Teledyne EHE Bedienungsanleitung

FOR YOUR SAFETY - This product must be installed and serviced by authorized person-

nel, qualified in pool/spa heater installation. Improper installation and/or operation can

create carbon monoxide gas and flue gases which can cause serious injury, property

damage, or death. Improper installation and/or operation will void the warranty.

H0205000A

Installation and Operating Data

WARNING

If these instructions are not followed exactly, a fire or explosion may result,

causing property damage, personal injury, or death.

Do not store or use gasoline or other flammable vapors and liquids in the

vicinity of this or any other appliance.

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 neighbor’s 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.

Installation and

Operation Manual

Hi-E2™

Model EHE

Gas-Fired Pool

and Spa Heater

SECTION 1

General Information

1A Introduction ........................................................... 1

1B Description ............................................................ 1

1C Warranty................................................................ 1

SECTION 2

Installation Instructions

2A General Requirements .......................................... 1

2B Heater Assembly and Preparation ........................ 2

2C Heater Location ..................................................... 2

2D Installation Clearances.......................................... 2

2E Outdoor Installation............................................... 2

2F Outdoor Shelter Installation (Canada) .................. 3

2G Indoor Installation.................................................. 3

2G-1 Preparation of Heater For

Indoor Installation.................................................. 3

2G-2 Combustion Air Requirements for

One-Pipe Installation............................................. 4

2G-3 Two-Pipe Installation (Direct Vent) ....................... 4

2G-3a Connection of Combustion Air Pipe...................... 4

2G-3b Piping Materials..................................................... 4

2G-3c Size and Length of Combustion

Air and Vent Piping ............................................... 5

2G-3d Combustion Air and Vent Pipe Installation ........... 5

2G-3e Room Ventilation................................................... 7

2H Condensate Disposal ............................................ 7

2I Gas Supply and Piping ......................................... 8

2J Electric Wiring ..................................................... 10

2J-1 Electrical Power................................................... 10

2J-2 Bonding ............................................................... 10

2J-3 Auxiliary Time Clock Wiring................................ 10

2J-4 Remote Operation ............................................... 10

2K Water Piping........................................................ 11

2K-1 Reversal of Heater Water Connections .............. 11

2K-2 Pool/Spa Piping Systems.................................... 11

2K-3 Connections at Heater......................................... 11

2K-4 Pressure Relief Valve .......................................... 12

2K-5 Automatic Chlorinators (Chemical Feeders)....... 12

2L Start-Up and Adjustment..................................... 13

2L-1 Normal Operation................................................ 13

2L-2 Start-Up ............................................................... 14

2L-3 Condensate ......................................................... 14

2L-4 Gas Pressure....................................................... 14

2L-5 Adjustment of Water Pressure Switch ............... 14

2L-6 Water Temperature Rise..................................... 15

SECTION 3

Operating Instructions

3A Start-Up Procedure ............................................. 16

3B Temperature Controls ......................................... 16

3C Lighting and Shutdown ....................................... 17

3C-1 Lighting the Heater .............................................. 17

3C-2 Shutdown............................................................. 17

3D Water Chemistry ................................................. 17

3D-1 Pools.................................................................... 17

3D-2 Spas .................................................................... 17

3D-2a Spa Water Chemistry.......................................... 17

3D-2b Water Changing .................................................. 17

3D-2c Corrosion............................................................. 18

3D-2d Testing................................................................. 18

3E Spa/Hot Tub Safety Rules................................... 18

3F Swimming Pool Energy Saving Tips................... 18

3G Seasonal Care..................................................... 19

3G-1 Spring and Fall Operation................................... 19

3G-2 Winterizing .......................................................... 19

3H Periodic Inspection .............................................. 19

3H-1 Owner Inspection ................................................ 19

3H-2 Professional Inspection ....................................... 20

SECTION 4

Maintenance and Service

4A General ................................................................ 20

4B Induced-Draft Combustion System..................... 21

4C Heater Components and Their Operation........... 21

4D Combustion Air Filter .......................................... 22

4E Electrical Trouble Shooting ................................. 22

4E-1 115V Electrical Power Supply ............................. 22

4E-2 Control Circuit Trouble Shooting......................... 23

4E-2a Transformer......................................................... 23

4E-2b Fuse..................................................................... 23

