Raypak XVers L 406L-856L Type H Mode d'emploi

• •A

WARNING: Improper installation, adjustment, alteration, service, or maintenance can cause property

damage, personal injury, exposure to hazardous materials*, or loss of life. Review the information in this

PDQXDO FDUHIXOO\ 7KLV XQLW FRQWDLQV PDWHULDOV WKDW KDYH EHHQ LGHQWL¿HG DV FDUFLQRJHQLF RU SRVVLEO\

carcinogenic, to humans.

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and liquids or other

combustible materials in the vicinity of this or any other appliance. To do so may result in an explo-

sion or fire.

WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

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

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

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

reference.

CATALOG NO. 3400.582

Effective: 09-01-19

Replaces: New

P/N 241782

INSTALLATION AND

OPERATION MANUAL

Models 406L - 856L Type H

2

QUICK START GUIDE

CLEARANCES

 Space required: 3 ft. x 3 ft. See page 8.

 Minimum and service clearances: See page 9 for

clearances table. Note that local code prevails.

COMBUSTION AIR

 $LU¿OWHUORFDWLRQ6HHSDJH

 Ducting materials: PVC, CPVC, or sealed single-wall

galvanized ducting,see page 12 for details.

PIPING

 Piping options: Primary/secondary piping. Note that

the heater should be located so that any water leaks

will not cause damage to the adjacent area.

 Pressure relief valve: See page 13 for recommended

PRV orientation.

 )ORZUDWHV6HHSDJHIRUÀRZYDOXHVWDEOH

 Primary/secondary piping: See pages 15-22 for

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and cascades).

 Tanks: All heaters should be equipped with a

properly-sized expansion tank and air separator

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GAS

 'LVWDQFHWRUHJXODWRUSLSHOHQJWKVDQGJDVLQOHW

sizes: See page 23.

 Required pressure for natural gas:

Min. = 4" WC, Max. = 10.5" WC

 Required pressure for propane:

Min. = 4" WC, Max. = 13" WC

 Sediment trap is required for all installations.

POWER

 Supply voltage: See page 25 for input voltage table.

VENTING - CAT IV

 Materials: PVC, CPVC, Polypropylene, stainless

steel, see pages 31-32.

 Venting diagrams:

For stainless steel and polypro, see pages 33-35.

For PVC/CPVC see pages 36-39.

 Outdoor venting:

Outdoor Vent Kit. See page 40.

CONTROLS INTERFACE

 User interface:

VIEW menu is the default menu, see page 50.

To change settings, use the SETUP/ADJUST menu,

see page 50.

 Wiring diagram: See page 56.

OPERATION

 Boiler Status Light: See page 62.

3

CONTENTS

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

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

2. BEFORE INSTALLATION ...................................... 5

Product Receipt ...................................................... 5

0RGHO,GHQWL¿FDWLRQ ................................................. 5

5DWLQJVDQG&HUWL¿FDWLRQV ....................................... 5

Installations at Elevation ......................................... 5

3. INSTALLATION ....................................................... 5

Installation Codes ................................................... 5

Component Locations ............................................. 6

Equipment Base .....................................................7

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

Pallet Jack/Forklifting .............................................. 8

Outdoor Installation ................................................. 9

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

Inside Air Contamination ....................................... 11

Air Supply ............................................................. 12

Water Piping ......................................................... 13

Hydronic Heating .................................................. 14

Gas Supply Connection ........................................ 23

Electrical Power Connections ............................... 24

0XOWLSOH9ROWDJH&RQ¿JXUDWLRQV ............................ 25

Field-Connected Devices ...................................... 25

Venting - General .................................................. 30

Vent Terminal Location .........................................30

Venting Installation Tips ........................................ 33

9HQWLQJ&RQ¿JXUDWLRQV .......................................... 33

9HUWLFDO9HQWLQJ&DWHJRU\,96WDLQOHVV6WHHO

and Polypropylene ................................................ 33

Direct Vent-Vertical - Stainless Steel

and Polypropylene ................................................ 34

Horizontal Through-the-Wall and Direct Vent -

Horizontal - Stainless Steel and Polypropylene .... 35

9HUWLFDO9HQWLQJ&DWHJRU\,939&&39& ......... 36

Direct Vent - Vertical - PVC/CPVC ........................ 37

Horizontal Through-the-Wall and Direct

Vent - Horizontal - PVC/CPVC .............................. 38

Outdoor Installation ............................................... 40

Common Venting .................................................. 40

Condensate Treatment ......................................... 41

4. CONTROLS ........................................................... 42

Sequence of Operation ......................................... 42

Freeze Protection .................................................42

VERSA Integrated Control ................................... 44

Glycol % Setting ...................................................45

Vent Protection ..................................................... 45

Control Devices .................................................... 46

User Interface ....................................................... 50

5. WIRING DIAGRAM ............................................... 56

6. START-UP .............................................................. 57

Pre Start-up ..........................................................57

Pre Start-up Check ............................................... 57

Initial Start-up ........................................................ 57

Preparation ........................................................... 57

Start-Up ................................................................58

7. OPERATION .......................................................... 61

Lighting Instructions .............................................. 61

7R7XUQ2ႇ*DV7R$SSOLDQFH ............................... 62

Boiler Status Light ................................................. 62

8. TROUBLESHOOTING ......................................... 62

XVers L Error Codes ............................................. 62

Heater Errors ........................................................ 62

Heater Faults ........................................................ 62

Raymote Troubleshooting ..................................... 63

XVers L Fault Text ................................................. 63

9. MAINTENANCE .................................................... 65

Suggested Minimum

Maintenance Schedule ......................................... 65

Preventive Maintenance Schedule ....................... 66

Filter Maintenance ................................................ 67

10. IMPORTANT INSTRUCTIONS FOR THE

COMMONWEALTH OF MASSACHUSETTS .... 68

NOTE: Patent pending features utilized in XVers L construction and operation.

4

1. WARNINGS

Pay Attention to These Terms

• •A

DANGER: Make sure the gas on which the boiler will

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rating plate.

• •A

WARNING: %RLOHUV XVLQJ SURSDQH JDV DUH GLႇHUHQW

from natural gas models. A natural gas boiler will not

function safely on propane and vice versa. Conversions

RI ERLOHU JDV W\SH VKRXOG RQO\ EH PDGH E\ TXDOL¿HG

installers using factory supplied components. The boiler

should only use the fuel type in accordance with listing

on rating plate. Any other fuel usage will result in death

RUVHULRXVSHUVRQDOLQMXU\IURP¿UHDQGRUH[SORVLRQ

• •A

WARNING: Do not use this boiler if any part has

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technician to inspect the boiler and to replace any part

of the control system and any gas control which has

been under water.

• •A

WARNING: To minimize the possibility of improper

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boiler:

• Always keep the area around the boiler free of

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liquids and vapors.

• Boiler should never be covered or have any blockage

WRWKHÀRZRIIUHVKDLUWRWKHERLOHU

• •A

CAUTION: This boiler requires forced water

circulation when the burner is operating. See Table E

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ERLOHULVRSHUDWHGZLWKRXWSURSHUZDWHUÀRZFLUFXODWLRQ

• •A

WARNING: Risk of electrical shock. More than one

disconnect switch may be required to de-energize the

equipment before servicing.

NOTE: 0LQLPXP SLSH VL]H IRU WKH ERLOHU LQOHWRXWOHW

connections is dependent on the equivalent length of

piping between the load loop and the boiler loop, the

operating conditions and the size of the boiler. See Table

G and Table H.

• •A

WARNING: Should overheating occur or the gas

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WKHHOHFWULFDO VXSSO\ WR WKH ERLOHU,QVWHDG VKXW Rႇ WKH

gas supply at a location external to the boiler.

• •A

CAUTION: If this boiler is to be installed in a negative

or positive pressure equipment room, there are special

installation requirements. Consult factory for details.

• •A

WARNING: Both natural gas and propane have an

odorant added to aid in detecting a gas leak. Some

people may not physically be able to smell or recognize

this odorant. If you are unsure or unfamiliar with the

smell of natural gas or propane, ask your local gas

supplier. Other conditions, such as “odorant fade,”

which causes the odorant to diminish in intensity, can

DOVR KLGH FDPRXÀDJH RU RWKHUZLVH PDNH GHWHFWLQJ D

JDVOHDNE\VPHOOPRUHGLႈFXOW

• •A

DANGER

Indicates the presence of immediate hazards which will cause severe personal injury, death or

substantial property damage if ignored.

• •A

WARNING

Indicates the presence of hazards or unsafe practices which could cause severe personal injury,

death or substantial property damage if ignored.

• •A

CAUTION

Indicates the presence of hazards or unsafe practices which could cause minor personal injury or

product or property damage if ignored.

CAUTION

CAUTION used without the warning alert symbol indicates a potentially hazardous condition which

could cause minor personal injury or product or property damage if ignored.

NOTE

Indicates special instructions on installation, operation, or maintenance which are important but not

related to personal injury hazards.

5

2. BEFORE INSTALLATION

Raypak strongly recommends that this manual be re-

viewed thoroughly before installing your XVers L boiler.

Please review the General Safety information before

installing the boiler. Factory warranty does not apply to

boilers that have been improperly installed or operated.

Refer to the warranty at the back of this manual.

,QVWDOODWLRQDQGVHUYLFHPXVWEHSHUIRUPHGE\DTXDOL¿HG

installer, service agency, or gas supplier. If, after reviewing

this manual, you still have questions which this manual

does not answer, please contact your local Raypak

representative or visit our website at www.raypak.com.

NOTE: Raypak recommends laying out and installing

the vent system before installing water piping. This

will ensure that the venting system and associated

FRPSRQHQWV ZLOO ¿W LQWR WKH DWWDFKHG VSDFH IRU SURSHU

operation.

Thank you for purchasing a Raypak product. We hope you

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equipment.

Product Receipt

On receipt of your boiler visually check for external damage

to the shipping crate. If the crate is damaged, make a

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the shipment. Next, remove the boiler from the shipping

packaging. Report any damage to the carrier immediately.

On occasion, items are shipped loose. Be sure that you

receive the correct number of packages as indicated on

the Bill of Lading.

&ODLPVIRUVKRUWDJHVDQGGDPDJHVPXVWEH¿OHGZLWKWKH

carrier by consignee. Permission to return goods must

be received from the factory prior to shipping. Goods

returned to the factory without an authorized Returned

Goods Receipt number will not be accepted. All returned

goods are subject to a restocking charge. When ordering

parts, you must specify the model and serial number of

the boiler. When ordering under warranty conditions, you

must also specify the date of installation.

Purchased parts are subject to replacement only under the

manufacturer’s warranty. Debits for defective replacement

parts will not be accepted. Parts will be replaced in kind

only per Raypak’s standard warranties.

0RGHO,GHQWL¿FDWLRQ

7KHPRGHOLGHQWL¿FDWLRQQXPEHUDQGERLOHUVHULDOQXPEHU

are found on the rating plate located on the rear jacket

panel of the boiler. The model number will have the form

H7-856L* or similar depending on the boiler size and

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• 7KHOHWWHUVLQWKH¿UVWJURXSRIFKDUDFWHUVLGHQWL¿HV

WKHDSSOLFDWLRQ+ +\GURQLF+HDWLQJ

• 7KHQXPEHUZKLFKIROORZVLGHQWL¿HVWKH¿ULQJPRGH

 HOHFWURQLFPRGXODWLRQ

• 7KH VHFRQG JURXS RI FKDUDFWHUV LGHQWL¿HV WKH VL]H

RI WKH ERLOHU WKH IRXU QXPEHUV UHSUHVHQWLQJ WKH

approximate MBTUH input), and, where applicable, a

letter, indicating the manufacturing series.

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Standards

• ANSI Z21.13 · CSA 4.9 - latest edition, Gas-Fired Hot

Water Boilers

• CAN 3.1 - latest edition, Industrial and Commercial

Gas-Fired Package Boilers

All Raypak boilers are National Board registered, and

GHVLJQFHUWL¿HG DQG WHVWHG E\ WKH &DQDGLDQ 6WDQGDUGV

$VVRFLDWLRQ&6$IRUWKH86DQG&DQDGD(DFKERLOHULV

constructed in accordance with Section IV of the American

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Vessel Code and bears the ASME "H" stamp. This boiler

also complies with the latest edition of the ASHRAE 90.1

Standard.

• •A

WARNING: Altering any Raypak pressure vessel by

installing replacement heat exchangers, or any ASME

SDUWVQRWPDQXIDFWXUHGDQGRUDSSURYHGE\5D\SDNZLOO

instantly void the ASME and CSA ratings of the vessel

and any Raypak warranty on the vessel. Altering the

ASME or CSA ratings of the vessel also violates national,

state, and local approval codes.

Installations at Elevation

5DWHG LQSXWV DUH VXLWDEOH IRU XS WR  IW  P

elevation. Consult your local representative or the factory

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sea level. No hardware changes are required to the boilers

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may be required).

3. INSTALLATION

Installation Codes

Installations must follow these codes:

• Local, state, provincial, and national codes, laws,

regulations and ordinances

• National Fuel Gas Code, ANSI Z223.1/NFPA 54 –

ODWHVWHGLWLRQ1)*&

• National Electrical Code, ANSI/NFPA 70 - latest

HGLWLRQ1(&

• Standard for Controls and Safety Devices for

Automatically Fired Boilers, ANSI/ASME CSD-1,

&6'ZKHQUHTXLUHG

• For Canada only: CAN/CSA B149 Natural Gas and

Propane Installation Code and CSA C22.1 C.E.C.

