background image

107272-UIM-B-1105

2

Unitary Products Group

SPECIFIC SAFETY RULES AND PRECAUTIONS

1.

U.S.....No. 1 or No. 2 heating oil only (ASTM D396), 
CANADA.....No. 1 stove oil or No. 2 furnace oil only are approved
for use and can be burned in this furnace. Refer to the furnace rat-
ing plate or SECTION IV of these instructions.

2.

Install this furnace only in a location and position as specified in
SECTION I of these instructions.

3.

An oil-fired furnace for installation in a residential garage must be
installed as specified in SECTION I of these instructions.

4.

Combustion products must be discharged outdoors. The Roof
Jack vent system is the only approved vent system that can be
installed on this furnace. Install as specified in SECTION VI of
these instructions.

5.

Test for leaks in the oil line as specified in SECTION VIII of these
instructions.

6.

Always install the furnace to operate within the furnace’s intended
temperature rise range. Only connect the furnace to a duct system
which has an external static pressure within the allowable range,
as specified on the furnace rating plate.

7.

The return air duct system is not required by the furnace manufac-
turer. This furnace utilizes a sealed combustion air and vent sys-
tem referred to as a roof jack. The Roof Jack must be installed as
specified in these instructions and must conform with state, local,
or regional codes.

8.

It is permitted to use the furnace for heating of buildings or struc-
tures under construction. Installation must comply with all manu-
facturer’s installation instructions including:

Proper vent installation;

Furnace operating under thermostatic control;

Return air filter door must be sealed to the furnace;

Air filters in place;

Set furnace input rate and temperature rise per rating plate
marking;

Means for providing outdoor air required for combustion;

Return air temperature maintained between 55ºF (13ºC) and
80ºF (27ºC);

The air filter must be replaced or thoroughly cleaned upon sub-
stantial completion of the construction process;

Clean furnace, duct work and components upon substantial
completion of the construction process, and verify furnace
operating conditions including ignition, input rate, temperature
rise and venting, according to the manufacturer’s instructions.

The following requirements to be met:

a.

Clean, outside combustion air is provided to the furnace to
minimize the impact of corrosive adhesives, sealants, and
other construction materials. Drywall dust is a major concern
during construction, which can be pulled into the combustion
air path, leading to plugged heat exchangers, burners, and
inducer assemblies.

b.

Filter must be installed in the furnace as specified in the
installation instructions, and must be replaced or thoroughly
cleaned prior to occupancy of the home.  Again, drywall dust
is the key issue, as that dust can be pulled into the circulating
blower motor, plugging the motor vents, coating the rotors
and stators, etc. which can lead to a potential fire hazard.

c.

The temperature of the return air to the furnace must not be
less than 55° F (13° C), with no evening setback or furnace
shutdown, to prevent condensation in the primary heat
exchangers.

d.

The air temperature rise must be within the stated rise range
as indicated on the furnace rating plate, and the firing input
rate must be set to the unit nameplate value.

e.

The external static pressure of the air distribution system
ductwork must be set for heating operation to be at least 0.12
(.03 kPA) to 0.30 (0.7 kPA) inches water column, based on
the input rate of the furnace, with the lower value for input
rates at 66,000 btu/hr and the upper value for units with input
rates at 84,000 btu/hr.

f.

The furnace and ductwork should be thoroughly and com-
pletely cleaned prior to occupancy of the dwelling to insure
the proper operation of the furnace and to avoid potential
health concerns.

9.

In Canada refer to the Oil-fired Central Furnace Installation code,
CANCSA B139 When installed in a Manufactured (Mobile) Home,
combustion air shall not be supplied from occupied spaces.

10. The size of the unit should be based on an acceptable heat loss

calculation for the structure. ACCA, Manual J or other approved
methods may be used.

11.

Manufactured (Mobile) Home and Modular Home Installation:
This appliance must be installed in a (sealed combustion) configu-
ration using a roof jack vent system. A roof jack is the only
approved vent system that can be used to vent this appliance.

12. Modular Home Definition: Factory-built home constructed to the

state, local, or regional code where the house will be located. The
home is transported in one or more modules and joined at the
home site.

13. Manufactured (Mobile) Home Definition: Factory-built home

constructed, transported and installed under the federal building
code administered by the U.S. Department of Housing and Urban
Development (HUD Code), rather than to building codes at their
destination. The house is built, transported and installed on a non-
removable chassis.

14. This furnace is approved for installation in trailers or recreational

vehicles.

SAFETY REQUIREMENTS

A manufactured (mobile) home installation must conform with the
Manufactured Home Construction and Safety Standard, Title 24
CFR, Part 3280, Federal Manufactured Home Construction &
Safety Standard (H.U.D., Title 24, Part 3280) or when such stan-
dard is not applicable, the standard for Manufactured Home
Installations (Manufactured Home Sites, Communities, and Set-
ups) NFPA 31 Installation of Oil-Burning Equipment, CAN/CSA
B139 Installation Codes). This furnace has been certified to the
latest edition of standard UL 727 Standard for Safety for Oil-Burn-
ing Equipment, and for Oil-Fired Central Furnaces (Latest Edi-
tion), CSA B140.10 (Latest Edition), and all local codes and
ordinances.

