NTI Matrix M100, Matrix M100V Installation And Operating Instructions Manual

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.

17

Matrix Installation and Operation Instructions

A

6.2 Matrix Boiler Connections

Figure 6.1 Boiler Feed Water Connections

Standard Configuration Optional (Hydronic Add-On)

Relief Valve
(supplied)

Boiler Feeder
Valve (supplied)

Backflow
Preventer

Drain Valve

ir Scoop

Boiler Feeder
Valve (supplied)

Backflow
Preventer

Hot Supply

Relief Valve
(supplied)

Cold Return

Expansion Tank

IMPORTANT

Expansion tank and air removal device for the internal functions of the Matrix are included and provide only
enough capacity for these functions.

Additional secondary systems require appropriately sized air removal and expansion capability.

6.3 Hydronic Heating Additions (Optional)

ATTENTION

1. LOW TEMPERATURE APPLICATIONS (i.e., In-floor) require the use of mixing controls such as a Tekmar
injection system or thermostatic mixing valves (See 6.2.3 to 6.2.4). During a call for “Forced-Air Heat”
the Matrix will operate at a constantly varying boiler water temperature, this temperature may at times
exceed the maximum allowable temperature for some or all of the hydronic zones.

2. HI TEMPERATURE APPLICATIONS (i.e., finned tube baseboard) do not require mixing controls,
however, when the Matrix is operating during a call for Forced-Air Heat the hydronic system will only
receive the heat leftover from the Matrix air handler; keep this in mind during system sizing and design.

3. In applications that do not use zone valves it is important to incorporate into the system design means
necessary to prevent THERMAL SIPHONING. Note: the following drawings are to be used as a reference
only for the system designer.

18

Matrix Installation and Operation Instructions

The Matrix provides heat to hydronic heating systems in two ways:

1. Hydronic Call

(24 VAC @ H without a call for forced air heating) – A boiler demand is initialized by sending a ‘Hydronic

Demand’. The boiler will then maintain a set point of ‘HYD’ (See Table 9.3).

2. Hydronic Shared Call

(24 VAC @ H concurrent with a forced air call) – With this demand the forced air system is given
priority. The set point temperature will be the higher of the ‘HYD’ setting or the forced air set point. During a shared call the
hydronic system can only receive the water temperature returning from the fan coil.

If, during a shared call, the boiler can not supply enough heat to maintain a minimum plenum air temperature of 95°F, the Fan
Controller will shut-off the hydronic loop using the N.O/N.C contacts on the terminal board until the forced air temperature
recovers.

The Matrix has a Grundfos 15-42 built into the primary loop. Given the head loss of the primary loop, the flow rate is fixed at 5
gpm. When designing any secondary heating system it is important to allow for an increase boiler set point to ensure full capacity
of the secondary system. This may necessitate the use of mixing valve to protect the secondary from elevated water temperatures.

Example: For a 75,000 Btu/hr secondary system with a desired water temperature of 110°F and 20° ∆T the flow rate will required
is BTU/hr/(500* ∆T) or 75,000/(500*20) = 7.5 gpm. Since this exceeds the flow rate in the primary loop, a higher boiler ∆T will
be required to maintain the desired 110°F. This is calculated as follows:

∆Tboiler = ∆Tsecondary* gpm

= 20*7.5/5

secondary

/gpm

primary

= 30°F

Adding the ∆Tboiler to the return water temperature of 90°F (110°F-20°F) gives a required ‘HYD’ set point of 120°F.

6.3.1(A) Multiple High Temperature Zones (Zone Valves)

Zone #3 Zone #2

Make Up

Water

Zone #1

Backflow

Preventer

Zone
Valve

Pressure

Reducing

Valve

System
Circulator

Expansion

Tank

High Temperature

Zones Only

Air
Separator

NTI

19

Matrix Installation and Operation Instructions

6.3.1(B) Multiple High Temperature Zones (Zone Valves) – Wiring w/ Zone Controller

6.3.1(C) Multiple High Temperature Zones (Zone Valves) – Wiring w/o Zone Controller

20

Matrix Installation and Operation Instructions

6.3.2(A) Multiple High Temperature Zones (Zone Circulators)

Zone #3 Zone #2

Make Up

Water

Zone #1

Backflow

Preventer

Pressure

Reducing

Valve

Check
Valves

Zone
Circulators

Air
Separator

NTI

Expansion

Tank

6.3.2(B) Multiple High Temperature Zones (Zone Circulators) – Wiring w/ Zone Controller

21

Matrix Installation and Operation Instructions

6.3.3 Multiple Controlled-Temperature Zones (Tempering Valves)

• Use wiring configuration in 6.3.2(B)

Temp #3

Temp #2

M

H

M

H

C C

Temp #1

Zone
Circulators

Tempering
Valves

M

H

C

Air
Separator

NTI

Make Up

Water

Backflow

Preventer

Pressure
Reducing

Valve

Expansion

Tank

6.3.4(A) Single Controlled-Temperature Zones (Injection System)

Zone #3 Zone #2

Make Up

Water

Zone #1

Backflow

Preventer

Zone Valves

Pressure

Reducing

Valve

Temperature
Sensor (S1)

System
Circulator

Expansion

Tank

Air
Separator

One Controlled

Temperature Only

Temperature
Sensor (S3)

Injection
Circulator

NTI

22

Matrix Installation and Operation Instructions

6.3.4(B) Single Controlled-Temperature Zones (Injection System) – Wiring Tekmar 356

6.3.5 Multiple Controlled-Temperature Zones (Injection System)

Low Temp. Zones

High Temp Zones

Injection
Circulators

Temperature
Sensors

System Circulators

Boiler
Circulator

Air
Separator

Multiple Controlled

Temperatures

NTI

Make Up

Water

Backflow

Preventer

23

Pressure

Reducing

Valve

Expansion

Tank

Matrix Installation and Operation Instructions

7.0 Domestic Hot Water System

7.1 DHW Description of Operation

The Matrix heats domestic hot water on demand, indirectly, using a brazed plate heat exchanger. Using an internal flow meter, the
Matrix recognizes a DHW demand when the DHW flow rate is greater then 0.4gpm. The Matrix immediately goes into domestic
mode, regardless of what other systems may have been operating, the burner fires and the Matrix attempts to achieve a calculated
set point which depends on the sensed water flow rate and the programmed H20 setting (See Section 9.2.1). The H20 setting is
accessed via the menu in the Matrix Fan (blue) controller, and should be set at a value equal to (or slightly greater) than the
temperature required at the hot water fixtures, e.g. 125ºF. The Fan control will communicate to the Boiler (red) controller a boiler
water temperature set point applicable for the sensed flow rate and the H20 setting selected. The higher the flow rate and/or H20
setting, the higher the boiler water set point (boiler water setting will not exceed the H20 setting by more then 30ºF). NTI provides
a Thermostatic Mixing Valve adjustable from 100 to 145°F; the mixing valve shall be installed between the Matrix DHW supply
fitting and the hot water supply pipe to the fixtures (See Figures 7.1 and 7.2), thus providing user protection from scalding hot
water. Note: code requirements may require the maximum setting to be fixed at 120°F, see “Thermostatic Mixing Valve” below
and the instructions included with the valve.

7.2 DHW System Plumbing & Set-up
DHW Inlet & Outlet Connections:

the Matrix Cabinet; on the inside of the cabinet the two lines are connected to the Brazed Plate Heat Exchanger. The cold Inlet line
flows through an integrated brass flow meter before connecting to the rear fitting of the Brazed Plate Heat Exchanger. The hot
Outlet line flows directly from the front fitting of the Brazed Plate Heat Exchanger. See Figures 7.1 and 7.2 for installation details

Thermostatic Mixing Valve: A Sparcomix AM101-US-1 is provided with your package. This valve regulates the water

temperature leaving the plate heat exchanger, and must be used in every instance. The dial can be set to the desired temperature

required. Consult the Honeywell manual SD/IS150 for detailed instructions and settings. (Note: the valve must be set to a supply

temperature of not more then 120˚F. It is the responsibility of the installer to set the valve and remove the dial.)

The Matrix has two potable water connections, Inlet & Outlet, which exit the left side of

WARNING

IF THE ANTI-SCALD VALVE IS NOT INSTALLED TO THE HONEYWELL SHEET ‘SD/IS150’, AND THIS
MANUAL, OPERATION MAY SUPPLY SCALDING HOT WATER TO THE OCCUPANTS.

Y-Strainer (Supplied):

the location shown in Figures 7.1 and 7.2; dirt and other debris can cause the flow meter to malfunction.

To protect the Matrix’s internal flow meter, it is important to install the factory supplied Y-Strainer in

Check Valve: A check valve must be field provided and installed on the outlet of the mixing valve to prevent expansion devises

down stream from back flowing when the water pressure drops during cold water draws. Failure to prevent the backflow will cause
water to flow forward through the flow switch, activating it, when the cold-water draw has ended and the water pressure increases.

Throttling Valve: Installed a throttling valve, after the mixing valve, to regulate the maximum hot water flow rate. The Matrix is

limited to a firing rate of 150MBH; therefore excessive flow rates will result in cooler hot water temperatures.

Drain and Isolation Valves: Install drain and isolation valves on the inlet and outlet of the brazed plate heat exchanger, as

shown in Figures 7.1 and 7.2 so it can be flushed free of possible build-up caused by dirt or hard water.

Hard Water: To prevent the formation of scale on the inside of the brazed plate heat exchanger and other components in the

domestic hot water system, water with hardness higher than 50 ppm Calcium Carbonate must be treated with a “Water Softener”
prior to entering the appliance. Plugging of the domestic system by scaling or accumulation of dirt is not the responsibility of NY
Thermal Inc., and suitable steps shall be taken to avoid it.