4E-2c Fireman Switch and External Interlocks ............. 24

4E-2d Limit Switches ..................................................... 24

4E-2e Water Pressure Flow Switch............................... 24

4E-2f Temperature Control ........................................... 24

4E-2g Venturi Pressure Switch ...................................... 24

4E-2h Ignition Control .................................................... 24

4E-2i Burner Limit Switch ............................................. 25

4E-2j Vent Limit Switch ................................................ 25

4E-2k Combustion Blower ............................................. 25

4E-2l Igniter................................................................... 25

4F Venturi Combustion Flow System....................... 25

4F-1 Pressure Measurement Ports.............................. 25

4F-2 Venturi System Checkout.................................... 26

4F-2a Unfired Venturi Differential Pressure .................. 26

4F-2b Gas Pressure Offset............................................ 26

4F-2c Gas Orifice Differential........................................ 26

4F-3 Air Flow Investigation .......................................... 27

4F-3a Combustion Air Flow........................................... 27

4F-3b Flow in Heater and Vent...................................... 28

4F-4 Fuel Gas Type and Gas Orifice Size .................. 28

4F-5 High Elevation Operation .................................... 28

4G Combustion Condensate..................................... 28

4H Major Component Service................................... 29

SECTION 5

Capacities and Dimensions

5A General Information ............................................ 29

SECTION 6

Replacement Parts

6A. General Information ............................................ 30

TABLE OF CONTENTS

Hi-E2 Page 1

SECTION 1.

General Information

1A. Introduction

This manual contains information for the proper

installation and operation of the Hi-E2Model EHE

pool/spa heater. Certain sections are specific to United

States or Canadian installations, and are labeled United

States or Canada. Procedures in this manual must be

followed exactly. To obtain a copy of this manual

contact Teledyne Laars. For address information see

back cover.

1B. Description

The Hi-E2is a very efficient gas-fired pool and

spa heater. Its combustion system includes a heat

exchanger which extracts 95% of the energy in the gas

fuel. It has no standing pilot burner. It exceeds the

requirementsofenergyconservationregulationssuch

as those in California, Hawaii, New York, Oregon and

other states which require that a pool heater have

intermittentignition.

The heater is designed to operate in conventional

swimming pool and spa equipment arrangements. It

requires 115V 60 Hz electrical power. It has the

versatile Teledyne Laars FlexTemp dual-thermostat

control system for pool/spa combinations.

The Hi-E2is certified by International Approval

Services, Inc. to comply with latest editions of

applicable standards. In the United States, the

applicable standard is ANSI Standard Z21.56 for

gas-fired pool heaters. In Canada, it is Standard CAN

1-4.7-M85.

The heater has been designed specifically to heat

fresh water swimming pools and spas, and with proper

installation and care, it will provide years of reliable

service. Do not use it to maintain pool or spa water

temperature below 70°F. Do not use it as a heating

boiler or general service water heater or to heat salt

water. For special applications, consult your Teledyne

Laars dealer.

1C. Warranty

The Hi-E2is sold with a limited factory warranty.

A copy of the warranty is included in a plastic bag

inside the heater and on the back cover of this manual.

The home owner should fill out the warranty

registration card included in the plastic bag and return

it to Teledyne Laars. The warranty does not cover

damage caused by improper installation, operation, or

field modification; or damage to the heat exchanger

caused by corrosive water. See Section 3F for

guidelineson pool water chemistry.

WARNING

Improper installation or servicing can cause

property damage, injury or death due to fire,

asphyxiation or carbon monoxide poisoning.

SECTION 2.

