: Options/Accessories
5370596-YIM-C-0518 For satisfactory operation, LP gas pressure must be 10.5 inch electric heaters are fused and intended for use with single point W.C. at the unit under full load. Maintaining proper gas power supply. pressure depends on three main factors: Smoke Detectors The vaporization rate which depends on the temperature of the liquid and the “wetted surface”... -
Page 29: Simplified Vfd Wiring
5370596-YIM-C-0518 the assembly. Field installed Motorized Outdoor Damper Manual Bypass accessories include complete instructions for installation. An optional, factory-installed manual bypass switch available with factory-installed VFD can be found in the Blower Motor Economizer Access compartment and has the following three positions: The Economizer can be a factory installed option or a field installed accessory. -
Page 30: Economizer Sequences
5370596-YIM-C-0518 Dual Enthalpy Changeover For dual enthalpy economizer operation, the outside air enthalpy must be lower than the return air enthalpy by 1 btu/lb The fuses (FU3, FU4, FU5) supplied with the unit are AND the outside air temperature is no greater than the RAT sized according to the electrical load of the blower plus 9°F. -
Page 31: Power Exhaust
5370596-YIM-C-0518 At no time will a compressor output be turned ON if the e. Building Pressure Sensor Enabled economizer output is less than 100%, even if the differential f. Econo Damper Position For Exh Fan ON Percent between zone (or return) temperature and the current cooling g. -
Page 32: Smart Equipment™ Economizer Board Details
5370596-YIM-C-0518 Figure 25: SE-ECO1001-0 Economizer Controller Table 14: Smart Equipment™ Economizer Board Details Board Cover Description Function & Comments Label Label Directional orientation: viewed with the center text of the cover label upright ANALOG INPUTS Terminal at left on upper edge of economizer board 24 VAC common/0-10 VDC negative for Connects through circuit trace to 24V~ IN pin COM economizer actuator position feedback... - Page 33 5370596-YIM-C-0518 Table 14: Smart Equipment™ Economizer Board Details (Continued) Board Cover Description Function & Comments Label Label EconCtrlr parameter reports UCB-to-economizer board SA BUS communication status. Positive of the VDC (typically, a fluctuating 1.5 to 3.5 volts reading to C; at least 0.25 volts lower –...
- Page 34 5370596-YIM-C-0518 Table 14: Smart Equipment™ Economizer Board Details (Continued) Board Cover Description Function & Comments Label Label 24 VAC hot connection to power the economizer board. 24 VAC transformer HOT Connects through circuit traces to R/24V~ terminals and pins distributed on the economizer board. ANALOG INPUTS Terminal on lower edge of economizer board 24 VAC hot supplied for the outdoor air 24V~...
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Page 35: Supply Air Limitations
5370596-YIM-C-0518 Table 14: Smart Equipment™ Economizer Board Details (Continued) Board Cover Description Function & Comments Label Label 24 VAC common/0-5 VDC negative for the Connects through circuit trace to 24V~ IN pin COM building pressure sensor BINARY INPUTS at right on lower edge of economizer board Purge parameter reports input status (False with 0 VAC input- True with 24 VAC input). -
Page 36: Altitude/Temperature Correction Factors
5370596-YIM-C-0518 Belt Tension The tension on the belt should be adjusted as shown in Figure 26. 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 to apply a perpendicular force to one belt at the midpoint of the span as shown. -
Page 37: Altitude/Temperature Correction Factors
5370596-YIM-C-0518 1.100 1.050 1.000 Sea Level 0.950 1000 ft 0.900 2000 ft 3000 ft 0.850 4000 ft 0.800 5000 ft 6000 ft 0.750 7000 ft 8000 ft 0.700 9000 ft 10000 ft 0.650 0.600 Air Temperature (ºF) Figure 27: Altitude/Temperature Correction Factors The examples below will assist in determining the airflow blower tables to select the blower speed and the BHP performance of the product at altitude. - Page 38 5370596-YIM-C-0518 Drive Selection Determine side or bottom supply duct Application. Determine desired airflow. Calculate or measure the amount of external static pressure. Using the operating point determined from steps 1, 2 & 3, locate this point on the appropriate supply air blower performance table.
