Raypak 206A, 266, 266A, 336A, 399 User Manual

...

INSTALLATION AND OPERATION MANUAL

Gas-Fired Pool and Spa Heater

Brass ASME and Polymer Atmospheric Heat Exchanger Models 206A, 266, 266A, 336A, 399, and 406A

WARNING: If the information in the instructions is not followed exactly, a re or explosion may result

causing property damage, personal injury or death.

- Do not store or use gasoline or other flammable vapors and liquids or other combustible materials in the vicinity of this or any other appliance. To do so may result in an explosion or fire.

- 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.

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

Catalog No. 6000.59AJ

E󰀨ective: 03-02-20 Replaces: 12-16-19 P/N 241236 Rev. 36

QUICK START GUIDE

CLEARANCES

 Space required: See page 12.

 Minimum and service clearances: See page 7 for

clearances table. Note that local codes prevail.

PIPING

 Pressure relief valve: See page 20 for recommended

PRV orientation.

 Flow rates: See page 17 for ow rate values.

GAS

 Distance to regulator (pipe lengths) and gas inlet

sizes: See page 17.

 Required pressure for Natural Gas:

Min = 6" WC, Max = 10.5" WC

 Required pressure for Propane Gas:

Min = 12" WC, Max = 13" WC

 Sediment trap is required for all installations.

See page 15.

WATER CHEMISTRY

 Water chemistry requirements: See page 5.

POWER

 Supply voltage: See page 23 for acceptable input

voltages.

VENTING

 Materials: See pages 11 and 14.

 D-2 Power Vent Kit: See page 14.

 Indoor Stack: See page 11.

CONTROLS INTERFACE

 Wiring diagrams: See page 24 and 25.

 User interface: See pages 26 and 27.

 Remote operation: See page 30.

Revision 36 reects the following changes:

Removed from illustration items 19-M and 20-M on page 46. Updated parts list items 9-C with service kit 018304F on page 48. Added item 1-M service kit 018297F on page 49. Updated items 11-HM, 28-HM and 6-M on page 49. Removed items 19-M and 20-M on page 49. Updated items 4-S and 9-S on page 50.

