Newmac NH3-122 Service manual

INSTALLATION, OPERATING
and
SERVICE MANUAL
THE INSTALLATION OF THE UNIT SHALL BE IN ACCORDANCE WITH THE
REGULATIONS OF THE AUTHORITIES HAVING JURISDICTION.
OIL-FIRED HI-BOY – HEAVY DUTY FURNACES
MODELS: NH3 and LFR
HEAD OFFICE
MARKETING / PRODUCTION
Newmac Mfg. Inc.
208 LANCASTER CRESCENT
P.O. BOX 9, DEBERT
NOVA SCOTIA, BOM 1G0
PHONE: [phone]
FAX: [phone]
WAREHOUSE
Newmac Mfg. Inc.
430 SPRINGBANK AVE., SOUTH
WOODSTOCK, ONTARIO
N4V 1B2
PHONE: [phone]
FAX: [phone]
156156
EMAIL: [e-mail]
WEB SITE: newmacfurnaces.com
NOTICE TO HOMEOWNER:
READ AND SAVE THESE INSTRUCTIONS
2210272 March 2010
Printed:__________Subject to change without notice

1
TABLE 1
NH3 GENERAL INSTRUCTIONS
UPFLOW CONFIGURATION
BURNER AIR SETTING DIRECT DRIVE SPEEDTAP BELT DRIVE
MODEL RIELLO
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i. INSERTION inches TURB SHUTTER
CHIMNEY
FLUE
PRESSURE
(in w.c.)
GROSS
STACK
°F
FILTER SIZE
(QTY) 12”
BLOWER 10” BLOWER 9” BLOWER PULLEY COMBINATION TURNS OPEN
EXTERNAL
STATIC
PRESSURE
(in w.c.)
MED-HI MED-HI MED-HI
NH3 – 122 40 F3 122,000 144,976
(1.04) 81.1 Delavan 0.85 X 60° B Monarch 0.85 X 60° R 150 4 5/8” 3 4.0 -0.02 500 16” X 24” (2) MED-HI MED-HI MED-HI
MED MED-LO MED-HI 3-1/4” X 6” 1 – 1/2 0.20
NH3 – 109 40 F3 109,000 128,248
(0.92) 81.5 Delavan 0.75 X 60° B Monarch 0.75 X 60° R 150 4 5/8” 3 3.1 -0.02 460 16” X 24” (2) MED MED-LO MED-HI 3-1/4” X 5” 1 0.50
MED-LO MED-LO MED-LO 3-1/4” X 6” 2-1/2 0.20
NH3 – 95 40 F3 95,000 111,520
(0.80) 82.2 Delavan 0.65 X 60° B Monarch 0.65 X 60° R 150 4 5/8” 2 2.7 -0.02 425 16” x 24” (2) MED MED-LO MED-HI 3-1/4” X 5” 2 0.50
MED-LO LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 90 40 F3 89,000 103,156
(0.74) 82.7 Delavan 0.60 X 60° B Monarch 0.60 X 60° R 150 4 5/8’ 1.5 2.5 -0.02 400 16” X 24” (2) MED LO MED-LO 3-1/4” X 5” 2-1/2 0.50
BURNER AIR SETTING DIRECT DRIVE SPEED TAP BELT DRIVE
MODEL BECKETT
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i. INSERTION inches SHUTTER AIR BAND
CHIMNEY
FLUE
PRESSURE
(in w.c.)
GROSS
STACK
°F
FILTER SIZE
(QTY) 12”
BLOWER 10” BLOWER 9” BLOWER PULLEY COMBINATION TURNS OPEN
EXTERNAL
STATIC
PRESSURE
(in w.c.)
MED-HI MED-LO MED-HI
NH3 – 117 AFG60YHHS 117,000 139,400
(1.00) 81.0 Delavan 1.00 X 70° A Monarch 1.00 X 70° NS 100 5” 10 1 -0.02 515 16” X 24” (2) MED-HI MED-HI MED-HI
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 101 AFG60YHHS 101,000 118,490
(0.85) 81.7 Delavan 0.85 X 70° A Monarch 0.85 X 70° NS 100 5” 8 0 -0.02 475 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 89 AFG60YHHS 89,000 104,550
(0.75) 82.7 Delavan 0.75 X 70° A Monarch 0.75 X 70° NS 100 5” 6 0 -0.02 450 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED-LO LO LO 3-1/4” X 6” 3 0.20
NH3 – 77 AFG60YHHS 77,000 90,610
(0.65) 82.5 Delavan 0.65 X 70° A Monarch 0.65 X 70° NS 100 5” 5 0 -0.02 425 16” X 24” (2) MED-LO LO LO 3-1/4 X 5” 2-1/2 0.50
DIRECT DRIVE SPEED TAP BELT DRIVE
MODEL AERO
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i. INSERTION inches
BURNER AIR SETTING
AIR BAND
CHIMNEY
FLUE
PRESSURE
(in w.c.)
GROSS
STACK
°F
FILTER SIZE
(QTY) 12”
BLOWER 10” BLOWER 9” BLOWER PULLEY COMBINATION TURNS OPEN
EXTERNAL
STATIC
PRESSURE
(in w.c.)
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 100 HF-US-2X 101,000 118,490
(0.85) 81.7 Delavan 0.85 X 70° A Monarch 0.85 X 70° NS 100 5” 7/16” -0.02 450 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 88 HF-US-2X 89,000 104,550
(0.75) 82.7 Delavan 0.75 X 70° A Monarch 0.75 X 70° NS 100 5” 5/8” -0.02 425 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED-LO LO LO 3-1/4” X 6” 3 0.20
NH3 – 78 HF-US-2X 77,000 90,610
(0.65) 82.5 Delavan 0.65 X 70° A Monarch 0.65 X 70° NS 100 5” 7/8” -0.02 400 16” X 24” (2) MED-LO LO LO 3-1/4” X 5” 2-1/2 0.50
BURNER AIR SETTING DIRECT DRIVE SPEEDTAP BELT DRIVE
MODEL CARLIN
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i.
INSERTION
inches POSITIONING
BAR AIR BAND
CHIMNEY
FLUE
PRESSURE
(in w.c.)
GROSS
STACK
°F
FILTER SIZE
(QTY) 12”
BLOWER 10” BLOWER 9” BLOWER PULLEY COMBINATION TURNS OPEN
EXTERNAL
STATIC
PRESSURE
(in w.c.)
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 99 EZ-1 101,000 118,490
(0.85) 81.7 Delavan 0.85 X 70° A Monarch 0.85 X 70° NS 100 5” 0.85-1.00 GPH 0.65 -0.02 450 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED MED-LO MED-LO 3-1/4” X 6” 3 0.20
NH3 – 87 EZ-1 89,000 104,550
(0.75) 82.7 Delavan 0.75 X 70° A Monarch 0.75 X 70° NS 100 5” 0.75 GPH 0.60 -0.02 415 16” X 24” (2) MED MED-LO MED-LO 3-1/4” X 5” 2-1/2 0.50
MED-LO LO LO 3-1/4” X 6” 3 0.20
NH3 – 76 EZ-1 77,000 90,610
(0.65) 82.5 Delavan 0.65 X 70° A Monarch 0.65 X 70° NS 100 5” 0.60-0.65 GPH 0.50 -0.02 380 16” X 24” (2) MED-LO LO LO 3-1/4” X 5” 2-1/2 0.50
Use burner air settings as a guide only. Set burner air to give a trace of smoke. Re-adjust burner air to reduce CO2by 1 to 1.5 percent. Take measurements with the burner cover & air ducts installed
(if any).
The maximum allowable temperature rise is 85°F. Select speed to suit specific installation requirements. Air temperature can be lowered by increasing the blower speed; lowering the firing rate; or
increasing supply & return outlets.
The minimum recommended temperature rise is 65°F.

