User Guide
1-558.0
SPECIAL PRECAUTIONS
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS 
IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE 
SAFE, EFFICIENT AND TROUBLE-FREE OPERATION. 
INADDITION, PARTICULAR CARE MUST BE EXERCISED 
REGARDING THE SPECIAL PRECAUTIONS LISTED 
BELOW. FAILURE TO PROPERLY ADDRESS THESE 
CRITICAL AREAS COULD RESULT IN PROPERTY 
DAMAGE OR LOSS, PERSONAL INJURY, OR DEATH. 
THESE INSTRUCTIONS ARE SUBJECT TO ANY MORE 
RESTRICTIVE LOCAL OR NATIONAL CODES.
HAZARD INTENSITY LEVELS
1.  DANGER: Indicates an imminently hazardous situation 
which, if not avoided, WILL result in death or serious injury.
2.  WARNING: Indicates a potentially hazardous situation 
which, if not avoided, COULD result in death or serious 
injury.
3.  CAUTION: Indicates a potentially hazardous situation which, 
if not avoided, MAY result in minor or moderate injury.
4.  IMPORTANT: Indicates a situation which, if not avoided, 
MAY result in a potential safety concern.
2
SPECIAL PRECAUTIONS / TABLE OF CONTENTS / SI (METRIC) CONVERSION 
FACTORS
IMPORTANT
1.  Start-up and adjustment procedures must be performed 
by a qualified service agency.
2.  To check most of the Possible Remedies in the 
troubleshooting guide listed in Table 11.1, refer to the 
applicable sections of the manual.
Table of Contents 
General Information .............................................................. 1
Special Precautions .............................................................. 2
SI (Metric) Conversion Factors ............................................. 2
Unit Location......................................................................... 3
Unit Mounting ....................................................................3-4
Performance Data .............................................................5-6 
Dimensional Data ................................................................. 6 
Unit Suspension ................................................................... 7
Installation ............................................................................ 8
 Piping ................................................................................ 8
 Electrical Connections ...................................................... 8
Operation .............................................................................. 8
    Prior to Operation.............................................................. 8
 Initial Start-up .................................................................... 8
    Automatic Control Operations ........................................... 8
 General ............................................................................. 9
Service................................................................................ 10
Service / Troubleshooting ................................................... 11
Warranty ................................................................Back Page
SI (METRIC) CONVERSION FACTORS 
Table 2.1
 DANGER
Appliances with power codes 01, 02, 04, 05, and 10 must 
not be installed where they may be exposed to a potentially 
explosive or flammable atmosphere.
 WARNING
1. Disconnect power supply before making wiring connections 
to prevent electrical shock and equipment damage.
2. All appliances must be wired strictly in accordance with 
wiring diagram furnished with the appliance. Any wiring 
different from the wiring diagram could result in a hazard to 
persons and property.
3. Any original factory wiring that requires replacement must 
be replaced with wiring material having a temperature 
rating of at least 105°C.
4. When servicing or repairing this equipment, use only 
factory-approved service replacement parts. A complete 
replacement parts list may be obtained by contacting 
Modine Manufacturing Company. Refer to the rating plate 
on the appliance for complete appliance model number, 
serial number, and company address. Any substitution of 
parts or controls not approved by Modine will be at the 
owner’s risk.
 CAUTION
1. Do not install units below 8 feet measured from the bottom 
of the unit to the floor. 
2. A qualified installation and service agency must perform all 
installation and service of these appliances, and the use 
of this manual is solely and specifically intended for that 
purpose.
3. Do not reuse any electrical component which has been 
wet. Replace component.
4. Ensure that the supply voltage is within +10% and -5% from 
rated voltage listed on the nameplate.
5. Heaters are designed for use in heating applications with 
ambient temperatures between 0°F and 100°F in hot water 
applications.
  To Convert  Multiply By  To Obtain
  "W.C.  0.249  kPa 
  °F  (°F-32) x 5/9  °C 
 Btu  1.06  kJ
 Btu/ft
3
  37.3  kJ/m
3
  Btu/hr  0.000293  kW
  CFH (ft
3
/hr) 0.000472  m
3
/min 
  CFH (ft
3
/hr) 0.00000787  m
3
/s
 CFM (ft
3
/min) 0.0283  m
3
/min 
 CFM (ft
3
/min) 0.000472  m
3
/s
 To Convert  Multiply By  To Obtain
  feet  0.305  m
  Gal/Hr.  0.00379   m
3
/hr 
 Gal/Hr.  3.79  l/hr
  gallons  3.79  l
 Horsepower  746  W
  inches  25.4  mm 
  pound  0.454  kg 
  psig  6.89  kPa 
  psig  27.7  "W.C.










