Lochinvar Power-Fin Designer's Manual
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Lochinvar Power-Fin Designer's Manual

Lochinvar Power-Fin Designer's Manual

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H I G H E F F I C I E N C Y C O M M E R C I A L B O I L E R S
D E S I G N E R ' S G U I D E P O W E R - F I N
W A T E R H E A T E R
87%
Up to
Thermal Efficiency
w w w . L o c h i n v a r .c o m

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  • Page 1 ® H I G H E F F I C I E N C Y C O M M E R C I A L B O I L E R S D E S I G N E R ’ S G U I D E P O W E R - F I N W A T E R H E A T E R Up to Thermal Efficiency...
  • Page 2 Dear Design-Build Contractor / Project Manager / Design Engineer, At Lochinvar, we have long recognized the importance of innovation to any product or service. Those who share in this business also face the challenge of meeting constantly changing needs and energy effi ciency demands.

  • Page 3: Table Of Contents

    Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Table of Contents Combustion Air …………..…..……………………… Page 5 Venting ….…………………………………………….. Page 8 Gas ….….…………….……………….………………… Page 21 Water …..……………………..……………………….. Page 23 Electricity & Controls .…………………………….. Page 29 Other Details ..………………………………………..
  • Page 4 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com At Lochinvar, we know that designing a water heater is hard work. Designing a domestic water heating system is no picnic either. Demands for greater efficiency and elaborate system control have made systems more complex.

  • Page 5: Ventilation Air

    Therefore, a good, easy flow of clean air is 100% necessary for clean, efficient combustion. So, we need to provide a permanent and uninterrupted flow of air to the water heater. The Power-fin water heater is designed to receive combustion air by one of TWO methods. The water heater may draw combustion air from the room or have the air ducted directly to the water heater from an exterior space.
  • Page 6 This opening must be located within 12" (30 cm) of the top of the enclosure. Did you Know? THE POWER-FIN COMES WITH LOUVER CONTACTS AS STANDARD EQUIPMENT. THE CONTACTS WILL OPEN AND CLOSE A MOTORIZED LOUVER ON EACH CALL FOR HEAT.

  • Page 7: Combustion Air

    THE FORMATION OF CORROSIVE ACIDS THAT WILL DAMAGE THE APPLIANCE AND THE VENT. COMBUSTION AIR FILTER The Power-fin has a built-in air filter as standard equipment. Located at the combustion air inlet, the air filter is provided to help ensure clean air is used for the combustion process.

  • Page 8: Venting

    Here is the traditional vent category diagram, standard throughout the industry. Lochinvar offers twelve venting options that allow the Power-fin to be installed in any of three categories - Category I, Category II and Category IV. Depending upon the “Firing Code” chosen, the Power- fin water heater will be factory trimmed for direct connection either Category I or Category IV venting.
  • Page 9 So how does pressure apply to the Power-fin? Again, easy. Depending upon the model, the Power-fin will be factory trimmed for a small vent connection to positive vent or a large vent connection to non-positive vent. This is explained further in Part 2, “Firing Code”.
  • Page 10 20%, they produce a comparatively low stack temperature that will likely cause condensation to occur in the stack. Condensing. Pressure – The Power-fin 0502-2001-M9 models are factory trimmed with a small diameter vent connection. The blower CAN PUSH the flue products through a similarly sized stack therefore creating a positive pressure.
  • Page 11 Chapter 1 of this designer’s guide. Maximum distance – 50 equivalent feet of vent. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent connection in the following dimensions. MODEL...
  • Page 12 Maximum distance – 50 equivalent feet of air intake. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent and air inlet connections in the following dimensions.
  • Page 13 Maximum distance – 50 equivalent feet of air intake. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent and air inlet connections in the following dimensions.
  • Page 14 Maximum distance - 50 equivalent feet of vent. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent connection in the following dimensions. The table also includes the kit part numbers for the sidewall exhaust caps which must be used.
  • Page 15 Maximum distance - 50 equivalent feet of air intake. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent and air inlet connections in the following dimensions.
  • Page 16 Maximum distance - 50 equivalent feet of air intake. The Category IV Power-fin with a model number that features the M9 (Modulating Fire) Firing Code will be factory trimmed for Category IV vent and air inlet connections in the following dimensions.
  • Page 17 Retrofit of an original design Power-fin installed with Concentric Kit If your job is a retrofit of a Power-fin 0250-1000 built to the original design, here’s a little tip. If the PFN0250PM-F9, PFN0500PM-F9, PFN0750PM-F9 or PFN1000PM-F9 is installed with a concentric vent kit, it is installed as a Category IV appliance.
  • Page 18 A field supplied barometric damper MUST be installed on Power-fin 1501-2001-B9. The Category I Power-fin with a model number that features the F9 or B9 Firing Code will be factory trimmed for Category I vent connection in the following dimensions.
  • Page 19 Maximum distance - 50 equivalent feet of air intake. The Category I Power-fin with a model number that features the F9 or B9 Firing Code will be factory trimmed for Category I vent and air inlet connections in the following dimensions.
  • Page 20 Maximum distance - 50 equivalent feet of air intake. The Category I Power-fin with a model number that features the F9 or B9 Firing Code will be factory trimmed for Category I vent and air inlet connections in the following dimensions. The table also includes the kit part numbers for the sidewall air intake caps which must be used.

