Laarsen Associates Lite 2 LG User Manual

Installation and Operation Data
FOR YOUR SAFETY - This product must be installed and serviced by a profes­sional service technician, qualified in pool heater installation. Improper installa­tion and/or operation could create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death. Improper installation and/or operation will void the warranty.
Installation and Operation Manual
Laars Lite 2
Pool and Spa Heater
Models LG and LD Natural Gas or LP Gas
NOTE: LD LP Gas For Outdoor Use Only
WARNING: If these instructions are not followed exactly, a fire or explosion
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.
H0235900-
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a nearby phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency, or the gas supplier.
TABLE OF CONTENTS
SECTION 1. General Information
1A. Introduction...................................................1
1B. Description ...................................................2
1C. Warranty....................................................... 2
1D. Technical Assistance....................................2
SECTION 2. Installation Instructions
2A. General Information ..................................... 2
2B. Field Assembly.............................................2
2C. Site Location ................................................ 3
2C-1. Installation Information ................................. 3
2C-2. Outdoor Installation ......................................4
2C-3. Flooring - Typical Installation ....................... 4
2C-4. Indoor and Outdoor Shelter Installation........ 4
2D. Combustion and Ventilation Air Supply........ 5
2E. Gas Supply and Piping.................................5
2E-1. General Instructions ..................................... 5
2E-2. Special Precautions for Propane Gas .......... 6
2F. Electrical Wiring ........................................... 6
2F-1. General Information (LD Only) ..................... 6
2F-2. Auxiliary Time Clock Wiring......................... 8
2F-3. Remote Operation (Model LD Only)............. 9
2G. Water Flow System ...................................... 9
2G-1. Flange Installation ........................................ 9
2G-2. Reversible Water Connections................... 10
2G-3. Valve Installation ........................................ 12
2G-4. Chlorinators, Ozone Generators, and
Sanitizing Chemicals..................................12
2G4a Water Chemistry ........................................ 13
2G-5. Pressure Relief Valve................................. 13
2G-6. Adjusting the Pressure Switch....................13
2G-7. Automatic Flow Control Valve....................14
2G-8. Temperature Rise....................................... 14
2G-9. Adjusting the Manual Bypass Valve ........... 15
SECTION 3. Operating Instructions
3A. General Information ................................... 16
3B. Lighting and Shutdown Procedures............ 16
3B-1. Model LD (Direct Ignition) .......................... 16
3B-2. Model LG (Standing Pilot) .......................... 16
3C. Setting the Temperature Control ................ 16
3D. Seasonal Care ............................................ 19
3D-1. Spring and Fall Operation .......................... 19
3D-2. Winterizing .................................................19
3D-3. Spring Startup ............................................ 19
3E. Water Chemistry ........................................ 20
3F. Spa/Hot Tub Safety Rules .......................... 20
3G. Swimming Pool Energy Saving Tips .......... 20
3H. Periodic Inspection ..................................... 21
3H-1. Owner Inspection........................................ 21
3H-2. Professional Inspection .............................. 21
SECTION 4. Parts List for Laars Lite 2 Heater
4A. General Information .................................. 21
4B. Parts List ................................................... 21
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
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
(920 cm)
Venting Dimensions
Model Heater U.S. Indoor or Firing Rate / Hr.
Size Width
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) 17 5 (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) 40 0 (101)
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.
Vent U.S. Outdoor
Diameter Dim "H"
CAN Outdoor (1,000's)
Shelter Dim "H"
Figure 1. General Configuration.
Page 2
WATERPIK TECHNOLOGIES INC.
Gas-Fired Pool Heaters, ANSI Z21.56, and in Canada with CAN1-4.7-M85.
Certain sections of this manual are specific to either United States or Canadian installations, and are labeled as such.
1B. Description
The Laars Lite 2 LD heater gets electrical power from an external 120VAC or 240VAC source and provides a dual thermostat Flex-Temp control system for pool/spa combinations or preheat convenience. The Laars Lite 2 LD heater also meets the California, New York, Hawaii, and Oregon state energy requirements for intermittent ignition gas appliances. The Laars Lite 2 LG heater is a self contained standing pilot unit and requires no external power.
The Laars Lite 2 heater is specifically designed for heating swimming pools and spas. Do not use it as a general service water heater. There is a specially designed model of Laars Lite 2 for heating salt water pools. Consult your dealer for the appropriate Waterpik Laars products for these applications.
1C. Warranty
The Laars Lite 2 heater is sold with a limited factory warranty. Details are specified on the back cover of this manual. A copy of the warranty and a warranty registration card are included in the plastic bag shipped with the heater. Fill out and return the warranty registration card.
Make all warranty claims to an authorized Waterpik Laars representative or directly to the factory. Claims must include the heater serial number and model (this information can be found on the rating plate), installation date, and name of the installer. Shipping costs are not included in the warranty cover­age.
Damage caused by improper installation or assembly, or to the heat exchanger by corrosive water, is NOT covered by the Warranty. See Section 3D for maintaining proper pool water chemistry.
NOTE: Keep this manual in a safe place for
future reference when inspecting or servicing the heater.
1D. Technical Assistance
Consult Waterpik Laars or your local distributor with any questions or problems involving the specifica­tions, installation, and operation of your Waterpik Laars equipment. An experienced technical support staff is ready to assist in assuring the proper perfor­mance and application of Waterpik Laars products. For technical support call (415) 382-8220 extension
260.
SECTION 2. Installation Instructions
2A. General Information
Install the Laars Lite 2 heaters, vent caps and drafthoods in accordance with the procedures in this manual, local codes and ordinances, and in accordance with the latest edition of the National Fuel Gas Code, ANSI Z223.1. In Canada, the installation must be in accordance with CAN1-B149.1 or .2 and local codes. The authority having jurisdiction may require that the installation conform to the Standard for Gas-Fired Heaters, ANSI Z21.56. Any changes to the heater, gas controls, gas orifices, wiring, draft diverter, or im­proper installation may void the warranty. If field conditions require change to any of the above, consult the factory.
All gas-fired products require correct installation to assure safe operation. The requirements for pool heaters include the following:
1. Field assembly (if required)
2. Appropriate site location (clearances) and flooring
3. Sufficient combustion and ventilation air
4. Properly sized gas meter and piping
5. Proper electrical wiring (if required)
6. Adequate water flow
This manual provides the information needed to meet these requirements. Review all application and installation procedures completely before continuing the installation.
2B. Field Assembly
The Laars Lite 2 heater is shipped from the factory with the top assembly in the low-profile configuration for outdoor installation in the U.S. In Canada, an outdoor installation requires the addition of a factory approved vent cap. The Laars Lite 2 heater is design certified for indoor installation when equipped with a drafthood, which must be installed without modification.
The Laars Lite 2 heater is also certified for installation in an outdoor shelter in Canada when equipped with a drafthood. An outdoor shelter is an enclosure not normally occupied which does not communicate directly with occupied areas.
Check the rating plate on the heater or the Parts List (Sec. 4) of this manual for the correct Waterpik Laars drafthood or vent cap part number. See instruc­tions supplied with the drafthood or vent cap for installation and attachment. When the drafthood is used, locate the heater so as to be in the same atmo­spheric pressure zone as the combustion air inlet to the heater.
Model LG & LD Pool and Spa Heater
g
Notes:
1. An Underwriters' Laboratories listed vent cap is required to prevent downdraft and allow the heater to function properly and safely.
2. Use approved roof jack.
Page 3
Figure 2. Indoor Installation Venting (USA), or Outdoor Shelter (Canada).
Table 1. Air Openings to Outside.
