Honeywell 101 Columbia Rd. Morristown, NJ 07962
9/17/2013 Rebecca von dem Hagen Stratospheric Protection Division Office ofAtmospheric Programs U.S. Environmental Protection Agency RE: 1233zd- Refrigeration Sector Dear Rebecca, 

### HoneY'Nell

In response to your, July 31 5t, 2013 email, regarding the 1233zd- Refrigeration Sector, I hereby confirm that Honeywell does not plan to use 1233zd(E) in consumer applications.


### 1233zd(E) Charging and Recovery Example Charging: System is leak checked priorto charging. Refrigerant is charged tothe previously evacuated system by connecting the outlet portofthe refrigerant (feed) cylinderto atransfer hose. The hose is connected to an Appion Twin GS recovery unitwhich has the abilityto pump liquid orvapor. The unit flow rate is adjusted so thatthe unit runs quietlywhile pumping liquid. Once the ORC system is charged, the ORC system is isolated by closingthe charging portvalve. Liquid in the transfer line is recovered. The attached charging guidance document describes and illustrates several ways to charge an ORC system. The document specifically mentions R-245fa but is applicable to 1233zd(E) as well.



### Recovery: An Appion Twin GS recovery unit is used to recover refrigerant from the system. This device can handle liquid and vapor recovery. A refrigerant transfer hose is connected from a low point in the system tothe inlet ofthe recovery unit. The outlet ofthe recovery unit is connected to a recovery cylinder using atransfer hose. The charge is recovered and the recovery unit is run tovacuum level before endingthe procedure. The Appion GS Twin Recovery Machine manual (embedded file) describes/illustrates recovery methods.

# BIITiiill .

OPERATION MANUAL**~..=.**
Engineering Controls: The ORC test rig is located in atest cell with aceiling height in excess ofasingle story. The ventilation exhaust is rated for 21,000 cubic feet per minute. The airflow atfloor level is significant and obvious (readily feel airflow). The ventilation system provides multiple air changes per hour. PPE: Refrigerant Vapor-in-air concentrations are well belowthe PEL. No respiratory protection is worn during charging or recovery. The only PPE worn are workgloves as needed. Other potential forexposure: System leak repair may put asystem operatorortechnician in awork space where there is airborne refrigerant. Ifthe leak is small such that airborne concentrations are low and repair is simply a matteroftightening afitting, the work may be conducted without interrupting system operation. Good practice dictatesthatfor asignificant leak orwhere a system component or piping must be replaced, the system be shut down and the affected piping section isolated, ifpossible. The charge is removed from the isolated section or, ifthe section cannot be isolated, the entire system charge is moved to the system receiver (ifso equipped) or is removed to a recovery cylinder. At that point, repairs can commence. Charging Quantitv: The total quantityofrefrigerant being charged and discharged, associated with the monitoring data, was 20-251bs. The mosttypical charge size would be 450 kg that is used in GE systems however, the range ofORC charge sizes can be anywhere from 10 kg that is used in long haul trucks, all the way to 75 tons used in geothermal ORC systems.
Sincerely,
Katarzyna Bober Product Stewardship Leader Honeywell