Laars newport NP 75 Manual

Installation, Operation and Maintenance Instructions Document 1100B
Installation,
Operation and
Maintenance
Instructions for
Newport
Oil Fired Boiler
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in boiler installation and maintenance. Improper installation and/or operation could create
carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.
Improper installation and/or operation will void the warranty.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or
any other appliance.
Installation and service must be performed by a qualified installer, service agency, or fuel oil
supplier.
52-206B
A subsidiary of BRADFORD WHITE Corporation

Page 2 LAARS HEATING SYSTEMS
TABLE OF CONTENTS
SECTION 1.
General Information
1A. Boiler Installation .......................................... 3
1B. Freight Claims .............................................. 3
1C. Boiler Location .............................................. 3
1D. Boiler Clearances (to combustibles) ............. 3
1E. Floor ............................................................. 3
1F. Combustion and Ventilation Air ..................... 3
1G. Chimney and Draft Requirements ................. 3
1H. Jacket (normally fitted).................................. 3
1I. Oil Burner (normally fitted) ............................ 3
1J. Boiler Controls (normally fitted) ..................... 3
1K. Oil ................................................................. 3
1L. Oil Storage and Pipe Layout ......................... 3
1M. Electrical Wiring ............................................ 4
1N. Operation
(Honeywell L.8124A aquastat relay) ............. 4
1O. Domestic Water Piping ................................. 4
1P. Cleaning the Boiler ....................................... 4
1Q. Cleaning the Chimney................................... 4
1R. Servicing the Burner ..................................... 5
1S. Maintenance of the Tankless Coil ................. 5
SECTION 2.
Part Numbers
................................................................... 11

Trianco Newport Page 3
SECTION 1.
General Information
These boilers have been designed and
constructed according to ASME codes using heavy
gauge steel tubes and boiler plate.
The reliable heat exchanger incorporates special
flue baffles to assure quiet and efficient operation and
a purpose designed ceraform combustion chamber
minimizes base loss and also provides a tight
enclosure with the heat exchanger.
The domestic hot water coil is located at the top
of the boiler in the hottest zone for an ample supply of
hot water and a unique feature of its attachment is the
raised coil flange which allows the use of clamping
bolts rather than studs, thereby eliminating water leaks
caused by broken studs.
The complete unit comes pre-assembled for easy
installation and is encased by a fully insulated baked
enamel jacket.
1A. Boiler Installation
For recommended installation practice reference
should be made to the National Fire Protection
Standard for Oil Burning Equipment (NFPA 31 -
Latest Edition).
1B. Freight Claims
Inspection should be made of boiler and its
components for damage upon arrival. Any claims for
damage should immediately be filed against the
carrier by the consignee.
1C. Boiler Location
The boiler should be positioned as near to the
chimney as possible and have a minimum smoke pipe
connector length of 18"(457mm).
Caution
Newport boilers must not be directly connected to a
heating system using oxygen permeable tubing (see
warranty). Use a water to water heat exchanger
between boiler and system to prevent corrosion.
1D. Boiler Clearances (to combustibles)
Top - 6" (152mm) Front - 24" (610mm)
Rear - 6" (152mm) Sides - 6" (152mm)
1E. Floor
The boiler must be mounted on a
noncombustible masonry or cement floor with no
combustibles underneath.
1F. Combustion and Ventilation Air
To insure an adequate supply of fresh air for
combustion and ventilation an inlet and outlet opening
should be provided at floor and ceiling level. Each
opening must have a minimum of one square inch
(16.5 sq. cm) of free area for every 1,000 BTU/h
(293kW) of input or 140 square inches (903 sq. cm)
per one gallon (3.785L) of oil burned per hour. The
openings must not be in a position liable to blockage.
1G. Chimney and Draft Requirements
To assure the safe and proper operation of the oil
burner the boiler must be connected to a chimney
having sufficient draft at all times to evacuate the flue
gases to atmosphere. A draft regulator must be
installed in the smoke-pipe as near to the flue as
possible and adjusted to achieve an overfire draft of
0.01 ins. W.C.
1H. Jacket (normally fitted)
If not fitted, assemble panels in accordance with
instructions in Figure 4.
1I. Oil Burner (normally fitted)
If not fitted, insert burner tube into boiler so that
it is approximately ¼" (6mm) from inside wall of
ceraform chamber, then clamp mounting flange and
bolt up to front-plate (see Figure 3).
The burner should be wired and connected to the
oil line in accordance with the manufacturer’s
instructions.
1J. Boiler Controls (normally fitted)
If controls are supplied separately, fit them to the
boiler in the positions shown in Figure 3, with jacket
in place.
Circulator - 1¼" return tapping at front of boiler.
Tridicator - temp/press. gauge.
Relief Valve - Provide ¾" tee and auto vent as
shown on front page for air elimination.
Aquastat Relay - L8124A - ¾" tapping in coil
plate.
Fit a drain valve (not supplied) in a tee at
hydronic return connection and check all connections
are made water tight.
1K. Oil
USE ONLY No. 2 HEATING OIL. Do not use
gasoline, crankcase draining or any oil containing
gasoline.
1L. Oil Storage and Pipe Layout
Storage Tank: Consult local fire and building
codes for acceptable fuel storage methods in your area.
Fuel Line: A single pipe system of not less than
3/8" OD copper tubing is recommended when fuel

