Goodman GPG 16 M Series, Руководство по установке

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For unit protection, use a fuse or hacr circuit breaker that is
in excess of the circuit ampacity, but less than or equal to the
maximum overcurrent protection device. DO NOT EXCEED
THE MAXIMUM OVERCURRENT DEVICE SIZE SHOWN
ON UNIT DATA PLATE.
All line voltage connections must be made through weath-
erproof fittings. All exterior power supply and ground wiring
must be in approved weatherproof conduit. Low voltage wir-
ing from the unit control panel to the thermostat requires
coded cable. See below for ground level and rooftop wiring.
CIRCULATING AIR AND FILTERS
Airflow Conversion
Units can easily be converted from horizontal to down-dis-
charge airflow delivery. In down-discharge or high static in -
stallations, the installer should measure the total external
static and review the blower performance charts before per-
forming the installation. In some installations it will be neces-
sary to change the blower speed to provide proper air flow.
Horizontal Air Flow
Single phase models are shipped without horizontal duct
covers. If needed, these kits may be ordered through Good-
man’s Service Parts department.
Duct Cover Installation
Down Discharge Applications
Cut insulation around bottom openings and remove panels
from the bottom of the unit, saving the screws holding the
panels in place.
NOTE : Single phase models require installation of hori-
zontal duct kit #20464501PDGK (medium chassis) and
#20464502PDGK (large chassis). See “Unit Dimensions”
section for chassis sizes.
Ductwork
Duct systems and register sizes must be properly designed
for the C.F.M. and external static pressure rating of the unit.
Ductwork should be designed in accordance with the recom-
mended methods of Air Conditioning Contractors of Ameri-
ca Manual D (Residential) or Manual Q (Commercial). All
ductwork exposed to the outdoors must include a weather-
proof barrier and adequate insulation.
A duct system should be installed in accordance with Stan-
dards of the National Board of Fire Underwriters for the In-
stallation of Air Conditioning, Warm Air Heating and Ventilat-
ing Systems. Pamphlets No. 90A and 90B.
The supply duct from the unit through a wall may be installed
without clearance. However, minimum unit clearances as
shown in the appendix must be maintained. The supply duct
should be provided with an access panel large enough to
inspect the air chamber downstream of the heat exchanger.
A cover should be tightly attached to prevent air leaks.
For duct flange dimensions on the unit refer to the Unit Di -
mension illustration in the appendix.
For down-discharge applications, the ductwork should be
attached to the roof curb prior to installing the unit. Ductwork
dimensions are shown in the roof curb installation manual.
If desired, supply and return duct connections to the unit
may be made with flexible connections to reduce possible
unit operating sound transmission.
Filters
Even though a return air filter is not supplied with this unit,
there must be a means of filtering all return air. All units may
be externally filtered.
Refer to the unit filter size chart in the appendix for filter size
information.
Filters installed external to the unit should be sized in accor-
dance with their manufacturer recommendations. A throw-
away filter must be sized for a maximum face velocity of 300
feet per minute.
Filter Installation
IMPORTANT NOTE: When installing a filter, the air flow ar -
rows on the filter must point toward the circulator blower.
Venting
NOTE: Venting is self-contained. Do not modify or block.
Installation - Flue Hood Exhaust
1. Locate the flue hood assembly box in the unit.
2. Slide screen over flanges on the lower flue hood.
3. Slide screen and lower flue hood into hood.