Instruction/ maintenance manual of the product 473501 Greenheck Fan
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1 Model ERCH-HP Energy Recovery Unit ® Installation, Operation and Maintenance Manual Please read and save these instructions. Read car efully before attempting to assemble, install, operate or maintain the product described. Pr otect yourself and others by observing all safety information.
2 Model ERCH-HP Energy Recovery Unit Receiving Upon receiving the pr oduct, check to make sure all items are accounted for by r eferencing the bill of lading to ensure all items wer e received. Inspect each crate for shipping damage before accepting delivery .
3 Model ERCH-HP Energy Recovery Unit T able of Contents General Safety Information .................... 1 Receiving, Handling and Storage ............... 2 Product Overview ............................ 4 Models and Capacities ........................ 4 Subassemblies Coils .
4 Model ERCH-HP Energy Recovery Unit Models and Capacities This unit is manufactured in four dif ferent platform sizes; 20, 45, 55 and 90. Each platform has multiple options for heating and cooling capacities.
5 Model ERCH-HP Energy Recovery Unit Coils The airside coil is connected to the heat pump compressor(s) and is the primary vehicle for heating and cooling of the building. A reheat coil is optionally available and is installed in the supply airstream adjacent to the airside coil.
6 Model ERCH-HP Energy Recovery Unit Heat Pump Module Every unit has an integral heat pump module that contains hermetic scroll-type compr essor(s), a coaxial refrigerant-to-water heat exchanger(s), r.
7 Model ERCH-HP Energy Recovery Unit Installation Model Overall Exterior Dimensions Width (including Lifting Lugs) Overall Width (with Exhaust Hood) Overall Length (with Outdoor Air Hood) ERCH-HP 20 59.5 75 116 ERCH-HP 45 69.5 86 122 ERCH-HP 55 79.5 101 134 ERCH-HP 90 99.
8 Model ERCH-HP Energy Recovery Unit Service Clearances Minimum clearances are r equired for access on all sides for r outine maintenance. Filter r eplacement, drain pan inspection and cleaning, ener gy wheel cassette inspection, fan bearing lubrication and belt adjustment are examples of routine maintenance that must be performed.
9 Model ERCH-HP Energy Recovery Unit Handling While this unit was constructed with quality and dependability in mind, damage still may occur during handling of the unit for installation. Exercise extr eme caution to prevent any damage fr om occurring to the refrigerant system.
10 Model ERCH-HP Energy Recovery Unit E D C A B SIDE OF UNIT ROOF CURB BASE 1 INCH INSULA TION Curb Outside Dimensions and W eights Curb Cap Dimensions Unit Size A B C D E ERCH-HP 20 2.00 2.00 1.00 0.88 0.75 ERCH-HP 45 2.00 4.25 2.00 1.31 0.50 ERCH-HP 55 2.
11 Model ERCH-HP Energy Recovery Unit Rail Mounting Unit Size A B ERCH-HP 20 5.0 41.0 ERCH-HP 45 7.0 41.9 ERCH-HP 55 5.5 53.0 ERCH-HP 90 6.0 59.0 All dimensions are in inches. Rail Mounting / Layout • Rails designed to handle the weight of the unit should be positioned as shown on the diagram (rails by others).
12 Model ERCH-HP Energy Recovery Unit Start-Up Unit DANGER Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit to OFF at disconnect switch(es). Unit may have multiple power supplies.
13 Model ERCH-HP Energy Recovery Unit Pre-Start-Up Checklist o Disconnect and lock-out all power switches. o Remove any foreign objects that are located in the ener gy recovery unit. o Check all fasteners, set-screws, and locking collars on the fans, bearings, drives, motor bases and accessories for tightness.
14 Model ERCH-HP Energy Recovery Unit Line V oltage. Check at unit disconnect. L1-L2 V olts L2-L3 V olts L1-L3 V olts Motor Amp Draw Supply Motor Amps L1 Amps L2 Amps L3 Amps Exhaust Motor Amps L1 Amp.
15 Model ERCH-HP Energy Recovery Unit Electrical Information Determine the Size of the Main Power Lines The unit’ s nameplate states the voltage and the unit’ s MCA. The main power lines to the unit should be sized accordingly . The nameplate is located on the outside of the unit on the control panel side.
16 Model ERCH-HP Energy Recovery Unit Most factory-supplied electrical components are prewir ed. T o determine what electrical accessories requir e additional field-wiring, refer to the unit-specific wiring diagram located on the inside of the control center access door .
17 Model ERCH-HP Energy Recovery Unit Optional Remote Contr ol Panel and W iring Schematics Indicator Lights powered by the ER Unit Dirty Filter Indicator (power by others) Heating/Cooling Switches an.
18 Model ERCH-HP Energy Recovery Unit 1 8 7 5 6 17 16 15 14 13 12 11 10 18 2 3 4 9 T ypical Contr ol Center Components - individual components and locations will vary Refer to “Heat Pump System” section for components in compressor compartment 1. Main disconnect (non-fusible, lockable) 2.
19 Model ERCH-HP Energy Recovery Unit Electrical Contr ols Optional Frost Contr ol Extremely cold outdoor air temperatur es can cause moisture condensation and fr osting on the enthalpy wheel. Frost contr ol is an optional feature that will prevent/contr ol wheel frosting.
20 Model ERCH-HP Energy Recovery Unit Optional Economizer The ener gy wheel operation can be altered to take advantage of economizer operation (free cooling). T wo modes are available: 1. De-energizing the wheel. 2. Modulating the wheel. A field-supplied call for cool (Y1) is requir ed.