Refer to the unit rating plate for the furnace model number, and
then see the dimensions page of these instructions for return air
door dimensions in Figure 2. The filter(s) must be installed
according to the instructions.

FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage.
Read all instructions before proceeding. Follow all instructions com-
pletely. Failure to follow these instructions could result in equipment
malfunction, causing severe personal injury, death, or substantial
property damage.

Never attempt to alter or modify this furnace or any of its com-
ponents.

Never attempt to repair damaged or inoperable components.
Such action could cause unsafe operation, explosion, fire and/
or asphyxiation.

If a malfunction has occurred, or if you feel that the furnace is
not operating as it should, contact a qualified service agency or
oil supplier for assistance.

Summary of Contents for DFAA

Page 1: ...33 WIRING DIAGRAM GAS CONVERSION BURNER 38 LIST OF FIGURES Label Location 4 Dimensions 5 Air Distribution Systems 7 Closet To Door Clearance 5 or Greater 7 Furnace To Closet Door Clearance 1 To 5 7 Fu...

Page 2: ...rating plate and the firing input rate must be set to the unit nameplate value e The external static pressure of the air distribution system ductwork must be set for heating operation to be at least 0...

Page 3: ...solutions Chlorinated waxes and cleaners Chlorine based swimming pool chemicals Water softening chemicals De icing salts or chemicals Carbon tetrachloride Halogen type refrigerants Cleaning solvents...

Page 4: ...to the unit The following minimum clearances are recommended 1 Twenty four 24 inches 61 cm between the front of the furnace and an adjacent wall or another appliance when access is required for servic...

Page 5: ...manually operated the damper must be equipped with means to pre vent the furnace or the air conditioner from operating unless the damper is in full heat or cool position The duct system is a very imp...

Page 6: ...t design shall be in accordance with the latest HRA Digest the ASHRAE Handbook Fundamentals or other good engineering prin ciples NOTE Refer to HRA Digest Residential Air System Design Manual Sections...

Page 7: ...the front of furnace 6 inches 15 2 cm minimum clearance must be provided on side where return is located and FIGURE 5 Furnace To Closet Door Clearance 1 To 5 Furnace to Closet Door Clearance Greater...

Page 8: ...es FIGURE 7 Duct Connector Dimensions 2 3 8 6 0 cm 12 30 5 cm 13 33 0 cm 11 27 9 cm 18 3 4 47 6 cm 14 35 6 cm SEE CHART DUCT CONNECTOR PART NUMBER DUCT CONNECTOR DEPTH 7990 6011 7990 6021 7990 6041 79...

Page 9: ...terlock system usu ally contains a heat cool switch which must be turned to either HEAT or COOL to activate either heating or cooling operation or a positive OFF switch on the cooling thermostat When...

Page 10: ...er is to be placed on the top cover and secured with screws as shown in Figure 14 The power wires for the Blend Air Damper are inserted through the 7 8 2 22 cm hole in the top cover The wires to the B...

Page 11: ...ity Fuel Line Installation Continuous lengths of heavy wall copper tubing are recom mended Always use flare fittings Never use compression fit tings Always install fittings in accessible locations Fue...

Page 12: ...Fire Protection Standard for Liquid Fuel Equipment NFPA 31 or in Canada the installation must comply with CSA B139 This pump must be used with a control system that provides a valve on delay pre purge...

Page 13: ...8 SOLENOID WIRING DISCONNECT THE POWER SUPPLY BEFORE WIRING TO PRE VENT ELECTRICAL SHOCK OR EQUIPMENT DAMAGE Lead wires on these devices are long enough to reach the junction box on most burner instal...

Page 14: ...owing directly on the thermostat The wall thermostat should be located 52 to 66 inches above the floor The preferred location is on an inside wall situated in an area with good air circulation and whe...

Page 15: ...sealant or other suitable sealant INSTALLATION IN SNOW REGIONS When the combustion air pipe inlet is covered or blocked with snow the furnace will not operate properly due to the depleted combustion a...

Page 16: ...o Vent Connector and Air Intake Connector and compress gasket See Figure 29 Refer to Interior Roof Jack Extension installation instructions if applicable 4 Align holes in Roof Jack and Air Intake Conn...

Page 17: ...lk 900 sealant Not required for Roof Jacks with fixed slant flashing Complete Installation as required 1 Install Exterior Roof Jack Extension if applicable Refer to installa tion instructions provided...

Page 18: ...4084 7141 is dimensionally the same as 4000 7141 C and is available only in Canada The 4084 7151 is dimensionally the same as 4000 7151 C and is available only in Canada DFAH FURNACES DFAA FURNACES IN...