  • Page 21: Gas

    In Chapter 3, we discuss delivering a steady and reliable supply of gas to the appliance. The key to the gas supply is sizing the gas line properly. The Power-fin will require less than a half a pound of pressure. The following Sizing Chart is based on less than ½ pound of pressure or less than 14 inches of pressure.
  • Page 22 Example, the model number changes from PFN0502PM-M9 to PFL0502PM-M9 from natural to L.P. gas. The Power-fin must be factory trimmed for the chosen gas type and may not be field converted from Natural to L.P. gas or vice versa.

  • Page 23: Water

    Chapter 4 – Water www.lochinvar.com Domestic water pipe design seems easy enough. The Power-fin water heater is connected to a storage tank. Water recirculates between the two to maintain a prescribed water temperature. Hot water is drawn off the top of the tank to supply the system. Fresh water flows in from the city.
  • Page 24 2 – Unions 1 – Cold Water Tee Did you Know? THE POWER-FIN COMES WITH INTERMITTENT PUMP CONTACTS AS STANDARD EQUIPMENT. THE CONTACTS WILL OPERATE THE RECIRCULATION PUMP ON EACH CALL FOR HEAT AND THE PUMP DELAY TIMING IS FIELD PROGRAMMABLE.

  • Page 25: Water Flow

    WATER FLOW The flow rate concept is easy. The water MUST flow through the Power-fin at a specified flow rate. Period. The specified flow rate for the Power-fin 502-1302 models is 75 GPM.
  • Page 26 These flow rates will deliver the proper temperature rises for lime scale free operation in the copper-finned tubes that are standard equipment on all Power-fins. For water that is just outside the specified range, the Power-fin water heaters can be factory trimmed with Copper-Nickel heat exchangers.

  • Page 27: Water Temperature

    WATER TEMPERATURE Water temperature is also an easy concept. The water temperature delivered to the Power-fin must be high enough to avoid condensation in the heat exchanger. Period. The minimum return water temperature to the Power-fin water heater is 140°F (60°C).
  • Page 28 125 gallons. OK, you can shave that a bit and install the RJS120 or RJA120 tank. Even though the Power-fin series has a 5:1 turndown and will fire as low as 20% of the total Btu/hr input. The tank must be sized for maximum demand and maximum firing rate. So, size for the full Btu/hr input.

  • Page 29: Electricity & Controls

    PFN2001 15.3 SMART SYSTEM CONTROLS The Power-fin features the Smart System control. The Smart System control is designed to operate all the various elements of domestic hot water heating system. The Smart System will control temperature, operate the pump and dispense a large amount of operational data.
  • Page 30 The Smart System control will “make” dry contacts for the duration of the Main Burner. LOW VOLTAGE TERMINAL BOARD Every Power-fin is equipped with a Low Voltage Terminal Board for a variety of other field connections and control features. Tank Sensor or Tank Thermostat The Smart System control will operate the water heater based on a signal from a tank sensor with a resistance signal or a tank thermostat with an enable / disable signal.
  • Page 31 Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Low Voltage Circuit Board SMART SYSTEM OPERATIONAL FEATURES The following is a list of just a few of the many other operational features built-in to the Smart System control For the complete list of features with more detailed explanations plus programming parameters, refer to the Installation &...
  • Page 32 Lochinvar offers PC Software. The PC software program can be downloaded onto a laptop computer and with the connection cable provided in the PC Software kit; you can connect to the PC port on the front of every Power-fin control panel. SCREEN SHOT OF PC SOFTWARE...

