Table of Contents
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R-410A
ZS SERIES W/SMART EQUIPMENT™
6-1/2 - 12-1/2 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Unit components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Rigging and handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Roof curbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Side panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Condensate drain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Power and control wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Optional electric heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Optional gas heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Optional variable air volume. . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Optional hot gas bypass (HGBP) . . . . . . . . . . . . . . . . . . . . . . . 39
Economizer sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Dry bulb changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Single enthalpy changeover. . . . . . . . . . . . . . . . . . . . . . . . . . . 39
1 Component location table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2 ZST06 through T12 unit limitations . . . . . . . . . . . . . . . . . . . . . 8
3 ZST06 through T12 weights and dimensions . . . . . . . . . . . . . 9
4 ZST06 through T12 unit accessory weights . . . . . . . . . . . . . 10
5 ZST06 through T10 unit physical dimensions . . . . . . . . . . . . 10
6 ZST12 unit physical dimensions . . . . . . . . . . . . . . . . . . . . . . 11
7 Gas inlet and drain components . . . . . . . . . . . . . . . . . . . . . . 12
8 ZST06 through T12 unit clearances . . . . . . . . . . . . . . . . . . . 12
9 ZST06 through T10 side duct dimensions . . . . . . . . . . . . . . . 15
10 ZST12 side duct dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 15
11 Left/end duct dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
12 Roof curb components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
13 Control wire sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
14 Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
15 ZST06 through T12 physical data . . . . . . . . . . . . . . . . . . . . . 31
16 Electric heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . 33
17 Gas pipe sizing - capacity of pipe . . . . . . . . . . . . . . . . . . . . . 34
18 Gas heat minimum supply air . . . . . . . . . . . . . . . . . . . . . . . . 35
1 Unit shipping bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 ZS component location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Unit 4 point load weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Unit 6 point load weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Center of gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
8 ZST06 through T10 physical dimensions . . . . . . . . . . . . . . . 10
9 ZST12 physical dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 11
10 ZST06 through T12 unit bottom duct openings . . . . . . . . . . . 13
11 ZST06 through T12 unit electrical entry . . . . . . . . . . . . . . . . . 14
12 ZST06 through T10 unit side duct openings . . . . . . . . . . . . . 15
13 ZST12 unit side duct openings . . . . . . . . . . . . . . . . . . . . . . . 15
14 ZST06 through T12 unit left duct opening . . . . . . . . . . . . . . . 16
15 ZST06 through T12 roof curb. . . . . . . . . . . . . . . . . . . . . . . . . 17
16 ZST06 through T12 transition roof curb . . . . . . . . . . . . . . . . . 17
17 Side panels with hole plugs . . . . . . . . . . . . . . . . . . . . . . . . . . 18
18 Return downflow plenum with panel . . . . . . . . . . . . . . . . . . . 18
Table of contents
Dual enthalpy changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Auto . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Free cooling operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Power exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Smart Equipment™ economizer board . . . . . . . . . . . . . . . . . . 41
Airflow performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Air balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Checking air quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Cooling sequence of operation . . . . . . . . . . . . . . . . . . . . . . . . 55
Cooling operation errors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Electric heating sequence of operations . . . . . . . . . . . . . . . . . 58
Electric heat operation errors . . . . . . . . . . . . . . . . . . . . . . . . 58
Gas heating sequence of operations . . . . . . . . . . . . . . . . . . . . 59
Ignition control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Gas heating operation errors . . . . . . . . . . . . . . . . . . . . . . . . 60
Cooling start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Gas heat start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Checking gas heat input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Charging the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Smart Equipment™ unit control board . . . . . . . . . . . . . . . . . . . . . 65