3DUW&

6

FILTER BOX

CONTROL BOX

COMBUSTION

AIR BLOWER

HEAT EXCHANGER

FRONT OF HEATER

LOW WATER

PROBE

LOW VOLTAGE

FIELD CONNECTION

PRESSURE SWITCH

VENT DIFFERENTAL

WATER

OUTLET

GAS SUPPLY

CONNECTION

WATER INLET

F10574

HEAT EXCHANGER

DRAIN PLUG

Component Locations

Figure 1. Component Locations – Side View

Figure 2. Component Locations - Front View

Figure 3. Component Locations - Rear View

VERSA BOARD

208V

TRANSFORMER

(OPTIONAL)

CONDENSATE

TRAP ASSY

RESET BUTTON

TOUCHSCREEN DISPLAY

3-POSITION

ROCKER SWITCH

GAS TRAIN

BALL VALVE

GAS VALVE

MODULATING

PROGRAMMABLE

IGNITION

MODULE

(PIM)

MAIN POWER

SWITCH

CONDENSATE

TREATMENT

(OPTIONAL)

DRAIN PLUG

F10575

AUTO

HIGH LIMIT

(OPTIONAL)

MANUAL

HIGH LIMIT

(OPTIONAL)

406L - 506L = 1 NPT

606L - 856L = 1-1/4 NPT

GAS SUPPLY

CONNECTION

FLUE OUTLET

TEMP INLET

SENSOR

LOW VOLTAGE

FIELD

CONNECTION

RATING PLATE

F10576

WATER OUTLET

406L - 606L = 2 NPT

726L - 856L = 2-1/2 NP

CONDENSATE DRAIN

3/4 NPT FEMALE

WATER INLET

406L - 606L = 2 NPT

726L - 856L = 2-1/2 NP

Model

No.

Input

MBTUH (Kw)

Flue Size

in. (mm)

Max Min Flue Intake

406L

399



40



4



4



506L

500



50



4



4



606L

600



85.7



4



4



726L

725



103.6



6



6



856L

850



121.4



6



6



Table A. Basic Product Data

7

Figure 4. Component Locations - Top View

F10577

IGNITER

FLUE OUTLET

FLAME SENSOR

BURNER FLAME

VIEWING PORT

BLOWER

ASSEMBLY

FRONT OF HEATER

AIR BLEED

PRESSURE SWITCH

VENT DIFFERENTAL

AIR FILTER BOX

DIRECT VENT

COMBUSTION

AIR CONNECTION

(OPTIONAL)

FLUE GAS ANALYZER

TEST PORT

HIGH GAS

PRESSURE SWITCH

(OPTIONAL)

LOW GAS

PRESSURE SWITCH

(OPTIONAL)

Equipment Base

The boiler should be mounted on a level, structurally

sound surface. The boiler is approved for installation on

a combustible surface but must NEVER be installed on

carpeting. Gas-fueled equipment installed in enclosed

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DERYHWKHÀRRU

CAUTION: This boiler should be located in an area

where water leakage will not result in damage to the area

adjacent to the appliances or to the structure.

In addition, the boiler shall be installed such that the gas

ignition system components are protected from water

GULSSLQJVSUD\LQJUDLQHWFGXULQJDSSOLDQFHRSHUDWLRQ

RU VHUYLFH FLUFXODWRU UHSODFHPHQW FRQWURO UHSODFHPHQW

etc.).

If the boiler needs to be secured to the ground, use the

hole pattern shown in Figure 7 and Figure 8, following

local codes.

Clearances

Indoor Installations

Heater Side

Minimum

Clearances from

Combustible

Surfaces

in. (mm)

Minimum Service

Clearance

in. (mm)

Floor * 0 0

Rear  

Right Side 0 0

Left Side 0 0

Top 0 

Front Open 

Vent  

* DO NOT install on carpeting

Table B. Clearances - Indoor Installations

8

Figure 7. Single Unit Anchor Hole Locations

Figure 8. Multiple Unit Anchor Hole Locations

24.0"

(610 mm)

4X n .75 (19 mm)

SINGLE BOILER

ANCHOR LOCATIONS

FRONT OF

UNIT

31.1"

(790 mm)

4X .85

(22 mm)

2X 1.38

(35 mm)

HEAT EXCHANGER

ANCHOR LOCATIONS

4 PLACES

17.3" (440 mm)

SIDE FORKLIFT

F10578

4X .85"

(22 mm)

2x 1.38

"

(35 mm)

3"

(76 mm)

F10579

4x n .75 (19 mm)

MULTI-BOILER

ANCHOR LOCATIONS

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LQIURQWDWOHDVWPPRQWKHUHDUDQG

mm) above the top of the boiler is required. This will allow

the boiler to be serviced in its installed location without

movement or removal of the boiler.

Service clearances less than the minimum may require

removal of the boiler to service either the heat exchanger

or the burner components. In either case, the boiler must

be installed in a manner that will enable the boiler to be

serviced without removing any structure around the boiler.

3DOOHW-DFN)RUNOLIWLQJ

The XVers L boilers are designed to be moved by pallet

MDFNRUIRUNOLIWIURQWVLGHRUHLWKHUVLGH6HH Figure 5 and

Figure 6.

Figure 5. Pallet Jack

Figure 6. Forklifting

9

TOP VIEW

30" (760 mm) MIN.

SERVICE CLEARANCE

24" (610 mm) MIN.

SERVICE CLEARANCE

0"

F10580

24" (610 mm) MIN.

SERVICE CLEARANCE

FRONT VIEW

F10580

0"

Figure 10. Minimum Clearances from Combustible

Surfaces – Indoor and Outdoor Installations

Outdoor Installation

• •A

CAUTION: DO NOT install XVers L boilers outdoors

in freezing climates.

NOTE: Housekeeping pad of adequate height required

for outdoor units to protect boiler from standing water

and to allow for proper management of condensate.

These units may be installed outdoors when provided with

the factory-supplied and required outdoor trim.

Boilers must not be installed under an overhang unless

clearances are in accordance with local installation codes

and the requirements of the gas supplier.

Three sides must be open in the area under the overhang.

Roof water drainage must be diverted away from boilers

installed under overhangs.

Combustion air is drawn through the louvers in the jacket.

DO NOT remove the cap as shipped from the factory.

F10581

COMBUSTION AIR

THROUGH JACKET

LOUVERS

OUTDOOR CAP

Figure 9. Outdoor Combustion Air

• •A

CAUTION: Do not install where the condensate can

freeze. Take appropriate measures.

