HIGH-EFFICIENCY CONDENSING GAS-FIRED SEPARATED COMBUSTION UNIT HEATERS 6-170.
INTRODUCTION / TABLE OF CONTENTS Up to 97% thermal efficiency for all model sizes, Modine’s Effinity® 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 AL29-4C® stainless steel.
DESIGN FEATURES Figure 3.1 - Effinity® Model PTC/BTC (PTC Shown) Figure 3.2 - Modine Conservicore® Heat Exchanger SECONDARY HEAT EXCHANGER PRIMARY HEAT EXCHANGER POWER EXHAUSTER Table 3.1 - Standard Features and Factory Options ➀ Feature PTC Cabinet and Air Mover Aluminized steel cabinet (gauge indicated) 20 ga. 20 ga.
DESIGN FEATURES Figure 4.1 - Factory Mounted Standard Features ➀ 16 ➁ ➂ ➃ 18 ➄ ➅ 15 ➇ 14 13 ➀ Power Exhauster 12 11 ➉ ➈ 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.
GENERAL PERFORMANCE AND ELECTRICAL DATA - MODEL PTC Table 5.1 - Propeller Unit Heater Model PTC General Performance Data Model PTC Sizes 55 65 85 110 135 156 180 215 260 310 Btu/Hr Input 55,000 65,000 85,000 110,000 135,000 155,000 180,000 215,000 260,000 310,000 102,300 125,500 144,150 167,400 199,950 241,800 288,300 Btu/Hr Output 51,150 60,450 79,050 Condensate Production (Gal./Hr.) 0.3 0.4 0.5 0.7 1.0 1.1 1.3 1.6 1.9 2.
GENERAL PERFORMANCE AND ELECTRICAL DATA - MODEL BTC Table 6.1 - Blower Unit Heater Model BTC General Performance Data Model BTC Sizes 215 260 310 Btu/Hr Input j 215,000 260,000 310,000 Btu/Hr Output j 199,950 241,800 288,300 Condensate Production (Gal./Hr.) 1.6 1.9 2.3 Entering Airflow Range (CFM) 2645-4628 3198-5597 3813-6674 Outlet Velocity (FPM) k 497-826 601-999 559-930 Air Temp. Rise (°F) 40-70 40-70 40-70 Max. Mounting Height (Ft.) k 9-22 11-26 11-26 Heat Throw (Ft.
BLOWER PERFORMANCE DATA - MODEL BTC Table 7.
THIS PAGE INTENTIONALLY LEFT BLANK 8 6-170.
BLOWER PERFORMANCE DATA - MODEL BTC Table 9.1 - Blower Model BTC215-310 0.
ELECTRICAL SELECTION DETAILS - ALL MODELS Table 10.
ACCESSORIES Table 11.1 - Field Installed Accessories Model Venting Condensate Handling Controls Cabinet and Air Mover Feature PTC BTC Vertical Deflector Blades - Allows directional discharge air control in the left and right directions. Downward Air Deflector Hoods - Available in 30°, 60°, and 90° configurations these deflector hoods provide more focused air flow control. Refer to page 12 for further details. Two-Point Suspension Kits - Converts from 4-point suspension to 2-point suspension.
PERFORMANCE DATA - DEFLECTOR HOODS Figure 12.1 - 30°, 60°, & 90° Deflector Hoods 30° HOOD Figure 12.3 - 90° Hood Throw/Floor Coverage H 90° HOOD 60° HOOD Figure 12.2 - 30° & 60° Hood Throw/Floor Coverage S 30 DOWNTURN 60 DOWNTURN 30 Table 12.2 - Deflector Hood General Performance Data - Model PTC 60 MOUNTING HEIGHT X 60 DOWNTURN Y X Z Y 30 DOWNTURN Z Note: X = Feet from Heater to Start of Floor Coverage Y = Feet to End of Floor Coverage Z = Feet to End of Throw Table 12.
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. 2. 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. 3.
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 2. External Static Pressure = 0.2. 3. 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 7.
DIMENSIONAL DATA - MODEL PTC Figure 15.1 - Dimensional Drawings - Model PTC KNOCKOUTS FOR SUPPLY POWER WIRING CONDUIT ENTRANCE ADJUSTABLE LOUVERS Q (MINIMUM DISTANCE TO WALL) 3.56 14.90 A N (4) 3/8"-16 MTG HOLES P ACCESS PANEL M COMBUSTION AIR INLET E (OPENING) B VENT OUTLET GAS CONN. L K J FAN C F CONDENSATE DRAIN 3/4" PVC R (APPROX.) I G H D (OPENING) Table 15.1 - Dimensions (inches) Models PTC 55 PTC 65 PTC 85 PTC110 PTC135 PTC156 PTC180 PTC 215 PTC260 PTC310 A 29.80 29.
DIMENSIONAL DATA - MODEL BTC Figure 16.1 - Dimensional Drawings - Model BTC BLOWER ENCLOSURE (OPTIONAL) 4.88 FILTER RACK (OPTIONAL) 7/8" (6) 3/8"-16 MTG HOLES ADJUSTABLE LOUVERS 3.56 V 14.90 A N W KNOCKOUTS FOR SUPPLY POWER WIRING CONDUIT ENTRANCE P X ACCESS PANEL M COMBUSTION AIR INLET TxU E (OPENING) VENT OUTLET B GAS CONN. L K J I C S CONDENSATE DRAIN 3/4" PVC R (APPROX.) Q (MIN DIST TO WALL) D (OPENING) Table 16.1 - Dimensions (inches) - BTC Models BTC 215 BTC260 BTC310 A 42.
SPECIFICATIONS - ALL MODELS Note: S pecifications below are extracted from a master gas-fired unit heater specification and therefore certain numbered sections have been intentionally omitted. General E.5. A. Standards All unit(s) shall include: A.2. ETL design certification for use in both the US and Canada to the ANSI Z83.8 - latest revision, standard for “Gas Unit Heater and Gas-Fired Duct Furnaces” for safe operation, construction, and performance. B. Mechanical Configuration B.3.
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) J.26. A 230V to 115V step down shall be provided for operation of the 115V power exhauster and control circuit. (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) J.27.
MODEL NOMENCLATURE Figure 19.
The Modine brand has been the industry standard since Arthur B. Modine invented and patented the first lightweight, suspended hydronic unit heater in 1923. No other manufacturer can provide the combined application Products from Modine are designed to provide indoor air-comfort and ventilation solutions for residential, commercial, institutional and industrial applications.
