Ordering Information Model ZR22A Heater Assembly for ZR22G Length(1) -015 0.15 m Jig for change A With Jig(2) Reference gas(3) A Natural convention, External connection (Instrument air) Suffix code of length should be selected as same as ZR22G installed. Jig part no. is K9470BX to order as a parts after purchase. Select appropriately among “-A”, “-B”, “-C” according to the reference gas supply method and style.