NTI – MATRIX
INSTALLATION AND OPERATING INSTRUCTIONS
VERSION DATE: 9-15-10
TABLE OF CONTENTS
1.0 SPECIFICATIONS............................................................................................................................................ 3
2.0 INSTALLATION REQUIREMENTS.................................................................................................................4
3.0 VENTING.......................................................................................................................................................... 6
4.0 CONDENSATE DRAIN.................................................................................................................................. 13
5.0 INSTALLING GAS PIPING............................................................................................................................ 14
6.0 BOILER PLUMBING...................................................................................................................................... 16
7.0 DOMESTIC HOT WATER SYSTEM.............................................................................................................. 24
8.0 WIRING .......................................................................................................................................................... 28
9.0 CONTROL SETUP......................................................................................................................................... 33
10.0 MATRIX BLOWER OPERATION ................................................................................................................ 37
11.0 HEAT RECOVERY VENTILATION.............................................................................................................. 39
12.0 LIGHTING BOILER...................................................................................................................................... 44
13.0 TROUBLE SHOOTING................................................................................................................................ 46
14.0 SEQUENCE OF OPERATION..................................................................................................................... 50
15.0 INSTALLATION CHECKLIST...................................................................................................................... 51
16.0 ANNUAL MAINTENANCE AND INSPECTION........................................................................................... 52
17.0 PARTS LIST................................................................................................................................................. 55
HAZARD SYMBOL DEFINITIONS
Danger Sign: Indicates a hazardous situation which, if not avoided, will result
in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided, could
result in serious injury or death.
Caution Sign plus Safety Alert Symbol: Indicates a hazardous situation which,
if not avoided, could result in minor or moderate injury.
Caution Sign without Safety Alert Symbol: Indicates a hazardous situation
which, it not avoided, could result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided could result
in property damage.
®
US Models
Matrix Installation and Operation Instructions
0.0 INTRODUCTION
General Installation Requirements
This document pertains to the correct installation and operation of NTI Matrix appliance, models numbers M100 and M100V. The
instructions detailed in this document supersede any and all previous instructions provided by NTI, written or otherwise. Each unit
is provided with the following:
1) Installation and Operation Instructions,
2) Matrix Users Manual, and
3) Natural to LP Conversion Kit *
* The conversion kit is required to convert the appliance so it will safely operate with Propane Gas.
Read and understand this entire document prior to proceeding with the installation of the Matrix. Failure
to follow the instructions outlined in this document will result in property damage, serious injury or
death.
User Responsibilities
This appliance must be installed and serviced by a qualified installer or service technician. This appliance must be serviced and
inspected annually when operating in normal residential applications. Demanding applications or extreme conditions (i.e.
commercial) may require more frequent service and inspection. As the User/Owner of this equipment, you are responsible for
ensuring the maintenance is performed at the required intervals. It is also the Users responsibility to ensure Vent and CombustionAir Intake termination is kept clear of ice and snow or any other obstruction. Failure to follow these instructions could result in
fire, serious injury, or death.
Failure to have the appliance properly serviced and inspected on a regular basis may result in property
damage, serious injury or death.
Failure to keep the Vent and Combustion Air Intake clear of ice, snow, and other debris may result in
property damage, serious injury, or death.
Installer Responsibilities
As the installing technician it is your responsibility to ensure the installation is performed in accordance with this instruction
manual as well as any applicable local or National installation codes. It is also your responsibility to inform the User/Owner of
their obligation with respect to the above description under “User Responsibilities”. Failure to follow this warning could result in
fire, serious injury, or death.
ATTENTION: LIQUEFIED PETROLEUM (LP) PROPANE
The Matrix is factory set to operate with Natural Gas. BEFORE OPERATING WITH PROPANE, the specified LP
Conversion Kit must be installed to convert the appliance so it will operate safely with LP Propane.
Liquefied Petroleum (LP) propane gas is heavier than air; therefore, it is imperative that your Matrix unit is not
installed in a pit or similar location that will permit heavier than air gas to collect. Local Codes may require appliances
fueled with LP gas be provided with an approved means of removing unburned gases from the room. Check your local
codes for this requirement.
Natural to LP Propane Conversion Kit_
NTI Series Model Number Kit Number
Matrix M100, M100V 82650-1
Failure to use the appropriate Natural to LP Conversion Kit when operating the Trinity Lx with Propane
will result in extremely dangerous burner operation leading to property damage, serious injury or death.
Refer to section titled ATTENTION: LIQUEFIED PETROLEUM (LP) PROPANE
models and corresponding conversion kit numbers.
