Lochinvar SNR126-065, SNR151-100, SNR201-100, SNA151-100, SNA201-100 Installation Manual

...

WARNING: If the information in these instructions

is 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.

SHW-I-S Rev A

Installation & Service

Manual

Models: SNR126-065, SNR151-100,

SNR201-100, SNA151-100, SNA201-100,

SNA286-125, SNA401-125, AND SNA501-125

-- 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 near by 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.

 WARNING

Save this manual for future reference.

This manual must only be used by a qualified heating installer / service technician. Read all instructions in this manual before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage.

Contents

PLEASE READ BEFORE PROCEEDING ...................... 3

Hazard Definitions ...................................................... 3

THE SHIELD -- HOW IT WORKS ............................... 4-6

RATINGS ......................................................................... 7

1. DETERMINE WATER HEATER LOCATION

Closet and Alcove Installations ........................................ 8

Provide Clearances .......................................................... 8

Flooring and Foundation ................................................ 10

Remove Water Heater from Wood Pallet ...................... 10

Prevent Combustion Air Contamination ......................... 10

Using an Existing Vent System to Install a New Water

Heater ............................................................................. 11

Removing Water Heater From Existing Common Vent . 11

Combustion & Ventilation Air Requirements ............ 12-14

2. GENERAL VENTING

Direct Venting Options ................................................... 15

Install Vent and Combustion Air Piping ......................... 16

Requirements for Installation in Canada ........................ 17

Sizing ............................................................................. 17

Min./Max. Combustion Air & Vent Piping Lengths ..........17

Materials ..........................................................................18

Optional Room Air .......................................................... 19

PVC/CPVC ..................................................................... 20

Polypropylene ................................................................. 21

Stainless Steel Vent ....................................................... 22

3. SIDEWALL DIRECT VENTING .................... 23-29

4. VERTICAL DIRECT VENTING ............................ 30-33

5. SYSTEM PIPING

General Piping ............................................................... 34

Scalding .................................................................... 34

Water Chemistry ....................................................... 35

Piping Components ........................................................ 35

Piping Diagrams .................................................. 36-38

6. GAS CONNECTIONS

Connecting Gas Supply Piping ...................................... 39

Natural Gas .................................................................... 40

Pipe Sizing for Natural Gas ...................................... 40

Natural Gas Supply Pressure Requirements ........... 40

Propane Gas .................................................................. 40

Pipe Sizing for Propane Gas .................................... 40

Propane Supply Pressure Requirements ................. 40

Check Inlet Gas Supply ............................................ 41-42

Gas Pressure ................................................................. 42

Gas Valve Replacement ................................................ 42

7. FIELD WIRING

Low Voltage Connections .............................................. 43

Enable Switch ..... ........... ................................................ 43

Louver Relay Output / Louver Proving Switch Input...... 43

Power Cord Connection ................................................ 43

Runtime Contacts .......................................................... 43

Alarm Contacts .............................................................. 43

8. CONDENSATE DISPOSAL

Condensate Drain ............................................................ 46

9. START-UP

Check for Gas Leaks ....................................................... 47

Inspect/fill Condensate System ........................................ 47

Final Checks Before Starting the Water Heater .......... 47-50

10. OPERATING INFORMATION

How the Water Heater Operates ...................................... 51

Temperature Control ........................................................ 51

Protection Features .......................................................... 51

Water Heater Temperature Regulation ............................ 52

Adjustable Control Parameters ................................... 52-53

The Shield Control Module .............................................. 54

11. MAINTENANCE

Maintenance and Annual Startup ..................................... 55

Address Reported Problems ...................................... 56

Inspect Water Heater Interior ..................................... 56

Clean Condensate Trap ............................................. 56

Check All Piping for Leaks .......................................... 56

Flue Vent System and Air Piping ................................ 56

Check Water System .................................................. 56

Check Expansion Tank ............................................... 57

Check Water Heater Relief Valve ............................... 57

Inspect Ignition & Flame Sense Electrodes ................ 57

Check Ignition Ground Wiring ..................................... 57

Check All Water Heating Wiring ................................. 57

Check Control Settings ............................................... 57

Perform Startup & Checks .......................................... 57

Check Burner Flames ................................................. 58

Check Flame Signal ................................................... 58

Review with Owner ..................................................... 58

Handling Ceramic Fiber Materials .............................. 58

Cleaning Heat Exchanger ...................................... 58-59

Oiled Bearing Circulators ............................................ 59

Magnesium Anode Rod Inspection ............................. 59

Check Delta T ............................................................. 59

12. TROUBLESHOOTING

Before Troubleshooting .................................................... 60

Troubleshooting Chart - No Display ........................... 61

Checking Temperature Sensors ................................. 62

Troubleshooting Chart - Noisy System ....................... 63

Troubleshooting Chart - Fault Messages

Displayed ............................................................... 64-69

Combustion Analysis Procedure ...................................... 70

Gas Valve Adjustment Procedure .................................... 71

13. DIAGRAMS

Ladder Diagram ............................................................... 72

Wiring Diagram................................................................. 73

Installation & Service Manual

Please read before proceeding

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

 DANGER

 WARNING

 CAUTION

CAUTION

NOTICE

 WARNING

NOTICE

 WARNING

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

Installer – Read all instructions, in this manual before installing. Perform steps in the order given.

Have this water heater serviced/inspected by a qualified service technician, at least annually.

Failure to comply with the above could result in severe personal injury, death or substantial property damage.

When calling or writing about the water heater – Please have the water heater model and serial number from the water heater rating plate.

Consider piping and installation when determining water heater location.

Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

Factory warranty (shipped with unit) does not apply to units improperly installed or improperly operated.

Failure to adhere to the guidelines on this page can result in severe personal injury, death, or substantial property damage.

When servicing the water heater –

• To avoid electric shock, disconnect electrical supply before performing maintenance.

• To avoid severe burns, allow the water heater to cool before performing maintenance.

 WARNING

If the information in these instructions is 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 near by 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.

Water heater operation –

• Do not block flow of combustion or ventilation air to the water heater.

• Should overheating occur or gas supply fail to shut off, do not turn off or disconnect electrical supply to circulator. Instead, shut off the gas supply at a location external to the appliance.

• Do not use this water heater if any part has been under water. The possible damage to a flooded appliance can be extensive and present numerous safety hazards. Any appliance that has been under water must be replaced.

The Shield - How it works...