2
TABLE 2 – NH3 BLOWER PERFORMANCE
DIRECT DRIVE
BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS DIRECT DRIVE BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS
HIGH 1,045 1,610 4.00 HIGH 1,010 1,775 4.25
MED-HI 850 1,200 3.00 MED-HI 790 1,250 3.00
MEDIUM 750 1,090 2.50 MEDIUM 720 980 2.25
MED-LO 710 860 2.00 MED-LO 670 830 2.00
DELHI GT 12-7 DD 3/4 HP
5 SPD
LO 680
0.50
760 1.75
LAU DD 12-8AT 3/4 HP
5 SPD
LO 510
0.50
740 1.75
HIGH 1,040 1,735 HIGH 980 1,975
MED-HI 760 1,260 MED-HI 700 1,340
MEDIUM 650 1,115 MEDIUM 610 1,040
MED-LO 585 915 MED-LO 540 910
DELHI GT 12-7 DD 3/4 HP
5 SPD
LO 540
0.20
800
LAU DD 12-8AT 3/4 HP
5 SPD
LO 500
0.20
810
DIRECT DRIVE
BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS DIRECT DRIVE BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS
HIGH 1,055 1,420 3.50 HIGH 1,115 1,300 3.00
MED-HI 1,010 1,280 3.00 MED-HI 1,090 1,230 3.00
MED-LO 920 1,115 2.75 MED-LO 1,050 1,125 2.75
DELHI G10-8 DD 1/2 HP
4 SPD
LO 845
0.50
900 2.25
DELHI G9 DD 1/2 HP
4 SPD
LO 1,000
0.50
1,065 2.50
HIGH 1,015 1,540 HIGH 1,095 1,495
MED-HI 925 1,390 MED-HI 1,050 1,380
MED-LO 795 1,180 MED-LO 985 1,230
DELHI G10-8 DD 1/2 HP
4 SPD
LO 670
0.20
940
DELHI G9 DD 1/2 HP
4 SPD
LO 890
0.20
1,140
DIRECT DRIVE
BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS BELT DRIVE BLOWER BLOWER MOTOR
PULLEY
TURNS
OPEN RPM STATIC
PRESSUR
E (in w.c.) CFM A/C
TONS
HIGH 1,095 1,250 3.00 1 1,017 1,200 3.00
MED-HI 1,045 1,165 2.75 1-1/2 970 1,050 2.50
MED-LO 980 960 2.25 2 985 1,000 2.50
DELHI G9 DD
or
TORIN DC 916-916-5
1/3 HP
4 SPD LO 920
0.50
835 2.00
DELHI G9 BD
or
TORIN BC 916-916-5
c/w 6” Pulley
1/2 HP c/w
3-1/4” VS
Pulley 3 915
0.50
840 2.00
HIGH 1,065 1,415 1-1/2 845 1,100
MED-HI 980 1,255 2 820 1,090
MED-LO 850 1,070 2-1/2 795 985
DELHI G9 DD
or
TORIN DC 916-916-5
1/3 HP
4 SPD LO 750
0.20
875
DELHI G9 BD
or
TORIN BC 916-916-5
c/w 6” Pulley
1/2 HP c/w
3-1/4” VS
Pulley 3 770
0.20
970

3
TABLE 3 - LFR GENERAL INSTRUCTIONS
BURNER AIR DIRECT DRIVE TAP
MODEL RIELLO
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i.. INSERTION inches BAND SHUTTER
CHIMNEY
FLUE
PRESSURE
(in. w.c.)
GROSS
STACK
oFFILTER 10" BLOWER 9" BLOWER
EXTERNAL
STATIC
PRESSURE
(in. w.c.)
MED-LO MED-HI 0.20
LFR-88 40 F3 88,000 101,762(0.73) 81.7 Delavan 0.60 60A 150 2" 1.5 3.4 -0.02 380 20" x 25" MED-HI 0.50
LO MED-LO 0.20
MED-LO HI 0.50
LFR-75 40 F3 75,000 85,034(0.61) 81.2 Delavan 0.50 80B 150 2" 0.5 2.7 -0.02 350 20" x 25" LO MED-HI 0.50
BURNER AIR DIRECT DRIVE TAP
MODEL BECKETT
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i.. INSERTION Inches SHUTTER BAND
CHIMNEY
FLUE
PRESSURE
(in. w.c.)
GROSS
STACK
oFFILTER 10" BLOWER 9" BLOWER
EXTERNAL
STATIC
PRESSURE
(in. w.c.)
MED-LO MED-HI 0.20
LFR-89V AFG70MM 89,000 101,762(0.73) 82.2 Hago 0.55 45B 180 2-3/8" 6 0 -0.02 400 20" x 25" MED-HI 0.50
MED-LO MED-HI 0.20
LFR-80V AFG70MM 81,000 93,398(0.61) 82.0 Hago 0.50 45B 180 2-3/8" 7.5* 0 -0.02 360 20" x 25" MED-LO HI 0.50
* USE LOW FIRING RATE BAFFLE
BURNER AIR DIRECT DRIVE TAP
MODEL RIELLO
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i.. INSERTION inches TURB SHUTTER
CHIMNEY
FLUE
PRESSURE
(in. w.c.)
GROSS
STACK
oFFILTER 10" BLOWER 9" BLOWER
EXTERNAL
STATIC
PRESSURE
(in. w.c.)
MED-LO MED-HI 0.20
LFR-86V BF3 86,000 100,386(0.72) 82.3 Delavan 0.60 60A 145 2" 1.5 4.4 -0.02 380 20" x 25" MED-HI 0.50
LO MED-LO 0.20
LFR-73V BF3 73,000 83,640(0.60) 81.9 Delavan 0.50 80B 145 2" 1 3.8 -0.02 350 20" x 25" MED-LO HI 0.50
BURNER AIR DIRECT DRIVE TAP
MODEL CARLIN
BURNER B.T.U.H. OUTPUT
B.T.U.H.
INPUT
(USGPH)
AFUE
%NOZZLE PUMP p.s.i.. INSERTION inches POS BAR BAND
CHIMNEY
FLUE
PRESSURE
(in. w.c.)
GROSS
STACK
oFFILTER 10" BLOWER 9" BLOWER
EXTERNAL
STATIC
PRESSURE
(in. w.c.)
MED-LO MED-HI 0.20
LFR-87 EZ PRO 87,000 101,762(0.73) 81.7 Delavan 0.60 60A 150 1-1/2" 0.60/0.65 0.75 -0.02 390 20" x 25" MED-HI 0.50
LFR-72 EZ PRO 73,000 85,034(0.61) 80.7 Delavan 0.50 60A 150 1-1/2" 0.5 0.60 -0.02 360 20" x 25" LO MED-LO 0.20
Models marked -V can be used with the Newmac SVS sealed vent system.
Use burner air settings as a guide only. Set burner air to give a trace of smoke. Re-adjust burner air to reduce CO2by 1 to 1.5 percent.
Take measurements with the burner cover & air ducts installed (if any). The minimum recommended temperature rise is 65oF.
The maximum allowable temperature rise is 85oF. Select speed to suit specific installation requirements.
Air temperature can be lowered by increasing the blower speed, lowering the firing rate, or increasing supply & return outlets.
TABLE 4 - LFR BLOWER PERFORMANCE
DIRECT DRIVE
BLOWER BLOWER MOTOR SPEED TAP RPM STATIC
PRESSURE
(IN. W.C.) CFM A/C
TONS
HIGH 1,080 1,200 3.00
MED-HI 1.030 1,000 2.50
MED-LO 960 875 2.00
DELHI GT 10DD 1/3 HP
4 SPD LO 910
0.50
750 1.75
HIGH 1,050 1,350
MED-HI 850 1,200
MED-LO 740 1,000
DELHI GT 10DD 1/3 HP
4 SPD LO 670
0.20
800

4
FURNACE LOCATION
IMPORTANT
Please read this entire manual and all labels before installing the furnace.
UNPACKING AND INSPECTION
It is the responsibility of the consignee of the unit to examine the packages for damage and, if found, to
note the same on the Carrier’s Bill of Lading.
The NH3 furnace is shipped in one package complete with oil burner, draft regulator, filter racks, air filters,
A/C Control Center (optional) and instruction manual. The LFR is shipped in two packages.
Caution: Remove shipping retaining bracket from blower before start-up.
HEAT LOSS
Before installation, verify the furnace output capacity meets the building heat loss requirements. A detailed
heat loss analysis is recommended.
INSTALLATION REGULATIONS
This unit should be installed in accordance with the regulations of the authority having jurisdiction. In
Canada the installation must conform to CSA Standard B139, "The Installation Code for Oil Burning
Equipment." In the United States, the National Fire Protection Association Standard NFPA 31 should be
followed. Check with provincial, state, or local codes concerning clearances, venting system
requirements and other regulations governing installation. Some codes may vary from the requirements
set forth in this manual.
FOUNDATION
To ensure the furnace is on a level foundation and above any possible dampness, a cement pad is
recommended.
CLEARANCES
The minimum clearances to combustible materials are as follows:
6"
Side Rear Top Front* Flue Pipe Floor
NH-3 6” 6” 1” 24” 9” Combustible
LFR 1” 2” 1” 16” 9” Combustible
* Measured from the panel on which the burner is installed. Allow sufficient room for servicing.
FOR YOUR SAFETY: Do not store or use gasoline or flammable vapors and liquids in the vicinity of this or any
other appliance.
VENTING PRODUCTS OF COMBUSTION
CHIMNEYS
A negative overfire pressure should be maintained. Locate the furnace as close to the chimney or flue as
possible. The maximum draft is obtained by keeping elbows and pipe length to a minimum. Install the
flue pipe with a gradual rise of at least 1/4" per foot from the furnace to the flue. Do not extend the flue
pipe beyond the inside wall of the chimney. Refer to Table 11(a) and Table 11(b) for proper chimney flue
sizing and Fig. 23 for optimizing chimney draft.
The owner shall provide a chimney constructed to comply with the following specifications:
(a) The chimney must be absolutely smoke tight throughout its entire length, and must extend at least
three feet (3') above a flat roof or two feet above the ridges of peak roofs.

