Laars LT199NRX1 Guide rapide

Document 7041

Base Rack : ST1249 Extension Rack : ST1250

Installation and Instruction Manual

Cascade Rack

System

Model LT199NXX1 / LT199PXX1

LT199NRX1 / LT199PRX1

RTGS199N1 / RTGS199X1

RTGR199N1 / RTGR199X1

Base Rack : ST1249

Extension Rack : ST1250

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualied in hot water boiler and heater installation and maintenance. Improper installation and/or

operation could create carbon monoxide gas in ue gases which could cause serious injury, property

damage, or death. Improper installation and/or operation will void the warranty.

Installation and Instruction Manual Cascade Rack System S633100214 Rev 01/23

This installation shall be done by a qualied service agency in accordance with these instructions, the installation manual included with

the appliance to be mounted on this rack, all applicable codes, and requirements of the authority having jurisdiction. Failure to follow

these instructions could result in substantial property damage, severe personal injury, or death.

STOP! Follow these instructions or warranty will be void!

■Installation Must Comply With:

1. This appliance must be installed in accordance with local codes if any; if not, follow ANSI Z223.1/NFPA 54 or

CAN/CSA B149.1, Natural Gas and Propane Installation Code, as applicable.

2. Local, state, provincial, and national codes, laws, regulations,and ordinances. This installation shall be done by a

qualied service agency in accordance with these instructions, the installation manual included with the appliance

to be mounted on this rack, all applicable codes, and requirements of the authority having jurisdiction. Failure to

follow these instructions could result in substantial property damage, severe personal injury, or death.

Included with Kit:

WARNING

No Description

Quantity

Main

Rack

Extension

Rack

1Base Foot 2 1

2Base Support 4 2

3Angle Support 4 2

4Vertical Post 2 1

5 Lower Beam 1 1

6Upper Beam 1 1

7 End Cap 2 1

8 M10 Washer 44 24

9 M10 Hex Screw 22 12

10 M10 Hex Nut 22 12

11 M6 Self Tapping Screw 8 8

12 M6 Hex Screw 4 3

13 M6 Hex Nut 4 3

14 M6 Washer 8 6

Figure B

Figure A

Figure C

Figure A Figure B Figure C

NOTICE

Remove all items from the packaging and ensure that all parts

and accessories are included in the kit. Any claims for damage

or shortage in shipment must be led immediately against the

transportation company by the consignee.

■Tools Required (Not Included):

7mm and 10mm Ratchet, Socket Driver, or Wrench

Phillips Head Screwdriver Rubber Mallet Appropriate

Drill with Assorted Bits M10 or 7/16” Lag or Anchor

Bolts and Washers for Anchoring Rack into Wood or

Concrete

■Preparing for Installation:

Determine the best area to install the rack

system. Ensure the location meets building code

requirements, and that all safety and clearance

requirements for the appliance(s) to be mounted to

the rack are met.

■ Installing the Rack System:

1. Move the rack components to the installation

location. Ensure you have all the components for the

installation. NOTE: DO NOT lose these components.

Replacements ARE NOT included in this kit.

2. Set the base feet in the installation location. Verify

finished installation clearances will meet the service

clearance requirements of the appliance(s) to be

mounted on the rack.

3. Use a Phillips Head Screwdriver and eight(8) M6

Self Tapping Screws to install the four(4) Angle

Supports to the two(2) Base Feet. See Figure 1(a).

NOTE: DO NOT fully tighten the screws. Doing so

Installer - Read all instructions in this manual before

installing. Perform steps in the given order. Obey all local

codes. Obtain all applicable permits before installing this rack

system.

NOTE: Install all components in such a manner that does not

reduce the performance of any re rated assembly.

User - These instructions are for use only by a qualied

heating installer / service technician.

FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE

CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE,

SEVERE PERSONAL INJURY, OR DEATH.

WARNING

This rack system must be properly anchored and secured to

the oor BEFORE mounting appliances on it. Failure to follow

these instructions could result in substantial property damage,

severe personal injury, or death.

WARNING

Carefully consider installation when determining rack location.

Please read the entire appliance installation manual before

installing this rack. Failure to properly take factors such as

appliance venting, piping, condensate removal, and wiring into

account before installation could result in wasted time, money,

and possible property damage and personal injury.

Do not attempt to overtighten any of the bolts as this may

damage the threads and prevent the bolts from turning.

Replacement bolts are not included in this kit.

CAUTION

will make it difficult

to install the vertical

posts and waste

time.

4. Use a Phillips Head Screwdriver and four(4) M6

Self Tapping Screws, two(2)M10 Hex Bolt, two(2)

M10 Hex Nut, four(4)

M10 Washer to

install the two(2)

Vertical Posts to

the Base Feet. See

Figure 1(b). Tighten

all of the installed

M6 Self Tapping

Screws, M10 Hex Bolt, Nut . Be careful not to strip

the screws.

5. Use a 17mm Ratchet/Socket Driver, wrench, and

the twelve(12) M10 Hex Bolts with included M10

Washers and M10 Hex Nuts to mount two(2)

Base Supports to

each Base Foot

and Vertical Post

assembly. See

Figure 2. NOTE:

Ensure a M10

Washer is installed

between the M10

Hex Bolts and support and between the M10 Hex

Nut and support. It is considered best practice to

install the M10 Hex Bolts from the outside in, with

the M10 Hex Nuts on the interior of the rack.

6. Use a 17mm Ratchet or Socket Driver and wrench

and the four(4) M10 Hex Bolts with included M10

Figure 2 - Intalled Base Support

Figure 1(a) - Intalled Angle Support

Figure 1(b) - Intalled Angle Support

NOT fully tighten the screws. Doing so will make it

difficult to install the vertical posts and waste time.

4. Use a Phillips Head Screwdriver and (4) M6 Self

Tapping Screws to install the two(2) Vertical Posts to

the Base Feet. See Figure 1. Tighten all twelve(12) of

the installed M6 Self Tapping Screws. Be careful not

to strip the screws.

5. Use a 17mm Ratchet/Socket Driver, wrench, and

the twelve(12) M10 Hex Bolts with included M10

Washers and M10 Hex Nuts to mount two(2) Base

Supports to each Base Foot and Vertical Post

assembly. See Figure 2. NOTE: Ensure a washer is

installed between the bolt and support and between

the nut and support. It is considered best practice to

install the bolts from the outside in, with the nuts on

the interior of the rack.

6. Remove the two(2) M10 Hex Nuts and M10 Washers

attaching the Upper Beam to the installed rack.

Then use a 17mm Ratchet or Socket Driver and

wrench and the those two(2) M10 Hex Nuts and M10

Washers and two(2) M10 Hex Bolts with included

washers and nuts from the Extension Rack kit to

mount the beam marked “UPPER” to the Extension

Rack and installed rack base and post assembly.

7. Remove the two(2) M10 Hex Nuts and M10 Washers

attaching the Lower Beam to the installed rack.

Remove the label that corresponds to the appliance

that will be mounted from the Extension Rack post

assembly. Then use a 17mm Ratchet or Socket

Driver and wrench and the two(2) removed M10 Hex

Nuts and M10 Washers and two(2) M10 Hex Bolts

with included M10 Washers and M10 Nuts from

the Extension Rack kit to mount the beam marked

“LOWER” to the Extension Rack and installed rack

base and post assembly. NOTE: Ensure the lower

beam is mounted in the proper location for the

appliance to be installed to the rack. Failure to do so

will result in wasted time.

8. Use a rubber mallet to

install the end cap on the

vertical post. See Figure

5. If installing a single

Extension Rack, rack

installation is complete.

See Figure 6. Ensure all

nuts and bolts and screws

are tightened.

9. Repeat the steps included

in this Installing an

Extension Rack section

for each additional

Extension Rack. Figure 6 - Installed Main Rack

and Extension Rack

■ Installing an Extension Rack :

1. Move the rack components to the installation

location. Ensure you have all the components for the

installation. NOTE: DO NOT lose these components.

Replacements ARE NOT included in this kit.

2. Set the Base Feet in the installation location. Verify

finished installation clearances will meet the service

clearance requirements of the appliance(s) to be

mounted on the rack.

3. Use a Phillips Head Screwdriver and eight(8) M6 Self

Tapping Screws to install the four(4) Angle Supports

to the two(2) Base Feet. See Figure 1. NOTE: DO

Washers and M10 Hex Nuts to mount the beam

marked “UPPER” to each Base and Post assembly.

See Figure 4. NOTE: If installing an Extension

Rack, install the bolts on the exterior vertical post

from inside the post out, and do not tighten down

the bolts. Tighten the nuts by hand to keep the post

stable. See Figure 3.

7. Observe the posts. Labels marked “ALL TANKLESS

WATER HEATERS”, “80 – 140kBTU APPLIANCES”,

and “175 – 199kBTU APPLIANCES” cover the

upper lower beam mounting holes. Remove the

label that corresponds to the appliance that will

be mounted. Then use a 17mm Ratchet or Socket

Driver and wrench and the four(4) M10 Hex Bolts

with included M10 Washers and M10 Hex Nuts to

mount the beam marked “LOWER” to each base

and post assembly. NOTE: Ensure the lower beam

is mounted in the proper location for the appliance

to be installed to the rack. Failure to do so will result

in wasted time. NOTE: If installing an Extension

Rack, install the bolts on the exterior vertical post

from inside the post out, and do not tighten down

the bolts. Tighten the nuts by hand to keep the post

stable. See Figure 3.

