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Summary of Contents for York Sun Select YV28
- Page 1 Installation Manual: YORK Sun™ Select ® YV28 to YV50 York International Corporation, 5005 5759090-YIM-A-0320 York Drive, Norman, OK 73069 Revision: A-0320 www.york.com 2020-05-01 Johnson Controls Ducted Systems...
- Page 2 Tested in accordance with:...
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Page 3: Table Of Contents
Drive selection............79 Constant volume medium static....40 Airflow performance........... 80 Constant volume high static......42 Air balance............. 81 VFD Two-stage standard static...... 44 Checking air quantity..........82 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 4 Two Stage................ 91 Adjustment Of Temperature Rise........ 91 Burners/Orifices Inspection/Servicing......92 Charging tables..............93 Smart Equipment™ unit control board......96 Four-stage board............... 101 Cable recommendations..........103 Start-up sheet..............104 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 5: General
*When servicing controls, label all wires prior to including, but not limited to building, electrical, disconnecting. Reconnect wires correctly. and mechanical codes. *Verify proper operation after servicing. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 6: Inspection
Untrained Renewal parts personnel can perform basic maintenance functions of cleaning coils and filters, and replacing filters. Contact your local York parts distribution center ® Observe all the precautions in the literature, labels, for authorized replacement parts. - Page 7 CAUTION This system uses R-410A refrigerant which operates at higher pressures than R-22. No other refrigerant may be used in this system. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 8: Nomenclature
Nomenclature Figure 1: Product nomenclature Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 9: Installation
This may result in a fire or explosion, causing property damage, personal injury, or loss of life. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 10 (such as computer rooms or switchgear), call the applications department for Ducted Systems at 1-877-874-SERV for guidance. Additional accessories may be needed for stable operation at temperatures below 30°F. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 11: Unit Components
Scroll compressors in various arrangements to produce Filter access, 2-in. or 4-in. filter options two stages or four stages of cooling, depending on the selected model Condenser fans Microchannel condenser coils Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 12: Unit Limitations
Detailed unit clearances are available in the Weights and dimensions section. WARNING Do not permit overhanging structures or shrubs to obstruct the condenser air discharge outlet, combustion air inlet, or vent outlets. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 13: Rigging And Handling
The spreader bars must have a length that exceeds the largest dimension across the unit. CAUTION If a unit is installed on a roof curb other than a YORK roof curb, you must apply gasketing to all surfaces that come in contact with the unit underside. -
Page 14: Weights And Dimensions
Weights and dimensions Figure 3: YV28 to YV35 physical dimensions Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 15 Figure 4: YV40 to YV50 physical dimensions Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 16: Rain Hood Dimensions
To install the outdoor air hood, complete the following steps. While transporting the unit, the hood top panel is used as a shipping cover attached to the unit exterior as shown in Figure 7. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 17 2, slide the flange under the lip at the top of the hood assembly. Lay the panel on top of the left side and right side panels. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 18: Manual Damper Outdoor Air Hood Assembly
Figure 13: Filter support assembly the unit exterior as shown in Figure 15. Figure 15: Manual damper hood top panel Item Description Filter support Screws Item Description Hood top panel Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 19 Using three of the no. 10 screws that were removed in Step 2, attach the left side panel and right side panel to the unit as shown in Figure 18 and Figure 19. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 20: Exhaust Air Hood Assembly
To install the exhaust hood, complete the following the remaining screws in the hardware bag as steps. shown in Figure 22. The completed assembly will resemble Figure 23. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 21 See those instructions for location. Attach the hood top panel to the side panels using the screws removed in Step 2. The completed assembly will resemble Figure 28. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 22: Pressure Line Connections For Vav