5
(b) If built of a single thickness of brick or of cement blocks, it shall be lined throughout its entire length
with fire clay lining, having not less than three-fourths inch (3/4") thickness. Flue lining is to be laid in
mortar and made airtight. If the chimney is of the prefabricated type, it must be an approved class "A"
chimney or type "L" Vent for interior.
(c) The furnace flue must have no other openings for attaching any fireplace, stove, range, gas or
ventilating connection unless the equipment is appropriately certified.
(d) If it is necessary to offset the flue, it must be done in such a manner as not to reduce the gross cross-
sectional area or create a ledge or obstruction, where loose material may lodge.
(e) Flue pipe connections must be secured with metal screws.
CAUTION: Oil-fired appliances shall be connected to flues or vents having sufficient draft at all
times to ensure safe and proper operation of the appliance.
BAROMETRIC DRAFT REGULATOR
A Listed/Certified draft regulator must be installed between the appliance and the chimney, within easy
reach for adjustment and free from obstruction. Use larger or multiple draft regulators for chimneys with
strong draft. Follow the manufacturer's instructions located with the draft regulator for proper installation.
BLOCKED VENT SWITCH
The WMO-1 blocked vent control is required on Newmac oil-fired and combination furnaces or boilers
installed in Canada. The WMO-1 switch must be installed on the chimney vent pipe for Newmac oil fired
furnaces and boilers; and installed on the burner plate for Newmac combination wood/oil or coal/oil fired
furnaces. Do not use the WMO-1 Blocked Vent Switch with the Newmac Sealed Vent System (SVS).
Refer to the Newmac and Field Controls Instructions enclosed in the WMO-1 package.
Wiring WMO-1
Cad
Cell
T
T
F
F
Limit
Motor
Ignition
WMO-1 Primary Control
Connect WMO-1 at
appliance junction box
CL series combination furnaces:
Connect WMO-1 at the burner
control junction box
(except CL series)
Burner
N
POWER VENTING
The NH3 furnace is certified for use with Field Controls SWGII-5 Through the Wall Venter. This vent kit
p/n 2040023 contains the NM-61 electronically activated post purge control. Secondary Safety Switch
WMO-1 is optional. Consult installation codes for requirements and approvals governing power venters
and draft inducers. Follow the instructions supplied with the vent system for proper installation.
LFR furnace models with the suffix –V are certified for use with the NEWMAC SVS sealed direct vent
system.

6
PROPER DUCT SIZING
Locate the furnace as close as possible to the center of the heat distribution system and make sure the
top is level. Refer to TABLES 6 and 7, DUCT SIZING FOR HEATING and COOLING in this manual.
AIR CONDITIONING
This appliance is designed to accommodate air conditioning equipment. A/C ready models incorporate a
fan center transformer / relay. Live motor leads must be isolated on direct drive motors using a two speed
fan & limit control or a suitable fan center control.
HUMIDIFIER
If a humidifier is installed, ensure water cannot drip on the heat exchanger. This will damage the furnace
and void the warranty.
ELECTRICAL CONNECTIONS
The NH3-4 furnace is rated at 120V, 60Hz, 1-Phase, 20 Amp fuse.
The LFR and NH3 furnaces are rated at 120V, 60Hz, 1-Phase, 15 Amp fuse
See the furnace marking label. Follow the National Electrical Code as well as provincial, state, and local
regulations. Figs. 13, 14 and 15 show standard wiring schematics.
FUEL SYSTEMS
Fuel not heavier than No. 2 fuel oil must be used. The oil supply tank must be of a listed or certified type
acceptable to the regulatory authority having jurisdiction. Install the oil tank or tanks according to local codes
and regulations. The tank should be kept at least 1/4 full. If a two-pipe system is used, suction and return lines
should be of the same diameter and extend to the same depth in the tank. An emergency oil shut-off valve
should be installed as required by local ordinance. This can be manual, electric solenoid, or vacuum operated.
An oil safety valve that cuts the fuel supply unless a vacuum is created by the pump is recommended. Any
leaks in the system will prevent oil from flowing. Suntec PRV or Webster OSV valves are recommended.
Loop copper lines connected directly to the oil pump to reduce vibration. Use separate oil line for each
individual appliance to prevent “loss of prime” problems.
THERMOSTAT
Locate the thermostat on an interior wall free from drafts approximately 5 feet above floor level. The operation
of the burner is normally controlled by the room thermostat, which may be set for the temperature desired,
typically 70°F. if a higher or lower temperature is desired, the indicator should be set to the proper point on the
scale.
THERMOSTAT HEAT ANTICIPATOR
To prevent short cycling, the heat anticipator should be set as recommended in the specifications for the burner
primary control. This is typically set at 0.1 or 0.2 amps as indicated in Figure 1. This adjustment changes the
thermostat’s response time to prevent the room temperature from over-running the thermostat setting.
FIG. 1 - Heat Anticipator
WARNING: The heat anticipator will BURN OUT if 25 volts are applied directly to the thermostat by
shorting out the primary control during testing or incorrect wiring. If this happens the thermostat
warranty is void.

7
FAN & LIMIT CONTROL
This thermally operated control has a probe to sense air temperature inside the appliance adjacent to the heat
exchanger. Fig. 3 shows the main parts of a Honeywell L4064 Fan & Limit Control. Refer to Fig. 4 for its
settings. For controls equipped with the Manual-Auto switch button constant fan operation can be achieved by
pushing it to the MAN position.
High Limit Setting: See Figs. 2, 3 and 4. This setting is factory set – DO NOT CHANGE
The high limit setting limits burner operation. When the air temperature inside the appliance reaches the set
high limit value, overheating of the furnace is prevented by cutting power to the burner. When the temperature
falls below the set high limit the burner power is restored.
Fan-On Setting: See Figs. 2, 3 and 4. This setting starts the air circulation blower when the burner has warmed
the furnace to the fan-on temperature
Fan-Off Setting: See Figs. 2, 3 and 4. This setting keeps the air circulation blower running until the temperature
of the heat exchanger drops to the fan-off temperature. This ensures the blower adequately cools the heat
exchanger before shutting off and keeps cool air from being circulated through the ductwork.
Fan differential (difference between the Fan On & Fan Off settings) should be at least 15oF (8oC).
FIG. 4. FAN AND LIMIT SETTINGS
FAN ON FAN OFF LIMIT*
NH3 125 90 200
LFR 110 90 200
* Do not change high limit setting
COMBUSTION AND VENTILATION AIR FOR CHIMNEYS & POWER VENTERS
Free air for combustion and ventilation must be permanently provided to the furnace room. Combustion
air refers to the total air requirements of the fuel-burning appliance. This includes air for the combustion
process and air to provide chimney draft (dilution air). Ventilation air provides free circulation of air in the
room where the appliance is located to keep ambient temperatures within safe limits under normal
conditions.
FIG. 2. TWO SPEED FAN & LIMIT CONTRL-L6064A FIG. 3. SINGLE SPEED FAN & LIMIT - L4064B

8
Furnaces installed in tight houses, in houses which have air-handling devices with unbalanced airflows, or
in enclosed spaces are very likely to have homeowners complain of smoke, fumes, burner lockouts, and
excessive fuel consumption. This is more prevalent in post 1985 construction due to the tighter building
construction as prescribed by the latest building codes. Regulations are relatively specific on the
minimum allowable quantities of ventilation and combustion air required once the space category is
determined. However, every house is subject to different internal and external conditions and regulations
vary among localities. With this in mind, Newmac recommends provision for combustion and ventilation
air as specified in Table 5. Table 5 is based on relevant commonly available codes and regulations.
Values indicated in Table 5 are based on the maximum input rating for this single appliance. However, in
making combustion and ventilation analysis the aggregate input rating of all appliances in the space must
be considered. The installation of additional oil-fired appliances may require more combustion and
ventilation air. When sizing combustion and ventilation air ducts, allowance must also be made for the
blocking effect of louvers, grilles and screens. If the design and free area is unknown, wood louvers
generally have 20-25% free area and metal louvers or grilles have 60-75% free area. Screens should not
be less than 1/4 inch mesh.
TABLE 5. COMBUSTION & VENTILATION AIR SIZING
FLOORAREA SPACE Vertical Ducts&Direct OpeningSizes Horizontal Duct Sizes(in.)
APPLIANCE (Squarefeet) CATEGORY FreeArea LXW(QTY) Dia.(QTY) FreeArea LXW(QTY) Dia.(QTY)
Total (in.2) (in.Xin.) (in.) Total(in.2) (in.Xin.) (in.)
morethan725 Unconfined 30 4x8(1) 6(1) 30 4x8(1) 6(1)
725orless Confined 72 4x9(2) 7(2) 145 4x18(2) 10(2)
morethan725 Unconfined 21 4x6(1) 5(1) 21 4x6(1) 5(1)
725orless Confined 52 4x7(2) 6(2) 105 6x 9(2) 8(2)
NH3
LFR
Freeareaofductsassumesairisconveyedfromoutside
The following should be kept in mind when using Table 5:
 All applicable codes and regulations must be followed.
 Free duct area is for ducts and opening to outdoors.
 Unconfined free area values are based on 1 sq. in per 5,000 Btu/hr of the maximum input rating.
 Confined free area of vertical ducts is based on 1 sq. in per 4,000 Btu/hr of the maximum input rating.
 Confined free area of horizontal ducts is based on 1 sq. in per 2,000 Btu/hr of the maximum input
rating.
 Two openings of equal size are required for confined spaces.
 Maximum length of run for ducts is 50 ft. Duct size allowances must be made for longer runs.
 Ducts should be designed or insulated to prevent condensation. If insulating, a minimum insulation
value of R-3 is required.
 In the case where one opening or duct is specified and combustion and ventilation air is still
inadequate, a second duct may be required. Locate one high and the other low for air circulation.
It is particularly important to duct the cold air as close to the appliance as possible. A means of closing
the air openings when the appliance is not operating may be required. Except for an SVS sealed vent
installation, outside air ducts should not be connected either to the burner or to the appliance.
Guidelines to determine the need for additional combustion and ventilation air may not be adequate for
every situation. If in doubt, it is advisable to err on the safe side and provide additional air.
Fig. 5 shows a typical appliance installation. In this case there is a furnace and a water heater in an
enclosed space--both require ventilation and combustion air which is delivered by the top and bottom air
ducts.
As long as adequate combustion and ventilation air is supplied, the confined appliance room with ducted
air offers several advantages:

9
 The incoming cold air is confined to the furnace room. Therefore, the residence occupants are less
susceptible to drafts. Cool outdoor air will be tempered by the ambient temperature of the furnace
room before it enters habitable spaces.
 Noise levels may be reduced.
 The furnace will be less susceptible to combustion spillage and back-drafting in low draft situations
reducing odor and smoke. Moderate amounts of smoke and fumes will be contained and expelled
safely outdoors.
 Incomplete combustion of any carbon-based fuel may produce deadly carbon monoxide. Ventilation
may dilute any carbon monoxide produced under abnormal operating conditions.
 Adequate air for combustion will help maintain the proper air-fuel ratio. Appliances, which are burning
fuel rich, will produce soot and burn excessive fuel. A 1/8 inch thick deposit of soot on the surface of
the heat exchanger is equivalent to 1 inch of fiberglass insulation.
 Modern efficient oil burning appliances tend to be physically smaller than are their predecessors are.
As a result, hot surfaces such as those on flue connectors are not as high off the ground or floor as
they used to be. A separate furnace room with a “child proof” door is an important safety precaution.
FIG. 5. APPLIANCE LOCATED IN CONFINED SPACE
WITH ALL AIR FROM OUTDOORS

10
OIL BURNER INSTRUCTIONS
BURNER CARE
This burner is fully automatic in operation. All adjustments should be made by a qualified technician.
Keep the burner free from excess dirt and moisture. Oil leaks should be tended to immediately. If the
burner motor has oiler openings, the motor should be given a few drops of SAE 20 non-detergent oil at
least two or three times a year. No other parts require lubrication.
CAUTION: Do not use gasoline, crankcase or any oil containing gasoline. Do not tamper with the
unit or controls--call the serviceman. Do not attempt to start the burner when excess oil has
accumulated, when the unit is full of vapor, or when the combustion chamber is very hot. Do not
start the burner unless the cleanout doors are secured in place. Do not burn garbage or paper in
the heating system. Never leave combustible materials such as paper or rags near the unit.
OIL BURNER INSTALLATION
Install the oil nozzle in the burner firing assembly, and check the adjustments. See Fig. 6 and Table 6 for the
correct electrode settings. These settings are critical for proper burner operation. Some burner manufacturers
have a gauge available for setting the electrodes. Most burners with adjustable heads have preset stops to
ensure the distance from the nozzle face to the face of the retention head (“Z” dimension) is correct. Set or
check the air tube insertion depth according to Fig. 7 and Table 6. This is the distance from the face of the
burner-mounting flange to the face of the retention head. Mount the oil burner on the lugs of the burner plate
carefully centering it in the combustion chamber port. Use TABLES 1 (NH3) or 3 (LFR), GENERAL
INSTRUCTIONS for preliminary air settings for the burner.
BURNER SET-UP AND ADJUSTMENT
The installer must use a suitable draft gauge, smoke tester, carbon dioxide tester, 0-750°F stack
thermometer, 0-200 psi oil pressure gauge, 0-30 in. Hg. vacuum gauge, and 0-220°F thermometer to
properly set-up the burner.
1. Turn on supply power and set the thermostat above room temperature.
2. Open all oil lines and valves.
3. Make sure the oil pump by-pass plug is correctly installed for a one or two pipe system. Bleed any air
from the oil pump (refer to pump manufacture's instructions).
4. Adjust the burner air until a #1 smoke or less is reached using a smoke tester. If a smoke
tester is unavailable, slowly close the air band until the fire becomes smoky. Slowly increase the air
until a small amount of smoke is observed at the flame tips.
If the burner fails to start, check (a) oil supply, (b) ignition electrodes and transformer, (c) cad cell.
If the burner goes off on safety, do not push the reset button on the primary control for at least 10
minutes.
Do not push the reset button more than once before correcting the cause. If the burner still does
not start, press the reset on the burner motor.
5. Using a suitable draft meter, adjust the barometric draft regulator to measure the specified flue
pressure. This requires that a 5/16" diameter sampling hole be made between the flue collar and the
draft regulator.
EXTENDED SHUT DOWN PERIODS
When the appliance is not to be used for an extended period of time, set the thermostat at its lowest
value, turn off the main switch and close the oil burner supply valve. If the heating unit room is damp,
protect the burner against dirt and moisture with a light cover. To resume operation, remove the cover
and inspect the burner. Remove any dirt and debris gently to avoid the need to adjustment the air band.
Open the supply valve and turn on the main switch. If the burner fails to operate, see the MAINTENANCE
& SERVICE section of this manual.

11
ELECTRODE SETTINGS
FIG 6A FIG 6B FIG 6C
FIG 7 BURNER INSERTION TABLE 6 DIMENSIONAL RELATIONSHIPS (Figs 6 & 7)
`Use burner manufacturer’s gauge if supplied.
OIL FILTER
Use a 10 micron or better filter. We recommend an additional in-line filter. The oil filter should be cleaned
or replaced at least once a year by the serviceman.
OIL PUMP AND FUEL SYSTEM
Make sure the by-pass plug is correctly located for a one or two pipe system. Failure to do so may
damage the pump. Generally, for 3/8” copper tubing, the vertical lift should not exceed 8 feet and the
horizontal run should be limited to 30 feet. Do not exceed 10 psi inlet line pressure.
Single pipe systems are recommended for gravity feed or when the tank outlet is at a higher elevation
than the pump inlet. Refer to Fig. 10. The inlet vacuum should be no more than 6" Hg.
Two pipe systems are recommended for lift feed or when the pump inlet is at a higher elevation than the
tank outlet. Install the return line termination higher than the supply intake as shown in Fig. 10. Generally,
the inlet vacuum should be no more than 12" Hg.
Correct piping is critical to long-term operation of the fuel system. Never use compression fittings.
Minimize the resistance to flow due to excessive line lengths; high lift; and unnecessary fittings, kinks and
bends. This will decrease the running vacuum and the risk of air separation. A “Tigerloop” fuel oil de-
aerator may improve the performance of poorly designed fuel oil delivery systems.
Riello 40 or BF Beckett Std.
Head Beckett Adj. Head Aero Carlin
A 5/32” 5/32” 5/32” 1/8” 1/8” to 5/32”
B 13/64” 7/16” 7/16” 7/32” 5/16”
C 5/64” to 7/64” 1/16” 1/16” 1/8” 1/16”
Z Refer to Turbulator
Setting 1-1/8” (Fig 6A) 1-3/4” (Fig 6C) 1-1/8” (Fig 6A) Use Positioning Bar
E - NH3 4-5/8” 5” 5” 5” 5”
E - LFR 2” 2-3/8” 2-3/8” 2” 1-1/2”
Z
A
BC
E

