Raypak C-R206A-EN-C Installation Manual

INSTALLATION & OPERATING

INSTRUCTIONS

Gas-Fired
Pool & Spa
Heater

Atmospheric Models

206A, 266A, 336A & 406A

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.

207A, 267A, 337A & 407A

Lo NOx Models

This manual should be maintained in legible condition and kept adjacent to the heater or in a safe place for future
reference.

Catalog No. 6000.59AA Effective: 08-15-15 Replaces: 06-28-13 P/N 241236 Rev. 28

WATER CHEMISTRY

(Corrosive water voids all warranties)

For your health and the protection of your pool equipment, it is essential that your
water be chemically balanced. The following levels must be used as a guide for bal­anced water.

Recommended Level(s) Fiberglass Pools Fiberglass Spas

Other Pool & Spa

Types

Water Temp. (Deg. F) 68 to 88 89 to 104 68 to 104

pH 7.3 to 7.4 7.3 to 7.4 7.6 to 7.8

Total Alkalinity (PPM) 120 to 150 120 to 150 80 to 120

Calcium Hardness (PPM) 200 to 300 150 to 200 200 to 400

Salt (PPM) 4500 MAXIMUM 4500 MAXIMUM 4500 MAXIMUM

Free Chlorine (PPM)* 2 to 3 2 to 3 2 to 3

Total Dissolved Solids (PPM) 3000 MAXIMUM** 3000 MAXIMUM** 3000 MAXIMUM**

* Free Chlorine MUST NOT EXCEED 5 PPM!

** In salt water chlorinated pools, the total TDS can be as high as 6000 ppm.

• Occasional chemical shock dosing of the pool or spa water should not damage the

heater providing the water is balanced.

• Automatic chemical dosing devices and salt chlorinators are usually more efficient

in heated water, unless controlled, they can lead to excessive chlorine level which
can damage your heater, and which is not covered under warranty. A check
valve should be installed between the heater outlet and a chlorinator or other chem­ical dosing device.

• Further advice should be obtained from your pool or spa builder, accredited pool

shop, or chemical supplier for the correct levels for your water.

Rev. 28 reflects the following:
Changes to:
Additions: None
Deletions: None

2

CONTENTS

4 PART ONE

OWNER'S OPERATING INSTRUCTIONS

4 SECTION 1

START-UP PROCEDURES

4 Before Start-Up
5 Lighting Instructions & Shut-Off Procedures -

Manually Lighted Pilots MV

6

7 After Start-Up

7 SECTION 2

8 SECTION 3

8 Pool & Spa Water Chemistry
8 Automatic Chlorinators & Chemical Feeders
9 Cold Weather Operation
9 Winterizing the Pool & Spa Heater

10 PART TWO

10 SECTION 1

11 SECTION 2

11 SECTION 3

11 Code Requirements
12 Clearances
12 Outdoor Heater Installation
14 Florida and Texas Building Codes
15 Indoor Heater Installation
15 Outdoor Stack/Indoor Stack
16 Atmospheric Specifications and Dimensions
17 Lo NOx Specifications and Dimensions
18 Combustion and Ventilation Air
18 Vent Piping
19 Gas Supply Connections
20 Gas Pressure Regulator
20 Gas Pressure Adjustment Locations
20 Pipe Sizing For Gas Connections
21 Flow Rates
21 Heat Exchanger Pressure Drop Tables
22 Polymer Headers
22 Cast Iron Headers
22 Unitherm Governor Operation
23 Internal Automatic Bypass Valve
23 External Auxiliary Bypass Valve
23 Auxiliary Bypass Valve Adjustment
23 Pressure Relief Valve Installation
24 Plumbing—Water Connections
25 Heat Exchanger Reversal Procedure
26 Electrical Wiring
26 Millivolt Models
26 Advanced Flame Technology (AFT) Models
27 Transformer Wiring
28 Wiring Diagram - Millivolt (Mechanical Therm.)
29 Wiring Diagram - AFT Models, Atmospheric

Operating Instruction & Shut-Off Procedures ­Automatically Lighted Pilots IID

CAUTION

MAINTENANCE & CARE PROCEDURES

INSTALLATION & SERVICE INSTRUCTIONS

RECEIVING EQUIPMENT

GENERAL SPECIFICATIONS

INSTALLATION INSTRUCTIONS

30 Wiring Diagram - AFT Models, Lo NOx

31 SECTION 4

SERVICING INSTRUCTIONS

31 General Location of Controls
32 Control Panel Removal
32 Control Adjustments - AFT Models
32 Control Adjustments - Millivolt Models
33 Thermostat Operation - AFT Board

5 Status and Diagnostics

3
36 Remote Control Installation and Operation
36 Remote Operation
36 Activating the Remote
37 Remote Control Wiring
37 2-Wire Remote Control
37 3-Wire Remote Control
38 Time Clock / Fireman’s Switch
38 Water Pressure Switch
38 Flame Roll-Out Safety Switch
38 High Limits
39 Pilot Safety
39 Burner Tray Removal (ATM)
39 Gas Valve Removal (ATM)
39 Main Burner and Orifice Removal (ATM)
39 Pilot Removal and Cleaning
40 Heat Exchanger Removal
40 Tube Cleaning Procedure
40 Desooting Procedure
40 Combustion Chamber Removal
40 Immersion Well Replacement
41 Unitherm Governor (U.G.) Replacement
41 Lo NOx Pool Heaters
41 Operation
41 Start-Up Procedures
41 Visual Inspection
41 Electrical
41 Flame Roll-Out Safety Switch
42 Burner Tray Removal
42 Gas Valve Removal
42 Main Burner and Orifice Removal
42 Pilot Removal
42 Combustion Blower Removal

43 SECTION 5

TROUBLESHOOTING

43 Mechanical
44 Electrical - Standing Pilot Millivolt
45 Electrical - Electronic Ignition (IID)
46 Control Logic - Flow Chart

47 SECTION 6

REPLACEMENT PARTS

48 Illustrated Parts List
51 Part Numbers

3

PART ONE
OWNER'S OPERATING INSTRUCTIONS

FOR YOUR SAFETY - READ BEFORE OPERATING
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.

SECTION 1 - START-UP PROCEDURES

Your pool/spa heater has been designed for years of safe and reliable pool/spa water heating. It is available with
millivolt or electronic ignition. ASME-certified units, typically used in commercial applications, are also available.
This manual provides installation, operation, maintenance, and service information for these heaters.

ON

OFF

If your heater has been installed correctly, operating the heater is an easy task. The upper front panel of the
heater contains the control center that allows you to turn the heater On or Off and adjust the temperature set­tings for the pool or spa. The temperature range is factory set from 65°F (18°C) to 104°F (40°C). See figure
above for location of toggle switch to turn the heater On and Off. Section 4 of this manual contains more details
about the use of the controls in the Control Adjustments subsection (page 32).

BEFORE START-UP

BURNERS

Clean main burners, combustion fan (if equipped)
and air louvers of dust, lint and debris. Keep

heater area clear and free from combustibles, flamma­ble liquids and chemicals. Do not obstruct the flow of
combustion and ventilation air.

WATER

Water must be flowing through the heater during oper­ation. Ensure that the system is filled with water and
that the pump is operating.

4

CAUTION: Propane gas is heavier than air and will settle on the ground. Since propane can accumulate in

onfined areas, extra care should be exercised when lighting propane heaters.

c

LIGHTING INSTRUCTIONS AND SHUT-OFF PROCEDURES

MILLIVOLT SYSTEM

MANUALLY LIGHTED PILOT)

(

If you cannot reach your gas supplier, call the

A. This appliance has a pilot that must be lit by

hand. When lighting the pilot, follow these
instructions exactly.

B. BEFORE LIGHTING, smell all around the

appliance area for gas. Be sure to smell near
the floor because some gas is heavier than air
and will settle on the floor.

WHAT TO DO IF YOU SMELL GAS:

*Do not try to light any appliance.
*Do not touch any electric 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.

LIGHTING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Set the thermostat on the lowest setting.

3. Turn On/Off switch to the "Off" position.

4. Remove heater door panel.

5. Push in gas control knob slightly and turn
clockwise to "Off".

NOTE: Knob cannot be turned from "Pilot" to Off"

unless knob is pushed in slightly. Do not
force.

6. Wait 5 minutes to clear out any gas. If you
then smell gas, STOP! Follow "B" in the

safety information above. If you don't smell
gas, go to the next step.

7. Locate pilot mounted on the right side panel of
the burner tray.

HONEYWELL
MILLIVOLT
GAS VALVE

INVENSYS/
ROBERTSHAW
MILLIVOLT
GAS VALVE

*

fire department.

C. Use only your hand to push in or turn the gas

control knob. Never use tools. If the knob will
not push in or turn by hand, do not try to repair
it. Call a qualified service technician. Force or
attempted repair may result in a fire or explo­sion.

D. Do not use this appliance if any part has been

under water. Immediately call a qualified serv­ice technician to inspect the appliance and to
replace any part of the control system and any
gas control which has been under water.

HONEYWELL PILOT

8. Turn gas control knob counter-clockwise
to "Pilot"

9. Place flame to end of pilot tube. Push in

control knob all the way and hold to light pilot.
Continue to hold control knob in for about one
minute after the pilot is lighted, release knob
and it will pop back up. Pilot should remain
lighted. If it goes out, repeat steps 5 through 9.
If knob does not pop up when released, stop
and immediately call your service technician or
gas supplier.