8. Use a rubber mallet to install

the two(2) End Caps on the

Vertical Posts. See Figure 5.

9. If installing a single Main

Rack, rack installation is

complete. Ensure all nuts

and bolts and screws are

tightened.

Figure 5 - Installed End Cap

Figure 3 - Open Ended Bolt Figure 4 - Installed Upper Beam

■ General Rules for Drilling in Concrete :

Concrete drillers must comply with OSHA’s general

rules. Operators must be adequately trained to use

concrete drilling equipment, and the drilling equipment

must be maintained in safe operating condition.

Operators must wear personal protective equipment

(PPE), including goggles, long pants, protective noise

equipment, and steel-toed work boots. Operators

should wear a respirator whenever exposed to

hazardous materials. Adequate ventilation is required

whenever drilling in concrete.

When locating the rack and preparing to install concrete anchors,

IT IS MANDATORY to check for buried electrical cables, gas

tubing, and water or radiant heating piping. DO NOT drill into

or drive fasteners into concrete slab unless absolutely certain

it is safe to do so. If in doubt, CONSULT A PROFESSIONAL to

determine and accurately locate buried objects. Failure to follow

this warning could result in property damage, serious personal

injury, or death.

WARNING

■General Notes on Securing the Rack to a

Concrete Floor :

This rack system must be properly anchored and secured to

the oor BEFORE mounting appliances on it. Failure to follow

these instructions could result in substantial property damage,

severe personal injury, or death.

WARNING

If seismic anchoring is required, consult state and local codes

for requirements and instructions. If in doubt as to whether

seismic anchoring is necessary in your installation location,

CONSULT A PROFESSIONAL. Failure to follow this warning

could result in property damage, serious personal injury, or

death.

WARNING

■ Installing Appliance(s) on the Rack: :

1. a. If mounting one(1) appliance to the rack, use a

10mm Ratchet or Socket Driver and wrench and

two(2) M6 bolts and included washers and nuts to

mount the top mounting bracket to the upper beam

of the rack. See Figure 7.

1. b. If mounting two(2) appliances to the rack, use a

10mm Ratchet or Socket Driver and wrench and

two(2) M6 bolts and included washers and nuts to

mount two(2) top mounting brackets to the upper

beam of the rack. See Figure 8.

2. Hang the appliance(s) from the top mounting

bracket(s). See Figure 7.

3. Use a 10mm Ratchet/Socket Driver and wrench to

secure the lower mounting bracket(s) to the lower

beam, using the two(2) M6 bolts and the included

washers/nuts. See Figures 9 and 10.

Figure 7 - Single Appliance Mounted on Top Mounting Bracket

Figure 8 - Secured Top Mounting Bracket for Back to Back

Appliance Mounting

■ General Anchoring Instructions :

1. Position the stand in the installation location.

2. Once properly positioned, use a pencil to mark the

drill holes for the lag screws / expansion anchors.

Then move away the stand.

3. Prepare to drill holes into the mounting surface

(either 4” thick minimum Wood Structural Member,

or 4” thick minimum Concrete Flooring). Consult lag

screw or expansion anchor manufacturer for predrill

diameters.

4. After taking appropriate precautions, drill the four

anchor holes.

5. Reposition the stand with attached seismic anchors

over the newly drilled anchor holes.

6. Install the washers and lag screws or expansion

anchors (depending on the installation and code

requirements).

■ Utility Precautions

OSHA rules state that concrete drillers should make

certain they are not drilling into electrical cables. They

should use the services of the underground utility and

cable locating companies prior to drilling. Concrete

drillers should maintain a minimum distance of 10 feet

from high voltage power cables.to install the vertical

posts and waste time.

Figure 12 - Mounted Back to Back Appliances

Figure 13 - Mounted Side by Side Appliances (Possible with

Extension Rack)

41.3" 25.9"

65.0"

67.7"

48.8"

15.3"

Figure 14 - Rack Dimensions

45.8"

22.9"

Figure 10 - Secured Lower Bracket for Back to Back Appliance

Mounting

Figure 11 - Mounted Single Appliance

Figure 9 - Single Appliance Secured Lower Bracket

4. See Figures 11, 12, 13 for mounted appliance

images.

5. Repeat the previous steps for installing additional

appliances on Extension Rack(s).

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