24

Matrix Installation and Operation Instructions

Cleaning: Brazed plate heat exchangers operate with high turbulence flow, even at low flow rates. This high turbulence keeps

small particles in suspension minimizing fouling and scaling. However, in some applications the fouling tendency can be very
high, e.g. when using extremely hard water at high temperatures. In such cases it is always possible to clean the exchanger by
circulating a cleaning liquid. Use a tank with weak acid, 5% phosphoric acid or, if the exchanger is frequently cleaned, 5% oxalic
acid. Pump the cleaning liquid through the exchanger. For optimum cleaning, the cleaning solution flow rate should be a minimum
of 1.5 times the normal flow rate, preferably in a back-flush mode. After use, do not forget to rinse the heat exchanger carefully
with clean water. A solution of 1-2% sodium hydroxide (NaOH) or sodium bicarbonate (NaHCO3) before the last rinse ensures
that all acid is neutralized. Clean at regular intervals.

7.2.1 Instantaneous DHW (w/o Storage Tank)

The Matrix will provide domestic hot water continuously when flow is sensed by the flow meter. This method is the most efficient
means of heating water by allowing the boiler to operate at a lower return water temperature, thus increasing combustion efficiency,
and by minimizing standby losses. See Figure 7.1 for installation details.

DHW Limitations:

o NO STORAGE - As there is no water storage, the boiler can only provide water at the temperature specified at the

corresponding flow rates. Flow through the fixtures must be regulated so not to exceed the ability of the boiler to heat the

water. MORE FLOW = LESS TEMPERATURE. See Table 7.1 and “Procedure for Setting up Domestic Hot Water”.

o DOESN’T MAINTAIN TEMPERATURE – When there is no call for domestic the unit is off. From a dead stop the unit will

detect flow and start providing heat in 15 seconds, and be up to capacity by 25 seconds. Once running, the unit can provide an
endless amount of hot water. If the flow is momentarily turned off for whatever reason, the unit will turn off. Once off, the unit
must relight, and not provide heat for 45-75 seconds. This will cause cold unheated water to pass through the unit, and advance

through the domestic plumbing between the previously heated (hot) water, and the new (hot) water. This can be mistaken for
an inability to adequately heat the water.

“Storage”Feature (St0):

feature, when enabled, will keep the boiler water hot for a period of 1 to 24 hours following a call for domestic hot water (See
Section 9.2.1 for setting). When the boiler water drops below 140°F the boiler will fire and bring the boiler to 180°F before
shutting off. This “Storage” feature helps in reducing the wait time associated with a tankless hot water system. In systems where
a storage tank is used (See Figure 7.2), this feature should be disabled, e.g. set to OFF.

As the Matrix produces domestic hot water instantaneously; there are inherent limitations of the system:

For improved domestic hot water comfort, the Matrix incorporates a “Storage” feature. This storage

25

Matrix Installation and Operation Instructions

Procedure for Setting up Domestic Hot Water: If the Matrix is being installed in an application that uses municipal water,

often the pressure is high enough to generate flow rates at the faucets that will exceed the appliances capacity to heat it. See the
following table to determine what flow can be expected at various inlet and outlet water temperatures.

Table 7.1 Matrix DHW Flow Rates (flow rates in usgpm)

110
115
120
125
130
135

Outlet Water (F)

140

To avoid having too much flow at the faucets use the throttling valve located at the “Cold Supply” in Figure 7.1 to limit the overall
flow of domestic hot water. Follow these instructions to achieve the best delivery of DHW:

o Open throttle valve fully.
o Turn the dial on the mixing valve to the desired setting (do not exceed 120˚F).
o Create the maximum amount of DHW flow that is likely to occur on a regular basis. (Usually tub faucet, or choose two other

faucets)

o Allow the boiler to reach steady state, and then throttle the shut-off valve until the hot water exiting the plate heat exchanger is

slightly warmer than the mixed water exiting the mixing valve. Ensure the boiler is firing at the maximum rate, if not increase
the H20 setting and repeat this step. (It is beneficial to keep the H20 setting as low as possible to limit short cycling and
maintain efficiency)

40 45 50 55 60 65 70

3.9 4.2 4.5 4.9 5.4 6.0 6.7

3.6 3.9 4.2 4.5 4.9 5.4 6.0

3.4 3.6 3.9 4.2 4.5 4.9 5.4

3.2 3.4 3.6 3.9 4.2 4.5 4.9

3.0 3.2 3.4 3.6 3.9 4.2 4.5

2.8 3.0 3.2 3.4 3.6 3.9 4.2

2.7 2.8 3.0 3.2 3.4 3.6 3.9

Inlet Water Temperature (deg. F)

If the flow rates listed in Table 7.1 are not high enough for the application, install a storage tank with re­circulating loop as per Section 7.2.2 and Figure 7.2.

7.2.2 Matrix w/ DHW Storage Tank

To completely avoid the DHW limitations inherent with on demand hot water heating, install a DHW storage tank as per the DHW
plumbing schematic shown in Figure 7.2. When the tank temperature is insufficient, an aqua-stat (T-stat) located within the storage
tank completes a 120VAC circuit to a potable (bronze or Stainless Steel) circulating pump. The pump circulates water from the
bottom of the storage tank (typical location of a drain fitting) to the DHW inlet fitting of the Matrix (Rear fitting to the Flow Meter
and Brazed Plate Heat Exchanger). The Matrix Flow Meter senses the water flow and triggers a DHW demand; heated water flows
from the Matrix and enters the inlet fitting of the storage tank.

26

Matrix Installation and Operation Instructions

Figure 7.1 DHW Piping (Tankless – On demand)

Figure 7.2 DHW Piping (w/ Storage Tank)

27

Matrix Installation and Operation Instructions

8.0 WIRING

8.1 Field Wiring to Matrix

All wiring must be in accordance with the Canadian Electrical code, CSA C22.2, and any applicable local codes. Ensure that the
wiring is in accordance with this manual.

The boiler must be electrically grounded in accordance with the National Electrical Code ANSI/NFPA 70, or local codes, and/or the
Canadian Electrical Code CSA C22.1.

All connections to the Matrix are made at the terminal board provided. This terminal board can be found on the left side of the
appliance just above the plumbing connections. The following connections are available, and provide different functions according
to which inputs are energized.

Figure 8.1 Line Voltage Field Wiring

WARNING

THE MATRIX TERMINAL STRIP IS FOR LOW VOLTAGE (MAX 24 VAC) AND LOW LOAD (MAX 1 AMP)
CONNECTIONS. ANY ELECTRICAL LOADS IN EXCESS OF 24VAC OR 1 AMP MUST BE ISOLATED USING
RELAYS. FAILURE TO FOLLOW THESE INSTRUCTION CAN RESULT IN FIRE.

ATTENTION

1. Before providing 120 Volts to the appliance, do a continuity check between all wires and ground to
make sure that there are no electrical leaks that could damage the Matrix circuitry .

2. Before providing 120 Volts to the appliance, do a polarity check of the line and neutral wires, line must
be connected to black and neutral must be connected to white.

3. Do not use magnetic tip screwdriver near the Matrix control boards.

4. Ensure that the wiring for the plenum and outdoor air sensor is not damaged or grounded.

5. Caution: Label all wires prior to disconnecting them when servicing controls. Wiring errors can cause
improper and dangerous operation

28

Matrix Installation and Operation Instructions

Figure 8.2 Low Voltage Filed Wiring

29

Matrix Installation and Operation Instructions

Table 8.1 Low Voltage Field Connections (See Figure 8.2)

Terminal Description

Plenum
Sensor

Outdoor
Sensor

H

FS

DH

G
R
W1

W2

Y1

Y2

NC
COM

NO

24V COM

Plenum Temperature Sensor – Each Matrix is provided with a temperature sensor that is to be field installed in the
supply plenum. When installed the Matrix Fan (blue) controller with display the plenum temperature and may provide
additional features depending on the application.

Outdoor Temperature Sensor – Each Matrix is provided with an outdoor temperature sensor that may be field
installed to provide Outdoor Reset for applications were the Matrix is providing heat to a Hydr onic Heating System.
Hydronic Heat Input – Input requiring 24VAC from terminal R to initiate a demand for Hydronic Heat. Switch is
made using an isolated end switch (dry contact), e.g. hydronic zone controller. Not used in applications w/o Hydronic
Heating. Boiler temperature setting is made via the HYD setting in the (red) Boiler Controller, see Table 9.4.
DHW Heat Input – Input requiring 24VAC from terminal R to initiate a demand for DHW Heat. Switch is made using
an isolated end switch (dry contact), e.g. dhw flow switch or tank aqua-stat. Note: this input is normally not used, as
the Matrix incorporates a DHW Flow Meter to detect DHW demands.
De-Humidistat Input – Input requiring 24VAC from terminal R to initiate a demand for high ventilation with the
optional built-in HRV (Heat Recovery Ventilator). Switch is made using an isolated end switch (dry cont act), e.g.
centrally located De-humidistat (may be incorporated in Thermostat), or “wet room” timers. Note: this function only
acts to de-humidify during colder weather by increasing ventilation, it is not intended for de-humidification during
warmer months.
Circulation Fan Input – Input requiring 24VAC from terminal R to initiate a demand for the Circulation Fan. Switch is
made using an isolated end switch (dry contact) normally incorporated in the home thermostat. Air circulation rate is
set via the FAN setting in the (blue) Fan Controller, see Table 9.5.