Start-up sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
List of tables
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 limit setting 50 in. cabinet . . . . . . . . . . . . . . . . . 59
29 Electric heat limit setting 42 in. cabinet . . . . . . . . . . . . . . . . . 59
30 Electric heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . 59
31 Gas heat limit control settings . . . . . . . . . . . . . . . . . . . . . . . . 61
32 Gas heat anticipator setpoints . . . . . . . . . . . . . . . . . . . . . . . . 61
33 Gas rate cubic feet per hour . . . . . . . . . . . . . . . . . . . . . . . . . 63
34 Gas heat stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
36 Ignition control flash codes . . . . . . . . . . . . . . . . . . . . . . . . . . 71
List of figures
19 Discharge panel in place . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
20 Side panels for economizer hood tops . . . . . . . . . . . . . . . . . 19
21 Condensate drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
and all units with a VFD option . . . . . . . . . . . . . . . . . . . . . . . 21
VFD option. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
24 Typical electronic thermostat field wiring. . . . . . . . . . . . . . . . 22
25 Side entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
26 Bottom entry gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
27 Simplified VFD wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
28 SE-ECO1001-0 economizer controller . . . . . . . . . . . . . . . . . 41
29 Belt adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
30 Altitude/temperature correction factors . . . . . . . . . . . . . . . . . 46
31 Dry coil delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
32 Typical flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
33 Typical gas valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
34 Unit control board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
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Related Manuals for Johnson Controls ZST06
Summary of Contents for Johnson Controls ZST06
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Page 1: Table Of Contents
30 Altitude/temperature correction factors ....46 15 ZST06 through T12 roof curb......17 31 Dry coil delta P . -
Page 2: General
Be sure to follow all other applicable safety 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. Johnson Controls Ducted Systems... - Page 3 Additional information is available in the following reference forms: Improper installation may create a condition where the • Technical Guide - ZST06 through T12, 5123248 operation of the product could cause personal injury or property damage. • General Installation - ZST06 through T12, 5566021 •...
- Page 4 Y = Options 4 & 5 Z = Options 3, 4 & 5 Options 1 = Disconnect 2 = Non-Pwr'd Conv. Outlet 3 = Smoke Detector S.A. 4 = Smoke Detector R.A. 5 = Pwr'd Conv. Outlet Johnson Controls Ducted Systems...
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Page 5: Installation
Turn each bracket toward the ground. The protective for 230v and 415v power supply respectively. Change plywood covering drops to the ground. the tap on the transformer for 208-3-60 or 380-3-50 Remove the condenser coil protective covering. operation. See the unit wiring diagram. Johnson Controls Ducted Systems... -
Page 6: Limitations
874-SERV for guidance. Additional accessories may be After the installation is complete, you must adjust gas fired units needed for stable operation at temperatures below 30°F. to obtain a temperature rise within the range specified on the unit rating plate. Johnson Controls Ducted Systems... -
Page 7: Unit Components
20-gauge aluminized steel tubular heat exchanger for long life Second model nameplate inside hinged access panel (stainless steel option) 1. Roof curbs for transitioning from TempMaster ZD Series footprint to the ZS Series footprints are also available (field-installed accessory). Johnson Controls Ducted Systems... -
Page 8: Location
7.2, 7.3, or 7.4 of Gas Installation Codes, CSA-B149.1 (in Canada) - latest edition, and/or applicable provisions of the • Paint removers local building codes. See ZST06 through T12 unit clearances • Varnishes 88 for the clearances required for combustible construction, •... -
Page 9: Zst06 Through T12 Weights And Dimensions
FRONT LEFT Figure 6: Unit 6 point load weight FRONT LEFT Figure 7: Center of gravity Table 3:ZST06 through T12 weights and dimensions Size Weight (lbs.) Center of gravity 4 point load location (lbs.) 6 point load location (lbs.) Model... -
Page 10: Zst06 Through T12 Unit Accessory Weights
