Electrical System Installation - Nordyne E2EH-xxx HB Series Owner's Manual & Installation Instructions

1 3/4" MIN
(45 mm)
(80 mm)
(20 mm)
Figure 19. Upflow Floor Cutout Locations (nominal dimensions)
5. Position furnace onto coil cabinet and se-
cure with two or more fasteners.
6. Use optional upflow duct connector or field
supplied connector to attach furnace to
overhead supply duct (see Figure 17).
ELECTRICAL SYSTEM
INSTALLATION
WARNING:
!
To avoid the risk of electrical shock,
personal injury or death, disconnect
all electrical power to the unit before
performing any maintenance or
service. The unit may have more than
one electrical power supply.
Codes, Specifications, and
Requirements
The wiring, installation, and electrical hookup of
this furnace must comply with the National
Electrical Code (or the Canadian Electrical
Code) and all regulations of local authorities
having jurisdiction. See Table 6a & 6b for mini-
mum circuit ampacity, maximum over-current
protection, and recommended wire size. See
REAR WALL OF ENCLOSURE
CENTER LINE
17 1/2"
18 5/8"
(445 mm)
(474 mm)
23 3/4"
(604 mm)
3 1/8"
3/4"
5 3/4"
(147 mm)
Furnace
Outer Door
Furnace
Outline
14"
(356 mm)
For Optional
A/C Or H/P
3"
(73 mm)
20"
(508 mm)
the unit wiring diagram for other wiring details.
Supply-circuit requirements are as follows:
• -010 model is factory-wired for single-branch
supply circuit only.
• -012 models are factory-wired for single-
branch supply circuit (single-circuit kit in-
stalled). Dual-branch circuit can be used by
removing factory-installed single-circuit kit
(see Figures 20 and 21).
• -015, -017, -020 and -023 models are
factory-wired for dual-branch supply circuit.
Single-branch circuit can be used by
installing optional single-circuit kit .
! IMPORTANT:
Note: Circuit breakers installed within
t h i s u n i t a r e f o r s h o r t - c i r c u i t
protection of the internal wiring and
to serve as a disconnect. Circuit
breakers installed within this unit DO
NOT provide over-current protection
of the supply wiring and therefore may
be sized larger than the branch circuit
protection.
17