Heater Side

Minimum

Clearances from

Combustible

Surfaces

in. (mm)

Minimum Service

Clearance

in. (mm)

Rear  

Front Open 

Left Side  

Right Side  

Top Unobstructed Unobstructed

Vent

Termination

Open Open

Table C. Clearances – Outdoor Installations

NOTE: Vent termination must not terminate less than 3 ft

EHORZHDYHVVRႈWVRURYHUKDQJV

10

U.S. Installations

1

Canadian Installations

2

A

Clearance above grade, veranda, porch, deck, or

balcony

FP FP

B Clearance to window or door that may be opened

PEHORZRUWRVLGHRI

opening

FP

C Clearance to permanently closed window

* *

D

9HUWLFDOFOHDUDQFHWRYHQWLODWHGVRႈWORFDWHGDERYHWKH

WHUPLQDOZLWKLQDKRUL]RQWDOGLVWDQFHRIFPIURP

the centerline of the terminal

P

*

E &OHDUDQFHWRXQYHQWLODWHGVRႈW

* *

F Clearance to outside corner

* *

G Clearance to inside corner P

*

H

Clearance to each side of center line extended above

meter/regulator assembly

*

FPZLWKLQDKHLJKW

above the meter/regulator

assembly

I Clearance to service regulator vent outlet

*

P

J

Clearance to non-mechanical air supply inlet to

building or the combustion air inlet to any other

appliance

PEHORZRUWRVLGHRI

RSHQLQJFPDERYH

opening

FP

K Clearance to mechanical air supply inlet

FPDERYHLIZLWKLQ

PKRUL]RQWDOO\

P

L

Do not terminate above paved sidewalk or paved

driveway

Slip hazard due to frozen

condensate

Slip hazard due to frozen

condensate

M Clearance under veranda, porch, deck or balcony

*

FP

t

1

In accordance with the current ANSI Z223.1/NFPA 54 National Fuel Gas Code.

2

In accordance with the current CAN/CSA-B149 Installation Codes.

t

Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor and top of terminal, and underside

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* Clearances in accordance with local installation codes and the requirements of the gas supplier.

Table D. 9HQW$LU,QOHW7HUPLQDWLRQ&OHDUDQFHV

A

INSIDE

CORNER DETAIL

V = VENT

X = AIR INLET

F10692

V

G

H

A

B

V

B

V

A

J

X

I

M

V

X

K

V

B

F

C

OPERABLE

FIXED

CLOSED

FIXED

CLOSED

OPERABLE

D

L

B

E

V

Figure 11. 0LQLPXP&OHDUDQFHVIURP9HQW$LU,QOHW7HUPLQDWLRQV±,QGRRUDQG2XWGRRU,QVWDOODWLRQV

11

Combustion and Ventilation Air

NOTE:8VHRIWKLVERLOHULQFRQVWUXFWLRQDUHDVZKHUH¿QH

particulate matter, such as concrete or dry-wall dust, is

present may result in damage to the boiler that is not

covered by the warranty. If operated in a construction

environment, a clean source of combustion air must be

provided directly to the boiler.

Inside Air Contamination

All boilers experience some condensation during start-up.

The condensate from flue gas is acidic. Combustion air

can be contaminated by certain vapors in the air which

raise the acidity of the condensate. Higher acidity levels

attack many materials including stainless steel, which is

commonly used in high efficiency systems. The boiler

can be supplied with corrosion-resistant, non-metallic

intake air vent material. You may, however, choose to use

outside combustion air for one or more of these reasons:

1. Installation is in an area containing contaminants

listed below which will induce acidic condensation.

2. You want to reduce infiltration into your building

through openings around windows and doors.

3. You are using AL29-4C stainless steel, PVC,

CPVC or Polypropylene vent pipe, which is more

corrosion-resistant than standard metallic vent pipe.

In extremely contaminated areas, this may also

experience deterioration.

Products causing contaminated combustion air:

• spray cans containing chloro/fluorocarbons

• permanent wave solutions

• chlorinated waxes/cleaners

• chlorine-based swimming pool chemicals

• calcium chloride used for thawing

• sodium chloride used for water softening

• refrigerant leaks

• paint or varnish removers

• hydrochloric acid/muriatic acid

• cements and glues

• antistatic fabric softeners used in clothes dryers

• chloride-type bleaches, detergents, and cleaning

solvents found in household laundry rooms

• adhesives used to fasten building products

• similar products

Areas where contaminated combustion air commonly

exists:

• dry cleaning/laundry areas

• metal fabrication plants

• beauty shops

• refrigeration repair shops

• photo processing plants

• auto body shops

• plastic manufacturing plants

• furniture refinishing areas and establishments

• new building construction

• remodeling areas

• open pit skimmers

Check for areas and products listed above before in-

stalling boiler. If found:

• remove products permanently, OR

• install direct Vent/Truseal option

Indoor Units

This boiler must be supplied with sufficient quantities of

non-contaminated air to support proper combustion and

equipment ventilation. Combustion air can be supplied via

conventional means where combustion air is drawn from

WKHDUHDLPPHGLDWHO\VXUURXQGLQJWKHERLOHUDVVKLSSHG

from factory, combustion air is drawn through louvers in

jacket panels) or via direct vent, where combustion air is

drawn directly from outside. All installations must comply

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&DQDGDDQGDOOORFDOFRGHV

• •A

CAUTION: Combustion air must not be contaminated

by corrosive chemical fumes which can damage the

boiler and cause a non-warrantable failure.

NOTE: It is recommended that the intake vent be

insulated to minimize sweating in freezing climates.

Air Filter

An air filter is supplied standard with the boiler. Models

406L-606L use a 10" x 10" MERV 8 filter while models

726L-856L use a 12" x 12" MERV 8 filter. Remove top

panel and filter access panel to inspect and/or replace the

air filter. See Figure 12.

F10582

INLET AIR FILTER

(PANEL REMOVED

FOR CLARITY)

Figure 12. Air Filter Location

12

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®

Option

Combustion air may be ducted directly to the boiler using

PVC, CPVC, or sealed single-wall galvanized ducting.

The resulting installation meets the requirements for a

direct-vent installation. See venting section for detailed

information.

1. Install combustion air duct to the Air Intake

Connection. See Figure 4 and Figure 10. Remove

and discard the outdoor cap, connect the collar from

the Truseal option kit. Connect ducting material to

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supplied). All ducting shall be self-supporting.

2. In cold climates, and to mitigate potential freeze-

up, Raypak highly recommends the installation of a

motorized sealed damper to prevent the circulation

of cold air through the boiler during non-operating

hours. The optional Motorized Combustion Air

Dampers D-37 meets these needs.

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practical point communicating with the outdoors.

The total cross-sectional area of these openings

shall be at least 1 square inch free air space per

%78+PPðSHUN:RIWRWDOLQSXWUDWLQJ

of all equipment in the room, when the opening is

communicating directly with the outdoors or through

YHUWLFDO GXFWV 7KH WRWDO FURVVVHFWLRQDO DUHD VKDOO

be at least 1 square inch of net free air space per

%78+PPðSHUN:RIWRWDOLQSXWUDWLQJ

of all equipment in the room, when the opening is

communicating with the outdoors through horizontal

GXFWV'DPDJHWRWKHHTXLSPHQWGXHWRLQDGHTXDWH

ventilation of the space is not a warrantable failure.

