Lochinvar CPN0991 User Manual

High Efficiency In A Space-Saving Design

Gas Heaters
For Commercial
Pool Applications

From 500,000 to 2,070,000 Btu/hr

Up to 89% Thermal Efficiency

Less Than 20 ppm NOx Rating

Thermal efficiency is higher...while
footprint and vent sizes are smaller

®

Lochinvar’s Copper-Fin

2

line of high efficiency
commercial gas heaters gives you all the advantages
of copper-finned tube heat exchanger technology plus the
benefits of a sealed combustion system. Every Copper-Fin
model offers four major advantages: higher efficiency,
smaller footprint, smaller vent diameters and a wide
variety of venting options.

Outstanding thermal efficiency

Copper-Fin2 gas heaters offer a remarkably high 89%
thermal efficiency. This means that 89¢ out of every fuel
dollar goes into heating the water, dramatically reducing
the operating cost of the equipment. Copper-Fin
this efficiency through the combination of an advanced
fan assisted combustion system and an exclusive
gasketless copper-finned tube heat
exchanger. A time tested
and proven combination.

The heat energy from the
combustion process is efficiently
transferred into the water as it passes
through the solid copper-finned tube heat exchanger. The
sealed combustion design of the Copper-Fin
external heat loss. This means that the energy dollars heat
the water, not the mechanical room. It also ensures that the
jacket stays cooler, providing greater safety and requiring
less clearance from combustible walls - just 1” in most
cases.

2

achieves

2

reduces

Commercial Gas Heaters

Meets the toughest air quality standards

Because of our unique fan-assisted

combustion process, the Copper-Fin2
exceeds today’s toughest NOx emissions
requirements. An independent certification
laboratory test gave us a rating of less than

20 ppm —corrected to 3% O2. And less NOx

2

means a cleaner environment.

Compact design - for installation ease

The Copper-Fin2 is compact
enough to fit through
standard 36”
doorways with
ease. Even
our
2 million
Btu/hr
model is
only 33-1/2”
wide. This

space-

saving
design frees
up more
space in
the mechanical
room.

And our optional Lochinvar Stack
Frame lets you put two units in the
footprint of just one. See our Stack
Frame literature for more details.

(Indoor use only)

Automatic pumped bypass standard

All Copper-Fin2 heaters are equipped with an automatic
high temperature CPVC bypass to ensure proper flow and
return water temperatures to the heater. This results in
longer equipment life and trouble free operation. The CPVC
bypass is provided as standard equipment in a horizontal

configuration.
A vertical
configuration
is also available
offering the
flexibility to
meet mechanical
room space
requirements
or piping
constraints.

Making installation easier...for less

High-efficiency, fan-assisted combustion means you can
use a smaller diameter vent stack — up to 8” smaller than
typically required. This makes installation less expensive
and more flexible.

Vent Cost Savings

Btu/hr CONVENTIONAL COPPER-FIN2
INPUT VENT SIZE VENT SIZE $ S

500,000 10” 6” $ 657
650,000 12” 8” $ 731
750,000 14” 8” $ 1,450
990,000 16” 10” $ 1,790
1,260,000 16” 12” $ 1,463
1,440,000 18” 12” $ 2,432
1,800,000 20” 14” $ 3,526
2,070,000 22” 14” $ 3,738

*Comparison based on 25´ vent system using Type “B” double wall vent material,

storm collar and vent cap.

AVINGS*

The Proven Performers

Service & installation ease

All Copper-Fin2 models offer a service friendly design with
gas inlet and shutoff cocks, electrical and EMS connections
toward the front of the unit, and a slide out control panel. The
referenced gas valve design improves operational performance
by monitoring the pressure in the sealed combustion chamber to

maintain the optimum air/
fuel mixture.

All models feature alternate
air inlet connections
for greater installation
flexibility. This field
convertible option provides
the ability to connect the

air inlet on either the right
side or the rear of the unit. And the built-in air inlet filter reduces
maintenance and improves performance by trapping dust and
airborne particulates that can foul the burners and blowers.

You’ll also save
installation time and
expense with Lochinvar’s
direct vent option,
featuring our innovative
Aire-Lock™ combustion
system. The Aire-Lock™
direct vent option allows
the installer to vent the
products of combustion
directly through a side

wall without the use of
an auxiliary power vent cap. By using approved vent material
and an air intake pipe, this option effectively “detaches” the unit
from the mechanical room by pulling all combustion air from
outside the building and venting all combustion by-products
outside through a side wall. A feature that can really simplify an
installation while reducing overall installed costs.

The enhanced operator interface panel provides fingertip
control of the built-in digital temperature controller and can

monitor up to four
temperature readouts;
inlet, outlet, pool and
system temperature with
the ability to adjust pool
temperature. Its refined
user friendly design
simplifies service by
providing “slide-out”
access to electronics
and controls.

Flexible Venting Options

Conventional

Vents into conventional
flue or vent breaching using
Type B double wall vent.

DirectAire Vertical
with Sidewall Inlet

Draws fresh air from
outside and vents through
conventional vertical flue.

Sidewall (CP501 - 751)

Draws fresh air from
inside the room. Vents
to 50 equivalent feet
through the outside wall
without the need for a
powered sidewall cap.

up

directly

Power DirectAire
Horizontal

Draws fresh air from outside
and vents through sidewall
using optional powered vent
cap.

Outdoor

Requires optional outdoor
vent cap. Use when indoor
space is a problem or if
outdoor location gives better
access.

DirectAire Vertical

Draws fresh air from
outside and vents through
conventional vertical flue.

