Manuale d’uso / di manutenzione del prodotto VSU del fabbricante Greenheck Fan
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1 Model VSU Make-Up Air 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 VSU Make-Up Air ® ® ® ® ® Inspection and Maintenance during Storage While in storage, inspect fans once per month. Keep a recor d of inspection and maintenance performed. If moisture or dirt accumulations ar e found on parts, the source should be located and eliminated.
3 Model VSU Make-Up Air ® ® ® ® ® T able of Contents Installation Filter/Stand Section . . . . . . . . . . . . . . . . . . . . . . 3-4 Burner/Blower Section ..................... 4 Ductwork ................................ 4 D i m e n s i o n a l D a t a .
4 Model VSU Make-Up Air ® ® ® ® ® 2. Burner/Blower Section Use a crane and a spreader bar hooked to the factory lifting lugs (shown below) to lift and center the unit onto the filter stand section. The sections can be caulked together , but it is not needed with the water kickouts provided with this section.
5 Model VSU Make-Up Air ® ® ® ® ® Unit Dimensional Data Blower Dimensional Data Unit W eight Housing Size A B C E Filters Blower Size F H J K Blower/Heater* Stand/Filter 40 111 54 95 144 (20) 20x25 220 26 20 68 12 2000 lbs. 700 lbs. All dimensions are shown in inches.
6 Model VSU Make-Up Air ® ® ® ® ® Installation of Dir ect Gas Piping IMPORT ANT All gas piping must be installed in accordance with the latest edition of the National Fuel Gas Code ANSI/Z223.
7 Model VSU Make-Up Air ® ® ® ® ® V ent Line Solenoid T o Burner V ent Line T o Outdoors From Supply Safety Shut-off V alves Optional V ent Line W ARNING NEVER test for a gas leak with an open flame. NOTE The factory piping has been checked for leaks, but should be rechecked due to shipping and installation.
8 Model VSU Make-Up Air ® ® ® ® ® Start-Up - Blower 1. Check the V oltage Before starting the unit, compar e the supplied voltage, hertz, and phase with the unit and motor’ s nameplate information. 2. Check the Blower Rotation Open the blower access door and run the blower momentarily to determine the rotation.
9 Model VSU Make-Up Air ® ® ® ® ® 6. Set-up Optional Components Adjust the settings on the optional components. See the Control Center Layout in the Refer ence section for location of optional components.
10 Model VSU Make-Up Air ® ® ® ® ® 1. Check the Supply Gas Pressur e Check the supply gas pressur e and compare it with the unit’ s nameplate pressur e requir ements. Adjust the supply regulator as needed until the supply gas pressur e is within the specified range.
11 Model VSU Make-Up Air ® ® ® ® ® 4. Set the Maximum Firing Rate Monitor the unit’ s actual temperature rise by placing a thermocouple in the unit’ s inlet and a second in the discharge, three duct diameters downstr eam of the burner .
12 Model VSU Make-Up Air ® ® ® ® ® 6. Set the Unit’s Operating Temperature Set the operating temperature. The operating temperature setting depends on which Maxitr ol controller is used. IMPORT ANT If the flame signal is not above 1.25 VDC and steady, consult the troubleshooting section.
13 Model VSU Make-Up Air ® ® ® ® ® Direct Gas Burner Sequence 1. Supply Fan Contact Closed • Power passes to the supply fan and heat switch 2. Heat Contact Closed • Power passes to the heat relay then to the Flame Safeguard 3.
14 Model VSU Make-Up Air ® ® ® ® ® 115 V AC between terminals 102 and 101? Check Main V oltage (See Blower Start-Up Step #1) Main Disconnect (DS1) Off (T urn Main Disconnect DS1 On) Primary Fuses.
15 Model VSU Make-Up Air ® ® ® ® ® Heater Does Not Operate Does not attempt to light (No visible spark) T r oubleshooting 24 V AC between terminals W1 and X? Heat Switch (S4) Off (T urn Heat Swit.
16 Model VSU Make-Up Air ® ® ® ® ® Heater Does Not Operate Attempts to light, but no pilot (visible spark) T r oubleshooting Gas pressur e between the minimum and maximum shown on the direct gas label? Check inlet gas pressur e.
17 Model VSU Make-Up Air ® ® ® ® ® Heater Does Not Operate Visible pilot T r oubleshooting Flame signal greater than 1.25 VDC Measure the flame signal when there is a visible pilot Pressur e drop acr oss the burner between 0.
18 Model VSU Make-Up Air ® ® ® ® ® Maintenance - Routine CAUTION Lock-out the gas and the electrical power to the unit before performing any maintenance or service operations to this unit. V-Belt Drives V -belt drives must be checked on a regular basis for wear , tension, alignment, and dirt accumulation.
19 Model VSU Make-Up Air ® ® ® ® ® Bearings The bearings for Greenheck fans ar e carefully selected to match the maximum load and operating conditions of the specific class, arrangement and fan size. The instructions provided in this manual and those pr ovided by the bearing manufacturer will minimize any bearing problems.
20 Model VSU Make-Up Air ® ® ® ® ® Typical Control Center Layout Refer ence 1. Spark Generator 2. T emperature Selector 3. Amplifier 4. 24V T ransformer 5. 120V T ransformer 6. T ransformer Fuses 7. Motor Fuses 8. Heating Inlet Air Switch 9. Flame Safeguard 10.
21 Model VSU Make-Up Air ® ® ® ® ® Start-Up Checklist Unit Model Number _______________________________ (e.g. VSU-220-H40-UB) Unit Serial Number _______________________________ (e.
22 Model VSU Make-Up Air ® ® ® ® ® Maintenance Log Date __________________ Time _____________ AM/PM Notes:___________________________________________ _____________________________________________.
23 Model VSU Make-Up Air ® ® ® ® ® Maintenance Log Date __________________ Time _____________ AM/PM Notes:___________________________________________ _____________________________________________.
24 457831 • Model VSU IOM, Rev . 3, Mar ch 2009 Copyright 2009 © Greenheck Fan Corporation Greenheck warrants this equipment to be fr ee from defects in material and workmanship for a period of one year fr om the shipment date.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Greenheck Fan VSU è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Greenheck Fan VSU - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Greenheck Fan VSU imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Greenheck Fan VSU ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Greenheck Fan VSU, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Greenheck Fan VSU.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Greenheck Fan VSU. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Greenheck Fan VSU insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
