AUGUST, High-Efficiency Condensing Gas-Fired Separated Combustion Unit Heaters

Transcription

1 AUGUST, 01 High-Efficiency Condensing Gas-Fired Separated Combustion Unit Heaters

2 INTRODUCTION / TABLE OF CONTENTS At 9% thermal efficiency for all model sizes, Modine s Effinity 9 condensing unit heater features the highest efficiency available in North America for gas-fired unit heaters. This industry leading efficiency is a result of the coupling of our Conservicore secondary heat exchanger technology with our robust tubular primary heat exchanger design. The Conservicore technology features a secondary recuperative heat exchanger fabricated from AL9-4C stainless steel. This material is superior to other lower grades of stainless steel and aluminum, resulting in outstanding ability to withstand the corrosive environment of condensing gas fired equipment. Table.1 - Estimated Annual Fuel Cost Savings Using the Effinity 9 Condensing Unit Heater Available in ten model sizes with input ranges from 55,000 to 10,000 Btu/Hr, Modine offers application flexibility unmatched in the industry. The separated combustion units draw combustion air from outside to ensure that the unit will always have plenty of fresh, clean air for combustion while increasing the overall heating efficiency. Venting material to be used is PVC, an extremely cost effective vent system. This catalog describes the design benefits, construction features, performance data, unit selection procedure, and the optional and accessory devices available for the Modine Effinity 9 Condensing Unit Heater, Models PTC & BTC. Figure.1 - U.S. Average Heat Load Hours Map Estimated Annual Savings Against Other Equipment ➀ ➁ Gravity Vented Power Vented Design Heat Load (Btu/Hr): 10,000 80,000 10,000 80, $06 $71 $16 $ $611 $1,47 $7 $67 Annual Heat Load Hours (Refer to Figure.1) 1500 $917 $,140 $409 $ $1, $,85 $546 $1, $1,59 $,567 $68 $1, $1,84 $4,80 $819 $1, $,140 $4,99 $955 $,9 ➀ Based on a natural gas rate of $1.10/Therm. Actual realized savings can vary significantly based on a number of changing factors including, but not limited to, fuel prices, climate, building use or construction, etc. ➁ Compares 9% efficient against 65% seasonal efficient gravity vented and 78% seasonal efficient power vented. Use 500 for Alaska and Canada. Table of Contents Page Design Features General Performance and Electrical Data - Model PTC... 5 General Performance and Electrical Data - Model BTC Electrical Selection Details - All Models Accessories Downturn Hood Performance Data... 1 Selection Example - Model PTC... 1 Selection Example - Model BTC Dimensional Data - Model PTC Dimensional Data - Model BTC Specifications - All Models Model Nomenclature WARNING!! 1. Do not locate ANY gas-fired unit in areas where chlorinated, halogenated, or acidic vapors are present in the atmosphere.. Do not install in potentially explosive or flammable atmosphere laden with dust, sawdust, or similar airborne materials. CAUTION Heaters are designed for use in heating applications with ambient temperatures between 40 F and 80 F. Heaters should not be used in applications where the heated space temperature is below 40 F. The combination of low space and combustion air temperatures may result in condensate freezing in the secondary heat exchanger and/or condensate drain. As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice. AL9-4C is a Registered Trademark of Allegheny Ludlum Corporation. TM Effinity 9, Conservicore, and any combination of these names either together or with other words is trademarked by Modine Manufacturing Co

3 DESIGN FEATURES Figure.1 - Effinity 9 Model PTC/BTC (PTC Shown) Figure. - Modine Conservicore Heat Exchanger SECONDARY HEAT EXCHANGER POWER EXHAUSTER PRIMARY HEAT EXCHANGER Table.1 - Standard Features and Factory Options ➀ Feature PTC BTC Cabinet and Air Mover Heat Exchanger and Burner Controls Aluminized steel cabinet (gauge indicated) 0 ga. 0 ga. Baked-on polyester powder paint for durability and corrosion resistence Adjustable air-deflector blades Fans engineered for quiet operation Totally enclosed fan motors for maximum durability Fingerproof fan guard (standard on sizes 110 and smaller) Adjustable motor sheaves, certified to 0.7" W.C. external static pressure 9% thermally efficient Opt Aluminized steel primary heat exchanger (409 stainless steel optional) Tubular heat exchanger for superior durability In-shot burner on each heat exchanger tube for reliable performance, ease of serviceability and low sound level on flame ignition/extinction Modine Conservicore technology on secondary recuperative heat exchanger with AL9-4C stainless steel material as standard ETL certification for residential (size 110 and smaller only), commercial, and industrial use in the US and Canada Factory-installed power exhauster Controls for natural gas (propane optional) Single stage gas controls Flame roll-out safety switch (model sizes 110 and smaller) High limit safety controls for both the heated air and flue gas temperature Condensate drain overflow switch to verify proper condensate drainage Differential pressure switch for proof of venting Direct spark ignition with continuous retry control system Contractor Convenience Package featuring a condensate pump convenience outlet, unit on/off switch, heater function status indicator lights, and external terminals for thermostat wiring Gas control step down transformer with 4V gas controls Fan delay timer ➀ = See page 11 for Field Installed Accessories

4 DESIGN FEATURES Figure Factory Mounted Standard Features 16 ➀ ➁ ➂ ➃ ➄ 18 ➅ ➇ ➉ ➈ Model PTC Model BTC ➀ Power Exhauster All units are supplied with a round vent pipe and combustion air inlet pipe connections. ➁ Pressure Switch An automatic reset vent pressure switch is supplied on all units and is designed to prevent operation of the main burner in the event there is restricted venting of flue products. This restriction may occur due to an improper vent diameter, long vent runs, un-approved vent terminal, high winds, high negative pressure within space, etc. After the cause of the restriction has been corrected, the pressure switch will reset automatically. ➂ Control Step Down Transformer The control step down transformer is located in the electrical junction box. The transformer is used to step down from 115V to 4V for the gas controls, fan delay relay, field supplied motor starter, etc. An additional field installed transformer is required if the supply voltage is 08V, 0V, 460V, or 575V. To determine the control transformer supplied as well as any required accessory transformers, refer to Table ➃ Integrated Direct Spark Control Board The integrated direct spark ignition control combines all furnace control functions. The integrated board provides digital control of the air mover, inducer, ignition, gas valve and flame sense as well as monitoring the safety circuit at all times. The board includes LED diagnostics for trouble shooting and a fused power supply. Ignition control is 100% shut-off with continuous retry. ➄ Flame Sensor Remote flame sensor verifies ignition of all burners, monitors the flame signal and communicates with the integrated circuit board. ➅ Single Stage Gas Valve The main gas valve is factory installed on the unit heater gas train. The main gas valve provides regulator, main gas, and manual shutoff functions. The valve is redundant and provides 100% shut off. ➆ Flame Roll Out Switch (size 110 and smaller only) (hidden) Flame roll out switches are mounted near the burners and will shut off the gas supply in the event of an unsafe flame roll out condition. ➇ Direct Spark Igniter Provides spark for direct ignition of the burners. ➈ High Limit Switches One limit control is mounted in the air stream and will shut off the gas supply in the event of overheating. The other limit control is mounted on the power exhauster housing and will shut off the gas supply in the event of overheating flue gas temperatures. ➉ Condensate Drain Overflow Switch Shuts down gas controls if condensate is not properly draining from the unit. 11 Gas Pipe Connection Easy access to factory installed gas pipe connection stubbed to outside of unit casing. 1 Condensate Drain Connection Easy access to factory installed condensate drain pipe connection stubbed to outside of unit casing. 1 Combustion Air Inlet Pipe Connection Simple connection for combustion air inlet piping. 14 Vent Pipe Connection Simple Fernco rubber boot connection for PVC vent system. 15 Fan Guard (Standard for PTC Models) Propeller units may be equiped with an optional finger proof fan guard (standard on size 110 and smaller) for added protection. If ordered, the finger proof fan guard is installed at the factory in place of the standard fan guard. 16 Contractor Convenience Package External junction box features simple connection of supply power wiring internally, thermostat wiring to terminals externally, an On/Off switch, a single 115V outlet for connection of an external condensate pump, and status indicator lights to display the operational state of the unit. 17 Horizontal Air Deflector Blades Factory mounted on the discharge of the unit, the blades can be adjusted to provide horizontal (up and down) delivery control of the heated air. Vertical deflector blades are available as a field installed accessory. 18 Blower Motor (Standard for BTC Models) Blower motors smaller than HP are factory installed on the blower housing. Motors HP and above ship loose for field installation to prevent damage during shipment. The blower motor is supplied with an adjustable sheave that can be used to increase/decrease the blower RPM, and the blower motor can be provided in a variety of supply voltages and motor horsepowers. 19 Blower Enclosure (OPT for BTC Models) 0 Filter Rack (OPT for BTC Models) Provides filtration of air to be heated. Must include Blower Enclosure accessory

5 GENERAL PERFORMANCE AND ELECTRICAL DATA - MODEL PTC Table Propeller Unit Heater Model PTC General Performance Data Model PTC Sizes Btu/Hr Input 55,000 65,000 85, ,000 15, , ,000 15,000 60,000 10,000 Btu/Hr Output 51,150 60,450 79,050 10,00 15, , , ,950 41,800 88,00 Condensate Production (Gal./Hr.) Entering Airflow 70 F Outlet Velocity (FPM) Air Temp. Rise ( F) Max. Mounting Height (Ft.) Heat Throw Max. Mtg Ht Motor Type PSC PSC PSC PSC PSC PSC PSC PSC PSC PSC Motor HP 1/8 1/8 1/8 1/ 1/ 1/ 1/ 1/ /4 /4 Motor RPM ➀ Ratings shown are for elevations up to,000 ft. For elevations above,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level (in Canada see rating plate). Reduction of ratings requires use of a high altitude kit. ➁ Data taken at 65 F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods. ➂ All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor manufacturer and Modine. All motors are totally enclosed and all single phase motors have built-in thermal overload protection. Table 5. - Model PTC Operating Electrical Data ➄ Supply Voltage 115V 1 Phase 08V 1 or Phase 0V 1 or Phase 460V Phase 575V Phase Power Code 01 (115V) 01 (115V) with Transformer 01 (115V) with Transformer 01 (115V) with Transformer 01 (115V) with Transformer Model PTC Sizes Motor Amps Total Amps Transformer kva n/a n/a n/a n/a n/a n/a n/a n/a n/a n/a 08V Total Amps Transformer kva V Total Amps Transformer kva V Total Amps Transformer kva V Total Amps Transformer kva ➄ Amp draw data shown is operating amp draw at incoming power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code

