Special Precautions - Modine Manufacturing MPR Installation And Service Manual

sPecial Precautions

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.
dANGeR
Appliances must not be installed where they may be exposed
to a potentially explosive or flammable atmosphere.
WARNING
1. Failure to follow proper lifting instructions could result in
property damage, serious injury, or death. Lifting should
only be done by a qualified rigging company. Use ALL
lifting points. Test lift to ensure proper balance and
rigging. Never lift in high winds.
2. Disconnect power supply before making wiring
connections or working on this equipment. Follow all
applicable safety procedures to prevent accidental
power up. Failure to do so can result in injury or death
from electrical shock or moving parts and may cause
equipment damage.
3. For units equipped for dual power supply sources, both
sources of power must be disconnected to prevent
electrical shock and equipment damage.
4. All appliances must be wired strictly in accordance with
the wiring diagram furnished with the appliance. Any
wiring different from the wiring diagram could result in a
hazard to persons and property.
5. Any original factory wiring that requires replacement
must be replaced with wiring material having a
temperature rating of at least 105°C.
6. Ensure that the supply voltage to the appliance, as
indicated on the serial plate, is not 5% greater than the
rated voltage.
7. 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.
8. Gas pressure to appliance controls must never exceed
14" W.C. (1/2 psi).
9. To reduce the opportunity for condensation, the minimum
sea level gas 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.
10. When the dead front disconnect switch(es) (for main
unit and/or powered convenience outlet option) is in the
"OFF" position, supply power remains energized at the
line (supply) side of the dead front disconnect switch(es).
The switch body is located inside of another junction
box to protect against contact with the live wiring.
The junction box must not be disassembled unless
the main power supply from the building to the unit is
2
de-energized.
11. This unit contains R-410A high pressure refrigerant.
Hazards exist that could result in personal injury or
death. Installation, maintenance, and service must only
be performed by an HVAC technician qualified in R-410A
refrigerant and using proper tools and equipment. Due
to much higher pressure of R-410A refrigerant, DO NOT
USE service equipment or tools designed for refrigerants
other than R410A.
12. The power supply wiring for the Energy Recovery
Section comes from a single point power connection on
the unit. Disconnect power supply at model MPR before
making wiring connections to prevent electrical shock
and equipment damage.
13. 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.
1. Appliances are designed for outdoor installation only.
DO NOT LOCATE APPLIANCES INDOORS.
2. Ensure that the supply voltage to the appliance, as
indicated on the serial plate, is not 5% less than the
rated voltage.
3. Purging of air from gas lines should be performed as
described in ANSI Z223.1 - latest edition "National Fuel
Gas Code", or in Canada in CAN/CGA-B149 codes.
4. Units not approved for use in potable water systems.
5. Do not operate the unit with steam. The coil is not
designed for steam condensate removal which can
damage the unit.
6. Hot water supplied to the hot water heating option must
not exceed 180°F temperature or 75 PSIG pressure.
7. When servicing the unit, some components may be hot
enough to cause pain or injury. Allow time for cooling of
hot components before servicing.
8. Do not overcharge the refrigeration system. This can
lead to elevated compressor discharge pressure and
possibly flooding the compressor with liquid. This may
result in compressor failure not covered under warranty.
9. Do not reuse any mechanical or electrical component
which has been wet. Such components must be
replaced.
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. A properly designed drain with trap must be installed
immediately after the unit evaporator coil condensate
drain pan connection. Failure to do so will result in
condensate that cannot properly drain from the unit,
MCP15-500.7
WARNING
CAUtIoN