7
The furnace shall be installed so that the electrical components are
protected from water.
For accessory installation details, refer to applicable installation
literature.
CODES AND STANDARDS
Follow all national and local codes and standards in addition
to these instructions.
The installation must comply with
regulations of the serving gas supplier, local building, heating,
plumbing, and other codes. In absence of local codes, the
installation must comply with the national codes listed below and
all authorities having jurisdiction in Canada.
In the United States and Canada, follow all codes and standards for
the following:
Safety
S
US: National Fuel Gas Code (NFGC) NFPA 54--2006/ANSI
Z223.1--2006 and the Installation Standards, Warm Air Heating
and Air Conditioning Systems ANSI/NFPA 90B
S
CANADA: National Standard of Canada, Natural Gas and
Propane Installation Code (CAN/CSA--B149.1--05) CSA
B149.1--05
General Installation
S
US: NFGC and the NFPA 90B. For copies, contact the National
Fire Protection Association Inc., Batterymarch Park, Quincy,
MA 02269; or for only the NFGC contact the American Gas
Association, 400 N. Capitol, N.W., Washington DC 20001.
S
A manufactured (Mobile) home installation must conform with
the
Manufactured Home Construction and Safety Standard, Title
24 CFR, Part 3280,
or when this standard is not applicable, the
Standard for
Manufactured Home Installation (Manufactured
Home Suites, Communities, and Set--Ups), ANSI/NCS A225.1,
and/or CAN/CSA--z240, MH Series Mobile Homes.
S
CANADA: CAN/CSA--B149.1--05. For a copy, contact
Standard Sales, CSA International, 178 Rexdale Boulevard,
Etobicoke (Toronto), Ontario, M9W 1R3, Canada.
Combustion and Ventilation Air
S
US: Section 9.3 NFPA 54/ANSI Z223.1--2006, Air for
Combustion and Ventilation.
S
CANADA: Part 8 of the CAN/CSA--B149.1--05, Venting
Systems and Air Supply for Appliances.
Duct Systems
S
US and CANADA: Air Conditioning Contractors Association
(ACCA) Manual D, Sheet Metal and Air Conditioning
Contractors National Association (SMACNA), or American
Society of Heating, Refrigeration, and Air Conditioning
Engineers (ASHRAE) 2005 Fundamentals Handbook Chapter
35.
Acoustical Lining and Fibrous Glass Duct
S
US and CANADA: current edition of SMACNA, NFPA 90B as
tested by UL Standard 181 for Class I Rigid Air Ducts.
Gas Piping and Gas Pipe Pressure Testing
S
US: Section 9.3 NFPA 54/ANSI Z223.1--2006 NFGC; chapters
5, 6, 7, and 8 and national plumbing codes.
S
CANADA: CAN/CSA--B149.1--05 Parts 4, 5, 6, and 9.
In the state of Massachusetts:
S
This product must be installed by a licensed plumber or gas
fitter.
S
When flexible connectors are used, the maximum length shall
not exceed 36 inches (914 mm).
S
When lever type gas shutoffs are used they shall be T--handle
type.
S
The use of copper tubing for gas piping is not approved by the
state of Massachusetts.
Electrical Connections
S
US: National Electrical Code (NEC) ANSI/NFPA 70--2008.
S
CANADA: Canadian Electrical Code CSA C22.1.
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage to unit
components.
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing
to protect the furnace electronic control. Precautions will
prevent electrostatic discharges from personnel and hand
tools which are held during the procedure. These
precautions will help to avoid exposing the control to
electrostatic discharge by putting the furnace, the control,
and the person at the same electrostatic potential.
CAUTION
!
3. Disconnect all power to the furnace. Multiple disconnects
may be required. DO NOT TOUCH THE CONTROL OR
ANY WIRE CONNECTED TO THE CONTROL PRIOR
TO DISCHARGING YOUR BODY’S ELECTROSTATIC
CHARGE TO GROUND.
4. Firmly touch a clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in a
person’s hand during grounding will be satisfactorily
discharged.
5. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing that
recharges your body with static electricity (for example; DO
NOT move or shuffle your feet, DO NOT touch
ungrounded objects, etc.).
6. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before
touching control or wires.
7. Use this procedure for installed and uninstalled
(ungrounded) furnaces.
8. Before removing a new control from its container, discharge
your body’s electrostatic charge to ground to protect the
control from damage. If the control is to be installed in a
furnace, follow items 1 through 5 before bringing the
control or yourself into contact with the furnace. Put all
used AND new controls into containers before touching
ungrounded objects.
9. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
INTRODUCTION
The model 58MVC Direct Vent, Upflow, Gas--Fired, Category IV,
condensing furnace is available in model sizes ranging in input
capacities of 60,000 to 120,000 Btuh.
APPLICATIONS
General
Some assembly and modifications are required for furnaces
installed in any of the four applications shown in Fig. 1. All drain
58MV
C