Altronix ALTV244ULCB3 Installation Instructions - Manual (Page 3)

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3. All units are factory set for 24VAC operation.
For 28VAC operation adjust unit prior to applying power as follows:
Remove wires marked [24V] and [28V] from terminals marked [P] and [S]. Connect wire marked [28V] to
terminal marked [P] and connect wire marked [24V] to terminal marked [S].
Note: ALTV244ULCB set for 28VAC operation is not Class 2 Rated, not power limited.
4. Connect AC power to the black and white flying leads of the transformer (Figs. 1-5, pgs. 4-6).
Secure green lead to earth ground. Use 18 AWG or larger gauge for all power connections.
Keep power limited (PTC protected outputs only) wiring separate from non-power limited wiring.
Minimum .25” spacing must be provided. Use separate knockouts.
5. Set power switch on power distribution board marked [PD] to ON position for models ALTV244UL, ALTV244ULX
or ALTV244ULCB (Figs. 1-3, pgs. 4, 5). Set power disconnect circuit breaker to RESET (ON) position for models
ALTV244175UL or ALTV244175ULCB (Figs. 4A, 5A, pg. 6).
6. Measure output voltage before connecting devices. This helps avoid potential damage.
Terminals marked [1P - 4P] are of the same polarity.
CAUTION: Determine the maximum operating voltage of the equipment being powered before adjusting
the output voltage.
7. Set power switch on power distribution board marked [PD] to OFF position for models ALTV244UL, ALTV244ULX
or ALTV244ULCB (Figs. 1-3, pgs. 4, 5). Set power disconnect circuit breaker to OFF position for models
ALTV244175UL or ALTV244175ULCB (Figs. 4A, 5A, pg. 6).
8. Connect devices to terminals marked [1P - 1N through 4P - 4N] on PD4 or PD4CB board (Figs. 1-5, pgs. 4-6),
carefully observing polarity.
9. Set power switch on power distribution board marked [PD] to ON position for models ALTV244UL, ALTV244ULX
or ALTV244ULCB (Figs. 1-3, pgs. 4, 5). Set power disconnect circuit breaker to RESET (ON) position for models
ALTV244175UL or ALTV244175ULCB (Figs. 4A, 5A, pg. 6).
10. Green LED will illuminate when power is present.
11. Upon completion of wiring, secure enclosure door with screws (supplied). Installation of cam lock is optional.
Caution: Equipment to be installed/serviced by authorized/trained personnel only.
Shut branch circuit power before installing/servicing equipment.
WARNING: To reduce the risk of fire or electric shock, do not expose the unit to rain or moisture.
This installation should be made by qualified service personnel and should conform to all local codes
and in accordance with the National Electrical Code. Use 75˚ C or higher rated UL insulated wiring for
connecting the unit to the mains. Replace fuses with the same type and rating (refer to Four (4) Output
ALTV244UL Reference Chart, pg. 2)
Terminal Identification:
PD4 - Power Distribution Module
1P - 4P AC output.
1N - 4N AC output.
The lightning flash with arrow head symbol within an equilateral triangle is intended to alert the user to the
presence of an insulated “DANGEROUS VOLTAGE” within the products enclosure that may be of sufficient
magnitude to constitute an electric shock.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the literature accompanying the appliance.
CAUTION: To reduce the risk of electric shock do not open enclosure. There are
no user serviceable parts inside. Refer servicing to qualified service personnel.