Appliance Vent / Air-Intake Piping
The Matrix is a “Direct Vent” appliance requiring a “Special Venting System”. Vent and CombustionAir Intake piping must be piped to the outdoors, using the vent material and rules outlined in these
instructions. Failure to follow instructions will result in serious injury or death.
for appliance
2
Matrix Installation and Operation Instructions
1.0 SPECIFICATIONS
Table 1.1 General Specifications
1,2
DOE
Heating
Capacity
1,3
(MBH)
Model
M100 25-150 136 118 95.1 22.5x18.5 18x18 400-1200 400-1600 - 53-28-38 3”
M100V 25-150 136 118 95.1 22.5x18.5 18x18 400-1200 400-1600 70-150 53-28-38 3”
Notes:
1 – Listed Input and Output ratings are at minimum vent lengths at Sea Level. Numbers will be lower with longer venting and/or altitudes greater then
2000 feet.
2 – The maximum output when operating on LP-Gas is limited to 145MBH.
3 – Based on rating plate input capacities, using standard test procedures prescribed by the U.S. Department of Energy. Ratings have been
confirmed by AHRI (GAMA).
4 – Matrix units require a special venting system, use only vent materials and methods detailed in these instructions.
CSA
Input
(MBH)
Net
I=B=R
Rating
(MBH)
1,3
DOE
AFUE
3
(%)
Supply
Plenum
(inches)
Return
Plenum
(inches)
Airflow
Heating
(CFM)
Airflow
Cooling
(CFM)
Ventilation
(CFM)
Dimensions
H-W-D
(inches)
Vent/Air
Size4
1.1 High Altitude Operation
The Matrix is designed to operate to capacity
Figure 1.1 Maximum Capacity vs. Altitude
160
in installations at 2000 feet of elevation or
less. As elevations higher than 2000 feet
have less dense air, the unit is not capable of
150
providing its specified capacity. (See Chart).
In Canada:
De-rate by 5% for altitudes between 2000
and 4500 feet. For altitudes above 4500 feet
140
130
Input (Mbh)
consult with local authorities.
In USA:
De-rate by 4% for every 1000 feet over 2000
feet.
120
110
0-2000 3000 4000 5000 6000 7000 8000 9000 10000
Elevation (ft)
CAUTION
AT ELEVATIONS GREATER THAN 2000 FEET, THE COMBUSTION OF THE MATRIX MUST BE CHECKED
WITH A CALIBRATED COMBUSTION TESTER TO ENSURE SAFE AND RELIABLE OPERATION. CONSULT
SECTION 5.20 FOR INSTRUCTIONS ON ADJUSTING THE INPUT TO PROVIDE PROPER OPERATION.
IT IS THE INSTALLERS RESPONSIBILITY TO CHECK THE COMBUSTION, AND
TO ADJUST THE COMBUSTION IN ACCORDANCE TO SECTION 5.20
3
Matrix Installation and Operation Instructions
2.0 INSTALLATION REQUIREMENTS
The installation of your NY Thermal Matrix gas furnace/boiler must conform to the requirements of your local authority, and the
National Fuel Gas Code ANSI Z223.1 and or CAN/CGA B149 Installation Codes. Where required by the Authority, the installation
must conform to the standard for “Controls and Safety Devices for Automatically Fired Boilers ANSI/ASME CSD-1.
IMPORTANT
Carbon Monoxide Detectors
Many jurisdictions require the installation of carbon monoxide detectors in buildings where a sidewall
vented fuel-burning appliance is installed. Installers must abide by local code requirements regarding the
installation of CO detectors. The use of a certified carbon monoxide detector is recommended but not
required by NTI.
IMPORTANT
“IN THE STATE of MASSACHUSETTS ONLY”
(a)For all horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part
for residential purposes, including those owned and operated by the Commonwealth and where the side wall exhaust vent
termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and
porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS.
vented gas fueled equipment, the installing plumber or gas fitter shall observe that a hard wired carbon monoxide
detector with an alarm and battery back-up is installed on the floor level where the gas equipment is to be installed and
on each additional level of the dwelling, building or structure served by the equipment. It shall be the responsibility of
the property owner to secure the services of qualified licensed professionals for the installation of hard wired carbon
monoxide detectors.
a. In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or an
attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on the next
adjacent floor level.
b. In the event that the requirements of this subdivision can not be met at the time of completion of installation,
the owner shall have a period of 30 days to comply with the above requirements; provided, however, that
during said 30 day period a battery operated carbon monoxide detector with an alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with
the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a
minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented
gas fueled heating appliance or equipment. The sign shall read, in print size no less than one-half (1/2) inch in size,
“GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”. (A plate is included with the
boiler)
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not
approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage
installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.