InstallationInstructions

2A. General Requirements

All gas-fired products require correct installation

to assure safe and satisfactory operation. The

requirementsforpoolheaters include the following:

1. Appropriate site location and clearances.

2. Sufficient supply of clean air for combustion and

ventilation.

3. Proper venting of products of combustion.

4. Properly sized gas pipe.

5. Properly sized gas meter.

6. Adequate water flow.

7. Provision for disposal of combustion condensate

water.

In the United States, installation must be in

accordance with local codes and the most recent edition

of the National Fuel Gas Code, ANSI Z223.1. The

Code can be obtained from:

National Fire Protection Association

1 Batterymarch Park

Quincy, MA 02269

In Canada, install the heater in accordance with

local codes and the most recent edition of the

Installation Codes for Gas Burning Appliances, CAN

1-B149.1 & .2. The Canadian Gas Codes are available

from:Canadian Gas Association

55 Scarsdale Road

Don Mills, Ontario

M3B 2R3

Special Precautions

Liquefied petroleum (LP) gas is heavier than air.

Therefore, a pool heater using LP gas is subject to

special installation rules. Consult local codes and fire

protection authorities about specific installation

restrictions.

Fuel gas and its combustion products are known

to cause cancer or harm the reproductive process.

Follow these installation instructions and applicable

codes exactly to avoid this.

Page 2

2B. Heater Assembly and Preparation

The Hi-E2can be installed in a variety of ways,

some of them requiring preparation or assembly in the

field. In all cases, condensate tubing and fittings,

which are provided with the heater, must be connected

and routed. Water connections are provided on the

right side of the heater but can be changed to the left

side by reversal of the water headers.

It is best to handle these preparations before the

heater is in its final location. Instructions are provided

in subsequent sections of this document.

Installation at High Elevation

The Hi-E2has a venturi-type combustion system

which does not require modification for operation at

high elevation. In this type of system, air and fuel gas

density changes are automatically compensated for,

assuring proper air/fuel mixture. Heating capacity is

reduced about 3 percent per 1000 feet (305 meters)

above sea level. In general, efficiency at high elevation

is equal to or better than at sea level.

2C. Heater Location

The Hi-E2may be installed indoors or outdoors

as outlined in later sections. When installed indoors,

combustion air will often be piped to the heater and

this requirement may affect the choice of location (see

later section on air for combustion and ventilation).

Both indoor and outdoor installations require provision

of means for disposal of combustion condensate per

section 2H.

Install the heater at least 5 feet (1.52 meters)

from the inside wall of the pool or spa unless the heater

is separated from the pool or spa by a five-foot (1.52

meter) high solid fence, wall or other permanent

barrier.

When pool equipment is located below the pool

surface, a leak from any component can cause large

scale water loss or flooding. Teledyne Laars cannot be

responsible for such water loss or flooding or resulting

damage. Location of the heater below or above the

pool deck affects operation of its water pressure

switch. See sections on water piping and heater start-

up for more information about this.

WARNING

When pool equipment is located below the

pool surface, a leak from any component can

cause large scale water loss or flooding.

Teledyne Laars cannot be responsible for

such water loss or flooding or resulting

damage.

Locate the heater in an area where water leakage

will not result in damage to the area around the

appliance or to a structure. If forced to locate the

heater where water leakage may cause damage, provide

a suitable pan with drain under the heater. This pan

must not restrict air flow or heater functions.

In selection of a location, disposal of combustion

condensate must also be considered. The heater can

produce three gallons of condensate water per hour

under some operating conditions. Means to drain this

condensate must be available or special provisions,

such as a condensate pump must be provided. See later

sectiononcondensatedisposal.

2D. Installation Clearances

Clearances between the heater and combustible

material must be per Table 1.

Surface/Component Minimum Clearance

Inches (mm)

Rear & Blank Side 2 (55)

Pipin

Side 12 (305)

Front 18 (455)

Top - Indoors 6 (150)

Top - Outdoors Open (See Note)

Floorin

Combustible

Vent 0

Table 1. Installation Clearance Requirements.