24VAC Hot – Power supply for inputs H, FS, DH, W1, W2, Y1 and Y2.
Forced Air Central Heat Input – Input requiring 24VAC from terminal R to initiate a demand for the Forced Air

Central Heat. Switch is made using an isolated end switch (dry contact) normally incorporated in th e home
thermostat.
Forced Air Central Heat Input (Stage 2) - Input requiring 24VAC from terminal R to initiate a demand for Stage 2
Forced Air Central Heat. Switch is made using an isolated end switch (dry contact) normally incorporated in the home
thermostat. Note: most application will not require the use of input W2, NTI recommends using W1 only for Forced
Air Central Heating.
Air-Conditioning / Heat Pump Input (Stage 1) – Input requiring 24VAC from terminal R to initiate a demand for
stage 1 cooling (or heat pump). Switch is made using an isolated end switch (dry contact) normally incorporated in
the home thermostat. CFM rate adjustable via Y1 setting in the (blue) Fan Controller, see Table 9.5.
Air-Conditioning / Heat Pump Input (Stage 2) – Input requiring 24VAC from terminal R to initiate a demand for
stage 2 cooling (or heat pump). Switch is made using an isolated end switch (dry contact) normally incorporated in
the home thermostat. CFM rate adjustable via Y2 setting in the (blue) Fan Controller, see Table 9.5. Note: Y2
demand overrides a Y1 demand.
Hydronic Heat Lockout Relay Contacts – The Matrix Fan control incorporates a Normally Closed (NC) and a
Normally Open (NO) relay contact that switches position on a demand for DHW. The contacts are to be used to
lockout the Hydronic Heat draw during concurrent DHW demands in order to maintain DHW priority. Maximum
switching capacity of 2 Amps at 24VAC.
24VAC Common – Neutral for the 24VAC power supply from the Matrix. This contact can be used in conjunction
with terminal R to provide a power source for a digital thermostat.
NOTICE: 24V COM to the A/C Condenser Unit must be broken by the Matrix AC Freeze-stat included with the
installation package, see Figure 8.2.

30

Matrix Installation and Operation Instructions

8.2 Matrix Factory Wiring Schematic

8.2.1 Boiler Control Wiring

Consult diagram on unit for exact wire routing.

31

Matrix Installation and Operation Instructions

8.2.2 Fan Control Wiring

Consult diagram on unit for exact wire routing.

32

Matrix Installation and Operation Instructions

9.0 CONTROL SETUP

The Matrix used two devices to control the functions required by the Matrix. The Matrix Boiler Control (red face) controls and
ensures the safe operation of the boiler functions of the Matrix much the same as the Sentry 2100 does in the Trinity products. The
Matrix Fan Control (blue face) controls all of the operation and safety functions related to air handling and hot water dispatching.
The fan controller controls the forced air modulation, ventilation, as well as priority of domestic hot water and secondary heating
systems.

ATTENTION

The Matrix Boiler Control (Sentry) is different from the Sentry controller used on any other NTI
products and is NOT INTERCHANGEABLE.

9.1 Controller Displays

9.1.1 Matrix Boiler Control (Sentry) Display (Red Face Plate)

The Matrix Boiler Control communicates to the user what is happening in the system by using an LED display and a series of LED
indicators.

Burner/Bruleur

Forced Air Demand

Hydronic Demand

DHW Demand

Gas Input

Air

Boiler

Boiler
Temp

9.1.2 Matrix Fan Control Display (Blue Face
Plate)

Setpoint

TCA

Temp

Value

Matrix Boiler Control

Table 9.1 Matrix Boiler Control Display

Display Description

Burner/Brûleur

Indicates that the ignition system is
activated
Indicates a call for forced air heat –

Forced Air

Demand

Please note. There may still be a call
for forced air heat even when
thermostat is satisfied (off).

Hydronic Demand Indicates a call for hydronic heat

DHW Demand Indicates a call for domestic hot water

Boiler Temp

Boiler Setpoint

Air Temp

When illuminated, display is showing

boiler water temperature

When illuminated, display is showing

boiler water set point

When illuminated, display is showing

outdoor temperature

When illuminated, display is showing

Gas Input Value

current gas input value. See chart to
determine input rate.

Space Heat

Cooling

DHW

Hydronic

Recirc.

HRV On

Defrost

High

Humidity

NOCOMNC

Matrix Fan Control

33

Table 9.2 Matrix Fan Control Display

Display Description

Space Heat Indicates a call for forced air heating

Cooling Indicates a call for cooling

DHW Indicates a call for domestic hot water

Hydronic Indicates a call for hydronic heat

ReCirc.

Indicates a call for continuous
circulation/ventilation

HRV On Indicates the HRV is ventilating

Defrost Indicates the HRV is in defrost mode

High Humidity

Indicates a call for high ventilation of HRV

Matrix Installation and Operation Instructions

9.2 Operation and Set-up

The Matrix employs a pneumatic modulation system. This modulation system increases or decreases the velocity of the combustion
blower, to meet the demand for heating. The gas valve senses this change in blower pressure and introduces the required amount of
gas to ensure correct combustion. The Sentry reads the boiler water temperature, compares it to the set point, and adjusts the burner
firing rate accordingly by varying the speed of the combustion blower.

The (Blue) Fan Controller communicates the appropriate demand and temperature set point to the (Red) Boiler Controller via a
series of digital and analog inputs. Table 9.3 shows the Boiler Controller’s response to the demand. For more information on

‘RESET MODE’ see section ‘9.3 Outdoor Sensor Operat i o n ’.

Table 9.3 Conventional vs. Outdoor Reset Mode

Standby/Storage

Mode

Primary

Forced Air

Call (W1)

Auxiliary

Forced Air

Call (W2)

Shared Call

Forced

Air/Hydronic

Hydronic

Demand (H)

DHW

Demand

Storage

Off

MODE

CONVENTIONAL

Condition

Set Point

Burner On
Burner Off

Heat Circ.

Off On On On On On On

Standby/Storage

Condition

MODE

RESET

Set Point

Storage

Off

Burner On
Burner Off

Heat Circ.

Note 1. SP (Setpoint) received from Matrix Fan Controller.

Off On On On On On On

Storage

On

Heat (W1)

- 160°F SP

- 140°F SP

Note 1

Note 1

Aux Heat

HI

HI

(W2)

Note 1

Note 1

Shared (W1/W2

Greater of SP/ HI

Greater of SP/HI

and H)
and HYD
and HYD

Hydronic Call

HYD

HYD-DIF H2O+30

- 180°F 210°F 210°F 210°F HYD + 10

Primary

Mode

Storage

On

- 160°F SP

- 140°F SP

Forced Air

Call (W1)

Heat (W1)

Note 1

Note 1

- 180°F 210°F 210°F 210°F HYD

Auxiliary

Forced Air

Call (W2)

Aux Heat

(W2)

HI

HI

Calc.

Calc.

Note 1

Note 1

Shared Call

Forced

Air/Hydronic

Shared (W1/W2

and H)

Greater of SP/ HI

and HYD

Calc.

Greater of SP/ HI

and HYD

Calc.

Calc.

Calc.

Hydronic

Demand (H)

Hydronic Call

HYD

Calc.

HYD

-DIF H2O+30

Calc.

+ 10

Calc.

Domestic

Only

H2O to

H2O+30

210°F

DHW

Demand

Domestic

Only

H2O to

H2O+30

210°F

9.2.1 Setting Matrix Boiler Control (Sentry)

Programming is accomplished by a series of three push buttons located on the bottom side of the control. (Function,

enter the programming mode, press the function key once. To scroll through the various menu options depress

↑

displayed. To alter the value press Function once, and the current value will be displayed, then use

for up, and ↓ for down, until

↑

and ↓). To

↑

until the menu is

the desired value is obtained. To enter the selected value press Function, which will return to the menu. When all desired values are

selected, scroll to the RUN menu, and press Function, which exits the Programming Mode and initiates normal operation. A safety
feature has been added to ensure that if the control is left in the Program Mode, the unit will turn off if left in program mode longer

than 30 seconds without receiving an input. Press Function once to continue programming or to start boiler operation.

34

Matrix Installation and Operation Instructions

g

g

Table 9.4 Matrix Boiler Control Programming

Menu Level Description

Main Value Typical Settings

Program Mode - When Run is displayed controller

RUN

HYD 80-200

HI 80-200

DIF 1-40

RES 70-HI

SFS 75-100
HFS 100-240

LFS 46-100

FrE ON/OFF
Sto OFF-24

is in ‘Prog’ mode. Arrow up or down to scroll
through menus

Hydronic Call Setpoint
Auxiliary Heat Setpoint – prior to outdoor reset

adjustment
Differential Setting - Applies only to Hydronic Only
setpoint. Temperature difference below setpoint at
which burner will re-light.
Sets Outdoor Reset Curve Slope – See
Determining Reset Temperature for more
information.

Starting Gas Input Value
Maximum Gas Input Value
Minimum Gas Input Value
Freeze Protection – Operates burner and circulator

if temperature drops below 40ºF.
Storage Feature Timer – Length of time in hours
stora

e feature will keep boiler hot.

100-120 Infloor (High Mass)
140-160 Infloor (Low Mass)

140-160 Fan Coil

48 (min 46)

190

10

85
80

240

ON

2

To start the control operation, you must return to RUN on the menu, and press Function. Normal
operation will begin. Controller will return to RUN mode if no button is pressed for 2 minutes.

9.2.2 Setting Matrix Fan Control

Just as the Matrix Boiler Controller controls all of the operation and safety functions of the boiler, the Matrix Fan Controller,
controls all of the operation and safety functions related to air handling and hot water dispatching. The fan controller controls the
forced air modulation, ventilation, as well as priority of domestic hot water and secondary heating
systems.

Table 9.5 Matrix Fan Control Programmin

Menu Level Description

Main Sub Value Default
RUN

OFF HRV Mode – Always off unless call for high ventilation (DH)

HRV

HEA

Y1 40-Y2 80 Stage 1 AC/HP Flow x 10 = CFM, settable from 400 up to Y2 (1600 max).
Y2 Y1-160 120 Stage 2 AC/HP Flow x 10 = CFM, settable from Y1 (400 min) up to 1600.

FAN 40-160 40 Fan circulation rate (G) x 10 = CFM, settable from 400 to 1600.

BAL

H2O 100-160 125 Set point for desired DHW temperature in degrees Fahrenheit.

rAd 1 or 2 2

ON
PF1 Heat Profile 1 400 to 1000CFM; 50,000 Btu/h max.