(b)EXEMPTIONS: The following equipment is exempt from 248 CMR 5.08(2)(a)1 through 4:
1. The equipment listed in Chapter 10 entitled “Equipment Not Required To Be Vented” in the most current edition of
NFPA 54 as adopted by the Board; and
2. Product Approved side wall horizontally vented gas fueled equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for residential purposes.
At the time of installation of the side wall horizontal
…..Next Page
4
Matrix Installation and Operation Instructions
….Continued.
(c)MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING SYSTEM PROVIDED. When the manufacturer
of Product Approved side wall horizontally vented gas equipment provides a venting system design or venting system
components with the equipment, the instructions provided by the manufacturer for installation of the equipment and the venting
system shall include:
1. Detailed instructions for the installation of the venting system design or the venting system components; and
2. A complete parts list for the venting system design or venting system.
(d)MANUFACTURER REQUIREMENTS – GAS EQUIPMENT VENTING SYSTEM NOT PROVIDED. When the
manufacturer of a Product Approved side wall horizontally vented gas fueled equipment does not provide the parts for venting
the flue gases, but identifies “special venting systems”, the following requirements shall be satisfied by the manufacturer:
1. The referenced “special venting system” instructions shall be included with the appliance or equipment installation
instructions; and
2. The “special venting systems” shall be Product Approved by the Board, and the instructions for that system shall
include a parts list and detailed installation instructions.
(e)A copy of all installation instructions for all Product Approved side wall horizontally vented gas fueled equipment, all
venting instructions, all parts lists for venting instructions, and/or all venting design instructions shall remain with the appliance
or equipment at the completion of the installation.
ATTENTION
The Matrix is set to operate with Natural Gas; LP Conversion Kit Part No. 82650-1 is included with each furna ce and
must be installed before operating with Propane.
Liquefied Petroleum (LP) propane gas is heavier than air; it is imperative that your boiler is not installed in a pit or
similar location that will permit heavier than air gas to collect. Local Codes may require appliances fueled with LP gas
be provided with an approved means, of removing unburned gases from the room.
Check your local codes for this requirement.
2.1 Location
In all cases, the Matrix must be installed indoors, in a dry location, such that the gas components are protected from dripping or
spraying water or rain, during operation and servicing. The boiler location ambient temperature is maintained to a minimum of
50°F.
Determine the best location of the vent termination, and if possible locate the appliance as close to the termination point as possible.
Ensure that the desired appliance location is not subjected to flooding or high moisture levels, for damage to the appliance will
occur, voiding your NY THERMAL warranty.
LIQUIFIED PETROLEUM (LP) PROPANE
IMPORTANT
CLEARANCES
For proper and safe installation adhere to the following clearances to combustibles:
Furnace Casing = 0" Floor = Combustible Flue Pipe: Boxed in or enclosed = 2”
The following are the minimum clearances recommended for servicing:
Front = 24” Back = 6"(optional return plenum location) Top = 12"
Sides = 24" Bottom = 0”
In free air = 0”
5
Matrix Installation and Operation Instructions
3.0 VENTING
The NY Thermal Matrix is a high efficiency condensing gas furnace/boiler utilizing induced power venting. Exhaust gases are to
be vented directly outdoors, using the venting method detailed in this section. Under no conditions, may this unit vent gases into a
masonry chimney, unless it is vacant, and utilizes Matrix approved venting material as illustrated in the figures in this section.
Attaching Vent Piping to Boiler
It is extremely important for the intake and exhaust piping to be adapted to the appropriate size immediately upon exiting the boiler
cabinet. The Matrix comes with a 3” male PVC fitting to connect the air intake port of the boiler. The Matrix exhaust connection
is 3” male PVC, use approved cement to connect to venting system. Check the flue outlet gasket for proper insertion and sealing
prior to and after attaching the venting. Ensure the venting system does not apply a load or stain on the flue outlet of the boiler
(recommend using two elbows to create a “swing joint” as shown above).
Figure 3.1 Venting Construction
It is recommended that two elbows be
used, so that the slope of the horizontal
exhaust vent does not affect the vertical
plumb of the pipe connected to the boiler.
Slope all horizontal indoor exhaust
venting ¼” to ½” per linear foot.
It is recommended to have a collection point
for condensation in the intake venting.
Condensation can then be drained to an
open house drain or condensate pump.
Drain line from intake must have an
appropriate trap or shut off valve to avoid
siphoning.