NOTE: See Outdoor Installation section

regarding roof overhang.

These clearances are the minimum acceptable.

Whenever possible, larger clearances should be

provided to assure adequate room for service

operations. Note that gas piping must be provided

through the left side of the unit and that the combustion

air duct, when provided, also enters through the left

side. See later section on combustion air, and also the

section on water piping.

Do not install the heater on carpeting or similar

material.

2E. Outdoor Installation

Locate the heater in an open, unroofed area and

maintain the clearances shown in Table 1. Do not

locate the heater below or adjacent to any doors,

windows, louvers or grates, etc., which connect in any

way with an inhabited area of a building, even through

another building such as a garage or utility room (see

Figure 1). Do not locate the heater below an outdoor

deck, unless treated as an indoor installation with

adequate clearances and proper venting to a location

away from the deck.

Hi-E2 Page 3

located in. A two-pipe system (sometimes referred to

as “direct vent” or “sealed combustion”) has a vent

pipe plus a pipe bringing air directly to the heater's

combustionsystem.

Section 2G-2 specifies requirements for provision

of combustion and ventilation air for one-pipe

installations. Section 2G-3 covers two-pipe

installation.

An important consideration in selecting one or

two pipe installation is the quality of the combustion

air. Indoor air is sometimes contaminated with various

household or pool sanitation chemicals which can

cause corrosion in the heater combustion system.

Unless the indoor air is known to be free of these

materials, two pipe installation is strongly

recommended.

2G-1.Preparation of Heater For Indoor

Installation

If the Hi-E2is to be installed indoors, its exhaust

discharge grille must be converted to an exhaust pipe

configuration. The necessary vent collar, gasket and

screws are shipped packaged within the heater. The

Figure 1. Outdoor heater location.

Figure 3. Vent collar assembly for indoor installation.

Figure 2. Removal of outdoor exhaust grille.

If the heater is installed close to a structure,

protect it from rain water runoff by means of gutters,

roof water diverters or similar measures. Do not locate

the heater close to irrigation sprinklers. Water from

sprinklers may damage controls and electronic

components.

Because the Hi-E2is very efficient, combustion

system exhaust gases are moist. Do not locate the

heater such that this exhaust will impinge on

structures or vegetation which may be damaged by

combustioncondensate.

WARNING

In United States

Do not install the heater with the vent within 4

feet (1.22 m) of any opening into a building.

In Canada

Do not install the heater with the vent within 10

feet (3.05 m) of any opening into a building.

2F. Outdoor Shelter Installation (Canada)

An outdoor shelter is an unoccupied enclosure

whichdoesnotcommunicatedirectlywithoccupied

areas. The Hi-E2may be installed in such a shelter

only when the installation is in accordance with local

codes and the most recent edition of Standard CAN/

CGA B-149. These codes and standards and Teledyne

Laars require that the heater be properly vented as

outlined in this manual. Other requirements also apply,

such as provision of ample uncontaminated air for

combustionandventilation.

2G. Indoor Installation

The Hi-E2can be located indoors when provided

with “one-pipe” or “two-pipe” systems for combustion

air and combustion product venting. A one-pipe

installation has only a vent pipe, and air for

combustion must be provided to the room the heater is

Page 4

2G-3a. Connection of Combustion Air Pipe

A collar for combustion air pipe connection is

provided in the heater at the inlet of the filter box. As

shown in Figure 4, the combustion air pipe is routed

through the side of the heater to the filter box

connection. Remove the cover plate from the left side

panel to provide access for the air pipe.

2G-3b. Piping Materials

Vent piping must be corrosion resistant because

combustion condensate is usually present on its

internal surfaces. Only the following materials are

acceptable for vent piping:

PVC Class 100, Class 125 or Schedule 40

CPVC Schedule40

29-4C®Stainless steel venting materials listed for

ventingofcondensing gas-firedappliances.

29-4C®isatrademarkofAlleghenyTeledyne.