10. Stand to the side of the heater and turn the

gas control knob counter-clockwise

to "On".

11. Replace heater door panel.

12. Turn On/Off switch to the "On" position.

13. Set thermostat to the desired setting.

ROBERTSHAW PILOT

SHUT-OFF PROCEDURE

1. Set the thermostat to the lowest setting.

2. Turn On/Off switch to the "Off" position.

3. Remove heater door panel.

4. Push the gas control knob slightly and turn
clockwise to "Off". Do not force.

5. Replace heater door panel.

5

CAUTION: Propane gas is heavier than air and will settle on the ground. Since propane can accumulate in

O

O

F

confined areas, extra care should be exercised when lighting propane heaters.

OPERATING INSTRUCTIONS AND SHUT-OFF PROCEDURES

ELECTRONIC IGNITION SYSTEM

(AUTOMATICALLY LIGHTED PILOT)

A. This appliance is equipped with an ignition

device which automatically lights the pilot. Do

*If you cannot reach your gas supplier, call the

fire department.

not try to light the pilot by hand.

C. Use only your hand to push in or turn the gas

B. BEFORE OPERATING, smell all around the

appliance area for gas. Be sure to smell near
the floor because some gas is heavier than air
and will settle on the floor.

control knob. Never use tools. If the knob will
not push in or turn by hand, do not try to repair
it. Call a qualified service technician. Force or
attempted repair may result in a fire or

explosion.
WHAT TO DO IF YOU SMELL GAS:
*Do not try to light any appliance.
*Do not touch any electric switch; do not use

any phone in your building.

*Immediately call your gas supplier from a

neighbor's phone. Follow the gas supplier's

D. Do not use this appliance if any part has been

under water. Immediately call a qualified

service technician to inspect the appliance and

to replace any part of the control system and

any gas control which has been under water.

instructions.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above.

2. Set the thermostat to the lowest setting.

3. Turn off all electrical power to the appliance.

HONEYWELL
VR 8300 GAS
VALVE IID

4. This appliance is equipped with an ignition
device which automatically lights the pilot. Do
not try to light the pilot by hand.

GAS

INLET

5. Remove heater door panel.

6. For Honeywell valve: Turn gas control knob
clockwise to "Off".

For Robertshaw valve: Models 266-406:

Turn gas control knob clockwise to
"Off". Model 206: Push in and move gas con-

ROBERTSHAW 7000
GAS VALVE IID

trol lever counter-clockwise to "Off"
position.

7. Wait 5 minutes to clear out any gas. If you
then smell gas, STOP! Follow "B" in the safe-

ty information above. If you don't smell gas, go
to the next step.

8. Turn gas control knob counter-clockwise

to "On". (Honeywell VR 8300 and

Robertshaw 7000)

9. Replace heater door panel.

ROBERTSHAW 7200
GAS CONTROL
LEVER SHOWN
IN “OFF”
POSITION

10. Turn on all electrical power to the appliance.

11. Set thermostat to desired setting.

12. If the appliance will not operate, follow the

GAS
INLET

instructions "To Turn Off Gas To Appliance"
and call your service technician or gas
supplier.

SHUT-OFF PROCEDURES

1. Set the thermostat at the lowest setting.

2. Turn off all the electrical power to the appli­ance if service is to be performed.

3. Remove heater door panel.

4. For Honeywell VR 8300 and Robertshaw

to "Off". Make sure knob rest against stop.

For Robertshaw 7200 gas valve.

Push in and move gas control lever counter­clockwise to "Off" position.

5. Replace heater door panel.

7000 gas valve.

Turn gas control knob clockwise

6

FTER START-UP

A

Feel the inlet and outlet pipes. Outlet pipe should be
only slightly warmer than the inlet. It should not be hot.

WARNING: Should overheating occur or the gas
supply fail to shut off, turn off the manual gas control
to the heater.

VISUAL INSPECTION - ATMOSPHERIC HEATERS

With the heater on, remove the door and make a visu­al check of the pilot and burner. The flame should be
blue with a well-defined pattern.

4" MAX

MAIN BURNER FLAME

MILLIVOLT PILOT BURNER FLAME

A yellow or "floating" flame indicates restricted air
openings or incorrect orifice size. Should this occur,
shut the heater off and contact your installer or gas
supplier.

WATER PRESSURE SWITCH

A water pressure switch is provided in the heater to
shut off the burners in the event that water supply is
interrupted. It is very important to verify that the switch
electrically opens and shuts off the gas valve when
water flow to the heater is interrupted. Otherwise,
rapid and severe damage will likely occur to the
heater. (The water pressure switch should be checked
and adjusted for proper operation by a qualified serv-
ice person at the time of installation and periodically
checked thereafter. Refer to Pressure Switch
Adjustment on pg. 38 of this manual).

