HIM-16 INSTALLATION INSTRUCTIONS & PARTS LIST HORIZONTAL STEAM AND HOT WATER UNIT HEATERS ATTENTION: READ THIS MANUAL AND ALL LABELS ATTACHED TO THE UNIT CAREFULLY BEFORE ATTEMPTING TO INSTALL, OPERATE OR SERVICE THESE UNITS! CHECK UNIT DATA PLATE FOR TYPE OF GAS AND ELECTRICAL SPECIFICATIONS AND MAKE CERTAIN THAT THESE AGREE WITH THOSE AT POINT OF INSTALLATION. RECORD THE UNIT MODEL AND SERIAL No.(s) IN THE SPACE PROVIDED. RETAIN FOR FUTURE REFERENCE. Model No. Serial No.
TABLE OF CONTENTS GENERAL SAFETY INFORMATION .......................... 3 SPECIFICATIONS Dimensional Data .................................................. 4 Steam Performance Data ....................................... 5 Steam Calculations & Correction Factors ............... 6 Hot Water Performance Data ................................. 7 Hot Water Calculations & Correction Factors ........ 8 Technical Data ....................................................... 9 Motor Data ............................
GENERAL SAFETY INFORMATION Do not insert fingers or foreign objects into the heater or its air moving device. Do not block or tamper with the heater in any manner while in operation or just after it has been turned off, as some parts may be hot enough to cause injury. Failure to comply with the general safety information may result in extensive property damage, severe personal injury or death.
DIMENSIONAL DATA Figure 3 – Serpentine Type Models 108A, 118A, 125A, 136A Figure 4 – Header Type Models 18 thru 360 NOTE: Motors are totally enclosed, thermally protected, sleeve bearing, with 2"(h) x 4"(w) conduit connection boxes. 3/8-16 nutserts are attached to enclosure for balanced hanging.
STEAM PERFORMANCE DATA Table 3 - Header Type Models only Unit Size 18 24 36 48 60 72 84 96 108 120 132 144 156 180 204 240 280 300 360 Output BTU/ HR* (kW) Cond. lbs./hr. (kg/hr) E.D.R. Sq. Ft. (sq. m) 18,000 (5.3) 16,200 (4.7) 24,000 (7.0) 21,600 (6.3) 36,000 (10.5) 32,400 (9.5) 48,000 (14.1) 43,200 (12.7) 60,000 (17.6) 54,000 (15.8) 72,000 (21.1) 64,800 (19.0) 84,000 (24.6) 75,600 (22.2) 96,000 (28.1) 86,400 (25.3) 108,000 (31.6) 97,200 (28.5) 120,000 (35.2) 132,000 (38.7) 144,000 (42.
STEAM CALCULATIONS AND CORRECTION FACTORS EXAMPLE: – UNIT SIZE: _________ 24 Steam Pressure ___10 PSI Entering Air Temp. __ 40°F I. CAPACITY A. For 2 lbs. steam, 60° entering air Read output directly from Table 3, 24,000 BTU/HR. (Ref., Std. 24). B. For higher steam pressures and/or E.A.T.’s above or below 60°F Multiply output from Table 3 by appropriate correction factor from Table 4 (below). II. FINAL AIR TEMPERATURE A. For 2 lbs. steam, 60° entering air 24,000 x 1.29 = 30,960 BTU/HR.
HOT WATER PERFORMANCE DATA Table 6 - Serpentine and Header Type Models Unit Size 108A 118A 125A 136A 18 24 36 48 60 72 84 96 108 120 132 144 156 180 204 240 280 300 360 Output BTU/ HR* (kW) 8,030 (2.4) 6,800 (2.0) 18,400 (5.4) 15,650 (4.6) 24,800 (7.3) 21,230 (6.2) 35,900 (10.5) 32,300 (9.5) 13,050 (3.8) 11,725 (3.4) 17,400 (5.1) 15,600 (4.6) 26,100 (7.6) 23,500 (6.9) 34,800 (10.2) 31,300 (9.2) 43,600 (12.8) 39,200 (11.5) 52,300 (15.3) 47,000 (13.8) 61,000 (17.9) 54,900 (16.1) 69,700 (20.
HOT WATER CALCULATIONS AND CORRECTION FACTORS EXAMPLE: – UNIT SIZE: _______________________ 24 Entering Water Temp. ____________ 160°F Entering Air Temp. _______________ 40°F Water Temperature Drop __________ 10°F I. CAPACITY @ 20° TD: A. For 200° EWT, 60° EAT Read output directly from Table 6, 17,400 BTU/HR (Ref., Std. 24). B. For EWT and/or EAT above or below Standard Multiply output from Table 6 by factor from Table 7 (below). 17,400 x .878 = 15,277 BTU/HR. II. CAPACITY AT OTHER TD’s A.
TECHNICAL DATA The performance data listed in Table 6 includes sound ratings. The ratings provide a guide in determining the acceptable degree of loudness in particular occupancy situations. Certain general rules apply to specific selection of unit heaters with regard to degree of quietness (or loudness); • The greater the fan diameter, the higher the sound level. • The higher the motor RPM, the higher the sound level.
MOTOR DATA NOTE 1: All motors are constant speed and operate at top speed as indicated in motor data. Models 18 through 108, including 108A, 118A, 125A and 136A can be run at reduced speed with addition of optional variable speed switch. This switch is factory-calibrated for low and high speed ratings, with intermediate speeds infinitely controllable. Models 120 through 360 operate at constant speed as indicated in motor data. All 1/4 H.P. motors are P.S.C. NOTE 2: Motors under 1/3 H.P.
LOCATION It is assumed that the design engineer has selected, sized, and located in the area to be heated. However, the information given here may be of additional help to the installer. These sketches indicate suggested basic locations for different types of unit heaters. Figure 6 MOUNTING HEIGHT AND APPROX. HEAT THROW Based on 2 PSI (13.
INSTALLATION UNIT MOUNTING Install unit heaters to meet Occupational Safety and Health Act (OSHA) and ETL requirements. Unit heaters mounted lower than 8 feet (2.4m) from the floor must be equipped with an OSHA fan guard. NOTICE: Units equipped with the motor mounted to the fan guard require two point suspension. Units equipped with a shelf mounted motor are required to be suspended at four points. Refer to Figures 3 and 4 for two point suspension and refer to Figure 6A for four point suspension.
Figure 6A Four Point Suspension Shelf Mounted Motors Only A UNIT SIZE 1-3/4 C 1" A B 48/60 15-5/16 1-7/8 2-1/2 72 16-9/16 84 & 120 19-1/16 3" 96/108 17-13/16 2-1/2 132/144/156 21-9/16 3-1/2 180/204 22-13/16 4" 240/280 26-1/16 4-1/2 300/360 31-9/16 6" C 11-11/16 10" C B B 1-3/4 CL 4 PT.
T GA Figure 9 High Pressure Steam "HIGH PRESSURE STEAM" SU PP PI T GA TC EV AL TU VE TC OC K UP D-6058 P RA ) T T ASS E P CK BY BU H AIR IT (W UP RN PE H H AL LY RE PI TC EV ER IN RA ST 14 VE
"LOW Figure 10PRESSURE STEAM GRAVITY" Low Pressure Steam Gravity SU PP AIR G AT LV PI TC H UP LY RE A EV GA PI E CH E TC CK H TU VE RN NT N MI .S IZE 3/4 D-6059 UP VA 10 E LV 15 "M IN .
T GA Figure 11 Low Pressure Vapor Or Vacuum "LOW PRESSURE VAPOR OR VACUUM" SU PI PP G TC H H UP LY RE PI TC E AT VA TU LV RN E UP D-6060 ER P RA F T &T AIN R ST 16 EV AL VE
ELECTRICAL CONNECTIONS On steam systems a low limit may be used to prevent fan from blowing cold air unless the heater has steam passing through the coil. HAZARDOUS VOLTAGE! DISCONNECT ALL ELECTRIC POWER INCLUDING REMOTE DISCONNECTS BEFORE SERVICING. Failure to disconnect power before servicing can cause severe personal injury or death. Small hot water systems could have the circulating pump controlled directly by the room thermostat.
WIRING INSTALLATION Figure 12 Figure 13 Figure 14 1 PHASE LINE 1 PHASE LINE 1 PHASE LINE MANUAL STARTING SWITCH MANUAL STARTING SWITCH MANUAL STARTING SWITCH MOTOR MOTOR MOTOR LIMIT CONTROLLER REVERSE ACTING ROOM THERMOSTAT MANUAL CONTROL WITH SINGLE PHASE MOTOR Figure 15 THERMOSTATIC CONTROL WITH MANUAL STARTER Figure 16 THERMOSTATIC CONTROL WITH REVERSE ACTING CONTROLLER AND MANUAL STARTER Figure 17 1 PHASE LINE 1 PHASE LINE 1 PHASE LINE ROOM THERMOSTAT MAGNETIC STARTING SWITCH MANUAL
OPTIONS VARIABLE SPEED CONTROL 115 Volt Only (optional) The solid state speed controller may be installed at any convenient location and is suitable for surface or flush type mounting. A Standard electrical single or double gang wall box is recommended as in Figure 23. HORIZONTAL AND VERTICAL LOUVERS Horizontal louvers are standard on all models. Vertical louvers are an optional accessory on all models. Vertical louvers are installed on built to order units or shipped loose for field installation.
MAINTENANCE PERIODIC SERVICE Open all disconnect switches and secure in that position before servicing unit. Failure to do so may result in personal injury or death from electrical shock. Because of the simple design of the steam and hot water unit heaters, they are nearly maintenance free. However, depending on the environment, simple maintenance practices should be adopted. Periodically check the finned surfaces and vacuum these as often as necessar y to remove any accumulation of lint and dirt.
REPLACEMENT PARTS When ordering replacement parts Model, Model Type (IE: Standard or Exp.
Table 14 - Troubleshooting Guide SYMPTOMS POSSIBLE CAUSE(S) Frozen coil. Defective coil. Corrosion. Leak in joint. CORRECTIVE ACTION A. Leaking coil. 1. 2. 3. 4. B. Poor output on steam. 1. Check for air in coil. 2. Lint on coil fins. 1. Repair or replace thermostatic air vent. 2. Clean coil and fins. C. Poor output on steam or hot water. 1. No circulation of water through coil. 1. Check circulation pump. Check for blocked tubes. 2. Check voltage and correct. Check for linted coil and clean.
HOW TO ORDER REPLACEMENT PARTS Please send the following information to your local representative; If further assistance is needed, contact the manufacturer’s customer service department. • Model number • Serial Number (if any) • Part description and Number as shown in the Replacement Parts Catalog.
EQUIPMENT START-UP Customer ____________________________________ Job Name & Number _________________________ PRE-INSPECTION INFORMATION With power and water/steam off.