WARNING

Do not store any chemicals, cleaners, or other

corrosive material near combustion air

openings or in the room. Avoid location of

dryer vents in the vicinity of combustion air

openings. Failure to prevent corrosive

materials from mixing with combustion air can

result in reduced heater life and unsafe heater

operation.

2G-3. Two-Pipe Installation (Direct Vent)

Thissection specifiesinstallationrequirements

for combustion air and vent piping for “two pipe”

installations. A two-pipe system provides isolation of

the Hi-E2combustion system from the space in which

the heater is installed. It has not only a vent pipe, but

also a combustion air pipe to provide air directly from

the outdoors. Research studies have shown that

contaminants which may corrode internal heater parts

are typically at much lower levels in outdoor air than

in air from indoors.

Figure 4. Connection of combustion air pipe to heater.

conversion can be done quite simply as follows (see

Figures 2 and 3):

1. Remove the vent exhaust grille by removing

the four screws which retain it. The grille, its

gasket, and the screws may be discarded.

2. Place the vent collar gasket on the top of the

heater aligning its center hole and screw holes

with those in the top of the heater.

3. Place the vent collar over the gasket and

fasten it in place with the screws and

lockwashers provided. Be sure that all

components are properly aligned. Screws

must be tightened enough to assure a sealed

joint without deforming the vent collar.

2G-2.Combustion Air Requirements for

One-Pipe Installation

One-pipe indoor installations must have specific

provisions for supply of combustion and ventilation air

to the room in which the heater is located. Two air

openings must be provided — one near the ceiling and

one near the floor. When air is provided directly

through an outside wall, each opening must have at

least one square inch (6.5 square cm) of area per 4000

BTU/h of heater input. When air is provided indirectly

through ducts from the outside, the openings and

passages must have at least one square inch of area per

2000 Btu/h of heater input. These requirements are

interpreted in Table 2.

Model

Required net free area in square inches (sq. cm)

for each of 2 openings - one near ceiling and

one near floor

Directly Throu

h an

Exterior Wall Throu

Horizontal Ducts

220 55 (355) 110 (710)

350 88 (570) 175 (1130)

Table 2. Required Net Free Area of Openings for

Combustion and Ventilation Air.

Note that the numbers indicate the net free area

— after allowing for the blockage of grille bars, etc.

See applicable local codes and the previously-cited

national codes for details. Even though codes may

permit it, Teledyne Laars does not recommend

installations with only “infiltration” as the means for

provision of combustion air.

See Section 2G-3c for vent pipe sizing.

Hi-E2 Page 5

Table 3. Maximum Combined Length of Combustion Air and Vent Piping in Feet.

Table 3 specifies the allowable length of piping for

various situations.

The following examples illustrate use of table 3:

1. A Model 350 heater is to be installed in a one-

pipe system (see Figure 5). The vent pipe is 42

feet long and has five elbows. Per Table 3, 5"

piping must be used. (Only 16 feet of 4" vent pipe

would be allowable.)

2. A Model 220 heater is to be installed in a two-

pipe system (see Figure 6). The combustion air

pipe is to be 13 feet long with three elbows and

the vent pipe is to be 9 feet long with one elbow.

Since the total is 22 feet and four elbows, 4" pipe

must be used. (Table 3 indicates that the

maximum length of 3" pipe is 11 feet for a system

with four elbows.)

2G-3d.Combustion Air and Vent Pipe

Installation

The Hi-E2must be vented to the outdoors. It must

not be vented in common with any other appliance,

even if that appliance is of the condensing type.

Common venting can result in severe corrosion of the

Hi-E2or of the other appliances or their venting, or

escape of combustion product gases through such

appliances or vents. Do not vent the Hi-E2to a

fireplacechimney or building chase.

Combustion air ducting, when provided, must not

be shared with any other appliance or with another Hi-

E2. Doing so may result in flow of air through the

other appliances instead of directly from the outdoors.

