Bryant 351DAS User Manual

DIRECT-VENT DOWNFLOW CONDENSING GAS FURNACE for MANUFACTURED HOUSING

351DAS

Size 080

Series A

Utilizing the extensive resources available to Bryant, a new standard of excellence has been achieved with the model 351DAS Downflow Furnace for manufactured (mobile) or modular homes.

The model 351DAS is a unique downflow condensing furnace with features like no other product in its class. The 351DAS builds on the many Bryant successes in the furnace industry and establishes a new standard for high-efficiency gas furnaces.

FEATURES

Factory Configuration —Factory configured for downflow ap-

plications in manufactured (mobile) or modular homes. The model 351DAS is available in 3 heat/airflow combina-

tions.

Sealed Combustion (Direct-Vent) System —Enclosed burner

assembly isolates operating noise without the expense of sound deadening devices. The sealed combustion (directvent) system brings outdoor air directly into the combustion chamber, reducing infiltration of cold air into the structure and reducing heat loss.

3-Pass Primary Heat Exchangers —This design accelerates

heat transfer and extracts heat that conventional heat exchangers waste up the flue. The weld-free primary heat exchangers are made of aluminized steel for corrosion resistance.

Flow-Through Secondary Heat Exchangers —Each cell is lami-

nated with our patented Everlastic resistance to corrosion. This breakthrough in heating technology helps extend the life of the furnace for years of trouble-free performance.

Warranty —Limited 20-year Warranty on the heat exchangers

for the original owner in single family residence. Contact your dealer for details. Two-year limited parts and labor warranty on entire unit.

Monoport Inshot Burners —Produce precise air-to-gas mixture

which gives a clean burn. The large monoport on the inshot or injection-type burners seldom, if ever, needs cleaning.

Control Center —The printed-circuit board and all internal wiring

are factory installed. Convenient terminals permit quick-connection of a thermostat, a humidifier, an air cleaner, and air conditioning control circuits.

As an added feature, the control has a built-in status indicator and self-test feature. The status indicator flashes to indicate a problem condition and assists the servicer in diagnosis. The selftest feature allows for a complete check of the major components in only seconds.

Combustion Air and Ventilation —The 351DAS advanced design

allows Schedule 40PVC, PVC-DWV, SDR-21 PVC, SDR-26 PVC (not approved in Canada), ABS-DWV, or ABS-F628 Schedule 40 pipe to bring outdoor air into the furnace for combustion. The extracted heat lowers the temperature of the combustion products to a point (typically below 115°F) that any of the approved types of pipe can also be used for venting combustion products outside the structure. The combustion-air and vent pipes can terminate through a side wall or through the roof when using 1 of our approved vent termination kits.

Fully-Insulated Casing —Foil-faced insulation in the heat ex-

changer section cuts heat loss, and insulation in the blower section reduces noise levels. The casing also has the required openings for left- or right-side connection of gas, electric, drain, and vent connections.

Certifications —The 351DAS units are A.G.A. and C.G.A. design

certified for use with natural and propane gases, as well as GAMA efficiency rating certified. The furnace is factory-shipped for use with natural and propane gases. (All parts necessary to convert the gas valve for propane gas use are shipped with the furnace.) Model 351DAS is design certified for installation in manufactured (mobile) homes.

Quality Registration —The 351DAS is engineered and manu-

factured under an ISO 9001 registered quality system.

polypropylene for greater

Form No. PDS 351D.80.1

⁄

-IN. DIA

⁄

-IN. DIA

⁄

ACCESSORY

POWER ENTRY

⁄

TYP

⁄

TYP

⁄

-IN. DIA

⁄

GAS CONN

2-IN. VENT CONN

THERMOSTAT ENTRY

-IN. DIA

⁄

POWER CONN

TYP

⁄

TYP

⁄

2-IN.

COMBUSTION

-AIR CONN

⁄

TRAP LOCATION

CONDENSATE DRAIN

OUTLET FLANGE

AS SHIPPED

(REMOVE IN FIELD)

A98647

in. rectangle.

X 19-

X 23-

X 12-in. rectangle.

⁄

INLET

⁄

-IN. DIA GAS CONN

⁄

CONDENSATE DRAIN

TRAP LOCATION

OR ALTERNATE

OUTLET

AIRFLOW

DIMENSIONS (In.)

