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Summary of Contents for Lochinvar EFFICIENCY PLUS
- Page 1 DESIGNER’S GUIDE EFFICIENCY + BOILER ® 1 5 0 , 0 0 0 – 3 0 0 , 0 0 0 B T U / H R...
- Page 2 The designer’s guide you are now holding has been designed to make it more convenient for you to select the perfect Lochinvar boiler for your projects and provide correct specifications for your teams. All information has been organized and presented in a succinct, easy-to-use manner, so you can use and share information confidently and with minimal effort.
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Page 3: Table Of Contents
Table of Contents Air Removal ..... .18 FIG. 14 Outdoor Venting ...13 FIG. -
Page 4: Codes
Lochinvar CODES In designing The equipment shall be installed in a hot water heating system, accordance with those installation pay special attention to: regulations in effect in the local area where the installation is to be made. These must be carefully followed in all cases. -
Page 5: Clearances
The indoor unit must be installed so that (TABLE A) CLEARANCES FROM COMBUSTIBLE CONSTRUCTION the ignition system components are RIGHT SIDE 1” protected from water (dripping, spraying, REAR 1” rain, etc.) during appliance operation and LEFT SIDE 6” (24” suggested for service) service (circulator replacement, control FRONT 3”... - Page 6 Lochinvar Installation Code for Gas Burning Appliances If combustion and ventilation air is EXAMPLE OF and Equipment, or applicable provisions of taken from the outdoors using a SIZING FOR COMBUSTION the local building codes. duct to deliver the air to the &...
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Page 7: Contaminants
The connection from the appliance vent to the CONTAMINANTS CAUTION! stack or vent termination outside the building Combustion air drawn from an interior or EXHAUST FANS: must be made with listed Type “B” double exterior space must be free of any chemical Any fan or equipment wall vent (or equivalent) for conventional vent fumes which could be corrosive to the boiler. - Page 8 Lochinvar The efficiency of this appliance allows its Vent Terminations WARNING products of combustion to be vented through When locating the vent cap, consider the effects Vent connectors serving a smaller vent pipe when compared to units of snow, leaf dropping, etc., to ensure that no gas appliances, which of the same Btu/hr capacity.
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Page 9: Venting Options
Masonry Chimney Metallic liner systems (Type “B” double-wall, A masonry chimney must be properly sized flexible, or rigid metallic liners) are recommended to line or reline an existing for the installation of a high efficiency gas fired appliance. Venting of a high efficiency masonry chimney. -
Page 10: Installation
Lochinvar When each unit is installed with an individual All draft readings are made while the unit is NOTE: vent, and the negative draft is higher than the in stable operation (approximately 2 to 5 An unlined masonry chimney should not be specified range (0.02 to 0.05 inches of water... -
Page 11: Sidewall Air Inlet
The sidewall or vertical roof top E+Vent NOTE: (TABLE C) E+ VENT SIDEWALL AIR KIT PART NUMBERS combustion air supply system has specific vent The use of double wall material and installation requirements. vent material for the MODE CONVENTIONAL VENT AIR SIDEWALL NUMBER FLUE SIZE*... -
Page 12: Vertical Air Inlet
Lochinvar Vertical Air Inlet than the total area of all air inlet pipes The air inlet cap for the vertical roof top connected to the common air inlet. This air inlet is assembled from components exterior opening for combustion air must purchased locally. -
Page 13: Fig. 10 Horizontal Direct Vent
Horizontal Direct Vent where high winds may occur. Horizontal direct vent applications require a vent kit which will be supplied by Lochinvar The combustion air inlet cap and vent cap to assure proper operation. for flue outlet must be located on the same sidewall and in the same pressure zone. -
Page 14: Fig. 12 Multiple Sidewall Vent Caps