DPS (identified in Step 1), down through the hole in the knock-out in the bottom of the control box, and to the desired location for obtaining the building pressure. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 23 High pressure port the unit base, route the tubing to the desired Low Pressure port location for obtaining a constant building pressure reading. Figure 33: Routing the tubing Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 24: Utilities Entry
The condensate drain connection is oriented for a through the side connection as shown in Figure 35. Item Description High SA duct pressure Low building pressure Supply air duct Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 25 Note: The trap and drain lines must be protected from freezing and the plumbing must conform to local codes. Figure 36: Trap and drain lines Item Description 3 in. minimum 2 in. minimum Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 26: Accessory Weights
Table 5: Supply fan VFD weights Supply 208/230 V 460 V 575 V fan motor 7.5 HP 17.4 14.6 10 HP 17.4 14.6 15 HP 20.9 17.4 26.5 20 HP 17.4 26.5 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 27: Roof Curbs
The following figures show the roof curbs for the units. All dimensions are in inches. Return air Supply air Figure 37: 1RC0450 roof curb dimensions The following units are compatible with 1RC0450 roof curbs. • YV28 • YV30 • YV35 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 28 Figure 38: 1RC0451 roof curb dimensions The following units are compatible with 1RC0451 roof curbs. • YV40 • YV50 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 29: Ductwork
1RB0401. This kit will aid in properly aligning the new unit with the existing roof curb. Units are shipped with compressor mountings that are factory-adjusted and ready for operation. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 30: Converting Between 2-In. And 4-In. Filters
The bracket and screw locations are shown in Figure 42. Figure 42: Metal bracket removal Item Description Metal bracket location Screws Metal bracket Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 31: Dirty Filter Switch Pressure Setting
If any of the wire supplied with the unit must be replaced, replacement wire must be of the Item Description type shown on the wiring diagram and the same Filters minimum gauge as the replaced wire. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 32: Power Wiring Detail
Power wiring is brought into the unit through the side of the unit or the basepan inside the curb. Item Description Side entry patch plate Control box door Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 33: Thermostat Wiring
56 in. above the floor. The respectively. Change the tap on the transformer for thermostat must not be subject to drafts, sun 208-3-60 operation. See the unit wiring diagram. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 34 Figure 48: Typical electronic thermostat field wiring Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 35: Toolless Access Handle Installation
Remove the bolt and washer from all three latches of each hinged access panel. See Figure 50. Retain the removed latches for reinstallation in a later step. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 36: Convenience Outlet Cover Installation
Figure 52: Toolless access handle assembly The convenience outlet cover is shipped in the floor of the control box as shown in Figure 54. Figure 54: Location of convenience outlet cover Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 37 208/230-3-60 units with a factory-installed powered convenience outlet option are wired for 230 V power supply. Change the tap on the transformer for 208-3-60 operation. Refer to the unit wiring diagram. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 38: Electrical Data
1039 1053 230-3-60 48.1 48.1 21.0 25.0 173.44 39.6 13.0 1039 1052 YV40 (40) 460-3-60 24.7 24.7 10.5 12.5 86.72 19.8 575-3-60 22.4 22.4 10.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 39 YV50 230-3-60 67.3 67.3 39.6 25.0 173.4 15.2 39.6 13.0 1381 1394 (50) 460-3-60 32.7 32.7 19.8 12.5 86.7 19.8 575-3-60 26.3 26.3 15.8 10.0 71.8 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 40: Constant Volume Medium Static
1456 230-3-60 67.3 67.3 39.6 36.0 234.0 39.6 13.0 1442 1455 YV50 (50) 460-3-60 32.7 32.7 19.8 18.0 117.0 19.8 575-3-60 26.3 26.3 15.8 14.2 95.9 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 41 230-3-60 67.3 67.3 39.6 36.0 15.2 39.6 13.0 229.8 1442 1455 YV50 (50) 460-3-60 32.7 32.7 19.8 18.0 19.8 575-3-60 26.3 26.3 15.8 14.2 95.94 15.8 90.3 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 42: Constant Volume High Static
39.6 48.0 39.6 1520 1534 230-3-60 67.3 67.3 39.6 48.0 39.6 1520 1533 YV50 (50) 460-3-60 32.7 32.7 19.8 24.0 19.8 575-3-60 26.3 26.3 15.8 19.1 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 43 15.2 39.6 1520 1534 230-3-60 67.3 67.3 39.6 48.0 15.2 39.6 1520 1533 YV50 (50) 460-3-60 32.7 32.7 19.8 24.0 19.8 575-3-60 26.3 26.3 15.8 19.1 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 44: Vfd Two-Stage Standard Static