IMPORTANT
The vent connection and piping must be perfectly aligned to the furnace connection. AND MUST NOT
APPLY ANY WEIGHT OR LATERAL FORCE TO THE FLUE BOX. NTI does not warranty damages to the flue
box.
In Canada, the first 3 ft (915 mm)
of vent piping must be readily accessible for inspection.
6
Matrix Installation and Operation Instructions
3.1 Vent/Air-Intake Pipe Material
Table 3.1 Acceptable Vent and Air-Intake Pipe Material
Items 1
Vent Pipe and
Fittings
Materials
PVC - DWV ANSI/ASTM D2265
PVC Schedule 40 ANSI/ASTM D1785
2, 3
United States
CPVC Schedule 40 ANSI/ASTM F441
Pipe Cement
PVC ANSI/ASTM D2564
CPVC ANSI/ASTM F493
Primers
Notes:
1
Refer to Table 3.2 for Allowable Vent and Air-Intake Pipe Sizes and Lengths.
2
Closet/alcove installations in US and Canada require approved CPVC vent pipe, fittings, cements, and primers.
3
The Air-Intake does not require high temperature pipe material. Check applicable local codes for acceptable materials.
4
ULC S636 PVC is approved for flue gas temperatures up to 149oF (65oC) and must only be used for low temperature
PVC / CPVC ANSI/ASTM F656
applications. High temperature applications requiring appliance supply water temperatures greater than 140
Installation Standards
Canada 4
All venting material in
Canada must be
ULC S636 approved.
See Note 4 below for
appropriate temperature
applications.
All plastic Vent materials
installed on gas fired
appliances in CAN/US must
meet the Standards listed in
Table 3.1. Failure to
comply could result in fire,
serious injury or death.
o
F (60oC)
must use ULC S636 approved CPVC.
Mandatory Pre-commissioning Procedure for Plastic Venting
Do not apply power to the appliance prior to Step 4 in the Mandatory Pre-commissioning Procedure for
Plastic Venting.
1. Working with the power turned off to the appliance, completely install the vent and air intake system, securely cementing
joints together. If possible, allow primers/cements to cure for 8 hours before firing the burner. If curing time is less than 8
hours, proceed with Steps 2 through 6.
2. Maintain the appliance gas supply shut-off valve in the off position.
3. Disconnect electrical leads to the Hot Surface. Ensure the cables are placed in a fashion where they will not arc to ground or
other conductor.
4. Turn power on to the appliance and apply a heat demand.
5. Allow for 3 complete trials for ignition, consisting of pre and post purge of the combustion blower, until an ignition lockout
occurs. Repeat the process two more times (i.e. 9 complete ignition sequences in total).
6. Turn power off and reconnect the electrical leads to the Igniter.
7
Matrix Installation and Operation Instructions
A
p
3.2 Venting Configurations
3.2.1 Two-Pipe Vent Termination
Figure 3.2 Two-Pipe Vent Termination
Coupling and
elbow to be
against wall
– ½” play is
acceptable
The vertical portion of the exhaust
Exhaust
Intake
termination does not require insulation,
if less than 5 feet in total length
18” Min
12” Plus Snow allowance
Exam
le 12+19=31”
Gas Vent Directly Below
Must insert
plastic bird
screen
Apply Plate
Exhaust
Intake
Outside Wall”
Exhaust
Intake
12” Plus Snow
llowance Min”
Window
”
”
4”-12” or greater
than 36”
3.2.2 Concentric Vent Termination (No longer approved for Canada)
Figure 3.3 Concentric Vent Termination
Apply Plate Here
Gas Vent Directly Below
Keep Free of Obstructions
48” min.
Minimum 12”
plus snow
allowance
4” or greater
than 24”
36” min.
Exhaust
Inlet air
Note: inlet pipe must always
be connected to the boiler.
Must insert
plastic bird
screen
Support
(Field installed)
Inlet air
Use NTI part # 82666 or York part # 1CT0303
Instructions included with vent terminal contain more detailed assembly and installation instructions.
Clearances and requirements of this manual supersede those of the instructions included with the vent terminal.
Terminal must be cemented together during installation.
8
Exhaust
Must be 1”
from wall
Matrix Installation and Operation Instructions
3.2.3 Roof Venting
Figure 3.4 Roof Venting
Roof weather seal
Flashing (field supplied)
18”
12” Plus
Snow
Support
(Field supplied)
IMPORTANT
USE OF EXISTING CHIMNEY
It is permissible to run vent pipe through an existing chimney as long as:
1. The chimney is not to be used by any other appliance.
2. Flue gases don’t enter the vacant chimney.
3. Only Trinity certified venting materials are used, see Section 3.1.
4. Vent lengths are within the maximums specified.
”
Note: inlet pipe must
always be connected
to the boiler.
