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Step 4 — Venting

Venting of furnace should be to the outside and in accordance with

local codes or requirements of local utility.
OIL--FIRED APPLIANCES SHALL BE CONNECTED TO

FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO
ENSURE SAFE AND PROPER OPERATION OF APPLIANCE.
For additional venting information, refer to ANSI/NFPA 211
Chimney, Fireplaces, Vents, and Solid Fuel Burning Appliances

and/or CSA B139 Installation Code.
This furnace is certified for use with Type “L” vent (maximum flue
gas temperature 575

_

F/302

_

C).

Vent System Inspection

Before furnace is installed, it is highly recommended that any

existing vent system be completely inspected.

CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in personal injury

or death.
The following steps shall be followed for each appliance

connected to the venting system being placed into operation,

while all other appliances connected to the venting system are

not in operation:
1. Seal any unused openings in venting system.
2. Inspect the venting system for proper size and horizontal

pitch, as required in the NFPA31, Installation of Oil Burning

Equipment and the Canadian Standard B140.4 Oil Fired Warm

Air Furnaces.

Determine that there is no blockage or

restriction, leakage, corrosion and other deficiencies which

could cause an unsafe condition.
3. As far as practical, close all building doors and windows

and all doors between the space in which the appliance(s)

connected to the venting system are located and other spaces

of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected to

the venting system. Turn on any exhaust fans, such as range

hoods and bathroom exhausts, so they are operating at

maximum speed. Do not operate a summer exhaust fan.
6. Follow the lighting instructions. Place the appliance being

inspected into operation. Adjust the thermostat so appliance is

operating continuously.
7. Test for spillage from draft--hood equipped appliances at the

draft--hood relief opening after 5 minutes of main burner

operation. Use the flame of a match or candle.
8. If improper venting is observed during any of the above

tests, the venting system must be corrected in accordance with

the NFPA31, Installation of Oil Burning Equipment and the

Canadian Standard B140.4 Oil Fired Warm Air Furnaces.
9. After it has been determined that each appliance connected

to the venting system properly vents when tested as outlined

above, return doors, windows, exhaust fans, fireplace dampers,

and any other gas--fired burning appliance to their previous

conditions of use.

!

WARNING

For any chimney or vent, this should include the following:

1. Inspection for any deterioration in chimney or vent. If

deterioration is discovered, chimney must be repaired or
vent must be replaced.

2. Inspection to ascertain that vent system is clear and free of

obstructions. Any blockage must be cleared before

installing furnace.

3. Cleaning chimney or vent if previously used for venting a

solid fuel burning appliance or fireplace.

4. Confirming that all unused chimney or vent connections are

properly sealed.

5. Verification that chimney is properly lined and sized per the

applicable codes. (Refer to list of codes in Safety
Considerations section.)

Masonry Chimneys

This furnace can be vented into an existing masonry chimney. This

furnace must not be vented into a chimney servicing a solid fuel
burning appliance. Before venting furnace into a chimney, the

chimney MUST be checked for deterioration and repaired if
necessary. The chimney must be properly lined and sized per local

or national codes.
If furnace is vented into a common chimney, the chimney must be

of sufficient area to accommodate the total flue products of all

appliances vented into chimney.
The following requirements are provided for a safe venting system:

1. Be sure that chimney flue is clear of any dirt or debris.
2. Be sure that chimney is not servicing an open fireplace.
3. Never reduce pipe size below the outlet size of furnace. (See

Fig. 2.)

4. All pipe should be supported using proper clamps and/or

straps. These supports should be at least every 4 ft. (1.2 M)

5. All horizontal runs of pipe should have at least 1/4 in. (6

mm) per ft. (.3 M) of upward slope.

6. All runs of pipe should be as short as possible with as few

turns as possible.

7. Seams should be tightly joined and checked for leaks.
8. The flue pipe must not extend into chimney but be flush

with inside wall.

9. The chimney must extend 3 ft. (.9 M) above highest point

where it passes through the roof of a building and at least 2
ft. (.61 M) higher than any portion of a building within a
horizontal distance of 10 ft. (3.0 M) It shall also be extended

at least 5 ft. (1.5 M) above highest connected equipment
flue collar.

10. Check local codes for any variance.

Step 5 — Factory--Built Chimneys

Listed factory--built chimneys may be used. Refer to chimney

manufacturer’s instructions for proper installation.

UNIT COMPONENT HAZARD

Failure to follow this caution may result in unit component

damage.
This burner is shipped with the oil pump set to operate on a

single

line system. To operate on a

two--line

system the

by--pass plug must be installed. Do not operate a

single

line

system with the by--pass plug installed. Operating a

single

line system with the by--pass plug installed will result in

damage to the pump shaft seal. Pump pressure must be set at

time of burner start--up. A pressure gauge is attached to the

PRESSURE

PORT

for pressure readings. Two

PIPE

CONNECTORS

are supplied with the burner for

connection lines to burner pipe connectors. All pump port

threads are

British Parallel Thread

design. Direct

connection of NPT threads to the pump

will damage

the

pump body. Riello manometers and vacuum gauges

do not

require any adapters, and can be safely connected to the

pump ports. An NPT (metric) adapter (Part no. N05F017)

must be used when connecting other gauge models.