The combustion air intake and vent outlet must

be located exterior to the building and in the same

pressure zone - i.e. both through the roof or both

through a side wall. The vent terminal must be located

in accordance with local codes, as applicable, and in

accordancewiththefollowing:

1. Locate the vent terminal so that it will not be

damaged by pedestrians and other traffic, and so

that the discharge is not offensive. The National

Fuel Gas Code requires a through-wall vent

terminal be at least 7 feet (2.13 m) above grade if

located at a public walkway.

Figure 5. “One-pipe” installation.

18'

10'

TotalLength:42'

TotalElbows:5

Figure 6. “Two-pipe” installation.

EHE350

Combustion

AirPipe

Vent

Pipe

EHE220

Comb.

Air Vent Total

Length 13' 9' 22'

Elbows 3 1 4

Combustion air piping may be single-wall

galvanized steel pipe or any of the above materials.

2G-3c.Size and Length of Combustion

Air and Vent Piping

Piping for combustion air and venting must be

large enough to avoid restriction of the heater

combustion system. Pipe diameter, number of elbows

and length of pipe determine how much it restricts flow

to or from the heater. Also, a large heater requires

larger pipe than a small heater because it operates with

higher flow of combustion air and exhaust products.

Model Pipe Size

Inches (cm)

Number of Elbows

12345678910

Total Len

th of Pipe - Feet (m)

220 3" 35 (10.6) 27 (8.2) 19 (5.8) 11 (3.4) NA NA NA NA NA NA

4" 173 (52.7) 163 (49.6) 153 (46.6) 143 (43.5) 132 (40.2) 122 (37.1) 112 (34.1) 102 (31) 92 (28) 81 (24.6)

350 4" 61 (18.6) 50 (15.2) 39 (11.9) 27 (8.2) 16 (4.8) NA NA NA NA NA

5" 225 (68.6) 211 (64.3) 197 (60) 184 (56) 170 (51.8) 157 (47.8) 143 (43.5) 130 (39.6) 116 (35.4) 103 (31.4)

Page 6

2. Locate the vent terminal so the vent exhaust does

not settle on building surfaces and other nearby

objects. Vent products may corrode such surfaces

or objects.

3. Locate the vent terminal at a sufficient horizontal

distance from any gas or electric metering,

regulating or relief equipment. In the United

States, this distance must be at least 4 feet

(1.21 m). In Canada, it must be at least 10 feet

(3.04 m).

4. Locate the vent terminal at a sufficient horizontal

distance from any building opening. Take special

care to assure that combustion products do not

enter a building through windows, doors,

ventilation inlets, etc. In the United States, this

distance must be at least 4 feet (1.21 m). In

Canada, it must be at least 10 feet (3.04 m).

As shown in Figures 8 and 9, the combustion air

intake and the vent outlet must be installed no closer

together than 18" (45.7cm) and no farther apart than

60" (1.5m). The combustion air inlet opening must

face downward to prevent entry of rain or snow. The

vent outlet must discharge away from the combustion

air inlet - normally in a horizontal direction when on a

wall and vertically upward when on a roof. Both

should terminate at least 12" (30.5cm) above the snow

accumulationlevel. In locations with freezing climate,

extension of the vent pipe outside of the building

shouldbe minimized. The insect screens provided with

the heater must be installed at the combustion air and

vent pipe openings as shown in Figure 10. Insect

screens are sized to fit the inside of a 5" PVC pipe

fitting. Trim them as necessary for smaller pipe sizes.

Connect the vent pipe to the heater vent collar

with an air-tight corrosion-resistant clamp. The

connection must not allow leakage of combustion

products into the space but should be removable for

service. See Figure 7.

Connect the combustion air pipe to collar of the

air filter box. For this combustion air pipe only, sheet

metal pipe is most convenient and can be screwed

directly to the collar. Seal the joint with silicone sealer

or similar mastic material.