Page 19: ...0 8181 C SWIVEL FLASHING ADJUSTS FROM 0 12 TO 5 12 PITCH SLANT FLASHING 3 12 PITCH 76 59 1 2 IMPORTANT A B Warm Air Duct Duct Connector Warm Air Duct Duct Connector Floor DFAA MODELS Carefully Sealant...

Page 20: ...Cap Crown Assembly Base STEP 1 Remove upper and lower cap Remove the two 2 screws that secure the upper cap to the crown assembly base and remove the upper cap Next remove the three 3 screws that sec...

Page 21: ...in the vicinity of the vent Also in accordance with the current UL 727 Standard for safety for oil fired central furnaces FIGURE 34 Home Layout L E D B V V V X V B V J X B B B V V F V C B X V I V G H...

Page 22: ...ntrol has entered the Run mode press and release the reset button See Table 10 for equivalent cad cell resistance Preliminary Steps 1 Check wiring connections and power supply 2 Make sure power is on...

Page 23: ...ID flexible tubing that is 12 30 cm in length 5 You will need a clear plastic jug 6 You will need a 7 16 open end or box wrench 7 You will need a 1 4 brass NPT x flare fitting These items are require...

Page 24: ...fications ADJUSTMENT OF TEMPERATURE RISE After about 20 minutes of operation determine the furnace temperature rise Take readings of both the return air and the heated air in the ducts about six feet...

Page 25: ...trimmed as necessary TABLE 14 Blower Performance CFM BLOWER PERFORMANCE CFM DFAA066 FACTORY EQUIPPED WITH STANDARD BLOWERS AND FILTERS EXTERNAL STATIC PRESSURE INCHES WC kPa Blower Speed BTU H kW Inpu...

Page 26: ...Fan 15 Combustion Chamber Assembly 16 Oil Burner Assembly 17 Switch Limit Open 140 Close 110 18 Fastener Door Latch 2 Required 19 Diagram Wiring DFAH MODEL ITEM NUMBER DESCRIPTION 1 Limit Switch Manu...

Page 27: ...107272 UIM B 1105 Unitary Products Group 27 SECTION IX WIRING DIAGRAM OIL FIRED FURNACE FIGURE 37 Wiring Diagram for DFAA Oil Fired Furnace...

Page 28: ...107272 UIM B 1105 28 Unitary Products Group FIGURE 38 Wiring Diagram for DFAH Oil Furnace...

Page 29: ...ols will be readily accessible for inspection cleaning adjust ment and repairs GAS PIPING Installation and Checking of Gas Line Gas Supply piping must be sized in accordance with the recommenda tions...

Page 30: ...ape should be closed Immediately after turning on gas the system should be checked for leaks This can be done by watching the 1 2 cubic feet 0 14 m3 test dial and allowing 5 minutes to show any moveme...

Page 31: ...E EXCESSIVE PIPE SEALANT ON PIPE JOINTS Pipe sealant metal chips or other foreign material that could be deposited in the inlet of the gas valve when gas pipe is installed or carried through the gas p...

Page 32: ...1 0 147 26 9951 1471 0 154 23 9951 1541 0 173 17 9951 1731 5 000 1524 0 128 30 9951 1281 0 144 27 9951 1441 0 152 24 9951 1521 0 169 18 9951 1691 6 000 1829 0 128 30 9951 1281 0 144 27 9951 1441 0 149...

Page 33: ...monoxide poisoning 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 sys...

Page 34: ...3600 then divided by the time it took to measure 0 10 m3 of gas from the gas meter For Propane LP Gas multiply the Heat content of the gas MJ m3 or Default 93 15 times 0 10 m3 of gas measured at the g...

Page 35: ...ts on the gas valve marked OUT and INLET IMPORTANT The cap for the pressure regulator must be removed entirely to gain access to the adjustment screw Loosening or tightening the cap does not adjust th...

Page 36: ...has been obtained re adjust the primary air damper open or closed to visually obtain a blue flame with well defined orange or yellow tips for natural gas or well defined yellow tips for propane gas 2...

Page 37: ...ion air pres sure is sensed by the air proving switch and closes the switch contacts energizing the S89F gas primary control The S87K gas primary control has an internal 30 second prepurge timer After...

Page 38: ...107272 UIM B 1105 38 Unitary Products Group SECTION XII WIRING DIAGRAM GAS CONVERSION BURNER FIGURE 45 Wiring Diagram for DFAA Gas Conversion Burner...

Page 39: ...107272 UIM B 1105 Unitary Products Group 39 FIGURE 46 Wiring Diagram for DFAH Gas Gun...

Page 40: ...o change without notice Printed in U S A 107272 UIM B 1105 Copyright by York International Corp 2005 All rights reserved Supersedes 107272 UIM A 0905 Unitary 5005 Norman Product York OK Group Drive 73...

Reviews: