Cabinet Unit Heaters Steam / Hot Water

11-160.4 February, 2005 Cabinet Unit Heaters Steam / Hot Water Model C

MODEL IDENTIFICATION Table of Contents I. Model Identification... 3 Page Il. IIl. III. IV. Design Benefits A. Features and Benefits... 4 B. Factory Mounted Options...5 C. Field Installed Accessories... 6 Performance Data A. Hot Water Sample Sizing Calculations... 7 B. Hot Water Correction Factors...8-9 C. Hot Water Performance Data (Single Row Coil)... 10 D. Hot Water Performance Data (Two Row Coil)... 11 E. Steam Sample Sizing Calculations... 12 F. Steam Correction Factors... 13 G. Steam Performance Data... 14 H. Mounting Height Correction Factors... 15 Model Dimensional / Motor Data A. Model C - Floor Mounted Units... 16 B. - Wall Mounted Units... 17 C. Duct Collar Dimensional Data... 18 Specifications A. Unit Data Specifications... 19 B. Unit Mechanical Specifications... 19 C US As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice. 2

MODEL IDENTIFICATION Figure 3.1 Model C - Exposed Floor Mounted Unit Figure 3.2 - Exposed Wall or Ceiling Mounted Unit Figure 3.3 - Recessed (full or partial) Wall or Ceiling Mounted Unit Shown with optional Perma-Lap Frame Figure 3.4 Standard Air Flow Options Floor Mounted Figure 3.5 Inverted Air Flow Options Floor Mounted Model C Arrangement 06 Wall Mounted Model C Arrangement 08 Model C Arrangement 06 with Fresh Air Option (Refer to Option Descriptions) Model C Arrangement 08 with Fresh Air Option (Refer to Option Descriptions) Arrangement 96 Wall Mounted Arrangement 98 Arrangement 00 Arrangement 06 Arrangement 07 Arrangement 08 Arrangement 90 Arrangement 97 Ceiling Mounted Arrangement 50 Arrangement 56 Arrangement 57 Arrangement 58 Recessed Floor➂ Recessed Wall➂ Recessed Ceiling➂ Arrangement 96 Recessed Floor➂ Arrangement 98 Recessed Wall➂ Arrangement 08 Arrangement 08 Arrangement 58 Arrangement 98 Arrangement 98 Figure 3.6 - Model Nomenclature Model Type C = Floor Unit CW = Exposed, Recessed or Ceiling Unit Arrangement 0 = Wall or Floor 5 = Ceiling 9 = Inverted CW 0 6 3 Perma-Lap frame available for recessed units. Airflow Direction 0 = Bottom in, Top Out 6 = Front In, Top Out 7 = Bottom In, Front Out 8 = Front In, Front Out 3

FEATURES AND BENEFITS ➀ ➂ ➇ ➁ ➄ ➅ ➃ ➃ ➈ ➉ ➆ Product Features and Benefits Feature 1. One-Piece Cabinet Top and Sides 2. Wrap-Around Partitions and Back Sheet 3 All-Welded Construction 4. Cabinet End Pockets 5. Cabinet Finish 6. Quick-Change Permanent Filters 7. Insulation 8. Coils Steam/Hot Water 9. Power Assembly 10. Speed Control 11. Access Doors (not shown) Benefits 1. Cabinet top and sides are formed from a single sheet of 18 gauge steel reducing the number of parting lines common to multi-piece construction. Fronts are 16 gauge. All louvers are stamped as standard. 2. Inner partition panels and back sheet are die-formed from a single sheet of 18 gauge steel. This assures precision fit and alignment of all internal components and maximum cabinet rigidity. 3. Cabinet unit heaters utilize five to eight structural components in the basic cabinet. The components are fixture-aligned and welded. 4. The two cabinet end pockets provide ample space for convenient installation of piping and electrical wiring. Easy access reduces costs and installation time. 5. After assembly and welding operations are completed, the entire cabinet unit is treated for prevention of rust and corrosion. Entire cabinet is finished with a tan color, baked on enamel finish, which may be used as a final coat or repainted. 6. Filters are removable without tools. After opening the unit s front panel, the filter easily slides out. Cleanable filters are provided as standard. 7. Sound dampening insulation on all front panels. 8. All coils used in cabinet heaters use copper tube, aluminum fin construction with NPT connections; 3/4 for sizes 2 thru 6, and 1 for sizes 8 thru 14. Tubes are mechanically expanded into integral fin collars. Return bends and joints are silver alloy brazed and the coil is pressure-tested to 200 psi pressure. Field reversible coils allow piping to be made for left or right side connection, with left hand piping as factory standard. 9. Blower platform, blower, and blower motor on all sizes are removable as a single unit. A direct drive, multi-speed, shaded pole motor with built in thermal overload protection powers the forward curved aluminum blower wheels. Right hand electrical as factory standard. 10. Solid state infinite speed control with off position. 11. Tilt type access doors standard on model C units. 4

FACTORY MOUNTED OPTIONS Table 5.1 Unit Equipment Options Option No. Description Piping Options 101 2-Row High Capacity Coil, for use with water only. See page 11 for performance data. 110 Right Hand Piping, Left Hand Electrical. Electrical Options 140 Permanent Split Capacitor (PSC) Motor. Rated 115V/60Hz/1ph. Offers reduced electrical consumption over standard shadedpole motor. See page 19 for motor performance data. 141 High Static Motor. Rated 115V/60Hz/1ph. Used to overcome up to 0.4 W.C. external static pressure. 142 Plug-In Motor. Allows removal of motor(s) or fan board without unwiring unit. 147 Disconnect Switch. On-Off DPST toggle switch to disconnect electric power (hot and neutral lines) to unit. Located in electrical end compartment. See Figure 6.3. 150 Unit Mounted Return Air Thermostat. Temperature sensing bulb is located in return air stream. Temperature set point range 55 to 90 F, rated 115V. Not for use with inverted air flow arrangements. Normally used with a control valve (see Accessories). See Figure 6.3. Access Door Options 112 Access Doors for. Two doors per unit. 114 Front Panel Tamper Proof Fasteners. Includes tool for fasteners. 115 Key Locks on Access Doors. Two locks per unit. requires Option 112. Especially valuable for units located in public place; these key locks make unit controls tamper-proof. 116 Key Locks on Front Panel. Two per unit, one for each door. Especially valuable for units located in public place; these key locks make unit controls tamper-proof. Air Inlet Options 117 Aluminum Bar Grille at Air Inlet. Bar grille replaces louvers. 12 gauge extruded aluminum. 122 100% Air Inlet Duct Collar. Collar width is 1 for securing ductwork and is located at the bottom inlet, except on Arrangement 9 (inverted) where it is located at the top inlet. 124 Model C 25% Outside Air Inlet Duct Collar, Collar width is 1 for securing ductwork and is located at the rear inlet. 125 Model C 100% Outside Air Inlet Duct Collar, Collar width is 1 for securing ductwork and is located at the rear inlet. 134 Model C 25% Manual Outside Air Inlet Damper. A rear inlet, single damper to permit 0% to 25% of unit CFM as outside air. Operated by a manual knob located in end compartment. 135 Model C 100% Manual Outside Air Inlet Damper. A rear inlet, single damper to permit 0% to 100% of unit CFM as outside air. Operated by a manual knob located in end compartment. 136 Model C 100% Outside/Inside Air Motorized Damper. Allows outside or inside air using 115V electric stall motor and outside/inside changeover switch. 137 Model C 25% Outside Air/100% Inside Air Motorized Damper. Allows 25% outside air or 100% inside air using 115V electric stall motor and outside/inside changeover switch. Air Outlet Options 118 Aluminum Bar Grille at Air Outlet. Bar grille replaces louvers. 12 gauge extruded aluminum. 138 Two Way Adjustable Louvers. Allows lateral air deflection. Louvers mount under aluminum bar grille. Requires Option 118. 123 100% Air Outlet Duct Collar, 1 high mounted to unit air outlet. Top outlet on model CW, bottom outlet on inverted model CW. Miscellaneous Options 120 Decorator Color, optional paint color from color chart 11-405. 129 Leveling Bolts, allows leveling of unit on uneven floors. (Model C only) Figure 5.1 Option 114 - Tamper Proof Screws Option 115 - Key Lock Figure 5.2 Option 138 - Two-Way Adjustable Louvers (shown with Option 118 Aluminum Bar Grille) Figure 5.3 Option 129 - Leveling Bolts 5

FIELD INSTALLED ACCESSORIES Motor Starter Toggle switch starter with thermal overload and off position. If overload trips, starter must be reset by turning switch to off, then back to on position. Two and Three Way Electric Valves Installs to unit supply piping in piping end compartment. Opens and closes in conjunction with starting and stopping of blower motor(s) on thermostat demand, 115 volt, brass body. Model sizes 2 thru 6 use 3/4" NPT, sizes 8 thru 14 use 1" NPT. Can be used with option 150, unit mounted return air thermostat or wall thermostat. Select wall thermostat from accessory list. System pressure not to exceed 15 psi. Three-way valve adds bypass of water or steam. Modulating Non-electric Valve Installs to unit supply piping in piping end compartment. Modulates hot water or steam flow in response to return air temperature, integral set point adjustment with remote sensing bulb located in return air stream. Responds to small changes in temperature. Requires constant blower operation. Modulating control reduces energy consumption and eliminates overheating. Temperature control range 48-83 F. Straight through style valve, brass body. Unit sizes 2 thru 6 use 3/4" NPT, sizes 8 thru 14 use 1" NPT. System pressure not to exceed 15 psi. Figure 6.1 Perma-Lap Frames Perma-Lap Frames The Perma-Lap frame is a field installed accessory that can be used to recess model CW cabinet unit heaters. Units can be fully or partially recessed. The unit is framed in the recess providing permanent contact with any wall or ceiling whether it is a smooth, rough or irregular surface. This permanent bond does not permit air leakage, which can cause wall streaking. The front panel of the unit is never in contact with the wall or ceiling, so servicing is never a problem. The Perma-Lap frame has a 3/8" projection and a 1-1/2" width. Aquastat Delays blower motor(s) operation until coil is hot to prevent cold air delivery on start-up. Installs on return pipe in piping end compartment. Temperature set point range 100-240 F, 10 amps @ 115 volts, 10 F differential, non-adjustable. Figure 6.3 Unit Mounted Return Air Thermostat & Solid State Speed Control (factory installed) Figure 6.2 Two Way Electric Valve Figure 6.4 Outside Air Wall Box A B Model Size A B 2-6 15 7 /8" 6" 8-14 23 5 /8" 6" 6

SAMPLE SIZING CALCULATIONS - HOT WATER General Selection Procedure Selection of a cabinet unit heater requires the following information: 1) room heat loss; 2) heat loss due to ventilation load if outside air is introduced; 3) entering water temperature; 4) entering air temperature; 5) water flow rate and/or final water temperature; 6) required air circulation. Final selection of a cabinet unit heater is based on the following factors: Coil selection Unit size Model type Air flow arrangement Options and accessories Coil Selection Generally, unit size is determined by the coils capacity to offset the design heat loss. Capacities of the standard and high capacity coils overlap, thereby making it possible to select the most economical coil for application requirements. The descriptions which follow illustrate the differences between the coils. Standard Coil (one row) - This coil will meet the vast majority of heating-application requirements. Maximum operating pressure: 200 psig water at 250 F. This coil is suitable for steam or hot water. High-Capacity Coil (two row) - Designed for use where the design load exceeds the capacity of the standard coil for a given size. This can be especially valuable where installation space is limited, since it will usually permit a smaller unit size to meet design requirements. The high-capacity coil will provide increased capacity over the standard coil in the same unit. The extra capacity of this coil may also allow use of lower water temperatures than the standard coil. Maximum operating pressures: 200 psig water at 250 F. High capacity two row coil not suitable for steam applications. Unit Size Cabinet unit heaters should be selected to offset room heat loss. Normally selection is made on the basis of high fan speed. This insures use of the smallest, most economical unit. Selections made in this manner will normally satisfy room heating requirements at lower fan speeds, except during periods of extreme weather. Hot Water Selection Hot water heating capacities for cabinet unit heaters are based on standard conditions of 200 F entering water temperature (EWT), 60 F entering air temperature (EAT), and a 20 F water temperature drop (WTD). Conversion factors for other than standard conditions are listed in Table 8.1 on page 8. See formulas, page 9. An alternate method of unit selection at non-standard conditions requires actual performance to be converted to equivalent standard performance at 200 F EWT and 60 F. The required unit size can easily be determined from standard heating capacity tables on pages 10 and 11. See formulas, page 9. Example 1 - Standard Coil -Application-Requirements: Heating load, 27,000 Btu/hr Entering air temperature, 60 F Entering water temperature, 210 F Water flow, 2 GPM Solution: From Table 8.1, page 8, the heating capacity conversion factor is 1.071. From formula 9.2, page 9: Standard Btu/hr = 27,000 Btu/hr = 25,200 Btu/hr 1.071 Table 10.1, page 10 shows selection of a unit size 4 with 25,800 Btu/hr is sufficient for application requirements. From formula 9.1, page 9: Actual Btu/hr = 25,800 Btu/hr x 1.071 = 27,600 Btu/hr From formula 9.4, page 9: Final Air Temperature = Example 2 - Standard Coil 27,600 Btu/hr + 60 F = 116 F 450 CFM x 1.085 -Application-Requirements: Heating load, 23,000 Btu/hr Entering air temperature, 60 F Entering water temperature, 220 F Water flow, 3 GPM maximum External static pressure,.05" W.C Solution: From Table 8.2, page 8, the conversion factor for 0.05" W.C., ESP, can be determined to be 0.90. From formula 9.2, page 9: Btu/hr required = 23,000 Btu/hr = 25,500 Btu/hr for.05" ESP. 0.90 From Table 8.1, page 8 the heating capacity conversion factor is 1.143. From formula 9.2, page 9: Standard Btu/hr = 25,500 Btu/hr = 22,300 Btu/hr 1.143 Table 10.1, page 10 shows a selection of a unit size 3 unit with 22,800 Btu/hr is sufficient for application requirements. Actual capacity is 22,800 Btu/hr x 0.90 x 1.14 = 23,400 Btu/hr Use formula 9.3, page 9 to calculate water temperature drop. Use formula 9.4, page 9 to determine final air temperature. Find CFM at 0.05" ESP from Table 8.2 on page 8. 7

CORRECTION FACTORS - HOT WATER Table 8.1 Heating Capacity Conversion Factors To determine the heating capacity (Btu/hr.) of a cabinet unit heater at any entering water temperature and entering air temperature, multiply the capacity at 200 F EWT and 60 F EAT (data on page 10-11) by the factor from this table. NOTE: GPM must be identical to that at 200 F EWT and 60 F EAT. Entering Water Entering Air Temperatures ( F) Temp. ( F) 0 10 20 30 40 50 60 70 80 90 100 100 0.769 0.683 0.599 0.518 0.439 0.361 0.286 0.212 0.140 0.069 0 110 0.846 0.759 0.674 0.592 0.512 0.434 0.357 0.283 0.210 0.138 0.068 120 0.923 0.835 0.749 0.666 0.585 0.506 0.429 0.353 0.279 0.207 0.137 130 1.000 0.911 0.824 0.740 0.658 0.578 0.500 0.424 0.349 0.276 0.205 140 1.077 0.987 0.899 0.814 0.731 0.651 0.571 0.494 0.419 0.345 0.273 150 1.154 1.063 0.974 0.888 0.805 0.723 0.643 0.565 0.489 0.414 0.342 160 1.231 1.139 1.049 0.962 0.878 0.795 0.714 0.636 0.559 0.483 0.410 170 1.308 1.215 1.124 1.036 0.950 0.867 0.786 0.706 0.629 0.552 0.478 180 1.385 1.291 1.199 1.110 1.024 0.940 0.857 0.777 0.699 0.621 0.547 190 1.462 1.367 1.274 1.184 1.097 1.012 0.929 0.848 0.768 0.690 0.615 200 1.539 1.443 1.349 1.258 1.170 1.084 1.000 0.918 0.838 0.759 0.684 210 1.615 1.519 1.424 1.332 1.243 1.157 1.071 0.989 0.908 0.828 0.752 220 1.692 1.594 1.499 1.406 1.312 1.229 1.143 1.060 0.978 0.897 0.820 230 1.769 1.670 1.573 1.480 1.390 1.301 1.214 1.130 1.048 0.966 0.889 240 1.846 1.746 1.649 1.554 1.463 1.373 1.286 1.201 1.118 1.035 0.957 250 1.923 1.822 1.723 1.628 1.536 1.446 1.357 1.272 1.188 1.104 1.025 Table 8.2 External Static Pressure Conversion Factors (standard coil) To determine the heating capacity (Btu/hr.) for applications with external static pressure, multiply the capacity at 200 F EWT and 60 F EAT (data on page 10-11) by the factor from this table. Unit 0.0" ESP 0.05" ESP 0.1" ESP 0.125" ESP Size BTU BTU BTU BTU CFM CFM CFM CFM Factor Factor Factor Factor 2 250 1.00 210.90 170.80 150.77 3 330 1.00 280.90 230.80 200.77 4 450 1.00 400.90 325.80 285.77 6 620 1.00 540.90 430.80 380.77 8 840 1.00 720.90 590.80 510.77 10 1050 1.00 905.90 735.80 640.77 12 1240 1.00 1065.90 870.80 755.77 14 1430 1.00 1230.90 1000.80 870.77 Table 8.3 CFM vs. Entering Air Temperature Conversion Factors To determine CFM at various entering air temperatures, multiply CFM from hot water performance tables by factor from this table. Entering Air Temperature ( F) 30 40 50 60 70 80 90 Conversion Factor 1.06 1.04 1.02 1.00 0.982 0.964 0.945 8