9
Matrix Installation and Operation Instructions
3.3 Venting Rules and Guidelines
1. It is highly recommended that the vent terminal be located where it will not be exposed to normal prevailing winds.
2. The exhaust must be a minimum of 18” above the air inlet, and the air inlet must always be a minimum of 12” plus snow
allowance above any surface that will support snow. (Two feet plus snow allowance is highly recommended). Consult your weather
office for the maximum typical snowfall for your region. Example: New Brunswick Canada the typical maximum snowfall is 19”,
Thus in figures of Section 3.3, the inlet must be (12”+19”) = 31” off the ground, the exhaust must be (31”+18”) = 49”.
3. Under normal operating conditions this appliance will produce a plume of white gases, and should be taken into consideration
when selecting an adequate location. A 3’ diameter stainless, plastic, or vinyl shield can be used to flash the exterior of the
residence.
4. If the horizontal distance between the inlet and exhaust is more then 12”, increase minimum vertical separation by the same
amount. (If horizontal distance is greater then 6’, no additional vertical spacing is required). Example, horizontal separation equal to
24” requires a minimum vertical separation of 18”+(24”-12”) =30”. (Vertical separation is never required to be greater then 36”)
5. Elbows on outside of wall must be no greater than ½” away from the wall.
6. All indoor exhaust piping must be on a slope back to the boiler a minimum of ¼” per linear foot of vent. For applications where
excessive condensation is possible ½” per linear foot is recommended. (See illustration in Figure 3.1)
6. Exhaust vent pipe can be secured to the wall for more rigidity.
7. In all roof applications the discharge must point away from the pitch of the
roof.
8. Install adequate flashing where the pipe enters the roof, to prevent water
leakage.
9. Install and seal a rain cap over existing chimney openings, in vacant
chimney applications.
10. For installations that exit the wall below grade. Excavate site as shown in
Figure 3.5, to a point below where the pipes are to exit. Ensure that the wall is
fully sealed where the pipes penetrate the wall. The vent piping MUST be
secured to the side of the building above grade, as shown, to provide rigidity.
NTI provides a mounting bracket, PN:82075, for securing the exhaust pipes.
Ensure that the vent clearances are maintained (Inlet minimum 12” plus snow
allowance from grade, exhaust outlet 18” minimum above inlet)
11. Install the vent screens provided into both the inlet and exhaust vent
terminal elbows. The screen must be on the outside of the last elbow. Install
the screen into the female opening of the elbow. Then cut a small piece of
pipe to sandwich the screen into the elbow. NOTE be sure that the small piece
of pipe cut, does not extend past the end of the elbow. Two screens are provided in the package.
12. It is extremely important that the intake and exhaust piping be adapted to the appropriate size immediately upon exiting the
boiler cabinet.
13. All interior vent pipe shall be supported a minimum of every 36”.
Figure 3.5 Installing Venting Below Grade
10
Matrix Installation and Operation Instructions
3.4 Venting Clearances
These are code restrictions for the location of the Flue gas vent terminal. Compliance doesn’t insure a satisfactory installation; good
common sense must also be applied.
The vent terminal shall not terminate:
1. Directly above a paved sidewalk or a paved driveway that is located between two buildings, and that serves both buildings;
2. Less than 7 feet above grade where located adjacent to a paved walkway or driveway located on public property.
3. Within 3' (three feet) of a window or door that can be opened, or non-mechanical air supply inlet to any building.
4. Within 6’ of a mechanical air supply inlet to any building, or roof eve containing soffit openings.
5. Above a meter/regulator assembly within 3' horizontally of the vertical centerline of the regulator.
6. Within 3' horizontally of any gas service regulator vent outlet up to a height of 15’.
7. Less than 30” plus snow allowance above grade, or any surface that will support snow, ice, or debris. The exhaust must be a
minimum of 18” above the air inlet, and the air inlet must always be a minimum of 12” plus snow allowance above any surface that
will support snow. (Two feet plus snow allowance is highly recommended). Consult your weather office, for the maximum typical
snowfall for your region.
8. Underneath a wooden verandah, porch, or deck.
9. Underneath cement verandah, porch, or deck, unless both ends are open and the exhaust pipe is installed at least 24” under the
deck floor.
10. So situated that the flue gases are directed towards brickwork, siding, or other construction, in such a manner that may cause
damage from heat or condensate from the flue gases.
