Anemostat EZT - Manual (Page 9)

1220 Watson Center Road • Carson, CA 90745
Tel: (310) 835-7500 • Fax: (310) 835-0448
www.anemostat.com • [email protected]
9
Electrical Connections
NOTE: This manual was written with the understanding that the line power and control wiring drawings submitted for
the specific project have been acquired and are available during installation.
• Electrical wiring, connections, fusing and installation must conform to the local building codes and the NATIONAL
ELECTRIC CODE (ANSI / NFPA 70).
• Connect the electronically actuated EZT per wiring diagram supplied with the unit.
• Field installed electrical components must be mounted and wired per factory supplied wiring diagram. Factory wiring
must not be altered without written approval from ANEMOSTAT; violation of this will void warranty.
• UL standards dictate that the power source must be within 10% of nameplate voltage, for safety and longevity. If
incoming voltage is 10% above or below nameplate voltage, contact Power Company to correct before operating
terminal.
For EZTE units provided with an integral electric heating coil: note these additional instructions:
• Connect the EZTE as shown on the heater wiring schematic diagram, found inside the heater wiring enclosure, and
also per interlocking VAV controls where applicable.
• The minimum airflow allowed is 70 CFM per KW of electric heat.
• The airflow proving switch requires a minimum of 0.07” w.c. total air pressure at the inlet of the electric coil. The
electric heater will not energize if the air switch contacts do not close.
• 480 volt/ 3 phase coils may incorporate “wye” or other unbalanced configuration for multiple steps.
• The installing electrician should rotate heater steps by phase for improved balance of the building electrical load.
Start-up Procedures
WARNING: Failure to adhere to these instructions, unauthorized installation, adjustment, alterations, modifications or
maintenance can void the manufacturer’s warranty, cause property damage, personal injury or death. For assistance or
additional information, consult a qualified contractor or an ANEMOSTAT representative.
• Verify all electrical wire terminations are tightened prior to energizing terminal. Some loosening may have occurred
during shipment and installation.
• Verify the minimum airflow of at least 70 CFM per KW will always be maintained during operation.
• Verify a minimum of 0.07” w.c. total air pressure at the inlet of the electric coil for proper operation of the airflow
proving switch.
• Prior to start-up, the project specific control sequence / wiring diagram should be read and understood. A copy of
this schematic is located on the interior of the electrical enclosure. If factory supplied analog or DDC controls are
supplied, contact the project control contractor for specific start-up and balancing information.
Maintenance
• The EZT VAV terminal unit has been designed and constructed for years of reliable use.
• If installed, inspect hot water coil periodically and clean fins via the access panel upstream of the water coil.
Components should be replaced with ANEMOSTAT authorized parts to avoid conflict with ETL listing.
Factory Mounted DDC Controls
Anemostat will factory mount DDC controls of all types. Refer to the wiring diagrams provided by the temperature
control manufacturer for proper wiring of these controls. The maximum and minimum CFM range is determined by the
controls.