Installation & Service Manual

1. Access cover - front

Provides access to the gas train, heat exchanger and controls.

2. Air intake adapter

Allows for the connection of the PVC air intake pipe to the water heater.

3. Air pressure switch

The air pressure switch detects blocked inlet conditions.

4. Air shroud (501-125 Model Only_Not Shown)

The air shroud directs air and gas flow into the blower.

5. Blower

The blower pulls in air and gas through the venturi (item 32). Air and gas mix inside the blower and are pushed into the burner, where they burn inside the combustion chamber.

6. Burner (not shown)

Made with metal fiber and stainless steel construction, the burner uses pre-mixed air and gas and provides a 5 to 1 firing rate.

7. Condensate drain connection

Connects the condensate drain line to 1/2" PVC.

8. Electronic Control Module

The electronic control responds to internal and external signals and controls the blower, gas valve, and pump to meet the demand.

9. Electronic display

The electronic display consists of 4 buttons, and a liquid crystal display. The display is used to make adjustments and read water heater status.

10. Flame inspection window (not shown)

The quartz glass window provides a view of the burner surface and flame.

11. Flame sensor

Used by the control module to detect the presence of burner flame.

12. Flue gas sensor (not shown)

This sensor monitors the flue gas exit temperature. The control module will modulate and shut down the water heater if the flue gas temperature gets too hot. This protects the flue pipe from overheating.

13. Gas connection pipe

Threaded pipe connection, either 1/2", 3/4", or 1", depending on the model. This pipe should be connected to the incoming gas supply for the purpose of delivering gas to the water heater.

14. Gas shutoff switch (151-100 - - 286-125 Models Only)

An electrical switch designed to cut power from the gas valve to prevent gas flow to the burner.

15. Gas shutoff valve (401-125 -- 501-125 Models Only)

Manual valve used to isolate the gas valve from the gas supply.

16. Gas valve

The gas valve senses the negative pressure created by the blower, allowing gas to flow only if the gas valve is powered and combustion air is flowing.

17. Heat exchanger access cover

Allows access to the combustion side of the heat exchanger coils.

18. Heat exchanger inlet temperature sensor

This sensor monitors the inlet water temperature to the heat exchanger.

19. Heat exchanger outlet temperature sensor

This sensor monitors heat exchanger outlet water temperature.

20. Ignition electrode

Provides direct spark for igniting the burner.

21. Line voltage junction box

The junction box contains the connection points for the line voltage power.

22. Low voltage connection board

The connection board is used to connect external low voltage devices.

23. Low voltage wiring connections (knockouts)

Conduit entryway for the low voltage connection board.

24. Power cord

The power cord allows for quick connection to 120V supply.

25. Pump Circulates water between the tank and the heat exchanger.

26. Pump relay Switches power to the pump.

27. Relief valve

Protects the heat exchanger from over pressure and temperature conditions. The relief valve is set at 150 PSI.

28. Stainless steel heat exchanger

Allows water to flow through specially designed coils for maximum heat transfer, while providing protection against flue gas corrosion. The coils are encased in a jacket that contains the combustion process.

29. Tank sensor Used by the control to monitor the temperature of the tank.

30. Pump access panel

Panel used to gain access to the pump and condensate trap; also used to gain access to the outlet water sensor on Models

286-125 -- 501-125 only.

31. Vent pipe connection

Allows for the connection of the vent pipe system to the water heater.

32. Venturi

The venturi controls air and gas flow into the burner.

33. Water heater drain valve

Location from which the water heater can be drained.

34. Water inlet

Copper sweat connection for cold water supply that returns water from the system to the heat exchanger, either 1-1/2" or 2", depending on the model.

35. Water outlet

Copper sweat connection that supplies hot water to the system, either 1-1/2" or 2", depending on the model.

36. Over-temp switch (286-125 --501-125 Models Only)

An electrical switch designed to shut down water heater operation in the event the outer back of the heat exchanger, directly above the flue connection exceeds 604°F (318°C). This is a one time switch and could warrant a heat exchanger replacement. Check the integrity of the rear refractory at the back of the upper coil if the switch opens.

The Shield - How it works... (continued)

Installation & Service Manual

Models 126-065 -- 201-100

IMG00461

Front View - Models 126-065 -- 201-100

11 21

IMG00461

16 32

Rear View - Models 126-065 -- 201-100

IMG00461

Left Side (inside unit) -- Models 126-065 -- 201-100

Right Side (inside unit) -- Models 126-065 -- 201-100

The Shield - How it works...

Models 286-125 -- 401-125

Installation & Service Manual

16 32 14

Rear View - Models 286-125 -- 401-125

Model 501-125

IMG00461

Right Side (inside unit) - Models 286-125 -- 401-125

22 8

21 20 17

16 32 14

Rear View - Model 501-125

IMG00461

Right Side (inside unit) - Model 501-125

Ratings

Installation & Service Manual

HLW

Model Number

Note: Change “N” to “L” for L.P. gas

models.

SNR126-065 25,000 - 125,000 TBD 1-1/2" 1/2" 3"

SNR151-100 30,000 - 150,000 TBD 1-1/2" 1/2" 3"

SNA151-100 30,000 - 150,000 TBD 1-1/2" 1/2" 3"

SNR201-100 40,000 - 200,000 TBD 1-1/2" 1/2" 3" SNA201-100 40,000 - 200,000 TBD 1-1/2" 1/2" 3" SNA286-125 57,000 - 285,000 TBD 2" 3/4" 4" SNA401-125 80,000 - 400,000 TBD 2" 1" 4" SNA501-125 100,000 - 500,000 TBD 2" 1" 4"

NOTICE

Maximum allowed working pressure is located on the rating plate.

Input Modulation Btu/hr

CSA

(Note 2)

Min Max

Water Content

Gallons

Water

Connections

Gas

Connections

Notes:

1. Shield water heaters require special gas venting. Use only the vent materials and methods specified in the Shield Installation and Service Manual.

Vent/Air Size

(Note 1)

2. Standard Shield water heaters are equipped to operate from sea level to 4,500 feet only with no adjustments. The water heater will de-rate by 4% for each 1,000 feet above sea level up to 4,500 feet.

3. High altitude Shield water heaters are equipped to operate from 3,000 to 12,000 feet only with no field adjustments. The water heater will de-rate by 2% for each 1,000 feet above 3,000 feet. High altitude models are manufactured with a different control module for altitude operation, but the operation given in this manual remains the same as the standard models. A high altitude label (as shown in FIG. A) is also affixed to the unit.