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Page 39: Airflow Performance - Side Duct Application
5370596-YIM-C-0518 Airflow Performance Table 17: Airflow Performance - Side Duct Application ZT037 (3.0 Ton) Side Duct Available External Static Pressure - IWG Air Flow (CFM) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard 1.5 Hp &... -
Page 40: Airflow Performance - Bottom Duct Application
5370596-YIM-C-0518 Table 18: Airflow Performance - Bottom Duct Application ZT037 (3.0 Ton) Bottom Duct Available External Static Pressure - IWG Air Flow (CFM) RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP Standard 1.5 Hp &... -
Page 41: Air Balance
5370596-YIM-C-0518 Table 19: RPM Selection Size Motor Blower 6 Turns 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully Model Airflow Option (Tons) Sheave Sheave Open Open Open Open Open Open Closed Field Supplied 1VL34 AK79 Std. 1VL40 AK79 H. -
Page 42: Dry Coil Delta P
5370596-YIM-C-0518 NOTE: De-energize the compressors before taking any test Use an Inclined Manometer or Magnehelic to determine measurements to assure a dry evaporator coil. the pressure drop across the unit. This is the External Static Pressure (ESP). In order to obtain an accurate The CFM through the unit can be determined from the measurement, be certain that the air filters are clean. -
Page 43: Motor Sheave Datum Diameters
5370596-YIM-C-0518 EXAMPLE Supply Air Drive Adjustment A 4 ton unit was selected to deliver 1,700 CFM with a 1.5 HP motor, but the unit is delivering 1,400 CFM. The variable pitch motor sheave is set at 3 turns open. Before making any blower speed changes review the Use the equation to determine the required DD for the new installation for any installation errors, leaks or undesirable motor sheave,... -
Page 44: Additional Static Resistance
5370596-YIM-C-0518 Table 23: Additional Static Resistance Electric Heat kW Size Model CFM Cooling Only Economizer 4” Pleated Filter (Tons) 0.05 -0.05 0.01 0.00 0.00 0.00 0.01 0.01 0.01 1000 0.05 -0.03 0.02 0.00 0.00 0.00 0.02 0.02 0.02 1100 0.04 -0.02 0.03 0.01... -
Page 45: Operation
5370596-YIM-C-0518 highest stage compressor will be de-energized as long as Operation the minimum run time has elapsed. Cooling Operation Economizer With Single Enthalpy Sensor • With a demand for first stage cooling either from a When the room thermostat calls for cooling, the low voltage thermostat or space sensor, the low-voltage control circuit control circuit from “R”... -
Page 46: Electric Heating Sequence Of Operations
5370596-YIM-C-0518 Local LCD on Unit Control Board. thermostat is calling for cooling, the UCB will operate in the low ambient mode. Low ambient mode operates the compressors in this manner: Mobile Access Portal (MAP) Gateway (Portable). 10 minutes on, 5 minutes off. The indoor blower is operated throughout the cycle. -
Page 47: Electric Heat Operation Errors
5370596-YIM-C-0518 Two-stage heating: Table 24: Electric Heat Limit Setting a. Upon a call for first stage heat by the thermostat, the LIMIT HEATER heater relay (RA) will be energized. After completing the UNIT (TONS) VOLTAGE SWITCH specified fan on delay for heating, the UCB will energize OPENS °F the blower motor. -
Page 48: Ignition Control Board
5370596-YIM-C-0518 energized after the fan off delay for heating has elapsed. The will cause the appropriate action to occur. Recycling the low draft motor performs a 30-second post purge. voltage power cancels the lock-out. Ignition Control Board Temperature Limit If the UCB senses zero volts from the high temperature limit, First Stage Of Heating the indoor blower motor is immediately energized. -
Page 49: Start-Up (Cooling)
5370596-YIM-C-0518 Safety Controls Resets The UCB monitors the temperature limit switch of gas heat Remove the call for heating by lowering the thermostat setting units. lower than the conditioned space temperature. This resets any flash codes. The control circuit includes the following safety controls: Gas Heat Anticipator Setpoints Limit Switch (LS) It is important that the anticipator setpoint be correct. -
Page 50: Start-Up (Gas Heat)
5370596-YIM-C-0518 Check the supply gas pressure. It must be within the limits Post Start Check List shown on the rating nameplate. Supply pressure should be Verify proper system pressures for both circuits. checked with all gas appliances in the building at full fire. At no time should the standby gas pressure exceed 10.5 in. -
Page 51: Gas Rate Cubic Feet Per Hour
