Installation Instructions

T2428100
Open Frame Transformer
Specification Chart:
Model # Input (Primary) Output (Secondary) Agency Listing
T2428100 115VAC, 50/60Hz, 1A 24VAC/100VA (4A) or 28VAC/100VA (3.5A)
Installation Instructions:
1. Mount transformer in the desired location/enclosure (refer to Transformer Dimensions below).
2. Connect AC power 115VAC, 50/60Hz to primary leads (black and white) (refer to Wiring Configuration below).
3. Measure output voltage across the secondary leads before connecting devices (refer to Wiring Configuration below).
This helps avoiding potential damage.
- Yellow and Brown for 24VAC (open circuit voltage @ 115VAC approx. 26.1VAC).
- Black and Brown for 28VAC (open circuit voltage @ 115VAC approx. 30.4VAC).
4. Connect 24VAC device(s) to Yellow and Brown leads or 28VAC device(s) to Black and Brown leads
(refer to Wiring Configuration below).
WARNING: This installation should be made by qualified service personnel and should conform to the National
Electrical Code and all local codes.
Wiring Configuration:
Transformer Dimensions:
Model # A B C D E F Approx. Shipping Weight:
T2428100
3.08”
78.23mm
2.58”
65.53mm
2.21”
56.13mm
1.35”
34.29mm
4.03”
102.36mm
3.57”
90.68mm
3.55 lbs (1.61kg)
SECONDARY
PRIMARY
28VAC
(Black)
Black
Lead
White
Lead
115VAC, 60Hz Input
24VAC
(Yellow)
Com
(Brown)
F
A
B
Secondary
Leads
D
C
E
Primary
Leads
Altronix is not responsible for any typographical errors. Product specifications are subject to change without notice.
140 58th Street, Brooklyn, New York 11220 USA, 718-567-8181, fax: [phone]
website: www.altronix.com, e-mail: [e-mail].
IIT2428100 - Rev. 051612 B16P
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