UNIT EQUIPPED FOR

HIGH ALTITUDE

3,000 FT. TO 12,000 FT.

IMG00462

Figure A High Altitude Label Location

1 Determine water heater location

Installation & Service Manual

Installation must comply with:

• Local, state, provincial, and national codes, laws, regulations, and ordinances.

• National Fuel Gas Code, ANSI Z223.1 – latest edition.

• National Electrical Code.

• For Canada only: B149.1 Installation Code, CSA C22.1 Canadian Electrical Code Part 1 and any local codes.

NOTICE

The Shield water heater gas manifold and controls met safe lighting and other performance under tests specified in ANSI Z21.10.3 – latest edition.

Before locating the water heater, check:

1. Check for nearby connection to:

• Water piping

• Venting connections

• Gas supply piping

• Electrical power

2. Locate the appliance so that if water connections should leak, water damage will not occur. When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. Under no circumstances is the manufacturer to be held responsible for water damage in connection with this appliance, or any of its components.

3. Check area around the water heater. Remove any combustible materials, gasoline and other flammable liquids.

 WARNING

4. The Shield water heater must be installed so that gas

control system components are protected from dripping or spraying water or rain during operation or service.

 WARNING

Failure to keep water heater area clear and free of combustible materials, gasoline, and other flammable liquids and vapors can result in severe personal injury, death, or substantial property damage.

This appliance is certified as an indoor appliance. Do not install the appliance outdoors or locate where the appliance will be exposed to freezing temperatures or to temperatures that exceed 100°F.

Do not install the appliance where the relative humidity may exceed 93%. Do not install the appliance where condensation may form on the inside or outside of the appliance, or where condensation may fall onto the appliance.

Failure to install the appliance indoors could result in severe personal injury, death, or substantial property damage.

 WARNING

This appliance requires a special venting system. The vent connection to the appliance must be made with the CPVC pipe section provided with the appliance. The field provided vent fittings must be cemented to the CPVC pipe section. Use only the vent materials, primer and cement specified in this manual to make the vent connections. Failure to follow this warning could result in fire, personal injury, or death.

Closet and alcove installations

A closet is any room the water heater is installed in which is less than 433 cubic feet for 126-065 and 201-100 models and 638 cubic feet for the 286-125 through 501-125 models.

An alcove is any room which meets the criteria for a closet with the exception that it does not have a door.

Example: Room dimensions = 6 feet long, 6 feet wide, and 9 foot ceiling = 6 x 6 x 9 = 324 cubic feet. This would be considered a closet for a Shield Water Heater.

 WARNING

For closet and alcove installations as shown in FIG.’s 1-1 and 1-2, CPVC or stainless steel vent material must be used inside the structure. The ventilating air openings shown in FIG.’s 1-1 and 1-2 are required for this arrangement. Failure to follow this warning could result in fire, personal injury, or death.

Provide clearances:

Clearances from combustible materials

1. Hot water pipes—at least 1/4" from combustible materials.

2. Vent pipe – at least 1" from combustible materials.

3. See FIG.’s 1-1 and 1-2 on page 9 for other clearance minimums.

Clearances for service access

1. See FIG.’s 1-1 and 1-2 on page 9 for recommended

service clearances. If you do not provide the minimum clearances shown, it may not be possible to service the water heater without removing it from the space.

Installation & Service Manual

1 Determine water heater location (continued)

Figure 1-1 Closet Installation - Minimum Required Clearances

1/4" (6.35 MM) MINIMUM CLEARANCE AROUND HOT WATER PIPES 1" (25.4 MM) MINIMUM CLEARANCE AROUND VENT PIPE

VENTILATIING AIR OPENING

IMG00463

 WARNING

CLOSED DOOR

For closet installations, CPVC, polypropylene or stainless steel vent material MUST BE used in a closet structure due to elevated temperatures. Failure to follow this warning could result in fire, personal injury, or death.

RECOMMENDED SERVICE CLEARANCES:

Top - 18" (457 mm) Left/Right Side - 24" (610 mm) Front - 24" (610 mm)

Figure 1-2 Alcove Installation - Minimum Required Clearances

1/4" (6.35 MM) MINIMUM CLEARANCE AROUND HOT WATER PIPES 1" (25.4 MM) MINIMUM CLEARANCE AROUND VENT PIPE

OPEN FRONT

IMG00463

 WARNING

For alcove installations, CPVC, polypropylene or stainless steel vent material MUST BE used in an alcove structure due to elevated temperatures. Failure to follow this warning could result in fire, personal injury, or death.

RECOMMENDED SERVICE CLEARANCES:

Top - 18" (457 mm) Left/Right Side - 24" (610 mm) Front - 24" (610 mm)

1 Determine water heater location

Installation & Service Manual

Table 1A Corrosive Contaminants and Sources

Products to avoid:

Spray cans containing chloro/fluorocarbons

Permanent wave solutions

Chlorinated waxes/cleaners

Chlorine-based swimming pool chemicals

Calcium chloride used for thawing

Sodium chloride used for water softening

Refrigerant leaks

Paint or varnish removers

Hydrochloric acid/muriatic acid

Cements and glues

Antistatic fabric softeners used in clothes dryers

Chlorine-type bleaches, detergents, and cleaning solvents found in household laundry rooms

Adhesives used to fasten building products and other similar products

Areas likely to have contaminants

Dry cleaning/laundry areas and establishments

Swimming pools

Metal fabrication plants

Beauty shops

Refrigeration repair shops

Flooring and foundation

Flooring

The Shield water heater is approved for installation on combustible flooring, but must never be installed on carpeting.

 WARNING

When local codes require compliance with NSF 5, the heater must be sealed to the floor with a food grade silicone to prevent debris and harborage of vermin under the heater.

If flooding is possible, elevate the water heater sufficiently to prevent water from reaching the water heater.

Do not install the water heater on carpeting even if foundation is used. Fire can result, causing severe personal injury, death, or substantial property damage.

Remove water heater from wood pallet

1. Remove the sides and the top of the crate.

2. Remove the blocks on the base of the crate to allow for easier removal.

3. The water heater can then be slid off the base of the crate for installation.

NOTICE

Do not drop the water heater or bump the jacket on the floor or pallet. Damage to the water heater can result.

