Use and Care Manual

THIS MANUAL IS THE PROPERTY OF THE OWNER.
PLEASE BE SURE TO LEAVE IT WITH THE OWNER WHEN YOU LEAVE THE JOB.
Inspection on Arrival
1. Inspect unit upon arrival. In case of damage, report it
immediately to the transportation company and your local
Modine sales representative.
2. Check rating plate on unit to verify that power supply meets
available electric power at the point of installation.
3. Inspect unit upon arrival for conformance with description of
product ordered (including specifications where applicable).
Table of Contents
Inspection on Arrival ................................. 1
Special Precautions ................................. 2
SI (Metric) Conversion Factors......................... 3
Before You Begin ................................... 3
Unit Location....................................... 4
Combustible Material and Service Clearances ......... 4
Unit Mounting .................................. 5
Unit Installation ................................. 5
Venting ....................................... 6
Gas Connections............................... 12
High-Altitude Accessory Kit ....................... 13
Electrical ..................................... 15
Wiring/Blower Speed Adjustment .................. 16
Operation ........................................ 17
Unit Components .................................. 18
Dimensions....................................... 19
Service/Troubleshooting............................. 20
Unit Wiring Diagram ................................ 21
Model/Serial Number/Replacement Parts ............... 22
Commercial Warranty........................Back Cover
INSTALLATION AND SERVICE MANUAL
gas-fired unit heaters
model HD and HDB
6-583.12
5H0800040000
All models approved for use in California by the CEC and
in Massachusetts. Unit heater is certified for residential and
commercial applications. These unit heaters are certifed as Utility
heaters and are intended for the heating of non-living spaces that
are attached to, adjacent to, or part of a structure that contains
space for family living quarters. They are not intended to be the
primary source of heat in residential applications.
WARNING
1. Improper installation, adjustment, alteration,
service, or maintenance can cause property
damage, injury, or death, and could cause exposure
to substances which have been determined by
various state agencies to cause cancer, birth
defects, or other reproductive harm. Read the
installation, operating, and maintenance instructions
thoroughly before installing or servicing this
equipment.
2. Do not locate ANY gas-fired units in areas where
chlorinated, halogenated, or acid vapors are
present in the atmosphere. These substances can
cause premature heat exchanger failure due to
corrosion, which can cause property damage,
serious injury, or death.
FOR YOUR SAFETY
The use and storage of gasoline or other flammable
vapors and liquids in open containers in the vicinity
of this appliance is hazardous.
FOR YOUR SAFETY
WHAT TO DO IF YOU SMELL GAS:
1. Open windows.
2. Do not try to light any appliance.
3. Do not touch any electrical switch; do
not use any phone in your building.
4. Immediately call your gas supplier
from a neighbor’s phone. Follow the gas
supplier’s instructions. If you can not reach
your gas supplier, call your fire department.
IMPORTANT
The use of this manual is specifically intended
for a qualified installation and service agency. All
installation and service of these units must be
performed by a qualified installation and service
agency.
October, 2019