WARNING: Operation of the heater without water
circulation will cause rapid and severe damage to
the heater, and will void the warranty.

SECTION 2 - CAUTION

Elevated water temperature can be hazardous. The
U.S. Consumer Product Safety Commission has these
guidelines:

1. Spa water temperatures should never exceed
104°F (40°C). A temperature of 100°F (38°C) is
considered safe for a healthy adult. Special caution
is suggested for young children.

2. Drinking of alcoholic beverages before or during
spa or hot tub use can cause drowsiness which
could lead to unconsciousness and subsequently
result in drowning.

3. Pregnant Women Beware! Soaking in water over
102°F (39°C) can cause fetal damage during the
first three months of pregnancy resulting in the birth
of a brain-damaged or deformed child. Pregnant
women should stick to the 100°F (38°C) maximum
rule.

4. Before entering the spa or hot tub, users should
check the water temperature with an accurate ther­mometer; spa or hot tub thermostats may err in reg­ulating water temperatures by as much as 4°F
(2.2°C).

5. Persons with a medical history of heart disease, cir­culatory problems, diabetes, or blood pressure
problems should obtain a physician's advice before
using pools or hot tubs.

6. Persons taking medications which induce drowsi­ness, such as tranquilizers, antihistamines, or anti­coagulants, should not use spas or hot tubs.

7

SECTION 3 - MAINTENANCE AND
CARE PROCEDURES

2. Your pump strainer basket may be full. If so
remove debris.

WARNING: Check the heater for possible rodent
nests after long periods of non-use.

To be followed one month after start-up and then semi­annually.

1. Inspect top of heater and drafthood for soot, a
sticky black substance around finned tubes and
"V" baffles, and open flue gas passageways. Any
visible soot should be cleaned for proper opera­tion.

CAUTION: Soot may be combustible. Wet sooted
surfaces completely prior to cleaning. Do not use
steel wire brush.

2. Clean main burners and pilot burner of dust and
lint.

3. Inspect and operate all controls, gas valve and
pressure relief valve (if equipped).

4. Make visual check of the burner and pilot flames.
Flame pattern on the main burner and pilot is illus­trated on page 7. Yellow flame means restriction
of the air openings. Lifting or blowing flame indi­cates high gas pressure. Low flame means low
gas pressure. Should the latter occur, shut the
heater off and contact your gas supplier or quali­fied service agency.

5. On indoor heaters, clean room intake openings to
ensure adequate flow of combustion and ventila­tion air.

CAUTION: Combustion air must not be contaminat­ed by corrosive chemical fumes which can damage
the heater and void the warranty.

3. Your filter may be dirty. If so, backwash or clean
filter. (To tell if your filter is dirty, look to see if the
filter pressure will be higher than usual).

4. The pump may have lost its prime and be running
dry. Check the pressure on the filter. If there is no
pressure; then you are not moving water (or your
gauge is broken). Try to get the pump to run at its
normal flow rate.

POOL & SPA WATER CHEMISTRY

Chemical imbalance can cause severe damage to
your heater and associated equipment. Maintain

your water chemistry according to the chart on page 2.
If the mineral content and dissolved solids in the water
become too high, scale forms inside the heat exchang­er tubes, reducing heater efficiency and damaging the
heater. If the pH drops below 7.2, this will cause cor­rosion of the heat exchanger and severely damage the
heater. Heat exchanger damage resulting from

chemical imbalance is not covered by the warran­ty.

AUTOMATIC CHLORINATORS AND
CHEMICAL FEEDERS

All chemicals must be introduced and completely dilut­ed into the pool or spa water before being circulated
through the heater. Do not place sanitizing chemicals
in the skimmer. High chemical concentrations will
result when the pump is not running (e.g. overnight).

Chlorinators must feed downstream of the heater and
have an anti-siphoning device to prevent chemical
back-up into the heater when the pump is shut off. A
check valve should be installed between the heater
outlet and the chlorinator.

6. Keep area around heater clear and free from com­bustible materials, gasoline and other flammable
and corrosive vapors and liquids.

IF HEATER WILL NOT FIRE:

If you have no electrical power, it may be that your
"circuit breaker" has tripped. Try re-setting it.

If you have electrical power but the heater will not fire
check the following or see Troubleshooting section:

1. The time clock must be in the "ON" position.

See plumbing diagrams on page 24.

NOTE: High chemical concentrates from feeders and

chlorinators that are out of adjustment will cause rapid
corrosion to the heat exchanger. Such damage is not

covered under the warranty.