CORRECTION FACTORS - HOT WATER Table 9.1 Ethylene Glycol Correction Factors The following correction factors are for various percentages of ethylene glycol in water. Use the factors to correct the heating capacity of cabinet unit heaters when using an ethylene glycol solution. Follow the normal procedures in determining the heating capacity of a cabinet unit heater at any water temperature and entering air temperature, then apply the correction factor from the following table to determine the corrected heating capacity based on an ethylene glycol solution. Ethylene Glycol Solution % Solution Temperature ( F) 20% 30% 40% 50% 60% 70% 80% 100 0.99 0.96 0.93 0.89 0.85 0.81 0.76 150 0.99 0.96 0.94 0.90 0.87 0.83 0.78 200 0.99 0.96 0.94 0.92 0.88 0.85 0.81 250 0.98 0.96 0.94 0.92 0.89 0.86 0.82 Formulas: Hot Water 9.1) BTU A = BTU S x Factor (Table 8.1 or 8.2, page 8) 9.2) BTU S = BTU A Factor (Table 8.1 or 8.2, page 8) 9.3) D A = BTU A 500 x G A 9.4) F A = BTU A CFM A x 1.085 + E A Identification of Symbols BTU = Btu/hr performance D = Water temperature drop ( F) E = Entering air temperature ( F) F = Final air temperature ( F) G = Gallons per minute (GPM) Subscripts S = Standard operating condition (200 F EWT, 60 F EAT) A = Actual operating conditions 9

PERFORMANCE DATA - HOT WATER Table 10.1 Standard One Row Coil at Standard Conditions 200 F Entering Water/60 F Entering Air High Fan Speed Low Fan Speed Water Final Air Water Final Air Pressure Unit Temp. Temp. Temp. Temp. Drop Size Btu/hr. CFM Drop F F Btu/hr. CFM Drop F F GPM (Ft. of Water) 10,700 44.0 99 7,800 31.9 111.50.1 12,000 24.7 104 9,100 18.6 119 1.00.1 2 12,400 250 20.0 105 9,500 150 15.3 122 1.28.1 12,600 17.3 106 9,700 13.3 123 1.50.2 12,900 13.3 107 10,200 10.5 127 2.00.2 18,000 36.8 110 12,200 25.1 117 1.00.1 20,100 27.6 116 13,600 18.7 124 1.50.2 3 22,100 330 20.0 121 14,900 195 13.8 130 2.23.3 22,800 18.8 123 15,200 12.5 131 2.50.4 23,000 15.7 124 15,600 10.7 133 3.00.5 20,100 41.3 101 16,100 33.1 115 1.00.1 25,800 26.6 113 19,200 19.7 125 2.00.3 4 28,100 450 20.0 117 20,500 270 14.7 130 2.87.5 29,900 15.4 121 21,500 11.1 133 4.00.7 31,000 12.8 123 22,100 9.1 135 5.00.9 36,900 36.9 115 28,200 28.2 130 2.00.3 41,000 27.3 121 30,400 20.3 136 3.00.6 6 44,300 620 20.0 126 31,800 370 15.9 139 4.43.9 45,100 18.0 127 32,600 13.0 141 5.00 1.1 46,300 15.4 129 33,200 11.0 143 6.00 1.4 41,700 42.6 105 32,500 33.2 115 2.00.1 47,500 24.2 112 35,500 18.1 120 4.00.2 8 48,800 840 20.0 113 36,200 545 14.8 121 5.00.4 49,700 16.9 114 36,700 12.5 122 6.00.5 51,300 13.1 116 37,200 9.5 122 8.00.9 50,800 34.6 104 39,800 2.71 113 3.00.1 54,900 22.5 108 42,700 17.5 117 5.00.4 10 55,700 1050 20.0 108 43,300 685 15.5 118 5.70.5 57,100 16.7 110 44,500 13.0 119 7.00.7 58,200 13.2 111 45,300 10.3 121 9.00 1.1 68,100 34.8 110 51,400 26.3 118 4.00.2 71,000 24.2 112 53,700 18.3 121 6.00.6 12 72,300 1240 20.0 113 54,700 805 15.1 122 7.40.8 74,000 15.1 115 55,400 11.3 123 10.00 1.4 74,900 12.8 115 55,900 9.5 124 12.00 1.8 73,700 37.7 107 57,000 29.1 116 4.00.2 77,200 26.3 109 59,400 20.2 118 6.00.6 14 79,200 1430 20.0 111 61,200 930 15.5 120 8.10 1.0 80,500 16.5 111 62,000 12.7 121 10.00 1.4 81,300 13.9 112 62,400 10.6 121 12.00 1.8 10

