Lochinvar 1.0,1.3,1.5 User Manual

SYNC-I-O Rev I

Installation & Operation Manual

Models: 1.0 - 1.3 - 1.5

 WARNING

Save this manual for future reference.

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

Contents

HAZARD DEFINITIONS .................................................... 2

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

THE SYNC -- HOW IT WORKS...................................... 4-5

RATINGS ........................................................................... 6

1. DETERMINE BOILER LOCATION

Closet and Alcove Installations .......................................... 7

Provide Air Openings to Room .......................................... 9

Flooring and Foundation ................................................... 9

Vent and Air Piping ............................................................ 9

Prevent Combustion Air Contamination ............................. 9

Using an Existing Vent System to Install a New Boiler ... 10

Corrosive Contaminants and Sources ............................. 10

Removing a Boiler from Existing Common Vent .............. 11

Remove Boiler from Wood Pallet ..................................... 11

Combustion and Ventilation Air Requirements ........... 12-13

2. GENERAL VENTING

Direct Venting Options - Sdwl/Horz. Vent Opt. Rm Air .... 14

Direct Venting Options - Vert. Vent Opt. Rm Air ...............15

Direct Venting Options - Vert. Vent, Horz. Air ................. 16

Install Vent and Combustion Air Piping ........................... 17

PVC / CPVC Vent Piping Materials ............................ 17

PVC/CPVC Air Intake/Vent Connections ......................... 18

Air Inlet Pipe Materials ................................................ 18

Requirements for Installation in Canada .......................... 19

Installing Vent and Air Piping ........................................... 19

Stainless Steel Vent and Air Piping ................................. 20

Min./Max. Combustion Air & Vent Piping Lengths ........... 21

Vent and Air Piping .......................................................... 21

3. SIDEWALL DIRECT VENTING

Vent/Air Termination - Sidewall ................................... 22-25

Determine Location ................................................ 22-24

Prepare Wall Penetrations .......................................... 24

Termination and Fittings ............................................. 25

Multiple Vent/Air Terminations .................................... 25

4. VERTICAL DIRECT VENTING

Vent/Air Termination - Vertical .................................... 26-27

Determine Location ..................................................... 26

Prepare Roof Penetrations ......................................... 26

Termination and Fittings ........................................ 26-27

Multiple Vent/Air Terminations .................................... 27

Room Air .......................................................................... 27

5. HYDRONIC PIPING

System Water Piping Methods ......................................... 28

Low Water Cutoff Device ................................................. 28

Chilled Water System ....................................................... 28

Freeze Protection ............................................................. 28

General Piping Information .............................................. 28

Circulator Sizing ............................................................... 29

Near Boiler Piping Connections ....................................... 29

Near Boiler Piping Components .................................. 31-33

6. GAS CONNECTIONS

Connecting Gas Supply Piping ........................................ 34

Natural Gas ...................................................................... 35

Pipe Sizing for Natural Gas ........................................ 35

Natural Gas Supply Pressure Requirements ............. 35

Propane Gas .................................................................... 35

Pipe Sizing for Propane Gas ...................................... 35

Propane Supply Pressure Requirements ................... 35

Check Inlet Gas Supply .............................................. 36-37

Gas Pressure ................................................................... 37

Gas Valve Replacement .................................................. 37

7. FIELD WIRING

Line Voltage Connections ................................................ 38

Low Voltage Connections ................................................ 39

Wiring of the Cascade ...................................................... 40

8. CONDENSATE DISPOSAL

Condensate Drain ............................................................ 42

9. STARTUP ............................................................... 43-48

10. OPERATING INFORMATION

General ........................................................................ 49-51

Cascade ...................................................................... 51-52

Sequence of Operation .................................................... 53

Status Screen .............................................................. 54-55

Main Screen ..................................................................... 56

11. MAINTENANCE

Maintenance & Annual Startup .............................. 57-62

12. DIAGRAMS

Ladder Diagrams ................................................... 63-64

Wiring Diagram ........................................................... 65

Revision Notes .................................................. Back Cover

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

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.

Please read before proceeding

Installation & Operation Manual

 WARNING

NOTICE

 WARNING

Installer – Read all instructions, including this manual and the SYNC Service Manual, before installing. Perform steps in the order given.

User – This manual is for use only by a qualified heating installer/ service technician. Refer to the User’s Information Manual for your reference.

Have this boiler 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 boiler – Please have the boiler model and serial number from the boiler rating plate.

Consider piping and installation when determining boiler 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.

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

When servicing boiler –

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

• To avoid severe burns, allow boiler to cool before performing maintenance.

Boiler operation –

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

• 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 boiler 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.

Boiler water –

• Thoroughly flush the system (without boiler connected) to remove sediment. The high-efficiency heat exchanger can be damaged by build-up or corrosion due to sediment.

• Do not use petroleum-based cleaning or sealing compounds in the boiler system. Gaskets and seals in the system may be damaged. This can result in substantial property damage.

• Do not use “homemade cures” or “boiler patent medicines”. Serious damage to the boiler, personnel, and/or property may result.

This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any phone in your building.

• Immediately call your gas supplier from a 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.

• Continual fresh make-up water will reduce boiler life. Mineral buildup in the heat exchanger reduces heat transfer, overheats the stainless steel heat exchanger, and causes failure. Addition of oxygen carried in by makeup water can cause internal corrosion in system components. Leaks in boiler or piping must be repaired at once to prevent the need for makeup water.

Freeze protection fluids –

• NEVER use automotive antifreeze. Use only inhibited propylene glycol solutions, which are specifically formulated for hydronic systems. Ethylene glycol is toxic and can attack gaskets and seals used in hydronic systems.

The SYNC - How it works...

1. Access cover - front

Provides access to the gas train and the heat exchanger.

2. Air intake adapter

Allows for the connection of the PVC air intake pipe to the boiler.

3. Air pressure switches

The air pressure switches detect blocked flue/vent conditions.

4. Air shrouds (1.0 Model only)

The air shrouds control air and gas flow into the burners.

5. Automatic air vents

Designed to remove trapped air from the heat exchanger coils.

6. Blowers

The blowers pull in air and gas through the venturis (item

35). Air and gas mix inside the blowers and are pushed into the burners, where they burn inside the combustion chamber.

7. Boiler drain port

Location from which the heat exchangers can be drained.

8. Boiler inlet temperature sensors

These sensors monitor system return water temperature. If selected as the controlling sensor, the control module adjusts the boiler firing rate so the inlet temperature matches the set point.

9. Boiler outlet temperature sensors

These sensors monitor boiler outlet water temperature. If selected as the controlling sensor, the control module adjusts boiler firing rate so the outlet temperature matches the set point.

10. Burners (not shown)

Made with metal fiber and stainless steel construction, the burners use pre-mixed air and gas and provide a wide range of firing rates.

11. Condensate drain connection

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

12. Control modules

The control modules respond to internal and external signals and control the blowers, gas valves, and pumps to meet the heating demand.

13. Electronic display

Digital controls with touch screen technology and full color display.

14. Flame inspection windows

The quartz glass windows provide a view of the burner surfaces and flames.

15. Flame sensors

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

16. Flap valves

Prevents recirculation of flue products when only one burner is running.

17. Flue gas sensors

These sensors monitor the flue gas exit temperature. The control modules will modulate and shut down the boiler if the flue gas temperature gets too hot. This protects the flue pipe from overheating.

18. Flue pipe adapter

Allows for the connection of the PVC vent pipe system to the boiler.

19. Gas connection pipe

Threaded 1½" pipe connection. This pipe should be connected to the incoming gas supply for the purpose of delivering gas to the boiler.

20. Gas shutoff valves (inside unit)

Manual valves used to isolate the gas valves from the burners.

21. Gas shutoff valve (outside unit)

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

Installation & Operation Manual

22. Gas valves

The gas valves sense the negative pressure created by the blowers, allowing gas to flow only if the gas valves are powered and combustion air is flowing.

23. Heat exchanger access covers

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

24. High gas pressure switches

Switches provided to detect excessive gas pressure.

25. High limits

Devices used to monitor the outlet water temperature. If the temperature exceeds its setting, they will break the control circuit, shutting the boiler down.

26. Ignition electrodes

Provides direct spark for igniting the burners.

27. Line voltage junction box

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

28. Line voltage wiring connections (knockouts)

Conduit connection points for the high voltage junction box.

29. Low gas pressure switch

Switch provided to detect low gas pressure.

30. Low voltage connection board

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

31. Low voltage wiring connections (knockouts)

Conduit connection points for the low voltage connection board.

32. Low water cutoff device (LWCO) Device used to ensure adequate water is supplied to the boiler

and in the event of inadequate water levels, will ensure the boiler will shut down.

33. Power switch

Turns 120 VAC ON/OFF to the boiler.

34. Pump relay boards

The pump relay boards are used to connect the boiler, system and Hot Water Generator (HW) pumps.

35. Relief valve

Protects the heat exchangers from an over pressure condition. The relief valve will be set at 50 PSI.

36. Reset switch

Reset switch for the low water cutoff. Hold for 10 seconds to reset.

37. Stainless steel heat exchangers

Allows system 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.

38. Temperature and pressure gauge

Monitors the outlet temperature of the boiler as well as the system water pressure.

39. Test switch

Test switch for the low water cutoff. Hold for 10 seconds to test.

40. Top panel

Removable panel to gain access to the internal components.

41. Venturis

The venturis control air and gas flow into the burners.

42. Water inlets

Two 2" NPT water connections that return water from the system to the heat exchangers.

43. Water outlets

A 2½" NPT water connection that supplies hot water to the system.

44. O-temp switch (located underneath access cover)

Used to detect excessive temperatures on the upper coil of the heat exchanger.

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

Models 1.0 - 1.3 - 1.5

Installation & Operation Manual

Front View

1.0 Model Only

Rear View

Left Side (inside unit)

Right Side (inside unit)

Ratings

Installation & Operation Manual

SYNC

I=B=R Rating

Model Number

Note: Change “N” to

“L” for L.P. gas models.

Min Max

SBN1000 100 1000 941 818

SBN1300 130 1300 1237 1076

SBN1500 150 1500 1444 1256

NOTICE

Maximum allowed working pressure is located on the rating plate.

Input MBH

(Note 4)

Notes:

1. The ratings are based on standard test procedures prescribed by the United States Department of Energy.

2. Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building and nothing need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance of 1.15.

3. SYNC boilers require special gas venting. Use only the vent materials and methods specified in the SYNC Installation and Operation Manual.

4. Standard SYNC boilers are equipped to operate from sea level to 4,500 feet only with no adjustments. The boiler will de-rate by 4% for each 1,000 feet above sea level up to 4,500 feet.

5. High altitude SYNC boilers are equipped to operate from 3,000 to 12,000 feet only with no field adjustments. The boiler 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 boilers. A high altitude label (as shown in FIG. A) is also affixed to the unit.

Gross

Output

MBH

(Note 1)

Other Specifications

Net

I=B=R

Ratings

Water,

MBH

(Note 2)

Figure A High Altitude Label Location

Appliance

Water Content Gallons

8.4 2½" (2) - 2" 1½" 6" 6"

10.0 2½" (2) - 2" 1½" 6" 6"

11.4 2½" (2) - 2" 1½" 6" 6"

Outlet Water

Inlet

Water

Gas

Connections

Vent

Size

Air

Size

(Note 3)

UNIT EQUIPPED FOR

HIGH ALTITUDE

3,000 FT. TO 12,000 FT.

6. Ratings have been confirmed by the Hydronics Institute, Section of AHRI.

1 Determine boiler location

Installation & Operation Manual

Installation must comply with:

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

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

• Standard for Controls and Safety Devices for Automatically Fired Boilers, ANSI/ASME CSD-1, when required.

• National Electrical Code.

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

NOTICE

The SYNC gas manifold and controls met safe lighting and other performance criteria when the boiler underwent tests specified in ANSI Z21.13 – latest edition.

Before locating the boiler, check:

1. Check for nearby connection to:

• System 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. The pan must not restrict combustion air flow. 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 boiler. Remove any combustible

materials, gasoline and other flammable liquids.

 WARNING

4. The SYNC must be installed so that gas control system

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

5. If a new boiler will replace an existing boiler, check for

and correct system problems, such as:

• System leaks causing oxygen corrosion or heat exchanger cracks from hard water deposits.

• Incorrectly-sized expansion tank.

• Lack of freeze protection in boiler water causing system and boiler to freeze and leak.

Failure to keep boiler 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.

 WARNING

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 (37.8°C).

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

This appliance requires a special venting system. 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 boiler is installed in which is less than 778 cubic feet for SB1000 models, 847 cubic feet for SB1300 models, and 914 cubic feet for SB1500 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 = 9 feet long, 9 feet wide, and 9 foot ceiling = 9 x 9 x 9 = 729 cubic feet. This would be considered a closet for a SYNC Boiler.

 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" (6 mm) from combustible materials.

2. Vent pipe – at least 1" (25 mm) from combustible materials.

3. See FIG.’s 1-1 and 1-2 on page 8 for other clearance minimums.

Clearances for service access

1. See FIG.’s 1-1 and 1-2 on page 8 for recommended

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

1 Determine boiler location

Installation & Operation Manual

Figure 1-1 Closet Installation - Minimum Required Clearances

1/4” (6 MM) MINIMUM CLEARANCE

ROUND HOT WATER PIPES

1” (25 MM) MINIMUM CLEARANCE

ROUND VENT PIPES

LEFT

24" (610 MM)

REAR

RECOMMENDED SERVICE CLEARANCES:

Front - 30" (762 mm) Top - 24" (610 mm) Left Side - 24" (610 mm) Rear - 24" (610 mm)

 WARNING

For closet installations, CPVC or stainless steel 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.

4" (330 MM)

TOP

VENTILATING*

AIR OPENING

CLOSED DOOR

VENTILATING* AIR OPENING

6" (152 MM)

RIGHT

6" (152 MM)

FRONT

*AREA OF EACH OPENING: 1 SQ. INCH PER 1000 BTU PER HOUR INPUT WITH A MINIMUM OF 100 SQ. INCHES

Figure 1-2 Alcove Installation - Minimum Required Clearances

1/4” (6 MM) MINIMUM CLEARANCE

ROUND HOT WATER PIPES

1” (25 MM) MINIMUM CLEARANCE

ROUND VENT PIPES

 WARNING

For alcove installations, CPVC or stainless steel material MUST BE used in an alcove structure due to elevated temperatures. Failure to

LEFT

24" (610 MM)

REAR

follow this warning could result in fire, personal injury, or death.

13" (330 MM)

TOP

OPEN FRONT

RECOMMENDED SERVICE CLEARANCES:

Front - 30" (762 mm) Top - 24" (610 mm) Left Side - 24" (610 mm)

RIGHT

Rear - 24" (610 mm)

1 Determine boiler location (continued)

Installation & Operation Manual

Provide air openings to room:

The SYNC alone in boiler room

1. No air ventilation openings into the boiler room are needed when clearances around the SYNC are at least equal to the SERVICE clearances shown in FIG.’s 1-1 and 1-2. For spaces that do NOT supply this clearance, provide two openings as shown in FIG. 1-1. Each opening must provide one square inch free area per 1,000 Btu/hr of boiler input.

2. Combustion air openings are required when using the Room Air Option on page 27 of this manual.

The SYNC in same space with other gas or oil-fired appliances

1. Follow the National Fuel Gas Code (U.S.) or CSA B149.1 (Canada) to size/verify size of the combustion/ventilation air openings into the space.

 WARNING

2. Size openings only on the basis of the other appliances in the space. No additional air opening free area is needed for the SYNC because it takes its combustion air from outside (direct vent installation).

The space must be provided with combustion/ventilation air openings correctly sized for all other appliances located in the same space as the SYNC.

Do not install the boiler in an attic.

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

Flooring and foundation

Flooring

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

 WARNING

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

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

Vent and air piping

The SYNC requires a special vent system, designed for pressurized venting.

The boiler is to be used for either direct vent installation or for installation using indoor combustion air. When room air is considered, see Section 4, Vertical Direct Venting. Note prevention of combustion air contamination below when considering vent/air termination.

Vent and air must terminate near one another and may be vented vertically through the roof or out a side wall, unless otherwise specified. You may use any of the vent/air piping methods covered in this manual. Do not attempt to install the SYNC using any other means.

Be sure to locate the boiler such that the vent and air piping can be routed through the building and properly terminated. The vent/air piping lengths, routing and termination method must all comply with the methods and limits given in this manual.

Prevent combustion air contamination

Install air inlet piping for the SYNC as described in this manual. Do not terminate vent/air in locations that can allow contamination of combustion air. Refer to Table 1A, page 10 for products and areas which may cause contaminated combustion air.

 WARNING

Ensure that the combustion air will not contain any of the contaminants in Table 1A, page 10. Contaminated combustion air will damage the boiler, 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.

1 Determine boiler location

When using an existing vent system to install a new boiler:

 WARNING

Check the following venting components before installing:

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

Installation & Operation Manual

Table 1A Corrosive Contaminants and Sources

Products to avoid:

Spray cans containing chloro/fluorocarbons

Permanent wave solutions

Chlorinated waxes/cleaners

• Material - For materials listed for use with this appliance, see Section 2 - General Venting, Table 2A. For stainless steel venting, an adapter of the same manufacturer (Table 2B) must be used at the flue collar connection.

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

• Manufacturer - For a stainless steel application, you must use only the listed manufacturers and their type product listed in Table 2A 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 2B for the manufacturer of the installed vent.

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

Photo processing plants

• 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 Boiler Section on page 11.

With 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 19.

 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.

Auto body shops

Plastic manufacturing plants

Furniture refinishing areas and establishments

New building construction

Remodeling areas

Garages with workshops

Installation & Operation Manual

1 Determine boiler location (continued)

When removing a boiler from existing common vent system:

 DANGER

 WARNING

At the time of removal of an existing boiler, 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.

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.

Do not install the SYNC 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.

Remove boiler from wood pallet

1. After removing the outer shipping carton from the boiler, remove the parts package (packaged parts inside the jacket of the boiler).

2. To remove the boiler from the pallet:

a. Remove the front door of the boiler. b. Remove the two lag bolts from the wood pallet inside the boiler (FIG. 1-3). c. Detach the boiler from the lag bolts in the rear of the unit, see FIG. 1-3.

NOTICE

Figure 1-3 Boiler Mounted on Shipping Pallet

LAG BOLTS

(QTY. 3)

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. The clearance labels on each appliance note the same service and combustible clearance requirements as shown in this manual.

Multiple appliances may be installed in a modular boiler 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 and no service access is required from the sides.

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

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

REAR

LAG BOLTS

(QTY. 3)

FRON

1 Determine boiler location

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.

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

Installation & Operation Manual

Figure 1-5_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. 1-5).

Figure 1-4_Combustion Air Direct from Outside

1. If air is taken directly from outside the building with no duct, provide two permanent openings to the equipment room (see FIG. 1-4):

(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.

IF NECESSARY

FOR TIGHT

CONSTRUCTION

Figure 1-6_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. 1-6).

1 Determine boiler location (continued)

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 below (Table 1B). Single openings shall commence within 12" (30cm) of the ceiling.

 CAUTION

The combustion air supply must be completely free of any flammable vapors that may ignite or chemical fumes which may

Figure 1-7_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. 1-7).

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.

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 corrected immediately.

Installation & Operation Manual

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.

TABLE - 1B

MINIMUM RECOMMENDED COMBUSTION

AIR SUPPLY TO EQUIPMENT ROOM

FIG. 1-4 FIG. 1-5 FIG. 1-6 FIG. 1-7

Model

Number

1.0

1.3

1.5

*Outside Air from

2 Openings Directly from

Outdoors

Top

Opening, in

250

(1613 cm2)

325

(2097 cm2)

375

(2420 cm

Opening, in

(1613 cm2)

(2097 cm2)

)

(2420 cm2)

Bottom

250

325

375

*Outside Air from

2 Ducts Delivered from

Outdoors

Top

Opening, in

Bottom

500

(3226 cm2)

650

(4194 cm2)

750

(4839 cm2)

500

650

750

**Inside Air from

2 Ducts Delivered from

Interior Space

Top

Opening, in

1000

(6452 cm2)

1300

(8388 cm2)

1500

(9678 cm2)

Bottom

Opening, in

1000

(6452 cm2)

1300

(8388 cm2)

1500

(9678 cm2)

*Outside Air from 1 Opening Directly from Outdoors, in

333

(2149 cm2)

433

(2794 cm2)

500

(3226 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 appliance 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 appliance 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).

2 General venting

Direct venting options - Sidewall Vent

Installation & Operation Manual

PVC/CPVC Two Pipe

See Figure 3-1A

Sidewall Vent Optional Room Air

Stainless Steel

Two Pipe

See Figure 3-2

PVC/CPVC

Room Air

See Figure 4-5

Stainless Steel

Room Air

See Figure 4-5

2 General venting (continued)

Direct venting options - Vertical Vent

Installation & Operation Manual

PVC/CPVC

Two Pipe

See Figure 4-1

Vertical Vent Optional Room Air

Stainless Steel

Two Pipe

See Figure 4-2

PVC/CPVC

Room Air

See Figure 4-5

Stainless Steel

Room Air

See Figure 4-5

Installation & Operation Manual

2 General venting

Direct venting options - Vertical Vent, Sidewall Air

PVC/CPVC

Vertical Vent, Sidewall Air

Stainless Steel

Vertical Vent, Sidewall Air

2 General venting (continued)

Install vent and combustion air piping

Installation & Operation Manual

 DANGER

The SYNC 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.

PVC/CPVC vent piping materials

 WARNING

NOTICE

 WARNING

NOTICE

 WARNING

Use only the materials listed in Table 2A on page 19 for vent pipe, and fittings. Failure to comply could result in severe personal injury, death, or substantial property damage.

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 material MUST BE used in a closet/alcove structure. Failure to follow this warning could result in fire, personal injury, or death.

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 boiler (to allow drainage of condensate).

This appliance requires a special venting system. 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.

 WARNING

Figure 2-1A CPVC Starter Vent - Horizontal

CPVC PIPE

Figure 2-1B CPVC Starter Vent - Vertical

CPVC ELBOW

For all installations, the first ten (10) equivalent feet of vent must be CPVC or stainless steel (see FIG.’s 2-1A and 2-1B below). Failure to follow this warning could result in fire, personal inury, or death.

CPVC ELBOW

CPVC PIPE

2 General venting

Installation & Operation Manual

PVC/CPVC air intake/vent connections

1. Combustion Air Intake Connector (FIG. 2-2) - 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. 2-2) - 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 2-2 Near Boiler PVC/CPVC Venting

VENT

PVC/CPVC ADAPTER FACTORY INSTALLED

AIR

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 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.

 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 sheet metal screws or pop rivets. Apply Aluminum Foil Duct Tape or silicone sealant to all screws or rivets installed in the vent pipe.

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

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.

Using vent or air intake materials other than those specified, failure to properly seal all seams and joints or failure to follow vent pipe manufacturer’s instructions can result in personal injury, death or property damage. Mixing of venting materials will void the warranty and certification of the appliance.

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.

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

2 General venting (continued)

Requirements for installation in Canada

Installation & Operation Manual

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

IPEX is an approved vent manufacturer in Canada supplying vent material listed 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.

 CAUTION

Improper installation of PVC or CPVC systems may result in injury or death.

Installing vent and air piping

NOTICE

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

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

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. c. Apply a liberal even coat of primer to the pipe end to approximately 1/2" beyond the socket depth. d. Apply a second primer coat to the fitting socket. e. While primer is still wet, apply an even coat of approved cement to the pipe equal to the depth of the fitting socket. f. While primer is still wet, apply an even coat of approved cement to the fitting socket. g. Apply a second coat of cement to the pipe. h. 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. i. Wipe excess cement from the joint removing ring or beads as it will needlessly soften the pipe.

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.)

Table 2A PVC, Vent Pipe, and Fittings

All vent pipe materials and fittings must comply with the following:

Item Material

PVC Plastic Pipe, Schedules 40, 80, & 120 ANSI/ASTM D1785

PVC Plastic Pipe Fittings, Schedule 40 ANSI/ASTM D2466

Vent pipe

and fittings

PVC Plastic Pipe Fittings, Schedule 80 ANSI/ASTM D2467

PVC - DWV Pipe and Fittings ANSI/ASTM D2665

CPVC Plastic Pipe, Schedule 40 & 80 ANSI/ASTM F441

CPVC Plastic Pipe Fittings, Schedule 80 ANSI/ASTM F439

AL29-4C UL1738 ULC-S636

Standards for installation in:

United States Canada

CPVC and PVC venting must be

ULC-S636 Certified. IPEX is an

approved manufacturer in Canada

supplying vent material listed to

ULC-S636.

2 General venting

Installation & Operation Manual

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.

Stainless steel vent and air piping

This product has been approved for use with stainless steel FasNseal vent systems manufactured by Dura-vent. Lochinvar offers a matching stainless steel sidewall vent termination kit, see Table 3A on page 22.

 WARNING

NOTICE

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

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.

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

NOTICE

The installer must use a specific vent starter adapter supplied by the vent manufacturer to adapt to different vent systems. See Table 2B for approved vent adapters.

Stainless steel air intake/vent connections

1. Combustion Air Intake Connector (FIG. 2-3) - 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. 2-3) - 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 2-3 Near Boiler Stainless Steel Venting

NOTICE

PVC/CPVC or ABS is acceptable air inlet pipe material.

REMOVE PVC/CPVC VENT CONNECTOR WHEN INSTALLING STAINLESS STEEL

Table 2B Approved Stainless Steel Terminations and Adapters

STAINLESS STEEL VENT TERMINATION KITS

Kit Part Number Model Component Description

6" PVC x 6" Stainless Steel

Adapter

KIT30028 SB 1000 - 1500

KIT30029 SB 1300 - 1500

6" Stainless Steel Vent

Termination

6" Stainless Steel Air Inlet

6" PVC x 6" Stainless Steel

Adapter

6" Stainless Steel x 7"

Stainless Steel Adapters (2)

7" Stainless Steel Vent

Termination

7" Stainless Steel Air Inlet

The SYNC uses model specific combustion air intake and vent piping sizes as detailed in Tables 2C and 2D on page 21.

NOTICE

Increasing or decreasing combustion air or vent piping to sizes not specified in this manual is not authorized.

Installation & Operation Manual

2 General venting (continued)

Table 2C Direct Vent Minimum / Maximum Allowable Air / Vent Lengths

Model

SB 1000 6" 12’ 100’ 6" 12’ 100’ 1.25% SB 1300 6" 12’ 50’ 6" 12’ 50’ 2.90%

SB 1300 7" 12’ 100’ 7" 12’ 100’ 0.95% SB 1500 6" 12’ 50’ 6" 12’ 50’ 3.30% SB 1500 7" 12’ 100’ 7" 12’ 100’ 1.65%

Table 2D Room Air Minimum / Maximum Allowable Air / Vent Lengths

Note: When using a 7" vent or air pipe, a field supplied increaser is required.

When determining equivalent combustion air and vent length, add 5 feet (1.5m) for each 90° elbow and 3 feet (.9 m) for each 45° elbow.

Air Intake

Diameter

Model

SB 1000 6" 12’ 100’ 0.63% SB 1300 6" 12’ 100’ 1.45%

SB 1500 6" 12’ 100’ 1.65%

Air Intake

Min. Length

Vent

Diameter

Air Intake

Max. Length

Min. Length

Vent

Diameter

Vent

Vent, air piping and termination:

The SYNC 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.

Vent

Min. Length

Vent

Max. Length

Vent

Max. Length

Input De-Rate per

25 feet of Vent

De-Rate per

25 feet of Vent

Input

EXAMPLE: 20 feet (6 m) of PVC pipe + (4) 90° elbows + (3) 45° elbows = 49 equivalent feet (15 m) of piping.

Removing from existing vent

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

Vent and air piping

Vent and air system:

NOTICE

You must also install air piping from outside to the boiler air intake adapter. The resultant installation is direct vent (sealed combustion).

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

 WARNING

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.

DO NOT mix components from different systems. The vent system could fail, causing leakage of flue products into the living space. Use only approved stainless steel, PVC or CPVC pipe and fittings. For PVC/CPVC use with primer and cement specifically designed for the material used.

Air contamination

Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds. When these chemicals pass through the boiler, they can form strong acids. The acid can eat through the boiler wall, causing serious damage and presenting a possible threat of flue gas spillage or boiler 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 boiler combustion air inlet, have your installer pipe the boiler combustion air and vent to another location, per this manual.

 WARNING

If the boiler 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 boiler or air inlet piping.

If contaminants are found, you MUST:

• Remove products permanently. —OR—

• Relocate air inlet and vent terminations to other areas.

3 Sidewall direct venting

Installation & Operation Manual

Vent/air termination – sidewall

 WARNING

NOTICE

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 21 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.

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

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.

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

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.

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

Note: Available in 6" diameter only.

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 CPVC/PVC Sidewall Vent Kits

Model Kit Number Vent Size

1.0 - 1.5

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 Sidewall Termination of Air and Vent w/Field Supplied Fittings

KIT30047 6 inch vent

Do not exceed the maximum lengths of the outside vent piping shown in FIG.’s 3-1B and 3-1C. Excessive length exposed to the outside could cause freezing of condensate in the vent pipe, resulting in potential boiler 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.

3 Sidewall direct venting (continued)

Installation & Operation Manual

Vent/air termination – sidewall

Figure 3-1C Alternate Stainless Steel Sidewall Termination w/Field Supplied Fittings

NOTICE

TO BOILER INTAKE AIR CONNECTION

FROM BOILER VENT PIPE CONNECTION

Table 3B Stainless Steel Sidewall Vent Kits

Model Kit Number Vent Size

1.0 - 1.5

1.3 - 1.5

5. Maintain clearances as shown in FIG.’s 3-1A thru 3-4B, pages 22 and 24. Also maintain the following:

a. Vent must terminate:

• No closer than 12 inches (305 mm) below roof overhang.

• At least 7 feet (2.1 m) above any public walkway.

• At least 3 feet (.9 m) above any forced air intake within 10 feet (3 m).

• No closer than 12 inches (305 mm) below or horizontally from any door or window or any other gravity air inlet. b. Air inlet must terminate at least 12 inches (305 m) above grade or snow line; at least 12 inches (305 mm) below the vent termination; and the vent pipe must not extend more than 24 inches (610 mm) vertically outside the building as shown in FIG.’s 3-1B and 3-1C. c. Do not terminate closer than 4 feet (1.2 m) horizontally from any electric meter, gas meter, regulator, relief valve, or other equipment. Never terminate above or below any of these within 4 feet (1.2 m) horizontally.

PVC/CPVC or ABS is acceptable air inlet pipe material.

12" (305 MM) MIN

15" (381 MM) MAX

12" (305 MM) MIN

KIT30028

(Stainless Steel)

KIT30029

(Stainless Steel)

6 inch vent

7 inch vent

• At least 6 feet (1.8 m) from adjacent walls.

Figure 3-2A Clearance to Gravity Air Inlets

12"

MIN.

VENT / AIR

TERMINATION

12"

MIN.

12"

MIN.

Figure 3-2B Alternate Clearance to Gravity Air Inlets w/Field Supplied Fittings

12” (305 MM)

MIN

BIRD

SCREEN

(TYPICAL)

12” (305 MM)

MIN

12” (305 MM)

MIN

Figure 3-3A Clearance to Forced Air Inlets

IF LESS

THAN 10’

VENT / AIR

TERMINATION

7' MIN. ABOVE ANY

PUBLIC WALKWAY

36"

MIN.

FORCED AIR

INLET

6. Locate terminations so they are not likely to be damaged by foreign objects, such as stones or balls, or subject to buildup of leaves or sediment.

3 Sidewall direct venting

)

Installation & Operation Manual

Figure 3-3B Alternate Clearance to Forced Air Inlets w/ Field Supplied Fittings

IF LESS

THAN 10’ (3 M)

36” (914 MM)

MIN

FORCED AIR

INLET

BIRD

SCREEN

(TYPICAL)

7’ (2.1 M) MIN ABOVE ANY

PUBLIC WALKWAY

Prepare wall penetrations

1. Use the factory supplied wall plate as a template to locate the vent and air intake holes and mounting holes.

Air pipe penetration:

a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter.

Vent pipe penetration:

a. Cut a hole for the vent pipe. For either combustible or noncombustible construction, size the vent pipe hole with at least a 1/2 inch clearance around the vent pipe outer diameter:

• 7½ inch hole for 6 inch vent pipe

• 8½ inch hole for 7 inch vent pipe

Drill 3/16" diameter holes for inserting the plastic anchors into the wall.

2. Install the vent and air intake piping through the wall into the vent plate openings. Seal all gaps between the pipes and wall. Use RTV silicone sealant to seal the air pipe. Use the cement/primer listed in Table 2A on page 19 to seal the vent pipe.

3. Mount and secure the vent plate to the wall using stainless steel screws. Seal around the plate to the wall assuring no air gaps.

4. Assemble the vent cap to the vent plate (see FIG. 3-4A). Insert the stainless steel screws into the vent cap screw hole openings and securely attach the vent cap to the vent plate.

5. Seal all wall cavities.

Figure 3-4A Sidewall Termination Assembly (PVC/CPVC)

AIR PIPING

VENT PIPING

WALL PLATE

GALVANIZED

THIMBLE

VENT PLATE

VENT CAP

Prepare wall penetrations (Alternate Field Supplied Options)

1. Air pipe penetration (see FIG. 3-4B): a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter.

2. Vent pipe penetration (see FIG. 3-4B): a. Cut a hole for the vent pipe. For either combustible or noncombustible construction, size the vent pipe hole with at least a 1/2 inch clearance around the vent pipe outer diameter:

• 7½ inch (178 mm) hole for 6 inch (152 mm) vent pipe

• 8½ inch (203 mm) hole for 7 inch (178 mm) vent pipe

b. Insert a galvanized metal thimble in the vent pipe hole (when required by local codes).