LO NOx BURNERS

The Lo NOx burners and orifice areas should be
inspected annually. Dirt and debris can affect the
operation of the heater and could damage the burners
or prevent the heater from firing. DO NOT clean the
burners with a wire brush.

8

COLD WEATHER OPERATION

WINTERIZING THE POOL & SPA HEATER

IMPORTANT FREEZE INFORMATION

MODERATE CLIMATE: Heater operation can contin-

e during short-term cold spells. When temperatures

u
are between 0° and 32°F, flow (continuous pump
operation) must be maintained.

CAUTION: Do not use the heater to maintain water
temperatures just above freezing or for freeze protec­tion. When heater is used during freezing weather,
care must be taken to avoid freeze-ups. Continuous
pump operation is a must. Additional protection may
be required. The heater is not warranted against
freeze-ups.

COLD CLIMATE: Prolonged operation with water
temperatures below 50°F is not recommended.
When starting the heater with water temperatures
below 50°F, operate the heater continuously until
higher temperatures are reached. Operating the
heater for prolonged periods with pool water below
50°F can seriously damage the heater, and is not cov­ered by the warranty.

For cold climate areas, please follow the winterizing
procedures listed.

Heaters installed outdoors in freezing climate areas
may be shut down for the winter. Observe the follow­ing procedure for winterizing the heater:

1. Turn off gas valve, manual gas valve, and electri­cal supply to the heater.

. Open drain plug located on the inlet/outlet header,

2

(under water pipes). Remove the heat exchanger
inspection panel on the side opposite water piping
to gain access to the drain plug on the return head­er. Open drain plug on return header.

Return Header

Drain Plug

3. For ASME Heaters only: Disconnect compression

fittings from the pressure switch and return header
that connects to the 1/4" copper tube and allow the
tube to drain.

9

PART TWO
INSTALLATION AND SERVICE INSTRUCTIONS

SECTION 1 - RECEIVING EQUIPMENT

The manufacturer recommends that this manual be reviewed thoroughly before installing your pool/spa heater.
If there are any questions that this manual does not answer, please contact the factory or your local represen­tative.
On receipt of your equipment it is suggested that you visually check for external damage to the carton. If the
carton is damaged, a note should be made on the Bill of Lading when signing for the equipment. Remove the
heater from the carton. If it is damaged, report the damage to the carrier immediately. Save the carton.

These items are shipped inside a box in the carton with the heater:

STANDARD UNIT (POLYMER HEADERS) ASME UNIT (CAST IRON HEADERS)

1. "Pagoda" top 1. "Pagoda" top

2. 2" CPVC union with "O" rings (2) 2. In/Out flanges (2)

3. Plastic pipe finish flange for gas line 3. 1-1/2" flange gaskets (2)

4. Bonding lug with mounting screw 4. 2" flange gaskets (2)
(AFT models only) 5. Flange bolts (4)

6. Pressure relief valve

7. 2" CPVC adapters (2)

8. Plastic pipe finish flange for gas line.

9. Bonding lug with mounting screw.
(AFT models only)

Be sure that you receive the number of packages indicated on the Bill of Lading.

When ordering parts, you must specify the model and serial numbers of the heater. See below for location of
serial number. When ordering under warranty conditions, you must also specify date of installation.

The Model & Serial No.
can also be found inside

the bezel above the display

Model & Serial No.
Located on Rating
Plate

(Alternate Location)

LABEL ON CARTON

Serial No.

10

SECTION 2 - GENERAL SPECIFICATIONS

These heaters are design-certified and tested under the latest requirements of the ANSI Z21.56 / CSA 4.7

tandard for Gas-Fired Pool Heaters. All heaters can be used either indoor or outdoors. The appropriate top

S
designated for each type of use is required. If necessary, the top can be changed at a later date to change from
outdoor to indoor or vice versa. Millivolt heaters contain a self-generating electrical system operating between
.25 and .75 VAC.

Ambient Temperature Rating of Heater Components

illivolt Heater with Honeywell Gas Valve +32°F to +175°F

M
Millivolt Heater with Robertshaw Gas Valve 0°F to +175°F
Electronic Ignition Heater* -32°F to + 175°F
*Requires 120 or 240VAC Power Supply

Atmospheric heaters:

Rated inputs are suitable for up to 2,000 feet elevation. For elevations above 2000 feet, reduce input 4% for
each 1,000 feet above sea level, as high elevation reduces combustion performance.

Lo NOx heaters:

Rated inputs are suitable for up to 5,000 feet elevation. For elevations above 5000 feet, consult the factory.

SECTION 3 - INSTALLATION INSTRUCTIONS

CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California

to cause cancer, birth defects or other reproductive harm.