6 GENERAL PERFORMANCE AND ELECTRICAL DATA - MODEL BTC Table Blower Unit Heater Model BTC General Performance Data Model BTC Sizes Btu/Hr Input ➀ 15,000 60,000 10,000 Btu/Hr Output ➀ 199,950 41,800 88,00 Condensate Production (Gal./Hr.) Entering Airflow Range (CFM) Outlet Velocity (FPM) ➁ Air Temp. Rise ( F) Max. Mounting Height (Ft.) ➁ Heat Throw Max. Mtg Ht Motor Type ➂ TE TE TE Motor HP See Table 7.1 Motor RPM Table 6. - Blower Model BTC Motor Amp Draw ➃ ➄ Supply Voltage Motor HP 115V/1ph 0V/1ph 08V/ph 0V/ph 460V/ph 575V/ph / Table 6. - Blower Model BTC Control Circuit Amp Draw ➃ ➄ Supply Voltage Model Size 115V/1ph 0V/1ph 08V/ph 0V/ph 460V/ph 575V/ph Table Blower Model BTC Accessory Transformer Size (kva) ➅ Supply Voltage Model Size 08V/ph 0V/1 or ph 460V/ph 575V/ph ➀ Ratings shown are for elevations up to,000 ft. For elevations above,000 feet, ratings should be reduced at the rate of 4% for each 1,000 feet above sea level (in Canada see rating plate). Reduction of ratings requires use of a high altitude kit. ➁ Data taken at 65 F ambient and unit fired at full-rated input. Mounting height as measured from bottom of unit, and without deflector hoods. ➂ All motors used are produced, rated and tested by reputable manufacturers in accordance with NEMA standards and carry the standard warranty of both the motor manufacturer and Modine. All motors are totally enclosed and all single phase motors have built-in thermal overload protection. ➃ Amp draw data shown is operating amp draw at incoming power. For units that use a field installed accessory step-down transformer as noted, the amp draw shown is the primary side operating amp draw. For sizing of circuit protection for equipment with transformers, please refer to the National Electric Code. ➄ For BTC models, add the Motor Amp Draw and Control Circuit Amp Draw to get the Total Unit Amp Draw. ➅ Transformers for blower models are typically smaller than those used for propeller models, as the transformer is not needed for the blower motor. Size 10 uses a PSC power exhauster motor, further reducing the required transformer size

7 BLOWER performance data - MODEL BTC Table Power Code Description - Blower Model BTC ➀ Power Code ➀ For selection of correct Power Code, refer to the tables on page 9. BTC15 BTC60 BTC10 Voltage Phase HP Drive HP Drive HP Drive 0 115/ / / / / / / 6 1-1/ / / / / / / / / 6 1 0/ / / / / / / / / / / / / / / / / / / / / / / / / / / / / / / 67 Table 7. - Filter Static Pressure Drop BTC15 BTC60 BTC10 Filter Static ( W.C.) ➁ Calculated at 55 F ATR, for blower units with enclosure and filter, add filter static to external static pressure

8 THIS PAGE INTENTIONALLY LEFT BLANK

9 BLOWER PERFORMANCE DATA - MODEL BTC Table Blower Model BTC15-10 Model Size External Static Pressure ( W.C.) ATR CFM HP RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns RPM Drive Turns HP / 1-1/ / 1-1/ / / / / / / / / / / / 1-1/ / / / / Table 9. - Alternate Drives for 115/0V 1 Ph, 1 HP Motors Model BTC15 1 HP Drive Listed 1 HP Drive for 115/0V 69 = 70 7 = 7 75 = = 77 Table 9. - Alternate Drives for 115/0V 1 Ph, 1-1/ HP Motors Model BTC15 BTC60 BTC10 1-1/ HP Drive Listed 1-1/ HP Drive for 115/0V 69 = 70 7 = 7 6 = = 6 67 = 66 6 = = 6 67 = 66 ➀ Outputs shown are for elevations up to 000'. For elevations over 000, output needs to be reduced 4% for each 1000' above sea level. (Does not apply in Canada - see rating plate). ➁ Sheave turns open are approximate. For proper operation, check blower rpm. ➂ For 115/0V (1 HP and 1-1/ HP) selections, see Tables 9. & for the corrected Drive Number. 9