PERFORMANCE DATA - HOT WATER Table 11.1 Optional High Capacity Two Row Coil at Standard Conditions 200 F Entering Water/60 F Entering Air High Fan Speed Low Fan Speed Water Final Air Water Final Air Pressure Unit Temp. Temp. Temp. Temp. Drop Size Btu/hr. CFM Drop F F Btu/hr. CFM Drop F F GPM (Ft. of Water) 20,100 41.3 134 13,500 27.8 148 1.00.7 21,800 29.9 140 14,200 19.5 153 1.50 1.1 2 22,700 250 23.4 144 14,500 140 15.0 155 2.00 1.7 23,200 20.0 146 14,700 12.7 156 2.40 2.8 23,800 16.4 148 14,900 10.3 158 3.00 4.3 31,400 32.1 149 21,200 21.7 160 2.00 1.4 32,400 26.5 151 21,900 17.9 163 2.50 2.1 3 33,000 325 22.5 154 22,300 195 15.2 165 3.00 2.8 33,400 20.0 155 22,600 13.4 167 3.60 3.7 33,800 17.3 156 22,900 11.7 168 4.00 4.6 41,900 42.9 148 28,700 29.4 158 2.00 1.5 43,200 35.4 151 29,600 24.3 161 2.50 2.3 4 44,100 440 30.1 152 30,200 270 20.6 163 3.00 3.0 45,200 23.1 155 31,000 15.9 166 4.00 5.0 45,800 20.0 156 31,400 12.7 168 4.70 8.8 49,800 49.8 135 35,900 35.9 149 2.00 1.4 54,300 36.2 141 38,100 25.4 155 3.00 2.8 6 56,800 615 28.4 145 39,300 370 19.6 158 4.00 4.8 58,500 23.4 148 40,100 16.0 160 5.00 7.2 59,700 20.0 150 40,600 13.5 161 6.00 10.1 67,000 27.4 134 50,900 20.8 147 5.00 1.0 71,400 20.9 138 53,900 15.7 152 7.00 1.7 8 71,900 835 20.0 139 54,400 540 15.0 153 7.40 1.9 74,900 15.3 143 56,500 11.6 157 10.00 3.2 76,500 13.0 144 57,600 9.8 158 12.00 4.3 79,800 27.2 131 62,200 21.2 144 6.00 1.4 83,600 21.4 134 65,000 16.6 148 8.00 2.2 10 84,600 1040 20.0 135 65,800 680 15.5 149 8.70 2.5 88,000 15.0 138 68,100 11.6 152 12.00 4.3 89,100 13.0 139 68,900 10.1 153 14.00 5.8 99,800 29.2 135 77,200 22.6 150 7.00 1.7 103,500 23.5 138 79,900 18.2 153 9.00 2.6 12 105,600 1220 20.0 140 81,500 790 15.4 155 10.80 3.6 107,600 16.9 141 82,900 13.0 157 13.00 5.0 109,100 14.9 142 83,900 11.4 158 15.00 6.5 114,200 25.9 135 87,800 20.0 148 9.00 2.6 117,100 21.8 137 89,900 16.7 151 11.00 3.7 14 118,300 1410 20.0 137 91,100 915 15.4 152 12.10 4.4 120,200 16.4 139 92,400 12.6 153 15.00 6.5 121,800 14.7 140 93,300 11.2 154 17.00 8.2 11

SAMPLE SIZING CALCULATIONS - STEAM General Selection Procedure Selection of a cabinet unit heater requires the following information: 1) room heat loss; 2) heat loss due to ventilation load if outside air is introduced; 3) steam pressure available; 4) entering air temperature; 5) required air circulation. Final selection of a cabinet unit heater is based on the following factors: Coil selection - One Row Coil only Unit size Model type Air flow arrangement Options and accessories Coil Selection Generally, unit size is determined by the coils capacity to offset the design heat loss. Capacities of the standard coils overlap, thereby making it possible to select the most economical coil for application requirements. Standard Coil (one row) - This coil will meet the vast majority of heating-application requirements. Maximum operating pressure: 15 psig steam. This coil is suitable for steam or hot water. Steam Selection Steam capacities for cabinet unit heaters are based on standard conditions of 2 psig steam and a 60 F entering air temperature (EAT). Conversion factors for other than standard conditions are listed in Table 13.1, page 13. Example 1 - Standard Coil -Application-Requirements: Heating load, 29,000 Btu/hr Entering air temperature, 60 F Entering steam pressure, 5 psig Solution: From Table 13.1 on page 13, conversion factor is 1.05. From formula 13.2, page 13: Standard Btu/hr = 29,000 Btu/hr = 27,600 Btu/hr 1.05 Table 14.1, page 14 shows selection of a unit size 3 with 28,300 Btu/hr is sufficient for application requirements. From formula 13.1, page 13: Actual Btu/hr = 28,300 Btu/hr x 1.05 = 29,400 Btu/hr From formula 13.3, page 13: Actual Condensate rate = = Actual Btu/hr Latent Heat or Steam 29,400 Btu/hr = 31 lbs/hr 961 From formula 13.4, page 13: Final Air Temperature = 29,400 Btu/hr + 60 F = 143 F 330 x 1.085 12

HEADER CORRECTION FACTORS - STEAM Table 13.1 Heating Capacity Conversion Factors To determine the heating capacity (Btu/hr.) of a cabinet unit heater at any steam pressure and entering air temperature, multiply the capacity (2 lbs. steam, 60 F EAT) on page 14 by the factor from this table. Latent Steam Steam Heat Temperature of Entering Air ( F) Press. Temp. of (psig) ( F) Steam -10 0 10 20 30 40 50 60 70 80 90 100 0 212 970 1.54 1.45 1.37 1.27 1.19 1.11 1.03 0.96 0.88 0.81 0.74 0.67 2 219 966 1.59 1.50 1.41 1.32 1.24 1.16 1.08 1.00 0.93 0.85 0.78 0.71 5 227 961 1.64 1.55 1.46 1.37 1.29 1.21 1.13 1.05 0.97 0.90 0.83 0.76 10 239 953 1.73 1.64 1.55 1.46 1.38 1.29 1.21 1.13 1.06 0.98 0.91 0.84 15 249 946 1.80 1.71 1.61 1.53 1.44 1.34 1.28 1.19 1.12 1.04 0.97 0.90 Table 13.2 External Static Pressure Conversion Factors (standard coil) To determine the heating capacity (Btu/hr.) for applications with external static pressure, multiply the capacity (2 lbs. steam and 60 F EAT) on page 14 by the factor from this table. The following conversion factors may be used with standard steam data Table 14.1, page 14. 0.0" ESP 0.05" ESP 0.1" ESP 0.125" ESP Unit BTU BTU BTU BTU Size CFM Factor CFM Factor CFM Factor CFM Factor 2 250 1.00 210.90 170.80 150.77 3 330 1.00 280.90 230.80 200.77 4 450 1.00 400.90 325.80 285.77 6 620 1.00 540.90 430.80 380.77 8 840 1.00 720.90 590.80 510.77 10 1050 1.00 905.90 735.80 640.77 12 1240 1.00 1065.90 870.80 755.77 14 1430 1.00 1230.90 1000.80 870.77 Table 13.3 CFM Versus Entering Air Temperature Conversion Factors To determine CFM at various entering air temperature multiply the CFM from steam performance tables by factor from this table. Entering Air Temperature ( F) 30 40 50 60 70 80 90 Conversion Factor 1.06 1.04 1.02 1.00 0.982 0.964 0.945 Formulas: Steam 13.1) BTU A = BTU S x Factor (Table 13.1 or 13.2) 13.2) BTU S = BTU A Factor (Table 13.1 or 13.2) 13.3) C A = BTU A Latent Heat of Steam 13.4) F A = BTU A CFM A x 1.085 + E A Identification of Symbols BTU = Btu/hr performance C = Condensate (LBS/hr.) E = Entering air temperature ( F) F = Final air temperature ( F) Subscripts S = Standard operating condition (2 lbs. steam, 60 F EAT) A = Actual operating conditions 13