WARNING: This unit contains refractory ceramic fiber (RCF) insulation in the combustion chamber. RCF, as
manufactured, does not contain respirable crystalline silica. However, following sustained exposure to very
high temperatures (>2192F), the RCF can transform into crystalline silica (cristabolite). The International
Agency for Research on Cancer (IARC) has classified the inhalation of crystalline silica (cristabolite) as car­cinogenic to humans.

When removing the burners or heat exchangers, take precautions to avoid creating airborne dust and avoid
inhaling airborne fibers. When cleaning spills, use wet sweeping or High Efficiency Particulate Air (HEPA)
filtered vacuum to minimize airborne dust. Use feasible engineering controls such as local exhaust ventilation
or dust collecting systems to minimize airborne dust. Wear appropriate personal protective equipment
including gloves, safety glasses with side shields, and appropriate NIOSH certified respiratory protection, to
avoid inhalation of airborne dust and airborne fiber particles.

IMPORTANT NOTICE
These instructions are intended only for the use by qualified personnel, specifically trained and experi­enced in the installation of this type of heating equipment and related system components. Installation

and service personnel may be required by some states to be licensed. If your state is such, be sure your con­tractor bears the appropriate license. Persons not qualified shall not attempt to fix this equipment nor attempt
repairs according to these instructions.

WARNING: Improper installation, adjustment, alteration, service or maintenance may damage the equip-

ment, create a hazard resulting in asphyxiation, explosion or fire, and will void the warranty.

CODE REQUIREMENTS
NOTE: The heater should not be located in an area where possible water leakage will result in damage to the

area adjacent to the heater or to the structure. When such locations cannot be avoided, it is recommended that
a suitable drain pan, with adequate drainage, be installed under the heater. The pan must not restrict combus­tion air flow.

Installation must be in accordance with local codes, or, in the absence of local codes, with the latest edition of
the National Fuel Gas Code, ANSI Z223.1/NFPA54 and National Electrical Code, ANSI/NFPA 70, and for
Canada, the latest edition of CAN/CSA-B149 Installation Codes, and Canadian Electrical Code, CSA C22.1 Part
1 and Part 2.

11

CLEARANCES

ALL HEATERS

or clearances from combustible surfaces, see the

F
chart below.

CLEARANCE FROM

OMBUSTIBLE CONSTRUCTION

C

hen installed according to the listed minimum clear-

W
ances from combustible construction, the pool heater
can still be serviced without removing permanent
construction around the heater.

INDOOR INSTALLATIONS:

Top* - 30” (Drafthood) Back - 6”
Front - Alcove (Open) Right Side - 12” (Water Side)
Vent - 6” Left Side - 6”
Floor** - 0” (Opposite Water Side)

OUTDOOR INSTALLATION:

Top* - Unobstructed (Outdoor Stack)
Top*** - 36” (Stackless Top)
Floor - 0” Right Side - 12” (Water Side)
Back - 6” Left Side - 6”

(Opposite Water Side)

*Clearance from top of vent terminal.
**Do not install on carpeting.

However for ease of servicing, we recommend a clear­ance of at least 24” in the front, and at least 18" on the
water connection side. This will enable the heater to
be serviced in its installed location, that is, without
movement or removal of the heater.

Clearances less than these (6” minimum), may require
removal of the heater to service either the heat
exchanger or the burner tray. In either case, the
heater must be installed in a manner that will enable
the heater to be serviced without removing any struc­ture around the heater.

FLOORING: This heater can be installed on com­bustible flooring.

***Clearance from top of heater.

OUTDOOR HEATER INSTALLATION

These heaters are design-certified for outdoor installation, when equipped with the approved tops designated for
outdoor use.

WARNING: The heater shall not be located in an area where water sprinklers, or other devices, may cause
water to spray through the cabinet louvers and into the heater. This could cause internal rusting or damage
electrical components, and such damage is not covered under warranty.

WARNING: Do not install within 3 feet of a heat pump or an outdoor condensing unit. Strong air intake from
this type of equipment can disturb the combustion process and cause damage or personal injury.

HEATER WITH OUTDOOR STACKLESS TOP

Pagoda Top Installation

1. Insert tabs into keyhole (4 places).

Pagoda Top

Pagoda Top
(Shipped inside

box in heater
carton)

2. Snap tabs into keyholes so as not to pull out.

12

Heaters must not be installed under an overhang of less than three 3 ft from the top of the heater. Three sides

4 ft

Minimum

4 ft

Minimum

1 ft

Minimum

4 ft

Minimum

3 ft

Minimum

10 ft

Minimum

Forced Air Inlet

must be open in the area under the overhang. Roof water drainage must be diverted away from the heaters
installed under overhangs with the use of gutters.

