How it Works
Bryant
Loading...
Magna VF750C
Service Manual
12 pgs3.03 Mb0

Bryant Magna VF750C, Magna VF750CD, 548J*D Series Service Manual

548J***D
SINGLE PACKAGE ROOFTOP HEAT PUMP UNITS WITH FIELD--INSTALLED ELECTRIC HEAT SIZES 17 & 24 WITH PURONR(R--410A) REFRIGERANT
Submittal Data
Use of the AHRI Certified TM Mark indicates a manufacturer’s participation in the program For verification of certification for individual
9001
products, go to www.ahridirectory.org.
STANDARD FEATURES
DESCRIPTION
548J***D units are one--piece, two--stage heat pump units that are low profile, prewired, tested and charged at the factory. These are intended for installation on a roof curb accessory (ordered separately), or for slab mounting (for horizontal duct connections). Units are designed to accept field--installed electric heaters. Units may be ordered with various factory--installed options. Field--installed accessories are also available.
Base Unit
S Puron (R--410A) HFC refrigerant S EER’s up to 10.8 S IEER’s:
— up to 11.5 with single speed indoor fan motor — up to 12.0 with 2--speed/VFD indoor fan motor
S COP’supto3.3 S ASHRAE 90.1 energy compliant S Rated in accordance with AHRI Standard 340/360 S Designed in accordance with Underwriters’
Laboratories Standard 1995
S Listed by ETL and ETL--Canada S Two--stage cooling capacity control on all models S Non--corrosive composite sloping design; side or center
drain condensate pan. Meets ASHRAE Standard 62
S Cooling operating range from 30_Fupto115_F
(--1_Cupto46_C).
S Dedicated vertical and horizontal airflow models
available, ordered as factory option. No special kits required
S Two--inch disposable return air filters S Thru--the--bottom power entry capability S Single point electric connections on field--installed
electric heat units
S 24--volt control circuit protected with resettable circuit
breaker and 75--VA transformer
S Belt drive, constant torque, permanently lubricated
evaporator--fan motor on all size units.
S Totally enclosed condenser motors with permanently
lubricated bearings
S State--of--the--art defrost control board, easily configured
for defrost cycles of 30, 60, 90, or 120 minutes.
S Central Terminal Board for component and unit wiring
connections.
S Loss of Charge, High--Pressure, and Freeze Protection
switches
S Full perimeter base rail with built--in rigging adapters
andforktruckslots.
Cabinet
S Access panels with easy grip handles S Innovative, easy starting, no strip screw features on unit
access panels.
S Pre--painted exterior panels and primer--coated interior
panels tested to 500 hours salt spray protection
S Fully insulated cabinet S Tool--less filter access door
Refrigerant System
S Precision sized TXV refrigerant metering devices S Liquid line filter drier S Scroll compressors with internal line--break overload
protection
S Indoor and outdoor coils constructed of aluminum fins
mechanically bonded to seamless copper tubes.
S Removable gauge line plugs for reading refrigerant
pressure with unit panels in place
S Four--way reversing valve operation S Suction Line Accumulator standard -- prevents
excessive liquid flood back of refrigerant to the compressor even during the start of the defrost cycle.
Standard Parts Warranty
S 5--year electric heater (field--installed) S 5--year compressor S 1--year parts
Job Name Architect Engineer Contractor
STANDARD FEATURES (cont.)
SUBMITTAL DATA
548J***D
Unit Operating Weight lb
Unit Designation
Cooling
Net Total Capacity Btuh Net Sensible Capacity Btuh Compressor Power Input kW
at Outdoor Air Temperature _F Indoor Entering Air db: _Fwb _F Airflow CFM External Static Pressure in.wg
PERFORMANCE DATA
Curb Weight lb
Heating
Power Input to Unit kw Integrated Capacity Btuh Indoor Operating Air Temperature _F
db Outdoor Air Temperature _F (Winter Design) Rating at 70% R.H. Outdoors kW Heater Selected
Heat/Cool Ratio
Electrical Capacity Required Btuh
Power Supply to Unit Volts Phase Hz Minimum Circuit Amps Maximum Overcurrent Protection (Fuse Only)
ELECTRICAL DATA
2
FACTORY--INSTALLED OPTIONS (FIOPs)
j Economizer with DRY BULB sensing and barometric
relief
Standard Air Leak Dampers — f Models with W7212 controller provides standard
non--diagnostic control. EconoMi$er IV.