Page 4 LAARS HEATING SYSTEMS
storage level is not below the fuel unit. A two pipe
system of not less than 3/8" OD copper tubing is
recommended when lowest fuel level is below but not
more than 8 feet below fuel unit.
Important: Refer to burner (pump) instructions
for detailed fuel line and pump usage information. All
installations must conform to local and national codes.
See Figures 5A and 5B.
Figure 5A One-pipe system - pipe and tank layout.
Figure 5B Two-pipe system - pipe and tank layout.
1M. Electrical Wiring
All wiring must comply with the National
Electrical Code, NFPA 70, local codes and ordinances
regarding wire size, type of insulation and enclosures
etc. (see Figure 6).
1N. Operation
(Honeywell L8124A aquastat relay)
A call for heat from the room thermostat causes
the relay to “make “ the burner circuit and also feed
the circulator provided the boiler water temperature is
above the low limit setting (usually 190°F [88°C] to
210°F [99°C]). The burner and circulator then
continue to run until the room thermostat is satisfied.
A high limit switch shuts off burner in the event
of water temperature exceeding the high limit setting,
usually 20°F (-7°C) to 30°F (-1°C) above the low limit
setting.
The low limit switch and circulator maintain
boiler water temperature for domestic hot water
services and prevents circulation of heating system
water if domestic water is not hot enough.
1O. Domestic Water Piping
1. Connect anti scald tempering valve (12) “HOT”
port to hot water outlet from unit. This valve
should be mounted 3" (76mm) to 6" (152mm)
below the outlet and set for 120° F mixed
delivery temperature or as local codes dictate
(see Figure 1).
2. Connect gate or shutoff valve (13) to anti scald
tempering valve (12) “MIX” port, and another to
the cold water inlet.
3. Connect pressure relief valve (11) (if required
by codes), maximum 150 PSI as close to the unit
as possible. No other valves or restrictions may
be installed between the DHW coil and the
relief valve.
(DO NOT USE A TEMPERATURE/
PRESSURE RELIEF VALVE AS THIS IS NOT A
STORAGE HOT WATER HEATER).
WARNING
Flue gases are dangerous - do not operate boiler if
there is an escape of flue gas. Call a qualified
serviceman and have the entire flue and venting
system inspected.
1P. Cleaning the Boiler
To maintain the high thermal efficiency and a
long life from your boiler, it should be cleaned at least
once a year, preferably at the end of the heating
season. This is particularly important as rusting can
occur when the boiler is idle.
It is recommended that a service contract be
arranged with a properly equipped serviceman who
will be able to do the job efficiently and without mess.
1. Switch off electrical supply to the boiler.
2. Remove smoke-pipe from boiler.
3. Remove top jacket panel.
4. Unscrew the securing nuts and remove flue
collector.
5. Remove baffles from flue tubes.
6. Remove burner by unscrewing the flange
mounting nuts.
7. Remove soot and scale deposits from tubes with
a flexible wire brush, taking care not to damage
“ceraform” combustion chamber, below outer
tubes.
8. Vacuum out accumulated deposits from
combustion chamber through burner port, taking
care not to damage “ceraform” combustion
chamber, below outer tubes.
9. Replace all parts, ensuring flue-baffles are
correctly located. Ensure flue collector and
smoke-pipe are tightly sealed.
1Q. Cleaning the Chimney
Sweep all soot deposits from chimney and
smoke-pipe once a year, preferably at the end of the
heating season. It is also advisable to inspect the
chimney and smoke-pipe at the beginning of heating
season as birds may have built their nest inside or
other material may be causing a blockage.
B
O
I
L
E
R
11
12
13
3 - 6"
(76mm - 152mm)
Figure 1. Domestic water piping.