For U.S. installations, the point from where the flue products exit the heater must be a minimum of 4 ft below,
4 ft horizontally from, or 1 ft above any door, window or gravity inlet into any building. The top surface of the
heater shall be at least 3 ft above any forced air inlet, or intake ducts located within 10 ft horizontally.

or installations in Canada, pool heaters shall not be installed with the top of the vent assembly within 10 ft

F

below, or to either side, of any opening into the building. Refer to the latest revisions of CAN/CSA-B149.

For installations in Florida and Texas, that must comply with the Florida or Texas Building Code, follow the
directions on page 14 for the installation of hurricane tie-down brackets for all models.

13

T O

H

B

2

8”

40”

3” Min. Conc.
Pad by others

3” Min. Conc.
Pad by others

Min. Edge
Distance

Min. Edge
Distance

(1)–1/4” x 1-3/4” S.S. Tapcon Bolt & Washer (Field Supplied)
Ea. Pallet Anchor Bracket
Use hole closest to unit (4 total)

(1)–1/4” x 1-3/4” S.S. Tapcon Bolt & Washer (Field Supplied)
Ea. Pallet Anchor Bracket
Use hole closest to unit (4 total)

2” x 6” x 1/8” Pallet
Anchor Bracket (4 Total) (Kit# 011636)

1/4” x 1-3/4” S.S. Tapcon Bolt & Washer (Field Supplied)
NOTE: Use hole closest to unit with
washer overlapping edge of unit.

6”

6”

MODEL # B

206 20”

266 23”

336 26”

06

4

2

FLORIDA AND TEXAS BUILDING CODES

IND SPEED = 150 MPH, 3 SECOND GUST

W

EXPOSURE = C

206/266/336/406 Atmospheric

9”

14

INDOOR HEATER INSTALLATION

The heater is also design-certified for indoor installation when equipped with the approved drafthood.

For Canada, indoor installation is restricted to an enclosure that is not occupied and does not directly commu­nicate with an occupied area. Refer to the latest edition of CAN/CSA-B149 for specific requirements. Locate

eater as close as is practical to a chimney or gas vent. Heater must always be vented to the outside. See Vent

h
Piping section (pg. 18-19) for details. Minimum allowable space is shown on the nameplate.

WARNING: Indoor heaters require a drafthood that must be connected to a vent pipe and properly vented to
the outside. Failure to follow this procedure can cause fire or fatal carbon monoxide poisoning.

OUTDOOR STACK / INDOOR STACK

NOTE: The outdoor and indoor stacks are optional equipment and do not come standard with the heater.

OUTDOOR STACK KIT INCLUDES:

(1) Outdoor stack, painted

(1) Adapter plate

(3) Mounting brackets (clips)

(1) Top panel cover

(2) 1-foot sections of metal tape

(3) Screws

(1) Instructions

Clips

OUTDOOR

STACK

Model Part No. Part No.

206A/207A

266A/267A

336A/337A

406A/407A

009834
009835
009836
009837

INDOOR STACK

009838
009839
009840
009841

INDOOR STACK KIT INCLUDES:

(1) Drafthood, unpainted
(1) Adapter plate
(3) Mounting brackets (clips)
(3) Screws
(1) Instructions

Clips

** REFER TO INSTALLATION INSTRUCTIONS

INSIDE BOX FOR INSTRUCTIONS ON HOW TO
INSTALL OUTDOOR/INDOOR STACK.

15

SPECIFICATIONS AND DIMENSIONS

B

C

INDOOR

DRAFTHOOD

38"

13-1/4"

G

AS

CONNECTION

J

A

26-5/8"

(28-5/8" ASME)

32-11/16"

ELECTRICAL

CONNECTION

40"

STACKLESS

OUTDOOR TOP

2

8"

4-3/8"

(3-3/8" ASME)

8-7/8"

(

6-5/8" ASME)

D

10

"

FLUE

L

C

Residential, Copper Heat Exchanger

Heater Model

BTUH

Input

(000)

(A)

Cabinet

Width

(B) Flue

Dia.

(C ) Indoor

Drafthood

(D) (J) Min.

Gas

Conn.

Water
Conn.

Standard

Heater

w/Stackless

Top

Indoor

Drafthood

P-R206A-EN-C 199.5

20" 6" 61-5/8" 10.0" 11 -3/ 4" 3 /4" 2" 187

P-R266A-EN-C 266.0

23" 7" 62" 11.5" 11" 3/4" 2" 210

P-R336A-EN-C 332.5

26" 8" 63" 13.0" 10-5/8" 3/4" 2" 230

P-R406A-EN-C 399.0

29" 9" 64-9/16" 14.5" 12-1/8" 3/4" 2" 249

Residential, Cupro Nickel Heat Exchanger

Heater Model

BTUH

Input

(000)

(A)

Cabinet

Width

(B) Flue

Dia.

(C ) Indoor

Drafthood

(D) (J) Min.

Gas

Conn.

Water
Conn.

Standard

Heater

w/Stackless

Top

Indoor

Drafthood

P-R206A-EN-X 180.0

20" 6" 61-5/8" 10.0" 11 -3/ 4" 3 /4" 2" 187

P-R266A-EN-X 240.0

23" 7" 62" 11.5" 11" 3/4" 2" 210

P-R336A-EN-X 300.0

26" 8" 63" 13.0" 10-5/8" 3/4" 2" 230

P-R406A-EN-X 360.0

29" 9" 64-9/16" 14.5" 12-1/8" 3/4" 2" 249

Commercial, ASME Copper or Cupro Nickel

Heater Model

BTUH

Input

(000)

(A)

Cabinet

Width

(B) Flue

Dia.

(C ) Indoor

Drafthood

(D) (J) Min.

Gas

Conn.

Water
Conn.

ASME
Heater

w/Stackless

Top

Indoor

Drafthood

C-R206A-EN-(C or X) 199.5

20" 6" 61-5/8" 10.0" 11 -3/ 4" 3 /4" 2"

C-R266A-EN-(C or X) 266.0

23" 7" 62" 11.5" 11" 3/4" 2"

C-R336A-EN-(C orX) 332.5

26" 8" 63" 13.0" 10-5/8" 3/4" 2"

C-R406A-EN-(C or X) 399.0

29" 9" 64-9/16" 14.5" 12-1/8" 3/4" 2"

Designation for a AFT heater using propane gas is “EP”; a AFT heater using natural gas is “EN”.
Designation for a Millivolt heater using propane gas is “MP”; a Millivolt heater using natural gas is “MN”.
Prefix “C” is for cast iron (ASME) headers; “P” is for plastic (polymer) headers.
Suffix “X” is for cupro-nickel tubing; “C” is for copper tubing.
EXAMPLE: P-R406A-EN-X = Plastic headers, 406 model size, AFT, natural gas, cupro-nickel.
Reduce input 4% for each 1000 ft above sea level when installed above 2000 ft elevation.
For Canada, no de-rating is required for elevations up to 4500 ft
Plastic (polymer) headers cannot be used for ASME installations.
*Note: For outdoor stack, use J dimension in the table above for appropriate size PLUS six (6) inches

Shipping Weight (lbs)

Shipping Weight (lbs)

Shipping Weight (lbs)

14
16
19
21

14
16
19
21

206 14
229 16
249 19
268 21

ATMOSPHERIC UNITS

Amp Draw

120 Volt 240 Volt

AFT 4 2

*

16

B

C

I

NDOOR

DRAFTHOOD

31-13/16"

7-3/4"

G

AS

CONNECTION

J

A

20-1/2"

(

22-1/2" ASME)

34”

STAC KLE SS

OUTDOOR

TOP

28”

26-1/2”

ELECTRICAL
CONNECTION

4

-3/8”

(

3-3/8 ” ASM E)

8-7/8”

(6-5/8” ASME)

D

10

"

FLUE

L

C

SPECIFICATIONS AND DIMENSIONS

O NOx UNITS

L

Amp Draw

120 Volt 240 Volt

6 3

*

Heater

Model

BTUH

Input
(000)

(A)

Cabinet

Width

(B)

Flue

Dia.

(C)

Indoor

Drafthood

R207A 199.5 20” 6” 55-5/8” 10.0” 11-3/4” 3/4” 2” 174 193 14

R267A 266.0 23” 7” 56” 11.5” 11” 3/4” 2” 197 216 16

(D)

(J)

Min. Gas

Conn.

Water
Conn.

w/Stackless

R337A 332.5 26” 8” 57” 13.0” 10-5/8” 3/4” 2” 219 238 19

R407A 399.0 29” 9” 58-1/2” 14.5” 12-1/8” 3/4” 2” 237 256 21

Designation for a AFT heater using natural gas is “EN”.
Prefix “C” is for cast iron (ASME) headers; “P” is for plastic (polymer) headers.
Suffix “C” is for copper tubing.
EXAMPLE: P-R407A-EN-C = Plastic headers, 407 model size, AFT, natural gas, copper.
For altitudes above 5,000 ft., consult the factory.
For Canada, no de-rating is required for elevations up to 4500 ft.
Plastic (polymer) headers cannot be used for ASME installations.
*Note: For outdoor stack, use J dimension in the table above for appropriate size PLUS six (6) inches.

17

Shipping Weights (lbs)

Standard

Heater

ASME

Heater

w/Stackless

Top

Top

Indoor

Draft-

hood