3. Use a sidewall termination plate as a template for correct

location of hole centers.

4. Follow all local codes for isolation of vent pipe when

passing through floors or walls.

5. Seal exterior openings thoroughly with exterior caulk.

Figure 3-4B Alternate Sidewall Termination Assembly PVC/CPVC or Stainless Steel

SIDEWALL

TERMINATION PLATE

VENT

PIPING

GALVANIZED THIMBLE

(WHEN REQUIRED BY LOCAL CODES

ELBOW

AIR PIPING

BIRD SCREEN

ELBOW

BIRD SCREEN

3 Sidewall direct venting (continued)

Installation & Operation Manual

Termination and fittings

1. The air termination coupling must be oriented at least 12 inches above grade or snow line as shown in FIG. 3-1A, page 22.

2. Maintain the required dimensions of the finished termination piping as shown in FIG. 3-1A, page 22.

3. If using a stainless steel sidewall termination do not extend exposed vent pipe outside of the building more than what is shown in this document. Condensate could freeze and block vent pipe.

4. PVC/CPVC terminations are designed to accommodate any wall thickness of standard constructions per the directions found in this manual.

5. Stainless steel terminations are designed to penetrate walls with a thickness up to 9.25 inches of standard construction.

Multiple vent/air terminations

1. When terminating multiple SYNC boilers terminate each vent/air connection as described in this manual (FIG. 3-5A).

 WARNING

2. Place wall penetrations to obtain minimum clearance of 12 inches (305 mm) between vent pipe and adjacent air inlet elbow, as shown in FIG. 3-5A for U.S. installations. For Canadian installations, provide clearances required by CSA B149.1 Installation Code.

All vent pipes and air inlets must terminate at the same height to avoid possibility of severe personal injury, death, or substantial property damage.

Figure 3-5B Alternate Multiple Vent Terminations w/Field Supplied Fittings (must also comply with Figure 3-1B)

VENT

12” (305 MM) MIN 15” (381 MM) MAX

12” (305 MM) MIN. BETWEEN EDGE OF AIR PIPE AND ADJACENT VENT PIPE

AIR

3. The air inlet of a SYNC is part of a direct vent connection. It is not classified as a forced air intake with regard to spacing from adjacent boiler vents.

Figure 3-5A Multiple Vent Terminations (must also comply with Figure 3-1A)

12" MIN. BETWEEN EDGE OF AIR

INLET AND ADJACENT VENT OUTLET

VENT

AIR

VENT / AIR

TERMINATION

4 Vertical direct venting

Vent/air termination – vertical

Installation & Operation Manual

 WARNING

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

 WARNING

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

NOTICE

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.

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 21 of this manual.

2. The vent must terminate at least 3 feet above the highest place in which the vent penetrates the roof and at least 2 feet above any part of a building within 10 horizontal feet.

3. The air piping must terminate in a down-turned 180° return pipe no further than 2 feet (.6 m) from the center of the vent pipe. This placement avoids recirculation of flue products into the combustion air stream.

4. The vent piping must terminate in an up-turned coupling as shown in FIG. 4-1. The top of the coupling must be at least 1 foot above the air intake. When the vent termination uses a rain cap as illustrated in FIG. 4-2 maintain at least 36" (914 mm) above the air inlet. The air inlet pipe and vent pipe can be located in any desired position on the roof, but must always be no further than 2 feet (.6 m) apart and with the vent termination at least 1 foot above the air intake.

 WARNING

Figure 4-1 PVC/CPVC Vertical Termination of Air and Vent

BIRD SCREEN (TYPICAL)

COUPLING (FIELD SUPPLIED)

VENT OUTLET 12" MINIMUM ABOVE AIR INLET

Rooftop vent and air inlet terminations must terminate in the same pressure zone, unless vertical vent sidewall air is set up as shown in the General Venting - Vertical Vent, Sidewall Air Section.

ALTERNATE INTAKE LOCATIONS: INTAKE PIPES MAY BE LOCATED ANYWHERE WITHIN 24" (610 MM) OF VENT PIPE

VENT

6" (152 MM) MINIMUM ABOVE ROOF / SNOW LINE

COMBUSTION AIR

Figure 4-2 Stainless Steel Vertical Termination of Air and Vent

ALTERNATE INTAKE LOCATIONS: INTAKE PIPES MAY BE LOCATED ANYWHERE WITHIN 24” (610 MM) OF VENT PIPE

BIRD SCREEN

(TYPICAL)

6" (152 MM) MINIMUM

ABOVE ROOF /

SNOW LINE

VENT OUTLET

36” (914 MM) MINIMUM

ABOVE AIR INLET

VENT

COM,BUSTION AIR

5. Locate terminations so they are not likely to be damaged by foreign objects, such as stones or balls, or subject to buildup of leaves or sediment.

Prepare roof penetrations

1. Air pipe penetration:

a. Cut a hole for the air pipe. Size the air pipe hole as close as desired to the air pipe outside diameter.

2. Vent pipe penetration:

a. Cut a hole for the vent pipe. For either combustible or noncombustible construction, size the vent pipe hole with at least a 1/2 inch clearance around the vent pipe outer diameter:

• 7½ inch (178 mm) hole for 6 inch (152 mm) vent

pipe

• 8½ inch (203 mm) hole for 7 inch (178 mm) vent pipe

b. Insert a galvanized metal thimble in the vent pipe hole (when required by local codes).

3. Space the air and vent holes to provide the minimum spacing shown in FIG.’s 4-1 and 4-2.

4. Follow all local codes for isolation of vent pipe when passing through floors, ceilings, and roofs.

5. Provide flashing and sealing boots sized for the vent pipe and air pipe.

Termination and fittings

1. Prepare the vent termination coupling and the air

termination elbow (FIG.’s 4-1 and 4-2) by inserting bird screens. Bird screens should be obtained locally.

2. The air piping must terminate in a down-turned 180° return bend as shown in FIG.’s 4-1 and 4-2. Locate the air inlet pipe no further than 2 feet (.6 m) from the center of the vent pipe. This placement avoids recirculation of flue products into the combustion air stream.

4 Vertical direct venting (continued)

Installation & Operation Manual

3. The vent piping must terminate in an up-turned coupling as shown in FIG. 4-1. The top of the coupling must be at least 1 foot (.3 m) above the air intake. When the vent termination uses a rain cap as illustrated in FIG. 4-2 maintain at least 36" (914 mm) above the air inlet. The air inlet pipe and vent pipe can be located in any desired position on the roof, but must always be no further than 2 feet (.6 m) apart and with the vent termination at least 1 foot (.3 m) above the air intake.

4. Maintain the required dimensions of the finished termination piping as shown in FIG.’s 4-1 and 4-2.

5. Do not extend exposed vent pipe outside of building more than shown in this document. Condensate could freeze and block vent pipe.

Multiple vent/air terminations

1. When terminating multiple SYNC boilers, terminate each vent/air connection as described in this manual (FIG. 4-3).

 WARNING

2. Place roof penetrations to obtain minimum clearance of 12 inches (305 mm) between edge of air intake elbow and adjacent vent pipe of another boiler for U.S. installations (see FIG. 4-3). For Canadian installations, provide clearances required by CSA B149.1 Installation Code.

3. The air inlet of a SYNC boiler is part of a direct vent connection. It is not classified as a forced air intake with regard to spacing from adjacent boiler vents.

Terminate all vent pipes at the same height and all air pipes at the same height to avoid recirculation of flue products and the possibility of severe personal injury, death, or substantial property damage.

Figure 4-4 Alternate Vertical Terminations with Multiple Boilers

VENT

12" (305 MM) MINIMUM VERTICALLY FROM VENT OUTLET TO ANY AIR INLET

AIR

Room air

The SYNC boiler may be installed with a single pipe carrying the flue products to the outside while using combustion air from the equipment room.

Follow the requirements in the General Venting, Sidewall Direct Venting, and Vertical Direct Venting sections for vent material specifications, vent length requirements, and vent termination requirements.

Combustion and ventilation air must be supplied to the equipment room per the requirements on pages 12 and 13 of this manual for proper operation of the SYNC boiler when utilizing the single pipe method.

Figure 4-5 Room Air Installation

NOTICE

FOR DIRECT VENT SYSTEMS REMOVE AIR INLET COVER AND INSTALL RUBBER COUPLING FOR PVC / CPVC VENT SYSTEMS OR STAINLESS STEEL ADAPTER FOR STAINLESS STEEL VENT SYSTEMS

Figure 4-3 Vertical Terminations with Multiple Boilers

12" (305 MM) MINIMUM VERTICALLY FROM VENT

VENT

AIR

VENT

AIR

OUTLET TO ANY AIR INLET

12" (305 MM) MINIMUM FROM EDGE OF AIR INTAKE PIPE TO ADJACENT VENT PIPE FROM ANOTHER BOILER

5 Hydronic piping

Installation & Operation Manual

System water piping methods

The SYNC is designed to function in a closed loop pressurized system not less than 12 psi (83 kPa). A temperature and pressure gauge is included to monitor system pressure and outlet temperature and should be located on the boiler outlet.

It is important to note that the boiler has a pressure drop which must be figured in when sizing the circulators. Each boiler installation must have an air elimination device, which will remove air from the system. Install the boiler so the gas ignition system components are protected from water (dripping, spraying, etc.) during appliance operation or basic service of circulator replacement, valves, and others.

Observe a minimum of 1/4 inch (6 mm) clearance around all un-insulated hot water pipes when openings around the pipes are not protected by non-combustible materials.

Low water cutoff device

An electronic low water cutoff is provided as standard equipment on all models. The low water cutoff should be inspected every 6 months.

Chilled water system

If the boiler supplies hot water to heating coils in air handler units, flow control valves or other devices must be installed to prevent gravity circulation of heater water in the coils during the cooling cycle. A chilled water medium must be piped in parallel with the heater.

Freeze protection

Freeze protection for new or existing systems must use glycol that is specially formulated for this purpose. This includes inhibitors, which prevent the glycol from attacking the metallic system components. Make certain to check that the system fluid is correct for the glycol concentration and inhibitor level. The system should be tested at least once a year and as recommended by the producer of the glycol solution. Allowance should be made for the expansion of the glycol solution in the system piping.

General piping information

Basic steps are listed below along with illustrations on the following pages (FIG.’s 5-5 and 5-6), which will guide you through the installation of the SYNC (reference FIG.s 5-1A and 5-1B).

1. Connect the system returns marked “Inlet”, make sure to install with pipe sealant compound.

2. Connect the system supply marked “Outlet”, make sure to install with pipe sealant compound.

3. Install purge and balance valve or shutoff valve and drain on system return to purge air out of each zone.

4. Install a backflow preventer on the cold feed make-up water line.

5. Install a pressure reducing valve on the cold feed make-up water line, (15 psi (103 kPa) nominal). Check temperature and pressure gauge (shipped separately), which should read a minimum pressure of 12 psi (83 kPa).

6. Install the circulators as shown on the piping diagrams in this section. Make sure the circulators are properly sized for the system and friction loss. Install check valves with each boiler circulator.

7. Install an expansion tank on the system supply. Consult the tank manufacturer’s instruction for specific information relating to tank installation. Size the expansion tank for the required system volume and capacity.

8. Install an air elimination device on the system supply.

9. Install a drain valve at the lowest point of the system. Note: The boiler cannot be drained completely of water without purging the unit with an air pressure of 15 psi (103 kPa).

10. This appliance is supplied with a relief valve sized in accordance with ASME Boiler and Pressure Vessel Code, Section IV (“Heating Boilers”). The safety relief valve is installed at the factory and is located on the rear of the boiler. Pipe the discharge of the safety relief valve to prevent injury in the event of pressure relief. Pipe the discharge to a drain. Provide piping that is the same size as the safety relief valve outlet. Never block the outlet of the safety relief valve.

 WARNING

Use only inhibited propylene glycol solutions, which are specifically formulated for hydronic systems. Ethylene glycol is toxic and can attack gaskets and seals used in hydronic systems.

11. On any pre-existing system, it is good practice to install a field supplied strainer to prevent damage to the heat exchanger.

See the piping illustrations included in this section, FIG.’s 5-5 and 5-6 for suggested guidelines in piping the SYNC.

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

Installation & Operation Manual

5 Hydronic piping (continued)

Circulator sizing

The SYNC heat exchanger does have a pressure drop, which must be considered in your system design. Refer to the graph in FIG. 5-4 for pressure drop through the SYNC heat exchanger.

Near boiler piping connections

Figure 5-1A Near Boiler Piping w/Y-Strainer

DRAIN (TYPICAL)

SYSTEM SUPPLY SENSOR (NOTICE: A SYSTEM SUPPLY SENSOR MUST BE INSTALLED FOR PROPER BOILER OPERATION.)

SYSTEM PUMP

ISOLATION VALVE

(TYPICAL)

Y-STRAINER

(RECOMMENDED)

(TYPICAL)

HEAT EXCHANGER 1

BOILER PUMP

HEAT EXCHANGER 2

BOILER PUMP

CHECK VALVE

(TYPICAL)

Figure 5-1B Near Boiler Piping w/Low Loss Header

DRAIN VALVE

ISOLATION VALVE

(TYPICAL)

HEAT EXCHANGER 1 BOILER PUMP

TO FLOOR DRAIN

TEMPERATURE GAUGE

RELIEF VALVE

AIR VENT VALVE

LOW LOSS HEADER

(TYPICAL)

EXPANSION TANK

DRAIN

(TYPICAL)

AIR SEPARATOR SYSTEM SENSOR

SYSTEM PUMP

TO SYSTEM

FROM SYSTEM

HEAT EXCHANGER 2 BOILER PUMP

CHECK VALVE

(TYPICAL)

TO FLOOR

DRAIN

Y-STRAINER

(RECOMMENDED)

TEMPERATURE GAUGE

RELIEF VALVE

Installation & Operation Manual

5 Hydronic piping

Hot Water Generator pump sizing

The SYNC has two (2) heat exchangers that require two (2) individual pumps for proper installation in the boiler loop and an additional two (2) pumps for the Hot Water Generator loop.

Hot Water Pump Head Loss = Ft. of Head for Heat Exchanger 1 (at required flow) + Ft. of Head for the Hot Water Generator (at 2 X the flow of Heat Exchanger 1)

Example:

Boiler: SB1500 A T of 30° requires a flow through each heat exchanger of 51 GPM. The heat exchanger head loss is 18 ft. of head (see Table 5A).

Coupled with a Lochinvar Hot Water Generator with a 8-42 (diameter-length) tube bundle the calculated pressure drop is

1.2 Ft. of Head at 102 GPM.

Hot Water Pump Head Loss = 18 Ft/Hd (51 GPM) + 1.2 Ft/Hd (102 GPM) = 19.2 Ft/Hd

A pump will need to be selected to flow 51 GPM with a head loss of 19.2 Ft/Hd.

Figure 5-2 Boiler Schematic

O SYSTEM

FROM SYSTEM

HEAT EXCHANGER 2 BOILER PUMP

HOT WATER

GENERATOR

HEAT EXCHANGER 1 HOT WATER PUMP

102 GPM

HEAT EXCHANGER 2 HOT WATER PUMP

Figure 5-3 Pump Configuration

51 GPM

102 GPM

51 GPM

HEAT EXCHANGER 1 BOILER PUMP

AIR COVER

FROM SYSTEM

TO BOILER

INLETS

FROM SYSTEM

TO BOILER

INLETS

5 Hydronic piping (continued)

0 102030 405060708090

SB1500

SB1300

SB1000

Figure 5-4 Pressure Drop vs. Flow

Single Heat Exchanger Only

Pressure Drop (Feet of Head)

Table 5A Sizing Information for Temperature Rise Applications_20°F, 25°F, 30°F and 35°F

Model

1000 2½" 55 31 40 20 38 18 32 13 1300 2½" 65* 30 52 20 45 16 37 11 1500 2½" 74* 33 60 23 51 18 42 12

NOTICE

Near boiler piping components

1. Boiler piping:

Boiler system piping MUST be sized per the pipe requirements listed in Table 5A. Reducing the pipe size can restrict the flow rate through the boiler, causing inadvertent high limit shutdowns and poor system performance.

2. Boiler circulating pump:

Field supplied. The boiler circulating pump MUST be sized to meet the specified minimum flow requirements listed in FIG. 5-4.

3. Hot Water Generator circulating pump:

Field supplied. The pump MUST be sized to meet the specified minimum flow requirements listed in FIG. 5-4. Consult the indirect boiler operating guide to determine flow characteristics for the selected product used.

4. Boiler isolation valves:

Field supplied. Full port ball valves are required. Failure to use full port ball valves could result in a restricted flow rate through the boiler.

MINIMUM PIPE

SIZE

GPM FT/HD GPM FT/HD GPM FT/HD GPM FT/HD

Pump sizing and flow requirements are based on 20 feet (6 m) of black iron piping, 4

- 90° elbows, and 2 - fully ported ball valves.

*When using copper with a 20° temperature rise increase piping to 3".

It is required that near boiler piping systems utilize Primary/Secondary configurations as shown in FIG.’s 5-5 and 5-6 only. The use of other near boiler piping configurations could result in improper building and system flow rates leading to inadvertent boiler high limit shutdowns and poor system performance.

Installation & Operation Manual

Pressure Drop vs Flow

Flow Rate (GPM) - Single Heat Exchanger Only

TEMPERATURE RISE APPLICATIONS

20°F 25°F 30°F 35°F

5. Check valves:

Field supplied. Check valves are required for installation as shown in FIG.’s 5-5 and 5-6. Failure to install check valves could result in a reverse flow condition during pump(s) off cycle.

6. Domestic indirect hot water isolation valves:

Field supplied. Full port ball valves are required. Failure to use full port ball valves could result in a restricted flow rate through the boiler.

7. Anti-scald mixing valve:

Field supplied. An anti-scald mixing valve is recommended when storing domestic hot water above 115°F (46°C).

8. Unions:

Field supplied. Recommended for unit serviceability.

9. Pressure relief valve:

Factory supplied. The pressure relief valve is sized to ASME specifications.

10. System temperature sensor:

Lochinvar supplies a system temperature sensor. The sensor is to be installed in the heating loop downstream from the boiler hot water piping and heating loop junction. The sensor should be located far enough downstream to sense system diluted water temperature.

NOTICE

11. Y-Strainer:

Field supplied. A Y-strainer or equivalent multipurpose strainer is recommended at the inlet of the heat exchanger to remove system particles from older hydronic systems and protect newer systems.

A system supply sensor (factory supplied) MUST BE installed for proper boiler operation.

5 Hydronic piping

Figure 5-5 Single Boiler - Primary/Secondary Piping

Installation & Operation Manual

MAY SUBSTITUTE LOW LOSS HEADER

HOT WATER GENERATOR

NOTICE

A system supply sensor (factory supplied) MUST BE installed for proper boiler operation.

BALL VALVE (TYPICAL)

AIR SEPERATOR

DRAIN POINT (TYPICAL)

SYSTEM SUPPLY SENSOR

SYSTEM CIRCULATOR

PRESSURE GAUGE

BACK FLOW PREVENTER

MAKE UP WATER

PRESSURE REDUCING (VALVE)

NOTICE

EXPANSION TANK

WATER GENERATOR CIRCULATOR (TYPICAL)

HEAT EXCHANGER 1 BOILER PUMP

HEAT EXCHANGER 2 BOILER PUMP

FLOW CHECK VALVE (TYPICAL)

TO FLOOR DRAIN

UNION (TYPICAL)

TEMPERATURE/ PRESSURE GAUGE

PRESSURE RELIEF VALVE

Y-STRAINER

(RECOMMEND)

(TYPICAL)

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

System flow should always remain higher than the required flow for the boiler(s) when the boiler(s) is in operation to prevent short cycling and high limit issues.

5 Hydronic piping (continued)

Figure 5-6 Multiple Boilers - Primary/Secondary Piping

Model

1000 1300 1500

2345678

Manifold Pipe Sizes in Inches (mm)

4 (102) 5 (127) 6 (152) 6 (152) 8 (203) 8 (203) 8 (203) 5 (127) 5 (127) 6 (152) 8 (203) 8 (203) 8 (203) 8 (203) 5 (127) 6 (152) 6 (152) 8 (203) 8 (203) 8 (203) 10 (254)

Installation & Operation Manual

Number of Units

HOT WATER GENERATOR

WATER GENERATOR CIRCULATOR (TYPICAL)

FLOW CHECK VALVE ( TYPICAL)

NOTICE

A system supply sensor (factory supplied) MUST BE installed for proper boiler operation.

(RECOMMENDED)

PRESSURE GAUGE

HEAT EXCHANGER 1 BOILER PUMP

Y-STRAINER

TYPICAL)

EXPANSION TANK

HEAT EXCHANGER 2 BOILER PUMP

MAY SUBSTITUTE LOW LOSS HEADER

BALL VALVE (TYPICAL)

AIR SEPARATOR

DRAIN POINT (TYPICAL)

SYSTEM SUPPLY SENSOR

SYSTEM CIRCULATOR

BACK FLOW PREVENTER

MAKE UP WATER

TEMPERATURE/ PRESSURE GAUGE

PRESSURE RELIEF VALVE

TO FLOOR DRAIN (TYPICAL)

PRESSURE REDUCING (VALVE)

UNION (TYPICAL)

NOTICE

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

System flow should always remain higher than the required flow for the boiler(s) when the boiler(s) is in operation to prevent short cycling and high limit issues.

6 Gas connections

Installation & Operation Manual

Connecting gas supply piping

1. Refer to FIG. 6-1 to pipe gas to the boiler. a. Install ground joint union for servicing, when

required.

b. In Canada – When using manual main shutoff

valves, it must be identified by the installer.

2. Install sediment trap / drip leg.

Figure 6-1 Gas Supply Piping

 WARNING

GAS SUPPLY

10 FT

(RECOMMENDED

10 LINEAR FEET

WHERE POSSIBLE)

Ensure that the high gas pressure regulator is at least 10 feet (3 m) upstream of the appliance.

3. Support piping with hangers, not by the boiler or its accessories.

 WARNING

The gas valve and blower will not support the weight of the piping. Do not attempt to support the weight of the piping with the boiler or its accessories. Failure to comply could result in severe personal injury, death, or substantial property damage.

4. Purge all air from the gas supply piping.

5. Before placing the boiler in operation, check the boiler and its gas connection for leaks.

a. The appliance must be disconnected from the gas

supply piping system during any pressure testing of that system at a test pressure in excess of 1/2 PSIG (3.5 kPa).

b. The appliance must be isolated from the gas supply piping system by closing a manual shutoff valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1/2 PSIG (3.5 kPa).

c. The appliance and its gas connection must be leak tested before placing it in operation.

UNION

DRIP LEG

MANUAL SHUTOFF VALVE (FIELD SUPPLIED)

 WARNING

Do not check for gas leaks with an open flame – use the bubble test. Failure to use the bubble test or check for gas leaks can cause severe personal injury, death, or substantial property damage.

6. Use pipe sealing compound compatible with propane gases. Apply sparingly only to male threads of the pipe joints so that pipe dope does not block gas flow.

 WARNING

Failure to apply pipe sealing compound as detailed in this manual can result in severe personal injury, death, or substantial property damage.

6 Gas connections (continued)

Installation & Operation Manual

 WARNING

Figure 6-2 Inlet Pipe with Backup Wrench

Use two wrenches when tightening gas piping at boiler (FIG. 6-2), using one wrench to prevent the boiler gas line connection from turning. Failure to support the boiler gas connection pipe to prevent it from turning could damage gas line components.

Natural gas supply pressure requirements

1. Pressure required at the gas valve inlet pressure port:

• Maximum 14 inches w.c. (3.5 kPa) with no flow (lockup) or with boiler on.

• Minimum 5 inches w.c. (1.25 kPa) for 1.0 models with gas flowing (verify during boiler startup).

• Minimum 4 inches w.c. (.99 kPa) for 1.3 - 1.5 models with gas flowing (verify during boiler startup).

2. Install 100% lockup gas pressure regulator in supply line if inlet pressure can exceed 14 inches w.c. (3.5 kPa) at any time. Adjust lockup regulator for 14 inches w.c. (3.5 kPa) maximum.

Propane Gas:

 WARNING

Pipe sizing for propane gas

1. Contact gas supplier to size pipes, tanks, and 100% lockup gas pressure regulator.

Check boiler rating plate to determine which fuel the boiler is set for. SYNC boilers CAN NOT be field converted. Failure to comply could result in severe personal injury, death, or substantial property damage.

USE BACK UP WRENCH TO

PREVENT PIPE FROM ROTATING

NOTICE

Maximum inlet gas pressure must not exceed the value specified. Minimum value listed is for the purposes of input adjustment.

Natural gas:

 WARNING

Pipe sizing for natural gas

1. Refer to Table 6A for pipe length and diameter. Based on rated boiler input (divide by 1,000 to obtain cubic feet per hour).

a. Table 6A is only for natural gas with specific gravity

0.60 inches, with a pressure drop through the gas piping of 0.5 inches w.c.

b. For additional gas pipe sizing information, refer to

ANSI Z223.1 (or B149.1 for Canadian installations).

Check boiler rating plate to determine which fuel the boiler is set for. SYNC boilers CANNOT be field converted. Failure to comply could result in severe personal injury, death, or substantial property damage.

Propane Supply Pressure Requirements

1. Adjust propane supply regulator provided by the gas supplier for 14 inches w.c. (3.5 kPa) maximum pressure.

2. Pressure required at gas valve inlet pressure port:

• Maximum 14 inches w.c. (3.5 kPa)with no flow (lockup)

or with boiler on.

• Minimum 8 inches w.c. (1.9 kPa) with gas flowing (verify

during boiler startup).

 WARNING

Ensure that the high gas pressure regulator is at least 10 feet (3 m) upstream of the appliance.

6 Gas connections

Table 6A Natural Gas Pipe Size Chart

Installation & Operation Manual

TABLE - 6A

GAS PIPING SIZE CHART

Nominal

Iron Pipe

Size

Inches

1½ 2,150 1,500 1,210 1,020 923 830 769 707 666 636 564 513 472 441

2 4,100 2,820 2,260 1,950 1,720 1,560 1,440 1,330 1,250 1,180 1,100 974 871 820

2½ 6,460 4,460 3,610 3,100 2,720 2,460 2,310 2,100 2,000 1,900 1,700 1,540 1,400 1,300

3 11,200 7,900 6,400 5,400 4,870 4,410 4,000 3,800 3,540 3,300 3,000 2,720 2,500 2,340

4 23,500 16,100 13,100 11,100 10,000 9,000 8,300 7,690 7,380 6,870 6,150 5,640 5,130 4,720

10 20 30 40 50 60 70 80 90 100 125 150 175 200

Check inlet gas supply

NOTICE

 WARNING

The gas piping must be sized for the proper flow and length of pipe, to avoid excessive pressure drop. Both the gas meter and the gas regulator must be properly sized for the total gas load.

If you experience a pressure drop greater than 1 inch w.c. (249 Pa), the meter, regulator, or gas line is undersized or in need of service. Perform the steps below when checking inlet gas supply:

1. Turn the main power switch to the “OFF” position.

2. Shut off gas supply at the manual gas valve in the gas piping to the appliance.

3. Remove the 1/8" pipe plug on the flange to the field supplied gas shutoff valve and install a suitable 1/8" fitting (field supplied) for the manometer tubing. Place the tubing of the manometer over the tap once the 1/8" fitting is installed as shown in FIG. 6-3.

CSA or UL listed flexible gas connections are acceptable, but you must exercise caution to ensure that the line has adequate capacity to allow your boiler to fire at full rate. Consult with local codes for proper installation or service procedures.

DO NOT adjust or attempt to measure gas valve outlet pressure. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

Length of Pipe in Straight Feet

4. Slowly turn on the gas supply at the field installed manual gas valve.

5. Turn the power switch to the “ON” position.

6. Adjust the temperature set point on the control panel of the SMART TOUCH control module to call for heat.

7. Observe the gas supply pressure as the burner fires at 100% of rated input. Percent of burner input will be displayed on the Burner Screen.

8. Ensure inlet pressure is within specified range. Minimum and maximum gas supply pressures are specified in this section of the manual.

9. If gas supply pressure is within normal range and no adjustments are needed, proceed on to Step 11.

10. If the gas pressure is out of range, contact the gas utility, gas supplier, qualified installer or service agency to determine the necessary steps to provide proper gas pressure to the control.

11. Turn the power switch to the “OFF” position.

12. Shut off the gas supply at the manual gas valve in the gas piping to the appliance.

13. Remove the manometer from the pressure tap on top of the gas valve. Remove the 1/8" (3 mm) field supplied fitting and reinstall the pipe plug removed in Step 3.

Maximum

Capacity of Pipe

in Thousands

of Btu/hr for

gas pressures of

14 Inches Water

Column (0.5

PSIG) or less and

a pressure drop

of 0.5 Inch Water

Column (Based

on NAT GAS,

1025 Btu/hr per

Cubic Foot of

Gas and 0.60

Specific Gravity)

6 Gas connections (continued)

Installation & Operation Manual

 WARNING

14. Turn on the gas supply at the manual gas valve.

15. Turn the power switch to the “ON” position.

16. Adjust the temperature set point on the control panel of the SMART TOUCH control module to the desired water temperature so the appliance will call for heat.

17. Check burner performance by cycling the system while you observe burner response. The burner should ignite promptly. Flame pattern should be stable. Turn system off and allow burner to cool, then cycle burner again to ensure proper ignition and flame characteristics.

Figure 6-3 Inlet Gas Supply Check

Do not check for gas leaks with an open flame -- use the bubble test. Failure to use the bubble test or check for gas leaks can cause severe personal injury, death, or substantial property damage.

Gas Pressure

The gas pressure must remain between 4 inches w.c. (.99 kPa) minimum (5 inches w.c. for 1.0 models) and 14 inches w.c. (3.5 kPa) maximum for Natural gas and between 8 inches w.c. (1.9 kPa) minimum and 14 inches w.c. (3.5 kPa) maximum for LP gas during standby (static) mode and while in operating (dynamic) mode. If an in-line regulator is used, it must be a minimum of 10 feet (3 m) from the SYNC boiler. It is very important that the gas line is properly purged by the gas supplier or utility company. Failure to properly purge the lines or improper line sizing, will result in ignition failure.

The problem is especially noticeable in NEW LP installations and also in empty tank situations. This can also occur when a utility company shuts off service to an area to provide maintenance to their lines.

Gas valve replacement

The gas valve MUST NOT be replaced with a conventional gas valve under any circumstances. As an additional safety feature, this gas valve has a flanged connection to the venturi and blower.

 WARNING

Failure to follow all precautions could result in fire, explosion, or death!

7 Field wiring

Installation & Operation Manual

 WARNING

NOTICE

 CAUTION

ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only type 105°C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/NFPA 70 – latest edition.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

Installation must comply with:

1. National Electrical Code and any other national, state, provincial, or local codes, or regulations.

2. In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local codes.

Line voltage connections

1. Connect 120 VAC power wiring to the line voltage terminal strip in the junction box, as shown in FIG. 7-1.

2. Provide and install a fused disconnect or service switch (15 amp recommended) as required by the code (see FIG. 7-1).

3. When connecting hot water generator pumps connect the wiring to the line voltage terminal strip as shown in FIG. 7-1. Maximum current is 1.8 amps, install a field supplied contactor.

4. To activate a system pump, wire as shown in FIG. 7-1. Dry contacts are sized for 1.5 hp/120V, 3 hp/240V or 18 amps.

5. To activate a louver, connect to the dry contacts provided. Contacts are rated for 5 amps, 120V.

Figure 7-1 Line Voltage Field Wiring Connections

120V SUPPLY

NEUTRAL W

GROUND G

LINE

MODULE I

HOT WATER

GENERATOR

MODULE 2

HOT WATER

GENERATOR

SYSTEM PUMP

1.5HP/120V, 3HP/240V

MODULE I

BOILER PUMP

1.5HP/120V, 3HP/240V

MODULE 2

BOILER PUMP

1.5HP/120V, 3HP/240V

SERVICE SWITCH

PUMP CONTROL

L2/W

7 Field wiring (continued)

Installation & Operation Manual

Low voltage connections

1. Route all low voltage wires through the knockouts in the rear of the boiler, as shown in FIG. 7-2.

2. Connect low voltage wiring to low voltage connection board as shown in FIG. 7-3 on page 41 of this manual and the boiler wiring diagram.

Figure 7-2 Routing Field Wiring

LOW VOLTAGE

WIRING KNOCKOUTS

LINE VOLTAGE

WIRING KNOCKOUTS

LOW VOLTAGE

CONNECTION BOARD

Enable

1. Connect the room thermostat or boiler enable contacts (isolated contact only) to terminals R and W, as shown in FIG. 7-3.

2. If a thermostat is used, install the thermostat on the inside wall away from influences of drafts, hot or cold water pipes, lighting fixtures, television, sunlight, or fireplaces.

3. Thermostat anticipator (if applicable):

a. If connected directly to boiler, set for 0.1 amps. b. If connected to relays or other devices, set to match

total electrical power requirements of connected devices. See device manufacturers’ specifications and thermostat instructions for details.

Hot Water Generator (HW) thermostat

1. Connect the HW tank thermostat to the Tank Thermostat terminals on the connection board (FIG. 7-3).

Hot Water Generator (HW) tank sensor

1. By installing a HW tank sensor, the SMART TOUCH control can perform the tank thermostat function. The SMART TOUCH control automatically detects the presence of this sensor, and generates a HW call for heat when the tank temperature drops 6°F (3°C) below the tank set point, and finishes the call for heat when the tank temperature reaches the tank set point.