Prevent combustion air contamination

Install air inlet piping for the Shield water heater as described in this manual. Do not terminate vent/air in locations that can allow contamination of combustion air. Refer to Table 1A, for products and areas which may cause contaminated combustion air.

Photo processing plants

Auto body shops

Plastic manufacturing plants

Furniture refinishing areas and establishments

New building construction

Remodeling areas

Garages with workshops

 WARNING

Ensure that the combustion air will not contain any of the contaminants in Table 1A. Contaminated combustion air will damage the water heater, resulting in possible severe personal injury, death or substantial property damage. Do not pipe combustion air near a swimming pool, for example. Also, avoid areas subject to exhaust fumes from laundry facilities. These areas will always contain contaminants.

Installation & Service Manual

1 Determine water heater location (continued)

When using an existing vent system to install a new water heater:

 WARNING

Check the following venting components before installing:

• Material - For materials listed for use with this appliance, see Section 2 - General Venting. For polypropylene or stainless steel venting, an adapter of the same

manufacturer must be used at the flue collar connection.

• Size - To ensure proper pipe size is in place, see Table 2A. Check to see that this size is used throughout the vent system.

• Manufacturer - For a stainless steel or polypropylene application, you must use only the listed manufacturers and their type product listed in Tables 2E and 2G for CAT IV positive pressure venting with flue producing condensate.

• Supports - Non-combustible supports must be in place allowing a minimum 1/4" rise per foot. The supports should adequately prevent sagging and vertical slippage, by distributing the vent system weight. For additional information, consult the vent manufacturer’s instructions for installation.

• Terminations - Carefully review Sections 2 through 4 to ensure requirements for the location of the vent and air terminations are met and orientation of these fit the appropriate image from the Sidewall or Vertical options listed in the General Venting Section. For stainless steel vent, only use terminations listed in Table 2H for the manufacturer of the installed vent.

Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

When removing a water heater from existing common vent system:

 DANGER

 WARNING

At the time of removal of an existing water heater, the following steps shall be followed with each appliance remaining connected to the common venting system placed in operation, while the other appliances remaining connected to the common venting system are not in operation.

a. Seal any unused openings in the common venting system.

b. Visually inspect the venting system for proper size and

horizontal pitch and determine there is no blockage or restriction, leakage, corrosion, or other deficiencies, which could cause an unsafe condition.

c. Test vent system – Insofar as is practical, close all building

doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building. Turn on clothes dryers and any appliance not connected to the common venting system. Turn on any exhaust fans, such as range hoods and bathroom exhausts, so they will operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

d. Place in operation the appliance being inspected. Follow

the lighting instructions. Adjust thermostat so appliance will operate continuously.

Do not install the Shield water heater into a common vent with any other appliance. This will cause flue gas spillage or appliance malfunction, resulting in possible severe personal injury, death, or substantial property damage.

Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

• Seal - With prior requirements met, the system should be tested to the procedure listed in parts (c) through (f) of the Removal of an Existing Water Heater Section, this page.

With polypropylene and stainless steel vent, seal and connect all pipe and components as specified by the vent manufacturer used; with PVC/CPVC vent, see the Installing Vent or Air Piping Section on page 20.

 WARNING

If any of these conditions are not met, the existing system must be updated or replaced for that concern. Failure to follow all instructions can result in flue gas spillage and carbon monoxide emissions, causing severe personal injury or death.

e. Test for spillage at the draft hood relief opening after

5 minutes of main burner operation. Use the flame of a match or candle, or smoke from a cigarette, cigar, or pipe.

f. After it has been determined that each appliance

remaining connected to the common venting system properly vents when tested as outlined herein, return doors, windows, exhaust fans, fireplace dampers, and any other gas-burning appliance to their previous conditions of use.

g. Any improper operation of the common venting system

should be corrected so the installation conforms with the National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and Propane Installation Code. When resizing any portion of the common venting system, the common venting system should be resized to approach the minimum size as determined using the appropriate tables in Part 11 of the National Fuel Gas Code, ANSI Z223.1/NFPA and/or CAN/CSA B149.1, Natural Gas and Propane Installation Code.

1 Determine water heater location

Installation & Service Manual

Maintain minimum specified clearances for adequate operation. All installations must allow sufficient space for servicing the vent connections, water pipe connections, piping and other auxiliary equipment, as well as the appliance.

Multiple appliances may be installed in a modular water heater installation. Multiple appliances may be installed side by side with no clearance between adjacent appliances because this appliance is approved for zero clearance from combustible surfaces.

Consult the Venting section of this manual for specific installation instructions for the appropriate type of venting system that you will be using.

Combustion and ventilation air requirements for appliances drawing air from the equipment room

Provisions for combustion and ventilation air must be in accordance with Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

1. If air is taken directly from outside the building

with no duct, provide two permanent openings to the equipment room (see FIG. 1-3):

(a) Combustion air opening, with a minimum free area of one square inch per 4000 Btu/hr input (5.5 cm2 per KW). This opening must be located within 12" (30 cm) of the bottom of the enclosure.

(b) Ventilation air opening, with a minimum free area of one square inch per 4000 Btu/hr input (5.5 cm2 per kW). This opening must be located within 12" (30 cm) of the top of the enclosure.

The equipment room MUST be provided with properly sized openings to assure adequate combustion air and proper ventilation.

Figure 1-3_Combustion Air Direct from Outside

Figure 1-4_Combustion Air Through Ducts

2. If combustion and ventilation air is taken from the outdoors using a duct to deliver the air to the equipment room, each of the two openings should be sized based on a minimum free area of one square inch per 2000 Btu/hr (11 cm2 per kW) of input (see FIG. 1-4).

Installation & Service Manual

1 Determine water heater location (continued)

IF NECESSARY FOR

TIGHT CONSTRUCTION

Figure 1-5_Combustion Air from Interior Space

3. If air is taken from another interior space, each of the two openings specified above should have a net free area of one square inch for each 1000 Btu/hr (22 cm2 per kW) of input, but not less than 100 square inches (645 cm2) (see FIG. 1-5).

Figure 1-6_Combustion Air from Outside - Single Opening

4. If a single combustion air opening is provided to bring combustion air in directly from the outdoors, the opening must be sized based on a minimum free area of one square inch per 3000 Btu/hr (7 cm2 per kW). This opening must be located within 12" (30 cm) of the top of the enclosure (see FIG. 1-6).