10 electrical selection details - all models Table Electrical Selection Details - All Models Model Supply Voltage Phase Motor Voltage Required Accessory Transformer ➀ Power & Gas Control Circuit Transformer Voltages Factory Installed Transformer Motor Starter Coil Voltage PTC BTC none 08 08V to 115V 1 or 0 115V/1ph 0V to 115V V to 115V V to 115V V/1ph none 08 08V/1ph 08V to 115V 1 0 0V/1ph 0V to 115V 08 08V/ph 08V to 115V 0 0V/ph 0V to 115V V/ph 460V to 115V V/ph 575V to 115V 115V/1ph 115 to 4V none none 115V/1ph 115 to 4V 115V ➀ For accessory transformer sizing, refer to Table 5. for model PTC and Table 6.4 for model BTC. Table Gas Controls All Models ➀ Model Size Control System Description Gas Type Control Code Control Voltage Single-Stage, Direct Spark Ignition Utilizes a single-stage combination gas control and an ignition control. Gas is automatically lit with the direct spark igniter on call for heat. Natural 11 Propane 1 4V ➀ All ignition controls are 100% Shut-Off with Continuous Retry

11 ACCESSORIES Table Field Installed Accessories Cabinet and Air Mover Controls Condensate Handling Venting Feature Vertical Deflector Blades - Allows directional discharge air control in the left and right directions. Downward Air Deflector Hoods - Available in 0, 60, and 90 configurations these deflector hoods provide more focused air flow control. Refer to page 1 for further details. Two-Point Suspension Kits - Converts from 4-point suspension to -point suspension. Fingerproof Fan Guard - Ships installed on unit in place of standard guard (standard on size 110 and smaller). Pipe Hanger Adapter Kits - Allows the unit to be suspended by /4" pipe from the standard /8" holes found in the top of the unit. Discharge Transition for Polytube - Allows for the connection of polytube (not included) to the discharge of the unit. Blower Enclosure with or without Filter Rack - Totally encases the motor and blower assembly. Optional filters provide filtering of the air prior to entering the heater. Belt Guard - Provides protection for building occupants as well as service people from the drive belt and sheaves. Natural Gas to Propane Gas Conversion Kit - All required parts to convert a natural gas unit to propane gas. Energy Saver Thermostats - Mounted high and independent of the room stat, this control turns on the unit heater fan if high temperatures are sensed, forcing the heated air down, reducing stratification and potentially gas usage. SPDT switch, range V. Honeywell T61A111. Single-Stage Room Thermostats - See Table 11. for details. Stepdown Transformers - Used to operate units on 08V, 0V, 460V, or 575V supply voltage. Refer to Table 10.1 for further selection details. Condensate Pump - Used for high lift applications of up to - DiversiTech CP- Condensate Pump Suspension Kit - Used to suspend/support pump (DiversiTech CP-) from heater. Condensate Treatment - Controls slime growth in pump (DiversiTech CP-) and downstream drain. Condensate ph Neutralizing Kit - Reduces acidity of condensate. Recharge Kit for ph Neutralizing Kit - Aggregate material to recharge the ph Neutralizing kit (once per year or every 000 hours). Horizontal Concentric Vent Kit - Enables horizontal concentric venting. Kit consists of one concentric adapter, one vent termination screen, and one inlet guard assembly (See Figure 11.1). Vertical Concentric Vent Kit - Enables vertical concentric venting. Kit consists of one concentric adaptor, one combustion air inlet cap, and two vent pipe terminal screens (See Figure 11.). Termination screens for horizontal or vertical, -pipe system terminals. Terminals are by others. PTC Model BTC Figure Horizontal Concentric Vent Kit Figure Vertical Concentric Vent Kit VENT TERMINAL ASSEMBLY PVC VENT TERMINAL (ELBOW) inlet terminal From unit vent connection to unit combustion air intake connection inlet guard assembly concentric vent adapter concentric vent adapter from unit vent connection to unit combustion air intake connection Table Field Installed Thermostats Single-Stage Room Thermostats Duct Thermostats (BTC Only) Description WHITE-RODGERS 1C F temperature range, 0.15 to 1. amps adjustable heat anticipator WHITE-RODGERS 1C Same as 1C0-101 above except adds Heat/Off/Cool and Fan On/Auto switches HONEYWELL TH50D109 digital non-programmable room stat with switching - range F Johnson Controls A50 Electronic Temp Control with Sensor and S50 Stage Adder Honeywell T678A foot capillary tube

12 PERFORMANCE DATA - DEFLECTOR HOODS Figure 1.1-0, 60, & 90 Deflector Hoods Figure Hood Throw/Floor Coverage 0 HOOD 60 HOOD 90 HOOD H Figure & 60 Hood Throw/Floor Coverage 0 DOWNTURN 60 DOWNTURN S S MOUNTING HEIGHT 60 0 Table 1. - Deflector Hood General Performance Data - Model PTC X 60 DOWNTURN Y X Z 0 DOWNTURN Note: X = Feet from Heater to Start of Floor Coverage Y = Feet to End of Floor Coverage Z = Feet to End of Throw Table Deflector Hood General Performance Data - Model BTC Model Size Airflow Temp Rise Mounting Blade Height Angle Y 0 Hood 60 Hood Z 90 Hood X Y Z X Y Z S (CFM) ( F) (ft) ( ) (ft) (ft) (ft) (ft) (ft) (ft) (ft) Note: Refer to Figures 1.1 through Model Size Airflow Temp Rise Mounting Height Blade Angle 90 0 Hood 60 Hood Hood X Y Z X Y Z S (CFM) ( F) (ft) ( ) (ft) (ft) (ft) (ft) (ft) (ft) (ft) Note: Refer to Figures 1.1 through 1..