1395 230-3-60 67.3 67.3 39.6 28.0 173.44 39.6 13.0 1381 1394 YV50 (50) 460-3-60 32.7 32.7 19.8 14.0 86.72 19.8 575-3-60 26.3 26.3 15.8 11.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 45 230-3-60 67.3 67.3 39.6 25.0 173.4 15.2 39.6 13.0 1381 1394 YV50 (50) 460-3-60 32.7 32.7 19.8 12.5 86.7 19.8 575-3-60 26.3 26.3 15.8 10.0 71.8 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 46: Vfd Two-Stage Medium Static
1456 230-3-60 67.3 67.3 39.6 42.0 234.0 39.6 13.0 1442 1455 YV50 (50) 460-3-60 32.7 32.7 19.8 21.0 117.0 19.8 575-3-60 26.3 26.3 15.8 18.0 95.9 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 47 1442 1456 230-3-60 67.3 67.3 39.6 42.0 15.2 39.6 13.0 1442 1455 YV50 (50) 460-3-60 32.7 32.7 19.8 21.0 19.8 575-3-60 26.3 26.3 15.8 18.0 95.94 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 48: Vfd Two-Stage High Static
39.6 74.8 39.6 1520 1534 230-3-60 67.3 67.3 39.6 74.8 39.6 1520 1533 YV50 (50) 460-3-60 32.7 32.7 19.8 27.0 19.8 575-3-60 26.3 26.3 15.8 22.0 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 49 15.2 39.6 1520 1534 230-3-60 67.3 67.3 39.6 74.8 15.2 39.6 1520 1533 YV50 (50) 460-3-60 32.7 32.7 19.8 27.0 19.8 575-3-60 26.3 26.3 15.8 22.0 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 50: Vfd Four-Stage Standard Static
39.1 39.1 39.6 28.0 173.44 39.6 13.0 1430 1443 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 14.0 86.72 19.8 575-3-60 26.3 15.4 15.4 15.8 11.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 51 39.1 39.6 28.0 173.44 15.2 39.6 13.0 1430 1443 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 14.0 86.72 19.8 575-3-60 26.3 15.4 15.4 15.8 11.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 52: Vfd Four-Stage Medium Static
230-3-60 67.3 39.1 39.1 39.6 42.0 39.6 13.0 1491 1504 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 21.0 19.8 575-3-60 26.3 15.4 15.4 15.8 18.0 95.94 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 53 67.3 39.1 39.1 39.6 42.0 15.2 39.6 13.0 1491 1504 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 21.0 19.8 575-3-60 26.3 15.4 15.4 15.8 18.0 95.94 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 54: Vfd Four-Stage High Static
1583 230-3-60 67.3 39.1 39.1 39.6 74.8 39.6 13.0 1569 1582 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 27.0 19.8 575-3-60 26.3 15.4 15.4 15.8 22.0 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 55 230-3-60 67.3 39.1 39.1 39.6 74.8 15.2 39.6 13.0 1569 1582 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 27.0 19.8 575-3-60 26.3 15.4 15.4 15.8 22.0 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 56: Vfd Customer Supplied Standard Static
39.1 39.1 39.6 25.0 173.44 39.6 13.0 1430 1443 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 12.5 86.72 19.8 575-3-60 26.3 15.4 15.4 15.8 10.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 57 39.1 39.6 25.0 173.44 15.2 39.6 13.0 1430 1443 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 12.5 86.72 19.8 575-3-60 26.3 15.4 15.4 15.8 10.0 71.77 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 58: Vfd Customer Supplied Medium Static
230-3-60 67.3 39.1 39.1 39.6 36.0 39.6 13.0 1491 1504 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 18.0 19.8 575-3-60 26.3 15.4 15.4 15.8 14.2 95.94 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 59 67.3 39.1 39.1 39.6 36.0 15.2 39.6 13.0 1491 1504 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 18.0 19.8 575-3-60 26.3 15.4 15.4 15.8 14.2 95.94 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 60: Vfd Customer Supplied High Static
1583 230-3-60 67.3 39.1 39.1 39.6 48.0 39.6 13.0 1569 1582 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 24.0 19.8 575-3-60 26.3 15.4 15.4 15.8 19.1 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 61 230-3-60 67.3 39.1 39.1 39.6 48.0 15.2 39.6 13.0 1569 1582 YV50 (50) 460-3-60 32.7 18.6 18.6 19.8 24.0 19.8 575-3-60 26.3 15.4 15.4 15.8 19.1 15.8 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 62: Physical Data
Fan diameter (in.) Type Prop Prop Drive type Direct Direct Number of motors Motor HP each 1140 1140 Nominal total CFM 28530 29800 Belt drive evap fan data Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 63 15-25 35-50 Gas limit setting (ºF) (top/bottom) 140/160 140/140 Gas piping connection (in.) 1 1/4 1 1/4 Dimensions (in.) Length Width Height Operating weight (lb) 4191 5742 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 64 3 - (20 x 25 x 4) 8 - (20 x 25 x 4) 3089 / 3603 3046 / 3690 5778 / 6566 5470 / 6217 ID Blower power (kW) Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 65 Fan diameter (in,) Type Prop Drive type Direct Number of motors Motor HP each 1200 Nominal total CFM 41676 Belt drive evap fan data Quantity Fan size (in.) 20x18 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 66: Optional Gas Heat
Proper sizing of gas piping depends on the cubic feet per hour of gas flow required, specific gravity of the gas, and the length of run. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 67 90° elbow Reducer Union 7-in. long nipple 7-in. long nipple 90° elbow 28-in. pipe Caulk between pipe and base rail grommet to 3.7-in. long nipple provide watertight seal Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 68: Gas Connection
Note: Maximum capacity of pipe in cubic feet of gas per hour based upon a pressure drop of 0.3 in. W.C. and 0.6 specific gravity gas. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 69: Propane Units, Tanks, And Piping
All propane gas equipment must conform to the safety standards of the National Fire Protection Association. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 70 Using the screws removed in Step 1, attach the upper flue exhaust hood as shown in Figure 62. For units with low gas heat, the installation is now complete. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 71: Economizer Sequences
When the control determines that the outside air de-energized as long as their minimum run timers is suitable, the first stage of cooling is always free have expired. cooling. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 72: Dry Bulb Changeover
Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 73: Power Exhaust
• De-energizes the exhaust fan when the economizer output is below the economizer damper position for exhaust fan off Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 74: Smart Equipment™ Economizer Board
The MAT parameter reports input status (°F/°C), 3.65 VDC reading MAT (+) to Type III negative temperature coefficient thermistor COM (−) with open circuit. Read-only use in current control revision. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 75 Lit/flickering indicates UCB-to-economizer board SA bus communication SA BUS SA BUS Green UCB SA bus communication transmission indicator is currently active, off indicates the economizer board is awaiting SA bus communication Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 76 24 VAC hot connection to power the economizer board. Connects through circuit 24 VAC transformer HOT traces to R/24V~ terminals and pins distributed on the economizer board. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 77: Indoor Air Quality
The scroll is misphased if it is drawing low amperage, has similar suction and discharge pressures, or it produces a high noise level. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 78 To decrease belt tension, clear the top move all nuts (B or C) against bracket nuts (B) away from bracket and turn the lower nuts (C) against the bracket. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 79: Drive Selection
Fully closed sheave sheave 8.24 1VP65 - 1 3/8 1B5V124 YV28 10.90 2VP60- 1 3/8 2B5V94 1028 1064 16.13 2VP60- 1 5/8 2B5V86 1026 1066 1106 1147 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 80: Airflow Performance
Note: Blower performance includes gas heat exchangers and 2-in. filters. See the Static resistance table for additional applications. See the RPM selection table to determine the required motor sheave setting and to determine the maximum continuous BHP. kW = BHP x 0.93 Installation Manual: YORK Sun™ Select YV28 to YV50 ®... -
Page 81: Air Balance
Start the supply air blower motor. Adjust the resistances in both the supply and the return air duct systems to balance the air distribution throughout the conditioned space. The job Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 82: Checking Air Quantity
Figure 69: Indoor Coil (dry coil + std. 2-in. filters) pressure drop versus supply air CFM Item Description Large cabinet (50 t) Small cabinet (35 t) Large cabinet (40 t) Small cabinet (27.5 t and 30 t) Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 83: Supply Air Drive Adjustment
0.25 IWG, the unit delivers less CFM limitations shown in the blower performance during full economizer operation. tables. • You can adjust pulleys in half turn increments. • Adjust the belt tension. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 84: Operation
The FAN output for indoor fan operation and remains On until 24 V is present energizes with any cooling output after the again on the MV terminal. Fan On Delay for Cool expires. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 85: Two Stage Gas Heat Ignition Control Board Function
Low heat The ICB keeps the main gas valve and induced draft motor energized while continuously monitoring the call for heat, low pressure switch, and flame status. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 86: Post Purge
"9" on the LED. During the hard lockout, the control Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 87: Cooling Start-Up
Measure the temperature drop across the evaporator coil. Measure the system amperage draw across all legs of 3 phase power wires. Measure the condenser fan amperage draw. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 88: Gas Heat Start-Up
