Axiom PRO-GUARD, Руководство по эксплуатации и техническому обслуживанию

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4
E
N
G
L
I
S
H
Installation
Instructions
(Continued)
NOTE: For certain applications, conduit
may be required (see Figure 6). Check
local electrical codes. If you run the
wiring in conduit and wish to be able
to turn the heater be sure to purchase
enough flexible conduit to allow the
heater to be turned.
3. Connect the wire to the power block
located in the base of the heater
(see Figure 7).
NOTE: Unit is 240/208 volts. When
wiring a two conductor cable with
ground, the white wire must be marked
black by adding a piece of black
electrical tape to the wire near
the point of connection.
NOTE: To decrease the heat output
of the heating unit, see Table 1 and
Figure 9.
4. Turn on the power at the main
service panel.
Dayton
®
Electric Utility Heaters
3UG73E and 3UG74E
Dayton Operating Instructions and Parts Manual
Figure 8 – Adjustable Louvers
L1
L2
Figure 7
BLK
1
2
3
4
5
6
ELEMENT
HI
LIMIT
FAN
CONT.
7
8
9
10
11
12
C D A B
WATTAGE CHANGE
TERMINAL BOARD
GROUND
THERMOSTAT
L1 L2
POWER
TERMINAL
BLOCK
FIELD
WIRING
FAN
ALARM LIGHT
MOTOR
RD
YL
BLU
Figure 9 – Wiring Diagram
WIRING
208/240V - 3UG73E
208V - 3UG74E
NOTE:
1. Do not move blue wire at L1.
(Table 1 refers to blue wire
at terminal T.)
2. It is recommended that
#10 AWG wire be used in
all installations to provide for
possible future reconnection
at the higher wattage. Refer
to NEC (National Electrical
Code) for maximum run
length to minimize voltage
drop to 3% max. Circuit runs
exceeding 100 ft. may require
larger conductor size).
3. Wires #2, #3, & #4 should be
routed through indicated
element jumper wire
eliminating use of wire tie.
Green (or
Bare Copper)
Bottom
View
Power
Terminal Block
Black
White
3UG73E 17065 240 5000 30 20.9 None
14215 240 4165 25 17.4 Blue
11365 240 3332 20 13.9 Blue & Yellow
8533 240 2500 15 10.4 Blue, Yellow & Red
12799 208 3750 25 18.0 None
10659 208 3123 20 15.0 Blue
8533 208 2500 15 12.0 Blue & Yellow
6393 208 1874 15 9.0 Blue, Yellow & Red
3UG74E 17065 208 5000 30 24.0 None
14215 208 4165 25 20.0 Blue
11365 208 3332 20 16.0 Blue & Yellow
8533 208 2500 15 12.0 Blue, Yellow & Red
Table 1 – Heat Output Adjustments
Max Heater Move Jumpers
Model BTU/Hr. Volts Watts Fuse Size Amps from C-D to A-B