General Information - Goodman GMVM Service Instructions Manual

PRODUCT DESIGN
Electrostatic Discharge (ESD) Precautions
NOTE: Discharge body's static electricity before touching
unit. An electrostatic discharge can adversely affect electri-
cal components.
Use the following precautions during furnace installation and
servicing to protect the integrated control module from dam-
age. By putting the furnace, the control, and the person at
the same electrostatic potential, these steps will help avoid
exposing the integrated control module to electrostatic dis-
charge. This procedure is applicable to both installed and
non-installed (ungrounded) furnaces.
1. Disconnect all power to the furnace. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body's electrostatic
charge to ground.
2. Firmly touch a clean, unpainted, metal surface of the
furnaces near the control. Any tools held in a person's
hand during grounding will be discharged.
3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e.,
do not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat step 2 before touching control or wires.
4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a furnace. Return any old or
new controls to their containers before touching any
ungrounded object.
T
O PREVENT PROPERTY DAMAGE
,
FIRE DO NOT INSTALL THIS FURNACE IN A MOBILE HOME
.
RECREATIONAL VEHICLE
Product Description
Features

General Information

The modulating furnace is part of the Goodman® brand &
Amana® brand family of communicating ready products. The
furnace may be used with conventional single or multi-stage
thermostats as well as Goodman CTK01 communicating
thermostats & CTK02** & CTK03 communicating-modulat-
ing thermostats using the ClimateTalk™ communicating pro-
tocol. Burner manifold pressure is controlled by negative air
pressure created by the draft inducer. Gas valve, pressure
switch assembly, and induced draft blower are linked to-
gether by pneumatic tubing. The furnace features a Honeywell
gas valve capable of variable gas input rates as low as 35%
and up to 100% of rated input. Indoor air is delivered by an
Emerson UltraTech® ECM motor which bases the CFM need
off of the burner input. The modulating furnace operation is
WARNING
,
PERSONAL INJURY OR DEATH DUE TO
,
TRAILER
based off of negative pressure created by the draft inducer.
The Integrated Furnace Control (IFC) receives commands
from the room thermostat. The IFC then controls the RPM of
the (3 phase) inducer by varying the frequency and voltage
to the inducer. This is known as variable frequency drive
(VFD)..
Acceptable Equipment Combinations
With CTK0* Communicating Thermostat:
1. Modulating furnace alone
2. Modulating furnace with Goodman® brand / Amana®
brand communicating split A/C or H/P unit (no sepa-
rate dual fuel control is required)
3. Modulating furnace with non-communicating 1 stage
A/C split unit (can not support a 2 stage A/C or a non-
communicating heat pump)
With Conventional Non-Communicating Thermostat
(Single or Multi-Stage)
1. Modulating furnace alone
2. Modulating furnace with Goodman / Amana communi-
cating split A/C or H/P unit (a dual fuel thermostat or
separate dual fuel control is required for H/P)
3. Modulating furnace with non-communicating split A/C
or H/P (a dual fuel thermostat or separate dual fuel
control is required for H/P)
Product Application
This furnace is primarily designed for residential home-heat-
ing applications. It is NOT designed or certified for use in
mobile homes, trailers or recreational vehicles. Neither is it
designed or certified for outdoor applications. The furnace
,
OR
MUST be installed indoors (i.e., attic space, crawl space,
or garage area provided the garage area is enclosed with an
operating door).
This furnace can be used in the following non-industrial com-
mercial applications:
Schools, Office buildings, Churches, Retail stores,
Nursing homes, Hotels/motels,
In such applications, the furnace must be installed with the
following stipulations:
• It must be installed per the installation instructions pro-
vided and per local and national codes.
• It must be installed indoors in a building constructed on
site.
• It must be part of a ducted system and not used in a free
air delivery application.
• It must not be used as a "make-up" air unit.
• It must be installed with two-pipe systems for combus-
tion air.
Common or office areas
13