Lochinvar PFN0751PM User Manual

500,000 to 1, 300,000 Btu/hr

Less Than 30 ppm NOx

Up to 87% Thermal Efficiency

High Efficiency
Commercial Gas
Water Heaters

The High-Efficiency, High-Output
Compact Water Heater

The Power-Fin was first
introduced nearly two decades
ago in 1986. Using time tested
fan assisted technology,
Lochinvar has raised the bar
again, offering you new models
with even more installation
flexibility than before.

What's more, unit inputs range as high as 1,300,000
Btu/hr but require just 4.6 sq. ft. of floor space. Only
the Power-Fin-with its high efficiency output-can offer
such heavyweight performance in a water heater so
compact. Plus, with new venting capabilities, the
Power-Fin is even more flexible in installation. And it
is easy to see how the Power-Fin is performing thanks
to a new digital control panel.

Outstanding Thermal Efficiency

Power-Fin water heaters offer up to 87% thermal
efficiency and a NOx rating of less than 30 ppm by
way of fan-assisted sealed combustion. This means
that 87¢ out of every fuel dollar goes into heating the
water - dramatically reducing operating costs of the
water heater while ensuring clean combustion.

The heat energy from the combustion process is
transferred to the water as it passes through the solid
copper finned tube heat exchanger. The sealed
combustion design eliminates external heat losses,
which means that the fuel dollars are used to heat
the water, not the mechanical
room. It also ensures the jacket
stays cooler, providing greater
safety and requiring less
clearance from combustibles

- zero clearance on each side.

First Power-Fin production model - 1986

DirectAire Vertical
w/ Sidewall Inlet*

Vents vertically up to 50
equivalent feet, and directly
draws combustion air 50
equivalent feet from a side wall.

Vertical

Vents vertically
through the roof.

Sidewall*

Vents horizontally
up to 50 equivalent
feet, using
Category IV
approved vent
material.

Direct Vent
Horizontal*

Vents horizontally up to 50
equivalent feet, using Category IV
approved vent material. Directly
draws combustion air 50
equivalent feet from a side wall.

Direct Vent
Vertical

Vents vertically up to 50
equivalent feet, and
directly draws combustion
air 50 equivalent feet
from the roof top.

DirectAire Horizontal
w/ Rooftop Inlet*

Vents horizontally up to 50
equivalent feet, using Category IV
approved vent material. Directly
draws combustion air 50 equivalent
feet from the roof top.

Power-Fin Venting Options

These new models also feature a more flexible two pipe, independent air inlet and exhaust vent piping. When
equipped with On/Off firing controls the Power-Fin utilizes Category I, Type B vent material in most cases.
When equipped with modulating fire controls the heater utilizes Category IV, AL29-4C corrosion resistant,
sealed vent pipe. Factory supplied vent kits are required for some venting configurations - see below.

Modulating (M9) models require Category IV vent material in any venting configuration.
On/Off (F9) models require Category IV vent materials when exhausting through a sidewall.
Consult I&O manual for exact specifications.
*Requires factory supplied vent kits

Exhaust Vent Reducer

Available for installation with Category IV vent systems, the Vent Reducer kits
allow the vent diameter of eachPower-Fin model to be reduced by as much as 45%.
The vent reducer is made from AL29-4C corrosion resistant material. Because the
reduction in vent size creates a “positive” pressure, all reduced vent systems are
classified as Category IV systems requiring corrosion resistant, sealed vent pipe.

Reduced Vent Sizes

PFN0501 7” to 4”
PFN0751 9” to 5”
PFN1001 10” to 6”
PFN1300 12” to 8”

Designed for Reliability

Lochinvar pioneered gasketless heat exchanger technology in 1989 with the Mini-Fin Boiler. Now we're bringing the same
advantages to our vertical chassis Power-Fin - giving you a one piece header design with no gaskets or o-rings to crack and leak.
This gasketless design provides enhanced reliability, improved durability and optimizes performance. We're so confident in its
performance, we back it up with a 5 year limited warranty against failure and a lifetime warranty against thermal shock.

The interior and exterior of all heat exchangers is

coated with a porcelain glass lining to prevent

external corrosion and provide

clean and clear potable water.

