Lochinvar Copper Fin Boilers 010 36 68 3 4 33 1 2 15 10 12 1050 Users Manual

Copper-Fin boilers CBN1797 1795 81% 1 CBN-07

010 36 68-34 33-12 15-34 10-12 10-12 33-34 2 12 1050 to the manual f6e79f30-ad50-45fc-acbb-d0b34d74de46

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Copper-Fin®
Commercial Gas
Boilers
Energy Efficient, Cost Effective Boilers
Lochinvar first introduced Copper-Fin technology to the boiler
industry some 50 years ago. Since then, we’ve continued to refine
and perfect it - adding advanced fan-assisted combustion, hot
surface ignition, a unique gasketless copper finned tube heat
exchanger and highly efficient insulating materials.

Installation Flexibility and Cost-Savings
With compact sizes that use less floor space than ever before,
all Copper-Fin units are narrow enough to fit through a standard
36” doorway – an advantage most commercial boilers can’t provide.
Plus, thanks to special insulating materials, Copper-Fin units require
only 3” clearance from combustible walls. What’s more, our
Stack Frame allows you to install two units in the area
normally required for one. This makes it easier to fit multiple
Copper-Fin boilers into cramped mechanical rooms. And you
can even use a smaller diameter vent stack - up to 8” smaller than
typically required for comparable atmospheric boilers - so it saves
money as well as valuable mechanical room space.

Unique Copper-Fin Heat Exchanger
The Lochinvar Copper-Fin boiler design uses a two
pass heat exchanger. Water is circulated through
a row of highly-efficient, finned copper tubes.
The high rate of water flow creates a
scouring action that prevents sediment
and lime-scale buildup, common
in conventional boilers, and
the finned copper tubes
allow maximum heat
transfer efficiency.
To create this special
heat transfer capability,
Lochinvar extrudes the fins
from thick wall copper tubing to
precise specifications - exactly 7 fins per inch.
The result is an integrally-finned tube with a heat transfer ratio 9
times greater than a plain copper tube.

Heavy-Duty Gasketless Design
What’s more, advanced casting processes allowed Lochinvar to
develop a unique one-piece header system. This gasketless design
provides enhanced reliability, improved durability and optimum
performance - without the problems or failures common with
O-rings and gaskets.

Meets the Toughest Air Quality Standards
Because of our unique fan-assisted combustion
process, the Copper-Fin 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 means a cleaner environment.

Enhanced to Provide Performance and Serviceability
Our enhanced Copper-Fin models offer the same reliable operation, and
feature a more service friendly design. The down stream test valves and
referenced gas valves are now in the upper deck for easier access, and
the electrical and BMS connections have been repositioned to the front
of the unit for easier installation.
The gas valves, which are referenced to the sealed combustion chamber,
improve operational performance by monitoring the pressure in the
sealed combustion chamber and adjusting gas flow to maintain the
optimum air/fuel mixture. 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. With dual sight
glasses (one on each end), you can easily monitor burner performance
and flame characteristics throughout the entire combustion chamber.
The operator interface panel provides two-stage electronic
temperature control and comprehensive diagnostic status
without opening the control panel. Its user friendly design
simplifies service while providing additional diagnostic
information through a series of LEDs.

Vent Cost-Savings
Btu/hr
INPUT
495,000
645,000
745,000
985,000
1,225,000
1,435,000
1,795,000
2,065,000

CONVENTIONAL
VENT SIZE
10”
12”
14”
16”
16”
18”
20”
22”

COPPER-FIN
VENT SIZE
6”
8”
8”
10”
12”
12”
14”
14”

$ SAVINGS*
$ 382
$ 504
$ 829
$ 1,228
$ 992
$ 1,466
$ 1,564
$ 2,398

*Comparison based on 25´ vent system using Type “B” double wall vent material,
storm collar and vent cap.

