user manual

ManualsBrandsHayward Pools ManualsSwimming Pool HeaterSwimming Pool Heater Pool and Spa/Hot Tub Heater

Section I. General Information

Introduction:

his manual contains instructions for installation,

peration, maintenance, troubleshooting and parts

lists for the safe use of the Model H250IDL, H350IDL

and H400IDL Low NO

swimming pool/spa/hot tub

heaters.

Hayward strongly recommends that the manual be

read by the installer before installing the swimming

pool/spa/hot tub heater. If after reviewing the manual,

any questions still remain unanswered, contact the

factory or local representative. Following heater

installation, the installer should leave the manual with

the consumer for future reference.

Hayward heaters:

The H-Series gas-fired pool/spa heater is the

result of nearly 50 years in the engineering and pro-

duction of the finest water heating equipment. The

direct fired finned-tube design of the pool/spa heaters

is the most advanced in the industry, offering highly

efficient, economical pool/spa heating and scale free

operation. No effort has been spared in making the

most rugged, highly dependable, easy-to-maintain

pool/spa heater available.

The H-Series heaters are suitable only for heating

of swimming pools, spas, or hot tubs. These heaters

should not be used as space heating boilers, general

purpose water heaters, or for heating salt water pools

and fish ponds. When installed and operated in accor-

dance with the manual’s instructions, the H-Series

heater will provide many years of trouble free service

and increased pool/spa enjoyment.

Limited warranty summary:

e warrant the H-Series pool/spa heater to be

ree from defects in materials and workmanship, and

we will within one year from date of installation for all

users, for the original purchaser, repair or, at our

option, replace without charge any defective part.

We further warrant that if the heat exchanger or

exchanger headers (water-containing section) leak

within one year from date of such installation for all

users, due to defects in materials and workmanship,

we will provide a replacement part.

Under the terms of the special FireTile™ limited

warranty, we will replace any FireTile™ components

used in the combustion chamber of the pool/spa

heater which fail from defects in the workmanship and

materials under normal use and service in a single

family residential application for a period of (5) years.

Cost of freight, installation, fuel, and service labor

(after one year) is at user’s expense. For full details

of warranty agreement, see warranty certificate

included in this manual.

CAUTION: If the pool/spa heater is damaged or

destroyed by improper maintenance, excessive

water hardness, incorrect water chemistry, or

freezing it is not covered under the manufactur-

er’s warranty.

Contents

ECTION I. GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Hayward heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

SECTION II. HEATER SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Selecting the correct size heater . . . . . . . . . . . . . . . .4

For a swimming pool . . . . . . . . . . . . . . . . . . . . . . . . .4

For a spa or hot tub . . . . . . . . . . . . . . . . . . . . . . . . . .4

SECTION III. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Equipment inspection . . . . . . . . . . . . . . . . . . . . . . . . .5

Important notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Conformance with codes . . . . . . . . . . . . . . . . . . . . . .5

Sea Level/high altitude installation . . . . . . . . . . . . . . .5

Location of Heater . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Flooring

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Reversible water connections . . . . . . . . . . . . . . . . . .5

Outdoor installation and venting . . . . . . . . . . . . . . . . .6

Indoor installation and venting . . . . . . . . . . . . . . . . . .7

Air supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Equipment located in confined spaces . . . . . . . . . . .7

Vertical Venting—Negative Pressure . . . . . . . . . . . . .8

Indoor Adapter Kit Installation . . . . . . . . . . . . . . . . . .8

Vent Sizing Table . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Horizontal or Vertical Venting-Positive Pressure . . . . . .10

Special Gas Vent Adapter Kit Installation . . . . . . . . .10

Indoor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Connecting Special Gas Vent to the Heater . . . . . .11

Gas supply and piping . . . . . . . . . . . . . . . . . . . . . . .12

All gas installations . . . . . . . . . . . . . . . . . . . . . . . . . .13

Water piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Installation above pool/spa surface . . . . . . . . . . . . .16

Automatic chlorinators and chemical feeders . . . . .16

Pressure relief valve . . . . . . . . . . . . . . . . . . . . . . . . .16

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . .17

Remote control connection . . . . . . . . . . . . . . . . . . .18

Remote thermostat connection

. . . . . . . . . . . . . . . .

Connecting a remote . . . . . . . . . . . . . . . . . . . . . . . .18

2-Wire remote thermostat . . . . . . . . . . . . . . . . . . . .18

2-Wire Remote Switch . . . . . . . . . . . . . . . . . . . . . . .18

3-W

ire Remote Switch

. . . . . . . . . . . . . . . . . . . . . . .

SECTION IV

. INSTALLER CHECK-OUT AND START-UP . . . . . . . . . . . . . . .20

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Gas line testing

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Gas pressure test procedure . . . . . . . . . . . . . . . . . .20

Installation below pool/spa surface . . . . . . . . . . . . .22

Two speed pump . . . . . . . . . . . . . . . . . . . . . . . . . . .22

ECTION V. CONSUMER OPERATION & MAINTENANCE PROCEDURES . . . . .23

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Pool/Spa water chemistry . . . . . . . . . . . . . . . . . . . .23

Using chlorinators and chemical feeders . . . . . . . . .23

Heater operation . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Operating Instructions . . . . . . . . . . . . . . . . . . . . . . .24

Temperature control operation . . . . . . . . . . . . . . . . .25

Set point adjustment . . . . . . . . . . . . . . . . . . . . . . . .25

Periodic inspection . . . . . . . . . . . . . . . . . . . . . . . . . .26

Winterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Opening drain valve . . . . . . . . . . . . . . . . . . . . . . . . .27

Spring start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

SECTION VI. QUALIFIED TECHNICIAN – MAINTENANCE/SERVICING . . . .28

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Control

Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

External heat exchanger inspection and cleaning . .28

Heat exchanger removal . . . . . . . . . . . . . . . . . . . . .29

Combustion chamber . . . . . . . . . . . . . . . . . . . . . . . .29

Burner inspection and cleaning . . . . . . . . . . . . . . . .30

Burner removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Burner Installation . . . . . . . . . . . . . . . . . . . . . . . . . .30

Gas valve replacement . . . . . . . . . . . . . . . . . . . . . .30

Ignitor removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Main burner orifices . . . . . . . . . . . . . . . . . . . . . . . . .31

Gas conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Control Locations . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Temperature controls . . . . . . . . . . . . . . . . . . . . . . . .31

Vent Pressure switch . . . . . . . . . . . . . . . . . . . . . . . .31

High limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Blower vacuum switch . . . . . . . . . . . . . . . . . . . . . . .32

Water pressure switch . . . . . . . . . . . . . . . . . . . . . . .33

Thermistor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

By-pass valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Thermal control valve . . . . . . . . . . . . . . . . . . . . . . . .34

ransformer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Combustion blower . . . . . . . . . . . . . . . . . . . . . . . . . .35

SECTION VII. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . .36-39

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

PARTS ILLLUSTRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

ARRANTY & WARRANTY CARD

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

42-43