Motorized Combustion Air Dampers D-37 or

Louvers

When motorized dampers or louvers are used for

combustion air, they must be interlocked with each

appliance in the equipment room, to ensure proper

operation.

See Field Wiring Connection section of this manual for

proper wiring instructions, using Fan/Damper dry contacts

and external interlock.

• •A

WARNING: When unit is installed in the freezing

climates using ducted combustion air, a motorized

damper must be used and must be interlocked with the

boiler per NFGC requirements.

CAUTION: All ducting must be self-supported.

Air Supply

U.S. Installations

All Air from Inside the Building

7KH FRQ¿QHG VSDFH VKDOO EH SURYLGHG ZLWK 7:2

permanent openings communicating directly with an

DGGLWLRQDO URRPV RI VXႈFLHQW YROXPH VR WKDW WKH

combined volume of all spaces meets the criteria for a

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gas utilization equipment installed in the combined space

shall be considered in making this determination. Each

opening shall have a minimum free area of 1 square inch

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UDWLQJ RI DOO JDV XWLOL]DWLRQ HTXLSPHQW LQ WKH FRQ¿QHG

VSDFHEXWQRWOHVVWKDQVTXDUHLQFKHVFPð2QH

RSHQLQJVKDOOFRPPHQFHZLWKLQPPRIWKHWRS

DQG RQH RSHQLQJ VKDOO FRPPHQFH ZLWKLQ   PP

of the bottom of the enclosure. The minimum dimension

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direction.

All Air from Outdoors

7KHFRQ¿QHGVSDFHVKDOOFRPPXQLFDWHZLWKWKHRXWGRRUV

in accordance with one of the methods below. The

minimum dimension of air openings shall not be less than

PPLQDQ\GLUHFWLRQ:KHUHGXFWVDUHXVHGWKH\

shall be of the same cross-sectional area as the net free

area of the openings to which they connect.

1. Two permanent openings, one commencing within

PPRIWKHWRSDQGRQHFRPPHQFLQJZLWKLQ

PPRIWKHERWWRPRIWKHHQFORVXUHVKDOOEH

provided. The openings shall communicate directly,

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attic) that freely communicate with the outdoors.

a. Where directly communicating with the outdoors

or where communicating to the outdoors through

vertical ducts, each opening shall have a

minimum free area of 1 square inch per 4,000

%78+PPðSHUN:RIWRWDOLQSXWUDWLQJRI

all equipment in the enclosure.

b. Where communicating with the outdoors through

horizontal ducts, each opening shall have a

minimum free area of 1 square inch per 2,000

%78+PPðSHUN:RIWRWDOLQSXWUDWLQJRI

all equipment in the enclosure.

2. One permanent opening, commencing within

12" PP RI WKH WRS RI WKH HQFORVXUH VKDOO EH

permitted where the equipment has clearances of

at least 1".4 mm) from the sides and back and

6"  PP IURP WKH IURQW RI WKH DSSOLDQFH 7KH

opening shall directly communicate with the out-

doors or shall communicate through a vertical or

horizontal duct to the outdoors or spaces that freely

communicate with the outdoors, and shall have a

minimum free area of:

13

a. VTXDUHLQFKSHU%78+PPðSHUN:

of the total input rating of all equipment located

in the enclosure, and

b. Not less than the sum of the areas of all vent

connectors in the confined space.

• •A

WARNING: Do not use the “one permanent opening”

method if the equipment room is under negative-

pressure conditions.

Canadian Installations

• •A

CAUTION: All combustion air must be drawn from the

air outside of the building; the mechanical equipment

room must communicate directly with the outdoors.

Ventilation of the space occupied by the boiler shall be

SURYLGHGE\DQRSHQLQJVIRUYHQWLODWLRQDLUDWWKHKLJKHVW

practical point communicating with the outdoors. The total

FURVVVHFWLRQDO DUHD RI VXFK DQ RSHQLQJV VKDOO EH DW

least 10% of the area required below, but in no case shall

the cross-sectional area be less than 10 square inches

FPð

• •A

WARNING: Make sure that the equipment room is not

under negative-pressure conditions.

:KHQ DLU VXSSO\ LV SURYLGHG E\ QDWXUDO DLU ÀRZ IURP

outdoors for a power burner and there is no draft regulator,

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same space, in addition to the opening for ventilation air

required above, there shall be a permanent air supply

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WKDQVTXDUHLQFKIRUHDFK%78+PPðSHUN:

RIWRWDOUDWHGLQSXWRIWKHEXUQHUVDQGWKHORFDWLRQRIWKH

RSHQLQJVVKDOOQRWLQWHUIHUHZLWKWKHLQWHQGHGSXUSRVHRI

WKHRSHQLQJVIRUYHQWLODWLRQDLUUHIHUUHGDERYH

7KLVRSHQLQJVFDQEHGXFWHGWRDSRLQWQRWPRUHWKDQ

PPnor less than 6" PPDERYHWKHÀRRUOHYHO

The duct can also “goose neck” through the roof. The duct

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ÀRRUEXWQRWQHDU SLSLQJ5HIHUWRWKH%,QVWDOODWLRQ

Code for additional information.

Water Piping

General

The boiler should be located so that any water leaks will

not cause damage to the adjacent area or structures.

NOTE: 0LQLPXP SLSH VL]H IRU WKH ERLOHU LQOHWRXWOHW

connections is dependent on the equivalent length of

piping between the load loop and the boiler loop, the

operating conditions and the size of the boiler. See Table

G and Table H.

.QY9CVGT%WVQř

7KLV ERLOHU LV HTXLSSHG ZLWK D /RZ :DWHU &XWRႇ DV D

standard feature. Some state and local codes require this

as part of installation. Please be advised that some areas

UHTXLUHERWKDORZZDWHUFXWRႇDQGDÀRZVZLWFK$ÀRZ

switch is available as the F-1 sales option.

Relief Valve Piping

• •A

WARNING: Pressure relief valve discharge piping

PXVW EH SLSHG QHDU WKH ÀRRU DQG FORVH WR D GUDLQ WR

eliminate the potential of severe burns. Do not pipe

to any area where freezing could occur. Refer to local

codes.

7KH SUHVVXUH UHOLHIYDOYH359 LV VKLSSHG ORRVH LQ WKH

Shipped Loose Items carton inside the crating.

All PRVs are shipped loose to protect them from damage

during shipping/rigging into place.

PRESSURE RELIEF VALVE

TEMPERATURE AND

PRESSURE GAUGE

45 ~

F10583

WATER OUTLET

Figure 13. Recommended PRV Orientation

Temperature and Pressure Gauge

The temperature and pressure gauge is shipped loose.

