Teledyne LLD Manuale utente

Model LLG & LLD Pool and Spa Heater Page 1

SECTION 1.

General Information

1A. Introduction

This manual provides installation and operation

instructions for the Laars Lite, Model LLG and LLD

pool and spa heaters. Read these installation and

Figure 1. General Configuration.

operationinstructionscompletelybeforeproceeding

with the installation. Consult the Teledyne Laars

factory, or local factory representative, with any

questionsregardingthisequipment.Experiencehas

shown that most operating problems are caused by

improperinstallation.

The Laars Lite heater is design certified by

InternationalApprovalServices (formerly American

Notes:

1. InCanada,derateBTU/Hrinputandoutput10percent foraltitudesof 2,000to4,500feet(609to1372m)abovesealevel.

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 is constructed for 75 psi working pressure.

3. Ratings shown are for both natural and propane gas.

VentingDimensions

Model Heater U.S.Indooror Firing Rate /Hr.

Size Width Vent U.S.Outdoor CANOutdoor (1,000's)

Diameter Dim "H" ShelterDim"H"

in (cm) in (cm) in (cm) in (cm) BTU (kcal)

125 15 (38) 5 (12.7) 9 1/8 (23) 161/4 (41.3) 125 (31.5)

175 18 (45.7) 6 (15.2) 9 3/4 (24) 241/8 (61.3) 175 (44.1)

250 221/2 (57.2) 7 (17.8) 10 (26) 251/4 (64.1) 250 (63)

325 263/4 (67.9) 8 (20.3) 105/8 (27) 26 1/2 (67.3) 325 (81.9)

400 313/4 (80.6) 9 (22.9) 131/4 (34) 27 1/2 (69.9) 400 (101)

Page 2

Gas Association and Canadian Gas Association) as

complying with the latest edition of the Standard for

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 LLD heater gets electrical power

from an external 120V / 240V (volt AC) source and

provides a dual thermostat Flex-Temp control system

forpool/spa combinations or pre-heat convenience.

The Laars Lite LLD heater also meets the California,

New York, Hawaii, and Oregon state energy require-

ments for intermittent ignition gas appliances. The

Laars Lite LLG heater is a self contained standing

pilot unit and requires no external power.

The Laars Lite heater is specifically designed for

heating swimming pools and spas. Do not use it as a

general service water heater or for heating salt water

pools. Consult your dealer for the appropriate Tele-

dyne Laars products for these applications.

1C. Warranty

The Laars Lite 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

Teledyne Laars representative or directly to the fac-

tory. 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 cover-

age. 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 Teledyne Laars or your local distributor

with any questions or problems involving the specifica-

tions, installation, and operation of your Teledyne

Laars equipment. An experienced technical support

staff is ready to assist in assuring the proper perfor-

mance and application of Teledyne Laars products.

SECTION 2.

InstallationInstructions

2A. General Information

Install the Laars Lite heaters in accordance with

the procedures in this manual, local codes and ordi-

nances, 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 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 war-

ranty. 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

heatersincludethefollowing:

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

installationprocedurescompletelybeforecontinuing

theinstallation.

2B. Field Assembly

The Laars Lite heater is shipped from the factory

with the top assembly in the low-profile configuration

for outdoor installation in the U.S. The Laars Lite

heater is design certified for indoor installation when

equipped with a drafthood, which must be installed

withoutmodification.

The Laars Lite heater is also certified for installa-

tion in an outdoor shelter in Canada when equipped

with a drafthood. An outdoor shelter is an enclosure

notnormallyoccupiedwhichdoes not communicate

directly with occupied areas.

Check the rating plate on the heater for the

correct Teledyne Laars part number. See instructions

supplied with the drafthood for installation and attach-

ment. When the draft hood is used, locate the heater so

as to be in the same atmospheric pressure zone as the

combustion air inlet to the heater.

If 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 allows

a full equivalent opening for flue products (see Figure

2).

Model LLG & LLD Pool and Spa Heater Page 3

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.

2C. Site Location

WARNING

Improper installation or maintenance can

cause nausea or asphyxiation from carbon

monoxide in flue gases which could result in

severe injury, or death.

2C-1. InstallationInformation

Avoid placing the heater in locations where it can

cause damage by water or condensate leakage. If this is

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.

2C-2. Outdoor Installation

Laars Lite heaters can be installed in the low-

profile, 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.

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

Table 2. Minimum Heater Clearances From Combustible Surfaces

Figure 2. Indoor Installation Venting (USA), or Outdoor Shelter (Canada).

Table 1. Air Openings to Outside

Side of Heater

Indoor (Outdoor Shelter) Installation Outdoors Installation

U.S. Canada U.S. Canada

inch cm inch cm inch cm inch cm

Blank 615.2 615.2 632 615.2

Rear 615.2 615.2 632 615.2

Piping 12 30.5 18 45.7 12 30.5 18 45.7

Top 44 111.7 44 111.7 Open Unroofed Area

Front 18 45.7 36 91.4 18 45.7 36 91.4

( )

()

( )

()

( )

()

RequiredNetFreeOpenArea

forCombustionAirOpenings

Directfromoutside Ductfromoutside

Model in2(cm2)in

2(cm2)

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.

ROOF JACK

Page 4

Figure 4. Non-Combustible Platform.

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 3. Outdoor Heater Installation.

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 (see Figure 3).

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.

Avoidlocationswherewinddeflectionoffnearby

structures might cause wind loading and downdraft

conditions.Wheredowndraftconditionsexist,locate

the heater at least 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 non-

combustible 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]) 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 direc-

tions. 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 non-combus-

tible panel. You can obtain a non-combustible base

from Teledyne Laars, part number 10521701-05.

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). Teledyne Laars does not recommend indoor

installations that do not provide combustion air from

outsidethebuilding.

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.

Teledyne Laars does not recommend outdoor shelter

installations that depend on combustion air for com-

bustion.

If the heater is installed in a residential garage, or

where flammable vapors will be present, the

Model LLG & LLD Pool and Spa Heater Page 5

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 GAS FLEXIBLE 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.

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.

Caution

Do not operate this heater outdoors at

temperatures below 20 degrees Fahrenheit

(°F) (-7 degrees Celsius [°C]).

2E. Gas Supply and Piping

2E-1. General Instructions

Reviewthefollowinggeneralinstructions before

continuingtheinstallation.

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. 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. Teledyne

Laars heaters shipped from the factory are

certified to operate at an altitude of 0 to 2000 feet

(0 to 609 m), or if so ordered, at higher altitudes.

In the United States, the heater manifold is

marked with a tag or sticker indicating one of the

followinghigh altitudeoperationcodes:

a. High altitude (H) - 2,000 to 6,000 feet (609 to

1829 m)

b. High altitude (J) - 6,000 to 10,000 feet (609 to

3048 m)

3. In Canada, the heater rating plate is marked for

specific altitude requirements: high altitude (H) is

2,000 to 4,500 feet (609 to 1372 m) above sea

level.

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. Thesenumbersarefornaturalgas(0.65Sp. Gr.)and are

based on 1/2 inch (13 mm) water column pressure drop.

Checksupplypressurewithamanometer,andlocalcode

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 preceding with work.

3. Pipe fittings must be considered when determining gas

pipe sizing.

ManualShutoff

Valve

Gas Supply

Inlet

Equipment

Inlet

Union

Cap

T-Fitting

3" Min. Nipple

Figure 5. The proper design for a sediment trap / drip

leg.

Page 6

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 heater:

1. Wire the heater to a 120V or 240V /60 Hertz

(Hz) electrical source.

2. Connect the wires from the source to the leads on

the right side of the heater in the space behind the

ignition control (see Figure 8).

3. Remove the screw located to the lower right of

the transformer and open the hinged cover.

NOTE: No external junction box is required.

2F-2. Auxiliary Time Clock Wiring

(LLD or LLG)

If you install a time clock to control the filter

pump operation, it is recommended that the time clock

have its own low voltage (Fireman’s) switch to turn off

the heater before turning off the pump. The switch

should shut off the heater about 15 minutes before the

filter pump shuts off. This will allow for a more

efficient operation by removing any residual heat

contained in the heat exchanger back to the pool.

To install a time clock auxiliary switch into the

heater wires (see Figure 9):

1. Removeheaterdoor.

2. Remove the factoryinstalledwirebetween

terminals 1 and 2 on the terminal strip (see Figure

9).

3. Connect the wires from the time clock auxiliary

switch to the two terminals. Use American Wire

Gage (AWG) No. 14 gauge stranded copper wire

with a temperature rating of 221°F (105°C) or

greater.

The length of the wire between the heater and the

time clock should not exceed 10-15 feet (4.57 m). The

contact points of the time clock switch should be silver,

or a low resistance alloy.

2F-3. Remote Operation

(Model LLD Only)

The Laars Lite pool/spa heater controls can

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 under-sized 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

notexceed the specified value. The minimum value

listed is for the purpose of input adjustment. Refer to

Table 4.

Table 4. Gas Supply Pressure Requirements

Supply Pressure Natural Gas Propane Gas

Water Column in. (mm) in. (mm)

Minimum 6 (152) 10 (254)

Maximum 14 (356) 14 (356)

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.

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 (LLG Only)

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.

2F. Electrical Wiring

2F-1. General Information (LLD 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) and

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

Model LLG & LLD Pool and Spa Heater Page 7

Figure 6. LLD Connection/Schematic Wiring Diagram.

Page 8

Figure 7. LLG Connection/Schematic Wiring Diagram

be wired for remote operation. The CS-02 remote

control permits switching from one temperature

controller to the other and turning the heater on and

off from a remote location. The CS-04 includes the

same features as the CS-02 plus a remote tempera-

ture controller. Contact Teledyne Laars for further

information. Reference part numbers CS-02 and

CS-04.

An interrupt (on/off) type remote can be

connected by removing the jumper wire on the terminal

block located in the control compartment (see

Figure 6) and connecting the two wires from the

remote to the two terminals on the terminal block. This

type of remote control will turn the heater on or off,

but will not switch between the two temperature

controllers on the Flex-Temp control panel.

Model LLG & LLD Pool and Spa Heater Page 9

Figure 8. Field Wiring Connections (LLD).

Figure 9. Time Clock Wiring.

Figure 10. Piping installation.

Figure 11. Plastic piping connections.

To connect a 3-wire remote (not supplied by

Teledyne Laars), order a wire harness assembly (part

No. E0120000) which connects to the flex-temp

control panel. Installation instructions are included

with the wire harness assembly.

Consult with Teledyne Laars Service Department

with questions about installing remotes other than

Teledyne Laars.

2G. Water Flow System

2G-1. Flange Installation

The heater has 2" universal header couplings.

You can connect threaded 2" iron pipe, unthreaded

1-1/2" iron pipe, 1-1/2" or 2" copper pipe without an

adapter (see Figure 10).

Plastic piping (PVC Schedule 40) can be con-

nected to the heater if local codes allow it, by using the

CPVC nipples included with your heater.

Page 10

Figure 13. Flue collector holddown brackets.

Figure 12. Heat exchanger reversal.

To install plastic piping (see Figure 11):

1. Remove CPVC nipples from plastic bag.

2. Screw CPVC nipples into metal flange until tight,

using teflon tape on plastic threads.

3. Attach PVC plumbing to CPVC pipes using PVC

to CPVC cement only.

2G-2.Reversible Water Connections

Teledyne Laars ships the Laars Lite heater with

the water connections on the right side. The Laars Lite

heater can be installed with the water connections on

either side. It could be necessary, or helpful, to switch

the connections to the left side to improve access for

installationservice. Perform this modification before

installing the heater using the following procedures:

1. Removeheaterdoor.

2. If there is a vent cap or drafthood (indoor) on top

of the heater, remove it.

3. Remove all hex-head screws fastening the top and

lift the top assembly straight up (see Figure 12).

4. Remove rainshield assembly and set it aside.

5. Remove screws that fasten the gap closures and

put them aside. Remove gap closures.

6. Remove the fiberglass insulation and insulation

retainer covering header sensors (see Figure 14).

7. Disconnect the two yellow leads (Model LLG

only) from the redundant limit fuse located on the

flue collector (see Figure 12).

8. Remove the screws securing the two flue collec-

tor holddown clamps and remove the clamps (see

Figure 13). Remove flue collector.

9. Remove the three jacket/plug grommets and drain

plugs (see Figure 12). One set is located under

the water connections on the right side. The other

is on the left side toward the front of the heater.

10. Tag and disconnect the white wire on the pressure

switch (PS) and the white wire on the Fireman's

switch terminal (see Figure 6 or 7) which leads to

the high limit switch.

11. Remove plastic tie wraps and pull the white wires

out of the front compartment through the vesti-

bule cover and coil them on the heat exchanger.

CLAMP

IN/OUT HEADER

BRACKET

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