Install vent piping with a continuous rise of at

least 1/4" per foot (20 mm per meter) away from the

heater. This will assure that any condensate forming in

the vent pipe will flow back to the heater where it can

be disposed of properly.

Support vent piping with suitable hangers so its

weight does not bear on the heater or building

penetration and so that piping joints are not strained.

Support horizontal runs at intervals no greater than

6 feet (1.82 meters), and closer if necessary to avoid

sagging. Sagging can trap condensate water and block

thevent. Figure 8. Vent and Combustion Air Terminals at

Exterior Wall.

Figure 7. Indoor Vent Connection, Hi-E2 Pool Heater

PVCAdapter

whenrequired

4" PVC Pipe

Field-provided

Clamping

Connector

withNeoprene,

Nitrileor EPDM

Sleeve

Hi-E2VentCollar

7"min.

12"min.

tomaximum

snowlevel

Gradelevel

ornormal

snow

18"min.

60"max

6"min.

Combustion

Air Pipe

Vent Exhaust

Pipe

SpecialInsectScreens Installed

(SeeFig. 10)

Hi-E2 Page 7

Figure 10. Installation of Insect Screens.

Installspecial

insectscreen at

endofpipe

insidecoupling

orelbow. Cut

tosize as

necessary.

Combustion

AirPipe

Elbow

Vent

Exhaust

Pipe

Trap

Figure 12. Condensate Drain and Trap.

Overflow

Disposal

WaterLevel

PushedDown

Slightly

WaterLevel

PulledUp

2"-3"

(50-75mm)

Condensate

From

Collector

Drain

CondensateFrom

Vent/BlowerDrains

1/4" - 3/8"

(6-10mm)

Disposal

Vent

Drain

Figure 11. Condensate Drainage Components.

Collector

Drain

Trap/

Neutralizer

Blower

Drain

Plumbingvent

roofboot

A=Maximumsnowaccumulationlevelplus 12"

Figure 9. Vent and Combustion Air Terminals at Roof.

Combustion

AirPipe

Elbow

InsectScreens

Installed

(SeeFig. 10)

Vent

Exhaust

Pipe

18" min.

60" max

Both combustion air and vent piping joints must

be sealed. Metal combustion air pipe joints should be

fastened with screws and sealed with permanent sealer

or tape. Plastic vent pipe joints must be made with

solvent cement listed for such use. Joints in 29-4C®

stainless steel pipe must be sealed in accordance with

its listing. Connection of combustion air and vent

piping to the heater should be serviceable — i.e.

removable for heater service.

2G-3e.Room Ventilation

The room a Hi-E2is installed in must be provided

with adequate ventilation. Like other gas-fired

appliances, the Hi-E2releases heat to its environment,

and a room with no ventilation may become too warm.

In one-pipe installations, the normal (code-

required) provisions for combustion air also assure

reasonable ventilation of the room. If a two-pipe

system is installed, ventilation must be provided by

other means, such as through grilles or openings or

with a small fan.

2H. Condensate Disposal

Inahigh-efficiencycombustionprocess,

combustion product gases are cooled so much that

liquid water is condensed. Flow of this “condensate”

can be quite high. When pool water is very cold, as

much as two or three gallons of condensate can be

produced in an hour. Condensate is mildly acidic.

Page 8

Before treatment, its “pH” is typically in the 3.5 to 6.0

range.

Handling and disposal of condensate is not

complicated, but it must be done correctly to prevent

problems or complaints. A trap/neutralizer assembly is

provided with the heater to simplify installation. This

assembly is easily installed in the base of the heater.

Figure 11 illustrates its installation and the routing of

drain tubes.