Copper-Fin® Boiler Dimensions & Specifications

Copper-Fin Heating Boiler
Input
Heating Net
Model Max Thermal Capacity I=B=R
Number MBH Efficiency MBH MBH
CBN0497
495
81%
401
349
CBN0647
645
81%
522
454
CBN0747
745
81%
603
524
CBN0987
985
81%
798
694
CBN1257
1255
81%
1,017
884
CBN1437
1435
81%
1,162
1,010
CBN1797
1795
81%
1,454
1,264
CBN2067
2065
81%
1,673
1,455
Notes: Change ‘N’ to ‘L’ for LP gas models.
No deration on LP models.
Performance data based on manufacturer test results.

Dimensions & Specifications

A
31-1/2”
31-1/2”
31-1/2”
36”
36”
36”
36”
36”

B
45-1/4”
56-3/4”
64”
48-1/4”
58-1/2”
68-3/4”
82-1/4”
92-1/2”

C
22-1/4”
22-1/4”
22-1/4”
33-1/2”
33-1/2”
33-1/2”
33-1/2”
33-1/2”

D
12-1/2”
12-1/2”
12-1/2”
15-3/4”
15-3/4”
15-3/4”
15-3/4”
15-3/4”

E
9-1/2”
9-1/2”
9-1/2”
8-1/2”
9-1/2”
10-1/2”
11”
11”

G
29-1/2”
29-1/2”
29-1/2”
33-3/4”
33-3/4”
33-3/4”
33-3/4”
33-3/4”

Gas Vent Shipping
Conn. Size Weight
1-1/4”
6”
440
1-1/4”
8”
510
1-1/4”
8”
550
2”
10”
845
2”
12”
905
2”
12”
1050
2”
14”
1193
2”
14”
1350

Water connections for models CB 0497-747 are 2” NPT on 6-1/2” centers.
Water connections for models CB 0987-2067 are 2-1/2” NPT on 11-1/4” centers.

Standard Features

Available Firing Systems
• Flow Switch
• 24 Volt Control System
• BMS Terminal Strip
• Combustion Air Filter
• Freeze Protection
• 10 Year Limited Warranty on Heat
Exchanger (See warranty for details)

Optional Equipment

Hot Surface Ignition with
Electronic Supervision (Standard)
GE GAP/FM/CSD1
California Code

M13
M7

Venting
• Outdoor Vent Cap

Registered under U.S. Patent # 5,989,020

For Ease In Ordering
By Model Number
M9

UT

NP

rI

/h

AS
.G

T
NA

L

0497

LS
G
IN RO
FIR NT
CO

N

Btu

CB
DE

• Alarm Bell
• Contacts on any Failure
• Contacts for Air Louvers
• Cupro-Nickel Heat Exchanger
• High & Low Gas Pressure Switch
w/ Manual Reset
• Outdoor Reset Control
• Manual Reset Low Water Cut-Off
w/ test
• Stack Frame
• MP2 Sequencer

M9

MO

• 81% Thermal Efficiency
• Electronic Temperature Control
• Fan Assisted Combustion
• Sealed Combustion Chamber
• Stainless Steel Burners
• Low NOx Operation Exceeds the most
Stringent Air Quality Requirements
• ASME Copper Finned Tube
Heat Exchanger
• 160 psi Working Pressure
• Gasketless Heat Exchanger Design
• Pump Relay w/ Delay
• Down Stream Test Valve
• Referenced Gas Valves
• Loch-Heat Ceramic Tile
Combustion Chamber
• Hot Surface Ignition
• Adjustable High Limit w/ Manual Reset
• ASME Pressure Relief Valve
• Temperature & Pressure Gauge

F
22-3/4”
28-1/2”
32”
8-1/2”
10-1/2”
10-1/2”
11”
11”

This boiler is a 495,000 Btu/hr,
natural gas Copper-Fin.
It has M9 firing controls

Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: 615-547-1000
www.Lochinvar.com
CBN-07

(Replaced CBN-06 3/10)

FG-10M-5/11-Printed in U.S.A.



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