2. A TST2032 sensor MUST be used with any indirect tank. Failure to use the correct sensor will result in the tank temperature being either above or below the set point. Connect the correct sensor to the Tank Sensor terminals (see FIG. 7-3).

Louver proving switch

1. Louvers are used to provide combustion air for the room air option. A louver proving switch should be installed on the appropriate terminals and verified prior to operation (see FIG. 7-3).

Flow switch (field supplied)

1. Flow switches are designed to prevent a no flow situation.

2. A flow switch may be used to guarantee flow through the boiler before allowing it to fire. When used, the SYNC boiler requires a flow switch to be installed on each inlet.

3. Remove the jumper wires from the terminals on the connection board and connect these terminals to the normally open contacts on the flow switches (FIG. 7-3).

Outdoor temperature sensor

1. Connect the outdoor temperature sensor (FIG. 7-3) to the Outdoor Sensor terminals on the connection board to enable outdoor reset operation of the SYNC.

2. Mount the sensor on an exterior wall, shielded from direct sunlight or flow of heat or cooling from other sources.

3. Route sensor wires through a knockout at the rear of the boiler (see FIG. 7-2).

7 Field wiring

Installation & Operation Manual

System supply sensor

1. By installing the system supply sensor into the supply of the primary loop, the temperature of the system supply can be controlled. The SMART TOUCH control automatically detects the presence of this sensor, and controls the boiler firing rate to maintain the system supply temperature to the set point.

NOTICE

2. Connect these terminals to the system supply sensor (FIG. 7-3).

NOTICE

DO NOT INSTALL THE SYSTEM SUPPLY SENSOR INTO THE SYSTEM RETURN.

A system supply sensor (factory supplied) MUST BE installed for proper boiler operation.

Boiler management system

1. An external control may be connected to control either the firing rate or the set point of the boiler. Connect the 0 - 10 VDC terminals to the 0 - 10 VDC output of the external control. The SMART TOUCH control can be enabled using the Enable output (see page 39) or using the voltage applied to the 0 - 10 VDC input. Reference the SYNC Service Manual for more details.

2. Make sure the ground terminal is connected to the ground output terminal of the external control, and the 0 - 10 VDC terminal is connected to the 0 - 10 VDC terminal of the external control.

Runtime contacts

The SMART TOUCH control closes a set of dry contacts whenever the burner is running. This is typically used by Building Management Systems to verify that the boiler is responding to a call for heat.

Wiring of the cascade

When wiring the boilers for Cascade operation, select one boiler as the Leader boiler. The remaining boilers will be designated as Members. See page 48 “Configuration of the Cascade” for a detailed explanation of this procedure.

Connect the system supply sensor and outdoor air sensor (if used) to the Leader boiler. For the Cascade system to work properly the system supply sensor must be installed.

NOTICE

The location of the system supply sensor should be downstream of the boiler connections in the main system loop (FIG.’s 5-5 and 5-6). The system supply sensor should be wired to the Low Voltage Connection Board at the terminals marked for the system supply sensor (see FIG. 7-3). The Leader control will use the water temperature at the system supply sensor to control the operation of the Cascade.

If outdoor air reset is desired, the outdoor air sensor should be wired to the Low Voltage Connection Board at the terminals marked for the outdoor air sensor on the Leader boiler (FIG. 7-3). If the outdoor air sensor is connected, the Leader control will calculate the water temperature set point based on the programmed reset curve parameters. If the outdoor air sensor is not connected, the Leader control will maintain the fixed water temperature set point that is programmed into the control.

If a Thermostat or Zone Control enable output is available, it should be wired to the Low Voltage Connection Board on the Leader boiler at the terminals marked Enable (FIG. 7-3). If the boilers are to run continuously, connect a jumper wire between the R and W terminals at the Enable input. This will initiate a call for heat on the Cascade. If the SMART TOUCH control is being controlled by a Boiler Management System (BMS), a call for heat may be initiated by the voltage applied to the 0 - 10 VDC input.

A system supply sensor (factory supplied) MUST BE installed for proper boiler operation.

Alarm contacts

The SMART TOUCH control closes another set of contacts whenever the boiler is locked out or the power is turned off. This can be used to turn on an alarm, or signal a Building Management System that the boiler is down. Note that these contacts will close momentarily at the end of each call for heat or at least every 24 hours.

Communication between the Leader boiler and the Member boilers is accomplished by using shielded, 2-wire twisted pair communication cable. Connect one of the twisted pair wires to terminal A on each of the Low Voltage Connection boards, and the other wire of the twisted pair to terminal B on each of the Low Voltage Connection Boards. Connect the shield wires to one of the shield ground terminals on the Low Voltage Connection Boards (FIG. 7-3). If more than two boilers are on the Cascade, daisy chain the wiring from the Sequencing terminals on the second boiler to the Sequencing terminals on the third boiler, then from the third to the forth, and so on. The connections between boilers can be made in any order, regardless of the addresses of the boilers. Try to keep each cable as short as possible.

7 Field wiring (continued)

Figure 7-3 Low Voltage Field Wiring Connections

Installation & Operation Manual

MOD BUS

LBL20052 REV B

ENABLE

1 ALARM

2 CONTACTS

3 RUN TIME

SHIELD

7 HEX 2

5 LOUVER

6 PROVING

8 FLOW SWITCH

9 HEX 1

10 FLOW SWITCH

11 TANK

12 THERMOSTAT

13 R

14 W

15 SHIELD GND

4 CONTACTS

16 A

17 B

0 - 10V INPUT

21 SYSTEM

20 (-)

18 SHIELD GND

19 (+)

22 SENSOR

23 OUT DOOR

24 SENSOR

25 TANK

CASCADE

26 SENSOR

27 SHIELD GND

30 SHIELD GND

29 A

28 B

SHIELD

MODBUS COMMUNICATION BUS

TO NEXT BOILER

SHIELD

TO NEXT BOILER

BUILDING

MANAGEMENT

SYSTEM

LOUVER

PROVING

SWITCH

HEAT

EXCHANGER 2

FLOW SWITCH

HEAT

EXCHANGER 1

FLOW SWITCH

TANK

SHIELD

FROM PREVIOUS BOILER

THERMOSTAT

SYSTEM SENSOR

OUTDOOR SENSOR

TANK SENSOR

ENABLING DEVICE

8 Condensate disposal

Installation & Operation Manual

Condensate drain

1. This boiler is a high efficiency appliance that produces condensate.

2. The rear of the boiler has a 1/2 inch (12.7 mm) PVC union for connection of a 1/2 inch (12.7 mm) PVC pipe (FIG. 8-1).

3. Slope condensate tubing down and away from the boiler into a drain or condensate neutralizing filter. Condensate from the SYNC will be slightly acidic (typically with a pH from 3 to 5). Install a neutralizing filter if required by local codes.

A Neutralizer Kit (FIG. 8-1) is available from the factory

(KIT3046).

4. Install the 1/2 inch (12.7 mm) PVC tee assembly (shipped with the unit) as shown in FIG. 8-1.

5. Leave the top of the 1/2 inch (12.7 mm) tee OPEN. This is needed as a vacuum break.

6. Do not expose condensate line to freezing temperatures.

NOTICE

7. A condensate removal pump is required if boiler is below drain. When installing a condensate pump, select one approved for use with condensing boilers and furnaces. The pump should have an overflow switch to prevent property damage from condensate spillage. The switch should be wired to the auxiliary device proving switch terminals on the low voltage connection board.

Use materials approved by the authority having jurisdiction. In the absence of other authority, PVC and CPVC pipe must comply with ASTM D1785 or D2845. Cement and primer must comply with ASME D2564 or F493. For Canada use CSA or ULC certified PVC or CPVC pipe, fittings, and cement.

To allow for proper drainage on large horizontal runs, a second line vent may be required and tubing size may need to increase to 1 inch (25 mm).

The condensate line must remain unobstructed, allowing free flow of condensate. If condensate is allowed to freeze in the line or if the line is obstructed in any other manner, condensate can exit from the boiler tee, resulting in potential water damage to property.

Figure 8-1 Condensate Disposal

1/2" (12.7 mm) PVC TEE ASSEMBLY

(FACTORY SUPPLIED)

1/2" (12.7 mm) PVC UNION

(FACTORY SUPPLIED)

FLOOR DRAIN

OR DRAIN PAN

NEUTRALIZER KIT

9 Start-up

Installation & Operation Manual

Check/control water chemistry

 CAUTION

Hardness less than 7 grains

1. Consult local water treatment companies for hard water areas (above 7 grains hardness).

Chlorine concentration less than 200 ppm

1. Do not fill boiler or operate with water containing chlorine in excess of 200 ppm.

2. Filling with chlorinated fresh water should be acceptable since drinking water chlorine levels are much lower.

3. Do not use the boiler to directly heat swimming pool or spa water.

Test/replace freeze protection fluid

1. For systems using freeze protection fluids, follow fluid manufacturer’s instructions.

Do not use petroleum-based cleaning or sealing compounds in the boiler system. Damage to elastomer seals and gaskets in the system could occur, resulting in substantial property damage.

4. At initial fill and during boiler startup and testing, check system thoroughly for any leaks. Repair all leaks before proceeding further.

 WARNING

Eliminate all system leaks. Continual fresh makeup water will reduce boiler life. Minerals can build up in the heat exchanger, reducing heat transfer, overheating the heat exchanger, and causing heat exchanger failure.

Purge air from water system

1. Purge air from system:

2. Open automatic air vent (diaphragm-type or bladdertype expansion tank systems only) one turn.

3. Open other vents:

a. Starting on the lowest floor, open air vents one at a

time until water squirts out.

b. Repeat with remaining vents.

4. Refill to correct pressure.

2. Freeze protection fluid must be replaced periodically due to degradation of inhibitors over time. Follow all fluid manufacturer’s instructions.

Freeze protection (when used)

1. Determine freeze protection fluid quantity using

system water content, following fluid manufacturer’s instructions. Boiler water content is listed on page 6. Remember to include expansion tank water content.

2. Local codes may require a backflow preventer or actual

disconnect from city water supply.

3. When using freeze protection fluid with automatic fill,

install a water meter to monitor water makeup. Freeze protection fluid may leak before the water begins to leak, causing concentration to drop, reducing the freeze protection level.

Fill and test water system

1. Fill system only after ensuring the water meets the requirements of this manual.

2. Close manual and automatic air vents and boiler drain valve.

3. Fill to correct system pressure. Correct pressure will vary with each application.

a. The minimum cold water fill pressure for a commercial system is 12 psi (82.7 kPa).

b. Pressure will rise when boiler is turned on and

system water temperature increases.

9 Start-up

Check for gas leaks

Installation & Operation Manual

 WARNING

Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove the top access panel and smell the interior of the boiler enclosure. Do not proceed with startup if there is any indication of a gas leak. Use an approved leak detection solution. Repair any leaks at once.

 WARNING

DO NOT adjust or attempt to measure gas valve outlet pressure. The gas valve is factory set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

Figure 9-1 Condensate Trap

PVC TEE ASSEMBLY (FACTORY SUPPLIED)

2" PVC CAP WITH BLOCKED DRAIN SWITCH

RETAINING SCREW

CONDENSATE FROM HEAT EXCHANGER

 WARNING

Propane boilers only – Your propane supplier mixes an odorant with the propane to make its presence detectable. In some instances, the odorant can fade, and the gas may no longer have an odor. Before startup (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas.

Check thermostat circuit(s)

1. Disconnect the two external wires connected to the enable terminals on the connection board.

2. Connect a voltmeter across these two incoming wires. Close each thermostat, zone valve, and relay in the external circuit one at a time and check the voltmeter reading across the incoming wires.

3. There should NEVER be a voltage reading.

4. If a voltage does occur under any condition, check and correct the external wiring. (This is a common problem when using 3-wire zone valves.)

5. Once the external boiler enable wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the connection board. Allow the boiler to cycle.

TO FLOOR DRAIN

Inspect/fill condensate system

Inspect/check condensate lines and fittings

1. Inspect the condensate drain line, condensate PVC fittings and condensate trap.

Fill condensate trap with water

1. Remove the PVC cap retaining screw from the PVC cap (FIG. 9-1).

2. Remove the 2 inch PVC cap with the switch located at the top of the trap (FIG. 9-1).

3. Fill with fresh water until the water begins to pour out of the drain.

4. Replace the cap. Press the cap onto the trap until the cap makes contact with the drain.

5. Replace the retaining screw.

 WARNING

The condensate trap (FIG. 9-1) must be filled with water during all times of boiler operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.

9 Start-up (continued)

Installation & Operation Manual

Final checks before starting the boiler

 Read the SYNC Service Manual to familiarize yourself

with SMART TOUCH control module operation. Read this manual, page 46 for proper steps to start boiler.

 Verify the boiler and system are full of water and all

system components are correctly set for operation.

 Verify the preparation procedures of Section 9, pages 43

and 44 have been completed.

 Fill the vent condensate trap with water (removing the

retaining screw in order to remove the 2 inch (50.8 mm) PVC cap with the switch located at the top of the trap). Replace the cap. Press the cap onto the trap until the cap makes contact with the drain. Replace the retaining screw.

 Verify electrical connections are correct and securely

attached.

 Inspect vent piping and air piping for signs of deterioration

from corrosion, physical damage or sagging. Verify air piping and vent piping are intact and correctly installed per this manual.

Start the boiler

1. Read and follow the Operating instructions in FIG. 9-2, page 46.

 Check vent piping and air piping

1. Check for gastight seal at every connection, seam of air piping, and vent piping.

 WARNING

 Check gas piping

1. Check around the boiler for gas odor following the procedure on page 34 of this manual (connecting gas supply piping).

 WARNING

Venting system must be sealed gastight to prevent flue gas spillage and carbon monoxide emissions, which will result in severe personal injury or death.

If you discover evidence of any gas leak, shut down the boiler at once. Find the leak source with a bubble test and repair immediately. Do not start the boiler again until corrected. Failure to comply could result in severe personal injury, death, or substantial property damage.

Check flame and combustion

1. Turn the main power off to the boiler by placing the “On/Off” switch in the OFF position.

2. Remove the flue temperature sensors from the flue pipe connections. Note: Combustion measurements will be made at this point.

If boiler does not start correctly

1. Check for loose connections, blown fuse or service switch off?

2. Is external limit control (if used) open? Is boiler water temperature above 200°F (93°C)?

3. Is thermostat set below room temperature?

4. Is gas turned on at meter or boiler?

5. Is incoming gas pressure less than 4 inches w.c. (.99 kPa)?

If none of the above corrects the problem, refer to the Troubleshooting Section of the SYNC Service Manual.

Check system and boiler

 Check water piping

1. Check system piping for leaks. If found, shut down the boiler and repair immediately. (See WARNINGS on pages 43 and 44 (startup) regarding failure to repair leaks.)

2. Vent any remaining air from the system using manual vents. Air in the system will interfere with circulation and cause heat distribution problems and noise.

3. Turn the main power on to the boiler by placing the “On/Off” switch in the ON position.

9 Start-up

Figure 9-2 Operating Instructions

FOR YOUR SAFETY READ BEFORE OPERATING

WARNING: If you do not follow these instructions exactly, a fire or explosion

may result causing property damage, personal injury, or loss of life.

Installation & Operation Manual

A. This appliance does not have a pilot. It is

equipped with an ignition device which automatically lights the burner. Do not to light the burner by hand.

B. BEFORE OPERATING smell all around

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

WH AT TO D O I F YO U SM ELL G AS

• Do not try to light any appliance.

• Do not touch any electric switch; do

not use any phone in your building.

try

OPERATING INSTRUCTIONS

1. STOP! Read the safety information

above on this label.

2. Set the thermos tat to lowest setting.

3. Turn off all electric power to the appliance.

4. This appliance is equipped with an ignition device which automatically lights the burner. Do not tr y to light t he burner by hand.

5. Remove front door.

6. Turn gas shutoff valves counterclockwise to “OFF”. Handle will be perpendicular to pipe. Do not force.

7. Wait five (5) minutes to clear out any gas. If you then smell gas, in the safety information above this label. If you don’t smell gas, go to next step.

STOP! Follow “B”

• 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.

C. Use only your hand to turn the gas control knob.

Never use tools. If the handle will not turn by hand, don ’t try to repair it, c all a qualified service technician. Force or attempted repair may result in a fire or explosion.

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

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

8. Turn gas shutoff valve clockwise to “ON”. Handle will be p arallel to pipe.

9. Install top cover.

10. Turn on all electric power to appliance.

11. Set thermostat to desired setting .

12. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance” and call your service technician or gas supplier.

TO TURN OFF GAS TO APPLIANCE

1. Set the thermos tat to lowest setting.

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

3. Remove front door.

4. Turn gas shut off valves counterclockwise to “OFF”. Handle will be perpe ndicular to pipe. Do not force.

5. Install front door.

LBL20053 REV A

9 Start-up (continued)

Installation & Operation Manual

Check flame and combustion (continued)

4. Navigate to the Service Mode Screen from the Status Screen by pressing the MAIN button and then the SERVICE MODE button.

