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Series Y63, Y64, Y65, Y66, and Y69 Transformers Product Bulletin 1

The Series Y63, Y64, Y65, Y66, and Y69 Transformers

provide 24 VAC power for loads of 40 VA through 300

VA. These transformers are designed for use on digital

controllers, gas controls, ignition systems, motor

actuators, staging controls, and most other 24 VAC

Heating, Ventilation, Air Conditioning, and

Refrigeration (HVACR) control systems.

The Y6x Series meets the requirements of UL 1585,

UL 506, and CSA C22.2 No. 66, providing compliance

in both the United States and Canada. The Y63, Y64,

Y65, and Y66 transformers are listed as Class 2

transformers (UL 1585, CSA C22.2 No. 66). The Y69 is

listed as a general purpose transformer (UL 506, CSA

C22.2 No. 66).

Selecting a Transformer

See Table 2 to select the appropriate transformer for

your application.

Note: All conduit fittings are 1/2-14 National Pipe

Straight Threads (NPSTs). Performance and dimension

specifications are nominal and are subject to accepted

manufacturing tolerances and applications.

Figure 1: Model Y65T31-0 Transformer

Table 1: Features and Benefits

Features Benefits

Split-Bobbin Design Provides best primary/secondary isolation.

Multi-Tap Primaries Reduce stocking requirements and offers application flexibility.

Choice of Foot, Plate, or Conduit Hub

Mounting

Provides mounting flexibility.

Choice of Primary Voltages Meets a wide range of power requirements from 24 VAC through 480 VAC.

Color-Coded Lead Wires Provide simplicity and standardization.

cULus Listed or cURus Recognized Meets US and Canadian requirements for Class 2 transformers (Y63, Y64, Y65,

and Y66) and general purpose transformers (Y69).

Built-In, Easy-Reset Circuit Breakers Eliminate replacement time and cost caused by burnout (Y63, Y64, Y66, and Y69).

Open Frame Y65 Models Serve as ideal models when end bells are not required.

IMPORTANT: The new line of transformers does

not offer exact replacements for older styles. Some

dimensions and voltages have changed. The VA

rating for 100 VA transformers has changed to

92 VA to comply with UL 1585.

Series Y63, Y64, Y65, Y66, and Y69 Transformers

Product Bulletin

Code No. LIT-125755

Issued July 16, 2009

Supersedes December 17, 2002

Summary of content (6 pages)

PAGE 1
Series Y63, Y64, Y65, Y66, and Y69 Transformers Product Bulletin Code No. LIT-125755 Issued July 16, 2009 Supersedes December 17, 2002 The Series Y63, Y64, Y65, Y66, and Y69 Transformers provide 24 VAC power for loads of 40 VA through 300 VA. These transformers are designed for use on digital controllers, gas controls, ignition systems, motor actuators, staging controls, and most other 24 VAC Heating, Ventilation, Air Conditioning, and Refrigeration (HVACR) control systems.
PAGE 2
Table 2: Transformer Selection Table Code No. Primary Voltage VAC Secondary Voltage VAC Primary Connection Second Connection Mounting Agency Requirement 40 VA Capacity Transformers with Energy Limiting Type Overload Protection Y65G13-0 (Figure 2) 24 24 Male Fitting 8 in. primary leads Male Fitting 30 in. secondary leads Foot cULus Class 2 Y65A13-0 (Figure 2) 120 24 Male Fitting 8 in. primary leads Male Fitting 30 in.
PAGE 3
Dimensions 2.19 56 Note: The following dimensions are nominal and are subject to accepted manufacturing tolerances and application variables. 3.06 78 0.5 13 2.63 67 0.5 13 FIG:Y65T42_dim 2.19 56 2.66 68 1/2-14 NPS Male Fitting 2.88 73 1.34 34 1/2-14 NPS Male Fitting Figure 2: Dimensions for Y65A13 and Y65G13 Types, in./mm 2.0 51 3.69 94 0.19 Mounting 4.8 Holes (2) 3.12 79 1.2 31 0.8 20 2.25 57 FIG:Y65A21_dim 4.19 106 2.63 67 4.19 106 Figure 3: Dimensions for Y65A21 Type, in./mm 2.
PAGE 4
2.19 56 0.5 13 2.66 68 2.5 63 0.5 13 3.69 94 FIG:Y65F42_dim 1/2-14 NPS Male Fitting 2.0 51 0.19 x 0.38 Mounting 9.5 Slots (4) 4.8 Figure 8: Dimensions for Y65F42 Type, in./mm 2.5 64 0.99 25 2.0 51 1/2-14 NPS Male Fitting FIG:Y66T12_dim 3.25 83 2.63 67 Figure 12: Dimensions for Y66T12 Type, in./mm 2.53 64 2.5 64 0.5 13 4.19 106 4.19 106 3.0 76 4.19 106 Figure 9: Dimensions for Y63T22 Type, in./mm 0.5 13 3.63 92 Figure 13: Dimensions for Y66T13 Type, in./mm 2.5 63 3.25 83 1.
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2.5 64 0.5 13 4.19 106 0.99 25 3.25 83 3.41 87 2.0 51 1/2-14 NPS Male Fitting FIG:Y66F13_dim 2.0 51 0.19 x 0.38 Mounting 9.5 Slots (4) 4.8 FIG:Y64T22_dim 3.0 76 2.5 64 Figure 18: Dimensions for Y64T22 Type, in./mm Figure 15: Dimensions for Y66F13 Type, in./mm 2.5 64 5.84 148 3.75 95 1/2-14 NPS Male Fitting 4.94 125 0.5 13 0.5 13 4.78 121 0.19 x 0.38 Mounting 4.8 9.5 Slots (4) 2.63 67 1/2-14 NPS Female Fitting Figure 16: Dimensions for Y64T15 Type, in./mm 3.59 91 3.0 76 0.22 x 0.
PAGE 6
Repair Information Do not make field repairs to the transformers. For a replacement transformer, contact the nearest Johnson Controls® distributor or sales representative. Technical Specifications Series Y63, Y64, Y65, Y66, and Y69 Transformers Product Series Y63, Y64, Y65, Y66, Y69 Transformers Input Power Requirements 24–480 VAC at 60 Hz Full Load Secondary Voltage 23.5 VAC (Nominal) Open Circuit Secondary Voltage (No Load) 27.