Aire-Lock Direct Vent

Utilizes sealed Aire-Lock
combustion system to draw fresh
air 50 equivalent feet from a
sidewall. Vents horizontally up
to 50 equivalent feet through
the sidewall using Category IV
approved vent material.

Power Sidewall

Vents directly through
the outside wall using an
optional powered sidewall
cap. Ideal when a vent stack
is not practical.

Commercial Gas Heater Dimensions & Specifications

GAS

Model Btu/hr Btu/hr Vent Air Gas Shipping
Number Input Output A B C D E F G H J K L M N P Q R Size Inlet Conn Weight

CPN501 500,000 445,000 31-1/2” 45-1/2” 22-1/4” 38” 20-1/4” 26-1/2” 29” 23” 7” 12-3/4” 38” 38” 8” 9” 41-1/4” 9-3/4” 6” 6” 1-1/4” 480
CPN651 650,000 578,500 31-1/2” 56-3/4” 22-1/4” 38” 20-1/4” 26-1/2” 29” 23” 8-1/2” 12-3/4” 38” 38” 8” 9” 41-1/4” 9-3/4” 8” 8” 1-1/4” 550
CPN751 750,000 667,500 31-1/2” 64” 22-1/4” 38” 20-1/4” 26-1/2” 29” 23” 8-1/2” 12-3/4” 38” 38” 8” 9” 41-1/4” 9-3/4” 8” 8” 1-1/4” 605
CPN0991 990,000 881,100 36” 48-1/4” 33-1/2” 48-1/4” 26-3/4” 30-1/4” 34” 27” 8” 18-1/4 “ 42” 48” 9-1/4” 13” 52” 13-1/4” 10” 10” 2” 930
CPN1261 1,260,000 1,121,400 36” 58-1/2” 33-1/2” 48-1/4” 26-3/4” 30-1/4” 34” 27” 9” 18-1/4 “ 42” 48” 9-1/4” 13” 52” 13-1/4” 12” 12” 2” 995
CPN1441 1,440,000 1,281,600 36” 68-3/4” 33-1/2” 48-1/4” 26-3/4” 30-1/4” 34” 27” 9” 18-1/4 “ 42” 48” 9-1/4” 13” 52” 13-1/4” 12” 12” 2” 1,130
CPN1801* 1,800,000 1,602,000 36” 82-1/4” 33-1/2” 48-1/4” 26-3/4” 30-1/4” 34” 27” 10” 18-1/4 “ 42” 48” 9-1/4” 13” 52” 13-1/4” 14” 12” 2” 1,285
CPN2071* 2,070,000 1,842,300 36” 92-1/2” 33-1/2” 48-1/4” 26-3/4” 30-1/4” 34” 27” 10” 18-1/4 “ 42” 48” 9-1/4” 13” 52” 13-1/4” 14” 12” 2” 1,400

Notes: Change ‘N’ to ‘L’ for LP gas models. . No deration on LP models.
Water connections for models CP501-751 are 2” flanged. Water connections for models CP991-2071 are 2-1/2” flanged
Performance data is based on manufacturer test results. *Cupro Nickel Heat Exchanger is standard on these models.

Standard Features

• Up to 89% Thermal Efficiency

• Digital Operator Interface

• Less Than 20 ppm NOx Rating

• ASME Gasketless Copper Finned-Tube

Heat Exchanger (CP501-1441)

• ASME Gasketless Cupro Nickel Finned-Tube

Heat Exchanger (CP1801-2071)

• High Temperature CPVC Automatic Pumped Bypass

• Flanged Inlet/Outlet Fittings

• Loch-Heat™ Ceramic Tile Sealed

Combustion Chamber

• Combustion Air Filter

• Field Convertible Air Inlet Connection

• Programmable Temperature Setpoint

• Inlet & Outlet Temperature Sensor

• Pool Temperature Sensor

• Hot Surface Ignition System

• Stainless Steel Burners

• Referenced Gas Valves

• ASME 160 psi Working Pressure

• 110°F Safety Limit

• 24V Controls

• Flow Switch

• Air Pressure Switch

• Remote Control Compatible

• Adjustable High Limit w/ Manual Reset

• 150 psi ASME Temperature and Pressure

Relief Valve

• Slide-Out Control Panel with

Plug-In Components

• 5-Year Limited Warranty on Heat Exchanger

(See warranty for details)

Optional Equipment

• Alarm Bell

• Cupro Nickel Heat Exchanger (CP501-1441)

• High Gas Pressure Switch w/ Manual Reset

• Low Gas Pressure Switch w/ Manual Reset

• Stack Frame (Horizontal Bypass Only)

• Pump Delay

• Pump Purge w/ Maintenance Timer

• Vertical Mounted Pumped Bypass

Available Firing Systems

F9 Electronic Control with
Hot-Surface Ignition
(Standard)
F7 California Code

Venting Options

• Aire-Lock Direct Vent

Sealed Combustion

• Conventional

• DirectAire® Vertical

• DirectAire® Vertical

w/ Sidewall Inlet

• Outdoor

• Powered DirectAire® Horizontal

• Powered Sidewall

• Sidewall (CP501-751)

Registered under patent #5,989,020

FOR EASE IN ORDERING

BY MODEL NUMBER

CP N 501 F9

MODEL

FUEL TYPE

This heater is 500,000 Btu/hr natural gas

Copper-Fin

2

pool heater. It has F9 firing controls.

Btu/hr

INPUT

CONTROLS

FIRING

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

CPN-11 (Replaces CPN-10)

www.Lochinvar.com

FG-5M-1/11 Printed in U.S.A.