Required Net Free Open Area for Combustion Air Openings
Direct from outside Duct from outside
Model in
125 32 (206) 64 (413) 175 44 (284) 88 (568) 250 63 (406) 126 (813) 325 82 (429) 164 (1058) 400 100 (645) 200 (1290)
Note: If using screens and/or louvers, compensate by adding 50% additional area to each opening.
2
(cm2)in2(cm2)
2C. Site Location
Improper installation or maintenance can
cause nausea or asphyxiation from carbon
monoxide in flue gases which could result in
2C-1. Installation Information
Avoid placing the heater in locations where it can
cause damage by water or condensate leakage. If this is
When a drafthood is used, it must be connected to a vent pipe which stops at least 2 feet (0.61 meters [m]) above the highest point of the roof or other object that is within 10 feet (3.05 m) from the vent termina­tion. The vent pipe must have a listed vent cap which
not possible, provide a suitable drain pan to catch and divert any leakage. The pan must not block natural flow of air around the heater.
Locate the heater so the clearances from combus-
tible surfaces shown in Table 2 are met. allows a full equivalent opening for flue products (see Figure 2).
Table 2. Minimum Heater Clearances From Combustible Surfaces
Indoor (Outdoor Shelter) Installation Outdoors Installation
WARNING
severe injury, or death.
U.S. Canada U.S. Canada
Side of Heater
Blank 6 15.2 6 15.2 6 32 6 15.2 Rear 6 15.2 6 15.2 6 32 6 15.2 Pipin Top 44 111.7 44 111.7 Open Unroofed Area Front 18 45.7 36 91.4 18 45.7 36 91.4
inch cm inch cm inch cm inch cm
12 30.5 18 45.7 12 30.5 18 45.7
( ) () () ()
()
()
() () () ()
()
()
( ) () ()
()
()
( ) () () ()
()
Page 4
WATERPIK TECHNOLOGIES INC.
2C-2. Outdoor Installation
Laars Lite 2 heaters can be installed in the low­profile, grate top configuration (U.S.A. only) as received from the factory, or with an optional high wind vent cap/stack. Canadian units require a factory approved vent cap.
Figure 3. Outdoor Heater Installation.
Locate the heater in an open, unroofed area. Do not install the heater under a deck. Do not locate the heater below or adjacent to any doors, glass openings, louvers, grills, etc., which connect in any way with an inhabited area of a building, even though the access might be through another structure (e.g., a garage or utility room. In the United States there must be a minimum of 4 feet (1.22 m) horizontally or vertically between the heater and any door, glass opening, or gravity inlet to a building. In Canada this distance must be at least 10 feet (3.0 m) (see Figure 3).
feet (0.91 m) from vertical surfaces (e.g., nearby buildings and walls). The addition of a vent cap may be necessary.
2C-3. Flooring - Typical Installation
Do not install the heater directly on a combus-
tible wood or carpet floor without placing a noncom­bustible platform between the floor and the heater. In the United States, the National Fuel Gas Code allows a heater to be placed on a combustible surface when there is a platform under the heater made of hollow masonry no less than 4 inches (102 millimeters [mm])
WARNING
United States
Do not install the heater with the top of the vent assembly within 4 feet (1.22 m) of any opening into a building.
Canada
Do not install the heater with the top of the vent assembly within 10 feet (3.05 m) of any opening into a building.
If the heater is installed under an overhang, there must be a minimum clearance of 5 feet (1.5 m) above the top of the heater and the structure should not overhang the heater more than 12 inches (0.30m). The area under the overhang must be open on three sides. This prevents combustion gases from being diverted into living areas through doors, windows, or gravity inlets.
If the heater is installed close to a structure, protect it from rain water runoff with rain gutters on the roof or other measures. Do not locate the heater near sprinkler systems that could spray water on it.
