4
Electrical Requirements
NOTES:
■
Use copper conductors only.
■
All field wiring must be done in accordance with National
Electrical Code, applicable requirements of UL and local
codes where applicable.
■
Electrical wiring, disconnect means and overcurrent
protection are to be supplied by the installer. Refer to the air
handler rating plate for maximum overcurrent protection,
minimum circuit ampacity, as well as operating voltage.
■
The power supply must be sized and protected according to
the specifications supplied on the product.
■
This air handler is factory-configured for 240-volt, single
phase, 60 cycles. For 208-volt applications, see “208-Volt
Conversion” in the “Make Electrical Connections” section.
■
For optional electric heater applications, see “Accessories.”
Refer to the instructions provided with the accessory for
proper installation.
Ductwork Requirements
■
Install the conditioned air plenum, ducts and air filters (not
provided) in accordance with NFPA 90B Standard for the
Installation of Warm Air Heating and Air-Conditioning
Systems (latest edition).
■
The air handler is provided with flanges for the connection of
the plenum and ducts.
■
The air handler is equipped with flanges that can form a filter
rack for the installation of the air filter, or the filter may be
installed as part of the return air duct system.
■
Air filters must be listed as Class 2 furnace air filters.
■
Supply and return ductwork must be adequately sized to
meet the system’s air requirements and static pressure
capabilities. To ensure correct system performance, the
ductwork is to be sized to accommodate 375 to 425 CFM per
ton of cooling with the static pressure not to exceed 0.5"
W.C. Ductwork should be insulated with a minimum of 1"
(2.5 cm) thick insulation with a vapor barrier in conditioned
areas or 2" (5.1 cm) minimum in unconditioned areas.
■
Supply plenum should be the same size as the flanged
opening provided around the blower outlet and should
extend ideally at least 36" (91.4 cm) from the air handler
before turning or branching off plenum into duct runs. The
plenum forms an extension of the blower housing and
minimizes air expansion losses from the blower.
INSTALLATION INSTRUCTIONS
Inspect Shipment
These air handlers are completely factory assembled, and all
components are performance tested. Each air handler consists of
a blower assembly, refrigerant coil, and controls, in an insulated
galvanized steel factory finished enclosure. Knockouts are
provided for electrical wiring entrance.
■
Check the air handler rating plate to confirm specifications
are as ordered.
■
Upon receipt of air handler, thoroughly inspect it for possible
shipping damage. Closely examine the air handler inside the
carton if the carton is damaged.
■
If damage is found, it should be noted on the carrier’s freight
bill. Damage claims should be filed with the carrier
immediately. Claims of shortages should be filed with the
seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the air handler because your claim may be denied.
Return Air Filters
Each installation must include a return air filter. This filtering may
be performed at the air handler or externally such as a return air
filter grille. Air handlers mounted in the downflow orientation,
including “B” series, require external filtering. A washable filter is
available as an accessory. To ensure optimum performance,
frequent filter cleaning is advised.
Goodman 31
WARNING
To avoid the risk of injury, electrical shock or death, the
furnace must be electrically grounded in accordance with
local codes or, in their absence, with the latest edition of the
National Electric Code (NEC).
Goodman 39
Do not operate this product without all the ductwork
attached.
CAUTION
WVAHM
WAHMS
WAHME
Filter
Number
Quantity
Required
1729
1824
N/A
FIL 18-32
1
3030
1931
3636
1830
FIL 36-42
1
3642
3743
4860
3036
3137
4260
FIL 48-61
1