5566021-TIM-B-1118 Table 4:ZST06 through T12 unit accessory weights Weight (lbs.) Unit accessory Shipping Operating Economizer Power exhaust Electric heat Gas heat Variable frequency drive 1. The weight given is for the maximum heater size available (54KW). 2. The weight given is for the maximum number of tube heat exchangers available (8 tubes). -
Page 11: Zst12 Unit Physical Dimensions
FOR DRAIN LOCATION LEFT 27.31 21.19 89.00 FRONT Figure 9: ZST12 physical dimensions Table 6:ZST12 unit physical dimensions Dimension (in.) Unit model number ZST12 50 3/4 119 1/2 30 3/16 24 3/16 17 3/16 6 3/16 Johnson Controls Ducted Systems... -
Page 12: Gas Inlet And Drain Components
50 3/4 inch cabinet Detail B 5-3/8 Table 7:Gas inlet and drain components Item Description Gas pipe inlet Gas exhaust vent 1 in. FPT Table 8:ZST06 through T12 unit clearances Direction Distance (in.) Direction Distance (in.) Right Front Left Rear Bottom 1. -
Page 13: Zst06 Through T12 Unit Bottom Duct Openings
Bottom gas supply entry 16 3/8 18 1/16 FRONT Top view 3X Ø 0.875 Ø 2.469 Figure 10: ZST06 through T12 unit bottom duct openings Figure 10 shows the bottom power, control, and convenience outlet wiring entry. Johnson Controls Ducted Systems... -
Page 14: Zst06 Through T12 Unit Electrical Entry
5566021-TIM-B-1118 Item Description Disconnect switch 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 Figure 11: ZST06 through T12 unit electrical entry Johnson Controls Ducted Systems... -
Page 15: Zst06 Through T10 Side Duct Dimensions
Supply Air 2 - 3 1 /3 2 5 - 5 /3 2 3 1 - 1 1 /1 6 Figure 12: ZST06 through T10 unit side duct openings Table 9:ZST06 through T10 side duct dimensions Dimension (in.) Unit model number... -
Page 16: Left/End Duct Dimensions
5566021-TIM-B-1118 4-5/16 Figure 14: ZST06 through T12 unit left duct opening Table 11:Left/end duct dimensions Dimension (in.) Unit model number 30.357 13.365 22.516 30.357 13.365 22.516 30.358 22.580 22.330 30.358 22.580 22.330 30.358 22.580 22.330 Johnson Controls Ducted Systems... -
Page 17: Roof Curbs
Figure 15: ZST06 through T12 roof curb 23 4 30-1/2 50-1/2 80-5/8 76-5/8 59-1/4 64-1/4 Figure 16: ZST06 through T12 transition roof curb Roof curb components Item Description Return air Supply air Right side of the unit Front side of the unit 2 typ. -
Page 18: Ductwork
NOT insert the screws through the casing. You must economizer or motorized damper may be installed. You must insulate and water-proof outdoor ductwork. keep these panels to use them as tops for the economizer rain hoods (see Figure 20). Johnson Controls Ducted Systems... -
Page 19: Condensate Drain
R-410A refrigerant and cannot be interchanged. Always install filters ahead of evaporator coil. Keep the filters clean and replace them with filters of the same size and type. Dirty filters reduce the capacity of the unit and result in frosted Johnson Controls Ducted Systems... -
Page 20: Power And Control Wiring
Field alteration to water or moisture cannot be drawn into the unit during comply with electrical codes is not required. normal operation. These water-proofing conditions also apply when you install a field-supplied disconnect switch. Johnson Controls Ducted Systems... -
Page 21: Field Wiring Disconnect - Cooling Unit With Or Without Electric Heat And All Units With A Vfd Option
Figure 22: Field wiring disconnect - cooling unit with or without electric heat and all units with a VFD option CONTACTOR 1M FACTORY OR FIELD GROUND SUPPLIED DISCONNECT THREE PHASE POWER SUPPLY Figure 23: Field wiring disconnect - cooling unit with gas heat without a VFD option Johnson Controls Ducted Systems... -
Page 22: Control Wire Sizes
Figure 24: Typical electronic thermostat field wiring 208/230-3-60 and 380/415-3-50 units control transformers are factory wired for 230v and 415v power supply respectively. Change the tap on the transformer for 208-3-60 or 380-3-50 operation. See the unit wiring diagram. Johnson Controls Ducted Systems... -
Page 23: Electrical Data
5566021-TIM-B-1118 Table 13:Electrical data ZST06 through T12 standard motor - without powered convenience outlet OD fan Supply Max fuse Compressors Pwr exh Max fuse motors blower conv Electric heat option breaker (each) motor Size breaker (each) motor outlet Volt with pwr... - Page 24 5566021-TIM-B-1118 ZST06 through T12 standard motor - without powered convenience outlet (continued) OD fan Supply Max fuse Compressors Pwr exh Max fuse motors blower conv Electric heat option breaker (each) motor Size breaker (each) motor outlet Volt with pwr size with...
- Page 25 5566021-TIM-B-1118 ZST06 through T12 high static motor - without powered convenience outlet OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker size with...
- Page 26 5566021-TIM-B-1118 ZST06 through T12 high static motor - without powered convenience outlet (continued) OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker...
- Page 27 5566021-TIM-B-1118 ZST06 through T12 standard motor - with powered convenience outlet OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker size with...
