Model LD Pool and Spa Heater Page 5Figure 1. General Configuration.* Ratings shown are for both natural and propane gas.Venting DimensionsModel Heater U.S. Indoor or Firing Rate / Hr.*Width Vent Outdoor CAN Outdoor (1,000's)Diameter Dim "H" Shelter Dim "H"in (cm) in (cm) in (cm) in (cm) BTU (kcal)LD125 15 (38) 5 (13) 17 3/8 (44) 16 1/4 (41) 125 (32)LD175 18 (46) 6 (15) 18 (46) 24 1/8 (61) 175 (44)LD250 22 1/2 (57) 7 (18) 18 1/4 (47) 25 1/4 (64) 250 (63)LD325 26 3/4 (68) 8 (20) 18 7/8 (48) 26 1/2 (67) 325 (82)LD400 31 3/4 (81) 9 (23) 21 1/2 (55) 27 1/2 (70) 400 (101)2.3 Location Requirements2.3.1 IntroductionCAUTIONWhen pool equipment is located below the poolsurface, a leak from any component can cause largescale water loss or flooding. Jandy Pool Products,Inc. cannot be responsible for such water loss orflooding or resulting damage.ATTENTIONLorsque l’équipement d’une piscine est situé sous lasurface de l’eau, une fuite provenant de n’importequel élément peut causer une perte d’eau importanteou une inondation. Jandy Pool Products, Inc. n’estpas responsable des pertes d’eau, des inondationsou des avaries causées par une installation ou unentretien inadéquat.The Jandy Lite2 LD heater may be installedindoors or outdoors as outlined in later sections.Location of the heater below or above the pool waterlevel affects operation of its water pressure switch.See sections on water piping and heater start-up formore information about this.