PF2 Heat Profile 2 400 to 1100CFM; 77,000 Btu/h max.
PF3

SCL 30-100 60

ECL 30-100 60
SCH 30-100 60
ECH 30-100 60
SOL 30-100 100
EOL 30-100 100
SOH 30-100 100
EOH 30-100 100

When Run is displayed, controller is in ‘Prog’ mode. Arrow up or down to scroll

through menus

ON

PF1

HRV Mode – Continuous Ventilation. HRV will exchange air at low ventilation
rate during a call for forced air heat (W1 or W2) or continuous circulation (G).
Will increase to high ventilation rate with a high ventilation call (24vac @ DH)

Heat Profile 3 400 to 1200CFM; 105,000 Btu/h max.

HRV Balancing – (see HRV section for more details)

Determines the anticipated supply plenum size. For units with the 20x16” Supply
Plenum, set to 1. For units with the 22.5x18.5” Supply Plenum, set to 2.

To start the control operation, you must return to RUN on the menu, and press Function. Normal
operation will begin. Controller will return to RUN mode if no button is pressed for 2 minutes.

35

Matrix Installation and Operation Instructions

9.3 Outdoor Sensor Operation

The outdoor sensor is connected to the terminal board on the left side of the matrix. The two terminals are labeled ‘OUTDOOR
SENSOR’.

When the Outdoor sensor is not used, or the outdoor temperature is below 0°F, the Matrix operates at a boiler water temperature
equal to the HYD or HI setpoint during a call for Hydronic or Emergency Heat respectively. When the sensor is used and the
outdoor temperature is above 0°F, the Matrix boiler control automatically reduces the operating temperature of the boiler during
those calls. Using the following formula, the control factors in the current outdoor temperature, control setpoint (HYD or HI), and
the RES (reset) setpoint, in determining the appropriate operating water temperature.

Figure 9.2 Outdoor Reset Calculation

Formula:
Operating Temperature = {(RES – Outdoor Temp) x (HYD – RES) / RES} + RES

Note: Substitute HYD for HI during a call for Emergency Heat.

Example:

• There is a call for Hydronic he at; therefore the control uses the HYD programmed
setting.

• The HYD is programm ed to be 160°F.

• The RES is programmed to be 85°F.

• The outdoor temperature is 40°F.

Operating Temperature = {(85 – 40) x (160 – 85) / 85} + 85 = 125°F
The following chart illustrates the effect of changing outdoor temperature on the boiler operating

temperature for the above example.

Reset Curve for Res=85 & Setpoint=160

170

150

130

110

90

Water Temp. (F)

70

-10 0 10 20 30 40 50 60 70 80 90 100

Outdo or T e mperature ( deg .F)

36

Matrix Installation and Operation Instructions

10.0 MATRIX BLOWER OPERATION

10.1 Forced Air Heating

The Matrix forced-air heating module is a step-modulated system, which provides varying heat output rates by adjusting air flow
and water temperature through a fan coil.

Table 10.1 Fancoil Output Chart

Heat Profile 1 (PF1) Heat Profile 2 (PF2) Heat Profile 3 (PF3)

Heating

Stage

1 400 108
2 550 110
3 670 113
4 720 117
5 760 120
6 810 124
7 860 127
8 900 130
9 950 133

10 1000 136

CFM

Set Point

(°F)

Air Temp

(°F)

Btu/Hr Out CFM

104 14000
104 19000
105 24000
108 27700
110 31400
112 35100
114 38800
115 42500
117 46300
118 50000

Set Point

(°F)
400 108
550 110
670 113
730 122
790 131
850 138
910 145
970 152

1030 158
1100 164

Air Temp

(°F)

104
104
105
112

Btu/Hr Out CFM

14000 400 108 104 14000
19000 550 110 104 19000
24000 670 113 105 24000
31500 750 128 116 35500

Set Point

(°F)

Air Temp

(°F)

Btu/Hr Out

118 39100 820 141 125 47100
122 46700 900 152 132 58700
127 54200 975 163 139 70200
131 61800 1050 172 144 81800
134 69400 1120 181 149 93400
137 77000 1200 190 153 105000

what is shown

Actual Output rates may vary from

Example. At stage 4 (Profile 1) the Matrix provides 720 CFM across the fan coil, which is receiving 117°F water from the boiler. The
coil then supplies plenum air at 108° F or ~27700 BTU/hr.

On an initial thermostat call (24VAC @ W1), space heating begins by providing heat at Stage 3 (~24,000 BTU/hr) (if hydronic heat
is also calling (24VAC @ H) heating will begin at stage 1) and so long as the thermostat is not satisfied, incrementally increases to
a maximum of Stage 10 (maximum output). When the thermostat becomes satisfied, an average of the heat output rate during the
call is calculated. The boiler remains lit and the space heat output begins an incremental decrease in heat output rate beginning with
the stage just below the calculated average and ending with either the thermostat re-calling or if the thermostat never re-calls, the
output rate decreases to minimum stage after which the boiler shuts off.

If the thermostat re-calls prior to the minimum heat stage, a new calculated average of the thermostat off cycle is calculated and the
boiler again begins an increasing ramp, only this time it begins at the calculated stage and not necessarily at the minimum stage.

This computation “hunts” for the heat loss of the dwelling based on the reaction of the thermostat to the rise and fall of the space
temperature and the heat cycle rate of the thermostat.

If at any time the plenum temperature exceeds 160°F, the boiler will stop supplying heat until the temperature in the supply plenum
drops below 140ºF, during which time an AL2 error message will be displayed.

ATTENTION

The burner will remain on and the Matrix will provide heat when the thermostat is off. This is normal and is
required to provide constant efficient heat.

37

Matrix Installation and Operation Instructions

y

Call for Heat (24VAC @ W1): Normal Thermostat call, Matrix operates as a step-modulating furnace as described above. If

HRV set to ‘ON’, HRV will operate at the low (continuous) ventilation rate.

Call for Auxiliary Heat (24 VAC @ W2):

When calling, furnace will provide heat at a stage 10 output rate. With a call for

auxiliary heating the Matrix will function as a single stage, full fire appliance. This means the burner will come on with a
thermostat call and go off when the call is satisfied. If HRV set to ‘ON’, HRV will operate at the low (continuous) ventilation rate.

Outdoor Sensor:

function is not used for W1 heating.

The auxiliary heating function (24VAC @ W2) will utilize the outdoor sensor if available. The outdoor reset

This function is also active during a hydronic heat demand (24VAC @ H).

Plenum Sensor: The Matrix is equipped with a plenum temperature sensor that must be field installed in the supply plenum and

wired to the furnaces external terminal strip. When installed the Matrix fan control displays the plenum temperature and will use it
to detect problems in the supply of heat to the space.

Call for Circulating Fan (24VAC @ G)

in the Fan (blue) controller (400-1600 CFM)
(Continuous) ventilation rate.

: Matrix operates at the programmed air circulation rate according to the “FAN” setting

. If HRV is set to ‘ON’ (See 8.2 Fan Controller), the HRV will ventilate at the low

Call for Dehumidification (24VAC @ DH)

: Matrix operates at the minimum air circulation rate (400 CFM). HRV will

ventilate at the high (Override) ventilation rate.

Call for Cooling Fan (24VAC @ Y1):

Matrix operates at the prescribed air circulation rate (Y1x10 CFM – See 8.2 Fan
Control). HRV will not operate during a call for cooling unless there is a concurrent call for DH – Dehumidification or G –
Continuous and HRV is set to ON.

Call for Cooling Fan (24VAC @ Y2):

Matrix operates at the prescribed air circulation rate (Y2x10 CFM – See 8.2 Fan
Control). HRV will not operate during a call for cooling unless there is a concurrent call for DH – Dehumidification or G –
Continuous and HRV is set to ON.

10.2 Duct Sizing

When sizing ductwork, a maximum flow velocity of 800 fpm is
desired. Table 11 shows common duct sizes at specified flows. The
maximum flows that can be expected are shown in Table 10.3. It is
important to maintain the return plenum pressure as low as possible.
Keeping this ductwork as free flowing as possible will offer more
supply static pressure to overcome A/C coils, closed registers etc while
maintaining constant flow.

Any additional filtration, humidification, or de-humidification
equipment should be installed external to the return or supply ducts so

not to create additional restriction.

Airflow

(CFM)

1600 2 24x12 20x16
1200 1.5 24x10 20x12 18x12
1000 1.25 20x10 18x10 16x12

800 1 18x8 16x10 12x12

Area

(sqft)

Based on 800 fpm max airflow velocit

Duct Sizing

(inches)

Table 10.3 Maximum Air Flow Rates

Fan Control Setting

Heating

(HEA)

160 max .35 inwg 1600
160 max .6 inwg 1500
160 max .75 inwg 1400
120 (3 Ton) 1200

80 (2 Ton) 800
PF3 No Cooling <1 inwg 1200
PF2 No Cooling <1 inwg 1100
PF1 No Cooling <1 inwg 1000

Example #1

profile of PF2 selected. Maximum airflow will be
1100 CFM.

Example #2 Cooling set to 800 CFM for 2 tons of

cooling with Heating profile of PF3 selected.
Maximum airflow will be greater of cooling or heating
function. Maximum 1200 CFM.

*Measured from return plenum to supply plenum prior to A/C coil.
ECM motor can produce near constant flow provided horsepower or
maximum speed of motor is not exceeded.