- Page 28 5566021-TIM-B-1118 ZST06 through T12 standard motor - with powered convenience outlet (continued) OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker size with...
- Page 29 5566021-TIM-B-1118 ZST06 through T12 high static motor - with powered convenience outlet OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker size with...
- Page 30 5566021-TIM-B-1118 ZST06 through T12 high static motor - with powered convenience outlet (continued) OD fan Supply Max fuse Compressors Pwr exh motors blower conv Electric heat option Max fuse breaker (each) motor Size (each) motor outlet Volt with pwr breaker...
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Page 31: Zst06 Through T12 Physical Data
5566021-TIM-B-1118 Table 14:ZST06 through T12 physical data Models Component ZST06 ZST07 ZST08 ZST10 ZST12 Nominal tonnage 12.5 AHRI cooling performance Gross capacity @ AHRI A point (Mbh) 76500 90000 98800 121400 148000 AHRI net capacity (Mbh) 74000 84000 96000 117000 145000 11.2... - Page 32 5566021-TIM-B-1118 Table 14:ZST06 through T12 physical data (continued) Models Component ZST06 ZST07 ZST08 ZST10 ZST12 Nominal tonnage 12.5 Condenser fan data Quantity of fans Fan diameter (inches) Type Prop Prop Prop Prop Prop Drive type Direct Direct Direct Direct Direct...
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Page 33: Optional Electric Heat
2550 2550 2550 2550 208/230-3-60 3000 3000 3000 3500 460-3-60 3000 3000 3000 3000 (10) 600-3-60 3000 3000 3000 3500 208/230-3-60 3750 3750 3750 4000 460-3-60 3750 3750 3750 3750 (12.5) 600-3-60 3750 3750 3750 3750 Johnson Controls Ducted Systems... -
Page 34: Optional Gas Heat
Note: There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a 3/ 4 inch pipe connection at the entrance fitting. The line must not be sized smaller than the entrance fitting size. Johnson Controls Ducted Systems... -
Page 35: Gas Heat Minimum Supply Air
The unit may be converted in the field for Check all joints for leaks with soap solution or other use with LP gas with accessory kit model 1NP0442. material suitable for the purpose. Never use a flame. Johnson Controls Ducted Systems... -
Page 36: Options And Accessories
Electric heaters are available as factory-installed options or maintenance procedures, refer to the smoke detector's field-installed accessories. Refer to electric heat instructions for installation instructions that accompany the unit. installation. These heaters mount in the heat compartment with Johnson Controls Ducted Systems... -
Page 37: Optional Variable Air Volume
VFD to control the output of the indoor An optional, factory-installed manual bypass switch is available blower motor. with factory-installed VFD. The manual bypass switch is located in the blower motor access compartment. The manual bypass has the following three positions: Johnson Controls Ducted Systems... -
Page 38: Simplified Vfd Wiring
The specific relay part number required depends on the need for either AC-output or DC-output. Refer to the price pages for further details. Do not connect AC power to the T1, T2, T3 drive terminals to prevent damage to the VFD. Johnson Controls Ducted Systems... -
Page 39: Optional Hot Gas Bypass (Hgbp)
For dry bulb economizer operation, the outside air is suitable for the economizer setpoint, the first stage compressor (C1) will be free cooling if the outside air temperature is 1°F below the turned on. Second stage compressor (C2) will be added as Johnson Controls Ducted Systems... -
Page 40: Power Exhaust
De-energizes the exhaust fan when the economizer economizer output will modulate to minimum position and the output is below the economizer damper position for compressor outputs will be de-energized as long as their exhaust fan off minimum run timers have expired. Johnson Controls Ducted Systems... -
Page 41: Smart Equipment™ Economizer Board
24 VAC hot supplied for the supply air humidity 24V~ Connects through circuit trace to 24V~ IN pin HOT sensor 0-10 VDC positive input from the Supply Air SAH parameter reports input status (0-100%H). Unused in Humidity sensor current control revision. Johnson Controls Ducted Systems... - Page 42 USB flash drive) Lit/flickering indicates UCB-to-economizer board SA bus Green UCB SA bus communication SA BUS SA BUS communication is currently active, off indicates the economizer transmission indicator board is awaiting SA bus communication Johnson Controls Ducted Systems...