12
BURNER OIL PRESSURE CHECK
Install the pressure gauge directly on the gauge or nozzle port. Adjust to the pressure specified by
Newmac for the nozzle input rating. Refer to TABLE 1 (NH3) or 3 (LFR), GENERAL INSTRUCTIONS in
this manual or the certification label on the appliance.
Each oil burner should have its own suction line. A common return line can be used as long as the
diameter is large enough. Check valves are not required on properly installed systems. Service on fuel
units should not be attempted without a suitable vacuum and pressure gage.
The oil piping information presented here is intended as a guide only. For piping system design
data, consult the installation instructions from the pump manufacturer.
FURNACE SET UP AND MAINTENANCE
BLOWER MOTORS
Motor manufacturers supply some motors that do not require oiling. Oil ports usually have plastic covers
and are found on the motor end caps. If oil ports are not incorporated, oiling is not required. For motors
with provision for re-oiling use SAE 20 non-detergent oil or oil specially formulated for electric motors.
Use only a few small drops two or three times a year.
COMBUSTION CHAMBER
For the NH3, make sure the cerafelt combustion chamber was not damaged or mis-aligned during
shipping. Inspect the combustion chamber periodically and replace if necessary. The LFR has no cerafelt
combustion chamber.
SMOKE BAFFLES
Both the NH3 and the LFR furnaces have factory installed smoke baffles inside the radiator ducts.
NH3 - Check to ensure they have not become dislodged during shipping. They can be checked and
repositioned, if necessary, by reaching in through the breech pipe and pushing them down the tubes so
their stop tabs are flush against the welds.
LFR – The baffles are accessed through the front cleanout covers. No adjustment is normally necessary.
AIR FILTER RACK
NH3 - The air filter rack can be positioned on the left or right.
NH3-4 - The filter racks shipped with the furnace mount on both sides. Knockouts are provided at the
corners to cut the opening. The opening in the rack for sliding in the filters should face the front of the
furnace, unless there is there is enough clearance at the rear to change the filters without damage — at
least 24 inches.
LFR – See FIG. 12. The air filter rack can be positioned on the left or right, rear or base of the blower
compartment. The left and right openings are already cut; the one which is not in use is covered by a side
panel. If a rear or base opening is required it should be cut (17-3/4” x 13-3/4”). An additional side cover
can be obtained from Newmac to cover the unused side opening.
G
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FIG. 8. TYPICAL OIL PUMP FIG. 9. RIELLO SLEEVE POSITION
Insertion
to flange (TF)
Part No. 2030016
Riello Burner End Cone Protector
Setback 0-1/4" Gasket
Riello BF3
Riello 40F3

13
AIR FILTERS
Air filters should be inspected monthly and changed as required. At least two changes are usually
required during the heating season—more may be necessary if dusty conditions exist. Remove the filter
gently to prevent dust spillage. Install filters of the same size and type. Check filter markings for correct
orientation.
BLOWER REMOVAL
Disconnect power before removing or servicing the blower. Remove the burner and blower access panels
on the front of the furnace. Remove the nut and bolt that fastens the blower locking plate to the fan
partition and slide the blower locking plate out. The blower is mounted on slide rails which allow it to be
pulled forward for servicing. The wiring harness has sufficient length so that it can be removed without
disconnecting the motor leads. If the capacitor leads need to be removed, short the terminals with an
insulated screwdriver before handling.
BLOWER ADJUSTMENT
This unit is designed for a maximum temperature rise through the furnace of 85oF at a maximum external
static pressure of 0.50 inches of water column. However, due to the wide range of static pressures in duct
systems, it is the responsibility of the installer to verify that the temperature rise does not exceed 85oF. To
measure the actual temperature rise let the unit operate for at least five minutes. Insert a thermometer
and note the temperature of the warm air supply at a point at least 24 inches upstream from the heat
exchanger surface. Next measure the temperature at the return air grill and take the difference. Air
temperature rise can be lowered by increasing the blower speed; lowering the firing rate; or increasing
undersized supply and return air free area. The furnace will not operate properly and its life will be
decreased if insufficient air quantity passes over the heat exchanger. Similarly, too much air during
heating mode resulting in a temperature rise of less than 65oFmay cause heat exchanger degradation
due to condensation.
DIRECT DRIVE BLOWER
The installer should select the best speed tap for the specific installation. Recommended speed taps for
heating are given in TABLES 1 (NH3) AND 3 (LFR) GENERAL INSTRUCTIONS. The motor RPM will
vary over a range of static pressures. The blower heating speed can be changed by moving the black wire
harness lead to another speed tap on the terminal block located inside the blower compartment. Refer to
TABLES 2 (NH3) and 4 (LFR), BLOWER PERFORMANCE for airflow data. A second speed for non-
heating modes can be selected using the red wire harness lead. See FIG. 13 and 14 for WIRING
SCHEMATICS.
BELT DRIVE BLOWER – NH3 only
The air delivery (CFM) and temperature can be varied by adjusting the motor pulley. Closing the pulley
increases blower speed and decreases temperature rise. Opening the pulley decreases the blower speed
and increases the temperature rise. A 6 inch diameter blower pulley is required for 0.20 inch w.c. static
pressure. A 5 inch diameter pulley is used for 0.20 inch w.c. static pressure. Correct belt tension allows a
1 inch deflection midway between the pulleys. Too much tension will overload the motor—too little tension
will cause slippage.
Pulley combinations vary according to the fuel input and duct static pressure. Recommended pulley
combinations for heating mode are given in TABLE 1 (NH3), GENERAL INSTRUCTIONS. Refer to
TABLE 2 (NH3), BLOWER PERFORMANCE for air flow data.
An optional two-speed motor is available. The low speed can be used in non-heating mode. If the unit is
not factory wired for a two-speed motor, connect the red wire of the blower wire harness to the correct
motor lead. See FIG. 15 for STANDARD WIRING SCHEMATIC - BELT DRIVE and follow the motor
manufacturer’s instructions. Make sure replacement and retrofit belt drive motors meet or exceed the
OEM motor specifications. Two speed belt drive motors are available from Newmac.

