IEC G Y Series Installation, Operation & Maintenance Manual Download Page 15

Cabinet Heater G*Y/D*Y Series

INSTALLATION, OPERATION, & MAINTENANCE MANUAL

15

SECTION ONE — Installation, Cont'd.

4.  Secure incoming power wiring with proper 

service entrance connector and/or appropriate 
strain relief. Use wire nuts connections that meet 
wire gauge requirements.

5.  Replace cover plate and secure screws.

Figure 16. External unit-mount control box access

Figure 17. Unit-mounted control box access

*NOTE – Image depicts control box mounted in DBY unit

Figure 18. Thermostat unit-mount

*NOTE – Image below depicts control box with Venture Wi-Fi Thermostat

Ductwork Connections

All ductwork and/or supply and return grilles should 
be installed in accordance with the project plans and 
specifications. If not included on the unit or furnished from 
the factory, supply and return grilles should be provided as 
recommended in the product catalog.

For units with no return-air ductwork, check local code 
requirements for possible application restrictions. All units 
must be installed in areas that are non-combustible.

Some models are designed to be connected to ductwork 
with a MINIMUM amount of external static pressure. 
These units may be damaged by operation without 
the proper ductwork connected. Consult the approved 
submittals and the product catalog for unit external static 
pressure limitations.

Units provided with outside air for ventilation should have 
some form of low-temperature protection to prevent coil 
freeze-up.

Flexible duct connections should be used on all air 
handling equipment to minimize vibration transmissions. 
All ductwork and insulation should be installed to allow 
proper access to all components for service and repair 
such as filters, motor/blower assemblies, etc.

Summary of Contents for G Y Series

Page 1: ...ATION MAINTENANCE MANUAL Vertical Horizontal Vertical floor or wall mounted for concealed or exposed applications Horizontal ceiling for exposed or partially exposed applications Hot water coils steam...

Page 2: ...of its products International Environmental Corporation IEC works continually to improve its products As a result the design and specifications of each product may be changed without notice and may no...

Page 3: ...placement Parts SECTION FIVE Equipment Start Up 32 Check List IMPORTANT 33 Terms and Conditions SECTION ONE Installation 4 Preface 4 Unpacking and Inspection 5 Prepare Jobsite and Units 5 Handling and...

Page 4: ...pressures as shown on unit rating plate Always pressure test with an inert fluid or gas such as clear water or dry nitrogen to avoid possible damage or injury in the event of a leak or component fail...

Page 5: ...uired 3 Perform Dry Fit of valve assembly that may be shipped unattached to unit coil assembly Should any questions arise on fit up please contact your local representative immediately Handling and In...

Page 6: ...t and recessed units have removable front panels to allow access to the unit Hydronic Heat units have either right or left hand piping Reference piping locations by facing the front of the unit airflo...

Page 7: ...48 1219 06 55 1397 53 1346 08 55 1397 60 1524 10 77 1956 74 1880 12 77 1956 83 2083 Table 2 Horizontal Ceiling Coil Removal Minimum Service Clearance Width 12 18 in see table 2 28 in 28 in Figure 4 D...

Page 8: ...he floor is able to support the weight of the unit See submittal drawings for nominal unit weight 3 Ensure wall behind unit is smooth and plumb if necessary install furring strips on walls with irregu...

Page 9: ...t into the wall of the conditioned areas They cover the recess opening on all sides and are easily removed for access to the unit A top bottom and side framing studs are required to properly secure th...

Page 10: ...ies INSTALLATION OPERATION MAINTENANCE MANUAL 10 SECTION ONE Installation Cont d Figure 8 Style W Framed Wall Panel Install Diagram Figure 9 Style Z Framed Wall Panel Style Z Figure 10 Style Z Framed...

Page 11: ...ing the mounting points provided with 3 8 all thread rod and other hardware not supplied with unit The unit must be positioned so that the coil or electric heat elements are on a LEVEL PLANE Other fie...

Page 12: ...penetrate the rear of the fan coil cabinet Hot extension tubes must be properly insulated Hydronic Heating Connections After mounting the unit it is then ready for the various service connections suc...

