Lochinvar CHN0991 User Manual

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High Efficiency In A Space-Saving Design
Commercial Gas Boilers
From 400,000 to 2,070,000 Btu/hr
85% Thermal Efficiency
Less Than 20 ppm NOx Rating
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Copper-Fin II
®
Gas Boilers – The Proven Performers.
Thermal Efficiency Is Higher.....
While Footprint And Vent Sizes Are Smaller
Lochinvar’s Copper-Fin II line of high efficiency commercial gas boilers gives you all the advantages of copper finned tube heat exchanger technology plus the benefits of a sealed combustion system. Every Copper-Fin II model offers four major advantages: higher efficiency, smaller footprint, smaller vent diameters and multiple venting options. Our Copper-Fin II models offer dollar - stretching proportional firing that provides a measured response to the demand for heat — as much or as little as needed.
Outstanding Thermal Efficiency
Copper-Fin II boilers offer a remarkably high 85% thermal efficiency. This means that 85¢ out of every fuel dollar goes into heating the water, dramatically reducing the operating cost of the equipment. Copper-Fin II achieves this efficiency through the combination of an advanced fan assisted combustion system and exclusive gasketless copper fin tube heat exchanger. A time tested and proven combination.
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 of the Copper-Fin II eliminates external heat losses, 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.
Proportional Firing: Greater Savings, More Accurate Temperatures
The Copper-Fin II’s proportional firing lowers your energy costs and delivers more consistent water temperatures. Multiple gas valves supply gas to the burners in stages, and multiple speed blowers maintain the proper airflow to ensure the most efficient combustion at each level of use. Our built-in sequencer controls each of these functions. With digital accuracy, the built-in sequencer carefully monitors the need for heat, and as demand increases or decreases, it automatically adjusts the blower output and gas valve input. As the demand is met, the boiler decreases output gradually, turning off gas valves and reducing combustion air in direct proportion. This allows the Copper-Fin II to maintain a
constant setting. In fact, it’s accurate to within 1° Fahrenheit — a remarkable achievement for units of this capacity. And the proportional firing system features component redundancy, greatly reducing the chance for total system shutdown.
Compact Design - For Installation Ease
The Copper-Fin II 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 Stack Frame
lets you put two units in the footprint of just one.
Meets The Toughest Air Quality Standards
Because of our unique fan-assisted combustion process, the Copper-Fin II
exceeds today’s toughest NOx emissions requirements. An independent certification laboratory test gave us a rating of less than
30 ppm — corrected to 3% O2. And less NOx means a cleaner environment.
Control at Your Fingertips
The enhanced operator interface panel provides fingertip control of the built­in multi-stage digital temperature controller. Its refined user friendly design simplifies service while providing additional diagnostic information with fewer mechanical parts.
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 less time-consuming.
Vent Cost Savings
Btu/hr ATMOSPHERIC COPPER-FIN II INPUT VENT SIZE VENT SIZE $ S
400,000 10” 6” $ 657.00 500,000 10” 6” $ 657.00 650,000 12” 8” $ 731.00 750,000 14” 8” $ 1,450.00 990,000 16” 10” $ 1,790.00 1,260,000 16” 12” $ 1,463.00 1,440,000 18” 12” $ 2,432.00 1,800,000 20” 14” $ 3,526.00 2,070,000 22” 14” $ 3,738.00
*Comparison based on 25´ vent system using Type “B” double wall vent material,
storm collar and vent cap.
AVINGS*
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Our Enhanced Models Raise The Bar...Again
Our enhanced Copper-Fin II models offer the same reliable, efficient operation and feature a more service friendly design. The gas inlet and shutoff cocks, electrical and BMS connections have been repositioned toward the front of the unit for easier service access and simpler installation. And the new 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 direct vent option allows the installer to vent the by-products of combustion directly through a side wall without the use of an auxiliary draft inducer. 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.
Referenced gas valves and shutoff cocks are in the upper deck for easier access. And our Lochinvar exclusive “Aire-Lock” transition ducts provide a positive path for the sealed combustion system that does not require the upper chamber panel to be installed allowing for accurate adjustment during operation.
All BMS connections are on the front portion of the unit and have been designed for easier access and connection.
Venting Options
Conventional
Vents into conventional flue or vent breaching using Type B double wall vent.
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.
Powered Sidewall
Vents directly through the outside wall using an optional powered sidewall cap. Ideal when a vent stack is not practical.
Outdoor
Requires optional outdoor vent cap. Use when indoor space is a problem or if outdoor location gives better access.
Power DirectAire Horizontal
Draws fresh air from outside and vents through sidewall using optional powered sidewall cap.
Sidewall (CH 401-751)
Draws fresh air from inside the room. Vents
up to 50 equivalent feet through the outside wall IV approved vent material. require a powered sidewall cap.
directly
using Category
Does not
DirectAire Vertical with Sidewall Inlet
Draws fresh air from outside and vents through conventional vertical flue.
DirectAire Vertical
Draws fresh air from outside and vents through conventional vertical flue.
