Bryant Bruant 4 Way Gas 355AAV - Manual (Page 7)

7
18-IN. (457.2 mm)
MINIMUM TO BURNERS
A93044
Fig. 5 -- Installation in a Garage
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.
Step 7 — 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.
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
!
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 YOUR BODY’S ELECTROSTATIC
CHARGE TO GROUND.
2. 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.
3. 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.)
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before
touching control or wires.
5. Use this procedure for installed and uninstalled
(ungrounded) furnaces.
6. 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.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
INTRODUCTION
The model 355AAV 4--way multipoise, Gas--Fired, Category IV,
direct vent and non--direct vent condensing furnace is available in
model sizes ranging in input capacities of 40,000 to 120,000 Btuh.
APPLICATIONS
Step 1 — General
Some assembly and modifications are required for furnaces
installed in any of the 4 applications shown in Fig. 1. All drain and
pressure tubes are connected as shown in Fig. 7. See appropriate
application instructions for these procedures.
MINOR PROPERTY DAMAGE
Failure to follow this caution may result in minor property
damage.
Local codes may require a drain pan under entire furnace and
condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
CAUTION
!
NOTE: In Canada, installations shall be in accordance with
current NSCNGPIC and/or local codes.
Step 2 — Upflow Applications
An upflow furnace application is where furnace blower is located
below combustion and controls section of furnace, and conditioned
air is discharged upwards.
Condensate Trap Tubing (Factory--Shipped Orienta-
tion)
The condensate trap is factory installed in the blower shelf and
factory connected for UPFLOW applications. A factory--supplied
tube is used to extend the condensate trap drain connection to the
desired furnace side for field drain attachment. See Condensate
Trap Tubing (Factory--Shipped Orientation) section for drain tube
extension details. (See Fig. 7.)
NOTE: See Fig. 7 or tube routing label on main furnace door to
confirm location of these tubes.
1. Collector Box Drain, Inducer Housing Drain, Relief Port,
and Pressure Switch Tubes These tubes should be factory
attached to condensate trap and pressure switch ready for
use in UPFLOW applications. These tubes can be identified
by their connection location and also by a color label on
each tube. These tubes are identified as follows: collector
box drain tube (blue label), inducer housing drain tube
(violet label or molded), relief port tube (green label), and
pressure switch tube (pink label).
2. Condensate Trap Drain Tube
The condensate trap drain connection must be extended for
field attachment by doing the following:
a. Determine location of field drain connection. (See Fig. 2
or 7.)
NOTE: If internal filter or side filter/media cabinet is used, drain
tube should be located to opposite side of casing from return duct
attachment to assist in filter removal.
355A