Copper-finned tubes are
extruded from a thick copper
tube, creating a heating transfer
ratio 9 times greater than

regular copper tube - allowing

maximum heat transfer.

Gasketless Heat Exchanger

To ensure fail-safe operation, every major function of the Power-Fin is automatically controlled and checked by a digital control
panel with advanced diagnostic features. The large display is easy to read and makes set up's a snap. The digital display, accurate
to +/- 1°F, indicates temperature while the LED indicators prove operation and status. This monitoring system not only warns
against failures, it can actually help to pinpoint the source of any problems, leading to faster solutions. In addition, all of the
components are field replaceable, so down time is reduced.

Modulation with 4:1 Turndown

and Category IV Venting

87% Thermal Efficiency

On/Off Firing

and Category I Venting

85% Thermal Efficiency

On/Off Firing – Standard

Modulating – Optional

Time Tested Performance wit

ASME
Copper-Finned
Tube Heat
Exchanger

Gasketless design
by the company
who pioneered the
gasketless heat
exchanger.
ASME construction
built to 160 psi
working pressure. Finned
copper tubes transfer heat nine times faster than
regular copper.

Combustion Air Filter

Creating cleaner combustion
the standard size filter is
easily replaced by removing
from back of the unit.

Service Friendly
Design

Power-Fin is designed for
easy service and
maintenance.

Slide Out
Control Panel

For easy and convenient
access to controls.

Firing Control System

On/Off (F9) firing is provided
as standard equipment.
Modulating (M9) with 4:1
turndown is available as
an option.

Hot Surface
Ignition

Eliminates the need
for a standing pilot.
Utilizes the latest
and most reliable
technology in
ignition and
flame rectification.

Fan Assembly

The Combustion Air Fan
draws a precise ratio of
gas and air into the
combustion chamber
based on heat load and

injects the mixture into

a 360° ceramic

burner, which
contributes to

the overall quiet
operation

of the appliance.

Field Electrical Connections

All models require (2) two 120V,
15 Amp single phase connections for
heater and pump operation. Single
30 Amp service may be used.

360° Ceramic Burner

At the center of the combustion
chamber is the highly flexible and
efficient Power-Fin ceramic burner. The
new ceramic burner allows for perfectly
even gas and air distribution which
results in a NOx Rating of less than 30
ppm - far exceeding the most stringent
air quality standards. What's more - the Power-Fin burner is
perfect in installations with low supply gas pressure, operating
without hesitation as low as four inches of water column.

Ultimate Flexibility

Lochinvar's unique "engineered systems" approach to
water heating provides the flexibility to match the heating
unit (or units) with the exact size and capacity storage
tank that is needed for any given application.

For example: Use a low output Power-Fin with a large
tank for short term, high draw situations, or team a

high-output water heater with a small tank for applications
where the demand is almost constant. Whatever the need,
Lochinvar has a Lock-Temp tank to match it-from our
119 gallon vertical to the 2500 gallon horizontal model.

Each package system can be custom-configured to the
exact specifications and available space of each job.
These Power-Fin package systems are pre-engineered,
pre-piped, pre-tested and shipped pre-assembled on
"I-Beam" skids ready for installation.

Package System Configurations & Dimensions

V1 Configuration H1 Configuration H2 Configuration

H3 Configuration

HORIZONTAL TANK DIMENSIONS

Gallons H

T WT DT Weight

300 50-1/2 ” 78-1/4” 42-1/4” 1,700
400 50-1/2 ” 102-1/4” 42-1/4” 2,250
500 56-1/2 ” 90-3/4” 48-1/4 ” 2,450
600 56-1/2 ” 114-1/4” 48-1/4 ” 3,350
700 56-1/2 ” 130-1/4” 48-1/4 ” 4,000

800 62-1/2 ” 124-1/4” 54-1/4 ” 4,800
1,000 62-1/2” 138-1/4” 54-1/4 ” 5,100
1,250 68-1/2” 130-1/4” 60-1/4 ” 5,900
1,500 77-1/2” 126-1/4” 66-1/4 ” 6,500
2,000 80-1/2 ” 138-1/4” 72-1/4 ” 9,000
2,500 86-1/2 ” 144-1/4” 78-1/4 ” 10,000

VERTICAL TANK DIMENSIONS

Gallon H

T Dia. Weight

119 62-1/2” 28” 345
200 77-1/4” 32” 600
257 92” 34” 902
318 81” 40” 993
432 81” 46” 1,269
504 92” 46” 1,373

NOTE: Add heater dimensions to tank dimensions to get
overall package dimensions or consult factory if
measurements are critical.