  • Page 33: Other Details

    Great Importance STANDARD CODES, STANDARD CONSTRUCTION The Power-fin water heater is design certified to the latest edition of ANSI Z21.10.3, the water heater standard. The third party certification was performed by CSA International and the water heater bears the American Blue Star emblem and the Canadian Blue Flame emblem. The heat exchanger inside the water heater conforms to the latest edition of the ASME Boiler and Pressure Vessel Code, Section IV and the vessel bears the ASME “HLW”...
  • Page 34 1" *An Alcove is a closet without a door. CONDENSATE TRAP The Power-fin is fitted with a condensate trap to be field mounted on the floor behind the appliance. The trap is a requirement of the ANSI standard for any Category IV vented appliance with condensation forming in the stack.
  • Page 35 Factory installed onto the inner front panel of the appliance and wired to the Alarm on Any Failure contacts. It will sound on any failure. A silencing switch is provided. Alarm on Any Failure contacts are standard on every Power-fin water heater for connection to a remote alarm bell or Building Management System.

  • Page 36: Piping Diagrams

    Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Appendix A Water Heater Piping Diagrams...
  • Page 37 Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com PAGE A1 SINGLE HEATER / SINGLE TANK The illustration is for concept only and should not be used for actual installation without engineering or...
  • Page 38 Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com PAGE A2 TWO HEATER / ONE TANK WITH COMMON MANIFOLD PIPING The illustration is for concept only and should not be used for actual installation without engineering or...
  • Page 39 Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com PAGE A3 TWO HEATER / TWO TANK WITH COMMON MANIFOLD PIPING See page 24 for Common Manifold Pipe Size Tables The illustration is for concept only and should not be used for actual installation without engineering or...
  • Page 40 Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com PAGE A4 TWO TEMPERATURE SYSTEM WITH 3-WAY MIXING VALVE The illustration is for concept only and should not be used for actual installation without engineering or...

  • Page 41: Technical Data

    Designer’s Guide / Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Appendix B Technical Data Water Heater Component Breakdown...
  • Page 42 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Power-fin – the components, the design 1. Heat exchanger The heat exchanger allows system water to flow through specially designed tubes for maximum heat transfer. The glass lined headers and copper finned tubing are encased in a jacket that contains the combustion process.
  • Page 43 Designer’s Guide Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com 18. Low voltage connection board The low voltage connection board provides a location to tie in all of the low voltage contacts to the appliance. This is where most of the external safety devices are connected to the unit such as the tank thermostat or tank sensor.
  • Page 44 Designer’s Guide Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Power-fin 0502 – 1302 Model 0502 – 1302 / Front View Model 0502 – 1302 / Rear View Model 0502 – 1302 / Right Side (inside view)
  • Page 45 Designer’s Guide Power-fin Water Heater LOCHINVAR CORPORATION 300 MADDOX SIMPSON PKWY LEBANON, TN 37090 www.lochinvar.com Power-fin 1501 – 2001 Model 1501 – 2001 / Front View Model 1501 – 2001 / Rear View Model 1501 – 2001 / Right Side (inside view)
  • Page 46 Lochinvar products. This is a screen shot of the Power-fin webpage. From the home page, click the “Water Heaters” button on the left side of the page. On the next page, click “Better Idea – Split System”. This takes you to a new page listing all the Lochinvar product families.
  • Page 47 NOTES...
  • Page 48 3 0 0 M a d d o x S i m p s o n P a r k w a y, L e b a n o n, T N 3 7 0 9 0 | 6 1 5 - 8 8 9 - 8 9 0 0 | f a x : 6 1 5 - 5 4 7 - 1 0 0 0 | w w w . L o c h i n v a r .c o m PF-DG-05 (Revised PF-DG-05 2/09) 2/10-Printed in U.S.A.

This manual is also suitable for:

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