13 SELECTION EXAMPLE - MODEL Ptc (propeller UNIT) Selection Procedure In order to properly select a unit heater it is necessary to have the following basic information. 1. Heating output capacity Model size output is to be matched against the heat loss to be replaced.. External static pressure (blower units only) The external static pressure (E.S.P.) is determined using the ASHRAE Guide for duct losses or provided by the design engineer.. Accessory internal static pressure (transitions, filters, etc.) (blower units only) The critical accessories are those that add internal static pressure (I.S.P.) to the unit. Once these items are determined, the total pressure drop can be determined (if applicable). 4. Heat exchanger material The heat exchanger type is determined by the application. The standard heat exchanger material is aluminized steel. A 409 stainless steel heat exchanger is recommended when the combined entering/return air to the unit is below 40 F or in high humidity applications. 5. Type of fuel Either natural or propane gas determined by the design engineer. 6. Gas controls Single stage, as determined by the design engineer. 7. Main power supply voltage to unit 8. Altitude at which unit is to be installed Selection Example (Propeller Unit) Selection Example Conditions (Propeller Unit) Select a unit heater to meet the following conditions: 1. Heating output capacity = 166,000 Btu/Hr per design engineer. External static pressure = 0.0. Internal statuic pressure = 0.0. No static producing accessories are required. 4. Heat exchanger = 409 Stainless Steel 5. Gas Type = Natural 6. Gas Controls = Single Stage 7. Supply Voltage: 460V/60Hz/Ph 8. Altitude: 1,000 feet With the information listed above, the basic model, using the information in this catalog and the Model Nomenclature shown on page 19, can be selected as shown: 1. Determine the Model and Input Rating (MBH): Using the Heating output capacity, the Furnace Input Rating is determined from Table 5.1. The closest model to 166,000 Btu/Hr output has an Btu/Hr Input rating of 180,000 Btu/Hr so the Furnace Input Rating = 180. The corresponding model for a 180 size, propeller, separated combustion unit heater is PTC. The model and size are a PTC180.. Determination of Heat Exchanger Material: From item #4 in the example, the Heat Exchanger required is 409 Stainless Steel. Thus, the Heat Exchanger Material = S from the Model Nomenclature on page 19.. Determine the Ignition Type: The Ignition Type = S from the Model Nomenclature on page Determine Power Code Required: Referring to Table 5., it can be seen that the supply voltage from the example conditions is not available (460V). A transformer kit selected later in this example must be used. In this instance, from Table 5. select the 115V/60Hz/1Ph power code (PC) = 01 unit. 5. Determine the control type: From items #4 and #5 in the example conditions, the gas type is Natural Gas and controls are Single Stage. From Table 10., we are directed to use Control Code (CC) 11. At this point we have a full model number of PTC180SS Determination of transformer: To operate a 115V/60Hz/1Ph unit on 460V/60Hz/Ph supply power a unit step down transformer must be selected. By referring to Table 10.1 we see that a 460V to 115V step down transformer is required. As noted in the footnote for Table 10.1, the size can be determined to be 1.0kVA from Table Altitude: Since deration of gas fired unit heaters is only required for units to be installed at,000 ft or greater, no high altitude kit is required