11. Less than 3’ from an inside corner of an L-shaped structure (including walls and fences).
12. Install the warning plate “Gas Vent Directly Below” 4 feet above the location of the air inlet pipe, so it is visible from at least
eight (8) feet away (Plastic Label included in the Installation Manual Package – see figure).
3.5 Determining Vent Lengths
Use the following chart to determine the maximum amount of vent pipe that can be used. This chart calculates, sweep and 45º
elbows, and 90º elbows at 5 equivalent feet. Note: chart shows allowable equivalent vent lengths for intake and exhaust vents
separately, thus an M100V operating on Natural Gas can be installed with 105 equivalent feet of intake venting and 105 equivalent
feet of exhaust venting.
IMPORTANT
The length of one vent pipe (intake or exhaust) may not exceed the length of the other vent pipe by more
then 20 equivalent feet.
The three 90° elbows of the exterior vent piping (two outlet, and one inlet) do not have to be included, as
they are taken into consideration in the vent calculations.
Propane Gas (LP) maximum vent length cannot exceed 50 equivalent feet.
Table 3.2 Maximum Vent Length
Model
M100
M100V
Vent
Size
3"Natural 105 1009590858075706560
3" LP 50 45 40 35 30 25 20 15 10 5
Gas
Max. Equiv.
Length
Number of Elbows or 45's
123456789
11
Matrix Installation and Operation Instructions
3.6 Outdoor Venting
Vent piping outside the building is permitted under the following
conditions:
o The maximum length outside the building is 20 feet. (Outdoor
length must be included in the overall vent length calculation.)
o All normal termination clearances are maintained.
o All exterior exhaust vent pipes are insulated with 3.5”-ID, ½”-
thick, Closed Cell Foamed Polyolefin Tubing i.e., “Tundra
Seal Plus” or equivalent.
o The pipe is supported every 24”
o The exhaust and inlet are sloped back to the boiler ½”
elevation for every foot.
Figure 3.6 Outdoor Venting
Supports every 24”
Exhaust
Inlet
Apply Plate Here
Gas Vent Directly Below
Keep Free of Obstructions
Maximum of 20 feet
is permitted for
outside a building
using 3” pipe ONLY.
12” plus allowance above
grade for snow
12
Matrix Installation and Operation Instructions
4.0 CONDENSATE DRAIN
This unit produces water as a product of combustion. Much of this water condenses on the heat exchanger and in the venting
system. All exhaust piping must be on a slope back to the boiler ¼” per linear foot of vent. Steps must be taken to ensure that
condensate does not collect in the venting system. Condensate must be drained from the boiler into a household drain.
WARNING
FAILURE TO PROPERLY CONNECT THE CONDENSATE LINE WILL CAUSE COMBUSTION GASES TO
ENTER THE ROOM, POSSIBLY CAUSING SERIOUS INJURY TO OCCUPANTS OR DEATH.
Note: check with your municipality, or local gas company to determine if disposal
of combustion condensate is permitted. In the State of Massachusetts the
condensate must be neutralized prior to entering a drain.
The following are important notes that must be taken into consideration when
constructing the condensate system:
o DO NOT run condensate line outside. A frozen or blocked drain will cause the
condensate to fill the combustion chamber. This will result in a no heat
condition, as the unit will shut down, and damage to the flame sensor, and
components can occur.
o NEVER use copper, steel, or galvanized piping in the construction of the
condensate system (condensate is very corrosive and will wrought most
metals).
o When a condensate pump is used or required, select a pump that is designed
for residential furnaces.
Figure 4.1 Condensate Drain Plumbing
Condensate
Drain From
Boiler
Nipple must
be cut.
Drain must be
open to allow
overflow if
blocked
Drain must
include trap
13
Matrix Installation and Operation Instructions
5.0 INSTALLING GAS PIPING
5.1 Installation
Figure 5.1 Gas Inlet Connection
Refer to the current National Fuel Gas Code ANSI
Z223.1/NFPA 54 or CAN/CGA B149.1 installation
codes, and local codes for gas piping requirements and
sizing.
Pipe size running to the unit depends on:
It is highly recommended to use
flexible gas pipe, the gas valve and
blower cannot support the weight of
piping. If piping is used, ensure that
the valve supports NO WEIGHT
Gas cock shut
Off Valve to be
"T" type handle
o Length of pipe.
o Number of fittings.
o Type of gas.
o Maximum input requirement of all gas appliances
in the residence.