Cooling

(COO)

No cooling function with Heating

ESPmax* CFM

38

Matrix Installation and Operation Instructions

11.0 HEAT RECOVERY VENTILATION

11.1 Ventilation Needs

With the evolution toward more energy efficient, tighter homes, air quality problems have increased. With less natural ventilation
pollutants such as pet dander, humidity, tobacco smoke and wood ash now become trapped inside the home. Mechanical
ventilation is the process of exhausting the polluted air from the space and replacing it with fresh air from outside. The amount of
ventilation required varies from home to home and can be estimated using one of the following methods:

11.1.1 Room Count Calculation
Living Space

Master Bedroom x 20 cfm (10 L/s) =

With Basement x 20 cfm (10 L/s) =

Without

Basement

Single Bedroom x 10 cfm (5 L/s) =

Living Room x 10 cfm (5 L/s) =
Dining Room x 10 cfm (5 L/s) =
Family Room x 10 cfm (5 L/s) =

Recreational

Room

Other

Kitchen x 10 cfm (5 L/s) =

Bathroom x 10 cfm (5 L/s) =

Laundry Room x 10 cfm (5 L/s) =

Utility Room x 10 cfm (5 L/s) =

Total Ventilation Requirement (sum last column) =

Number of

Rooms

x 10 cfm (5 L/s) =

CFM (L/S) CFM Req'd

11.1.2 Air Change per Hour Method

Total cu.ft x 0.3 / 60 = Total Ventilation Required

Example. A 25’ x 40’ house with basement

1000 sqft x 8’ high x 2(main floor and basement) = 16,000 cu.ft
16,000 x .3 air changes per hour = 4,800 cu.ft/hr
4,800 cu.ft/hr / 60 = 80 cfm
80 cfm is ventilation requirement

39

Matrix Installation and Operation Instructions

r

y

11.2 Types of Installation

There are two basic methods of installing the ventilator in the Matrix:

Exhaust at the source. Stale air is drawn from the kitchen and bathrooms.

External Ducting to be 6”

Warm Air

Supply

Cold Air

Return

Stale Air From

Kitchen and

Bathroom

insulated with Vapor Barrier

6’-0” min

18” min

Exhaust from the return (Simplified System). Stale air is drawn from the return plenum.

Warm Air

Cold Air

Return

Stale Air From

Cold Air Return

(Connection to be 4ft from

where return plenum attaches

to Matrix)

Suppl

External Ducting to be 6”

insulated with Vapor Barrie

6’-0” min

18” min

40

Matrix Installation and Operation Instructions

IMPORTANT

When using the Simplified System method, exhaust connection to the return must be 4’ from where the
return connects to the Matrix.

IMPORTANT

All main HRV ductwork to be 6” round.
Exterior connections are to be insulated and include a vapor barrier.

11.3 Damper Box

Included in the installation kit is a damper box. This
damper box eliminates the infiltration of cold outside
air when the HRV is off or in defrost mode. It is to
be installed with the actuator on the top side and
screw to the Matrix using the four screws provided.

11.4 Condensate Drain

Condensation from defrost will collect in the
ventilator and drain from the sloped drain pan.
This condensation must be evacuated from the
unit. The condensate tubing provided must be
routed through the hole in the side of the
appliance and attached to the 90° elbow directly
underneath the ventilation module. From there
the condensate tube must be emptied into a
suitable floor drain or if necessary the emptying
drain must have a trap to prevent the infiltration
of toxic gases.

Damper Box with Collar Installed

This End to Appropriate

41

Attach End of Supplied Tubing to

Matrix Installation and Operation Instructions

11.5 HRV Balancing

The HRV must be balance properly in order to operate at maximum efficiency and avoid problems.

The balancing process ensures the volume of fresh air from outside is equal to the amount of stale air being expelled from the home
over all air handler conditions. A variation of 10% is acceptable with the greater volume being stale air drawn from the home.

The Matrix uses motor speed to balance airflows. This method of balancing provides quieter operation and reduced energy
consumption over the traditional balancing damper approach.

Flow is measured with the use of a Magnehelic (0-.25 inwg range) and an airflow grid, flow collar or “Flow Measuring Station”.
NTI offers an airflow grid, PN: 83554, that is designed to be installed in a 1” hole located in a 6” duct. It is important that the flow
grid be the same size as the ductwork, and be installed according to the manufacturers instructions. Typically a straight run of 18”
on either side of the flow grid is adequate to avoid false readings. It is helpful if a flow grid is installed in each of the supply and
exhaust ducts.

Procedure:

1. Attach the upflow port of the flow grid to the positive pressure port of the Magnehelic and the down flow port to the negative

port.

2. Zero the Magnehelic.

3. Begin by selecting the heating profile required in the Matrix Fan Controller ‘HEA’ menu. Refer to the heating section of the

manual for more explanation. The heating profile selected dictates the air handler blower speeds and is important to the proper
functioning of the HRV. Every time the heating profile is changed the HRV will require re-balancing.

4. Once the heating profile is selected, advance to the ‘BAL’ menu. By pressing the ‘FUNCTION’ button you will enter the

balancing mode of the HRV. Press the up arrow button and advance through the menus until you reach the ‘EOH’ menu item.
By pressing the ‘FUNCTION’ button you will enter the ‘EOH’ menu. A number will appear. You will notice the HRV start, if
it is not already running, and the main blower of the air handle will come up to speed. The number on the display represents
the speed of the HRV fan in percentage. In the case of ‘EOH’ the number shown represents the speed of the exhaust ‘E’ fan
during a call for high ventilation ‘O’ (override) while the air handler blower is running at the high ‘H’ heating speed. The
maximum speed setting is 100%, the minimum 30%. Adjust the speed up or down until the desired flow rate is achieved.
Table 11.1, on the following page, has been provided to help in explaining the different settings.

5. Complete the table adjusting each of the setting to the HRV Ventilation Rate provided. These rates are a guideline only and

can be adjusted to meet the specific application.

-Note- When adjusting the exhaust speeds, the supply fan will increase to full speed.

When the balancing is complete, the HRV will maintain balance at any ventilation rate during any air handler blower condition.
This is a unique feature of the Matrix and is essential in providing efficient and adequate ventilation in this integrated system.

ATTENTION

The HRV balance must be checked and if necessary rebalanced every time the Heating (HEA) setting is
changed, or if there is change to the system which would significantly change the static pressure at the
return plenum or the exterior ducts to the HRV.

42

Matrix Installation and Operation Instructions

Figure 11.1 Sample Balancing Setup

Stale

Exhaust

Fresh

Supply

6” Flow Measurement Station,
Averaging Pitot Tube, or
Pitot TransferTube

Magnehelic (0-.25 inwg)

or Digital Manometer

Table 11.1 HRV Balancing Table

Menu

Item

EOH
SOH
EOL
SOL
ECH
SCH
ECL
SCL

HRV

Exhaust at Override (high ventilation) rate, balanced during High air

circulation rate (800/1000/1200CFM).
HRV

Supply at Override (high ventilation) rate, balanced during High air

circulation rate (800/1000/1200CFM).
HRV

Exhaust at Override (high ventilation) rate, balanced during Low air

circulation rate (300/400/500CFM).
HRV

Supply at Override (high ventilation) rate, balanced during Low air

circulation rate (300/400/500CFM).
HRV

Exhaust at Continuous (low ventilation) rate, balanced during High air

circulation rate (800/1000/1200CFM).
HRV

Supply at Continuous (low ventilation) rate, balanced during High air

circulation rate (800/1000/1200CFM).
HRV

Exhaust at Continuous (low ventilation) rate, balanced during Low air

circulation rate (300/400/500CFM).
HRV

Supply at Continuous (low ventilation) rate, balanced during Low air

circulation rate (300/400/500CFM).

Description

43

Sample HRV

Ventilation

Rates

120cfm
(55 L/s)
120cfm
(55 L/s)
120cfm
(55 L/s)
120cfm
(55 L/s)

70cfm

(30 L/s)

70cfm

(30 L/s)

70cfm

(30 L/s)

70cfm

(30 L/s)

Installed

Ventilation

Rates

Installed

Fan

Speed

Matrix Installation and Operation Instructions

12.0 LIGHTING BOILER

Before Start-up refer to Mandatory Pre-commissioning Procedure for Plastic Venting in Section 3.0.

Failure to follow these instructions can result in explosions, injury or death.

Prior to turning the gas supply on and lighting the appliance, ensure all aspects of the installation are
complete and in conformance with the instructions provided in this manual, including the Vent/Air­Intake, Condensate Drain, and System Water Piping. Failure to precisely follow these instructions will

cause a fire or explosion resulting in property damage, serious injury or death.

Do not store or use gasoline or other flammable vapors & liquids in the vicinity of this or any other appliance. Failure to follow
instructions could result in explosion causing property damage, serious injury or death.

If you do not follow these instructions exactly, a fire or explosion may result causing property damage,
serious injury or death.

Should overheating occur or the gas supply fail to shut off, turn off the manual gas control valve to the
appliance. Failure to follow instructions could result in explosion causing property damage, serious
injury or death.

FOR YOUR SAFETY, READ BEFORE OPERATING_

A) This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not

try to light the burner by hand.

B) BEFORE OPERATING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is
heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS:

• Do not try to light any appliance.

• Do not touch any electric switch.

• Do not use any phone in your building.

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

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

C) Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand,
don't try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

D) Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the
appliance and to replace any part of the control system and any gas control which has been under water.

OPERATING INSTRUCTIONS_

1. STOP! Read the safety information above very carefully.

2. Set the thermostat to lowest setting. Turn off all electric power to the appliance.

3. This appliance does not have a pilot. It is equipped with an ignition device which automatically lights the burner. Do not

try to light the burner by hand.

4. Turn the manual gas valve to the OFF position. Remove front access panel.

5. Wait five (5) minutes to clear out any gas. Then smell for gas, including near the floor. If you smell gas, STOP! Follow

“B” in the safety information above. If you don't smell gas, go to the next step.

6. Turn the manual gas valve ON. Wait an additional five (5) minutes smelling for gas.

7. Replace the front access panel.

8. Set thermostat to highest setting. Turn on all electric power to the appliance.

9. Ignition sequence is automatic. Combustion will occur after a brief fan purge.

10. If ignition does not occur, follow the instructions “To Turn Off Gas To Appliance” and call your service technician or gas

supplier.