14 SELECTION EXAMPLE - MODEL btc (BLOWER UNIT) Selection Example (Blower Unit) Selection Example Conditions (Blower Unit) Select a unit heater to meet the following conditions: 1. Heating output capacity = 195,000 Btu/Hr per design engineer. External Static Pressure = 0... Internal Static Pressure = 0.0. No static producing accessories are required at this point, but filters may be added later. 4. Heat exchanger = Aluminized Steel 5. Gas Type = Propane 6. Gas Controls = Single-Stage, Direct Spark Ignition 7. Supply Voltage: 0V/60Hz/Ph 8. Altitude: 1,000 feet 9. CFM =, Altitude: Since deration of gas fired unit heaters is only required for units to be installed at,000 ft or greater, no high altitude kit is required. With the information listed above, the basic model, using the information in this catalog and the Model Nomenclature shown on page 19, can be selected as shown: 1. Determine the Model and Input Rating (MBH): Using the Heating output capacity, the Furnace Input Rating is determined from Table 6.1. The closest model to 195,000 Btu/Hr output has an Btu/Hr Input rating of 15,000 Btu/Hr so the Furnace Input Rating = 15. The corresponding model for a 15 size, blower, separated combustion unit heater is BTC. The model and size are a BTC15.. Determination of Heat Exchanger Material: From item #4 in the example, the Heat Exchanger required is aluminized steel. Thus, the Heat Exchanger Material = A from the Model Nomenclature on page 19.. Determine the Ignition Type: The Ignition Type = S from the Model Nomenclature on page Determine Power Code Required: From page 7 we see that a unit requiring a static of 0. and a cfm of 600 requires a 1 horsepower motor with a -75 drive that is turned open turns. Referring to Table 7.1 it can be determined that for a BTC15 with a 1HP motor and a -75 drive operating on 0V/60Hz/Ph that it will have a power code = 79. However, note that if filters are added later, that drive/motor combination will not be sufficient. One alternate drive selection could have been made with a 1HP motor with a -76 drive. The power code would be Determine the control type: From items #5 and #6 in the example, the gas type is Propane Gas and controls are Single-Stage. From note ➅ on page 4, we are directed to use Control Code (CC) = 1. At this point we have a full model number of BTC15AS Determination of Transformer: To operate the BTC15AS791 on 0V/60Hz/ph supply voltage, we need to review Table 10.1 to determine if any field installed transformers are required. The table indicates that we need a 0V to 115V step down transformer for the power exhaust and gas control circuit voltage. As indicated in the footnote for that table, Table 6.4 directs us to the correct size for this model, which is 0.5kVA. Transformers for blower models are typically smaller than those used for propeller models, as the transformer is not needed for the blower motor

15 DIMENSIONAL DATA - MODEL PTC Figure Dimensional Drawings - Model PTC ADJUSTABLE LOUVERS Q (MINIMUM DISTANCE TO WALL) (4) /8"-16 MTG HOLES N P A KNOCKOUTS FOR SUPPLY POWER WIRING CONDUIT ENTRANCE ACCESS PANEL E (OPENING) B M COMBUSTION AIR INLET VENT OUTLET GAS CONN. J K L C R (APPROX.) FAN CONDENSATE DRAIN /4" PVC D (OPENING) H G F I Table Dimensions (inches) Models PTC 55 PTC 65 PTC 85 PTC110 PTC15 PTC156 PTC180 PTC 15 PTC60 PTC10 A B C D E F G H I J K L M N P Q R Combustion Air Inlet Pipe Vent Outlet Pipe Gas Connection 1/ 1/ 1/ 1/ 1/ 1/ 1/ /4 /4 /4 Fan Diameter Approx. Shipping Weight (lbs.) Table Clearances - Sizes 110 and Below Table Clearances - Sizes Unit Side Clearance To Recommended Unit Side Clearance To Recommended Combustible Materials Service Clearance Combustible Materials Service Clearance Top and Bottom 1" 1" Top and Bottom 6" 6" Access Side 1" 18" Access Side 6" 18" Non-Access Side 1" 18" Non-Access Side 6" 18" Rear 18" 18" Rear 18" 18" Vent Connector 6" 6" Vent Connector 6" 6"

16 DIMENSIONAL DATA - MODEL BTC Figure Dimensional Drawings - Model BTC ADJUSTABLE LOUVERS (6) /8"-16 MTG HOLES V BLOWER ENCLOSURE (OPTIONAL) 4.88 FILTER RACK (OPTIONAL) 7/8" N W P X A KNOCKOUTS FOR SUPPLY POWER WIRING CONDUIT ENTRANCE E (OPENING) T x U B M ACCESS PANEL COMBUSTION AIR INLET VENT OUTLET GAS CONN. J I K L C R (APPROX.) S CONDENSATE DRAIN /4" PVC F G Q (MIN DIST TO WALL) D (OPENING) H Table Dimensions (inches) - BTC Models BTC 15 BTC60 BTC10 A B C D E F G H I J K L M N P Q (w/blower Encl & Filter Rack) Q (w/o Blower Encl & Filter Rack) R ➀ S T U V W X Combustion Air Inlet Pipe Vent Outlet Pipe Gas Connection /4 /4 /4 Blower Approx. Shipping Weight (lbs.) ➀ This is an approximate dimension for standard motors, allow " for sheave and optional motors

