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Model LG & LD Pool and Spa Heater
Page 1
SECTION 1.
General Information
1A. Introduction
This manual provides installation and operation
instructions for the Laars Lite 2, Model LG and LD
pool and spa heaters. Read these installation and
operation instructions completely before proceeding
Figure 1. General Configuration.
with the installation. Consult the Waterpik Laars
factory, or local factory representative, with any
questions regarding this equipment. Experience has
shown that most operating problems are caused by
improper installation.
The Laars Lite 2 heater is design certified by
International Approval Services (formerly American
Gas Association and Canadian Gas Association) as
complying with the latest edition of the Standard for
Notes:
1. In Canada, derate BTU/Hr input and output 10 percent for altitudes of 2,000 to 4,500 feet (609 to 1372 m) above sea
level. No derating necessary up to altitude of 2,000 feet (609 m). In United States derate input 4 percent for each 1,000
feet (305 m) above sea level, starting at 2,000 feet (609m).
2. The Laars Lite 2 is constructed for 75 psi working pressure.
3. Ratings shown are for both natural and propane gas.
Venting Dimensions
Model Heater U.S. Indoor or Firing Rate / Hr.
Size Width
Vent U.S. Outdoor
CAN Outdoor (1,000's)
Diameter Dim "H"
Shelter Dim "H"
in (cm) in (cm) in (cm) in (cm) BTU (kcal)
125 15 (38) 5 (12.7) 9 1/8 (23) 16 1/4 (41.3) 125 (31.5)
175 18 (45.7) 6 (15.2) 9 3/4 (24) 24 1/8 (61.3) 175 (44.1)
250 22 1/2 (57.2) 7 (17.8) 10 (26) 25 1/4 (64.1) 250 (63)
325 26 3/4 (67.9) 8 (20.3) 10 5/8 (27) 26 1/2 (67.3) 325 (81.9)
400 31 3/4 (80.6) 9 (22.9) 13 1/4 (34) 27 1/2 (69.9) 400 (101)
(920 cm)