5370596-YIM-C-0518 If necessary, adjust the low pressure regulator as EXAMPLE discussed in the section “Manifold Gas Pressure By actual measurement, it takes 46 seconds for the hand on a 1 Adjustment”. Be sure not to under-fire the furnace on first cubic foot dial to make a revolution with a 80,000 Btuh furnace stage. -
Page 52: Control Board Navigation Components
5370596-YIM-C-0518 Table 28: Gas Heat Stages Unit 2nd Stage Total # of Burner 1st Stage HEAT EXCHANGER TUBE Input Input Tubes Input (Mbh) Size Opt. (Mbh) (Mbh) SUPPLY PIPE BURNER BURNER FLAME (BLUE ONLY) BURNER BRACKET IGNITOR Figure 29: Typical Flame MATE-N-LOCK HIGH &... -
Page 53: Smart Equipment™ Ucb Details
5370596-YIM-C-0518 THERMOSTAT WIRED HERE SD-24 Figure 31: Unit Control Board Table 29: Smart Equipment™ UCB Details Description Function & Comments Terminal Directional orientation: viewed with silkscreen labels upright Limit, 24 VAC power and shutdown connections from unit wiring harness at left on upper edge of UCB Monitored 24 VAC input through heat section limit If voltage is absent, indicating the heat section is over- LIMIT... -
Page 54: Yim-C
5370596-YIM-C-0518 Table 29: Smart Equipment™ UCB Details (Continued) Description Function & Comments Terminal Thermostat connection strip on left edge of UCB 1st stage heating request, 24 VAC input switched Not effective for cooling-only units from R 2nd stage heating request, 24 VAC input switched Not effective for cooling-only units or units with single-stage from R heat sections... - Page 55 5370596-YIM-C-0518 Table 29: Smart Equipment™ UCB Details (Continued) Description Function & Comments Input required for operation; 3.625 VDC reading RAT+ to RAT– Return Air Temperature sensor input from 10KΩ with open circuit. Used in return air enthalpy calculation. RAT+ @ 77°F, Type III negative temperature coefficient Substitutes for space temperature if no other space thermistor temperature input is present.
- Page 56 5370596-YIM-C-0518 Table 29: Smart Equipment™ UCB Details (Continued) Description Function & Comments Terminal at lower right corner of UCB Output relay circuitry is isolated from other UCB components 24 VAC hot for H1, H2, CN-FAN, AUX HGR, FAN 24V FOR OUTPUTS and the 24 VAC hot source may be from a second transformer C1 and C2 output relay contact switching in the unit...
- Page 57 5370596-YIM-C-0518 Table 29: Smart Equipment™ UCB Details (Continued) Description Function & Comments Not effective for one stage compressor UCBs. Input is only considered if C2 output is needed; input must be present to 24 VAC hot return from refrigerant circuit 2 High allow C1 output.
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Page 58: Cable For Fc Buses And Sa Buses In Order Of Preference
5370596-YIM-C-0518 Table 29: Smart Equipment™ UCB Details (Continued) Description Function & Comments Factory wired SA Bus connector Optional communication sub-board at center of UCB Terminal FC BUS connections on left edge of the communication board Positive of the VDC (typically, a fluctuating 1.5 to 3.5 volts FC (“Field Connected”) BUS BACnet MSTP reading to COM;... -
Page 59: Charging The Unit
5370596-YIM-C-0518 Table 31: Ignition Control Flash Codes Flashes Fault Conditions Check Steady On Control Failure Control Heartbeat Normal Operation Not Applicable Pressure Switch Stuck Closed Pressure Switch Pressure Switch Failed To Close Venter Pressure Switch Vent Blocked Main Limit Limit Switch Open AUX Limit Flame Present With Gas Off First Stage Gas Valve Energized With W1 Off Second Stage Gas Valve... -
Page 60: Zt049 Charging Table
5370596-YIM-C-0518 Table 33: ZT049 Charging Table Air Flow Outdoor Suction Suction Liquid Liquid Delta T Compressor Indoor Db/Wb Pressure Temp. Pressure Temp. Amps 300 Cfm/Ton 10.5 80/62 11.2 300 Cfm/Ton 10.6 80/67 11.3 10.0 300 Cfm/Ton 10.7 80/72 11.4 300 Cfm/Ton 10.5 75/62 11.2... -
Page 61: Start-Up Sheet
5370596-YIM-C-0518 Start-Up Sheet Johnson Controls Ducted Systems... - Page 62 5370596-YIM-C-0518 Johnson Controls Ducted Systems...
- Page 63 5370596-YIM-C-0518 Johnson Controls Ducted Systems...
- Page 64 5370596-YIM-C-0518 Johnson Controls Ducted Systems...
- Page 65 5370596-YIM-C-0518 Johnson Controls Ducted Systems...
- Page 66 Subject to change without notice. Printed in U.S.A. 5370596-YIM-C-0518 Copyright © 2018 by Johnson Controls, Inc. All rights reserved. Supersedes: 5370596-YIM B-0717 York International Corporation 5005 York Drive Norman, OK 73069...
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