HEADER PERFORMANCE DATA - STEAM Table 14.1 Standard One Row Coil at Standard Conditions 2 lbs. Steam/60 F Entering Air Fan Unit Speed Final Air Condensate Size Btu/hr. CFM (RPM) EDR Temp. F Lbs./Hr. 2 3 4 6 8 10 12 14 19,800 250 1050 82 133 21 14,600 150 625 61 156 15 28,300 330 1050 118 139 29 18,000 195 625 75 145 19 42,500 450 1050 177 147 44 29,300 270 625 122 160 30 52,100 620 1050 217 137 54 42,700 370 625 178 166 44 67,700 840 1050 282 134 70 52,900 545 625 220 149 55 76,000 1050 1050 317 126 79 60,600 685 625 253 141 63 95,400 1240 1050 398 130 99 75,100 805 625 313 146 78 102,600 1430 1050 428 126 106 81,700 930 625 340 141 85 14

HEADER CORRECTION FACTORS Mounting Height Height at which cabinet unit heaters are installed is critical. Maximum mounting heights for all units are listed in the tables below. The data in tables are based on operating conditions of 2 lbs. steam or 220 F entering water with 60 F entering air. When operating conditions are other than those above, refer to chart for mounting height correction factor. To obtain the maximum mounting height at actual operating conditions, multiply the appropriate factor from chart by the mounting height in Tables. The mounting heights must be followed closely to assure maximum comfort. Table / Figure 15.1 Maximum Mounting Height 1 Size H T (Ft.) (Ft.) 2 8 15 3 8 18 4 9 22 6 9 23 8 10 26 10 10 27 12 11 26 14 11 27 1 Maximum mounting height and corresponding heat throw of heaters operating at standard conditions (2 lbs. steam or 220 F entering water, 60 entering air). Standard Air Flow Ceiling-Mounted H Inverted Air Flow Wall-Mounted H T T Strong opposing drafts, large obstructions in the air stream of the unit, and higher than normal discharge air temperatures (resulting from high steam pressures) can prevent the heated air discharged by the cabinet unit from reaching the floor. Under unfavorable conditions such as these, allowances must be made to assure maintenance of desired comfort. Table / Figure 15.2 Maximum Mounting Height 1 Size H T (Ft.) (Ft.) 2 7 8 3 8 10 4 8 11 6 8 12 8 10 16 10 10 18 12 11 20 14 11 21 1 Maximum mounting height and corresponding heat throw of heaters operating at standard conditions (2 lbs. steam or 220 F entering water, 60 entering air). Standard Air Flow Ceiling-Mounted H T Inverted Air Flow Wall-Mounted T H Table 15.3 Maximum Mounting Heights Correction Factors These correction factors are to be used as multipliers to correct the maximum recommended mounting heights H or heat throw T of cabinet unit heaters when operated with steam pressures other than 2 pounds or with water at other than entering temperature of 220 F. CORRECTION FACTOR R 1.3 Steam Pressure 1.2 2 5 10 15 1.1 1.0.9.8.7.6.5 150 160 170 180 190 200 210 220 230 240 250 AVERAGE WATER TEMP. ( F) 15

HEADER MODEL C DIMENSIONAL / MOTOR DATA Floor Mounted Figure 16.1 Floor Model C, Sizes 2-14 Steam/Hot Water Cabinet Unit Heaters COIL CONNECTIONS SIZES 2-6: 3 /4" NPT FOR STANDARD COIL 5 /8" I.D. SWEAT FOR TWO ROW COIL 4 3 /4" ACCESS DOOR 5 1 /2" F ACCESS DOOR C SIZES 8-14: N 1" NPT, ONE OR TWO ROW COIL L J (size 8-14 only) G 7 /16" MOUNTING HOLES SIZES 8-14 ONLY SPEED CONTROL AND J-BOX 1 /2" 3" Optional Outlet K B 2 3 /4" 4 1 /2" SPEED CONTROL AND J-BOX 11" M E AIR INLET 4 1 /2" FILTER SIZES 2-6 4 5 /8" X 3 /8" SLOTTED MOUNTING HOLES IN REAR FLANGE D A NOTE: Left hand piping is standard, right hand piping available when specified. Bottoms of end compartments are open for piping and electrical access. H Table 16.1 Cabinet Dimensions (inches) Unit Size A B C D E F G H J Approx. Shipping Weight lbs. 2 38-3/4 25 9-3/4 8 5 5-1/8 15-5/8 19-5/8 80 3 43-3/4 25 9-3/4 8 5 5-1/8 19-5/8 23-5/8 90 4 48-3/4 25 9-3/4 8 5 5-1/8 27-5/8 27-5/8 110 6 61-3/4 25 9-3/4 8 5 5-1/8 39-5/8 39-5/8 120 8 71-3/4 28 12 10 7 5-1/8 47-5/8 30-5/8 9-3/4 160 10 71-3/4 28 12 10 7 5-7/8 47-5/8 39-5/8 9-3/4 165 12 83-3/4 28 12 10 7 5-1/8 59-5/8 51-5/8 9-3/4 185 14 83-3/4 28 12 10 7 5-7/8 59-5/8 51-5/8 9-3/4 190 Table 16.2 Filter Dimensions (inches) ➀ Unit Size 2... 8-1/2 x 20-3/4 x 1/2 3... 8-1/2 x 25-3/4 x 1/2 4... 8-1/2 x 30-3/4 x 1/2 6... 8-1/2 x 43-3/4 x 1/2 8 & 10... 10-3/4 x 49-3/4 x 1/2 12 & 14... 10-3/4 x 61-3/4 x 1/2 ➀ Filters are permanent/cleanable. Table 16.3 Coil Connection Dimensions (inches) Unit K L M N Size 2 thru 6 22-1/2 7-3/8 15-1/4 2-3/8 8 thru 14 25-5/8 9-1/4 18 1-5/8 16 Table 16.4 Motor Ratings (115 volts/60hz/1ø) Standard PSC Motor High Static Unit Motor Motor Option 140 Motor option 141 size qty. HP Total Amps HP Total Amps HP Total Amps 2 + 3 1 1/30 1.7 1/30 0.70 0.4 4.60 4 + 6 1 1/20 2.37 1/20 1.05 0.4 4.60 8 + 10 1 1/30 1/30 0.8 4.07 1.75 9.20 1 1/20 1/20 0.8 12 + 14 2 1/20 4.74 1/20 2.10 0.8 9.20