Vertical direct vent applications do not require 3 feet MIN. Boilers which are shut a vent kit to be supplied by Lochinvar. The AIR INLETS down or will not vent cap and air inlet cap for vertical direct 3 feet FLUE OUTLETS MIN. -
Page 15: Outdoor Installation
Units are self venting and can be used locations where rain from building runoff drains outdoors when installed with the optional will spill onto the water heater. Lochinvar must Outdoor Vent Kit. This kit includes a one piece furnish an outdoor vent kit in accordance with top cover which replaces the standard two CSA international requirements. -
Page 16: Gas Supply
Lochinvar EXAMPLE OF (TABLE G) – GAS SUPPLY PIPE SIZING HIGH Length of Pipe In Straight Feet Nominal Iron ALTITUDE Pipe Size, Inches APPLICATIONS For example, if a unit’s input is 200,000 Btu/hr 1-1/4 1,400 at sea level, the rated... -
Page 17: Primary/Secondary Piping
AND SYSTEM PIPING Use of primary/secondary system Lochinvar boilers are generally capable of will eliminate the need for a system or boiler operating within the design flow rates for the bypass. Figure 15 depicts one example of building heating system. -
Page 18: Relief Valve Piping
Lochinvar IMPORTANT! LIT0476 MAKE-UP WATER Water Flow Switch Operation of this boiler Due to the low water content (between 1 and 6 on a low temperature gallons) of the copper finned tube heat exchanger, a flow switch is available for use as a... -
Page 19: Low Water Temperature Systems
High Flow Systems Its compact, simple design and low When the flow rate of the system exceeds the boiler mass permits a simple bypass maximum allowable flow rate through the boiler arrangement which will allow the system to (Table I), boiler bypass piping should be be operated at any temperature above installed. -
Page 20: Air Removal
Lochinvar EXPANSION TANK HEATING & COOLING PUMP COIL LOW WATER FLOW SWITCH CHILLER WATER SUPPLY SUPPLY BOILER 3. CLOSE BOTH "A" AND "C" VALVES WHEN RUNNING CHILLER. DIAGRAM NOTES: 4. CLOSE BOTH "B" AND "D" VALVES WHEN RUNNING BOILER. 1. VALVES "D" AND "C" MAY BE MANUAL OR AUTOMATIC- TO SUIT. -
Page 21: Boiler Operating Temperature Control
TEMPERATURE / REMOTE TEMPERATURE CAUTION! PRESSURE GAUGE CONTROL, CONNECTION For proper operation TO TERMINAL STRIP This boiler is equipped with a dial type the system should not temperature/pressure gauge. This gauge is A remote temperature control may be be operated at less factory installed in the outlet side of the heat connected to the boiler. - Page 22 E F F I C I E N C Y + ® B O I L E R P I P I N G D I A G R A M S L o c h i n v a r ’...
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Page 23: Piping Diagram
PIPING DIAGRAM PRIMARY/SECONDARY BOILER PIPING MAKE-UP WATER HEATING SUPPLY LOOP TO FLOOR DRAIN 12” MAX* *AS CLOSE AS PRACTICAL – 12” OR 4 PIPE DIAMETERS HEATING RETURN LOOP MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM. This illustration is for concept only and should not be used for any actual installation without engineering LIT0476 or technical advice from a licensed engineer. - Page 24 PIPING DIAGRAM MULTIPLE UNIT PRIMARY / SECONDARY PIPING MAKE-UP WATER TO SYSTEM SUPPLY CAP EACH MANIFOLD 12” MAX* FROM SYSTEM RETURN *AS CLOSE AS PRACTICAL – 12 ” OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM. This illustration is for concept only and should not be used for any actual installation without engineering LIT0475 or technical advice from a licensed engineer.
- Page 25 PIPING DIAGRAM LOW TEMPERATURE BOILER/BYPASS PIPING MAKE-UP WATER HEATING SUPPLY LOOP TO FLOOR DRAIN BYPASS *12 ” MAX PRIMARY - SECONDARY BOILER PIPING WITH BYPASS FOR LOW TEMPERATURE OPERATION HEATING RETURN LOOP *AS CLOSE AS PRACTICAL – 12 ” OR 4 PIPE DIAMETERS MAXIMUM DISTANCE BETWEEN MANIFOLD CONNECTIONS TO SYSTEM.
- Page 26 Notes L o c h i n v a r ’ 6 1 5 - 8 8 9 - 8 9 0 0 D E S I G N E R S G U I D E E F F I C I E N C Y B O I L E R...
- Page 28 Lochinvar Corporation • 615-889-8900 / Fax 615-547-1000 www.Lochinvar.com EB-DG-03 4.5M-2/05-Printed in U.S.A.
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