This info pertains to installation and start-up of any spa control with heater, hot tub heaters, or spa heater elements:

ELEMENT INSTALLATION GUIDE
Before using this ... see full description.

417-2090 Spa Heater Tailpiece 1-1/2" Socket, 3.1" OD threads. 1.9" inside diameter socket for 1-1/2" pvc pipe

TWO (2) heater gaskets. Spa Heater Ridged Molded Gaskets 2 per pack. Heaters require 2 gaskets.

Spa Heater Tailpiece for industry standard 2" buttress thread x 2" Socket, 1 per pack

Heater Union Split Nut to connect hot tub heater to PVC tailpiece connectors. 1 per pack, 400-5161, 415-5161, 2" MBT, rpl1-20-208s

Pair (2) of 417-5050 Spa Heater Union Tailpieces 2" Socket

Spa Heating Element Universal Flow-Thru Hot Tub Heater Coil 12-0100-k .. see full description

Spa Heater Element for Flothru Spa Heaters 240v 5kw 9.9" 624502, B24050

Replacement for 12-0102, 624402, 4-Flo, 12-0102-k, and others. Spa Heater Element 4.0kw

Spa Heater Element in 4.0kW, 5.5kW, 5.0kW for Hot Tub Flo-Thru heaters.

623202 12-0106-k Spa Heater Element for Flothru Spa Heaters 230v 2.0 kw 9.8" overall length

623252 12-0105-k Spa Heater Element for Flothru Spa Heaters 230v 2.5 kw 624252

623302 12-0104-k Spa Heater Element for Flothru Spa Heaters 230v 3.0 kw 9.8" overall length Incoloy 800.. see full description

623200t 12-0106f-k Titanium Spa Heater Element for Flothru Spa Heaters 230v 2.0 kw fits M7

624402Ti Titanium Spa Heater Element for Flothru Spa Heaters 240v 4.0kw 9.9" 12-0102F-K

Fits all heater models M7, and for Acura Spa 347PM-5T, 25-4034-bi-ti, 12-0100f-k

12-0104F-k Titanium 3.0kw Spa Heater Element 623302T

623250T 12-0105F-k Titanium Spa Heater Element for Flothru Spa Heaters 230v 2.5 kw 9.9" length

Coated Spa Heater Element for Flothru Spa Heaters 240v 4.0kw 9.9" overall length COATED for extra corrosion resistance

Coated Spa Heater Element for Flothru Spa Heaters 240v 5kw 10.8" overall length includes installation instructions, 624502C, SPACOMP 05, SPACOMP05 .. see full description/SPAN>

623202C Coated Spa Heater Element for Flothru Spa Heaters 230v 2.0 kw 9.9" overall length

623252C Coated Spa Heater Element for Flothru Spa Heaters 230v 2.5 kw 624252C

12-0502-k Spa Heater Element for Flothru Spa Heaters

Coated Spa Heater Element for Flothru Spa Heaters 240v 5.5kw 9.9" overall length, 624552C, SPACOMP 06, SPACOMP06, 624559C see full description

623302C Coated Spa Heater Element for Flothru Spa Heaters 230v 3.0 kw 9.9" overall length Incoloy 800.. see full description