MODEL CW DIMENSIONAL / MOTOR DATA Exposed or Recessed Wall / Ceiling Mounted Figure 17.1 Wall or Ceiling, Sizes 2-14 Steam/Hot Water Cabinet Unit Heaters COIL CONNECTIONS SIZES 2-6: 3 /4" NPT FOR STANDARD COIL 5 /8" I.D. SWEAT FOR TWO ROW COIL SIZES 8-14: 1" NPT, ONE OR TWO ROW COIL G F C N L Standard Outlet J (size 8-14 only) 7 /16" MOUNTING HOLES MODEL SIZES 8-14 ONLY 1 /2" 3" K Optional Outlet B 4 1 /4" SPEED CONTROL AND J-BOX 11" 9 3 /4" M Standard Inlet Optional Inlet Table 17.1 Cabinet Dimensions (inches) Approx. A B C F G J Shipping Unit Weight Size lbs. 2 38-3/4 25 9-3/4 5-1/8 15-5/8 90 2 3 /4" 3 43-3/4 25 9-3/4 5-1/8 19-5/8 100 4 48-3/4 25 9-3/4 5-1/8 27-5/8 120 6 61-3/4 25 9-3/4 5-1/8 39-5/8 130 8 71-3/4 28 12 5-1/8 47-5/8 9-3/4 170 10 71-3/4 28 12 5-7/8 47-5/8 9-3/4 175 12 83-3/4 28 12 5-1/8 59-5/8 9-3/4 195 14 83-3/4 28 12 5-7/8 59-5/8 9-3/4 200 4 1 /4" NOTE: Left hand piping is standard, right hand piping available when specified. Bottoms of end compartments are open for piping and electrical access. Table 17.2 Filter Dimensions (inches) ➀ Unit Size 2... 8-1/2 x 20-3/4 x 1/2 3... 8-1/2 x 25-3/4 x 1/2 4... 8-1/2 x 30-3/4 x 1/2 6... 8-1/2 x 43-3/4 x 1/2 8 & 10... 10-3/4 x 49-3/4 x 1/2 12 & 14... 10-3/4 x 61-3/4 x 1/2 ➀ Filters are permanent/cleanable. A SIZES 2-6 4 5 /8" X 3 /8" SLOTTED MOUNTING HOLES IN REAR FLANGE Table 17.3 Coil Connection Dimensions (inches) Unit K L M N Size 2 thru 6 22-1/2 7-3/8 15-1/4 2-3/8 8 thru 14 25-5/8 9-1/4 18 1-5/8 Table 17.4 Motor Ratings (115 volts/60hz/1ø) Standard PSC Motor High Static Unit Motor Motor Option 140 Motor option 141 size qty. HP Total Amps HP Total Amps HP Total Amps 2 + 3 1 1/30 1.7 1/30 0.70 0.4 4.60 4 + 6 1 1/20 2.37 1/20 1.05 0.4 4.60 8 + 10 1 1/30 1/30 0.8 4.07 1.75 9.20 1 1/20 1/20 0.8 12 + 14 2 1/20 4.74 1/20 2.10 0.8 9.20 17

DUCT COLLAR DIMENSIONAL DATA Figure 18.1 - Duct Collars C A C D 3/4" 3/4" B E Table 18.1 ➀ ➁ Options 122 and 123-100% Air Inlet or Outlet Duct Collars Unit Size A B C D E 2 18-1/4 4-1/4 10-3/8 2-1/2 3 3 23-1/4 4-1/4 10-3/8 2-1/2 3 4 28-1/4 4-1/4 10-3/8 2-1/2 3 6 41-1/4 4-1/4 10-3/8 2-1/2 3 8 44-1/4 4-1/4 10-7/8 2-1/2 5-1/4 10 44-1/4 5-1/4 10-7/8 2-1/2 4-1/4 12 58-1/4 4-1/4 12-7/8 2-1/2 5-1/4 14 58-1/4 5-1/4 12-7/8 2-1/2 4-1/4 C A C B E Figure 18.2 Model C - Outside Air Duct Collar Table 18.2 ➀ ➁ Options 124, 125, 134, 135 and 137 - Model C 25% and 100% Fresh Air Duct Collar Outside Air Percentage 25% 100% Options 124, 134 and 137 Options 125 and 135 Unit Size A B C A B C 2 12 1/4 3 1/2 13 1/4 18 1/2 4 1/4 10 1/8 3 12 1/4 3 1/2 15 3/4 23 1/2 4 1/4 10 1/8 4 12 1/4 3 1/2 18 1/4 28 1/2 4 1/4 10 1/8 6 12 1/4 3 1/2 24 3/4 41 1/2 4 1/4 10 1/8 8 24 1/4 3 1/2 23 3/4 44 1/2 4 1/4 13 5/8 B 3/4" 10 24 1/4 3 1/2 23 3/4 44 1/2 5 1/4 13 5/8 12 24 1/4 3 1/2 29 3/4 58 1/2 4 1/4 12 5/8 14 24 1/4 3 1/2 29 3/4 58 1/2 5 1/4 12 5/8 C A C ➀ All dimensions are in inches. ➁ Includes 3/4" top and bottom duct flanges for duct connection. 18