CAUTION

!

374RAN

Summary of Contents for 374RAN

Page 1: ...Check 15 Step 4 Fan Adjustment Check 16 Step 5 Limit Control Check 17 Step 6 For Year Round Air Conditioning 17 CARE AND MAINTENANCE 17 Step 1 General 17 Step 2 Oil Burner 17 Step 3 Heat Exchanger an...

Page 2: ...g gasoline Never burn garbage or paper in the heating system and never leave rags paper or any flammable items around the unit WARNING All local and national code requirements governing installation o...

Page 3: ...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...

Page 4: ...st be avoided Such contamination would include the following ammonia chlorine hydrogen sulfide halogenated hydrocarbons carbon tetrachloride cleaning solvents hydrochloric acid water softening chemica...

Page 5: ...side of Structure If outside air is supplied to a confined space then the 2 openings must be equal and located as above 1 If combustion air is taken through a permanent opening directly communicating...

Page 6: ...each end of attic ends 1 ft 0 3m above floor Water heater A06463 Fig 4 Combustion Air Taken From Outdoors Through Vertical Ducts without louvers in foundation The Outlet air duct and Inlet air duct m...

Page 7: ...ter Outlet air duct Inlet air duct A06465 Fig 6 Combustion Air Taken From Outdoors Through Horizontal Ducts The top opening and the bottom opening must each be 8 in x 18 in when a 105 size furnace is...

Page 8: ...obstructions Any blockage must be cleared before installing furnace 3 Cleaning chimney or vent if previously used for venting a solid fuel burning appliance or fireplace 4 Confirming that all unused...

Page 9: ...installed in the flue between 2 in and 12 in from the furnace outlet and between the furnace outlet and draft regulator See Fig 9 Diagram B Riello A06403 Fig 8 Wiring Diagram for Riello Burner FIRE C...

Page 10: ...e and cleaning pipes The BVSO must be installed between 2 in and 12 in from the furnace outlet Limit Switches A06614 Fig 9 Blocked Vent Shut Off Device Wiring Installation shown Upflow with vertical e...

Page 11: ...n personal injury death or property damage Do not connect aluminum wire between disconnect switch and furnace Use only copper wire WARNING The control system depends on correct polarity of power suppl...

Page 12: ...12 BLOCKED VENT SHUT A06627 Fig 14 Wiring Diagram 374RAN...

Page 13: ...provided for air filter access Refer to Table 4 for filter rack flange dimensions for return air duct Table 4 Filter Size and Quantity UNIT SIZE AIR FILTER SIZE IN mm FLANGE OPENING SIZE IN mm 036105...

Page 14: ...ce Wiring with 1 Speed Air Conditioner A04184 Fig 16 24 VAC Oil Furnace Wiring with 2 Speed Air Conditioner A04185 Fig 17 24 VAC Oil Furnace with 1 Speed Heat Pump A04186 Fig 18 24 VAC Oil Furnace Wir...

Page 15: ...the BLWM keeps continuous blower speed until the end of Short run delay period After which the BLWM operates at the appropriate low cooling airflow When the thermostat is satisfied the BLWM switches t...

Page 16: ...ncluded with damper The draft regulator should be adjusted after furnace has been firing for at least 5 min and set between 0 025 and 0 035 in wc See Table 5 Table 5 Furnace Draft Conditions in wc FUR...

Page 17: ...ion for at least 15 minutes restrict return air supply by blocking filters or closing return registers and allow furnace to shut down on high limit The burner should shut off and main blower should co...

Page 18: ...required If cleaning is necessary the following steps should be performed BURN HAZARD Failure to follow this caution may result in personal injury If furnace has been in operation some surfaces may b...

Page 19: ...D13 R13 JW2 JW3 JW7 LED7 GRN R14 R12 D17 D18 D19 D21 D15 D16 LED4 LED3 LED5 LED7 LED8 LED1 GRN GRN GRN GRN GRN GRN P3 Y Y Y2 G DH O W R C HSC 1 1168 83 1 NOTES 1 The Red LED to the right of P 1 will i...

Page 20: ...SW2 COOL DIP SWITCH POSITION A C SIZE TON AIRFLOW CFM EXTERNAL STATIC PRESSURE IN WC 0 2 0 5 0 7 0 9 A 1 OFF 2 OFF 3 0 918 973 973 827 A 1 OFF 2 OFF 1010 1070 1070 910 A 1 OFF 2 OFF 826 876 876 744 B...

Page 21: ...OLING SW2 COOL DIP SWITCH POSITION A C SIZE TON AIRFLOW CFM EXTERNAL STATIC PRESSURE IN WC 0 2 0 5 0 7 0 9 A 1 OFF 2 OFF 5 0 1738 1738 1738 1725 A 1 OFF 2 OFF 1912 1912 1912 1898 A 1 OFF 2 OFF 1564 15...

Page 22: ...nge at any time specifications or designs without notice and without incurring obligations E2009 Bryant Heating Cooling Systems 7310 W Morris St Indianapolis IN 46231 Printed in U S A Edition Date 05...

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