CONTENTS

1. WARNINGS ............................................................. 4

Pay Attention to These Terms ................................. 4

2. WATER CHEMISTRY ............................................. 5

Automatic Chlorinators and Chemical Feeders....... 5

3. BEFORE INSTALLATION ...................................... 6

Receiving equipment............................................... 6

Rating and certications .......................................... 6

Elevation ................................................................. 6

Ambient Temperature Rating .................................. 6

4. INSTALLATION ....................................................... 7

Installation Codes.................................................... 7

Clearances .............................................................. 7

Outdoor Heater Installation ..................................... 8

Combustion and Ventilation Air ............................. 11

Vent Piping ............................................................ 14

D-2 Power Vent Kit ................................................ 14

Gas Supply Connections....................................... 15

Flow Rate .............................................................. 17

ProTek Shield Assembly........................................ 18

Unitherm Governor Operation ............................... 19

Internal Automatic Bypass Valve ........................... 19

External Auxiliary Bypass Valve ............................ 19

Auxiliary Bypass Valve Adjustment .......................20

Pressure Relief Valve Installation .......................... 20

Heat Exchanger Reversal ..................................... 20

Plumbing Diagrams ............................................... 21

6. WIRING DIAGRAM - MILLIVOLT ....................... 24

7. WIRING DIAGRAM - DIGITAL ............................ 25

8. CONTROLS ........................................................... 26

Control Panel Removal ......................................... 26

Control Adjustments - Millivolt Models ..................26

Control Adjustments – Digital Models ...................27

Operation .............................................................. 27

Status and Diagnostics ......................................... 29

Remote Control Wiring - Digital Models Only........ 30

9. OPERATING INSTRUCTIONS ............................ 36

Before Start-Up ..................................................... 36

Start-Up Procedures ............................................. 36

Visual inspection ...................................................36

Water Pressure Switch .......................................... 36

10. MAINTENANCE AND CARE ............................... 39

Cold Weather Operation .......................................39

11. TROUBLESHOOTING ......................................... 40

Millivolt - Flow Chart .............................................. 41

Digital - Flow Chart................................................ 42

Control Logic - Flow Chart - Digital ....................... 43

12. REPLACEMENT PARTS ..................................... 44

13. ILLUSTRATED PARTS LIST .............................. 45

5. ELECTRICAL WIRING ......................................... 22

Millivolt Models ("M" su󰀩x) ................................... 22

Digital Models ("E" su󰀩x) ...................................... 22

Electrical Power Draw ........................................... 23

Transformer Wiring ...............................................23

NOTE: ProTek Shield Adapter and assembly shown for ASME models in Figures, but not available until March 2020.

1. WARNINGS

Pay Attention to These Terms

DANGER

WARNING

CAUTION

NOTE

DANGER: Failure to install the drafthood on indoor

installation and properly vent the heater to the outdoors as outlined in the venting section of this manual can result in unsafe operation of the heater. To avoid the risk

of re, explosion, or asphyxiation from carbon monoxide,

never operate this heater unless it is properly vented and has an adequate air supply for proper operation. Be sure to inspect the vent system for proper installation at initial start-up, and at least annually thereafter. Refer to the venting section of this manual for more information regarding vent system inspections.

Indicates the presence of immediate hazards which will cause severe personal injury, death or substantial property damage if ignored.

Indicates the presence of hazards or unsafe practices which could cause severe personal injury, death or substantial property damage if ignored.

Indicates the presence of hazards or unsafe practices which could cause minor personal injury or product or property damage if ignored.

CAUTION used without the warning alert symbol indicates a potentially hazardous condition which could cause minor personal injury or product or property damage if ignored.

Indicates special instructions on installation, operation, or maintenance which are important but not related to personal injury hazards.

WARNING: Improper installation, adjustment,

alteration, service, or maintenance can cause property damage, personal injury or loss of life. Installation

and service must be performed by a qualied installer,

service agency, or the gas supplier.

WARNING: Gasoline, as well as other ammable

materials and liquids (adhesives, solvents, etc.), and the vapors they produce, are extremely dangerous. Do

not handle, use, or store gasoline or other ammable or

combustible materials in the vicinity of a heater.

WARNING: To minimize the possibility of improper

operation, serious personal injury, re, or damage to the heater:

• Always keep the area around the heater free of

combustible materials, gasoline, and other ammable

liquids and vapors.

• Heater should never be covered or have any blockage

to the ow of fresh air to the heater.

WARNING: This unit contains refractory ceramic

ber (RCF) insulation in the combustion chamber. RCF,

as manufactured, does not contain respirable crystalline silica. However, following sustained exposure to very high temperatures [>2192°F (1200°C)], the RCF can transform into crystalline silica (cristabolite). The International Agency for Research on Cancer (IARC) has

classied 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 bers. When cleaning spills, use wet sweeping or High E󰀩ciency Particulate Air (HEPA) ltered 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 certied respiratory protection, to avoid inhalation of airborne dust and airborne ber

particles.

WARNING: Both natural gas and propane have

an odorant added to aid in detecting a gas leak. Some people may not physically be able to smell or recognize this odorant. If you are unsure or unfamiliar with the smell of natural gas or propane, ask your local gas supplier. Other conditions, such as “odorant fade,” which causes the odorant to diminish in intensity, can

also hide, camouage, or otherwise make detecting a gas leak by smell more di󰀩cult.

WARNING: UL-recognized fuel gas detectors are

recommended in all enclosed propane and natural gas applications wherein there is a potential for an explosive mixture of fuel gas to accumulate and their installation should be in accordance with the detector manufacturer’s recommendations and/or local laws, rules, regulations, or customs.

WARNING: Do not install within 3 feet (0.9 m) 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.

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 void the warranty.

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 rst

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.

CAUTION: Propane gas is heavier than air and will

settle on the ground. Since propane can accumulate in

conned areas, extra care should be exercised when

lighting propane heaters.