UNIT / MECHANICAL SPECIFICATIONS Table 19.1 Unit Data Specifications Unit Size 2 3 4 6 8 10 12 14 Coil Standard 1 Row Face Area, Ft. 2 1.0 1.3 1.6 2.3 3.4 3.4 4.6 4.6 High Capacity 2 Row Face Area, Ft. 2 1.1 1.5 1.8 2.7 3.6 3.6 4.8 4.8 Standard Coil Connections........... 3/4" NPT 3/4" NPT 3/4" NPT 3/4" NPT 1" NPT 1" NPT 1" NPT 1" NPT High Capacity Coil Connections....... 5/8" ID 5/8" ID 5/8" ID 5/8" ID 1" NPT 1" NPT 1" NPT 1" NPT Sweat Sweat Sweat Sweat Blowers (Direct Drive) No./Dia. x Width (Inches)............. 1 / 5-1/4 x 7 1 / 5-3/4 x 7 2 / 5-1/4 x 7 2 / 5-3/4 x 7 3 / 5-3/4 x 7 3 / 5-3/4 x 7 4 / 5-3/4 x 7 4 / 5-3/4 x 7 High Speed (Rpm).................. 1050 1050 1050 1050 1050 1050 1050 1050 Low Speed (Rpm) 1................ 625 625 625 625 625 625 625 625 High CFM......................... 250 330 450 620 840 1050 1240 1430 Low CFM 1....................... 150 195 270 370 545 685 805 930 2 Motor HP......................... 1/30 1/30 1/20 1/20 1/30 1/20 1/30 1/20 1/20 1/20 Volts/Phase/Hertz................... 115/1/60 115/1/60 115/1/60 115/1/60 115/1/60 115/1/60 115/1/60 115/1/60 Amps, Standard Shaded Pole Motors... 1.7 1.7 2.37 2.37 4.07 4.07 4.74 4.74 Amps, Option #140 PSC Motor.........7.7 1.05 1.05 1.75 1.75 2.10 2.10 Amps, Option #141 High Static Motor... 4.6 4.6 4.6 4.6 9.2 9.2 9.2 9.2 Shipping Weight Lbs. Model C.......................... 80 90 110 120 160 165 185 190........................ 90 100 120 130 170 175 195 200 1 2 Standard solid state speed control offers infinate speed control between high and low speed/cfm. Sizes 2-6 have one motor. Sizes 8-14 have two motors. Unit Mechanical Specifications Cabinet Floor models shall be provided with stamped louvers and a one inch high dust barrier at the bottom. The cabinet shall be 18-gauge steel with 16 gauge front panels. All painted surfaces shall be treated for corrosion resistance prior to being finished with a tan, baked on enamel finish, which may be used as a final coat or repainted. All unpainted steel shall be galvanized. (When specified) color as selected by architect shall be provided in one of 9 optional colors as shown on manufacturer s color chart 11-405. Wall or ceiling models shall have cabinets with stamped louvers. The entire bottom of the unit must be enclosed. Access to the speed control shall be through the easy access 16-gauge front panels. (Available, when specified, as optional equipment) an access door shall be provided for speed control access. All models shall have two 9" minimum wide piping end pockets. All wall and ceiling units shall have safety hinged access panels that can be easily removed during installation. Coils The heating coils shall provide specified capacities and not exceed the pressure drop and GPM listed in this catalog. Coils shall be suitable for 200 PSI working pressure with 250 F water. Motor Speed Control The unit shall have a unit-mounted solid state motor speed control, with high through low speeds and off positions on all models. Dampers (optional equipment) When specified, the unit shall be equipped with a 25% galvanized steel fresh air blade damper. Model C, floor units only. When dampers are specified, indicate one of the following: 1. These dampers shall be controlled from the end pocket with a manual control assembly that indicates the open and closed positions. 2. The damper shall be controlled by an electric, spring-return type motor, which will be energized when the blower motor is turned on thus moving the damper to the 25% or 100% position. It will be de-energized and close the damper when the blower motor is off. Motors, Blowers and Drives Blowers shall be of the centrifugal, forward curved type, to provide even air distribution and low sound level. All units shall have shaded pole (permanent split capacitor available when specified as optional equipment) direct-drive motors. The motor and blower assembly shall be capable of being easily removed from the unit. Motors are built for continuous duty to NEMA standards. Grilles (optional equipment) When specified, aluminum linear bar inlet and/or outlet grilles shall be provided. When specified, outlet grilles may have two-way deflection louvers. Filters All air, both fresh and return, shall be filtered by a cleanable expanded aluminum filter. 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 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 solutions for commercial, institutional and industrial applications. Whatever your heating, ventilating and cooling requirements, Modine has the product to satisfy your needs, including: Gas-fired unit heaters Gas-fired duct furnaces Gas-fired high-intensity infrared heaters Gas-fired low-intensity infrared heaters Steam/hot water unit heaters Steam/hot water cabinet unit heaters Steam/hot water commercial fin tube radiation Oil-fired unit heaters Electric unit heaters Indoor gravity vented single and multiple duct furnace make-up air units Indoor separated combustion single and multiple duct furnace make-up air units Outdoor single and multiple duct furnace make-up air units Direct-fired make-up air units With burner capacities up to 7,862,000 Btu/hr and air-handling capacities as high as 60,000 CFM, Modine products are compatible with every fuel type, including: Natural or Propane Gas Steam/Hot Water Oil Electric Specific catalogs and computer-generated heat-loss calculations are available for each product. Catalogs 75-136 and 75-137 provide details on all Modine HVAC equipment. Distributed By: Commercial HVAC&R Division Modine Manufacturing Company 1500 DeKoven Avenue Racine, Wisconsin 53403-2552 Phone: 1.800.828.4328 (HEAT) Fax: 262.636.1665 www.modine.com Modine Manufacturing Company 2004 C2/05-4M Litho in USA