Hydrostatic Test

Unlike many types of boilers, this boiler does not require

hydrostatic testing prior to being placed in operation. The

heat exchanger has already been factory-tested and is

UDWHGIRUSVLN3DRSHUDWLQJSUHVVXUH+RZHYHU

Raypak does recommend hydrostatic testing of the piping

connections to the boiler and the rest of the system prior

to operation. This is particularly true for hydronic systems

using expensive glycol-based anti-freeze. Raypak

recommends conducting the hydrostatic test before

connecting gas piping or electrical supply. Leaks must be

repaired at once to prevent damage to the boiler. NEVER

use petroleum-based stop-leak compounds.

Isolate boiler water connections from the system prior to

performing a hydrostatic test.

14

)OXVKLQJ&OHDQLQJRI6\VWHP3LSLQJ

Many of the chemicals used to perform this function will

harm the heat exchanger as well as some of the gaskets

and seals within the unit, causing a non-warrantable

failure. When required, Raypak recommends the boiler

be isolated from the system piping prior to flushing or

cleaning, using any cleaning agent.

System Sensor Installation

7KH 6\VWHP 6HQVRU 6 LV UHTXLUHG IRU DOO FDVFDGH RU

SULPDU\VHFRQGDU\SLSLQJFRQ¿JXUDWLRQVXQOHVVWKHXQLWV

¿ULQJUDWH ZLOOEH FRQWUROOHG E\ DQ H[WHUQDO VRXUFH VXFK

as our Temp Tracker MOD+ Hybrid sequencer. Proper

placement and method of installation are critical for proper

operation of the system.

The sensor must be installed in a drywell in conjunction

with heat conductive compound as shown in Figure 14.

The drywell must be installed no more than 5 equivalent

IHHWPRISLSHWXELQJGRZQVWUHDPRIWKHGHFRXSOHU

and installed in such a way that ensures the sensor bulb

LVLQWKHÀRZSDWKRQSULPDU\VHFRQGDU\FRQ¿JXUDWLRQVRU

HTXLYDOHQWIHHWPGRZQVWUHDPRIWKHODVWERLOHULQ

Primary Cascade systems.

• •A

CAUTION: Be careful when installing the drywell not

to over-tighten the well as this can damage the well and

PD\SUHYHQWWKHVHQVRUIURP¿WWLQJSURSHUO\

4 SYSTEM PIPE DIA

NOT TO EXCEED

12 IN. (305 mm)

5 FT. (1.5 M)

MAX

NOT TO SCALE

DRYWELL

SYSTEM

SENSOR

THERMAL PASTE

NPT FITTING

SYSTEM

PIPING

TO BOILER FROM BOILER

F10501

Figure 14. 6\VWHP6HQVRU,QVWDOODWLRQRQ3ULPDU\

Secondary Systems

5 FT. (1.5 M)

MAX.

NOT TO SCALE

F10500

BOILER 1

OUTLET

BOILER 2

OUTLET

COMMON

PIPING

Figure 15. System Sensor Installation on Cascade Primary

Systems

Hydronic Heating

Pump Selection

7KH ERLOHU LV GHVLJQHG IRU XS WR ) & ǻ7 DQG

FRQWLQXRXVUHWXUQWHPSHUDWXUHVIURP)WR)&

to 88°C).

NOTE: +LJKHU UHWXUQ WHPSHUDWXUHV PD\ OLPLW WKH ¿ULQJ

rate when the maximum water temperature of 200°F

(93°C) is approached.

MODEL

Flow Values GPM (lpm)

Max

Flow**

Min

Flow@100%*

Min

Flow*

Min Flow

ZLWKÀRZ

switch

(optional)*

406L 73 11 6 15

506L 73 14 7 15

606L 73 16 8 15

726L 114 19 10 18

856L 114 22 11 18

* Minimum flow based on H

2

O as heating media. Medias other than

H

2

O may require higher minimum flow rates.

** Maximum flow based on 7.5 feet per second velocity.

Table E. Flow Rate Values

NOTE: For systems using glycol, see Table F below for

necessary pumping requirements.

PARAMETER

CORRECTION

Ethylene Glycol Concentration (%)

0 25 30 40 50

Capacity Factor

Multiplier

1.000 0.972 0.960 0.928 0.878

GPM Correction

Multiplier

1.000 1.040 1.055 1.100 1.150

Table F. Glycol Correction Factors

15

Feedwater Regulator

Raypak recommends that a feedwater regulator be in-

VWDOOHGDQGVHWDWSVLN3DPLQLPXPSUHVVXUHDW

the highest point of the system. Install a check valve or

back flow device upstream of the regulator, with a manual

shut-off valve as required by local codes.

Piping

All high points should be vented. This boiler, when used in

connection with a refrigeration system, must be installed

so that the chilled medium is piped in parallel with the boiler

with appropriate valves to prevent the chilled medium from

entering the boiler. The piping system of a hot water boiler

connected to heating coils located in air-handling units

where they may be exposed to circulating refrigerated

DLU PXVW EH HTXLSSHG ZLWK ÀRZFRQWURO YDOYHV RU RWKHU

automatic means to prevent gravity circulation of the boiler

water during the cooling cycle. It is highly recommended

that the piping be insulated.

$LU6HSDUDWLRQ([SDQVLRQ7DQN

All boilers should be equipped with a properly-sized

H[SDQVLRQWDQNDQGDLUVHSDUDWRU¿WWHGDWWKHKLJKHVWSRLQW

in system.

3ULPDU\6HFRQGDU\3LSLQJ

NOTE: All hot water heating systems have unique levels

of operating diversity that must be accounted for in

the system design. The system should always include

DGHTXDWHV\VWHPÀRZLQH[FHVVRIWKHFRQQHFWHGERLOHU

ÀRZ IRU SURSHU RSHUDWLRQ RI WKH SULPDU\VHFRQGDU\

V\VWHP :KHUH WKH V\VWHP ÀRZ PD\ GURS EHORZ WKH

FRQQHFWHGERLOHUÀRZDEXႇHUGHFRXSOHUPD\EHQHHGHG

)DLOXUHWRGHVLJQIRUDGHTXDWHÀRZLHE\SDVVHVZD\

FRQWURO YDOYHV ÀRZOLPLWLQJ EDODQFH GHYLFHV EXႇHU

tanks, etc.) will result in boiler short-cycling and may

reduce boiler life. Always contact your local Raypak

representative for system design assistance to avoid

these issues.

$SSOLFDWLRQVDQG0RGHV3ULPDU\

Secondary Piping

The VERSA IC

®

system is designed for a wide range of

applications. The installer/design engineer should refer

WR WKHIROORZLQJ 0RGHV WR GHWHUPLQH ZKLFK EHVW ¿WV WKH

intended application and functionality for the unit being

installed.

XVers L boilers have three modes available to them to

address the various applications the units can be applied

to. For detailed information on the VERSA IC system, see

WKH 9(56$ ,& PDQXDO  7KLV PDQXDO FDQ EH

found in the document library at www.raypak.com.