Avoid locations where wind deflection off nearby structures might cause downdraft conditions. Where downdraft conditions exist, locate the heater at least 3
Notes:
1. Blocks must provide solid base and be braced so they cannot slip out of place.
2. Air openings in blocks must be arranged to provide unrestricted opening through entire width or length of base.
Figure 4. Non-Combustible Platform.
thick, covered with sheet metal at least 24 gauge thick and extending beyond the full width and depth of the heater by at least 6 inches (76.2 mm) in all directions. The masonry must be laid with ends unsealed, and joints matched to provide free circulation of air from side to side through the masonry (see Figure 4). If the heater is installed in a carpeted alcove, the entire floor of the alcove must be covered by a noncombustible panel. You can obtain a noncombustible base from Waterpik Laars, see the Parts List (Sec. 4) of this manual.
2C-4. Indoor and Outdoor Shelter
Installations
All indoor installations and outdoor shelter installations (Canada) require the addition of a factory approved drafthood. The drafthood must be installed
Model LG & LD Pool and Spa Heater
without modification and in accordance with all local, state, provincial and national codes.
Proper ventilation of exhaust and combustion air
are essential for the safe operation of the heater.
2D. Combustion and Ventilation Air
Supply
All indoor installations must have openings to outside air for combustion, ventilation, and dilution of flue gases from inside the building (see Figure 2 and Table 1). Waterpik Laars does not recommend indoor installations that do not provide combustion air from outside the building.
All outdoor shelter installations (Canada only) must have uninterrupted openings to outside air for combustion and ventilation. The installation must be in accordance with the latest edition of CAN/CGA B149. Waterpik Laars does not recommend outdoor shelter installations that depend on internal air for combustion. Combustion air should be ducted to the heater from outside the structure.
If the heater is installed in a residential garage, or where flammable vapors will be present, the burners must be 18 inches (457 mm) above the garage floor. Refer to the latest edition of the National Fuel Gas Code for more information. In Canada, refer to the latest edition of the Gas Installation Code, CAN/CGA B149.
2E. Gas Supply and Piping
2E-1. General Instructions
Review the following general instructions before continuing the installation.
WARNING
Do not convert this heater from natural gas to
propane gas, or propane to natural. Field
conversion could create carbon monoxide gas
which can cause property damage, serious
injury, or death.
1. Gas piping installation must be in accordance
with the latest edition of ANSI Z223.1 and all
local codes. In Canada, the installation must be in
accordance with CAN- B149.1 or .2 and all local
codes that apply.
2. Check the rating plate to make sure the heater is
fitted for the type of gas being used. Waterpik
Laars heaters, as shipped from the factory, are
certified to operate at an altitude of 0 to 3000 feet
(0 to 915 m) for natural gas and 0 to 5000 feet (0
to 1525 m) for propane gas in the United States.
Or if so ordered, at higher altitudes. For higher
altitudes, the heater manifold is marked with a
tag or sticker indicating one of the following high
altitude operation codes:
Page 5
Manual Shutoff
Valve
Gas Supply
Inlet
T-Fitting
3" Min.
(76 mm)
Cap
Figure 5. The proper design for a sediment trap / drip leg.
Nipple
Union
To
Equipment
Inlet
a. High altitude (H) - 3,000 to 6,000 feet (915 to
1,830 m) for natural gas and 5000 to 10,000 feet (1525 to 3050 m ) for propane gas.
b. High altitude (J) - 6,000 to 10,000 feet (1830
to 3,050 m)
3. In Canada, the heater rating plate is marked for specific altitude requirements: lo altitude is 0 to 2,000 feet (0 to 610 m) and high altitude (H) is 2,000 to 4,500 feet (610 to 1,370 m) above sea level for natural gas and 0 to 4500 feet (0 to 1370 m) for propane gas.
4. Use the figures in Table 3 to size the gas inlet piping from the gas meter to the heater. Check all local codes for compliance before installing the heater.