All package systems are skid mounted.

H3 configuration is offered with Square Jacketed Tank only.

V1, H1 & H2 Configurations are standard with Round Jacketed Tanks

Power-Fin water heaters are custom packaged with our

Lock-Temp tank(s) to meet your exact specifications.

All package systems are completely pre-piped,

pre-tested and shipped on a pre-assembled

I-beam skid – ready for installation.

28"

Power-Fin® Water Heater Dimensions & Specifications

Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: [phone]

www.Lochinvar.com

PF-09 (Replaces PF-09 2/06)

1/07-Printed In U.S.A.

Standard Features

• Up to 87% Thermal Efficiency

• Aquastat with Adjustable Differential

•

Sequential & Diagnostic Control Panel

• Radial Ceramic Burner

• Digital Display with Alarm Status LEDs

• Low NOx Operation Exceeds the most

Stringent Air Quality Requirements

• ASME Copper Finned Tube Heat Exchanger

• Gasketless Heat Exchanger Design

•

160 psi Working Pressure

•

All Bronze Circulating Pump

• ASME Temperature & Pressure Relief Valve

• Remote Tank Thermostat

•

Glass-Lined Water Surfaces

• Digital Temperature Gauges

• Combustion Air Filter

•

Slide Out Control Panel

• Redundant Gas Valves

• Hot Surface Ignition

•

Pump Delay

• Freeze Protection

• Zero Clearance to Combustible Materials

•

Adjustable High Limit w/ Manual Reset

• Flow Switch

• Flame View Port

•

Small Footprint

• 24 Volt Control System

• 5 Year Limited Warranty

on Heat Exchanger
(See warranty for details)

Optional Equipment

• Alarm Bell

• Contacts for Air Louvers

• Contacts on any Failure

• Cupro-Nickel Heat Exchanger

• High and Low Gas Pressure Switch

• Low Gas Pressure Switch

• Low Water Cut-Off w/ Manual Reset

• MP

2

Sequencer (F9 models only)

• Harmony Sequencer (M9 models only)

• Vent Diameter Reducer

Available Firing Systems

F =On/Off
M=Modulating

F9 HSI (Standard)
M9 Hot Surface Ignition

with Modulation
F/M13 GE GAP/FM/IRI
F/M7 California Code

GPH @ Shipping

Model Btu/Hr 100°F Rise D Gas Air Vent Wt.

Number Input (F9) (M9) A (F9) (M9) E F G H I J Conn. Inlet Size (lbs)

PFN0501PM 500,000 515 527 44-1/2” 5-1/4” 3-1/4” 7-3/4” 11-1/4” 33-3/4” 2-1/4” 23-1/4” 6-3/4” 1” 5” 7” 571
PFN0751PM 750,000 773 791 52-1/4” 5-1/4” 3-1/4” 7-3/4” 11-1/4” 41-1/4” 9-3/4” 30-3/4” 7” 1-1/4” 5” 9” 620
PFN1001PM 1,000,000 1,030 1,054 59-1/4” 4-1/4” 3-1/4” 7-3/4” 11-1/4” 48-1/2” 16-3/4” 37-3/4” 7-1/4” 1-1/4” 6” 10” 669
PFN1300PM 1,300,000 1,323 1,371 67-3/4” 4-1/4” 3-1/4” 7-3/4” 19-1/2” 57” 25-1/4” 46-1/4” 8-1/4” 1-1/4” 6” 12” 718

Notes: Change "N" to "L" for LP Gas Model. No deration on LP Gas Models.

Water Connections are 2-1/2" on 6" centers. Performance Data Based on Manufacturer Test Results.

FOR EASE IN ORDERING

BY MODEL NUMBER

PF N 0501 PM F9

This is a 500,000 Btu/hr

natural gas Power-Fin water

heater with F9 firing controls.

Firing

Controls

Pump

Mounted

Natural Gas

Model

MBH Input