Page 13: ...n accordance with the project specifications This is the responsibility of the installing or insulation contractor Electrical Connections The electrical service to the unit should be compared to the u...

Page 14: ...g codes and ordinances Any modification of the unit wiring without factory authorization will void all of the factory warranties and will nullify any agency listings The manufacturer assumes no respon...

Page 15: ...om the factory supply and return grilles should be provided as recommended in the product catalog For units with no return air ductwork check local code requirements for possible application restricti...

Page 16: ...ected to verify that all systems are complete and properly installed and mounted and that no debris or foreign articles such as paper or drink cans are left in the units or other areas Clean dirt dust...

Page 17: ...struction During this procedure all unit service valves must be in the closed position This prevents foreign matter from entering the unit and clogging the valves and metering devices Strainers shoul...

Page 18: ...ould not be attempted by unqualified personnel The system must be complete and all components must be in operating condition BEFORE beginning water system balancing operations Each hydronic system has...

Page 19: ...N8 Line Service Voltage 9 CN9 PSC Motor Connection 10 CN10 ECM Connection 11 ECM Fan Speed Adjustment 12 Ground Connection 13 LED Diagnostics for Multimeter Diagnostics 85 Control Board E025 71481108...

Page 20: ...ed IEC 24V Thermostat Does not apply to proportional or Line voltage thermostat controls The diagram below represents a factory installed IEC 24V thermostat Connection Function Description 10V Not use...

Page 21: ...sor RAS Room air sensor 2 CN2 Changeover Return Air Sensor l Power connector for 24V or Common powered sensors m 24V powered sensors l Applicable for IEC supplied air sensor for Wi Fi E055 71520330 Pr...

Page 22: ...ontact factory for applications l CLG or HTG LED indication when either 1st stage cooling or heating activated 7 CN7 Class II Transformer l 40VA 75VA option l 24V LED activated when powered 8 CN8 Inco...

Page 23: ...low Adjusting the potentiometers requires the use of a Multi meter capable of measuring 0 5 vdc 1 Only trained and qualified individuals should attempt to adjust or service components on any electrica...

Page 24: ...flow for 0 10 VDC If a factory provided thermostat or DDC controller is utilized then the unit is already correctly configured Eco 2 Variable Airflow for 0 10 VDC No control board is required and no f...

Page 25: ...C is applied to HTG that control signal will passively be present at Pin 8 of the CN6 connector HTG LED shows GREEN Signal for 1st stage cooling valve present G Fan Low Speed 24VAC LOW 24VAC signal ap...

Page 26: ...es INSTALLATION OPERATION MAINTENANCE MANUAL 26 SECTION THREE Controls Operation Cont d Example Wiring Diagram Electric Heat Only NOTE Wiring diagram also available through QR code found on the unit s...

Page 27: ...INSTALLATION OPERATION MAINTENANCE MANUAL 27 SECTION THREE Controls Operation Cont d Example Wiring Diagram 2 Pipe Hydronic Heat Only NOTE Wiring diagram also available through QR code found on the un...

Page 28: ...he assembly require more extensive service the motor blower assembly may be removed from the unit to facilitate such operations as motor or blower wheel housing replacement etc Dirt and dust should no...

Page 29: ...uous operation With proper unit application and operation the high limit thermal cutout will not operate This device only operates when a problem exists and ANY condition that causes high limit cutout...

Page 30: ...e recorded in the log for each unit Refer to the product catalog for the recommended filter size for each product type and size If the replacement filters are not purchased from the factory the filter...

Page 31: ...ification 1 Complete unit model number 2 Unit serial number 3 Complete part description including any numbers For warranty parts inquiries in addition to the information previously listed a descriptio...

Page 32: ...illed water line size to unit Proper hot water line size to unit All services to unit in code compliance All shipping screws and braces removed Unit protected from dirt and foreign matter Heating Conn...

Page 33: ...the event of a breach of the Limited Express Warranty IEC will only be obligated at IEC s option to repair the failed part or unit or to furnish a new or rebuilt part or unit in exchange for the part...

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Page 36: ...Series INSTALLATION OPERATION MAINTENANCE MANUAL Contact your local IEC Sales Representative for further details and pricing applicable to this product Visit our website iec okc com to find your local...

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