2. WATER CHEMISTRY

NOTE: Corrosive water voids all warranties.

Chemical imbalance can cause severe damage to your heater and associated equipment. Maintain your water chemistry according to Table A. If the mineral content and dissolved solids in the water become too high, scale forms inside the heat exchanger tubes, reducing heater e󰀩ciency 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.

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.

CAUTION: Free chlorine must not exceed 5 ppm

which can damage the heater and is not covered under warranty.

• 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.

• 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.

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 backup into the heater when the pump is shut o󰀨.

See "Plumbing Diagrams" on page 21.

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.

Recommended Level(s) Fiberglass Pools Fiberglass Spas Other Pool and Spa Types

Water Temperature 68-88°F (20-31°C) 89-104°F (31-40°C) 68-104°F (20-40°C)

pH 7.3-7.4 7.3-7.4 7.6-7.8

Total Alkalinity (ppm) 120-150 120-150 80-120

Calcium Hardness (ppm) 200-300 150-200 200-400

Salt (ppm) 4500 Maximum 4500 Maximum 4500 Maximum

Free Chlorine (ppm)* 2-3 2-3 2-3

Total Dissolved Solids (ppm) 3000 Maximum** 3000 Maximum** 3000 Maximum**

*Free Chlorine MUST NOT EXCEED 5 ppm! **In saltwater chlorinated pools, the total TDS can be as high as 6000 ppm.

Table A. Pool Water Chemistry

3. BEFORE INSTALLATION

Receiving equipment

The manufacturer recommends that this manual be reviewed thoroughly before installing the 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 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)

1. “Pagoda” top

2. 2" CPVC union half with "O" rings (2)

3. Plastic pipe finish flange for gas line

4. Bonding lug with mounting screw (Digital) models only)

ASME Unit (BRASS HEADERS)

1. “Pagoda” top

2. 2" CPVC union half with "O" rings (2)

3. Plastic pipe finish flange for gas line

4. Bonding lug with mounting screw (Digital models only)

5. Pressure Relief Valve (PRV)

6. Protek Shield™ Adapter with Protek Shield Assy,

O-ring and wing nut (March 2020 onward)

THE MODEL AND SERIAL NO. CAN ALSO BE FOUND INSIDE THE BEZEL ABOVE THE DISPLAY

Rating and certications

These heaters are design-certied and tested under the latest requirements of the ANSI Z21.56 / CSA 4.7 Standard for Gas-Fired Pool Heaters. All heaters can be used either indoor or outdoors when appropiate venting is installed. The appropriate top 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.

All brass header units have heat exchangers which are ASME-certied (BPV Section IV part HLW) and are registered with National Board.

Elevation

Rated inputs are suitable for up to 2,000 ft (610 m) elevation. For elevations above 2,000 ft (610 m), reduce input 4% for each 1,000 ft (305 m) above sea level, as high elevation reduces combustion performance.

Ambient Temperature Rating

Heater Components

Millivolt Heater with Honeywell Gas Valve 32°F to 175°F (0°C to 79°C)

Millivolt Heater with Robertshaw Gas Valve 0°F to 175°F (-18°C to 79°C)

Electronic Ignition Heater* -32°F to 175°F (-35°C to 79°C)

*Requires 120 or 240VAC, 1 Ph, 60 Hz Power Supply

MODEL AND SERIAL NO. LOCATED ON RATING PLATE

Figure 1. Rating Plate Location

F10640-1

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

4. INSTALLATION

WARNING: This unit contains refractory ceramic

ber (RCF) insulation in the combustion chamber. RCF,

as manufactured, does not contain respirable crystalline silica. However, following sustained exposure to very high temperatures (>2192°F), the RCF can transform into crystalline silica (cristabolite). The International

Agency for Research on Cancer (IARC) has classied

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 bers. When cleaning spills, use wet sweeping or High E󰀩ciency Particulate Air (HEPA) ltered vacuum to minimize airborne dust. Use feasible

appropriate NIOSH certied respiratory protection, to avoid inhalation of airborne dust and airborne ber

particles.