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TANKLESS DOMES-
TIC
HOT WATER COIL
½" NPT
TRIDICATOR
FLAME VIEWING
PORT
Tapping NPT
Tankless Coil ½"
Tridicator ¼"
Hydronic Return 1¼"
Hydronic Supply 1¼"
Aquastat Well ¾"
Relief Valve Fitting ¾"
Figure 2. Components Location.
PRESSURE RELIEF VALVE
DRAIN (PIPE IN ACCORDANCE
WITH EXISTING REGULA-
TIONS)
AIR VENT
SUPPLY PIPE
AQUASTAT RELAY
L8124A ¾" NPT
WIRING CONDUIT
CIRCULATOR 1¼" NPT
BURNER

Page 6 LAARS HEATING SYSTEMS
FRONTSIDE
Figure 3. Dimensions.
1R. Servicing the Burner
This should only be carried out by a trained and
licensed service technician in accordance with the
burner maker’s instructions.
1S. Maintenance of the Tankless Coil
After several years of use, the water flow
through the coil may become restricted by mineral
deposits from the water. Mild accumulations may be
removed by an acid treatment but your servicing
company can advise on the most satisfactory method
of cleaning or whether a replacement coil is
necessary.
1T. Coil Removal
1. Switch off electrical supply and turn off water to
boiler.
2. Valve off zones and drain boiler and DHW coil.
3. Disconnect the pipe connections to the coil.
4. Unscrew the eight retaining bolts from coil plate.
5. Pull out coil and clean or fit replacement as
necessary.
6. Ensure gasket makes a water tight seal.
7. Refill boiler, open valves and check for leaks.
Domestic
Water In
(Cold)
Domestic
Water Out
(Hot)

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**NOTE: A LOW FIRING RATE BAFFLE MUST BE INSTALLED PRIOR TO SHIPMENT.
Dimensions REF NP 75 NP 85 NP 100 NP 110 NP 125 NP 135 NP 150
inches mm inches mm inches mm inches mm inches mm inches mm inches mm
Jacket Height A 33 838 35½ 902 35½ 902 35½ 902 41 1041 41 1041 41 1041
Jacket Width B 19¼ 489 19¼ 489 19¼ 489 19¼ 489 20½ 521 20½ 521 20½ 521
Jacket Length C 20 508 20 508 20 508 20 508 21½ 546 21½ 546 21½ 546
Return Tapping Height D 19½ 495 19½ 495 19½ 495 19½ 495 22 559 22 559 22 559
Supply Tapping E 31½ 800 33½ 851 33½ 851 33½ 851 638 965 38 965 38 965
Coil Supply Height F 25 635 27½ 699 27½ 699 27½ 699 31½ 800 31½ 800 31½ 800
Smoke Outlet Diameter G 6 152 6152 6" 152 6152 6152 6152 6152
Burner Center Line H 8½ 216 8½ 216 8½" 216 8½ 216 10½ 267 10½ 267 10½ 267
Tankless Coil NPT ½ ½ ½ ½ ½ ½ ½
Return NPT 1¼ 1¼ 1¼ 1¼ 1¼ 1¼ 1¼
Supply NPT 1¼ 1¼ 1¼ 1¼ 1¼ 1¼ 1¼
Specifications
Firing Rate GPH 0.75 0.85 1.00 1.10 1.25 1.35 1.50
Input MBTU/hr (kW) 85 25 103 30 120 35 133 39 150 44 160 47 177 52
Output MBTU/hr (kW) 74 21 90 26 105 30 116 34 130 38 139 40 154 48
Efficiency % AFUE 83.20 83.60 83.10 83.10 83.70 83.00 83
Net Stack Temperature °F (°C) 375 191 312 156 353 178 371 188 351 177 386 197 417 214
Shipping Weight - lbs. (kg) 285 129 310 141 310 141 310 141 368 167 368 167 368 167
Water Content - gallons (L) 9.75 36.9 11.6 44 11.6 44 11.6 44 15.4 58 15.4 58 15.4 58.2
Coil Size (GPM) 4 4 5 5 5 5 5
Becket Burner Specifications
AFG BURNER PURCHASED TO BECKETT SPEC. #TRI-801 FOR NP UNITS
Boiler Model **NP 75 NP 85 NP 100 NP 110 NP 125 NP 135 NP 150
Burner AFG AFG AFG AFG AFG AFG AFG
Nozzle .75 x 70° A .85 x 70° A 1.00 x 80° A 1.10 x 70° A 1.25 x 80° A 1.35 x 80° A 1.50 x 80° A
Manufacturer Delevan Delevan Delevan Delevan Delevan Delevan Delevan
Static Plate 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8 3 3/8
Head Type F3 F3 F3 F3 F6 F6 F6
Pump Pressure 100 100 100 100 100 100 100

Page 8 LAARS HEATING SYSTEMS
Instructions
1. Pre-assemble L/H side (1) and R/H side (2) to front panel (3) with screws.
2. Slide assembled jacket over boiler and secure side panels to base tray.
3. Fix rear panel (4) to sides.
4. Adjust corner brackets (5) on heat exchanger so they touch inside of jacket and secure.
5. Fit top panel (6) over jacket.
Figure 4. Jacket assembly.

