Minimum Clearances To Combustible Materials - Carrier 59MN7B Installation, Start-Up, Operating And Service And Maintenance Instructions

1. 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
ELECTROSTATIC CHARGE TO GROUND.
2. Firmly touch the clean, unpainted, metal surface of the fur-
nace chassis which is close to the control. Tools held in a
person's hand during grounding will be satisfactorily dis-
charged.
3. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing to
recharge your body with static electricity (for example; DO
NOT move or shuffle your feet, do not touch ungrounded
objects, etc.).
4. If you touch ungrounded objects (and recharge your body
with static electricity), firmly touch a clean, unpainted metal
surface of the furnace again before touching control or
wires.
5. Use this procedure for installed and uninstalled (ungroun-
ded) furnaces.
6. Before removing a new control from its container, dis-
charge 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 4 before bringing the
control or yourself in contact with the furnace. Put all used
and new controls into containers before touching ungroun-
ded objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
ACCESSORIES
See Product Data Sheet for a list of accessories for this product.
Table 1 – Loose Parts Bag
DESCRIPTION
Air Intake Pipe Flange
Vent Pipe Flange
Coupling Flange Gaskets
Sharp Tip Screws (Vent and Inlet Flanges)
Vent Pipe Coupling
Vent Pipe Coupling Clamps
Rubber Drain Elbow
Drain Tube Clamps
1/2---in. CPVC to 3/4---in. PVC Pipe Adapter
Gas Line Grommet
Junction Box Cover
Junction Box Base
Green Ground Screw
Blunt Tip Screws (Junction Box)
Thermostat Wire Grommet
Drain Extension Tube (Z---pipe) (Provided separ-
ately in furnace)
Table 2 – Minimum Clearances to Combustible Materials for
All Units
POSITION
Rear
Front (Combustion air open-
ings in furnace and in struc-
ture)
Required for service
All Sides of Supply Plenum
Sides
Vent
Top of Furnace
* Consult local building codes.
YOUR BODY'S
QUANTITY
1
1
2
10
1
2
1
4
1
1
1
1
1
3
1
1
CLEARANCE
0 (0 mm)
1 in. (25 mm)
*24 in. (610 mm)
*1 in. (25 mm)
0 (0 mm)
0 (0 mm)
1 in. (25 mm)
6
LOCATION
CAUTION
!
PERSONAL INJURY AND/OR PROPERTY
DAMAGE HAZARD
Improper use or installation of this furnace may result in
premature furnace component failure. Unless otherwise
prohibited, this gas furnace may be used for heating
buildings under construction provided that:
- -The furnace is permanently installed with all electrical
wiring, piping, venting and ducting installed according to
these installation instructions. A return air duct is provided,
sealed to the furnace casing, and terminated outside the
space containing the furnace. This prevents a negative
pressure condition as created by the circulating air blower,
causing a flame rollout and/or drawing combustion
products into the structure.
- -The furnace is controlled by a thermostat. It may not be
"hot wired" to provide heat continuously to the structure
without thermostatic control.
- -Clean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and
other construction materials.
entrainment of drywall dust into combustion air, which can
cause fouling and plugging of furnace components.
- -The temperature of the return air to the furnace is
maintained between 55_F (13_C) and 80_F (27_C), with
no evening setback or shutdown. The use of the furnace
while the structure is under construction is deemed to be
intermittent operation per our installation instructions.
- -The air temperature rise is within the rated rise range on
the furnace rating plate, and the gas input rate has been set
to the nameplate value.
- -The filters used to clean the circulating air during the
construction process must be either changed or thoroughly
cleaned prior to occupancy.
- -The furnace, ductwork and filters are cleaned as necessary
to remove drywall dust and construction debris from all
HVAC system components after construction is completed.
- -Verify proper furnace operating conditions including
ignition, gas input rate, air temperature rise, and venting
according to these installation instructions.
General
These furnaces are shipped with materials to assist in proper
furnace installation. These materials are shipped in the main
blower compartment. See Table 1 for loose parts bag contents.
This furnace must:
S be installed so the electrical components are protected from
water.
S not be installed directly on any combustible material other than
wood flooring (refer to SAFETY CONSIDERATIONS).
S be located close to the chimney or vent and attached to an air
distribution system. Refer to Air Ducts section.
S be provided ample space for servicing and cleaning. Always
comply with minimum fire protection clearances shown in
Table 2 or on the furnace clearance to combustible construction
label.
It also prevents the