5. On the Service Screen place Heat Exchanger 1 into operation by selecting Heat Exchanger 1 with the SELECT button and turning the heat exchanger on by pressing the ON/OFF button (OFF indicates that the heat exchanger is off and ON indicates that the heat exchanger should be firing).

6. Insert the probe from a combustion analyzer into the hole left by the removal of the flue temperature sensor.

Note: Heat Exchanger 1 is the top heat exchanger; please

ensure the probe is in the top flue sensor location.

7. Once the heat exchanger has modulated up to full fire measure the combustion. The values should be in the range listed in Table 9A below. CO levels should be less than 200 ppm for a properly installed unit. If the combustion is not within range reference the Troubleshooting Section in the SYNC Service Manual for possible causes and corrective actions.

Set space heating operation

Verify space heat circulator mode

The Space Heating Mode controls the system pump (if connected), and both boiler pumps. When the SMART TOUCH control receives a space heating call for heat, it turns on the system pump. If the boiler is not heating an indirect HW (Hot Water) tank, it also turns on the boiler pump. After the space heating call for heat ends, the system pump continues to run for a short period of time. If the boiler pump was running, it continues to run for a short period of time as well. These pump delays are factory set to 30 seconds. If different delays are desired, the appropriate parameters in the control must be changed. See the SYNC Service Manual for a detailed explanation of this procedure.

Set space heating set point temperature

During normal operation, space heating set point temperatures can be adjusted from the Set Points Menu. Press the following buttons to navigate to the Set Points Menu from the Status Screen:

>> >>

Table 9A Flue Products Chart

Natural Gas Propane

8.0% - 10% 3.0% - 6.5% 9.0% - 11% 4.1% - 6.9%

8. Once the Heat Exchanger 1 analysis is complete, test the safety shutoff device by turning the manual shutoff valve to the OFF position and ensuring that Heat Exchanger 1 shuts down and registers an alarm. Open the manual shutoff valve, reset the control, and return to Service Mode.

9. Repeat the same procedure for Heat Exchanger 2 by selecting Heat Exchanger 2 while on the Service Mode Screen. Be certain to insert the probe from the combustion analyzer into the Heat Exchanger 2 flue temperature sensor location.

10. Turn the main power off to the boiler and replace the flue temperature sensor into the flue pipe connection.

11. Place the boiler back into normal operation.

1. To change a set point, press the SELECT button next to the user set point parameter.

2. The first time the user set point parameter is accessed, you will be required to enter the user password. The user password is 0704.

3. Using the keypad, enter the password and then press the OK button. If the password is not entered correctly, the screen will revert to the Parameter List Screen and you will not be able to adjust the set point. If a digit has been entered incorrectly, press the left arrow key on the keypad to back the digit up. If the password has been entered correctly, the Parameter Change Screen will appear. The Parameter Change Screen will display the set point being changed, the previous setting of the set point, and adjustment buttons.

4. To adjust the set point, press the + or - buttons to change the value being displayed.

5. Once the set point has been adjusted to the desired setting press the APPLY button to change the set point and return to the Parameter List Screen.

 WARNING

You must replace the flue gas temperature sensor to prevent flue gas spillage into the room. Failure to comply could result in severe personal injury, death, or substantial property damage.

9 Start-up

Installation & Operation Manual

6. If no other changes are necessary, press the BACK button to return to the Parameter List Screen.

7. Once all the necessary adjustments have been made, press the BACK button to return to the Setup Screen.

8. Press the SAVE button to program all changes made to the set points and return to the Status Screen. Leaving the Setup Screen without pressing the SAVE button will erase the changes made to the set points and change them back to their previous settings.

Note: The SAVE button must be pressed to ensure proper

programming of the controls. Failure to press the SAVE button will require all changes to be reprogrammed.

Set Hot Water Generator (HW) operation

Verify HW circulator mode

The HW Mode is programmed to heat an indirect hot water tank. When a tank thermostat or a tank sensor initiates a call for heat, the SMART TOUCH control will turn on the HW pumps and turn off the boiler pumps (if running). If the system pump is running, it will remain on. When the HW call for heat ends, and there is no space heating call for heat, the HW pumps will continue to run for a period of time. This pump delay is set at the factory to 30 seconds. If a shorter or longer delay is desired, the appropriate parameter in the control must be changed. See the SYNC Service Manual for a detailed explanation of this procedure. If there is an active space heating call for heat, then the boiler pumps will be turned on and the HW pumps will be turned off.

2. Using the keypad, adjust the date and time by working from left to right. If a digit has been entered incorrectly, press the left arrow key on the keypad to back the digit up. If no change is necessary, press the BACK button to return to the Parameter List Screen. Once the correct date and time have been entered press the OK button on the display to program the date and time into memory and return to the Parameter List Screen.

NOTICE

Configuration of the cascade

When installed in a Cascade system, the individual controls must be programmed for cascade operation. To program the cascade parameters, access the Cascade Menu found in the Setup Menu by pressing the following buttons:

Note: The CASCADE button on the Main Menu will only display the current status of the cascade.

1. Once in the Cascade Setup Menu select the appropriate parameter by pressing the SELECT button.

2. The first time the cascade setup parameters are accessed, you will be required to enter the service password. Enter the service password as described in the SYNC Service Manual.

The internal clock does not adjust for Daylight Savings Time and therefore, will require a manual adjustment.

>> >>

Set HW target temperature

When in the HW Mode, the control will modulate to maintain the outlet temperature to a set point. This set point is set at the factory to 180°F. If a different set point is desired, the appropriate parameter in the control must be changed. See the SYNC Service manual for a detailed explanation of this procedure.

Set clock

To program the clock, access the night setback parameter by pressing the following buttons:

>> >>

The SMART TOUCH control has a built-in clock that it uses for its night setback feature and for logging events. This clock must be set when the boiler is installed, and anytime the boiler has been powered off for more than one month. Use the following procedure to set the clock:

1. To set the clock, press the SELECT button in the upper right-hand corner of the display. The date and time are displayed as “Day dd/mm/yy hh:mm”. Day = day of the week (1 = Monday, 2 = Tuesday, etc.), dd = date, mm = month, yy = year, hh = hour, mm = minutes (24 hour time; 2:30PM = 14:30).

3. Once the password has been entered correctly, the

Parameter Change Screen will appear. The Parameter Change Screen will display the parameter being changed, the previous setting of the parameter, and adjustment buttons.

4. To adjust the parameter, press the + or - buttons to change

the value being displayed.

5. Make the correct adjustments and then press the APPLY

button.

6. Once all the parameters have been adjusted press the BACK

button. This will return you to the Setup Menu.

7. Press the SAVE button to program all controls.

Note: The SAVE button must be pressed to ensure proper programming of the controls. Failure to press the SAVE button will require all changes to be reprogrammed.

10 Operating information

Installation & Operation Manual

General

How the boiler operates

The SYNC uses advanced stainless steel heat exchangers and electronic control modules that allow fully condensing operation. The blowers pull in air and push flue products out of the boiler through the heat exchangers and flue piping. The control modules regulate blower speed to control the boiler firing rate. The gas valve senses the amount of air flowing into the boiler and allows only the right amount of gas to flow.

How the control modules operate

The SYNC boiler is equipped with two (2) SMART TOUCH control modules. The control modules work in synchronization to meet the heat demand of the system.

The SMART TOUCH control modules receive input from boiler sensors and external inputs. The control modules activate and control the blowers and gas valves to regulate heat input and switches the boiler, Hot Water Generator (HW), and system pumps on and off as needed. The user programs the control modules to meet system needs by adjusting control parameters. These parameters set operating temperatures and boiler operating modes. Boiler operation is based on system temperature.

Control inputs and outputs

Room thermostat / zone control

This input tells the boiler to provide water for space heating.

Hot Water Generator (HW) tank thermostat

This input tells the boiler to provide water for heating an indirect HW tank.

HW priority

The SMART TOUCH control module allows connection of a HW thermostat to the low voltage connection board. When the HW thermostat calls for heat, the control modules activate the HW pumps, shuts down the boiler pumps, and immediately sets the target outlet water temperature to 180°F (82.2°C). This provides automatic priority heat allocation to the HW Generator for maximum response and recovery. The HW pumps continue for 30 seconds after the heating cycle to deliver the most possible heat.

Controlling sensor

The control module is programmed to use the outlet sensor as the control sensor by default. If a system supply sensor is connected, the control automatically uses it as the control sensor.

Anti-cycling

After a space heating demand has been satisfied, the control will delay the next space heating call for a set time period (time is adjustable by the installer). The time delay will be bypassed if the inlet water temperature drops too far during the delay.

Boiler, system, and HW pump control

When a space heating call for heat starts and no HW call is on, the system and boiler pumps are turned on. As long as the space heating call for heat is on, the system pump will remain on. If a HW call for heat is on, the boiler pumps will wait to turn on until just before the HW pumps turn off. After the space heating call for heat ends, both pumps will run for an additional period of time.

When a HW call for heat starts, the HW pumps are turned on. If a space heating call for heat was on, the boiler pumps will turn off a few seconds after the HW pumps turn on.

0 - 10V input (set point or power)

The SYNC can be controlled by a Building Management System (BMS) using a 0 - 10 VDC signal. The control can be configured by the installer to use this signal to either control set point or firing rate.

Louver

A dry contact is provided to open and close louvers whenever the SYNC boiler requires combustion air from inside the room. Connect the Louver End Switch to the Louver Proving Switch

input on the Low Voltage Connection Board.

Temperature control

Modulation

The SYNC is capable of modulating its firing rate from a minimum of 10% to a maximum of 100%. The firing rate is dictated by the call for heat (i.e., space heating or hot water generation), the heating load, and various other temperature limitations.

10 Operating information

Installation & Operation Manual

Gradient limiting

If during operation of the boiler the outlet water temperature is rising too quickly, the control will reduce the firing rate to its lowest setting.

Outdoor air reset

If an outdoor air sensor is connected, the control module will calculate the set point based on the programmed reset curve. The installer can change the slope of the reset curve by several adjustable parameters. The user can limit the maximum set point for the system using the space heating set point.

Boost function

If outdoor air reset is active, and a space heating demand has been active continuously for a set period of time (time adjustable by installer) and there has been no HW demands, the control will increase the set point by a fixed number of degrees (adjustable by installer). This process will continue until the space heating demand ends, the set point reaches the programmed set point or a maximum of 20 increases has occurred. Once the system heat demand is satisfied, the set point will revert to the value determined by the reset curve.

Night setback

The controller may be programmed to reduce the space heating set point during a certain time each day. A start and stop time can be programmed for each day of the week.

Flame current support

To prevent nuisance shutdowns when the boiler is firing at minimum rates, the control will increase the firing rate when the flame signal drops too low.

Protection features

Outlet temperature, flue temperature, and temperature rise limiting

The outlet temperature is monitored by the boiler outlet temperature sensor. When the outlet temperature exceeds 185°F, the unit will reduce the fan speed. If the outlet water temperature exceeds 195°F (90°C) the control will shut the unit down until it cools off.

The control module monitors the flue temperature by a sensor located in the flue exhaust. If the flue temperature exceeds 215°F (102°C) the control will reduce the maximum fan speed. If the flue temperature exceeds 240°F (115°C) the control will shut the unit down. The unit will restart automatically once the flue temperature drops 25°F (14°C) and the minimum off time has expired.

The control monitors the temperature difference between the inlet and the outlet sensor. If this difference exceeds 55°F (13°C) the control will reduce the fan speed. If the temperature difference exceeds 60°F (15°C) the control will shut the unit down. The unit will restart automatically once the temperature difference has dropped below 55°F (31°C) and the minimum off time has expired.

Freeze protection

DO NOT install the boiler in a room likely to freeze.

The following integral feature of the SMART TOUCH control module provides some protection for the boiler only -- not for the system.

• The SMART TOUCH control module provides freeze-up protection as follows when the boiler water temperature drops below 45°F (7°C):

• Below 45°F (7°C), the boiler and system pumps operate constantly.

• Below 37°F (3°C), the boiler turns on.

• Boiler and pumps turn off if boiler water temperature rises above 45°F (7°C).

 CAUTION

This feature of the SMART TOUCH control module does not eliminate the possibility of freezing. The installation must still use recognized design, installation and maintenance practice to prevent freeze potential for the boiler and system.

Installation & Operation Manual

10 Operating information (continued)

Monitor external limits

Connections are provided on the connection board for external limits such as flow switch and a louver proving switch. The SMART TOUCH control will shut off the burner and inhibit relighting whenever any of these external limits open.

Run-time and alarm outputs

The boiler provides dry contacts for indicating when the boiler is running, and when it is unable to operate.

Run-time and cycle counting

The control uses two timers to monitor the total hours of burner operation. One timer monitors the time the boiler is firing under 50% of rate. The other timer monitors the time the boiler is firing over 50% rate.

The control uses four (4) ignition counters to monitor the amount of boiler cycles. The first counter counts all ignitions of the control. The second counter counts only ignition attempts that have failed. The third and fourth counters are the same as the first and second respectively, but can be reset by the installer.

Service reminder

The control can be programmed for service reminder notification. This notification will become active when either a set time frame has expired, or a set amount of running hours or cycles has expired (all adjustable by the installer). The display will alternate the standard text on the display screen with Service Due every 5 seconds. The service reminder notification can be reset by the installer.

High limit operations

When outlet temperature exceeds 200°F (93.3°C), high limit action occurs. The boiler shuts down until the outlet water cools down.

Low water cutoff protection

1. A low water cutoff device with test and reset functionality is provided in the boiler as standard equipment.

Flow sensing device

1. The SMART TOUCH control module uses temperature sensing of both supply and return temperatures of the heat exchanger. If the flow rate is too low or the outlet temperatures too high, the control module modulates down and will shut the boiler off. This ensures boiler shutdown in the event of low flow conditions.

NOTICE

If a mechanical flow switch is required to meet local code requirements the SYNC boiler can be equipped with field supplied switches on each inlet. Please reference page 39 of this manual for more information.

Outdoor reset operation, if used

Target temperature with outdoor reset

This feature improves the system’s efficiency as the outdoor temperature warms up.

See the SYNC Service Manual to change the settings.

Reset curve

Error logging

The control will hold in memory the last 10 error codes as well as the last 10 turn-off functions. The date and time of the occurrence will be recorded as well. Only the 10 most current occurrences will be held in memory.

Boiler temperature regulation

Operating temperature (target)

The SMART TOUCH control module senses water temperature and regulates boiler firing and firing rate to achieve a target temperature. The target temperature can be set between 70°F (21°C) and 190°F (88°C).

• Target temperature is fixed when the outdoor sensor is not installed.

• Target temperature is calculated as described below under “Outdoor Reset Operation” and “Target Temperature Boost” when the outdoor sensor is connected.

The reset curve looks at outdoor air temperature and adjusts the set point.

Cascade

When multiple boilers are installed, they can be wired together in a cascade sequence. A maximum of eight boilers can be controlled from a single control. In this application one boiler would be designated as the Leader control and all others would be designated as Member controls.

Once the Leader boiler receives a call for heat from the Enable input or 0 - 10 VDC input, the control will determine what the set point will be. If outdoor air reset is desired, connect the outdoor air sensor to the terminals on the Low Voltage Connection Board on the Leader boiler. The set point will be calculated based on the programmed reset curve parameters. See the SYNC Service Manual to program the reset curve. If outdoor air reset is not desired, do not connect the outdoor air sensor. A fixed temperature set point can be programmed into the control.

10 Operating information

Installation & Operation Manual

If the water temperature at the system supply sensor is less than the set point + the turn-off offset - the off-on differential, then the control will initiate a call for heat on the Cascade (see the SYNC Service Manual for an explanation of the offset and differential). The Leader will energize the lead boiler on the Cascade. For a new startup this will be the Leader boiler.

The boiler will fire at its ignition speed and will then modulate its firing rate to maintain the set point. If the first boiler reaches 100% of its firing rate, the Leader will calculate at what point the second boiler could fire at 10% of its firing rate. At this point, the Leader will fire the second boiler on the Cascade. For a new startup, this would be the first Member boiler. The boiler will fire at its ignition speed and will then modulate its firing rate to maintain the set point.

If the set point still cannot be met, the Leader will continue firing more Members until either the heat demand is met or all boilers on the Cascade are firing. As the heat demand decreases, the last boiler on will modulate down to 10% of its firing rate. Once the demand for that boiler is zero, it will shut down. As the heat demand decreases further, the second to last boiler will modulate down and shut off. This will continue until the demand is satisfied and all boilers are shut off.

HW operation with cascade

For HW operation any boiler(s) in the Cascade can be selected to provide heat for a HW call. Select a boiler to be designated as the HW boiler. Connect the HW thermostat or sensor to the terminals on the Low Voltage Connection Board marked for the HW Thermostat or sensor. When the boiler receives a HW call, the Leader control will take that boiler out of the Cascade sequence. If another boiler is available, the Leader will start it up to take its place.