- Page 43 ECON 2-10 VDC output for the Economizer actuator demand ventilation, cooling economizer loading and purge functions 24 VAC common/0-10 VDC negative for Connects through circuit trace to 24V~ IN pin COM economizer actuator Johnson Controls Ducted Systems...
- Page 44 - part no. 2AQ04700524 there is no call for free cooling, the actuator is proportionately • Optional CO sensor kit - part no. 2AQ04700624 modulated from the 0 to 10 VDC signal, with 0 VDC Johnson Controls Ducted Systems...
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Page 45: Supply Air Limitations
Tension new belts at the max. deflection force less power is required than a similar application at sea level. Air recommended for the belt section. density correction factors are shown in the Altitude/temperature Re-tighten the belt nuts. correction factors table and Figure 30. Johnson Controls Ducted Systems... -
Page 46: Altitude/Temperature Correction Factors
Corrected BHP = 4.0 x 0.832 = 3.328 BHP at 5,000 ft. = 3.2 x .832 = 2.66 Example 2: A system, located at 5,000 feet of elevation, is to deliver 6,000 CFM at a static pressure of 1.5 in. Use the unit Johnson Controls Ducted Systems... - Page 47 4 turns 3 turns 2 turns 1 turn Fully Model Max BHP (tons) sheave sheave open open open open open open closed 1.73 1VM50 AK74 1035 1079 1126 2.30 1VM50 AK64 1039 1094 1150 1207 1256 1308 Johnson Controls Ducted Systems...
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Page 48: Airflow Performance
5566021-TIM-B-1118 Airflow performance Table 20:Airflow performance - side duct application ZST06 (6.5 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 Field supplied drive Standard 1.5 HP and drive... - Page 49 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. Johnson Controls Ducted Systems...
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Page 50: Airflow Performance - Bottom Duct Application
5566021-TIM-B-1118 Table 21:Airflow performance - bottom duct application ZST06 (6.5 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 Field supplied drive Standard 1.5 HP and drive... -
Page 51: Rpm Selection
2.30 1VM50 AK94 (8.5) 3.45 1VM50 AK74 1035 1084 1134 2.30 1VM50 AK84 (10) 3.45 1VM50 AK74 1035 1084 1134 3.45 1VM50 AK74 1035 1084 1134 (12.5) 5.75 1VP56 BK77 1052 1095 1136 1175 1216 1272 Johnson Controls Ducted Systems... -
Page 52: Air Balance
After you note the readings, remove the tubes and replace adjustments. Re-check the set screws after 10-12 hours the dot plugs. of run time. Tighten the blower pulley and motor sheave set screws after any adjustments. Re-check the set screws after 10-12 hours run time. Johnson Controls Ducted Systems... -
Page 53: Dry Coil Delta P
Determine the number of turns the variable motor sheave is open. ZST06 0.45 ZST08 ZST07 ZST10 ZST12 0.35 0.25 0.15 0.05 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 Airflow (CFM) Figure 31: Dry coil delta P Johnson Controls Ducted Systems... -
Page 54: Motor Sheave Datum Diameters
CFM. You must adjust the blower speed and belt tension. Verify proper sheave alignment. Tighten the blower pulley and motor sheave set screws after these adjustments. Re-check the set screws after 10-12 hours of run time. Johnson Controls Ducted Systems... -
Page 55: Operation
Unit Control Board (UCB) which then determines whether is available and if so, which components to energize. With a Y2 the requested operation is available and if so, which call for first stage cooling the UCB determines if a second stage Johnson Controls Ducted Systems... - Page 56 If the enthalpy of the outdoor air is below the setpoint VAV Cooling Supply Air Temp Lower setpoint of the enthalpy controller (previously determined), Y1 energizes (default 55° F) the economizer. The dampers modulate to maintain a constant Johnson Controls Ducted Systems...