To install the condensate assembly, first install

the short length of 5/8" I.D. tubing on the barbed

fitting on the bottom of the condensate collector. Then

drop the condensate tray into the opening in the base

pan of the heater, bending the 5/8" tubing as necessary

to get the tube into the tray. Readjust the 5/8" tubing

so that its lower end is 1/4" - 3/8" above the bottom of

the tray. The tray can be positioned with the outlet

fitting to the right, as shown in Figure 11, or with the

fitting to the left, depending on the direction required

for condensate disposal. Connect the piece of 1/2" I.D.

tubing to this outlet fitting and route it out of the heater

through the hole in the side of the base panel. This tube

carries condensate to the drain. If this disposal tube is

routed to the left, remove the plug button from the hole

on the left side of the base panel and push it into the

hole on the right side.

Connect the remaining short piece of 3/8" I.D.

tubing to the barbed tee fitting in the tubing

immediately in front of the blower. Position this tubing

so that its bottom end is 1/4"-3/8" above the bottom of

the condensate tray. This tube provides drainage for

the vent duct and blower.

A package of limestone gravel neutralizer is

provided with the condensate assembly. Place this

gravel in the tray after installing and properly

positioning all tubes. Be sure that a limestone pebble

does not plug any of the tubes. Place the cover on the

tray when this is done.

It is important that there be no sagging sections

of tubing to trap water. Drainage to the trap and out of

the trap to the drain must be assured by continuous

downward routing of these tubes. It may be necessary

to elevate the heater to provide downward routing. The

outlet of the disposal tube must be open to the air.

If a gravity drain is not available, a condensate

pump must be provided in the field. Suitable

condensate pumps are available commercially at air

conditioningequipmentdistributors.

Incorrect installation of the condensate assembly

or tubing can result in overflow or waterlogging of the

vent. In normal operation, water accumulates in the

tray at the level of the outlet fitting, and this provides a

“waterseal”whichaccommodatescombustionsystem

pressures. Figure 12 illustrates the water seal. Note

that water is “pulled” up toward the condensate

collector pan and is pushed down slightly by the vent/

blower drain. If there is no water seal, air rushes into

the collector drain, preventing normal drainage of

condensate water, until vent drainage provides the seal

(see Section 2L, Start-Up and Adjustment).

The installer must be sure to take whatever

measures are necessary to prevent property damage by

condensate overflow. If the heater location is such that

this water can directly or indirectly damage a building,

furnishings or other property, an overflow pan or other

appropriate preventative measure should be provided.

2I. Gas Supply and Piping

Before installing gas piping, check the rating

plate on the heater to be sure that the heater is for use

with the correct (available) gas. Make sure that gas

supply pressure is adequate per the requirements in

Table 4. Note that the system must be capable of

providing these pressures while the heater is

operating.

Supply Pressure Minimum Maximum

Natural Gas 5 Inches WC 10.5 Inches WC

(125 mm WC) (265 mm WC)

LP Gas 11 Inches WC 14 Inches WC

(280 mm WC) (350 mm WC)

Table 4. Gas Supply Pressure Requirements

Gas piping must be large enough to provide the

required gas flow rate without excessive pressure drop.

Table 5 specifies pipe sizes which will limit pressure

drop to 0.5 In WC (125 Pa), based on the National

Fuel Gas Code, ANSI Z223.1.

Model Natural Gas LP Gas

0-50'

(0-15m) 50-100'

(15-30m) 100-200'

(30-60m) 0-50'

(0-15m) 50-100'

(15-30m) 100-200'

(30-60m)

220 1" 1-1/4" 1-1/4" 3/4" 1" 1-1/4"

350 1-1/4" 1-1/4" 1-1/2" 1" 1-1/4" 1-1/4"

Table 5. Required Gas Pipe Size

Support gas piping properly so its weight does

not bear on the heater. Install a drip leg, a non-

restrictive shutoff valve and a union on the gas supply

line outside of the heater (see Figure 13).

Before operating the heater, test the gas supply

system, including all connections, for leaks using a

soap solution. Do not use a flame or any ignition

source for leak detection. Disconnect the heater and

its individual gas shutoff valve during pressure testing

if the test pressure is higher than 1/2 psig (3.34 kPa).

If the pressure is 1/2 psig (3.45 kPa) or lower, close

the manual valve on the heater gas control during

testing.

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