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Copper-Fin II® Boiler Dimensions & Specifications
Copper-Fin II Heating Boiler Dimensions & Spec i fi ca tions
Net Model Input Thermal Output I=B=R Vent Air Gas Shipping Number MBH Efficiency MBH MBH A B C D E F G H J K L Size Inlet Conn Weight
CHN401 399 85% 339 291 31-1/2” 37-3/4” 22-1/4” 12-1/2” 7” 7” 29” 23-1/2” 8” 6-1/2” 30-3/4” 6” 6” 1-1/4” 378 CHN501 500 85% 425 365 31-1/2” 45-1/2” 22-1/4” 12-1/2” 7” 7” 29” 23-1/2” 8” 6-1/2” 30-3/4” 6” 6” 1-1/4” 414 CHN651 650 85% 553 475 31-1/2” 56-3/4” 22-1/4” 12-1/2” 8-1/2” 8-1/4” 29” 23-1/2” 8” 6-1/2” 30-3/4” 8” 8” 1-1/4” 500 CHN751 750 85% 638 548 31-1/2” 64” 22-1/4” 12-1/2” 8-1/2” 8-1/4” 29” 23-1/2” 8” 6-1/2” 30-3/4” 8” 8” 1-1/4” 543 CHN0991 990 85% 842 723 36” 48-1/4” 33-1/2” 15-3/4” 8” 9-1/4” 33-3/4” 27” 9-1/4” 9” 41-3/4” 10” 10” 2” 773 CHN1261 1,260 85% 1,071 920 36” 58-1/2” 33-1/2” 15-3/4” 10-1/4” 10” 33-3/4” 27” 9-1/4” 9” 41-3/4” 12” 12” 2” 863 CHN1441 1,440 85% 1,224 1,052 36” 68-3/4” 33-1/2” 15-3/4” 10-1/4” 10-1/2” 33-3/4” 27” 9-1/4” 9” 41-3/4” 12” 12” 2” 965 CHN1801 1,800 85% 1,530 1,315 36” 82-1/4” 33-1/2” 15-3/4” 10” 11-1/2” 33-3/4” 27” 9-1/4” 9” 41-3/4” 14” 12” 2” 1,100 CHN2071 2,070 85% 1,760 1,512 36” 92-1/2” 33-1/2” 15-3/4” 10” 11-1/2” 33-3/4” 27” 9-1/4” 9” 41-3/4” 14” 12” 2” 1,219
Notes: Change ‘N’ to ‘L’ for LP gas models. No deration on LP models Water connections for models CH 401-751 are 2” NPT on 6-1/2” centers. Header increases “B” dimension 3-1/2” for models CH 401-751 and 6-1/4” for models CH 0991-2071 Performance data is based on manufacturer test results.
Standard Features
85% Thermal Efficiency
ASME Copper Finned Tube Heat Exchanger
Gasketless Heat Exchanger Design
Proportional Firing
Built-In Sequencer with up
to 4 stages of operation
Adjustable High Limit w/ Manual Reset
Built-in System Redundancy
24 Volt Control System
Temperature & Pressure Gauge
BMS Terminal Strip
Down Stream Test Valves
10 Year Limited Warranty
on Heat Exchanger (See warranty for details)
Digital Operator Interface Panel
Sealed Combustion Chamber
Stainless Steel Burners
Low NOx Operation Exceeds the
most Stringent Air Quality Requirements
160 PSI Working Pressure
Loch-Heat Ceramic Tile
Combustion Chamber
Hot Surface Ignition
ASME Pressure Relief Valve
Referenced Gas Valves
Flow Switch
PID Temperature Control
Combustion Air Filter
Freeze Protection
Field Convertible Air Inlet Connection
Pump Relay w/ Delay
Optional Equipment
Alarm Bell
Contacts for Air Louvers
Contacts on any Failure
Cupro-Nickel Heat Exchanger
High Gas Pressure Switch
w/ Manual Reset
High & Low Gas Pressure Switch
w/ Manual Reset
Indoor/Outdoor Reset
Manual Reset Low Water Cut-Off
w/test
MP2 Sequencer
Stack Frame
Combustible Floor Shield (CH 401-751)
Water connections for models CH 0991-2071 are 2-1/2” NPT on 11-1/4” centers.
Venting Options
Aire-LockTM Direct Vent Sealed Combustion
DirectAire® Vertical
DirectAire® Vertical w/ Sidewall Inlet
Outdoor Installation
Power DirectAire® Horizontal
Powered Side Wall
Sidewall (CH 401-751)
Firing Controls
M9 Hot Surface Ignition with Electronic Supervision (Standard) M13 GE GAP/FM/CSD1 (CH 501-2017) M7 California Code
Registered under U.S. Patent #5,989,020
For Ease In Ordering By Model Number
CH N 501 M9
FUEL TYPE
MODEL
This heater is 500,000 Btu/hr natural gas
®
Copper-Fin
II boiler. It has M9 firing controls.
Btu/hr
INPUT
FIRING
CONTROLS
Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: 615-547-1000
CHN-09 (Replaces CHN-08 8/08)
www.Lochinvar.com
FG-5M-3/10– Printed in U.S.A.
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