14
MAINTENANCE & SERVICE
Maintenance and servicing must be done by a qualified burner technician or shortened furnace life and
poor efficiency may result. Under Tests and Observations and Requirements in CSA B139, the installer is
required to perform tests to ensure proper and safe operating conditions. Newmac requires the installer to
fill out the INSTALLER INFORMATION sheet found in this manual.
CLEANING
The heat exchanger should be inspected on an annual basis. If cleaning is required, remove the cleanout
cover. Use a wire brush or cleaning tool (available from Newmac) to loosen scale and soot and a vacuum
cleaner to remove it from the furnace. Replace gaskets if necessary before replacing the cleanout cover.
A layer of soot on the heat exchanger surfaces and firetube walls will reduce heat transfer and can
increase fuel consumption significantly. A 1/32” layer of soot acts as an insulator and can result in a 3%
increase in the amount of oil burned. A 1/16” layer may result in an average fuel loss of 8%.
When removing the burner, cleanout or cover panels take care not to damage gaskets.
NH3 FURNACE - take care not to break the combustion chamber. Removal of the combustion chamber
plate assembly allows a more thorough inspection and cleaning.
Replace all parts properly before starting the appliance.
WARRANTY
The following information is required to process warranty claims: owner’s name and address; furnace
serial number, model number, installation date; and installer’s name, address and phone number. A
“Returned Goods Number” must be issued by Newmac prior to acceptance of returned goods. Refer to
the LIMITED LIFETIME WARRANTY for terms and conditions.

15
IMPORTANT HOMEOWNER INSTRUCTIONS
1. AN EMERGENCY POWER SWITCH IS REQUIRED TO BE INSTALLED IN A
CONVENIENT LOCATION AT A SAFE DISTANCE FROM THE BURNER. THIS
SWITCH INTERRUPTS THE ELECTRICAL SUPPLY CIRCUIT TO THE APPLIANCE.
MAKE SURE YOU ARE AWARE OF ITS LOCATION AND THE OFF POSITION IS
CLEARLY MARKED.
2. KEEP THE SPACE CLEAR AROUND THE APPLIANCE WITHIN THE SPECIFIED
CLEARANCES TO COMBUSTIBLES.
3. ENSURE THE SUPPLY OF COMBUSTION AIR TO THE APPLIANCE IS NOT
OBSTRUCTED OR CUT-OFF.
4. MAINTAIN PROPER VENTILATION OF THE APPLIANCE AREA.
5. MAINTAIN FREE AIR FLOW THROUGH THE RETURN AIR REGISTERS. *
6. CONTACT SERVICE PERSONNEL BEFORE REMODELLING.
7. CONTACT SERVICE PERSONNEL FOR ANNUAL SERVICE AND MAINTENANCE.
8. CONTACT SERVICE PERSONNEL FOR AIR FILTER REPLACEMENT. *
9. CONTACT SERVICE PERSONNEL BEFORE AND AFTER EXTENDED PERIODS OF
APPLIANCE INOPERATION.
10. THE BURNER IS FULLY AUTOMATIC IN OPERATION. ALL ADJUSTMENTS
SHOULD BE MADE BY A QUALIFIED TECHNICIAN. DO NOT PUSH THE RESET
BUTTON MORE THAN ONCE.
CAUTION : DO NOT ATTEMPT TO START THE BURNER WHEN EXCESS OIL HAS
ACCUMULATED, WHEN THE APPLIANCE IS FULL OF VAPOUR, OR WHEN THE
COMBUSTION CHAMBER IS VERY HOT.
11. CAUTION : DO NOT TAMPER WITH THE APPLIANCE OR CONTROLS—CALL
YOUR SERVICE PERSONNEL.
12. DO NOT USE GASOLINE, CRANKCASE OIL, OR ANY OIL CONTAINING
GASOLINE
13. ALWAYS KEEP THE OIL SUPPLY VALVE SHUT OFF IF THE BURNER IS SHUT
DOWN FOR AN EXTENDED PERIOD OF TIME.
14. DO NOT START THE BURNER UNLESS THE BLOWER ACCESS DOOR IS
SECURED IN PLACE.
15. NEVER BURN GARBAGE OR PAPER IN THE HEATING SYSTEM, AND NEVER
LEAVE PAPER OR RAGS AROUND THE APPLIANCE.
* FURNACES ONLY

16
FIG. 10. TYPICAL OIL TANK PIPING INSTALLATIONS

17
FIG. 11. DIMENSIONS & CONTROL LOCATION – NH3

18
FIG. 12. LFR SET UP

19
FIG. 13. STANDARD WIRING SCHEMATIC - DIRECT DRIVE