 2. For 1200 CFM 20-in. round or 14-

NOTES: Minimum return-air opening at furnace, based on metal

 duct. If flex duct is used, see flex duct manufacturer's

 3. For 1600 CFM 22-in. round or 14-

 recommendation for equivalent diameters:

 1. For 800 CFM 16-in. round or 14-

036080 17-1/2 15-7/8 16 172

048080 17-1/2 15-7/8 16 175

UNIT SIZE A D E SHIP. WEIGHT (Lb)

060080 21 19-3/8 19-1/2 197

⁄

19"

OUTLET

⁄

-IN. DIA

⁄

-IN. DIA

⁄

2-IN. VENT CONN

THERMOSTAT ENTRY

POWER CONN

2-IN.

-IN. DIA

⁄

GAS CONN

AIR CONN

COMBUSTION-

⁄

—2—

INSTALLATION

This forced air furnace is equipped for use with natural or propane gas at altitudes 0 - 10,000 ft (0 - 3,050m). This furnace is for indoor installation in a manufactured (mobile) or modular home. This furnace may be installed on combustible flooring in alcove or closet at minimum clearance from combustible material. This appliance requires a special venting system. Refer to the installation instructions for parts list and method of installation. This furnace is for use with schedule-40 PVC, PVC-DWV, or ABS-DWV pipe, and must not be vented in common with other gas-fired appliances. Construction through which vent/air intake pipes may be installed is maximum 24 inches (600 mm), minimum 3/4 inches (19 mm) thickness (including roofing materials).

Furnace must be installed level, or pitched forward within 1/2 inch of level for proper drainage. Failure w ill result in equipment or property damage.

MINIMUM INCHES CLEARANCE TO

COMBUSTIBLE CONSTRUCTION

DOWNFLO W POS ITION:

Mimimum front clearance for service 30 inches (762mm).

For installation on combustible floors only when installed on special base No. KGASB0201ALL,

†

Coil Assembly, Part No. CD5 or CK5, or Coil Casin g , Part No. KCAKC .

MANUFACTURED MOBILE HOME STANDARDS

This furnace must be installed in accordance with the manufacturer's instructions and Manufactured Home Construction and Safety Standard, Title 24 CFR, Part 3280 or, when such standard is not applicable, the ANSI A225.1, Standard for Manufactured Home Installation (Manufactured Home Sites, Communities and Set-Ups), or the Mobile Homes Standard CAN/CSA-Z240 MH Series-M86.

This furnace must be installed with a direct vent (combustion air and flue) system, and use a factory accessory termination kit.

This furnace is approved for DOWNF LOW installation.

Clearance in inches

LEVEL (0") 1/2" MAX

DOWNFLOW

FRONT

TOP/PLENUM

BOTTOM

0" †

MIN

Condensate Trap

on LEFT Side

COLLECTOR BOX

DRAIN TUBE

CONDENSATE TRAP

INDUCER HOUSING

DRAIN TUBE

BURNER ENCLOSURE

PRESSURE REFERENCE

TUBE ASSEMBLY

NOTE:

CONTROLS—THERMOSTATS AND ZONING

THERMOSTAT—NON-PROGRAMMABLE

THERMOSTAT—PROGRAMMABLE

THERMIDISTAT—PROGRAMMABLE THERMOSTAT

—with Humidity Control

TUBE ROUTING

BURNER ENCLOSURE

PRESSURE

REFERENCE TUBE

ASSEMBLY

CAP / PLUG

LOWER CO LLECTOR

BOX PRESSURE TUBE UPPER COLLECTOR

BOX PRESSURE TUBE

GAS VALVE

1. All tubing must be connected securely and routed to avoid kinks and traps.

COLLECTOR BOX

DRAIN TUBE

INDUCER HOUSING

DRAIN TUBE

COUPLING

For Use with 1-Speed Air Conditioner—TSTATBBNAC01-B For Use with 2-Speed Air Conditioner—TSTATBBN2S01-B

For Use with 2-Speed Heat Pump—TSTATBBN2S01-B

For Use with 1-Speed Air Conditioner—TSTATBBPAC01-B

For Use with 2-Speed Air Conditioner—TSTATBBP2S01-B

For Use with 2-Speed Heat Pump—TSTATBBP2S01-B or TSTATBBPDF01-B

For Use with 1-Speed Heat Pump—TSTATBBPDF01-B

TSTATBBPRH01-B

Condensate Trap

on RIGHT Side

CAP / PLUG

LOWER CO LLECTOR BOX

PRESSURE TUBE

UPPER COLLECTOR BOX

PRESSURE TUBE

GAS VALVE

COLLECTOR BOX EXTENSION DRAIN

TUBE

DRAIN TUBES ROUTED IN

FRONT OF GAS VALVE

CONDENSATE TRAP

324997-201 REV. A / LIT

A99001e

—3—

+ 5 hidden pages