TO TURN OFF GAS TO THE APPLIANCE_

1. STOP! Read the safety information above very carefully.

2. Turn off all electric power to the appliance

3. Turn the manual gas valve to the OFF position

44

Matrix Installation and Operation Instructions

The initial lighting of the appliance must be performed by a licensed Gas Technician. Failure to follow
instructions may result in property damage, serious injury or death.

• Ensure the appliance is wired in accordance with this manual.

• Ensure the gas shut-off valve is turned on, and that the gas system has been fully tested for leaks.

• Ensure the system is completely filled with water, and that ALL the air is purged out.

Allow primers/cements to cure for 8 hours prior to Start-up. If curing time is less than 8 hours, first

perform Steps 2 through 6 of Mandatory Pre-commissioning Procedure for Plastic Venting in Section

3.0. Failure to follow these instructions can result in explosion, serious injury or death.

Initial Start-Up

1. Turn on power to the Trinity Lx and turn-up the Thermostat(s). The appliance should run through a purge, and combustion

should occur. (The control system has a built in ignition retry, allowing the system to try at least three times, before locking­out.)

2. With the unit operating at full capacity, verify that the gas line pressure is 4-10.5 inches w.c. for Natural gas, and 9-13 inches

w.c. for Propane (See Section 5.0 for details).

3. Using an appropriate Oxygen or Carbon Dioxide analyzer, take a sample of the flue gas. The sample must fall within the

acceptable ranges for Carbon Dioxide, which is 8.5% - 9.5% for Natural gas, and 9.5%-10.5% for propane (See Section 5.0
for details).

4. Perform at least three lights in succession to ensure proper operation.

5. After the three successive lights, unplug the flame probe, and allow the unit to cycle again. Ensure that it tries to light, and

locks out on safety reset. Once you have successfully activated the flame safety system, replace the wire on the flame sensor,
and reconfirm proper lighting.

If the unit fails to light consistently and smoothly, contact NTI for assistance at 1-800-688-2575. Never
allow the appliance to continue to operate if the ignition or operation of the burner is rough or erratic.
Failure to follow these instructions could result in serious injury or death.

Re-lighting Unit

1. Stop and read these instructions very carefully.

2. Set the thermostat to the lowest setting, and then turn off all power to the appliance.

3. This appliance does not have a pilot. It is equipped with an ignition device that automatically lights the burner. Do not try to

light the burner by hand.

4. Turn the gas shut-off valve to the off position, and then remove the front cover.

5. Wait five (5) minutes to clear out any gas. Then check for gas, including near the floor. If you smell gas “Stop” and follow

“B” above. If you don’t detect any gas proceed to the next step.

6. Turn the gas shut-off valve to the on position, wait an addition five (5) minutes and check for gas.

7. Replace the front cover.

8. Set the thermostat to the highest setting, and then turn on all power to the appliance.

9. Ignition sequence is automatic, combustion will occur after a brief fan purge. Ignition will retry 3 times.

10. If ignition does not occur, “Turn off the gas and electricity to the appliance” and contact a professional service technician, or

gas supplier.

Turning Off The Appliance

1. Set the thermostat to the lowest setting, and then turn off all power to the appliance.

2. Turn the gas shut-off valve to the off position.

45

Matrix Installation and Operation Instructions

13.0 TROUBLE SHOOTING

This section is intended to assist the service technician in detecting and correcting common errors. The Matrix Boiler and Fan
Controls are equipped with an internal diagnostic system that verifies control operation. The following series of error codes has
been developed to aid in diagnosing control problems:

Symptom Detected Problem Solution

1. If the boiler is extremely hot check for adequate water pressure and
circulation, contact NTI for assistance.

2. If not hot, check for sources of grounding or shorting at the Water Sensor
electrical connections, check wiring from Sensor to Boiler (Red) Control.

3. Replace Water Sensor if the resistance is not in the correct range. (See
thermister resistance charts in Figures 13.1 and 13.2)

See ER1

1. Check wiring to Water Sensor for open circuits or shorting to ground. (Note:
ER3 will be displayed if temperature sensed is less then 0°F.)

2. Replace Water Sensor if the resistance is not in the correct range. (See

thermister resistance charts in Figures 13.1 and 13.2)

1. Reset power, if error goes away the problem is intermittent and was likely
caused by a tripped limit that has automatically reset, check for adequate
water pressure and flow rate. Allow the boiler to cycle and verify proper
operation including outlet water temperature and flue temperature. If
operation is unsuccessful and the error reoccurs:

2. Matrix boilers are equipped with a low water pressure switch on the boiler
return that requires a minimum of 10PSI to complete the 24VAC ignition
circuit. Ensure the field-installed pressure gauge is reading a minimum of
12PSI. Replace water pressure switch if plumbing and pressure is correct
and if it measures an open circuit.

3. Check for continuity through the 24VAC limit wiring and manifold and stack
limits, replace limits or wiring that are not a closed circuit.

There is a problem in the ignition sequence; it could be caused by a faulty igniter,
flame sensor, gas valve or improper line pressure or combustion. Check ignition
sequence to determine which component is not functioning. (Control will retry

ignition sequence 1 hour after ER6 code originally occurs or if control is reset)

Indicates that the Controller has lost communication with an internal processor,
contact NTI.

1. Ensure the vinyl tubes, connected between the air switch and the ports on
the inlet pipe, are in the proper locations. Negative side of switch connects
to the port on the 1-1/2” PVC elbow.

2. Check for blockage on the intake and exhaust vents.

3. If fan is running the air switch may be faulty, ensure it is set at 0.2”wc.

4. If fan is not running, check 120V wiring to blower, if ok remove low voltage
harness from blower, if blower fails to start, replace blower, if blower does
start the problem may be with blower or Controller.

1. Does the combustion fan run continuously at full speed while the error is
displayed? If so check for 24V from transformer, also check transformer
fuse. If 24V is present check the low voltage wiring from Controller to
combustion blower, replace Controller or Blower.

2. Is the combustion fan off? If so check for water in the air switch and air
switch tubes, replace switch if necessary.

3. Check venting termination with required venting described in manual.

Contact NTI.

1. Check for 120V between terminals L1 and L2.

2. If 120V exists turn power off and remove line voltage harness from Control.
Then check for resistance between L1 and L2 of control, if the circuit is open
(O.L) the internal fuse has blown. Check for shorts in wires leading to
circulator prior to replacing controller. (Note: If fuse is good the circuit will
read between 300 and 400 Ohms.)

3. If 120V not present, check wiring and for 120V at source.

ER1

ER2

ER3

ER4

ER6

ER9 Internal Controller Fault

Boiler Control (Red Face)

ASO

Air Switch

Open

ASC

Air Switch

Closed

Controller

Locks-up

Display Goes

Blank

“Water Temperature Excessive”

Sentry has sensed a water

temperature in excess of 250ºF at

the Water Sensor.

“Water Sensor Short Circuit”

Control has sensed a short circuit

in the Water Sensor circuit.

“Water Sensor Open Circuit”

Control has sensed an open circuit

in the Water Sensor circuit.

“24V Limit Error”

Control has sensed a lack of 24V

on the outlet of the burner relay

(B1). Lockout lasts for one hour

before automatically resetting.

“Flame Lock Out”

Control has sensed a lack of 24V
to the gas valve during operation

or a Fenwal ignition lockout.

This is displayed when the boiler is

expecting the air switch to be

closed by a differential pressure

generated when the combustion

blower turns on. It can occur

momentarily during normal

operation. A problem is indicated

when ASO is displayed

continuously.

This is displayed when the boiler

has turned the blower off and is

expecting the air switch to be

open. It can occur momentarily

during normal operation. A

problem is indicated when ASC is

displayed continuously.

Excessive noise, current, or

voltage spikes in the 120V power

supply.

No power to control or control

failure

46

Matrix Installation and Operation Instructions

Symptom Detected Problem Solution

AL1 Communication Error with HRV

AL2

AL5

AL7

Fan Controller (Blue Face)

AL8

(& Blower Off)

AL8

(& Blower On)

F3.5 Flashing Lack of 24 V at fan controller

Two Flashes

on Fenwal

Three

Fenwal

Flashes on

Fenwal

Plenum Temperature Limit of

160ºF Exceeded

“DHW Time-Out”

The Control has locked out DHW
due to the demand lasting longer

than 2.5 hours.

‘Boiler Control Error’

Fan controller has failed to receive

run status from Boiler Control.

‘Furnace Blower Error’

Blower has failed to meet a

minimum speed.

‘Furnace Blower Error’

Control has failed to sense that the

blower has reached a minimum

speed.

The Fenwal controller thinks that

there is a flame prior to ignition.

Indicates Ignition Lockout.

“Ignition Lockout”

1. Check wiring connections between HRV and Fan Controller.

2. Check door switch on HRV.

3. Cycle power to appliance; contact NTI.

1. If plenum is hot, check operation of blower fan; contact NTI.

2. If plenum is not hot, check plenum sensor and wiring for shorts or damage.

3. Remove plenum sensor, PSO should be displayed, if so replace plenum
sensor, if not inspect wiring from Terminal Strip to Fan Control. Replace Fan
Control if necessary.

1. Reset the AL5 error by resetting the power or cycling the DHW call. Check
for proper operation of the DHW call.

2. Matrix units are provided with an integrated DHW flow meter, if the control is

registering a flow rate when the water is turned off; disconnect the electrical
lead to the flow meter. If the indicated flow rate drops to 0, replace flow
meter, if not, replace fan controller.

3. Ensure nothing is connected to the FS terminal of the terminal strip (unless

using a DHW tank aqua-stat to trigger a demand – check operation of aqua­stat).

1. Check for error code on Boiler Control.

2. Check control wiring from Boiler Control to Fan Control (Pins 17 and 18 on
Fan Control – See wiring schematic in Section 8.2).