Table 3. Natural Gas Pipe Size Requirements
Distance from Gas Meter
0-50 feet 50-100 feet 100-200 feet
Heater (0-15 m) (15-30 m) (30-60 m)
Size in. (mm) in. (mm) in. (mm)
125 3/4 (19) 1 (25.4) 1 (25.4) 175 1 (25.4) 1 (25.4) 1-1/4 (31.75) 250 1 (25.4) 1-1/4 (31.75) 1-1/4 (31.75) 325 1-1/4(31.75) 1-1/4 (31.75) 1-1/2 (38) 400 1-1/4(31.75) 1-1/2 (38) 1-1/2 (38)
Notes:
1. These numbers are for natural gas (0.65 Sp. Gr.) and are
based on 1/2 inch (13 mm) water column pressure drop. Check supply pressure with a manometer, and local code requirements for variations. For liquefied petroleum gas, reduce pipe diameter one size, but maintain a 3/4 inch (13 mm) minimum diameter.
2. Check supply pressure and local code requirements
before proceeding with work.
3. Pipe fittings must be considered when determining gas
pipe sizing.
Page 6
WATERPIK TECHNOLOGIES INC.
Table 4. Gas Supply Pressure Requirements
Supply Pressure Natural Gas Propane Gas Water Column in. (mm) in. (mm)
Minimum 5.5 (140) 10.0 (254) Maximum 10.0 (254) 14.0 (356)
5. Install a sediment trap (drip leg) ahead of the gas controls (see Figure 5). Fit the trap with a threaded cap which can be removed for cleaning.
6. Install a manual gas shutoff valve for service and safety. Do not use a restrictive gas cock. DO NOT USE FLEXIBLE GAS PIPING.
7. Disconnect the heater and its individual shutoff valve from the gas supply system during pressure testing of the system at pressures higher than 1/2 pounds per square inch (psi) (3.45 kilopascals [kPa]). If the test pressure is equal to or less than 1/2 psi (3.45 kPa), close the manual shutoff valve on the heater during the piping pressure test.
Caution
Permanent damage to the gas valve will occur
if the following procedures are not followed.
8. If the gas supply pressure is less than required, check for undersized pipe between the meter and the heater, a restrictive fitting, or an undersized gas meter. Gas supply pressures to the heater are listed in Table 4.
NOTE: The maximum inlet gas pressure must
not exceed the specified value. The minimum value listed is for the purpose of input adjustment. Refer to Table 4.
9. Before operating the heater, test the complete gas supply system and all connections for leaks using a soap solution. Do not use an open flame.
2F. Electrical Wiring
Caution
Label all wires prior to disconnection when servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after servicing.
Attention
Au moment de l'entretien des commandes,
étiquetez tous les fils avant de les débrancher.
Des erreurs de câblage peuvent entraîner un
fonctionnement inadéquat et dangereux.
2F-1. General Information (LD Only)
Wiring connections must be made exactly as shown in the wiring diagram found on the inside of the heater (see Figures 6 and 7 for typical examples) . The heater must include a definite means of grounding. There is a bonding lug on the right side of the heater, where a bond wire must be attached.
The heater comes factory-wired intended for use with 240 Volt, 60 Hz AC field electrical supply. To use 120 Volt, 60 Hz AC requires rewiring of the heater. This should be done by a certified electrician
only, as with all wiring. To wire the heater for 120 Volt, 60 Hz AC, follow the alternate 120V wiring method depicted in Figure 6. Additionally, the ignition control module must be rewired. The wire from the terminal marked IGN/240 must be removed from that terminal and placed on the terminal marked IGN/120.
Electrical wiring must be in accordance with the latest edition of the National Electric Code (NEC), ANSI/National Fire Protection Association (NFPA) 70, unless local code requirements indicate otherwise.
To wire the Laars Lite 2 model LD heater to a
120V or 240V /60 Hertz (Hz) electrical source:
1. Remove the screw located to the lower right side
of the transformer and open the hinged cover of
the wiring enclosure.
Caution
Some leak test solutions (including soap and
water) may cause corrosion or stress cracking.