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WARNING:- The height should not exceed 13 feet (4m)
WARNING:- The vacuum must not exceed 11.44 HG. (11.44
inches of Mercury). Burner is shipped from the factory set up
for two pipe system.
Important:- An external filter must be placed in the fuel line
between the fuel tank and the burner pump.
Two-Pipe
System
One-Pipe
System
Figure 5. Piping information.
PIPE LENGTHS
"H"
One Pipe Gravity System
3/8" O.D. 1/2" O.D.
ft. mft mft m
000000
1½ 0.5 33 10.1 65 19.8
30.9 65 19.8 130 39.6
51.5 130 39.6 260 79.2
6½ 2195 59.4 325 99
PIPE LENGTHS
"H"
Two Pipe Gravity System
3/8" O.D. 1/2" O.D.
ft. mft mft m
000000
1½ 0.5 115 33.0 330 100.6
30.9 100 30.5 330 100.6
51.5 80 24.4 330 100.6
6½ 250 15.2 295 89.9
9½ 2.9 25 7.6 100 30.5
11 3.4 20 6.1 65 19.8
Air vent
Fill pipe
Valve
Figure 5A
1¼" min.
Oil tank
"H"
Filter
"P" Burner Boiler
Air vent 1¼" min.
Fill pipe
Oil
tank
Figure 5B
Valve
Filter
Burner
Boiler
"H"

Page 10 LAARS HEATING SYSTEMS
Figure 6. Wiring diagram.
Power supply provides disconnect means & overload protection as required.
24V
Room Thermostat
1K
L1 (Hot)
Power Supply
120V
L2
Circulator
Switch
Low Limit
Circulator
Hi Limit
1K2 Oil Burner
Relay
Heating Circulator
AQUASTAT RELAY L8124A
1K1
WIRING ARRANGEMENT FOR “NP” BOILER
CONTROLLING OPERATION OF BOILER AND CIRCULATOR

Trianco Newport Page 11
SECTION 2.
Part Numbers
Part Number Description Size
51-002 Boiler Body................................... 85/115
51-056 Base Assembly (after 1990 - ....... 85/115
includes 51-058 panel) ...........................
2500-018 Burner Panel Assembly ............... 85/115
(before 1990)
51-058 Burner Panel Assembly ............... 85/115
(after 1990) use with P/N 51-056 ...........
51-090 Flue Cover Assembly .................. 85/115
51-108 Front Panel Assembly ................. 85/115
51-116 Left Panel Assembly .................... 85/115
51-124 Right Panel Assembly ................. 85/115
51-128 Top Panel Assembly .................... 85/115
51-136 Rear Panel Assembly .................. 85/115
51-088 Chamber ...................................... 85/115
51-052 Baffle, 85-115 (14), 125-155 (18), ...... All
175-200 (30)
53-002 Boiler Body................................. 125/155
53-056 Base Assembly (after 1990 - ..... 125/155
includes 53-058 panel
2500-020 Burner Panel Assembly ............. 125/155
(before 1990)
53-058 Burner Panel Assembly ............. 125/155
(after 1990) use with p/n 53-0560
Part Number Description Size
53-090 Flue Cover Assembly ................ 125/155
53-108 Front Panel Assembly ............... 125/155
53-116 Left Panel Assembly .................. 125/155
53-124 Right Panel Assembly ............... 125/155
53-128 Top Panel Assembly .................. 125/155
53-136 Rear Panel Assembly ................ 125/155
53-088 Chamber .................................... 125/155
55-002 Boiler Body................................. 175/200
55-056 Base Assembly (after 1990 - ..... 175/200
includes 55-058 panel)
55-502 Burner Panel Assembly ............. 175/200
(before 1990)
55-058 Burner Panel Assembly ............. 175/200
(after 1990) use with p/n 55-056
55-090 Flue Cover Assembly ................ 175/200
55-108 Front Panel Assembly ............... 175/200
55-116 Left Panel Assembly .................. 175/200
55-124 Right Panel Assembly ............... 175/200
55-128 Top Panel Assembly .................. 175/200
55-136 Rear Panel Assembly ................ 175/200
55-088 Chamber .................................... 175/200