ALTV248220 Series Installation Guide
- 3 -
Installation Instructions:
1. Mount unit in the desired location. Mark and predrill holes in the wall to line up with the top two keyholes
in theenclosure. Install two upper fasteners and screws in the wall with the screw heads protruding. Place
the enclosure’s upper keyholes over the two upper screws, level and secure. Mark the position of the lower
two holes. Remove the enclosure. Drill the lower holes and install three fasteners. Place the enclosure’s
upper keyholes over the two upper screws. Install the two lower screws and make sure to tighten all screws
(Enclosure Dimensions, pg. 9-12)
. Secure enclosure to earth ground.
2. Slide switch on PD board to the OFF position for models ALTV248220 and ALTV248CB220
(Fig. 1, pg. 4)
.
Turn OFF main switch on all other models,
(Figs. 2-5, pgs. 5-8).
3. All units are factory set for 24VAC operation.
For 28VAC operation adjust unit prior to mounting and applying power as follows:
Change the wire position so that the black wire [28V] is connected to the terminal marked [P] and the
yellow wire [24V] is connected to the terminal marked [S]
.
4. Connect unswitched AC circuit (220VAC, 50/60Hz) as follows: Green branch wire (ground) connects to
the terminal marked , Line connects to the terminal marked [L], and Neutral connects to the terminal
marked [N] of the Inlet Appliance Connector.
(Figs. 1-5, pgs. 4-8)
.
Use 18 AWG or larger for all power connections.
5. Slide switch SW1 to the ON position on models ALTV248220 and ALTV248CB220
(Fig. 1, pg. 4)
.
Turn main switch on all other models to the “RESET” (ON) position
(Figs. 2, 3, pgs. 5, 6)
.
6. Measure output voltage before connecting devices. This helps avoiding potential damage.
Terminals marked [1P - 8P] are positive of the same polarity.
CAUTION: Determine the maximum operating voltage of the equipment being powered before
adjusting the output voltage.
7. Slide switch on PD board to the OFF position for models ALTV248220 and ALTV248CB220
(Fig. 1, pg. 4)
.
Turn OFF main switch on all other models,
(Figs. 2-5, pgs. 5-8).
8.
Connect devices to the terminals marked [1P - 1N] through [4P - 4N] on PD4/PD4CB board
(Fig. 5, pg. 8)
or terminals marked [1P - 1N] through [8P - 8N] on PD8/PD8CB board
(Figs. 1-4, pgs. 4-7),
carefully observing polarity.
9. Slide switch on PD board to the ON position for models ALTV248220 and ALTV248CB220
(Fig. 1, pg. 4)
.
Turn main switch on all other models to the “RESET” (ON) position
(Figs. 2-5, pgs. 5-8).
10. Green LED will illuminate when unit is powered.
11. Upon completion of wiring, secure enclosure door with screws (supplied).
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 the National
Electrical Code and all local codes.
Terminal Identification:
PD4/PD4CB - Distribution Module
1P - 4P
AC output.
1N - 4N
AC output.
PD8/PD8CB - Distribution Module
1P - 8P
AC output.
1N - 8N
AC output.
Input
220VAC
50/60Hz,
0.5A
1A
250V
PTC
used on
ALTV248CB220
INPUT
MAIN FUSE
FUSED POWER OUTPUTS
COMMON POWER OUTPUTS
N
P
PD8
ON OFF
1 2 3 4 5 6 7 8
N P S