Rinse the piping with water after testing.
2E-2. Special Precautions for Propane
Gas
Liquefied petroleum (LP) gas is heavier than air. Therefore, do not install pool heaters using LP gas in pits or locations where gas might collect. Locate heaters a safe distance from LP gas storage and filling equipment. Consult local codes and fire protection authorities about specific installation restrictions.
2. Connect the wires from the power source to the leads on the right side of the heater in the space behind the ignition control (see Figure 8). Be sure to follow the wiring diagram on page 7 to config­ure the transformer for the correct input voltage.
3. Attach the ground wire to the green ground screw located on the back panel of the wiring enclosure.
4. Close the cover of the wiring enclosure and replace the screw to hold it in place.
5. Connect a bonding wire (8 ga copper) to the bonding lug on the right side of the heater.
NOTE: No external junction box is required.
Model LG & LD Pool and Spa Heater
MODEL LD WIRING DIAGRAM
OFF
SPA
POOL
REMOTE
CONNECTOR
BK
WWW W
WATER
TEMP
SENSOR
PRES SURE
SWITCH
Y/BK
HONEYWELL
GAS VALVE
MV1
MV2
Y
a) Connection Diagram
L1
LIMIT
HSI IGNITION WIRE FACTORY WIRED - 120 V/240 V FIELD WIRED - 120V /240V FACTORY WIRED - 24 V
LIMIT
BR
Y
FIREM AN
SWITCH
CONNECTION
W
W W
W
IF ORIGIN AL WIRE SU PP L I ED W ITH HE ATE R MUST BE REPLACED, APPLIANCE W IRING MATERIAL RATED AT 105 C SH ALL B E USE D. WIRIN G SH OWN A S S HALL U SE APPLIANCE W IRING MATERIAL RATED AT 200 C.
FUSIBLE
LINK
FLAME SE N SE R O D
IGN /120 IGN /240 (LI) (L2) IGN
FS TH VALVE
GND
IGN ITE R
ELEC.
FUSE
NOTE:
TRANSFORMER
120-240 V
R
G/Y
Y
WIRE TO IGN /1 2 0 FOR 120 VOLTS
WIRE TO IGN /2 4 0 FOR 240 VOLTS
BK W/R
W/BK
R
IGNITION CONTROL (FE NWA L ) 0533
TRANSFO RMER
120-240V / 24 V
(L1) (L2)
ONLY 12 0 V
240V CONNECTION
SHOWN
60 HZ
O
G
G
BK
R
ALTERNATE 120 V WIRING
BK W/R W/BK R
BK
L2
G
R
BK
240V 60 H z SINGLE
R
PHASE
ATT ACH GROUND WIRE HERE
BK
R
AT TACH GROUND WIRE HERE
Page 7
O
TH
PRESSURE
SW ITCH
BK
BK/Y
W
FS
W
O
150 F HI-LIMIT SWITCH
SPA SET POINT
VA LVE
BR
O
135 F HI-LIMIT SWITCH
FIREMAN
SW ITCH
CONNECTOR
POOL SET POINT
OFF
CIRCUIT
SEN
WATER TEMPERATURE
SENSO R
L2 IGN
H/W G AS VALVE
MV1 MV2
FUSIBLE
LINK
SEN
L1 IGN 120
W
Y
R
ELECTR ICAL
FUSE
1-25 AM P
W
or
IGN 2 4 0
IGN IT O R
FLAME SENSO R
TRANSFO RMER
24 V
GND
Y
GND
W
IGN IT IO N CONTROL
Black
BK -
White
W-
Brown
BR -
Yello w
Y-
Red
R-
Orange
O-
Yellow & Black
Y/BK -
Wh ite & Black
W/BK -
White & Red
W/R -
Green & Yellow
G/Y -
b) Schematic Diagram
Figure 6. LD Connection/Schematic Wiring Diagram.
H0236300-
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