IMPORTANT NOTICE: These instructions are intended

only for the use by qualied personnel, specically

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 qualied shall not attempt to x the equipment nor

attempt repairs according to these instructions.

WARNING: Improper installation, adjustment,

alteration, service or maintenance may damage the equipment, create a hazard resulting in asphyxiation,

explosion or re, and will void the warranty.

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 ow.

Installation Codes

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.

Clearances

All Heaters

For indoor and outdoor clearances from combustible surfaces, see the chart below.

Location Indoor Installation

Top * 30" (762 mm) Drafthood

Front Alcove (Open)

Vent 6" (152 mm)

Floor ** 0"

Back 6" (152 mm)

Right Side 12" (305 mm) Water Side

Left Side 6" (152 mm) Opposite Water Side

Location Outdoor Installation

Top * Unobstructed (Outdoor Stack)

Top *** 36" (914 mm) (Stackless Top)

Floor 0"

Back 6" (152 mm)

Right Side 12" (305 mm) Water Side

Left Side 6" (152 mm) Opposite Water Side

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

Table B. Minimum Clearances from Combustible Surfaces

When installed according to the listed minimum clearances from combustible construction, the pool heater can still be serviced without removing permanent construction around the heater.

However for ease of servicing, we recommend a clearance of at least 24" (610 mm) in the front, and at least 18" (457 mm) 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.

Description Location

Back 9 (229)

a. 3-1/2" (89 mm) thick

masonry walls without ventilated air space

b. 1/2" (13 mm)insulation

board over 1" (25 mm) glass ber or mineral wool batts

c. 0.024 sheet metal over

1" (25 mm) glass ber or mineral wool batts reinforced with wire on rear face with ventilated air space

d. 3-1/2" (89 mm) thick

masonry wall with ventilated air space

e. 0.024 sheet metal with

ventilated air space

f. 1/2" (13 mm) thick

insulation board with ventilated air space

g. 0.024 sheet metal with

ventilated air space over

0.024 sheet metal with ventilated air space.

h. 1" (25 mm) glass ber

or mineral wool batts sandwiched between two sheets 0.024 sheet metal with ventilated air space

Derived from National Fuel Gas Code, Table 10.2.3

Table C. Reduction of Clearances to Protected Surfaces

Right 9 (229) Left 9 (229) Vent 5 (127) Indoor Top 39 (991) Outdoor Top Unobstructed Back 6 (152) Right 6 (152) Left 6 (152) Vent 3 (76) Indoor Top 30 (762) Outdoor Top Unobstructed Back 4 (102) Right 4 (102) Left 4 (102) Vent 3 (76) Indoor Top 24 (610) Outdoor Top Unobstructed Back 6 (152) Right 6 (152) Left 6 (152) Vent 6 (152) Indoor Top 39 (991) Outdoor Top Unobstructed Back 4 (102) Right 4 (102) Left 4 (102) Vent 2 (51) Indoor Top 24 (610) Outdoor Top Unobstructed Back 4 (102) Right 4 (102) Left 4 (102) Vent 3 (76) Indoor Top 24 (610) Outdoor Top Unobstructed Back 4 (102) Right 4 (102) Left 4 (102) Vent 3 (76) Indoor Top 24 (610) Outdoor Top Unobstructed Back 4 (102) Right 4 (102) Left 4 (102) Vent 3 (76) Indoor Top 24 (610) Outdoor Top Unobstructed

Distance

in. (mm)

Clearances less than these 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 ooring. The combustible clearances listed can be reduced by protecting the exposed combustible surfaces as shown in

Table C.

Outdoor Heater Installation

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

WARNING: The heater shall not be located in an

WARNING: Do not install within 3' (0.9 m) 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.

PAGODA TOP INSTALLATION

F10646-1

Figure 2. Heater with Outdoor Stackless Top

4' (1.2 m) Minimum

4' (1.2 m)

Minimum

4' (1.2 m)

Minimum

3' (0.9 m) Minimum

10' (3 m) Minimum

Forced Air Inlet

Figure 3. Minimum Distances to Building Openings from

Where Flue Products Exit the Boiler

1' (0.3 m)

Minimum

Heaters must not be installed under an overhang of less than 3' (0.9 m) from the top of the heater. Three sides 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 ue products exit the heater must be a minimum of 4' (1.2 m) below, 4' (1.2 m) horizontally from, or 1' (0.3 m) above any door, window or gravity inlet into any building. The top surface of the heater shall be at least 3' (0.9 m) above any forced air inlet, or intake ducts located within 10' (3 m) horizontally.

For Canadian installations, pool heaters shall not be installed with the top of the vent assembly within 10' (3 m) below, or to either side, of any opening into the building. Refer to the latest revisions of CAN/CSA-B149.

A minimum of 6' (1.8 m) is required from the heater to an inside corner wall for proper outdoor venting.

For installations in Florida and Texas, that must comply with the Florida or Texas Building Code, follow the directions shown in Figure 5 for the installation of hurricane tie-down brackets for all models.

Indoor Heater Installation

The heater is also design-certied 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 specic requirements. Locate heater as close as is practical to a chimney or gas vent. Heater must always be vented to the outside. See section "Vent Piping" on page 14 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

re or fatal carbon monoxide poisoning.

Pagoda Top Installation

1. Insert tabs into keyhole (4 places). See Figure 4, detail A.

2. Snap tabs into keyholes so as not to pull out. See Figure 4, detail B.

DETAIL A DETAIL B

OUTDOOR TOP

(SHIPPED LOOSE WITH HEATER)

Figure 4. Outdoor Top Installation

FLORIDA AND TEXAS BUILDING CODES

WIND SPEED = 150 MPH, 3 SECOND GUST

Min. Edge

Model

in. (mm)

206A 20 (508)

266/266A 23 (584)

336A 26 (660)

399/406A 29 (737)

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

EXPOSURE = C

38"

(965 mm)

F10648

28"

(711 mm)

3" (76 mm)

Min. Conc.

Pad by others

Min. Edge

Distance

(152 mm)

(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)

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

Distance

(152 mm)

3" (76 mm) Min. Conc.

Pad by others

TOH

F10646-2

(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)

Figure 5. Hurricane Tie-Down Bracket Installation

Outdoor and Indoor Stacks

The outdoor and indoor stacks are optional equipment and do not come standard with the heater. Refer to installation instructions inside box for instructions on how to install outdoor/indoor stack.

Model Outdoor Stack Indoor Stack

206A 009834 009838

266/266A 009835 009839

336A 009836 009840

399/406A 009837 009841

Table D. Outdoor and Indoor Stack Kit Number

OUTDOOR STACK KIT

(1) Outdoor, painted

(1) Adapter plate

(3) Mounting brackets (clips)

(1) Top panel cover

(2) 1-foot sections of metal tape

(3) Screws

(1) Instructions

Clips

Combustion and Ventilation Air

Indoor Units Only

The heater must have both combustion and ventilation air. The minimum requirements are listed in the latest edition of the National Fuel Gas Code (U.S. ANSI Z223.1 or Canada CAN/CSA-B149) and any local codes that may have jurisdiction. The most common approach is the "2-opening" method, with combustion air opening no more than 12" from the floor and the ventilation opening no more than 12" from the ceiling. For opening sizes using this method, see below.

All Air from Inside the Building:

Each opening shall have a minimum net free area as noted:

Model Sq. in. (m2)

206A 200 (0.13)

266/266A 266 (0.17)

336A 333 (0.21)

399/406A 399 (0.26)

Table E. Opening Minimum Net Free Requirements -

Indoor Air

All Air from Outdoors:

When air is supplied directly from outside the building, each opening shall have a minimum net free area as noted:

Figure 6. Outdoor Stack Kit Components

NOTE: The outdoor drafthood kit does not require any additional vent pipe for proper operation. This drafthood functions as the vent termination.

INDOOR STACK KIT

(1) Drafthood, unpainted

(1) Adapter plate

(3) Mounting brackets (clips)

(3) Screws

(1) Instructions

Clips

Figure 7. Indoor Stack Kit Components

Model

206A 50 (0.03) 75 (0.05) 100 (0.06)

266/266A 67 (0.04) 101 (0.06) 134 (0.09)

336A 84 (0.05) 126 (0.08) 168 (0.11)

399/406A 100 (0.06) 150 (0.1) 200 (0.13)

Table F. Opening Minimum Net Free Requirements -

CAUTION: Combustion air must not be contaminated

by corrosive chemical fumes which can damage the heater. Such damage will not be covered by the warranty.

Unrestricted

Opening

sq. in. (m2)

Outdoor Air

Typical Screened or

Louvered Opening

sq. in. (m2)

Typical Screened

and Louvered

Opening

sq. in. (m2)

Specications and Dimensions

F10646-4

Amp Draw

120 VAC, 1Ph, 60Hz 240 VAC, 1Ph, 60Hz

4 2

Indoor

Drafthood

38”

(965 mm)

13-1/4”

(337 mm)

gas

connection

Figure 8. Front View

Flue

10"

28"

(254 mm)

8-7/8"

(225 mm)

6-5/8" ASME

(168 mm ASME)

40"

(1016 mm)

Stackless

Outdoor Top

26-5/8”

(676 mm)

28-5/8” ASME

(727 mm ASME)

F10646

32-11/16"

(830 mm) Electrical

Connection

4-3/8"

(111 mm)

(3-3/8" ASME)

(86 mm ASME)

(711 mm)

Figure 9. Side View

*Note: For outdoor stack, use J dimension in the following tables for appropriate size plus 6 inches (152 mm).

Shipping Weights

Standard

Heater

w/Stackless

Top

187 (85)

210 (95)

230

(104)

249

(113)

Heater

Mode

206A

266/266A

336A

399/406A

BTUH

Input (000)

(kw)

199.5

(58.4)

266.0 (77.9)

332.5 (97.4)

399

(116.9)

Residential - Copper Heat Exchanger

(A)

Cabinet

Width

in. (mm)

(508)

(584)

(660)

(737)

(B)

Flue

Dia.

in. (mm)

(152)

(178)

(203)

(229)

(C)

Indoor

Drafthood

in. (mm)

61-5/8 (1565)

(1575)

(1600)

64-9/16

(1640)

in. (mm)

10.0

(254)

11.5

(292)

(330)

14.5

(368)

(D)

(J)*

in. (mm)

11-3/4

(298)

(279)

10-5/8

(270)

12-1/8

(309)

Gas

Conn.

in.

3/4 2

Water Conn.

in.

Table G. Residential - Copper Heater Specications and Dimensions

lbs (kg)

Indoor

Draft-

hood

(6.4)

(7.3)

(8.6)

(9.5)

Residential - Cupronickel Heat Exchanger

Shipping Weights

lbs (kg)

Heater

Mode

P-_206A-EN-X

P-_266A-EN-X

P-_336A-EN-X

P-_406A-EN-X

Heater

Mode

BTUH

Input (000)

(kw)

180.0 (52.7)

240.0 (70.3)

300.0 (87.9)

360.0

(105.5)

Table H. Residential - Cupronickel Heater Specication and Dimensions

Commercial - ASME Copper or Cupronickel Heat Exchanger

BTUH

Input

(000)

(kw)

(A)

Cabinet

Width

in. (mm)

(508)

(584)

(660)

(737)

(A)

Cabinet

Width

in. (mm)

(B)

Flue

Dia.

in. (mm)

(152)

(178)

(203)

(229)

(B)

Flue

Dia.

in. (mm)

(C)

Indoor

Drafthood

in. (mm)

61-5/8 (1565)

(1575)

(1600)

64-9/16

(1640)

(C)

Indoor

Drafthood

in. (mm)

(D)

in.

(mm)

10.0

(254)

11.5

(292)

(330)

14.5

(368)

(D)

in.

(mm)

(J)*

in.

(mm)

11-3/4

(298)

(279)

10-5/8

(270)

12-1/8

(309)

(J)*

in.

(mm)

Gas

Conn.

in.

3/4 2

Gas

Conn.

in.

Water Conn.

in.

Water Conn.

in.

Standard

Heater

w/Stackless

Top

187 (85)

210 (95)

230

(104)

249

(113)

Shipping Weights

lbs (kg)

ASME

Heater

w/Stackless

Top

Indoor

Draft-

hood

(6.4)

(7.3)

(8.6)

(9.5)

Indoor

Draft-

hood

B-_206A-EN-(C or X)

B-_266A-EN-(C or X)

B-_336A-EN-(C or X)

B-_406A-EN-(C or X)

199.5 (58.4)

266.0 (77.9)

332.5 (97.4)

399

(116.9)

(508)

(584)

(660)

(737)

Table I. Commercial - Heater Specifications and Dimensions

(152)

(178)

(203)

(229)

61-5/8 (1565)

(1575)

(1600)

64-9/16

(1640)

10.0

(254)

11.5

(292)

(330)

14.5

(368)

11-3/4

(298)

(279)

10-5/8

(270)

12-1/8

(309)

3/4 2

206 (94)

229

(104)

249

(113)

268

(122)

(6.4)

(7.3)

(8.6)

(9.5)

Vent Piping

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

re or fatal carbon monoxide poisoning.

Flue materials must be certied to CATEGORY I or better. Type “B” double-wall or equivalent vent pipe is recommended. A draft of -0.01" to -0.08" WC must be maintained. However single-wall metal vent pipe may be used as specied in the latest edition of the National Flue Gas Code, ANSI Z223.1 (Canada - CAN/CSA-B149).

When properly installed outdoors, only the outdoor stackless top (provided) is required. If installed indoors, a drafthood is required, connected to a CATEGORY I (a heater that operates with a non-positive vent static pressure and a vent gas temperature that avoids excessive condensate production in the vent.) vent per the National Fuel Gas Code and local requirements.

Vent piping the same size as the drafthood outlet is recommended, however, when the total vent height is at least 10 ft (3 m) (drafthood relief opening to vent terminal), the vent pipe size may be reduced by no more than one (1) size as specied in Chapter 13 of the National Fuel Gas Code, ANSI Z223.1 (Canada - CAN/CSA-B149).

As much as possible, avoid long horizontal runs of vent pipe and too many elbows. If installation requires horizontal runs, the vent pipe must have a minimum of 1/4 in. per ft rise (20.8 mm per meter rise) and should be supported at not more than ve foot (1.5 m) intervals.

Plumber's tape, criss-crossed, will serve to space both horizontal and vertical piping. Gas vents supported only by the ashing and extending above the roof more than 5 ft (1.5 m) should be securely guyed or braced to withstand snow and wind loads. We recommend use of insulated vent pipe spacers through the roof and walls.

D-2 Power Vent Kit

Another option for an installation that requires horizontal runs is the D-2 power vent kit option.

Model 120 VAC P/N 240 VAC P/N

206A 010744 009832

266/266A 010744 009832

336A 010745 009833

399/406A 010745 009833

Table J. Power Vent Kit Part Numbers

NOTE: The D-2 Power Vent operates with a positive vent static pressure and with a vent gas temperature that prevents excessive condensate production in the vent, and as such, is a CATEGORY III appliance. For more information consult the D-2 Power Vent manual, Catalog no. 6000.57.1. CATEGORY I vent material such as B-vent must not be used under CATEGORY III conditions.

For protection against rain or blockage by snow, the vent pipe must terminate with a vent cap which complies with the local codes or, in the absence of such codes, to the latest edition of the National Fuel Gas Code, ANSI Z223.1 (Canada - CAN/CSA-B149).

The discharge opening must be a minimum of 2' (0.6 m) vertically from the roof surface and at least 2' (0.6 m) higher than any part of the building within 8' (2.4 m). Vent stack shall be at least 5' (1.5 m) in vertical height above the drafthood outlet. The vent cap location shall have a minimum clearance of 4' (1.2 m) horizontally from, and in no case below, unless a 4' (1.2 m) horizontal distance is maintained, from electric meters, gas meters, regulators and relief equipment.

The weight of the vent stack or chimney must not rest on the heater drafthood. Support must be provided in compliance with applicable codes. The heater top and drafthood must be readily removable for maintenance and inspection. Vent pipe should be adequately supported to maintain proper clearances from combustible construction.

Figure 10. D-2 Power Vent Option

The power vent system is a fan-assisted vent system designed for use on models 206A-406A.

The power vent system, when installed as directed, is capable of operating in applications such as through-thewall venting with reduced horizontal and vertical vent pipe sizes in new and current installations. The unit is factorywired for 240 VAC, with capability of eld-rewiring for 120

VAC.

For more information consult the D-2 Power Vent manual, (Catalog No. 6000.57.1).

2' MIN

8' (2.4 m)

MANUAL SHUT-OFF VALVE (Field supplied)

(76 mm)

(0.6 m)

OR LESS

VENT PIPE

DRAFT HOOD

VENT CAP

2' MIN

(0.6 m)

5' MIN

(1.5 m)

Gas piping must have a sediment trap ahead of the heater gas controls, and a manual shut-o󰀨 valve located outside the heater jacket. All gas piping should be tested after installation in accordance with local codes.

CAUTION: The heater and its manual shut-o󰀨 valve

must be disconnected from the gas supply during any pressure testing of that system at test pressures in excess of 1/2 psi (3.45 kPa). Dissipate test pressure in the gas supply line before reconnecting the heater and

its manual shut o󰀨 valve to gas supply line. FAILURE

TO FOLLOW THIS PROCEDURE MAY DAMAGE THE GAS VALVE. OVER PRESSURIZED GAS VALVES ARE NOT COVERED BY WARRANTY. The heater and its gas connections shall be leak tested before placing the appliance in operation. Use soapy water for leak test. DO

NOT use open ame.

Supply Pressure

CAUTION: Do not use teon tape on gas line pipe

thread. Only sealant tape or a pipe compound rated for use with natural and propane gases is recommended. Apply sparingly only on male pipe ends, leaving the two end threads bare.

Figure 11. Venting Clearances

NOTE: With venting application of two or more heaters, contact the factory.

Gas Supply Connections

3" MIN

Typical

HEATER

GAS INLET

FINISH FLANGE

UNION

(Field supplied)

SEDIMENT TRAP (Field supplied)

HEATER JACKET

GAS VALVE

A minimum of 6 in. WC and a maximum of 10.5 in. WC upstream pressure under load and no-load conditions must be provided for natural gas. A minimum of 12 in. WC and a maximum of 13 in. WC are required for propane gas under load and no-load conditions.

Gas Pressure Regulator

The gas pressure regulator is preset at 4.0 in. WC for natural gas, and 10.5 in. WC. for propane gas. The pressure at the gas valve, taken with a manometer, should be about 4.0 in. WC natural gas and 10.5 in. WC propane gas. If an adjustment is needed, remove seal and turn adjustment screw clockwise counter-clockwise

MANUAL

SHUT-OFF

VALV E

UNION

to decrease pressure.

to increase pressure or

Figure 12. Gas Supply Plumbing

F10640-2

Figure 13. Manual Shut-O󰀨 Valve Installation

Gas Pressure Adjustment Locations

Millivolt Gas Valve

GAS PRESSURE ADJUSTMENT

Figure 14. Robertshaw 7000 (Heater Models 206A - 406A)

Electronic Ignition Gas Valves

GAS PRESSURE ADJUSTMENT

Figure 15. Honeywell VR8340 (Heater Models 206A - 406A)

GAS PRESSURE ADJUSTMENT

Figure 17. Robertshaw 7000 BDER (Heater Models 266A -

336A)

GAS PRESSURE ADJUSTMENT

Figure 16. Robertshaw 7200 (Heater Model 206A)

Figure 18. Robertshaw 7000 DERHC (Heater Model 406A)

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