1. Check for 120V to blower; ensure door switches are making the circuit.

2. Check wiring from Pin 6 at Fan Control (white wire) to Pin 15 at blower
motor.

3. Check for 24VDC at blower Pin 15, if present replace blower, if not replace
Fan Control.

1. Check wiring from Pin 5 at Fan Control (black wire), to Pin 16 at blower
motor.

2. Check for 3-5VDC at blower Pin 16, if present replace blower, if not replace
Fan Control.

1. Check/Replace 2A fuse – blown fuse indicates 24V supply shorted to
ground, or excessive load.

If the combustion sequence is normal, and there is no flame prior to ignition, the
Fenwal control is defective, and must be replaced.

If the condensate drain gets blocked, the boiler will become flooded and terminate
operation as the flame rod becomes immersed. This will damage the flame probe.
To correct, free the drain blockage, and permanently prevent it from reoccurring.
Remove and dry off the probe. Reinstall the probe and try for ignition, if it fails to
stay lit, leave the fan run for up to three hours to dry out the insulation and probe.

1. Reset Boiler so it will attempt to ignite.

2. Check for proper operation of ignition components. Make sure igniter glows
and gas valve opens.

3. Check for proper line pressure at gas valve when it opens.

4. If boiler lights check for flame signal between FC1 and FC2 on Fenwal
control (If lower then 1.2 DC µAmps see “Boiler will not stay lit”).

5. Check combustion properties.

47

Matrix Installation and Operation Instructions

Symptom Detected Problem Solution

Boiler will

not stay lit

Boiler bangs

or hisses

General

Boiler Lights

rough or
pulsates

Fan appears

to be

creating a

noise in the

house

1. If the Burner light on the Burner (Red) Control is going out, go to “

Indicates lack of a flame signal. In

order to stay running the flame

.

signal must be at least 0.7 µAmps

Bangs or sounds like a kettle while

burner is running indicates

insufficient flow

Typically an imbalance in the Air to

Slight vibration can cause noise in

(This is not a warranty issue)

Making a rubbing noise. ((This is

gas ratio

the residence

not a warranty issue))

shutting off

2. Check condensate drain for blockage and check the inlet piping for ingested
snow or water (if the flame rod gets wet, it may need to be replaced). Check
for resistance from flame rod to ground, must be an open circuit (O.L), if not,
remove rod and bend it away from the burner slightly.

3. Check for proper polarity of line and neutral wiring to the boiler.

1. Ensure the plumbing is as shown in manual. Check to see if pumps are
operating properly and water pressure is above 15psi.

lead to boiler overheating!

2. Boiler may be plugging with scale or magnetite, clean with Fernox DS-40
Descaler and Cleanser (NTI PN: 83450).

3. If glycol is being used the concentration may be to high, recommend using a
concentration lower then 35%.

1. Ensure that the venting lengths are in compliance with Section 3.4

2. Ensure that the line pressure during operation does not drop more than 20%
from the static line pressure.

3. Momentarily remove the intake vent from the boiler during ignition, if unit
lights smoothly with intake vent disconnected reconnect and check for proper
combustion if unit maintains smooth operation after ignition. (See Section

5.2) Calibrate for proper combustion. If problem persists contact NY
Thermal.

4. Heat exchanger may be dirty, remove burner door and inspect, clean if
necessary.

1. Use flexible gas line to insolate the vibration noises between the gas valve
and the line.

2. Don’t hang gas lines from floor joists.

3. Use rubber insulators with gas line supports.

1. If gas valve is not held when the gas nipple is connected, the force of
tightening the fitting can damage the valve, and warp the fan housing.

2. If pipe is used, the gas line must not create any forces to the valve, either
vertically (weight of line), or horizontally (misaligned connection)

”.

This problem can

Burner

The following are the thermistor curves for diagnosing the water and outdoor air sensors:
Measure the resistance of the thermistor when disconnected.
Using the appropriate chart, find the resistance and move either vertical (water probe) or horizontal (air probe) until the line is
intersected.
Move 90 degrees to the corresponding temperature.
If the temperature is plus or minus 10 degrees, then the probe is operating correctly.

48

Matrix Installation and Operation Instructions

Figure 13.1 Matrix Thermistor Resistance Chart

1 Mohm Water Probe (Low Temp.)

2.25
2

1.75

1.5

1.25
1

0.75

0.5

Resistance (Mega Ohms)

0.25
0

50 60 70 80 90 100 110 120 130 140

Water Temperature (

Figure 13.2 M atrix Thermistor Resistance Chart

1 Mohm Water Probe (Hi Temp.)

o

F)

120
100

80
60
40
20

Resistance (Kilo Ohms)

0

160 170 180 190 200 210 220 230

Figure 13.3 Outdoor 10K probe

100

80
60

40
20

Resistance (Kilo Ohms)

0

100 75 50 25 0

Water Tem perature (

Temperature (F)

o

F)

49

Matrix Installation and Operation Instructions

14.0 SEQUENCE OF OPERATION

Figure 14.1 Matrix Boiler Control Sequence Of Operation

Error

A S C

VDC Signal
to Combustion
Blower

Error

A S O

120v Power

Applied

Closed

N/O

Open

Displays ve r sion

b1.0

Furnace Control

closes T-C circ uit.

Forced Air Dem and

Open

Closed

Boiler in

standby mode

Awaiting Input

From Furnace Control

at Contacts A- C -T

Furnace Control closes
A-C and T-C circuit.

Hydronic Demand

Energizes Internal

Circulat or (C 1)

Sentry 2100

Sentry 2100

Sentry 2100

Combustion Blower

Starts, SFS (80)

Furn ac e Control
closes A -C circuit.

Water Temperature Limit

Flue Gas Temperature Limit

Water Pressure Limit

DHW Demand

`

Sentry 2100

24 V

&
&

Check

24 V

Igniter warm-up

5 seconds

Sentry 2100

modulates combustion

blower based upon setpoint

and programing

Call for flame ends

50

Power to Ignitor

120V to S1

Power to Gas Valve

Prepurge

Checks Flame

Probe Signal

Greater than 1.0 uAmp

Three
Retries
for Flame

Less than

0.6 uAmp

Matrix Installation and Operation Instructions

15.0 INSTALLATION CHECKLIST
Installation

 1. If operating on Propane Gas, convert appliance using kit number 82650-1.

 2. Install the Vent/Air-Intake piping in accordance with Sections 3.0 this manual. Ensure all joints are secured and cemented

properly. Both the Vent and Air-Intake pipes must terminate outdoors. Perform the Mandatory Pre-commissioning
Procedure for Plastic Venting in Section 3.1.

 3. Connect the condensate drain in accordance with Section 4.0 of this manual.
 4. Connect the gas supply in accordance with Section 5.0 of this manual.

 5. Install the plumbing in accordance with the Sections 6.0 and 7.0 of this Manual. Flush/cleanse the internals of the heating

system (hydronic piping of hydronic systems only). Treat system water with Fernox F1 Protector.

 6. Connect field wiring in accordance with Section 8.0 of this manual.
 7. Advise home/building owner of their responsibilities with respect to maintaining the appliance.

The building owner is responsible for keeping the Vent/Air-Intake termination free of snow, ice, or other
potential blockages and for scheduling routine maintenance on the appliance (see Section 16.0). Failure
to properly maintain the appliance may result in serious injury or death.

Start-up

Allow primers/cements to cure for 8 hours prior to Start-up. If curing time is less than 8 hours, first

perform Steps 2 through 6 of Mandatory Pre-commissioning Procedure for Plastic Venting in Section

3.0. Failure to follow these instructions can result in explosion, serious injury or death.

 1. Turn gas shut-off valve to the ON position.
 2. Turn Power on to appliance.
 3. Set Controller to the desired settings.
 4. Turn thermostat up, Ignition will occur.

Operational Checklist

 1. System is free of gas leaks.
 2. System is free of water leaks.
 3. Water pressure is maintained above 15 PSI.
 4. All air is purged from the heating system piping.
 5. Ensure proper water flow rate; unit must not kettle, bang, hiss or flash the water to steam.
 6. Ensure gas line pressure is in accordance with Section 5.0.
 7. System is free of combustion leaks.
 8. Unit must operate smoothly.
 9. Ensure the flue gas combustion readings are within the tolerances listed in Table 5.1.
 10. Each ignition must be smooth.
 11.Verify that all condensate lines are clean and drain freely.

Before Leaving

 1. Remove line pressure gauge from gas valve, tighten bleed screw, test screw for leaks. See Section 11.0.
 2. Install plug into the flue gas test port and test for leaks.
 3. Allow the appliance to complete at least one heating cycle, or to operate for at least 15 minutes.
 4. Always verify proper operation after servicing.

Instructions to Installing Contractor

 1. Ensure that the customer receives the Warranty Documentation included with the installation manual.
 2. Leave the manual with the customer so they know when to call for annual maintenance and inspection.

This appliance must have water flowing through it whenever the burner is firing. Failure to comply may
damage the unit, void the warranty, and cause serious injury or death.

Allowing the appliance to operate with a dirty combustion chamber will adversely affect its operation and
void the warranty. Failure to clean the heat exchanger on a frequency that matches the need of the
application may result in fire, property damage, or death.

51

Matrix Installation and Operation Instructions

16.0 ANNUAL MAINTENANCE AND INSPECTION

This unit must be inspected at the beginning of every heating season by a Qualified Technician.

Annual Inspection Checklist

 1. Lighting is smooth and consistent, and the combustion fan is noise & vibration free.
 2. The condensate freely flows from the unit, and is cleaned of sediment.
 3. Relief Valve and air vents are not weeping.
 4. Low water cut off is flushed (if applicable)
 5. Examine all venting for evidence of leaks. Ensure vent screens are cleaned and clear of debris.
 6. Check the burner plate for signs of leaking.
 7. The combustion chamber must be inspected and cleaned.
 8. Listen for water flow noises indicating a drop in appliance water flow rate.

Important - The hydronic system may need to be flushed to eliminate hard water scale

(Use Fernox DS-40 Descaler, NTI PN: 83450).

Boiler system cleansers and corrosion inhibitors must not be used to flush contaminants from water

heaters or potable water systems.

