Operation & Maintenance Manual
VGB & HGB Series
Classroom Fan Coil Units
Form VGB-OM-MANUAL-Rev02
IMPORTANT:
Read and save this manual for future reference.
This manual is to be left with the equipment owner
Страница 1: ...Operation Maintenance Manual VGB HGB Series Classroom Fan Coil Units Form VGB OM MANUAL Rev02 IMPORTANT Read and save this manual for future reference This manual is to be left with the equipment owner ...
Страница 2: ...trategy with Chilled Water Cooling Electric or Hot Water Heating 6 Control Strategy with DX Cooling Electric or Hot Water Heating 7 Chilled Water Circuit 8 Refrigeration Circuit 9 Electrical Circuit 10 Damper 10 Filtration 10 MAINTENANCE Servicing the Unit 11 Maintenance Schedule 11 Changing the Filters 12 Cleaning the Evaporator Coils 12 Motors 12 TROUBLESHOOTING Basic Troubleshooting Guidelines ...
Страница 3: ...ach room Because the unit can be ducted an even distribution of air can be achieved throughout the room The classroom fan coil unit is constructed with heavy gauge metal and sound absorbing insulation for optimal sound attenuation By applying sound engineering principles and thorough testing we ensure the highest quality of performance in our unit ventilators ABOUT THE CLASSROOM FAN COIL UNIT NOME...
Страница 4: ...turn air filter O A 9 5 23 S A Supply Air SIDE SECTION 12 R A 8 7 6 4 1 2 S A 3 5 8 Heavy duty return air grille 9 Outdoor air fan 10 Outdoor air filter 11 Outdoor air damper 12 Optional electric freeze protection 13 Coil access panel 14 Return air access panel FRONT ELEVATION R A Return Air 33 14 13 S A 93 NOTE The component arrangement shown above may vary slightly from that in the unit supplied...
Страница 5: ...or chilled water 11 10 9 O A 4 7 23 SIDE SECTION S A Supply Air 12 R A 8 5 3 2 6 4 S A 8 Return air grille 9 Outdoor air fan 10 Outdoor air filter 11 Outdoor air damper 12 Optional electric freeze protection 13 Coil access panel 14 Return air access panel 15 Heavy duty return air grille FRONT ELEVATION 15 14 33 R A Return Air S A 13 S A 93 1 NOTE The component arrangement shown above may vary slig...
Страница 6: ... By Others O A 7 2 3 1 5 R A 4 6 8 93 12 x 10 Supply Air Opening 8 Drain pan Drain pan is removable when option for bottom access panels is selected 9 Electrical control enclosure 10 Optional Electric heater 11 Supply air fan 12 Mounting brackets 4 per unit 13 Left or Right side hinged filter access panel 14 Left or Right side hinged coil access panel 14 12 S A 33 R A Return Air 9 11 Duct By Other...
Страница 7: ... HGB SeriesRev3 doc 6 OPERATION Control Strategy For a Temspec VGB or HGB series classroom fan coil unit with type V stand alone control package thermostat model OC 3 UNIT WITH CHILLED WATER COOLING ELECTRIC OR HOT WATER HEATING ...
Страница 8: ... Manual VGB HGB SeriesRev3 doc 7 Control Strategy For a Temspec VGB or HGB series classroom fan coil unit with type V stand alone control package thermostat model OC 3 UNIT WITH DX COOLING ELECTRIC OR HOT WATER HEATING ...
Страница 9: ...LLED WATER COIL P T Port Union Balancing Valve Strainer Union Air Vent P T Port Union 2 way Contol Valve Balancing Valve OUTSIDE CABINET INSIDE CABINET SUPPLY 3 4 Union Ball Valve SUPPLY 1 1 4 RETURN 1 1 4 RETURN 3 4 Ball Valve SUPPLY 3 4 Ball Valve RETURN 3 4 Ball Valve Warning City water is very corrosive to brass Components Provide water treatment as soon as the system is charged to avoid prema...
Страница 10: ... SPLIT CONDENSING UNIT OUTDOOR AIR PT Pressure Tap PT 1 PT Electric or Hot Water Auxiliary Heat Notes Line sizes between the condensing unit s and unit ventilator depend on length and elevation changes Please see additional information in the installation instructions Field install a sight glass on the liquid line leaving the primary condensing unit 1 2 Outdoor Air Damper TXV PT High pressure cont...
Страница 11: ...tdoor air damper is controlled by a spring return damper actuator The damper actuator will close the outside air damper upon loss of power The damper actuator manufacturer can vary Please refer to the wiring schematic for the damper actuator model type Typically 2 disposable filters are provided in the unit Please refer to the shop drawings for specific details on filter construction and thickness...
Страница 12: ...alled that will shut the supply air fan off once the panel is removed This will only disconnect the power to the supply air fans Be sure to disconnect ALL power by turning the remote disconnect switch to the off position Frequency maintenance greatly depends on the surrounding conditions inside and outside of the building The following is a typical maintenance schedule for a classroom fan coil uni...
Страница 13: ... and replace To clean the evaporator coil purchase a suitable evaporator coil cleaning solution such as those offered by NU CALGON www nucalgon com Follow the manufacturers instructions for use Note Chlorine based or anti fungal pucks or socks are acceptable when placed in the evaporator drain pan Be sure to vacuum the drain pan during the cleaning process If the filters are regularly changed the ...
Страница 14: ...Check to see if the 24V transformer is defective Ensure that wire connections are secured properly Check to see if motor is burned out Outdoor air fan does not supply enough air Adjust the fan speed control located in the unit Check to see if the unit has a proper seal from the back of the unit to the outside louver NOTE If the return air measurement combined with the outdoor air measurement does ...
Страница 15: ...ts be required within the warranty period they will be supplied at no charge freight prepaid to the jobsite The cost of labor or incidental expenses incurred in the repair or replacement of parts does not form part of this warranty The warranty period commences from the date of shipment except when otherwise agreed at the point of sale see specific warranty terms and conditions for details Contact...