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Page 57: Cooling Operation Errors
Local LCD on the unit control board. Low ambient cooling To determine when to operate in low ambient mode, the UCB has an Outdoor Air Temperature Sensor (OAT) with a low Johnson Controls Ducted Systems... -
Page 58: Electric Heating Sequence Of Operations
This shuts down the heater and energizes the blower. The ASCD is initiated on unit start-up and on any compressor reset or lock-out. Johnson Controls Ducted Systems... -
Page 59: Gas Heating Sequence Of Operations
GV, the UCB initiates the fan on delay for heating, energizing opens °F the indoor blower the specified delay has elapsed. ZST06, T07 (6.5, 7.5) 208/230 When the thermostat is satisfied, heating calls are ceased. The GV is immediately closed. The blower is de-energized after the fan off delay for heating has elapsed. -
Page 60: Gas Heating Operation Errors
Limit switch on page 60. Normal operation is now allowed. The ICB monitors the pressure and roll out switches of gas heat units. Johnson Controls Ducted Systems... -
Page 61: Cooling Start-Up
Check the type of gas supply. Verify that it is the same as the conditioned space. Reducing the value below the correct the gas supply listed on the unit nameplate. setpoint gives shorter ON cycles and may result in the lowering Johnson Controls Ducted Systems... -
Page 62: Checking Gas Heat Input
Set the thermostat to the lowest temperature setting. slightly over-fired (greater than 60% input). Turn off electrical power to unit. Repeat Steps 1-6. Open the gas heat access panel. Johnson Controls Ducted Systems... -
Page 63: Gas Rate Cubic Feet Per Hour
54). screw is located adjacent to the LO marking on the valve (see Note: Each gas heat exchanger size has a minimum Figure 33). allowable CFM. Below this CFM, the limit opens. Johnson Controls Ducted Systems... -
Page 64: Charging The Unit
For more information on the Smart Equipment™ unit control board navigation, refer to the Smart Equipment™ Quick Start Guide. Note: For more in-depth sequence of operation of the Smart Equipment™ control, refer to the Smart Equipment™ Controls Sequence of Operation Overview LIT- 12011950. Johnson Controls Ducted Systems... -
Page 65: Smart Equipment™ Unit Control Board
24 VAC hot out for smoke detector, condensate overflow and/ accessories for unit shutdown are wired between thermostat or user shutdown relay switching in series connection strip SD-24 and R 24 VAC common for thermostat power Johnson Controls Ducted Systems... - Page 66 #1 refrigerant circuit Evaporator Coil temperature Input required for operation; 3.625 VDC reading EC1+ to EC1– with open EC1+ sensor input from 10KΩ @ 77°F, Type III negative circuit. Used in suction line temperature safety. temperature coefficient thermistor Johnson Controls Ducted Systems...
- Page 67 Output relay circuitry is isolated from other UCB components 24 VAC hot for H1, H2, CN-FAN, AUX HGR, 24V FOR OUTPUTS and the 24 VAC hot source may be from a second FAN C1 and C2 output relay contact switching transformer in the unit Johnson Controls Ducted Systems...
- Page 68 Three HPS2 trips in a two hour period cause a “High Pressure (left pin) Pressure Switch Switch 1 Lockout” and C2 output is then prevented until alarm reset. Connects through circuit trace to the right LPS2 pin. Johnson Controls Ducted Systems...
- Page 69 On-board, 2-line x 8-character back-lit display Display economizer, 4-stage and FDD board parameters ENTER Button for display menu acknowledgment and navigation Button for display menu navigation and zeroing of active CANCEL compressor ASCD timer 4-way Joystick for display menu navigation Johnson Controls Ducted Systems...
- Page 70 Green FC bus communication transmission FC BUS currently active, off indicates the UCB is awaiting incoming FC bus indicator communication Green communication board Isolated Power Lit indicates the UCB is supplying power to the communication sub- ISO PWR indicator board Johnson Controls Ducted Systems...
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Page 71: Cable For Fc Buses And Sa Buses In Order Of Preference
Energized With W1 Off Second Stage Gas Valve Gas Valve Energized With First Stage Gas Valve Off Gas Flow Gas Pressure Ignition Lockout Gas Valve Flame Sensor Steady off No Power Or Control Failure 24VAC or Control Johnson Controls Ducted Systems... -
Page 72: Start-Up Sheet
5566021-TIM-B-1118 Start-up sheet Johnson Controls Ducted Systems... - Page 73 5566021-TIM-B-1118 Johnson Controls Ducted Systems...
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Page 77: 5566021-Tim-B-1118
Subject to change without notice. Printed in U.S.A. 5566021-TIM-B-1118 Copyright © 2018 by Johnson Controls, Inc. All rights reserved. Supersedes: 5566021-TIM-A-0818 York International Corporation 5005 York Drive Norman, OK 73069...
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