17 SPECIFICATIONS - ALL MODELS Note: Specifications below are extracted from a master gas-fired unit heater specification and therefore certain numbered sections have been intentionally omitted. General A. Standards All unit(s) shall include: A.. ETL design certification for use in both the US and Canada to the ANSI Z8.8 - latest revision, standard for Gas Unit Heater and Gas-Fired Duct Furnaces for safe operation, construction, and performance. B. Mechanical Configuration B.. Condensing furnace section with 9% minimum efficiency provided by an indirect-fired tubular heat exchanger with individually fired tubes coupled to a secondary recuperative heat exchanger for maximum heat recovery. C. Venting/Combustion Air Arrangement C.4. The unit shall be separated combustion. The venting shall be a power exhausted arrangement with a separate combustion air intake pipe connection to allow for fresh combustion air from outside the conditioned space. The unit shall be tested to insure proper ignition when the unit is subjected to 40 mile per hour wind velocities. The unit shall also include a factory mounted differential pressure switch designed to prevent main burner ignition until positive venting has been proven. Venting shall be Schedule 40 PVC. For Canadian installations, all vent pipe and components must be approved to ULC S66. D. Unit Casing D.1. The unit heater(s) casing shall be constructed of not less than 0 gauge aluminized steel with minimization of exposed fasteners. D.. All exterior casing parts casing parts shall be cleaned of all oils and a phosphate coating applied prior to painting. The exterior casing parts shall then be painted with an electrostatically applied baked-on gray-green polyester powder paint (7-mil thickness) for corrosion resistance. D.. The unit shall be furnished with horizontal air deflectors. The deflectors are adjustable to provide for horizontal directional airflow control (up or down). E.5. The ignition controller(s) shall be 100% shut-off with continuous retry. E.6. The gas pressure shall be between 6-7" W.C for natural gas (opt). The gas pressure shall be 11-14" W.C. for propane gas. E.7.a. The solid state ignition system shall directly light the gas by means of a direct spark igniter each time the thermostat calls for heat. E.8. The unit gas controls shall be provided with the following: E.8.d. Single-stage gas controls with a single-stage combination gas control, an ignition control, and a single-stage low voltage thermostat. The unit fires at 100% full fire based on a call for heat from a room thermostat. E.9. An automatic reset high limit switch mounted in the air stream to shut off the gas supply in the event of overheating. E.9.a. An automatic reset high limit switch mounted on the power exhauster housing to shut off the gas supply in the event of overheating flue gas temperatures. E.9.b. A condensate drain line overflow switch that senses if the condensate line is clogged and shuts the unit heater down. E.10. A time delay relay that delays the start of the air mover to allow the heat exchanger a warm-up period after a call for heat. The time delay relay shall also continue the air mover operation after the thermostat has been satisfied to remove any residual heat on the heat exchanger. E.11. The unit shall be orificed for up to 000' elevation above sea level (opt the unit shall be orificed for elevation above sea level). F. Electrical F.1. All electrical components shall carry UL, ETL, or CSA listing. F.. Low voltage terminal board. F.. A single 115V to 4V step down transformer shall be provided for all unit controls. E. Furnace Section E.1.e. The primary heat exchanger(s) shall be made of 18 gauge aluminized steel (opt 409 stainless steel) tubes and headers. Each heat exchanger tube shall be individually and directly flame-fired. The heat exchanger tube shall be crimped to allow for thermal expansion and contraction. The flue collector box shall be made of 0 gauge AL9-4C stainless steel. The thermal efficiency of the unit(s) shall be a minimum of 9% efficient for all air flow ranges through the use of a secondary recuperative heat exchanger. The secondary heat exchanger shall be constructed of AL9-4C stainless steel to withstand the corrosive environment of condensing gas fired equipment. E.. The heat exchanger(s) seams and duct connections shall be certified to withstand 0.9" W.C. external static pressure without burner flame disturbance. E..a. The burner(s) shall be in-shot type, directly firing each heat exchanger tube individually and are designed for good lighting characteristics without noise of extinction for both natural and propane gas. G. Air Mover G.1. The motor horsepower shall be. G.. The motor shall be factory wired (PTC Models). G.. The motor shall be controlled by a time delay relay. G.4. Propeller models shall meet the following requirements. G.4.a. The motor type shall be Single-speed, totally enclosed (TE) G.4.b. The motor shall be rated for: (a) 115V/60Hz/1Ph G.5. Blower models shall meet the following requirements: G.5.a. The motor type shall be single-speed, totally enclosed (TE) G.5.b. The motor shall be rated for: (a) 115V/60Hz/1Ph (b) 08V/60Hz/1Ph (BTC model) (c) 0V/60Hz/1Ph (BTC model) (d) 08V/60Hz/Ph (BTC model) (e) 0V/60Hz/Ph (BTC model) (f) 460V/60Hz/Ph (BTC model) (g) 575V/60Hz/Ph (BTC model) 17

