Lochinvar 45000, 260000 service manual Minimum Recommended Combustion AIR Supply to Equipment Room

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Installation & Service Manual

1Determine boiler location

TABLE - 1B

MINIMUM RECOMMENDED COMBUSTION

AIR SUPPLY TO EQUIPMENT ROOM

 

 

*Outside Air from

 

*Outside Air from

**Inside Air from

 

 

Input

2 Openings Directly from

*Outside Air from

2 Ducts Delivered from

2 Ducts Delivered from

 

 

Outdoors

1 Opening Directly

Outdoors

Interior Space

 

 

Btu/hr

 

 

 

 

from Outdoors, in2

 

 

 

 

 

 

 

Top

Bottom

Top

Bottom

Top

Bottom

 

 

 

 

 

 

 

Opening, in2

Opening, in2

 

Opening, in2

Opening, in2

Opening, in2

Opening, in2

 

 

 

 

 

 

 

 

 

 

 

 

45,000

12

12

15

23

23

100

100

 

 

(78 cm2)

(78 cm2)

(97 cm2)

(149 cm2)

(149 cm2)

(646 cm2)

(646 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

75,000

19

19

25

38

38

100

100

 

 

(123 cm2)

(123 cm2)

(162 cm2)

(246 cm2)

(246 cm2)

(646 cm2)

(646 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

90,000

23

23

30

45

45

100

100

 

 

(148 cm2)

(148 cm2)

(194 cm2)

(291 cm2)

(291 cm2)

(646 cm2)

(646 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

135,000

34

34

45

68

68

135

135

 

 

(220 cm2)

(220 cm2)

(291 cm2)

(439 cm2)

(439 cm2)

(871 cm2)

(871 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

180,000

45

45

60

90

90

180

180

 

 

(291 cm2)

(291 cm2)

(388 cm2)

(581 cm2)

(581 cm2)

(1,162 cm2)

(1,162 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

215,000

54

54

72

108

108

215

215

 

 

(349 cm2)

(349 cm2)

(465 cm2)

(697 cm2)

(697 cm2)

(1,388 cm2)

(1,388 cm2)

 

 

 

 

 

 

 

 

 

 

 

 

260,000

65

65

87

130

130

260

260

 

 

(420 cm2)

(420 cm2)

(562 cm2)

(839 cm2)

(839 cm2)

(1,678 cm2)

(1,678 cm2)

 

 

 

 

 

 

 

 

 

 

 

*Outside air openings shall directly communicate with the outdoors. When combustion air is drawn from the outside through a duct, the net free area of each of the two openings must have twice (2 times) the free area required for Outside Air/2 Openings. The above requirements are for the boiler only; additional gas fired appliances in the equipment room will require an increase in the net free area to supply adequate combustion air for all appliances.

**Combined interior space must be 50 cubic feet per 1,000 Btu/hr input. Buildings MUST NOT be of *“Tight Construction”. For buildings of *“Tight Construction”, provide air openings into the building from outside.

*No combustion air openings are needed when the water heater is installed in a space with a volume NO LESS than 50 cubic feet per 1,000 Btu/hr of all installed gas fired appliances. Buildings MUST NOT be of *“Tight Construction”.

*”Tight Construction” is defined as a building with less than 0.40 ACH (air changes per hour).

Vent installations for connection to gas vents or chimneys must be in accordance with “Venting of Equipment,” of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment or applicable provisions of the local building codes.

Adequate combustion and ventilation air must be supplied to the room where the appliance is installed in accordance with the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

The distance of the vent terminal from adjacent buildings, windows that open and building openings MUST comply with the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equip- ment.

Vent connection is made directly to the top of the appliance. This appliance is designed with a built-in draft diverter. No additional external draft hood is required. The connection from the appliance vent to the common vent or chimney must be made as direct as possible.

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Contents Models 45,000 260,000 Btu/hr Contents Warranty Please read before proceedingCodes Solution Boiler =B=R Rating RatingsSolution How it works Temperature and pressure gaugeSolution How it works Solution How it works Determine boiler location Location of unit3Combustion Air Direct from Outside 6Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Venting Conventional Negative Draft Venting SystemVent Pipe Sizes Venting Vertical Vent Termination Clearances Less from Ridge From Parapet WallMasonry Chimney Installation Sidewall Venting Negative DraftVent Materials Fan Assisted VentingAutomatic Vent Damper 7Vent Damper and Vent Damper Terminal BlockGas connections Gas Supply Gas Pressure TestGas Connection Install Piping to Control Gas PipingGas Manifold Pressure Adjustment Procedure 2WrenchChecking Gas Supply Pressure 4Gas Supply PressureCombination Gas Valves Venting of Combination Gas ValvesTwo Stage Burner Control System Water Flow Switch if equipped Water connectionsRelief Valve Typical Heating Boiler Installations Low Water Cutoff if equippedMinimum Required Flow For Heating Boiler General Plumbing RulesSystem Temperature Rise Chart Piping of the Boiler SystemHeat Exchanger Pressure Drop Chart Water ConnectionsCirculator Pump Requirements Circulator Pump Specifications Primary/Secondary Boiler PipingCirculator Pump Operation Low Temperature Bypass Requirements Full Flow ApplicationBoiler Flow Rates Primary / Secondary Piping Make UP WaterMake UP Water 6Multiple Boilers Zoned with Circulators Full System Flow From System8Single Boiler Full System Flow with Low Temperature Bypass Terminal Strip Wiring Boiler Operating Temperature ControlElectrical connections Auxiliary Device Connection to Terminal StripTemperature Adjustment AMP Draw DataMaximum SET Point Determination Maximum Set Point DeterminationOutdoor Air Temperature Sensor Wiring of Remote SensorsInstallation of Remote Sensors Outdoor Air Reset Option Additional Temperature ControlsBlocked Vent and Flame Roll-Out / Flame Interlock Switch 7Blocked Vent Switch LocationPre-start Checklist Start-upInitial Start-up Lighting Instructions for Spark Ignition Pilot ModelsSafety Shutoff Test for Spark Ignition Pilot System Operating InstructionsTo Turn Off Gas to Appliance Intermittent Pilot Spark Ignition System Freeze ProtectionWater Treatment Ignition and Control TimingsMaintenance Maintenance and annual startup Service technicianOwner maintenance See the User’s Information Manual for instructionsMaintenance Check Expansion Tank Check Relief ValveCheck All Wiring Check Control SettingsHeat Exchanger / Burner Access Perform Start-up and ChecksInspection and Cleaning Breathing Fresh airReview with owner Inspection of Heat Exchanger WaterwaysGas Train and Controls Water Circulating PumpTroubleshooting Troubleshooting Guide M9 Solution BoilersDiagrams Schematic Diagram M9 UnitWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models 45,000 260,000 Btu/hr Models