5-571.4
2
sPecial Precautions
THE INSTALLATION AND MAINTENANCE INSTRUCTIONS
IN THIS MANUAL MUST BE FOLLOWED TO PROVIDE SAFE,
EFFICIENT AND TROUBLE-FREE OPERATION. IN ADDITION,
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.
table of contents
Inspection on Arrival ................................................................. 1
General Information/Installation Codes .................................... 1
Special Precautions .................................................................. 2
SI (Metric) Conversion Factors ................................................. 3
Unit Location ............................................................................. 3
Location Recommendations .............................................. 3
Combustible Material and Service Clearances ................. 3
Unit Lifting ................................................................................. 4
Installation ................................................................................ 4
Direction of Airflow ............................................................. 4
Duct Installation ................................................................. 4
Airflow Distribution ............................................................. 4
Venting .............................................................................. 5
Gas Connections ............................................................... 5
Electrical Connections ....................................................... 7
Start-Up Procedure ................................................................... 7
Pilot Burner Adjustment ..................................................... 8
Main Burner Adjustment .................................................... 8
Air Shutter Adjustment ....................................................... 9
Control Operating Sequence ........................................... 10
Variable Air Movement Applications ................................ 11
Gas Control Options ........................................................ 12
Dimensional Data .............................................................. 13-14
Performance ........................................................................... 15
Air Temperature and External Static Pressure Limits ...... 15
Pressure Drop Curves ....................................................... 16-17
Maintenance ........................................................................... 18
Manifold Assembly Removal ........................................... 18
Burner and Pilot Assembly Removal ............................... 18
Service & Troubleshooting ................................................. 20-21
Automatic Reset High Limit ............................................. 20
Replacement Parts Ordering .................................................. 22
Serial Plate Location ....................................................... 22
Model Identification ................................................................. 23
Warranty ................................................................................. 24
2
sPecial Precautions / table of contents
IMPORTANT
1. To prevent premature heat exchanger failure, do not locate
ANY gas-fired appliances in areas where corrosive vapors
(i.e. chlorinated, halogenated or acid) are present in the
atmosphere.
2. To prevent premature heat exchanger failure, observe heat
exchanger tubes by looking at the heat exchanger through
field installed access openings in connecting ductwork. If
the bottom of the tubes become red while blower and duct
furnace are in operation, additional baffles must be inserted
between blower and duct furnace to assure uniform air flow
across the heat exchanger.
3. To prevent premature heat exchanger failure, the input to the
appliance, as indicated on the serial plate, must not exceed
the rated input by more than 5%.
4. To prevent premature heat exchanger failure, with all control
systems, a blower starting mechanism must be provided so
that the blower is running or energized within 45 seconds of
the gas control operation.
5. Start-up and adjustment procedures should be performed
by a qualified service agency.
6. To check most of the Possible Remedies in the
troubleshooting guide listed in Table 20.1, refer to the
applicable sections of the manual.
cAUTION
1. Appliances are designed for outdoor installation only. DO
NOT LOCATE APPLIANCES INDOORS.
2. Purging of air from gas supply line should be performed
as described in ANSI Z223.1 - latest edition “National Fuel
Gas Code”, or in Canada in CAN/CGA-B149 codes.
3. Do not reuse any mechanical or electrical component which
has been wet. Such component must be replaced.
dANGER
Appliances must not be installed where they may be exposed
to a potentially explosive or flammable atmosphere.
WARNING
1. All field gas piping must be pressure/leak tested prior to
operation. Never use an open flame. Use a soap solution or
equivalent for testing.
2. Gas pressure to appliance controls must never exceed 14"
W.C. (1/2 psi).
3. To reduce the opportunity for condensation, the minimum sea
level input to the appliance, as indicated on the serial plate,
must not be less than 5% below the rated input, or 5% below
the minimum rated input of dual rated units.
4. Disconnect power supply before making wiring
connections to prevent electrical shock and equipment
damage.
5. 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.
6. Any original factory wiring that requires replacement must
be replaced with wiring material having a temperature
rating of at least 105°C.
7. Ensure that the supply voltage to the appliance, as indicated
on the serial plate, is not 5% greater than rated voltage.
8. 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 the factory will be at the
owner's risk.
