This heater was only used on the 1998 Hot Spot RE, RLX, SE and SLX spa models. This heater is attached to the rear of the control box and is a flow through type heater. It's secured to the rear of the control box using two bolts and attached to the spa's plumbing using compression fittings at either end.

• This is for 1 Hot Spot Heater For 1998 Models (only)
• This heater was only used on the 1998 Hot Spot RE, RLX, SE and SLX spa models.

• Models	Serial # Range	Years
  RE (round)	Z-181001 to Z-489999	1998 only
  RLX (round)	ZQ-181001 to ZQ-489999	1998 only
  SE (square)	Y-181001 to Y-489999	1998 only
  SX (square)	YQ-181001 to YQ-489999	1998 only