Set the thermostat to the lowest temperature setting. Turn off all electrical power to unit. Open the gas heat access panel. Turn the gas valve switch to the OFF position. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 89 For modulating furnaces, when commissioning is complete return the System Selection bottom pin jumper to NORM OPERATION on the Modulating Furnace Control. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 90: Checking Gas Heat Input
Btu content of the gas in your particular locality (contact your gas company for this information as it varies widely from area to area). Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 91: Manifold Gas Pressure Adjustment
COMMISSION mode to maintain full input. checked, adjust the thermostat to call for first After the temperature rise has been determined, the stage heat. CFM can be calculated as follows: Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 92: Burners/Orifices Inspection/Servicing
Burner Disconnect wiring to the gas valve. Remove Orifice the manifold and gas valve assembly. Orifices Manifold can now be inspected and/or replaced. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... -
Page 93: Charging Tables
300 cfm/ton; 75/62 75/62 400 cfm/ton; 400 cfm/ton; 80/62 80/62 400 cfm/ton; 400 cfm/ton; 80/67 80/67 400 cfm/ton; 400 cfm/ton; 80/72 80/72 400 cfm/ton; 400 cfm/ton; 75/62 75/62 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 94 300 cfm/ton; 75/62 75/62 400 cfm/ton; 400 cfm/ton; 80/62 80/62 400 cfm/ton; 400 cfm/ton; 80/67 80/67 400 cfm/ton; 400 cfm/ton; 80/72 80/72 400 cfm/ton; 400 cfm/ton; 75/62 75/62 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 95 300 cfm/ton; 75/62 75/62 400 cfm/ton; 400 cfm/ton; 80/62 80/62 400 cfm/ton; 400 cfm/ton; 80/67 80/67 400 cfm/ton; 400 cfm/ton; 80/72 80/72 400 cfm/ton; 400 cfm/ton; 75/62 75/62 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 96: Smart Equipment™ Unit Control Board
SD-24 and R 24 VAC common for thermostat power Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 97 Input required for operation of 2-compressor units, not active for 1-compressor units; 3.625 EC2+ input from 10KΩ @ 77°F, Type III negative temperature VDC reading EC2+ to EC2– with open circuit. Used in suction line temperature safety. coefficient thermistor Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 98 Not effective for one stage compressor UCBs. If demand is present and permissions 24 VAC hot output for compressor 2 allow compressor 2 operation; output with compressor cooling, comfort ventilation cooling or heat pump heating demands Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 99 ENTER Button for display menu acknowledgment and navigation Button for display menu navigation and zeroing of active compressor CANCEL ASCD timer 4-way Joystick for display menu navigation Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 100 UCB is awaiting incoming FC bus communication ISO PWR Green communication board Isolated Power indicator Lit indicates the UCB is supplying power to the communication sub-board Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 101: Four-Stage Board
Input required for heat pump units, not required for A/C units; 3.625 VDC reading CC4+ to CC4– CC4+ sensor input from 10KΩ @ 77°F, Type III negative with open circuit. Used in heat pump demand defrost calculation. temperature coefficient thermistor Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 102 HPS4 trips in a two hour period cause a “High Pressure Switch 4 Lockout” and C4 output is then Pressure Switch (left pin) prevented until alarm reset. Connects through circuit trace to the right LPS4 pin. Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
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Page 103: Cable Recommendations
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 jack housing. The preassembled cables that are available from Anixter (Part No. CBL-NETWORKxxx) use 24 gauge wire. Installation Manual: YORK Sun™ Select YV28 to YV50 ®... -
Page 104: Start-Up Sheet
Start-up sheet Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems... - Page 105 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 106 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 107 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 108 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 109 Installation Manual: YORK Sun™ Select YV28 to YV50 ® Johnson Controls Ducted Systems...
- Page 110 YORK is a registered trademark of Johnson Controls. Subject to change without notice. Printed in U.S.A. Copyright © 2020 by Johnson ® Controls. All rights reserved. The Smart Equipment logo is a trademark of Johnson Controls in the United States and other countries. It is part of the Johnson Controls product portfolio.
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