Table G. Boiler Rates of Flow for Various System Pipe Sizes

Model

H7

Input Output

Min

Pipe

Size

inches

(mm)

)ǻ7 )ǻ7 )ǻ7 )ǻ7

Min Flow for full

¿UH)ǻ7

Max Flow

0%78+.ZK

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

GPM

/PLQ

ǻ3

ft.hd.

(kPa)

406L

399



392



2



39



3.5



26



2.8



20



2.5



13



2.4



10



2.3



73



6.7



506L

500



489



2



49



4.8



33



3.4



24



2.9



16



2.5



13



2.4



73



6.7



606L

600



585



2



59



4.4



39



3.2



29



2.8



20



2.5



16



2.3



73



6.7



726L

725



705



2 1/2"



71



4.9



47



3.5



35



3



24



2.7



19



2.6



114



8.7



856L

850



826



2 1/2"



83



5.7



55



3.9



41



3.3



28



2.8



22



2.6



114



8.7



Pipe sizing based on not exceeding 7.5 feet per second velocity.

ǻ3 )HHWRI+HDG

16

TO

SYSTEM

FROM

SYSTEM

BOILER

PUMP

FLOW METER

ASSEMBLY

(OPTIONAL)

ISOLATION

VALVE

(TYP)

MAX 5' (1.5m)

TO SYSTEM

SENSOR

4 SYSTEM PIPE

DIAMETERS OR

12" (305 mm) MAX

PRV

(PIPE TO DRAIN)

F10594

Figure 17. +\GURQLF3ULPDU\6HFRQGDU\3LSLQJ

Mode 1

This mode selection is for hydronic heating systems with

VLQJOHRUPXOWLSOHERLOHUVPD[LPXPERLOHUVLQSULPDU\

VHFRQGDU\SLSLQJFRQ¿JXUDWLRQZLWKRUZLWKRXW2XWGRRU$LU

5HVHW6 See Figure 16 and Figure 18.

The system temperature is controlled by the System

6HQVRU67KH%RLOHU3XPS3UXQVGXULQJDQ\FDOOIRU

KHDW7KH6\VWHP3XPS3UXQVZKHQHYHUWKHV\VWHP

is enabled for heating and the outdoor air temperature

LV ORZHU WKDQ WKH ZDUP ZHDWKHU VKXW GRZQ ::6'

WHPSHUDWXUHVHWWLQJLIXWLOL]HG

7KH%RLOHU3XPS3LVGHOD\HG³2ႇ´DVXVHUGH¿QHGLQ

WKH%2,/(5PHQXDQGWKH6\VWHP3XPS3LVGHOD\HG

³2ႇ´LQWKH$'-867PHQX

NOTE:,QFDVFDGHFRQ¿JXUDWLRQWKHV\VWHPSXPSDQG

DHW pump (if applicable) outputs from each cascade

member must be connected in parallel to activate the

system pump and DHW pump during “limp-along”

operation respectively. See VERSA IC Manual (5000.72)

for detailed information.

Maximum distance not to exceed

4 system pipe diameters

or 12" (305 mm)

1

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

S1

S2

P2

S4

P1

VERSA

PIM

MODBUS

ENABLE

0-10/4-20mA

S3

1

Figure 16. 0RGH6LQJOH%RLOHUZLWK3ULPDU\6HFRQGDU\3LSLQJ

17

Figure 18. 0RGH5HFRPPHQGHG%RLOHU&DVFDGHZLWK3ULPDU\6HFRQGDU\3LSLQJ

Maximum distance not to exceed

4 system pipe diameters or 12" (305 mm)

1

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

S1a

S2a

P2a

S3a

S1b

S2b

S1c

S2c

S1d

S2d

A

B C D

S4a

(MASTER)

PIM

VERSA

PIM

VERSA

PIM

VERSA

PIM

VERSA

P1a

MODBUS

0-10/4-20mA

ENABLE

P1b P1c

P1d

CONNECT SYSTEM PUMP

CASCADE FOLLOWER

IN PARALLEL FROM EACH

OUTPUT

1

Mode 2

This mode selection is for hydronic heating systems with

VLQJOHRUPXOWLSOHERLOHUVPD[LPXPERLOHUVLQSULPDU\

VHFRQGDU\SLSLQJFRQ¿JXUDWLRQZLWKRUZLWKRXW2XWGRRU$LU

5HVHW6ZLWKLQGLUHFW'+:RQWKHV\VWHPORRSZLWKRU

without priority). The system temperature is controlled by

WKH6\VWHP6HQVRU67KH,QGLUHFW'+:6HQVRU6

determines the indirect call/tank setpoint. See Figure 19

and Figure 20.

The system temperature is boosted to Target Max when

XVLQJWKH,QGLUHFW'+:6HQVRU6GXULQJDQLQGLUHFWFDOO

IRUKHDW3ULRULW\PRGHWRJJOHVRႇWKH6\VWHP3XPS3

when an indirect call for heat is present. The Boiler Pump

3UXQVGXULQJDQ\FDOOIRUKHDW7KH,QGLUHFW'+:3XPS

3UXQVGXULQJDQLQGLUHFWFDOOIRUKHDWZLWKQR³2ႇ´GHOD\

7KH %RLOHU 3XPS 3 LV GHOD\HG ³2ႇ´ as user-defined

LQ WKH %2,/(5 PHQX DQG WKH 6\VWHP 3XPS 3 LV

delayed ³2ႇ´ in the ADJUST menu. The System Pump

3 UXQV ZKHQHYHU WKH V\VWHP LV HQDEOHG IRU KHDWLQJ

and the outdoor air temperature is lower than the WWSD

WHPSHUDWXUHVHWWLQJLIXWLOL]HGXQOHVVDQLQGLUHFWFDOOIRU

heat is present with priority.

NOTE: See VERSA IC Manual (5000.72) for more

information on cascade systems.