The HW boiler will adjust its set point to the programmed HW set point and will adjust its firing rate to maintain this. Once the HW call has been satisfied, the Leader control will place that boiler back into the Cascade sequence.

Night Setback operation with cascade

Night Setback operation of the boilers within the Cascade is available. Programming of the Night Setback will be done through the Leader boiler. Refer to the SYNC Service Manual for information regarding Night Setback.

Sequence of the cascade

To equalize the run time of all boilers on the Cascade, the firing sequence will automatically be changed at set intervals.

For the first 24 hours after initializing the Cascade, the sequence will be changed every hour. After that the sequence will be changed once every 24 hours. The switching on/off sequence will be as follows:

DAY SWITCHING ON SEQUENCE

Day 1 L-M1-M2-M3-M4-M5-M6-M7

Day 1 + 1 hour M2-M3-M4-M5-M6-M7-L-M1

Day 1 + 2 hours M4-M5-M6-M7-L-M1-M2-M3

Installation & Operation Manual

10 Operating information (continued)

Sequence of operation

Note: This unit is equipped with two (2) independent, but synchronized combustion systems. The Heat Exchanger 1 combustion system will fire first. If the demand cannot be met by one (1) combustion system the same sequence of operation will be followed to bring the Heat Exchanger 2 combustion system online.

Upon a call for heat, the control turns on the appropriate pumps (system and boiler pumps for a space heating call,

HW pump relay output for a HW call).

The control confirms that the low water cutoff and flow switch (optional) contacts are closed.

The control starts the blower and closes the louver contacts to begin the Pre-Purge cycle.

The control confirms that the blower comes up to the desired speed, the flap valve opens, and the air pressure switch,

gas pressure switch (optional), louver proving switch (optional), and blocked drain switch contacts close.

Once the Pre-Purge cycle is complete, the control lowers the blower speed, initiates sparking of the ignition electrode,

and opens the gas valve.

10.

11.

12.

After a short wait, the control stops sparking and checks for the presence of flame current through the spark and flame sense electrodes.

If the control does not detect flame current, the control will lockout indefinitely, until the RESET button on the touch screen LCD is pressed.

If the control detects flame current, the control will hold the blower speed constant for a few seconds to allow the flame to stabilize, then begin modulating the firing rate in order to maintain the controlling sensor to the desired set point temperature.

If the current call for heat is for space heating and a HW call for heat becomes active, the control will turn on the HW pump relay output, then turn off the boiler pumps. It will then modulate the blower speed in order to maintain the outlet temperature to the desired HW outlet set point temperature.

If the first heat exchanger in the boiler is unable to maintain the desired set point temperature, the second heat exchanger in the boiler will be started, using much of the same sequences as described above. Once both heat exchangers are firing, the controls will work in synchronization to maintain the desired set point temperature. If the heat load should decrease sufficiently, the second heat exchanger will be shut down, much like the sequences described below.

Once both the space heating and HW calls for heat are satisified, the control will turn off the gas valve and begin the Post-Purge cycle. Any pumps that are running will begin their respective Pump Delay cycles.

At the end of the Post-Purge cycle, the louver contacts will open.

13.

14.

The control verifies that the blower stops running and the flap valve closes.

At the end of the Pump Delay cycle(s), the pump(s) will be turned off.

Installation & Operation Manual

10 Operating information

SYNC control module

The Status Screen displays boiler status, Cascade addresses, outlet water temperature, inlet water temperature, system temperature, and tank temperature.

The boiler can be changed by pressing the ON/OFF button. The Details Screen and Main Menu Screen can be accessed by pressing the appropriate button.

Figure 10-1 Status Screen

When the ON/OFF switch is turned to the ON position, the first screen visible on the LCD display will be the Status Screen. This screen displays the current status of the SYNC boiler. The following items can be viewed or interacted with on the Status Screen:

On/Off button - Pressing this button allows the boiler to be placed in either Manual Shutdown Mode or Standby Mode.

Boiler Status - This line shows the current operating status of the SYNC boiler. Displayed items are as follows:

• Manual Shutdown - The boiler will not respond to either a system call or a hot water generation call.

• Standby - The boiler has not received a system call or hot water generation call.

• SH Call for Heat - The boiler has received a system heat call.

• SH Pump Delay - The boiler has satisfied a system heat call and the boiler pumps are running for a fixed time to remove any residual heat.

• HW Storage - The boiler has received a hot water generation call.

• HW Pump Delay - The boiler has satisfied a hot water generation call and the hot water generator pumps are running for a fixed time to remove any residual heat.

• SH BMS - The boiler has received a call for heat from a 0-10 VDC BMS control.

• Service Set Point Met - While in Service Mode, the water temperature at either the outlet sensor or the system sensor has exceeded 185°F.

• HW Outlet Set Point Met - The outlet water temperature has exceeded the HW Generator Set Point parameter.

• OA Shutdown - The outside air temperature has exceeded the Outdoor Shutdown Set Point parameter.

• SH Set Point Met - The water temperature as measured by the system supply sensor has exceeded the User Set Point parameter or if the optional Outdoor Air Sensor was used, the calculated set point based on the Outdoor Reset parameters.

• Anti-Cycle Delay - The boiler has satisfied a system heat call, but has received another system heat call before the anti-cycling time parameter has elapsed.

• Cascade ComError - A communication error has occurred between the Control Module 1 and Control Module 2 or between the Leader and Member boilers.

10 Operating information (continued)

Installation & Operation Manual

Boiler Configuration - This line shows the current configuration of the two control modules inside the unit.

Outlet Water Temperature - This is a calculated temperature based on the readings of the outlet temperatures of the two (2) heat exchangers.

System Water Temperature - This is the water temperature as measured by the system supply sensor located in the downstream piping.

Inlet Water Temperature - This is a calculated temperature based on the inlet temperature readings from the two (2) heat exchangers.

Hot Water Tank Temperature - This is the temperature as measured by the tank sensor in the hot water storage tank.

Time - The time is displayed in the upper right-hand corner of the display. It is displayed in 24 hour format. Reference the SYNC Service Manual for Night Setback parameters and more information regarding adjusting the date and time.

Details button - Pressing this button brings up the Details Screen. This screen shows the status of the various safeties, inputs, and outputs to each control module. Reference the Details Screen section in the SYNC Service Manual for more information regarding this screen.

Main button - Pressing this button brings up the Main Screen. From this screen navigation to eight (8) other screens is possible. Reference the Main Screen section on page 56 of this manual for more information regarding this screen.

Installation & Operation Manual

10 Operating information

Use the Main Menu Screen (FIG. 10-2) to access the screens necessary to set temperatures, operating conditions, and monitor boiler operation.

The SYNC is equipped with a SMART TOUCH control system. All menu options are accessed by touching the screen with your finger or a stylus from a PDA.

Figure 10-2 Main Menu Screen

The Main Screen allows navigation to eight (8) additional screens which are used to set temperatures, operating conditions, and monitor boiler operation. These screens are as follows:

• Setup - Allows access to seven (7) other screens for the adjustment of the control parameters.

• Cascade - Shows the status of multiple boilers connected together in a cascade arrangement.

• Temps - Shows the temperatures measured by the individual sensors connected to the boiler.

• Burners - Shows the status of the two (2) independent burner systems used in the boiler.

• Building - Shows the information from a Building Integration System using Modbus Protocols.

• Graphs - Allows the selection of items to be graphed on a chart.

• History - Shows the operating and fault history of the two (2) control modules.

• Service Mode - Allows the installer to control the fan speed of the individual control modules for the purposes of combustion analysis. Service Mode will override all other heat demands, however, all safeties will remain intact.

Navigation to the Main Screen can be accomplished by pressing the MAIN button at the bottom of the page.

Reference the SYNC Service Manual for more information regarding the eight (8) accessible screens.

Time - The time is displayed in the upper right-hand corner of the display. It is displayed in 24 hour format. Reference the night setback parameters in the SYNC Servie Manual for information regarding adjusting the date and time.

Status button - Pressing this button displays the Status Screen. This screen shows the current status of the SYNC boiler. Reference pages 54 - 55 for more information regarding this screen.

11 Maintenance

Maintenance and annual startup

Table 11A Service and Maintenance Schedules

Installation & Operation Manual

Service technician

(see the following pages for instructions)

General:

• Address reported problems, if any

• Inspect interior; clean and vacuum if necessary;

• Clean condensate trap and fill with fresh water

• Check for leaks (water, gas, flue, condensate)

• Verify flue and air lines in good condition and sealed tight

• Check system water pressure/system piping/expansion tank

• Check control settings

• Check ignition and flame sense electrodes (sand off any deposits; clean and reposition)

• Check wiring and connections

• Perform start-up checkout and performance verification per Section 9.

• Flame inspection (stable, uniform)

ANNUAL START-UP

• Flame signal (at least 10 microamps at high fire)

• Clean the heat exchanger if flue temperature is more than 54°F (30°C) above return water temperature.

• Test low water flow conditions (reference the SYNC Service Manual).

Owner maintenance

(see the SYNC User’s Information Manual for

instructions)

• Check boiler area

Daily

Monthly

Every

6 months

• Check pressure/temperature gauge

• Check vent piping

• Check air piping

• Check air and vent termination screens

• Check relief valve

• Check condensate drain system

• Check automatic air vents

• Test low water cutoff

• Reset button (low water cutoff)

• Check boiler piping (gas and water) for leaks

• Operate relief valve

If combustion or performance indicate need:

• Clean heat exchanger

• Remove and clean burner using compressed air only

• Clean the blower wheel

End

of season

months

• Shut boiler down (unless boiler used for domestic hot water)

11 Maintenance

Installation & Operation Manual

 WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

 WARNING

The boiler should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the boiler designated in Table 11A and explained on the following pages must be performed to assure maximum boiler efficiency and reliability. Failure to service and maintain the boiler and system could result in equipment failure.

 WARNING

Electrical shock hazard – Turn off power to the boiler before any service operation on the boiler except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

Address reported problems

1. Inspect any problems reported by the owner and correct before proceeding.

Inspect boiler area

1. Verify that boiler area is free of any combustible materials, gasoline and other flammable vapors and liquids.

2. Verify that air intake area is free of any of the contaminants listed in Section 1 of this manual. If any of these are present in the boiler intake air vicinity, they must be removed. If they cannot be removed, reinstall the air and vent lines per this manual.

Figure 11-1 Condensate Trap

PVC TEE ASSEMBLY

(FACTORY SUPPLIED)

2” PVC CAP WITH

BLOCKED DRAIN SWITCH

RETAINING

SCREW

CONDENSATE FROM

HEAT EXCHANGER

Inspect boiler interior

1. Remove the front access cover and inspect the interior of the boiler.

2. Vacuum any sediment from inside the boiler and components. Remove any obstructions.

Clean condensate trap

1. Inspect the condensate drain line, condensate PVC

fittings, and condensate trap.

2. Remove the PVC cap retaining screw from the PVC cap

(FIG. 11-1).

3. Remove the 2 inch PVC cap with the switch located at the

top of the trap (FIG. 11-1).

4. Remove any sediment in the trap.

5. Fill with fresh water until the water begins to pour out of

the drain.

6. Replace the cap. Press the cap onto the trap until the cap

makes contact with the drain.

7. Replace the retaining screw.

TO FLOOR

DRAIN

 WARNING

The condensate trap must be filled with water during all times of boiler operation to avoid flue gas emission from the condensate drain line. Failure to fill the trap could result in severe personal injury or death.

Check all piping for leaks

 WARNING

1. Inspect all water and gas piping and verify to be leak free.

2. Look for signs of leaking lines and correct any problems found.

3. Check gas line using the procedure found in Section 6

- Gas Connections.

Eliminate all system or boiler leaks. Continual fresh makeup water will reduce boiler life. Minerals can build up in sections, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. Leaking water may also cause severe property damage.

11 Maintenance (continued)

Installation & Operation Manual

Flue vent system and air piping

1. Visually inspect the entire flue gas venting system and air piping for blockage, deterioration or leakage. Repair any joints that show signs of leakage. Verify that air inlet pipe is connected and properly sealed.

2. Verify that boiler vent discharge and air intake are clean and free of obstructions.

 WARNING

Failure to inspect for the above conditions and have them repaired can result in severe personal injury or death.

Check water system

1. Verify all system components are correctly installed and

operational.

2. Check the cold fill pressure for the system. Verify it is

correct (must be a minimum of 12 psi (82.7 kPa)).

3. Watch the system pressure as the boiler heats up (during

testing) to ensure pressure does not rise too high. Excessive pressure rise indicates expansion tank sizing or performance problem.

4. Inspect automatic air vents and air separators. Remove

air vent caps and briefly press push valve to flush vent. Replace caps. Make sure vents do not leak. Replace any leaking vents.

Check expansion tank

1. Expansion tanks provide space for water to move in

and out as the heating system water expands due to temperature increase or contracts as the water cools. Tanks may be open, closed or diaphragm or bladder type. See Section 5 - Hydronic Piping for suggested best location of expansion tanks and air eliminators.

 WARNING

Safety relief valves should be re-inspected AT LEAST ONCE EVERY THREE YEARS, by a licensed plumbing contractor or authorized inspection agency, to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occurring conditions may corrode the valve or its components over time, rendering the valve inoperative. Such conditions are not detectable unless the valve and its components are physically removed and inspected. This inspection must only be conducted by a plumbing contractor or authorized inspection agency – not by the owner. Failure to re-inspect the boiler relief valve as directed could result in unsafe pressure buildup, which can result in severe personal injury, death, or substantial property damage.

Following installation, the valve lever must be operated AT LEAST ONCE A YEAR to ensure that waterways are clear. Certain naturally occurring mineral deposits may adhere to the valve, rendering it inoperative. When manually operating the lever, water will discharge and precautions must be taken to avoid contact with hot water and to avoid water damage. Before operating lever, check to see that a discharge line is connected to this valve directing the flow of hot water from the valve to a proper place of disposal. Otherwise severe personal injury may result. If no water flows, valve is inoperative. Shut down the boiler until a new relief valve has been installed.

Check boiler relief valve

1. Inspect the relief valve and lift the lever to verify flow.

Before operating any relief valve, ensure that it is piped with its discharge in a safe area to avoid severe scald potential. Read Section 5 - Hydronic Piping before proceeding further.

2. After following the above warning directions, if the relief valve weeps or will not seat properly, replace the relief valve. Ensure that the reason for relief valve weeping is the valve and not over-pressurization of the system due to expansion tank waterlogging or undersizing.

11 Maintenance

Installation & Operation Manual

Inspect ignition and flame sense electrodes

1. Remove the ignition and flame sense electrodes from the boiler heat exchanger access covers.

2. Remove any deposits accumulated on the ignition/ flame sense electrode using sandpaper. If the electrodes cannot be cleaned satisfactorily, replace with new ones.

3. Replace ignition/flame sense electrodes, making sure the gaskets are in good condition and correctly positioned.

Check ignition ground wiring

1. Inspect boiler ground wire from the heat exchanger access cover to ground terminal strip.

2. Verify all wiring is in good condition and securely attached.

3. Check ground continuity of wiring using continuity meter.

4. Replace ground wires if ground continuity is not satisfactory.

Check burner flame

1. Inspect flame through observation window.

2. If the flame is unsatisfactory at either high fire or low fire, turn off boiler and allow boiler to cool down. Remove the burners and clean them thoroughly using a vacuum cleaner or compressed air. Do not use compressed air to clean burners if performed inside a building.

3. Remove the burners, reference FIG. 11-2.

4. When replacing the burners, ensure gaskets are in good condition and positioned correctly (FIG. 11-2).

Figure 11-2 Burner Assembly

DOOR FIBER

BURNER DOOR

HEX NUT (6)

BURNER

AIR/GAS GASKET

FLAPPER VALVE

SCREW (5X)

FLAPPER VALVE

FLAME SENSE

SCREW (2X)

IGNITER

FLAME SENSE

IGNITER GASKET

FLAME SENSE

GASKET

IGNITER SCREW (2X)

Check all boiler wiring

1. Inspect all boiler wiring, making sure wires are in good condition and securely attached.

Check control settings

1. Set the control module display to Parameter Mode and check all settings. See Section 1 of the SYNC Service Manual. Adjust settings if necessary. See Section 1 of the SYNC Service Manual for adjustment procedures.

2. Check settings of external limit controls (if any) and adjust if necessary.

Perform start-up and checks

1. Start boiler and perform checks and tests specified

in Section 9 - Start-up.

2. Verify cold fill pressure is correct and that operating

pressure does not go too high.

Check flame signal

1. At high fire the flame signal shown on the display should be at least 10 microamps.

2. A lower flame signal may indicate a fouled or damaged flame sense electrode. If cleaning the flame sense electrode does not improve, ground wiring is in good condition, and ground continuity is satisfactory, replace the flame sense electrode.

3. See Section 3 - Troubleshooting in the SYNC Service Manual for other procedures to deal with low flame signal.

Review with owner

1. Review the SYNC User’s Information Manual with the owner.

2. Emphasize the need to perform the maintenance schedule specified in the SYNC User’s Information Manual (and in this manual as well).