21 Model ERCH-HP Energy Recovery Unit Optional Rotation Sensor The rotation sensor monitors ener gy wheel r otation. If the wheel should stop rotating, the sensor will close a set of contacts in the unit control center .
22 Model ERCH-HP Energy Recovery Unit Ener gy Wheel Start-Up If selected, the ener gy wheel is installed in the unit’ s airstream with one half of the wheel in the intake airstream and one half in the exhaust airstr eam.
23 Model ERCH-HP Energy Recovery Unit Energy Wheel Maintenance Inspection The wheel should be inspected semiannually in accordance with the maintenance schedule. Maintenance of the wheel consists mainly of inspecting the wheel for cleanliness and then checking the drive motor , belt, and pulley for wear .
24 Model ERCH-HP Energy Recovery Unit Every unit has a complete, sealed refrigeration system that is ready for connection to a water sour ce. The heat pump has all the typical DX components and also has refrigerant r eversing valve(s) to enable the system to work in both heating and cooling modes.
25 Model ERCH-HP Energy Recovery Unit Crankcase Heater A crankcase heater is installed around the base of each compressor in the unit to boil-of f any liquid refrigerant that may be absorbed into the oil during idle periods. It is recommended the heater operate 24 hours prior to the compressors being started.
26 Model ERCH-HP Energy Recovery Unit Refrigeration System Schematic T ypical Operating Conditions Location Refrigerant State T emperature Pr essure Superheat/Subcool Cooling Mode / Refrigerant Proper.
27 Model ERCH-HP Energy Recovery Unit Unit Pr otection Module (UPM) Fault Indications Each unit includes one Unit Protection Module (UPM) printed circuit boar d and each UPM has two LED indictor lights.
28 Model ERCH-HP Energy Recovery Unit T r oubleshooting - Contr oller Alarms The first step in troubleshooting the unit is to check the on-board alarm indicators. Several of the electr onic controls in the unit monitor the system for faults and will go into alarm, shutting down the unit or a single function within the unit.
29 Model ERCH-HP Energy Recovery Unit Symptom Possible Cause Corrective Action Blower fails to operate Blown fuse or open circuit br eaker . Replace fuse or reset cir cuit breaker and check amps. Defective motor or capacitor . Replace. Motor starter overloaded.
30 Model ERCH-HP Energy Recovery Unit T r oubleshooting – Unit Symptom Possible Cause Corrective Action Motor over amps CFM too high. Check cfm and adjust drives if needed. Static pressur es are higher or lower than design. If higher , ductwork should be improved.
31 Model ERCH-HP Energy Recovery Unit Symptom Possible Cause Corrective Action Compressor will not run or does not try to start Open disconnect switch or circuit br eaker . Close switch and / or breaker . Compressor contactor not closing. Check voltage to contactor coil, transformer , slave relay , system.
32 Model ERCH-HP Energy Recovery Unit T r oubleshooting – Refrigeration Cir cuit Symptom Possible Cause Corrective Action Compressor starts but cuts out on high pressur e switch High pressur e activates at 600 PSIG for R410A Refrigerant overchar ge.
33 Model ERCH-HP Energy Recovery Unit T r oubleshooting – Refrigeration Cir cuit Symptom Possible Cause Corrective Action Compressor noisy or vibrating Refrigerant overchar ge. Check pressur es and subcooling. Liquid floodback. Check thermal expansion valve setting.
34 Model ERCH-HP Energy Recovery Unit T r oubleshooting – Refrigeration Cir cuit Symptom Possible Cause Corrective Action Low suction pressur e Refrigerant underchar ge. Check pressur es and subcooling. Blower running backward. Interchange any two wir es from 3 phase disconnect.
35 Model ERCH-HP Energy Recovery Unit T r oubleshooting – Refrigeration Cir cuit Symptom Possible Cause Corrective Action Low or no oil pressur e Low oil level (trapped oil in evaporator or suction line). Thoroughly defr ost evaporator . After defrost, observe level, add oil.
36 Model ERCH-HP Energy Recovery Unit This unit requir es minimal maintenance to operate properly . T o ensure proper operation and longevity , the following items should be completed. The items in this list assume a relatively clean air envir onment, and may requir e attention more fr equently in a dirty or dusty area.
37 Model ERCH-HP Energy Recovery Unit Belt Span Deflection = Belt Span 64 When replacing belts on multiple gr oove drives, all belts should be changed to provide uniform drive loading. Do not pry belts on or off the sheave. Loosen belt tension until belts can be removed by simply lifting the belts of f the sheaves.
38 Model ERCH-HP Energy Recovery Unit Internal Filter Maintenance The unit will typically be provided with 2-inch, pleated filters in the supply airstream. These filters should be checked per a routine maintenance schedule and replaced as necessary to ensur e proper airflow through the unit.
39 Model ERCH-HP Energy Recovery Unit Maintenance Log Date ___________________Time _____________ AM/PM Notes: ___________________________________________ ______________________________________________.
40 Greenheck warrants this equipment to be fr ee from defects in material and workmanship for a period of one year from the shipment date. The ener gy r ecovery wheel is warranted to be free fr om defects in material and workmanship for a period of five years from the shipment date.
An important point after buying a device Greenheck Fan 473501 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Greenheck Fan 473501 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Greenheck Fan 473501 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Greenheck Fan 473501 you will learn all the available features of the product, as well as information on its operation. The information that you get Greenheck Fan 473501 will certainly help you make a decision on the purchase.
If you already are a holder of Greenheck Fan 473501, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Greenheck Fan 473501.
However, one of the most important roles played by the user manual is to help in solving problems with Greenheck Fan 473501. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Greenheck Fan 473501 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
