Bryant Legacy Series, Preferred Series, Legacy 674D, Legacy 677C, Preferred 674D Owner's Information Manual
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674D AND 677C
LEGACYt AND PREFERREDt 13 AND 14 SEER
SINGLE--PACKAGED HYBRID HEATr DUAL FUEL SYSTEM
WITH PURON (R--410A) REFRIGERANT SINGLE AND THREE PHASE
2 --5 NOMINAL TONS (SIZES A24--A60)
Owner’s Information Manual
Fig. 1 -- Unit 674D
A09034
Fig. 2 -- Unit 677C
A09042
NOTE TO EQUIPMENT OWNER:
For your convenience, please record the model and serial numbers of your new equipment in the spaces
provided. This information, along with the installation data and dealer contact information, will be helpful
should your system require maintenance or service.
UNIT INFORMATION
Model # _____________________________________
Serial # ______________________________________
ACCESSORIES (List type and model #)
_____________________________________________
_____________________________________________
_____________________________________________
NOTE TO INSTALLER:
This manual must be left with the equipment owner.
INSTALLATION INFORMATION
Date Installed ________________________________
DEALERSHIP CONTACT INFORMATION
Company Name_______________________________
Address______________________________________
_____________________________________________
Phone Number _______________________________
Technician Name _____________________________
_____________________________________________
1
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous dueto
mechanical and electrical components. Only trained and qualified
personnel should install, repair, or service this equipment.
Untrained personnel canperformbasicmaintenance functionssuch
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions
that may apply.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Have fire extinguisher available. Read these instructions thoroughly and follow all warningsor cautionsincluded
in literature and attached to the unit. Consult local building codes,
the current editions of the National Fuel Gas Code (NFGC) NFPA
54/ANSI Z223.1, and the National Electrical Code (NEC) NFPA
70.
In Canada refer to the current editions of the National Standards of
CanadaCAN/CSA--B149.1 and .2 NaturalGasand Propane Installation codes, and Canadian Electrical Code CSA C22.1.
Recognize safety information. This is the safety--alert symbol
Whenyou see this symbol on the unit and in instructionsor manuals,
be alert to the potential for personal injury.
Understand these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies hazards which could
result in personal injuryor death.CAUTION is used to identify unsafe practices which may resultin minorpersonal injury or product
and property damage.NOTE isused tohighlightsuggestions which
will result in enhanced installation, reliability, or operation.
Note: Installer: This manual should be left withthe equipment user.
!
WARNING
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
When removing access panels or performing maintenance
functions insideyour unit, be awareof sharp sheet metal parts
and screws. Although special care is taken to reduce sharp
edges to a minimum, be extremely careful when handling
parts or reaching into the unit.
!
FIRE AND EXPLOSION HAZARD
What to do if you smell gas:
1. Do not try to light any appliance.
2. Do not touch any electrical switch; do not use any phone in
your building.
3. Leave the building immediately.
4. Immediately call your gas supplier from a nearby phone.
!
!
Follow the gas supplier’s instructions.
5. If you cannot reach your gas supplier, call the fire
department.
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
and/or death.
Before performing recommended maintenance, be sure the
main power switch to unit is turned off and lock--out tag is
installed.
CAUTION
WARNING
WARNING
FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Installation and servicing of this equipment can be hazardous
due to mechanical and electrical components. Only trained
and qualified personnel should install repair or service this
equipment.
!
FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury,
death or property damage.
Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the
unit and to replace any part of the control system which has
been under water.
WARNING
!
FIRE,EXPLOSION, ELECTRICAL SHOCK HAZARD
Failure to follow this hazard warning could result in personal
injury, death and/or property damage.
1. Do not turn off the electrical power to unit without first
turning off the gas supply.
2. Before attempting to start the gas heating section,
familiarize yourself with all the procedures that must be
followed.
FIRE, EXPLOSION HAZARD
Failure to follow this warning could resultin personalinjury,
death, and/or property damage.
Do not attempt to light by hand.
WARNING
!
WARNING
2
UNIT INTRODUCTION
The 674D and 674D units are small packaged gas heat/electric heat
pump systems that can utilize both the efficiency of heat pump heating and the comfort of gas heating. The system will optimize for
idealheating, depending on several factors.This unit uses Puron®,
the ozone friendly refrigerant, for cooling and heat pump heating.
Starting or Shutting Off Unit
Note:Your combination heating/cooling unit is equipped with an
automatic direct spark ignition and power combustion blower.
burners do not light within 15 minutes of the initial call for
heat, there is a lockout.
11. Set the temperature selector on room thermostat to desired
setting.
Flue Hood
Burners
Gas Valve
A09043
Fig. 4 -- Gas Heating/Electric Cooling Unit with
Access Panel Removed
Access Panels
A09036
Fig. 3 -- Gas Heating/Electric Cooling Unit Access
Panels
To start unit gas heat:
Refer to Fig. 3 for location of unit front access panel. Refer to Fig.
4 for location of gas valve. Refer to Fig. 6 while proceeding with
the following steps.
1. Setthetemperatureselector on room thermostat to thelowest
temperature setting and set system switch to Emergency
Heat.
2. Close the external manual gas shutoff valve.
3. Turn off the electrical supply to the unit.
4. Remove the front access panel with a 5/16 --in. nut driver.
5. Move the selectorswitchon the internalgas valve to theOFF
position and wait 5 minutes.
6. Move the selector switch on the internal gas valve to the ON
position.
7. Replace the front access panel.
8. Turn on the electrical supply to unit.
9. Open the external manual gas shutoff valve.
10. Set the temperature selector on room thermostat slightly
above room temperature to start unit. The induced--draft
combustion air fan will start. Main gas valve will open and
main burners should ignite within 5 seconds. If the burner
does not light within 5 seconds, the ignition module willgo
into a Retry Mode after a period of approximately 22
seconds (following the 5--second ignition period). If the
!
FIRE AND EXPLOSION HAZARD
Failure to follow this warning could resultin personalinjury,
death, and/or property damage.
1. If the main burners fail to light, or the blower fails to start,
shutdown gas heatingsection and call your dealerfor service.
2. Never attempt to manually light the main burners on unit
with a match, lighter, or any other flame. If the electric
sparking device fails to light the main burners, refer to the
following shutdown procedures, then call your dealer as soon
as possible.
To shut off unit gas heat:
!
FIRE, EXPLOSION, ELECTRICAL SHOCK
HAZARD
Failure to follow this warning could resultin personalinjury,
death, and/or property damage.
Do not turn off the electrical power to unit without first
turning off the gas supply.
Note:If the unit is being shut down because of a malfunction, call
your dealer as soon as possible.
Should overheating occur or the gas supply fail to shut off, shut off
the external manual gas valve to the unit before shutting off the electrical supply. Do not use this unit if any part has been under water.
Immediately call a qualified service technician to inspect the unit
and to replace any part of the control system and any gas control
which has been under water.
Refer to Fig. 7 while proceeding with the following steps.
1. Set the temperature selector on room thermostat to lowest
temperature setting and set system SWITCH to OFF.
2. Close the external manual shutoff valve.
3. Turn off the electrical power supply to the unit.
4. Remove the front access panel.
5. Move the selector switchon the internalgas valveto theOFF
position.
6. Replace the front access panel.
3
WARNING
WARNING
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