18 SPECIFICATIONS - ALL MODELS G.5.c. The motor shall be provided with an adjustable motor sheave to allow for minor adjustment of the blower rpm at the job site. (BTC models) G.5.d. The blower shall be a double width, double inlet (DWDI), forward curved, belt driven, assembly with spider ball bearings. (BTC models) H. Mounting H.1. The unit shall be equipped with tapped holes to accept /8"-16 threaded rod for suspension. H.1.a. The unit shall be equipped with mounting brackets to allow for threaded rod suspension or to be bolted directly to the ceiling support structure allowing 1" of top clearance. (PTC models - opt on sizes ) H.. Propeller unit to have 4 suspension points. H.4. Blower unit to have 6 suspension points. J. Accessories The following field installed accessory control devices shall be provided with the unit: J.1. A 1/-50 psi gas pressure regulator to reduce the inlet gas pressure for the operating controls. J.. A clear plastic thermostat guard with two keys for room thermostats. J.4. Pipe Hanger Adapter Kit to facilitate threaded pipe suspension. J.7. Vertical Deflector Kit to enables side distribution of airflow. J.8. A blower enclosure fully encloses blower to enable the attachment of filter racks and/or duct. J.9. A combination filter rack/duct connector containing a 1" thick, cleanable filter. J.11. A belt guard enclosing the belts and sheaves (pulleys) on a blower type unit heater. (BTC models) J.1. Propane conversion kit for converting natural gas units to propane gas. J.17. Discharge transition from unit to polytube. (BTC models) J non-velocity generating downward air deflector hood constructed of 0 ga. cold rolled steel with baked-on gray-green polyester powder paint. J non-velocity generating downward air deflector hood constructed of 0 ga. cold rolled steel with baked-on gray-green polyester powder paint. J non-velocity generating downward air deflector hood constructed of 0 ga. cold rolled steel with baked-on gray-green polyester powder paint. J1. A 08V to 115V step down shall be provided for operation of the 115V unit. (PTC models) J.. A 0V to 115V step down shall be provided for operation of the 115V unit. (PTC models) J. A 460V to 115V step down shall be provided for operation of the 115V unit. (PTC models) J.4. A 575V to 115V step down shall be provided for operation of the 115V unit. (PTC models) J.5. A 08V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTC models) J.6. A 0V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTC models) J.7. A 460V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTC models) J.8. A 575V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (BTC models) J.9. A horizontal concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building wall through one opening. J.0. A vertical concentric vent kit shall be provided to allow the vent outlet and combustion air inlet pipes to penetrate the building roof through one opening. J.1. A -point suspension kit to convert the unit from 4-point mounting to -point mounting. J.. An Energy Saver Thermostat to be mounted high and independent of the room stat to turn on the unit heater fan if high temperatures are sensed, forcing the heated air down to reduce stratification and gas usage. J.. A condensate pump for high lift applications of up to. Pump shall include indicator lights to show pump status, internal vibration isolation, a check valve, condensate treatment tablet dispenser, and alarm contacts to shut the unit heater down if the pump becomes inoperable. J.4. A condensate pump suspension kit to suspend/support the pump (DiversiTech CP-) from the unit heater. J.5. Condensate treatment tablets to controls slime growth in pump (DiversiTech CP-) and downstream drain. J.6. A condensate ph neutralizing kit to reduce the acidity of condensate. Includes barbed inlet and outlet fittings, mounting brackets and an initial charge of neutralizing aggregate. J.7. A recharge kit for ph neutralizing kit. Includes sufficient aggregate for a complete recharge of the neutralizing kit. K. Thermostats The unit shall be provided with the following thermostat: K.. A single stage room thermostat with a F range. K.. A single stage room thermostat with a F range with Heat/Off/Cool and Fan On/Auto switching. K.4. Honeywell TH50D109 digital non-programmable room stat with switching - range F. K.5. A field installed two-stage duct thermostat with a F range and 0-foot capillary. K.6. A two-stage electronic duct thermostat with field installed temperature sensor, temperature selector and one stage adder

19 model nomenclature Figure Model Number Designations (Remove access cover to locate) PTC 15 A S Separated Combustion Unit Configuration PTC - Propeller Unit, MBH BTC - Blower Unit, MBH MBH Input 55-55,000 Btu/hr input 65-65,000 Btu/hr input 85-85,000 Btu/hr input ,000 Btu/hr input 15-15,000 Btu/hr input ,000 Btu/hr input ,000 Btu/hr input 15-15,000 Btu/hr input 60-60,000 Btu/hr input 10-10,000 Btu/hr input Heat Exchanger Type A - Aluminized S - Stainless Steel Control Code Type 11 - Natural gas, single stage 1 - Propane, single stage Power Code (refer to pages 5 & 7) V/60Hz/1ph 0-0V/60Hz/1ph etc. Ignition Type S - Direct Spark

20 The Modine brand has been the industry standard since Arthur B. Modine invented and patented the first lightweight, suspended hydronic unit heater in 19. No other manufacturer can provide the combined application flexibility, technical expertise and fast delivery found at Modine. Consult your local Modine distributor for help in solving your indoor air problems. Products from Modine are designed to provide indoor air-comfort and ventilation solutions for residential, commercial, institutional and industrial applications. Whatever your heating, ventilating and air conditioning requirements, Modine has the product to satisfy your needs, including: HVAC Unit Heaters: Gas Hydronic Electric Oil Ceiling Cassettes Duct Furnaces Hydronic Cabinet Unit Heaters, Fin Tube, Convectors Infrared Heaters Make-up Air Systems Unit Ventilators Ventilation Packaged Rooftop Ventilation School Products Vertical Packaged Classroom HVAC: DX Cooling/Heat Pump Water/Ground Source Heat Pump Horizontal/Vertical Unit Ventilators Geothermal Water-to-Water Water-to-Air Combination Specific catalogs are available for each product. Catalogs and provide details on all Modine HVAC equipment. Modine Manufacturing Company 1500 DeKoven Avenue Racine, Wisconsin Phone: (HEAT) Modine Manufacturing Company 01