TABLE - 1B

MINIMUM RECOMMENDED COMBUSTION

AIR SUPPLY TO EQUIPMENT ROOM

FIG. 1-3 FIG. 1-4 FIG. 1-5 FIG. 1-6

Model

Number

126-065

151-100

201-100

286-125

401-125

501-125

*Outside Air from

2 Openings Directly from

Outdoors

Top

Opening, in

(207 cm2)

(246 cm

(323 cm

(465 cm

100

(646 cm

125

(807 cm

)

Bottom

Opening, in

(207 cm2)

(246 cm2)

(323 cm2)

(465 cm2)

100

(646 cm2)

125

(807 cm2)

*Outside Air from

2 Ducts Delivered from

Outdoors

Top

Opening, in

Bottom

(407 cm2)

(484 cm2)

100

(646 cm2)

143

(923 cm2)

200

(1,291 cm2)

250

(1,613 cm2)

100

143

200

250

**Inside Air from

2 Ducts Delivered from Interior

Space

Top

Opening, in

Bottom

Opening, in

125

(807 cm2)

150

(968 cm2)

200

(1,291 cm2)

285

(1,839 cm2)

400

(2,581 cm2)

500

(3,226 cm2)

125

150

200

285

400

500

*Outside Air from 1 Opening Directly from Outdoors, in

(271 cm2)

(323 cm2)

(433 cm2)

(613 cm2)

134

(865 cm2)

167

(1,078 cm2)

*Outside air openings shall directly communicate with the outdoors. When combustion air is drawn from the outside through a duct, the net free area of each of the two openings must have twice (2 times) the free area required for Outside Air/2 Openings. The above requirements are for the water heater only; additional gas fired appliances in the equipment room will require an increase in the net free area to supply adequate combustion air for all appliances.

**Combined interior space must be 50 cubic feet per 1,000 Btu/hr input. Buildings MUST NOT be of *“Tight Construction”. For buildings of *“Tight Construction”, provide air openings into the building from outside.

*No combustion air openings are needed when the water heater is installed in a space with a volume NO LESS than 50 cubic feet per 1,000 Btu/hr of all installed gas fired appliances. Buildings MUST NOT be of *“Tight Construction”.

*“Tight Construction” is defined as a building with less than 0.40 ACH (air changes per hour).

1 Determine water heater location

Installation & Service Manual

Combustion air requirements are based on the latest edition of the National Fuel Gas Code, ANSI Z223.1; in Canada refer to the latest edition of CGA Standard CAN B149.1. Check all local code requirements for combustion air.

All dimensions based on net free area in square inches. Metal louvers or screens reduce the free area of a combustion air opening a minimum of approximately 25%. Check with louver manufacturers for exact net free area of louvers. Where two openings are provided, one must be within 12" (30cm) of the ceiling and one must be within 12" (30cm) of the floor of the equipment room. Each opening must have net free area as specified in the chart above (Table 1B). Single openings shall commence within 12" (30cm) of the ceiling.

 CAUTION

Under no circumstances should the equipment room ever be under negative pressure. Particular care should be taken where exhaust fans, attic fans, clothes dryers, compressors, air handling units, etc., may take away air from the unit.

The combustion air supply must be completely free of any flammable vapors that may ignite or chemical fumes which may be corrosive to the appliance. Common corrosive chemical fumes which must be avoided are fluorocarbons and other halogenated compounds, most commonly present as refrigerants or solvents, such as Freon, trichlorethylene, perchlorethylene, chlorine, etc. These chemicals, when burned, form acids which quickly attack the stainless steel heat exchanger, headers, flue collectors, and the vent system.

The result is improper combustion and a non-warrantable, premature appliance failure.

EXHAUST FANS: Any fan or equipment which exhausts air from the equipment room may deplete the combustion air supply and/or cause a downdraft in the venting system. Spillage of flue products from the venting system into an occupied living space can cause a very hazardous condition that must be immediately corrected. If a fan is used to supply combustion air to the equipment room, the installer must make sure that it does not cause drafts which could lead to nuisance operational problems with the appliance.

2 General venting

Direct venting options - Sidewall Vent

Installation & Service Manual

IMG00464

Figure 2-1 Two-Pipe Sidewall Termination - See page 23 for more details

Figure 2-2 PVC/CPVC Concentric Sidewall Termination

- See page 27 for more details

Direct venting options - Vertical Vent

IMG00464

IMG00466

Figure 2-3 Two-Pipe Vertical Termination

- See page 30 for more details

IMG00466

Figure 2-4 PVC/CPVC Concentric Vertical Termination - See page 32 for more details

IMG00466

Figure 2-5 Vertical Vent, Sidewall Air - See page 19 for more details

2 General venting

Install vent and combustion air piping

Installation & Service Manual

 DANGER

 WARNING

NOTICE

 WARNING

The Shield water heater must be vented and supplied with combustion and ventilation air as described in this section. Ensure the vent and air piping and the combustion air supply comply with these instructions regarding vent system, air system, and combustion air quality. See also Section 1 of this manual.

Inspect finished vent and air piping thoroughly to ensure all are airtight and comply with the instructions provided and with all requirements of applicable codes.

Failure to provide a properly installed vent and air system will cause severe personal injury or death.

This appliance requires a special venting system. Use only approved stainless steel,

PVC, CPVC or polypropylene pipe and fittings listed in Tables 2D, 2E, and 2G for vent pipe, and fittings. Failure to comply could result in severe personal injury, death, or substantial property damage.

DO NOT mix components from different systems. The vent system could fail, causing leakage of flue products into the

living space. Mixing of venting materials will void the warranty and certification of the appliance.

Installation must comply with local requirements and with the National Fuel Gas Code, ANSI Z223.1 for U.S. installations or CSA B149.1 for Canadian installations.

For closet and alcove installations, CPVC, polypropylene or stainless steel material MUST BE used in a closet/alcove structure. Failure to follow this warning could result in fire, personal injury, or death.

The Shield water heater vent and air piping can be installed through the roof or through a sidewall. Follow the procedures in this manual for the method chosen. Refer to the information in this manual to determine acceptable vent and air piping length.

You may use any of the vent/air piping methods covered in this manual. Do not attempt to install the Shield water heater using any other means.

You must also install air piping from outside to the water heater air intake adapter unless following the Optional Room Air instructions on page 19 of this manual. The resultant installation is direct vent (sealed combustion).

Air intake/vent connections

1. Combustion Air Intake Connector (FIG. 2-6) - Used to provide combustion air directly to the unit from outdoors. A fitting is provided on the unit for final connection. Combustion air piping must be supported per guidelines listed in the National Mechanical Code, Section 305, Table

305.4 or as local codes dictate.

2. Vent Connector (FIG.'s 2-7 thru 2-9) - Used to provide a passageway for conveying combustion gases to the outside. A transition fitting is provided on the unit for final connection. Vent piping must be supported per the National Building Code, Section 305, Table 305.4 or as local codes dictate.

Figure 2-6 Near Water Heater Air Piping

AIR

 CAUTION

NOTICE

 WARNING

Improper installation of venting systems may result in injury or death.

Follow the instructions in Section 1, page 11 of this manual when removing a water heater from an existing vent system.

Do not connect any other appliance to the vent pipe or multiple water heaters to a common vent pipe. Failure to comply could result in severe personal injury, death, or substantial property damage.

IMG00467

2 General venting (continued)

Installation & Service Manual

Requirements for installation in Canada

1. Installations must be made with a vent pipe system certified to ULC-S636.

2. The first three (3) feet of plastic vent pipe from the appliance flue outlet must be readily accessible for visual inspection.

3. The components of the certified vent system must not be interchanged with other vent systems or unlisted pipe/fittings. For concentric vent installations, the inner vent tube must be replaced with field supplied certified vent material to comply with this requirement.

4. The 3" Concentric Vent Kit available from Lochinvar (see Section 3 – Sidewall Termination – Optional Concentric Vent) and the 3" Concentric Vent Kit available from IPEX are both approved for use on the Shield water heater. Both kits are listed to the ULC-S636 standard for use in Canada.

Sizing

The Shield water heater uses model specific combustion air intake and vent piping sizes as detailed in Table 2A below.

Table 2A Air Intake/Vent Piping Sizes

Model Air Intake Vent

126-065 -- 201-100 3 inches 3 inches 286-125 -- 501-125 4 inches 4 inches

Minimum / Maximum allowable combustion air and vent piping lengths are as follows:

Combustion Air = 12 equivalent feet minimum / 100 equivalent feet maximum

Vent = 12 equivalent feet minimum / 100 equivalent feet maximum

When determining equivalent combustion air and vent length, add 5 feet for each 90° elbow and 3 feet for each 45° elbow.

EXAMPLE: 20 feet of PVC pipe + (4) 90° elbows + (2) 45° elbows + (1) concentric vent kit (CVK3003) = 49 equivalent feet of piping.

NOTICE

Table 2B Concentric Vent Kit Equivalent Vent Lengths

Model

126-065 -- 201-100 CVK3003 3 feet

286-125 CVK3007 3 feet 401-125 CVK3007 5 feet 501-125 CVK3007 30 feet

The appliance output rating will reduce by up to 1.5% for each 25 feet of vent length.

Kit

Number

Equivalent

Vent Length

NOTICE

Increasing or decreasing combustion air or vent piping sizes is not authorized.

2 General venting

Materials

Air inlet pipe materials:

The air inlet pipe(s) must be sealed. Choose acceptable combustion air inlet pipe materials from the following list:

PVC, CPVC, Polypropylene or ABS Dryer Vent or Sealed Flexible Duct (not recommended for rooftop air inlet) Galvanized steel vent pipe with joints and seams sealed as specified in this section. Type “B” double-wall vent with joints and seams sealed as specified in this section. AL29-4C, stainless steel material to be sealed to specification of its manufacturer.

Installation & Service Manual

The PVC, CPVC, or ABS air inlet pipe should be cleaned and sealed with the pipe manufacturer’s recommended solvents and standard commercial pipe cement for the material used. The PVC, CPVC, ABS, Dryer Vent or Flex Duct air inlet pipe should use a silicone sealant to ensure a proper seal at the appliance connection and the air inlet cap connection. Dryer vent or flex duct should use a screw type clamp to seal the vent to the appliance air inlet and the air inlet cap. Proper sealing of the air inlet pipe ensures that combustion air will be free of contaminants and supplied in proper volume.

Follow the polypropylene manufacturer’s instructions when using polypropylene material as an inlet pipe.

*Plastic pipe may require an adapter (not provided) to transition between the air inlet connection on the appliance and the plastic air inlet pipe.

 WARNING

NOTICE

Sealing of Type “B” double-wall vent material or galvanized vent pipe material used for air inlet piping on a sidewall or vertical rooftop Combustion Air Supply System:

a. Seal all joints and seams of the air inlet pipe using either Aluminum Foil Duct Tape meeting UL Standard 723 or 181A-P or a high quality UL Listed silicone sealant such as those manufactured by Dow Corning or General Electric.

b. Do not install seams of vent pipe on the bottom of horizontal runs.

c. Secure all joints with a minimum of three (3) sheet metal screws or pop rivets. Apply Aluminum Foil Duct Tape or silicone sealant to all screws or rivets installed in the vent pipe.

Using air intake materials other than those specified can result in personal injury, death or property damage.

The use of double-wall vent or insulated material for the combustion air inlet pipe is recommended in cold climates to prevent the condensation of airborne moisture in the incoming combustion air.

When a sidewall or vertical rooftop combustion air supply system is disconnected for any reason, the air inlet pipe must be resealed to ensure that combustion air will be free of contaminants and supplied in proper volume.

 DANGER

Failure to properly seal all joints and seams as required in the air inlet piping may result in flue gas recirculation, spillage of flue products and carbon monoxide emissions causing severe personal injury or death.

d. Ensure that the air inlet pipes are properly supported.

2 General venting (continued)

Installation & Service Manual

Optional room air

NOTICE

Commercial applications utilizing the Shield water heater may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room. In order to use the room air venting option the following conditions and considerations must be followed.

• The unit MUST be installed with the appropriate room air provisions.

• The equipment room MUST be provided with properly sized openings to assure adequate combustion air. Please refer to instructions provided with the room air kit (KIT30052 - Models 126-065

-- 201-100 and KIT30053 - Models 286-125 -- 501-

125).

• There will be a noticeable increase in the noise level during normal operation from the inlet air opening.

• Using the room air configuration makes the unit vulnerable to combustion air contamination from within the building. Please review Section 1, Prevent Combustion Air Contamination, to ensure proper installation.

• Vent system and terminations must comply with the standard venting instructions set forth in this manual.

 WARNING

Optional room air is intended for commercial applications. Combustion air piping to the outside is recommended for residential applications.

When utilizing the single pipe method, provisions for combustion and ventilation air must be in accordance with Air for Combustion and Ventilation, of the latest edition of the National Fuel Gas Code, ANSI Z223.1, in Canada, the latest edition of CGA Standard B149 Installation Code for Gas Burning Appliances and Equipment, or applicable provisions of the local building codes.

Air contamination

Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the water heater, they can form strong acids. The acid can eat through the water heater wall, causing serious damage and presenting a possible threat of flue gas spillage or water heater water leakage into the building.

Please read the information given in Table 1A, page 10, listing contaminants and areas likely to contain them. If contaminating chemicals will be present near the location of the water heater combustion air inlet, have your installer pipe the water heater combustion air and vent to another location, per this manual.

 WARNING

If the water heater combustion air inlet is located in a laundry room or pool facility, for example, these areas will always contain hazardous contaminants.

To prevent the potential of severe personal injury or death, check for areas and products listed in Table 1A, page 10 before installing the water heater or air inlet piping.

If contaminants are found, you MUST:

• Remove contaminants permanently. —OR—

• Relocate air inlet and vent terminations

to other areas.

2 General venting

Installation & Service Manual

PVC/CPVC

This product has been approved for use with the PVC/CPVC vent materials listed in Table 2D.

Installing vent and air piping

 WARNING

The vent connection to the appliance must be made with the starter CPVC pipe section provided with the appliance if PVC/CPVC vent is to be used. The field provided vent fittings must be cemented to the CPVC pipe section using an “All Purpose Cement” suitable for PVC and CPVC pipe. Use only the vent materials, primer, and cement specified in Table 2D to make the vent connections. Failure to follow this warning could result in fire, personal injury, or death.

NOTICE

Use only cleaners, primers, and solvents that are approved for the materials which are joined together.

NOTICE

All PVC vent pipes must be glued, properly supported, and the exhaust must be pitched a minimum of a 1/4 inch per foot back to the water heater (to allow drainage of condensate).

 WARNING

Insulation should not be used on PVC or CPVC venting materials. The use of insulation will cause increased vent wall temperatures, which could result in vent pipe failure.

Table 2D PVC/CPVC Vent Pipe, and Fittings

Approved PVC/CPVC Vent Pipe and Fittings

Item Material Standard

PVC Schedule 40, 80 ANSI/ASTM D1785

Vent pipe

Vent fittings

Pipe Cement

/ Primer

NOTICE: DO NOT USE CELLULAR (FOAM) CORE PIPE

PVC - DWV ANSI/ASTM D2665 CPVC Schedule 40, 80 ANSI/ASTM F441 PVC Schedule 40 ANSI/ASTM D2466 PVC Schedule 80 ANSI/ASTM D2467 CPVC Schedule 80 ANSI/ASTM F439 PVC ANSI/ASTM D2564 CPVC ANSI/ASTM F493

1. Work from the water heater to vent or air termination. Do not exceed the lengths given in this manual for the air or vent piping.

2. Cut pipe to the required lengths and deburr the inside and outside of the pipe ends.

3. Chamfer outside of each pipe end to ensure even cement distribution when joining.

4. Clean all pipe ends and fittings using a clean dry rag. (Moisture will retard curing and dirt or grease will prevent adhesion.)

5. Dry fit vent or air piping to ensure proper fit up before assembling any joint. The pipe should go a third to two-thirds into the fitting to ensure proper sealing after cement is applied.

6. Priming and Cementing: a. Handle fittings and pipes carefully to prevent contamination of surfaces.

b. Apply a liberal even coat of primer to the fitting socket and to the pipe end to approximately 1/2" beyond the socket depth.

c. Apply a second primer coat to the fitting socket.

d. While primer is still wet, apply an even coat of approved cement to the pipe equal to the depth of the fitting socket along with an even coat of approved cement to the fitting socket.

e. Apply a second coat of cement to the pipe. f. While the cement is still wet, insert the pipe into

the fitting, if possible twist the pipe a 1/4 turn as you insert it. NOTE: If voids are present, sufficient cement was not applied and joint could be defective.

g. Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe.

Figure 2-7 Near Water Heater PVC/CPVC Venting

VENT

NOTE: In Canada, CPVC and PVC vent pipe, ﬁ ttings and cement/ primer must be ULC-S636 certiﬁ ed.

MODELS: 126-065 - 201-100

IMG00468

MODELS: 286-125 - 501-125

2 General venting (continued)

Installation & Service Manual

Polypropylene

This product has been approved for use with polypropylene vent with the manufacturers listed in Table 2E.

All terminations must comply with listed options in this manual and be a single-wall vent offering.

For use of flex pipe, it is recommended to have the vent material in 32°F or higher ambient space before bending at installation. No bends should be made to greater than 45° and ONLY installed in vertical or near vertical installations.

For support and special connections required, see the manufacturer's instructions. All vent is to conform to standard diameter and equivalent length requirements established.

Table 2E Polypropylene Vent Pipe and Fittings

Approved Polypropylene Vent Manufacturers

Make Model

Centrotherm Eco Systems

Duravent (M & G Group)

NOTICE

The installer must use a specific vent starter adapter at the flue collar connection. The adapter is supplied by the vent manufacturer to adapt to its vent system. See Table 2F for approved vent adapters. Discard CPVC starter piece.

NOTICE

All vent connections MUST be secured by the vent manufacturer's joint connector (FIG. 2-8).

PolyPro Single-Wall / PolyPro Flex

InnoFlue SW/Flex

 WARNING

Use only the adapters and vent system listed in Tables 2E and 2F. DO NOT mix vent systems of different types or manufacturers. Failure to comply could result in severe personal injury, death, or substantial property damage.

NOTICE

Installations must comply with applicable national, state, and local codes. For Canadian installation, polypropylene vent must be listed as a ULC-S636 approved system.

NOTICE

Installation of a polypropylene vent system should adhere to the vent manufacturer’s installation instructions supplied with the vent system.

Figure 2-8 Near Water Heater Polypropylene Venting

JOINT CONNECTOR REQUIRED AT ALL COMPONENT CONNECTIONS

OF VENT SYSTEM JOINT CONNECTOR REQUIRED AT ALL COMPONENT CONNECTIONS OF VENT SYSTEM

POLYPROPYLENE ADAPTER

 WARNING

Insulation should not be used on polypropylene venting materials. The use of insulation will cause increased vent wall temperatures, which could result in vent pipe failure.

Table 2F Approved PolypropyleneTerminations

MODELS: 126-065 - 201-100

Centrotherm InnoFlue SW

Model

126-065 -- 201-100 ISAAL0303 IANS03 IATP0303 ISTAGL0303 3PPS-AD 3PPS-LB 3PPS-HLK 286-125 -- 501-125 ISAAL0404 IANS04 IATP0404 ISTAGL0404 4PPS-AD 4PPS-LB 4PPS-HLK

* These parts are only needed if the sidewall termination assembly is used (see FIG. 3-4B on page 25).

Polypropylene

Adapter

Joint

Connector

Sidewall Retaining

Bracket*

Sidewall Adapter*

Polypropylene

Adapter

MODELS: 286-125 - 501-125

Duravent Polypro

Joint

Connector

IMG00469

Sidewall Kit*

2 General venting

Stainless steel vent

This product has been approved for use with stainless steel using the manufacturers listed in Table 2G.

 WARNING

Use only the materials, vent systems, and terminations listed in Tables 2G and 2H. DO NOT mix vent systems of different types or manufacturers. Failure to comply could result in severe personal injury, death, or substantial property damage.

Installation & Service Manual

NOTICE

Figure 2-9 Near Water Heater Stainless Steel Venting

Installation of a stainless steel vent system should adhere to the stainless steel vent manufacturer’s installation instructions supplied with the vent system.

3" S.S. ADAPTER

4" S.S. ADAPTER

NOTICE

The installer must use a specific vent starter adapter at the flue collar connection, supplied by the vent manufacturer to adapt to its vent system. See Table 2H for approved vent adapters. Discard CPVC starter piece.

NOTICE

Installations must comply with applicable national, state, and local codes. Stainless steel vent systems must be listed as a UL-1738 approved system for the United States and a ULC-S636 approved system for Canada.

Table 2G Stainless Steel Vent Pipe and Fittings

Approved Stainless Steel Vent Manufacturers

Make Model

Dura Vent (M & G Group) FasNSeal Vent / FasNSeal Flex* Vent Z-Flex (Nova Flex Group) Z-Vent Heat Fab (Selkirk Corporation) Saf-T Vent Metal Fab Corr/Guard

MODELS: 126-065 - 201-100

MODELS: 286-125 - 501-125

IMG00470

*Use of FasNSeal Flex smooth inner wall vent is to be used in vertical or near vertical sections only, taking precaution to ensure no sagging occurs of the vent system. Connect to the FasNSeal rigid vent using specially designed adapters and sealing method, see manufacturer’s instructions.

Table 2H Approved Stainless Steel (S.S.) Terminations and Adapters

ProTech Heat Fab Z Flex

Model

126-065 -- 201-125

286-125 -- 501-125

S.S.

Adapter

300715

F303759

FasNSeal Saf-T Vent

Flue

Termination

FSBS3

FSRC3(R.C)

FSBS4

FSRC4(R.C.)

Intake

Air

Termination

303889 9301PVC

FSAIH04

303888

Adapter

9401PVC

S.S.

Flue

Termination

9392

5300CI

9492

5400CI

Metal Fab

Corr/Guard

126-065 -- 201-125

286-125 -- 501-125

3CGIA

4CGIA

3CGSWHT

3CGSWC

4CGSWHT

4CGSWC

3CGSW90LT

4CGSW90LT

Intake

Air

Termination

9314TERM 2SVSLA03

9414TERM 2SVSLA04

S.S.

Adapter

Z-Vent

Flue

Termination

2SVSTP03

2SVSRCX03

2SVSTP04

2SVSRCX04

Intake Air

Termination

2SVSTEX0390

2SVSTEX0490

3 Sidewall direct venting

Vent/air termination – sidewall

Installation & Service Manual

 WARNING

Follow instructions below when determining vent location to avoid possibility of severe personal injury, death, or substantial property damage.

 WARNING

A gas vent extending through an exterior wall shall not terminate adjacent to a wall or below building extensions such as eaves, parapets, balconies, or decks. Failure to comply could result in severe personal injury, death, or substantial property damage.

Determine location

Locate the vent/air terminations using the following guidelines:

1. The total length of piping for vent or air must not exceed the limits given in the General Venting Section on page 17 of this manual.

2. You must consider the surroundings when terminating

the vent and air:

a. Position the vent termination where vapors will not damage nearby shrubs, plants or air conditioning equipment or be objectionable. b. The flue products will form a noticeable plume as they condense in cold air. Avoid areas where the plume could obstruct window views. c. Prevailing winds could cause freezing of condensate and water/ice buildup where flue products impinge on building surfaces or plants. d. Avoid possibility of accidental contact of flue products with people or pets. e. Do not locate the terminations where wind eddies could affect performance or cause recirculation, such as inside building corners, near adjacent buildings or surfaces, window wells, stairwells, alcoves, courtyards, or other recessed areas.

Figure 3-1A PVC/CPVC /Polypropylene Sidewall Termination of Air and Vent

POSSIBLE ORIENTATIONS

FROM BOILER

VENT PIPE

CONNECTION

TO BOILER

INTAKE AIR

CONNECTION

VENT / AIR

TERMINATION

GRADE OR

SNOW LINE

12"

MIN

TO OVERHANG

12"

MIN

Table 3A Sidewall Vent Kits

Model Kit Number Vent Size

126-065 -- 201-100 KIT30045 3 inch vent 286-125 -- 501-125 KIT30046 4 inch vent

If using the alternate sidewall termination:

3. The air piping must terminate in a down-turned elbow as shown in FIG. 3-1B. This arrangement avoids recirculation of flue products into the combustion air stream.

4. The vent piping must terminate in an elbow pointed outward or away from the air inlet, as shown in FIG. 3-1B.

 WARNING

Figure 3-1B Alternate PVC/CPVC/Polypropylene Sidewall Termination of Air and Vent w/Field Supplied Fittings

Do not exceed the maximum lengths of the outside vent piping shown in FIG. 3-1B. Excessive length exposed to the outside could cause freezing of condensate in the vent pipe, resulting in potential water heater shutdown.

 WARNING

Sidewall vent and air inlet terminations must terminate in the same pressure zone.

f. Do not terminate above any door or window. Condensate can freeze, causing ice formations. g. Locate or guard vent to prevent condensate damage to exterior finishes.

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