16.1 Combustion Chamber Cleaning Procedure

Units operating with LP Gas or in an industrial environment will have to be cleaned a minimum of once per year. Other
applications will require the combustion chamber to be cleaned after the first year of operation, with subsequent cleanings
scheduled based on the condition of the combustion chamber at the time. Unless a step is identified as model specific, the
following combustion chamber cleaning procedure is the same for all models.

Crystalline Silica - Read carefully the warnings and handling instructions pertaining to Refractory

Ceramic Fibers before commencing any service work in the combustion chamber. Take all necessary
precautions and use recommended personal protective equipment as required.

 1. Initiate a post-purge cycle to clear any gas from the combustion chamber, then turn gas valve off.
 2. Access the combustion chamber by removing the aluminum burner door assembly of the appliance.

 3. Remove the insulation disc (P/N 83112) located in the back of the combustion chamber to avoid damaging it during the

cleaning process. The disc is held in place with a 2.5mm "Allen-head" screw.

 4. Use a vacuum with a high efficiency filter to remove any loose debris or dust.

 5. Wet the inside of the combustion chamber with water. Use a garden hose with a trigger nozzle to direct pressurized water

through the gaps between the heat exchanger tubes. The water should pass in-between the heat exchanger tubes and exit
via the condensate drain. This process may require the use of some dry rags or plastic to protect electrical components
from being damaged by dripping or spraying water.

 6. Use a nylon or other non-metallic brush to loosen the incrustations and any other contaminates that have remained stuck

on and in-between the tubes.

 7. Repeat steps 5 and 6 until the heat exchanger is clean and water from the condensate drain runs clear.
 8. Re-install the insulation disc (part no. 83112) to the back of the combustion chamber.
 9. Inspect the insulation disc located on the back-side of the burner door (p/n 82769). Replace if damaged.
 10. Re-install the burner door, gas-supply and Air-inlet pipe, check for gas leaks.
 13. Perform the Operational Check List detailed in Section 13.0.

Replace any gaskets or insulation discs that show any signs of damage and do not re-use. Failure to
follow these instructions may result in fire, property damage or death.

52

Matrix Installation and Operation Instructions

Refractory Ceramic Fibers (RFC)

Personal Protective Equipment Recommended - Read the following warnings and handling

instructions carefully before commencing any service work in the combustion chamber. The insulating

material on the inside of the burner door and at the back of the combustion chamber contain Refractory

Ceramic Fibers and should not be handled without personal protective equipment.

Potential Carcinogen - Use of Refractory Ceramic Fibers in high temperature applications (above

o

1000

C) can result in the formation of Crystalline Silica (cristobalite), a respirable silica dust. Repeated

airborne exposure to crystalline silica dust may result in chronic lung infections, acute respiratory
illness, or death. Crystalline silica is listed as a (potential) occupational carcinogen by the following regulatory organizations:

International Agency for Research on Cancer (IARC), Canadian Centre for Occupational Health and Safety (CCOHS),

Occupational Safety and Health Administration (OSHA), and National Institute for Occupational Safety and Health (NIOSH).
Failure to comply with handling instructions in Table 14-1 may result in serious injury or death.

Crystalline Silica - Certain components confined in the combustion chamber may contain this potential

carcinogen. Improper installation, adjustment, alteration, service or maintenance can cause property

damage, serious injury (exposure to hazardous materials) or death. Refer to Table 14-1 for handling
instruction and recommended personal protective equipment. Installation and service must be performed by a qualified installer,
service agency or the gas supplier (who must read and follow the supplied instructions before installing, servicing, or removing
this appliance. This appliance contains materials that have been identified as carcinogenic, or possibly carcinogenic, to humans).

Table 16.1 Handling Instructions for Refractory Ceramic Fibers (RCF)

Reduce the Risk of Exposure Precautions and Recommended Personal Protective Equipment

Avoid contact with skin and eyes

Avoid breathing in silica dust

• Wear long-sleeved clothing, gloves, and safety goggles or glasses.

• Wear a respirator with a N95-rated filter efficiency or better.

1

• Use water to reduce airborne dust levels when cleaning the combustion chamber.

• Do not dry sweep silica dust. Pre-wet or use a vacuum with a high efficiency filter.

Avoid transferring contamination

• When installing or removing RFCs, place the material in a sealable plastic bag.

• Remove contaminated clothing after use. Store in sealable container until cleaned.

• Wash contaminated clothing separately from other laundry.

First Aid Measures

If irritation persists after implementing first aid measures consult a physician.

• Skin - Wash with soap and water.

• Eyes - Do not rub eyes; flush with water immediately.

• Inhalation – Breathe in fresh air; drink water, sneeze or cough to clear irritated

passage ways.

Notes:

1

Respirator recommendations based on CCOHS and OSHA requirements at the time this document was written. Consult

your local regulatory authority regarding current requirements for respirators, personal protective equipment, handling,
and disposal of RCFs.

For more information on Refractory Ceramic Fibers, the risks, recommended handling procedures and acceptable disposal
practices contact the organization(s) listed below:

Canada (CCOHS): Telephone directory listing under

Government Blue Pages Canada—Health and Safety—
Canadian Centre for Occupational Health and Safety; or
website http://www.ccohs.ca.

53

United States (OSHA): Telephone directory listing under

United States Government—Department of Labor—
Occupational Safety and Health Administration; or website
http://www.osha.gov.

Matrix Installation and Operation Instructions

16.2 HRV/Air Handler Maintenance

WARNING

ALWAYS REMOVE POWER (120V) TO THE UNIT PRIOR TO SERVICING.

Once every three months. Replace furnace filter. May be required more frequently in beginning, especially if new construction.

The Matrix HRV module is relatively maintenance free but does require routine cleaning. Table 14 describes the necessary
maintenance.

Table 16.1 HRV Maintenance Items

Heat Recovery Core Annually or as needed

Energy Recovery Core Annually or as needed Vacuum surfaces

Filters

Inside Surfaces of Unit Annually or as needed

Every 3 months or as needed Vacuum Filters

Annually or as needed Replace filters

Vacuum surfaces, let soak in warm water for three hours, spray
rinse and let dry

Clean interior of unit (walls and drain pan) with a mild non-abrasive
soap. It is recommended to use products that are environmentally
friendly

54

Matrix Installation and Operation Instructions

17.0 PARTS LIST

Replacement parts are available from your stocking wholesaler. Homeowners must contact their local Installer or Wholesaler.
Installers or Wholesalers may contact NY Thermal Inc. for assistance at 506-657-6000.

No. P.N. Descri ption

1 82 65 7 P r em ix bu rn er , 13 5. 8

1A 8276 1 P r em ix Burn er Gas k e t

2 83190 Transformer , 24V
3 83083 Matrix Fan Co ntro l

3A 8316 0 M atrix Boiler Control (S en tr y 2100 )

4 82 05 2 Blow e r #RG 1 30

5 82054 Gas Valve (CVI ) VK8115F1134B
5A 8 2065 G as Valve 1/2" npt el bow
5B 8 2600 Gas Valve Ve nt co nnection

6 826 62 Air s w i tch H uba @ . 2" wc.

7 83 03 5 Th er mi s ter , 1/ 4 " N PT

8 820 58 Igni t i on Module (Fenwal)

9 827 08 IGNITE R, #601, c/w SS shiel d
10 82 762 Rauscchert Fl ame Rod
11 82 763 Compo sit Flue B ox

11A 82764 Co m posit F l ue Box Gasket
11B 82765 Composi t F l ue Ou tlet Gasket
1 1 C 83291 -3 Flue A dap ter Assem b ly (4.5")

12 82 992 Manifold L imit, 1/4NPT
13 82 596 Heat E xchanger (Canad a)
13 83 012 Hea t Exchanger ( US)
14 82 65 0 LP ori fi ce 5. 20 mm
15 82 660 St ack L imit , 1/4BSP,190F, Dif =30
16 82 76 6 Bl o we r Ou tl et Gas k et
17 823 68 3/ 4 " Water Connection Gasket
18 83 04 2 Cond ensa t e Y Drai n

18A 82913 Siphon Condensate Trap

19 82 76 7 Cast al u mi nu m Bur n er doo r

19A 82769 Cer am i c bu r ne r do or di s c
19B 82770 B urner door gasket

20 82 76 8 Ign i t e r ga s ket
21 82 228 Temperin g valve #AM101-US-1
22 82 77 1 Ex t en de d ai r tu be
23 82 01 1 Pl a t e he at ex c han ge r LA1 43 0
24 83 50 7 Fl o w Me ter
25 82160 3 wa y Valve VU54S2016B, 3/4"
26 82 973 3 way actuator VU844A1003 B

27A 82754 -1 PCB Opto cou pler

28 82054- 1 CV I Venturi 01

28A 82054 -2 CVI Ve n tur i Gaske t

29 82622- 3 Matrix Air Metering A s sembly
30 81027- 1 Outdoor Air Sensor
31 83223- 1 Pressure Switch 1/4"NPT
32 83 112 Divider P late In sulati on (c/w hardware)
33 83 46 2 T e e, Br as s, 1/4"
34 53 035 Furnace Blo wer
35 83 081 ECM Motor
36 82 285 Expansion Tank
37 81 39 6 Cir c . Pum p Gr un df o s UP1 5- 4 2B7
38 833 63 Fin Tu be Coi l 22.5" x 18"
39 83 547 HRV Fan
40 83 548 HRV HV C Board
41 83 549 HRV Filter x 2
42 83 550 HRV Core
43 83 555 HRV Da mper Act uator (24V)

44 83 084 Matrix HRV Assembly
45 83 22 2 Matr i x Pl en u m Sen s or
46 83 20 8 Doo r Sa f et y Swi tc h
47 825 39 A ut o Air Vent, 1/ 8"
48 83 551 6" Double Collar
49 83 552 Keeper fo r 6" Coll ar
50 83 553 HRV Doo r Swi tch

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43

38

41

42

39

34

35

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