Gas valve
Ensure that:
o Flexible gas pipe is used (if acceptable by local
codes). The gas valve and blower cannot support
the weight of piping, leading to blower vibration
and damaged components. If rigid piping is used,
ensure that the valve supports NO WEIGHT
o You plan the installation so that the piping does not
interfere with the vent pipe, or the removal of the valve, burner, and serviceable components.
o The Boiler shall be installed such that the gas ignition system components are protected from water (dripping, spraying, rain
etc.) during installation and servicing.
o The gas piping is large enough for all the appliances in the home. No appreciable drop in line or manifold pressure should
occur when any unit (or combination of units) lights or runs.
o Always use a pipe-threading compound that is resistant to propane (LP) gas solvent action. Use sparingly to all male threads,
starting at two threads from the end. Over doping or applying dope to the female end, can result in a blocked gas line.
DO NOT TIGHTEN FITTINGS WITHOUT SUPPORTING THE GAS VALVE as damage to the valve or motor can occur.
Install a manual “equipment Shut-Off Valve” as shown. Valve must be listed by a nationally recognized testing lab.
5.2 Testing and settings
Gas line and regulator(s) must be able to support a line pressure at the gas valve of 4-9”w.c for Natural Gas and 9-12”w.c for LP
while running at maximum rate. Matrix gas valves are equipped with two bleed ports to measure Line and Manifold pressure.
Note: Line pressure adjustments can only be made at the gas regulator, NOT AT THE GAS VALVE.
WARNING
IF LINE PRESSURE EXCEEDS ½ PSI (14 INCHES W.C.) COMPLETELY DISCONNECT LINE TO GAS VALVE.
THIS EXCESSIVE PRESSURE CAN DAMAGE VALVE, CAUSING A LEAK RESULTING IN FIRE OR
EXPLOSION.
14
Matrix Installation and Operation Instructions
The gas valve is equipped with a throttle/input adjustment
Figure 5.2 Setting Combustion
screw. The input screw “MUST NEVER BE
ADJUSTED” without verifying proper combustion with a
calibrated combustion analyzer.
Manifold
Input Screw
out
Gas IN
Air In
Line Pressure
CAUTION
The Matrix is tested with Natural Gas having a heating value of 1020 BTU per cubic foot. For areas with
lower heating values, a combustion test is required to obtain optimum operation.
Using a calibrated flue gas analyzer, check the combustion and compare it with the acceptable requirements. The test should be
performed at maximum fan speed (“Gas Input Value”).
Adjusting Combustion - Use the input screw to adjust the amount of gas available for combustion. Increasing gas increases CO
and CO
CO – At maximum fan speed, the CO reading is
the most critical to the safe operation of the boiler.
The CO should be no higher than 175 PPM at any
condition. If the CO is over 140 PPM, the input
should be reduced until the CO is less than 140
PPM or the CO
If the CO is over 140 PPM and the CO
8% (9% for LP Gas), contact NTI for assistance.
CO – At minimum fan speed, should be checked, and the CO should be less than the reading recorded at high fan speed. The CO
at low fan speed must not be at least as high as the CO
. Reducing gas decreases CO and CO2.
2
is reduced to 8% (9% for LP Gas).
2
is less than
2
Table 5.1 Normal Range of Combustion Products
(At maximum fan speed, 240)
Natural Propane
Carbon Dioxide CO2 % 8-9.5* 9-10.5*
Carbon Monoxide CO ppm 25-175* 25-175*
NOX ppm 10-50 10-50
*Note: On colder days CO
days it should be closer to the higher number. CO should be highest at the
maximum firing rate.
recorded at high fan speed, but not more then 9.5% (10.5% for LP Gas).
2
should be closer to the lower number, on warmer
2
2
Figure 5.3 Gas Input Screw Adjustment
Input Screw – Is a multiple turn needle
valve. Fully open to close is approximately
17 turns. Typical adjustment for Natural
Gas is 0-1 full turns in or out. Typical
adjustment for LP Gas is 0-3 full turns in
or out (after conversion is performed).
ATTENTION
IF FOR ANY REASON THE INPUT SCREW IS ADJUSTED, A “COMBUSTION ANALYZER” MUST BE USED TO
ENSURE SAFE AND PROPER OPERATION.
15
Input Screw Adjustment
Decrease gas
Turn Clockwise
Increase gas
Turn counterclockwise
Matrix Installation and Operation Instructions
6.0 BOILER PLUMBING
WARNING
THIS APPLIANCE CONSISTS OF A “LOW-MASS” BOILER AND MUST HAVE ADEQUATE WATER
FLOWING THROUGH IT WHENEVER THE BURNER IS ON. FAILURE TO DO THIS WILL DAMAGE
THE UNIT AND VOID THE WARRANTY. PLUMBING MUST INCORPORATE A PRESSURE
REGULATING FILL VALVE AND PRESSURE RELIEF VALVE.