Figure 19. 0RGH6LQJOH%RLOHUZLWK,QGLUHFWRQ6\VWHP/RRS3ULPDU\6HFRQGDU\3LSLQJ

S1

S2

P2

S4

P1

VERSA

PIM

MODBUS

ENABLE

0-10/4-20mA

S3

1

P3

S5

AQUASTAT

LOCATED IN

OUTLET PIPE

Maximum distance not to exceed

4 system pipe diameters

or 12" (305 mm)

1

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

18

Mode 3

This mode selection is for hydronic heating systems

ZLWK VLQJOH RU PXOWLSOH ERLOHUV PD[LPXP  ERLOHUV LQ

SULPDU\VHFRQGDU\ SLSLQJ FRQ¿JXUDWLRQ ZLWK RU ZLWKRXW

2XWGRRU$LU 5HVHW 6 ZLWK LQGLUHFW '+: RQ WKH ERLOHU

ORRS ZLWK SULRULW\ 6HH Figure 21 and Figure 22.The

system temperature is controlled by the Supply Sensor

6ZKHQHYHUWKHLQGLUHFWFDOOIRUKHDWLVnot active. The

'+:6XSSO\6HQVRU6GHWHUPLQHVWKHLQGLUHFWFDOOWDQN

VHWSRLQW 'XULQJ DQ LQGLUHFW FDOO IRU KHDW WKH ERLOHU ¿ULQJ

rate is determined by the water temperature at the Indirect

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3UXQVGXULQJDOO KHDWFDOOV UHJDUGOHVVRI SULRULW\7KH

,QGLUHFW'+:3XPS 3 UXQV GXULQJ DQLQGLUHFW FDOO IRU

KHDWZLWKQR³2ႇ´GHOD\

Figure 20. 0RGH+HDWHU&DVFDGHZLWK,QGLUHFWRQ6\VWHP/RRS3ULPDU\6HFRQGDU\3LSLQJ

7KH %RLOHU,QMHFWLRQ3XPS3LVGHOD\HG³2ႇ´ DVXVHU

GH¿QHGLQWKH%2,/(5PHQXDQGWKH6\VWHP3XPS3

LVGHOD\HG³2ႇ´LQWKH$'-867PHQX

7KH 6\VWHP 3XPS 3 UXQV ZKHQHYHU WKH V\VWHP LV

enabled for heating and the outdoor air temperature

LV ORZHU WKDQ WKH ZDUP ZHDWKHU VKXW GRZQ ::6'

WHPSHUDWXUHVHWWLQJLIXWLOL]HGXQOHVVDQLQGLUHFWFDOOIRU

heat is present.

NOTE: A Tank Aquastat can be used in lieu of the Indirect

DHW Sensor (S5). See VERSA IC Manual (5000.72) for

additional details.

NOTE: See VERSA IC Manual (5000.72) for more

information on cascade systems.

S1 S2

P2

S4

P1

VERSA

PIM

MODBUS

ENABLE

0-10/4-20mA

S3

1

P3

S5

AQUASTAT

LOCATED IN

OUTLET PIPE

S6

Maximum distance not to exceed

4 system pipe diameters or 12" (305 mm)

1

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

S1a

S2a

P2a

S3a

S1b

S2b

S1c

S2c

S1d

S2d

A

B C D

S4a

(MASTER)

PIM

VERSA

PIM

VERSA

PIM

VERSA

PIM

VERSA

V1a

MODBUS

0-10 VDC

ENABLE

M

V1b

M

V1c

M

V1d

M

CONNECT SYSTEM PUMP

CASCADE FOLLOWER

IN PARALLEL FROM EACH

OUTPUT

P3

S5

AQUASTAT

LOCATED IN

OUTLET PIPE

= FACTORY INSTALLED SENSOR

= FIELD INSTALLED SENSOR

Maximum distance not to exceed

4 system pipe diameters or 12" (305 mm)

1

F10628

Figure 21. 0RGH6LQJOH%RLOHUZLWK,QGLUHFWRQ%RLOHU/RRS3ULPDU\6HFRQGDU\3LSLQJ

19

S1a

S2a

P2a

S3a

S1b

S2b

P1b

S1c

S2c

P1c

S1d

S2d

P1d

A

B C D

S4a

= FACTORY INSTALLED SENSOR

= FIELD INSTALLED SENSOR

(MASTER)

PIM

VERSA

PIM

VERSA

PIM

VERSA

PIM

VERSA

P1a

S5a

P3a

S6a

MODBUS

0-10/4-20mA

ENABLE

1

AQUASTAT

LOCATED IN

OUTLET PIPE

CONNECT SYSTEM

PUMP IN PARALLEL

FROM EACH CASCADE

FOLLOWER OUTPUT

1

Maximum distance not to exceed

4 system pipe diameters or 12" (305 mm)

1

F10629

Figure 22. 0RGH+HDWHU&DVFDGHZLWK,QGLUHFWRQ+HDWHU/RRS3ULPDU\6HFRQGDU\3LSLQJ

Applications and Modes - Primary Piping

The VERSA IC system is designed for a wide range of

applications. The installer/design engineer should refer

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intended application and functionality for the unit being

installed. XVers L boilers have two operational modes

available to them to address the various applications the

XQLWVFDQEHDSSOLHGLQ3ULPDU\3LSLQJFRQ¿JXUDWLRQV

NOTE: Ensure PIM DIP#3 = OFF when isolation valves

used on Primary Systems.

PRV

(PIPE TO DRAIN)

TO SYSTEM

ISOLATION VALVE

(TYP)

FROM SYSTEM

FLOW METER

ASSEMBLY

(OPTIONAL)

F10595

Figure 23. Hydronic Primary Piping

Mode 1

This mode selection is for hydronic heating systems with

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See Figure 24 and Figure 25.

For Single Boiler systems under primary piping

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the XVers L will use it for the system temperature. The

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9DOYH9

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6\VWHP3XPS3UXQVZKHQHYHUWKHV\VWHPLVHQDEOHG

for heating and the outdoor air temperature is lower than

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LIXWLOL]HG

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NOTE: ,Q FDVFDGH FRQ¿JXUDWLRQWKHV\VWHP SXPS DQG

DHW pump (if applicable) outputs from each cascade

member must be connected in parallel to activate the

system pump and DHW pump during “limp-along”

operation respectively. See VERSA IC Manual (5000.72)

for detailed information.

20

NOTE: XVers L boilers are equipped with a “pilot duty”

dry contact to enable the system pump (P2a). In a

FDVFDGHFRQ¿JXUDWLRQLWLVUHFRPPHQGHGWKDWDOOV\VWHP

pump outputs from each unit are connected in parallel to

ensure proper operation of the system pump whenever

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HOHFWULFDO FRQ¿JXUDWLRQV DUH VXJJHVWHG ZKHQ LW LV QRW

possible to synchronize the system pump operation

with the boilers operation.

S1a

S2a

P2a

S3a

S1b

S2b

S1c

S2c

S1d

S2d

A

B C D

S4a

(MASTER)

PIM

VERSA

PIM

VERSA

PIM

VERSA

PIM

VERSA

V1a

MODBUS

0-10 VDC

ENABLE

M

V1b

M

V1c

M

V1d

M

CONNECT SYSTEM PUMP

CASCADE FOLLOWER

IN PARALLEL FROM EACH

OUTPUT

F10507

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

S1

S2

P2

S4

V1 Motorized isolation valve is optional

for single boiler systems

V1

VERSA PIM

MODBUS

ENABLE

0-10/4-20mA

M

FACTORY INSTALLED SENSOR

FIELD INSTALLED SENSOR

Figure 24. Mode 1 - Single Boiler with Primary Piping

Figure 25. Mode 1 - Recommended Boiler Cascade with Primary Piping

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Raypak XVers L 406L-856L Type H Mode d'emploi

Raypak XVers L 406L-856L Type H Mode d'emploi

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