f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er 2.
j Economizer with E
NTHALPY sensing and barometric
relief
Standard Air Leak Dampers — f Models with W7212 controller provides standard
non--diagnostic control. EconoMi$er IV.
f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er 2.
j Economizer with D
RY BULB sensing and barometric
relief
ULTRA LOW LEAK Air Dampers — f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements -­plus 5 year limited parts warranty. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements -­plus 5 year limited parts warranty. EconoMi$er 2.
j Economizer with E
NTHALPY sensing and barometric
relief
ULTRA LOW LEAK Air Dampers — f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements -­plus 5 year limited parts warranty. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements -­plus 5 year limited parts warranty. EconoMi$er 2.
j 2--Speed Indoor Fan Motor system utilizes a Variable
Frequency Drive (VFD) to automatically adjust the indoor fan motor for 2 speed indoor fan motor control. Conforms to ASHRAE 90.1 2010 Standard – section 6.4.3.10.b.
j RTU Open multi--protocol controller communicates to
LON, MODBUS, BACNET and Johnson N2 protocols.
j Dedicated vertical discharge and return air units j Dedicated horizontal discharge and return air units j Two--position motorized outdoor air damper j Non--fused disconnect switch (80 A Max) j Powered 115--volt convenience outlet j Non--powered 115--volt convenience outlet j High static indoor fan motor and drive j Return Air smoke detector j Supply Air smoke detector j Pre--coated Al/Cu condenser coil j E--coated Al/Cu condenser coil j E--coated Al/Cu condenser and evaporator coil j Cu/Cu condenser coil j Cu/Cu condenser coil and evaporator coil j Condenser hail guard — louvered style j CO
sensor
2
OPTIONAL WARRANTIES
j Complete Unit Parts only up to 5 years j Complete Unit Parts and Labor up to 5 years
Many other optional warranties are available. See the Commercial Start--Up and Optional Extended Warranty Price price pages for further information.
548J***D
3
FIELD INSTALLED ACCESSORIES
j Economizer with DRY BULB sensing and barometric
relief
Standard Air Leak Dampers — f Models with W7212 controller provides standard
non--diagnostic control. EconoMi$er IV.
f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er 2.
j Economizer with E
NTHALPY sensing and barometric
relief
Standard Air Leak Dampers — f Models with W7212 controller provides standard
non--diagnostic control. EconoMi$er IV.
548J***D
f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements. EconoMi$er 2.
j Economizer with D
RY BULB sensing and barometric
relief
ULTRA LOW LEAK Air Dampers — f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements. EconoMi$er 2.
j Display Kit for Variable Frequency Drive (VFD),
2--Speed Indoor Fan Motor System. Allows additional set up and diagnostics of the unit VFD controller. Can be unit mounted or used with any other compatible VFD model as a reusable device
j Power Exhaust — vertical or horizontal j Electric heat j Single point kit j Two--position motorized outdoor air damper j Manual outdoor air damper 25% j Manual outdoor air damper 50% j Roofcurb — 14 inch (356mm) tall j Roofcurb — 24 inch (610mm) tall j Time Guard II compressor anti--cycle control j Outdoor coil hail guard — louvered style j Low ambient head pressure controller, down to --20_F
(--29_C) j Thermostats and Sensors j Phase Monitor j Barometric Relief hood (for horizontal economizers)
Economizer Sensors
j Single Dry bulb control j Differential Dry bulb control j Single enthalpy control j Differential enthalpy control j CO j CO
-- wall mounted
2
-- duct mounted
2
j Economizer with E
NTHALPY sensing and barometric
relief
ULTRA LOW LEAK Air Dampers — f Models with W7220 controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements. EconoMi$er X.
f Models with RTU Open controller meets California
Title 24 (section 120.2) Fault Detection and Diagnostic (FDD) requirements, has return, outside air and relief damper leakage that meets Title 24 (section 140.4 and ASHRAE 90.1) requirements. EconoMi$er 2.
4
Loading...
+ 8 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use