WARNING
HYDRONIC SYSTEMS, OLD AND NEW, MUST BE FLUSHED TO REMOVE SEDIMENT, FLUX,
FILINGS, ETC. FAILURE TO DO SO WILL SERIOUSLY DAMAGE THE BOILER, VOIDING
WARRANTY. (CLEAN WITH FERNOX CLEANER F3, NTI PART NUMBER: 83449.)
WARNING
WATER WITH A TOTAL HARDNESS GREATER THEN 100PPM (6 GRAI NS/GALLON) MAY RESULT
IN HEAT EXCHANGER FAILURE AND WILL VOID YOUR NTI WARRANTY. T REAT ALL SYSTEMS
WITH FERNOX PROTECTOR F1 (NTI PART NUMBER: 83448), WHICH IS INCLUDED WITH THE
MATRIX PACKAGE.
WARNING
THE BOILER FITTINGS CAN’T SUPPORT ANY WEIGHT. SUPPORT ALL OF THE PLUMBING
SYSTEM EXTERNALLY.
DO NOT APPLY TORQUE TO THE PLUMBING FITTINGS. HOLD THE FITTING WHEN INSTALLING,
CAUTION
This appliance is designed to operate in residential and commercial heating systems, and is not intended
for:
1. Outdoor installations, or unheated spaces, which can cause freezing.
2. Process heating of potable water, or any other fluids.
3. Un-pressurized, and gravity feed heating systems.
4. Heating systems with very low pressures or flow.
IMPORTANT
1. Understand and follow the plumbing requirements provided in this section.
2. Keep serviceability in mind when installing plumbing around the furnace cabinetry.
3. Install fittings that will allow the system to be flushed if needed during annual check-ups.
4. Add inhibitor, Fernox Protector F1 (NTI Part Number: 83448), to the system water to help prevent
limestone and magnetite deposits, and galvanic corrosion. Bottle provided will treat an average 100liter (26 US gallon) system.
16
Matrix Installation and Operation Instructions
6.1 Plumbing (Minimum Requirements)
Pressure Regulator “Fill Valve” (Supplied):
operated as such. A 12-15 PSI pressure regulator is provided with the Matrix and must be field installed as per the installation
instructions. Note: Local authorities may require the installation of a certified “back-flow preventer” immediately before the
pressure regulator.
Circulating Pump (Supplied): The Matrix has a built-in circulator to pump water from the boiler to either the internal forced-
air heating coil or the internal domestic coil (brazed plate heat exchanger). An external circulator is only required if the Matrix is
also being used to supply heat to a hydronic heating system, the external circulator must be sized for the requirements of the
hydronic heating system.
Relief Valve (Supplied):
horizontal. Ensure that the discharge is piped to a location were steam or water won’t cause personal injury or appliance and
property damage.
Air Purging (Supplied):
evacuation of air from the internal plumbing. For installations in conjunction with a hydronic heating system an Air Scoop,
installed as shown in the following diagrams, must be installed to remove air as it circulates through the system. If air continues to
be a problem an air scrubber must be used (recommend Spirovent # VJR 100TM).
Expansion Tank (Supplied):
Matrix unit. An external expansion tank must be field sized, supplied and installed for Matrix units installed in systems with
hydronic heat.
Low Water Cutoff:
where the Matrix boiler is located above the radiation or where local authorities require it. Ensure that the water line of the “Low
Water Cutoff” is at least 6” above the top of the boiler.
It is recommended that the LWCO be situated so that it can be tested without removing water from the Matrix. Tri-cocks and a
gauge glass are highly recommended.
NTI recommends against the installation of isolation valves between the LWCO and the Matrix.
Use the normally open contacts of the LWCO to break 24V to the burner circuit (See Wiring Diagram).
A 30PSI Relief Valve is provided with the system, it is to be mounted with the discharge in the
Boilers are designed to operate with airless water in the system. The Matrix design allows for the
The Matrix comes with a built-in expansion tank that is sized to handle the volume of water in the
A certified LWCO is not provided in the package, however one is to be field installed in any application
The Matrix operates as a boiler to provide heat, thus it must be installed and
CAUTION
DAMAGE WILL OCCUR IF THE BOILER IS FIRED WITH NO WATER IN IT, OR REPETITIVE NO
FLOW OPERATIONS, WHICH WILL VOID THE WARRANTY.
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