3. Remind the owner of the need to call a licensed contractor should the boiler or system exhibit any unusual behavior.

4. Remind the owner to follow the proper shutdown procedure and to schedule an annual start-up at the beginning of the next heating season.

11 Maintenance (continued)

Installation & Operation Manual

Cleaning boiler heat exchanger

For recommended materials; including brush, appropriate extension(s), refractory cover, and detailed instructions see Table 11B - Heat Exchanger Cleaning Kits.

1. Shut down boiler:

• Follow the “To Turn Off Gas to Appliance” instructions for the boiler in Section 9 - Startup.

• Do not drain the boiler unless it will be exposed to freezing temperatures. If using freeze prevention fluid in system, do not drain.

2. Allow time for the boiler to cool to room temperature if it has been firing.

3. Remove the nuts securing the heat exchanger access cover to the heat exchanger and set aside.

4. Remove the heat exchanger access cover, burner, and

gas/air arm assembly.

 WARNING

The boiler contains ceramic fiber materials. Use care when handling these materials per instructions on page 62 of this manual. Failure to comply could result in severe personal injury.

Table 11B Heat Exchanger Cleaning Kits

Model

Number

SB 1.0 - 1.5 KIT30064

 CAUTION

Figure 11-3 Rope Gasket - Heat Exchanger Door

Kit

Number

* Do NOT use a metal brush. Only use the kit provided brush or an equivalent replacement nylon brush.

Part

Number

MSC20083* Nylon 4" Wheel Brush*

MSC20085 1/4" x 12" Drill Extension

MSC20086 1/4" x 24" Drill Extension

Component Description

ROPE GASKET

5. Remove the condensate hose from the heat exchanger end. Connect a field supplied 3/4" diameter hose to a drain pan. Using field supplied means, cover the refractory in the back of the combustion chamber of the heat exchanger.

6. Use a vacuum cleaner to remove any accumulation on the boiler heating surfaces. Do not use any solvent.

7. Brush the heat exchanger while dry using a nylon bristle brush. Caution: DO NOT use a metal brush. Re-vacuum the heat exchanger.

8. Finish cleaning using a clean cloth dampened with warm water. Rinse out debris with a low pressure water supply.

9. Allow the heat exchanger to thoroughly dry.

10. Remove the field supplied rear refractory cover from the back of the combustion chamber of the heat exchanger and reassemble.

11. Close isolation valves on piping to isolate boiler from system. Attach a hose to the boiler drain and flush boiler thoroughly with clean water by using purging valves to allow water to flow through the water make-up line to the boiler.

12. Perform start-up and check-out procedures in the Check Flame and Combustion - Section 9 - Startup on pages 45 and 47 of this manual.

13. Replace the access cover and restore boiler to operation.

NOTICE

CAUTION: IF GASKET IS DAMAGED

DO NOT REUSE, THE HEAT EXCHANGER DOOR

MUST BE REPLACED.

Rope gasket is intended for sealing combustion (FIG. 11-3). If damaged DO NOT reuse, the heat exchanger door must be replaced. Consult factory for replacement heat exchanger door (kit WTR3086).

11 Maintenance

Handling ceramic fiber materials

REMOVAL OF COMBUSTION CHAMBER LINING

 WARNING

The combustion chamber insulation in this appliance contains ceramic fiber material. Ceramic fibers can be converted to cristobalite in very high temperature applications. The International Agency for Research on Cancer (IARC) has concluded, “Crystalline silica in the form of quartz or cristobalite from occupational sources is carcinogenic to humans (Group 1).” Normal operating temperatures in this appliance are below the level to convert ceramic fibers to cristobalite. Abnormal operating conditions would have to be created to convert the ceramic fibers in this appliance to cristobalite.

The ceramic fiber material used in this appliance is an irritant; when handling or replacing the ceramic materials it is advisable that the installer follow these safety guidelines.

Avoid breathing dust and contact with skin and eyes.

• Use NIOSH certified dust respirator (N95). This type of respirator is based on the OSHA requirements for cristobalite at the time this document was written. Other types of respirators may be needed depending on the job site conditions. Current NIOSH recommendations can be found on the NIOSH website at http://www.cdc.gov/niosh/homepage.html. NIOSH approved respirators, manufacturers, and phone numbers are also listed on this website.

Installation & Operation Manual

• Wear long-sleeved, loose fitting clothing, gloves, and eye protection.

Apply enough water to the combustion chamber lining to prevent airborne dust.

 Remove the combustion chamber lining from the boiler and place it in a plastic bag for disposal.

 Wash potentially contaminated clothes separately from other clothing. Rinse clothes washer thoroughly.

NIOSH stated First Aid.

 Eye: Irrigate immediately.  Breathing: Fresh air.

12 Diagrams

Figure 12-1 Ladder Diagram_Part 1

Installation & Operation Manual

BOX DEPICTS

OPTIONAL ITEMS

LOW VOLTAGE

120 VAC

HIGH VOLTAGE

LOUVER RELAY 1

INLET

SENSOR

OUTLET

SENSOR

GAS VALVE

BLOWER

SPARK

ROD

FLUE

FLAP

VALVE

HI-LIMIT

BLOCKED

DRAIN

AUTO RESET

HIGH LIMIT

AIR PRESSURE

SWITCH

X2-2

X2-1

X5-5

X5-13

X5-6

X5-12

TR1

X1-7

FLAME ROD

CONTROL MODULE 1

24V

GAS VALVE

RELAY

LOUVER RELAY 2

GAS VALVE

SENSOR

OUTLET

SENSOR

BLOWER

SPARK

ROD

INLET

FLUE

FLAP

VALVE

AIR PRESSURE

HI-LIMIT

AUTO RESET

HIGH LIMIT

FLAME ROD

X6-8

X5-7

X5-4

X5-14

X5-8

X5-1

X5-9

X5-2

X5-3

X5-10

SWITCH

X2-2

X2-1

TR1

X1-7

X5-13

X5-12

CONTROL MODULE 2

X5-7

24V

X5-4

X5-14

X6-8

X5-8

X5-1

X5-9

X5-2

X5-3

X5-10

GAS VALVE

RELAY

X5-5

X5-6

CAUTION HIGH VOLTAGE SPARK LEAD

CONNECTION BOARD

CN3

CN4-3

CN4-1

CN4-2

CN4-4

CN4-6

CN4-5

CN4-8

CN4-7

CN4-9

CN4-10

MOD BUS

KIT

10VDC

CN3-16

CN3-15

CN3-14

CN3-13

CN3-12

CN3-11

CN3-10

CN3-9

CN3-8

CN3-7

CN3-6

CN3-5

CN3-4

CN3-3

CN3-2

CN3-1

SHIELD

CASCADE

RS485

SHIELD

TANK

SENSOR

OUTDOOR

SENSOR

SYSTEM SENSOR

EXTERNAL

CONTROL

SHIELD

MOD BUS

RS485

SHIELD

NOTES:

1. Where possi ble, switches are s hown without uti lities (gas, wate r or electri city) connected t o the unit. As such, a ctual switch stat es may vary from those shown on diagrams depending upon whether utilities are connect ed or a fault cond ition is present.

2. See wiri ng diagram for addit ional notes.

X4-2

X4-4

X4-6

X4-5

X4-8

X4-7

X4-9

X4-10

X4-3

X4-1

CAUTION HIGH VOLTAGE SPARK LEAD

CONTROL MODULE 1

X4-3

X4-1

X4-2

X4-4

CONTROL

MODULE 2

LADDER DIAGRA M LBL20058 REV E

12 Diagrams

Figure 12-2 Ladder Diagram_Part 2

120VAC

TERMINAL STRIP

120V SUPPLY "L"

ON / OFF

SWITCH

X1-6

-8

JUNCTION

5-7

X6-7

X6-2

ON / OFF

ITCH

1-6

X1-8

UNCT

X5-7

-7

X6-2

CONNECTI

BOARD

CN1-4

CN1-12

CN1-13

TEST S

WCO

J3-4

J3-5

3-6

WIT

CONTROL MODULE 1

F3 25A

120 VAC

24 VAC

NTROL MODULE 2

1.25A

120

24 VAC

LOUVER

ROVI

HEX FLOW

TCH

SWI

HEX 2

WIT

FLOW S

THERMOSTAT

ENABLE

RUN TI

CONTA

ALARM

CONTA

JUNCTION BOX

SYST

BOI

DHW PU

RELAY

SYSTEM

BOI

DHW

VAC

PUMP

LAY

LO RELAY

RELAY

LER PUMP

LAY

PUM LAY

ELAY

X1-2

UMP

1-4

X1-3

X1-1

1-5

6-8

6-3

X1-2

UMP

-4

X1-3

1-1

X6-8

NNE

BOARD

TERMINAL STRIP 120V SUPPLY "N"

SYSTEM PUMP

LAY

HEX 1

LER PUMP

RELAY

BLOWER

J3-2

HEX

UMP

LER

BOI

ELAY

BLOWER

CN1-6

CN1-3

CN1-11

CN1-15

CN1-10

CN1-7

CN1-8

Installation & Operation Manual

GROUND

NEUTRAL

DHW

JUNCTION BOX

NOTES:

1. Where possible, switches ar electricity) connected to the unit. As such, a vary from those shown on dia are connected or a fault condition is present.

2. See wiri

RELAY

ED)

D SUPPL

FIEL

(

e sho

PRESSURE

grams dependi

ng diagram for additional notes.

BOX DEPICTS

OPTIONAL ITEMS

LOW VOLTAGE 120 VAC

HIGH VOLTAGE

JUNCTION BOX

LOUVER

CONTACTS

HEX 1

ER PUMP

ACTS

HEX 2

PUMP

NTACTS

SYSTEM

PUM

ACTS

DHW PUMP NTACTS

D SUPPLIED)

FIEL

(

GH GAS

RESSURE

TCH

HIGH GAS

PRESSURE

TCH 2

CONT

X6-

X6-9

X6-1

6-6

X3-2

X3-4

3-1

X3-3

ODULE

6-10

6-9

X3-2

3-4

X3-1

X3-3

tili

n without u

ctual switch states may

upo

CH 1

ROL

DULE

NTROL

ties (gas, water or

n whether utilities

DIAGRAM

LADDER LBL20046 REV E

LER

BOI

PUMP

PUM

SYSTEM

PUM

DHW

PUMP

CONTROL

ODULE

X6-5

DULE

X6-5

N / L2

ROL

12 Diagrams (continued)

Figure 12-3 Wiring Diagram

PC INTERFACE

CONNECTION BOARD

CN3

TANK

HEX 2

FLOW

HEX 1

FLOW

ALARM

CN3-16

CN3-15

CN3-14

CN3-13

CN3-12

CN3-11

CN3-10

CN3-9

CN3-8

CN3-7

CN3-6

10VDC

CN3-5

CN3-4

CN3-3

CN3-2

CN3-1

CN2-14

CN2-13

CN2-12

CN2-11

CN2-10

CN2-9

CN2-8

CN2-7

CN2-6

CN2-5

CN2-4

CN2-3

CN2-2

CN2-1

CN2

SHIELD

CASCADE

RS485

SHIELD

TANK

SENSOR

OUTDOOR

SENSOR

SYSTEM SENSOR

EXTERNAL

CONTROL

SHIELD

MOD BUS

RS485

SHIELD

ENABLE

THERMOSTAT

SWITCH

LOUVER

PROVING

RUNTIME

CONTACTS

CAUTION HIGH VOLTAGE SPARK LEAD

CN4

CN1

CN1-10

CN1-2

CN1-9

CN1-11

CN1-3

CN1-4

CN1-5 CN1-6

CN1-13

CN1-14

CN1-12

CN1-15

CN1-16

CN1-8

CN1-7

CN1-1

MOD BUS

CM 2 PC

INTERFACE

KIT

4 CONDUCTORS

CM 1 PC INTERFACE

CONTROL MODULE 1

X6-2

X6-7

X6-6

X6-1

X6-9

X6-5

OR/BK

X6-10

X3-2

X3-4

X3-1

X3-3

Installation & Operation Manual

LOW VOLTAGE

120 VAC

X1-4

X1-2

X1-3

X1-6

X1-5

X1-8

X1-1

X5-5

X5-13

X5-6 X5-12

X5-4

X5-10

X5-7

X5-14

X5-3

X5-8

X5-1

X5-2

X5-9

X6-8

X2-2

X2-1

X1-7

HIGH VOLTAGE

132

BLOWER

245

BK OR

AUTO RESET LIMIT

W/RD

BLOCKED

DRAIN

RELAY BOARD

ON/OFF SWITCH

LOUVER

CONTACTS

OPTIONAL ITEMS

HI-LIMIT

BOX DEPICTS

JUNCTION

BOX

GND

LOUVER

LOUVER RELAY 1

RELAY 1

APS

O-TEMP HEX SW

SPARK

ROD

FLAME ROD

FLAP VALVE

INLET SENSOR

OUTLET SENSOR

FLUE SENSOR

LOUVER

BOILER 2

BOILER 1

SYSTEM PUMP

HW PUMP RELAY

120V SUPPLY

GND

GAS VALVE

WIRING DIAGRAM LBL20045 REV H

LOW

WATER

CUTOFF

BOARD

CONTROL MODULE 2

LOW GAS

PRESSURE SWITCH

HIGH GAS

PRESSURE 1

HIGH GAS

PRESSURE 2

X6-5

TEST

SWITCH

J3-1

J3-1 J3-2 J3-3 J3-4 J3-5 J3-6

J2-1

J2-2

J2-3

Notes:

1. All wiring must be installed in accordance with: local, state, provincial and national code requirements per either N.E.C. in USA or C.S.A. in Canada.

2. If any original equipment wire as supplied with the appliance must be replaced, it must be replaced wit h wire having same wire gauge (AWG) and rated for a

minimum of 105°C. Exceptions: Replacement high voltage spark lead and ribbo n cables must be purchased from the factory. Use of a non-approved spark lead

or ribbon cables can lead to operational problems which could result in non-repairable damage to the integrated c ontroller or other components.

3. Actual connector block locations may vary from those shown on diagrams. Refer to actual component s for proper connector block locations when using

diagrams to troubleshoot unit.

PROBE

OR/BK

RESET

CAUTION HIGH VOLTAGE SPARK LEAD

OR/BK

X6-9

X6-10

X3-2

X3-4

X3-1

X3-3

X1-2

X1-4

X1-3

X1-5

X1-6

X1-8

X1-1

X5-5

X5-13

X5-6

X5-12

X5-4

X5-10

X5-7

X5-14

X5-3

X5-8

X5-1

X5-2

X5-9

X6-8

X2-2

X2-1

X1-7

OR/BK

GR/BK

PR/BK

BK/RD

W/BK

T/BK

BL/BK

RD/BK

Y/BK

SPARK

RD/W

132

BLOWER

245

AUTO RESET LIMIT

ROD

O-TEMP HEX SW

HI-LIMIT

GAS VALVE

FLAME ROD

APS

LOUVER RELAY 2

FLAP VALVE

INLET SENSOR

OUTLET SENSOR

FLUE SENSOR

Notes

Revision Notes: Revision A (ECO #C02428) initial release.

Revision B (ECO #C03046) reflects the addition of FIG. 5-3 on page 27, the addition of a pressure gauge to FIG. 5-6 on page 30, edits made to FIG. 7-1 on page 35, edits made to the Low Water Cutoff Protection section on page 48 along with the addition of the Flow Sensing Device section.

Revision C (ECO #C03223) reflects edits made to the high altitude section on page 6.

Revision D (ECO #C03735) reflects edits made to the venting section removal of B149.2, along with the addition of the hydro and dirt separator.

Revision E (ECO #C04062) reflects changes to the terminology in all SYNC manuals and labels from module to heat exchanger (exception: control module), along with changing out “dirt separator” for “Y-strainer (ECR #R02455), edits made to the ceramic fiber material warning, removal of the stabilitor from FIG. 11-2 (C04057), and placing the illustrations disclaimer on all the piping drawings (ECR #R02431).

Revision F (ECO #C04560) reflects the addition of Modbus to the manual, new heat exchanger cleaning procedure, schedule 80 as acceptable CPVC material (Table 2A) (R02799), and changes made to Table 5A.

Revision G (ECO C07283) reflects the update of FIG. 7-1 on page 38 to show current label and wiring connections along with an update to the Ladder and Wiring diagrams on pages 64 and 65.

Revision H (ECO C07679) reflects the update of FIG. 6-1 on page 34 to show the gas pressure regulator, ECR 04077 - combustible water pipes changed from 1" to a 1/4", addition of the rope gasket notice on page 61 (R03940) and changes made to Table 2A on page 19.

Revision I (ECO C07981) reflects the addition of the O-temp switch and edits made to LBL20045 (ECR R04243 and C07959 - add O-temp switch, changes made to Table 5A on page 31 (ECR R04335) and change Module 1 and 2 callouts to HEX 1 and 2 on the label).

SYNC-I-O Rev I

05/11

Lochinvar 1.0,1.3,1.5 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual