NTI Trinity Ti 100, Trinity Ti 150, Trinity Ti 200, Trinity Ti 400 Installation And Operation Instructions Manual

This Boiler must be installed by a licensed and trained Heating
Technician; otherwise the warranty of this unit is void. Failure
to properly install this unit could cause damage to property
and injury to occupants possibly resulting in death.

1.0 SPECIFICATIONS..................................................................................................2

1.1 HIGH ALTITUDE OPERATION ..................................................................................2

2.0 INSTALLATION REQUIREMENTS ...................................................................2

3.0 VENTING.................................................................................................................4

3.1 VENT PIPE MATERIAL............................................................................................4

3.3 VENTING RU LES AN D GUIDELINES .........................................................................7

3.4 VENTING CLEARANCES ..........................................................................................7

4.0 CONDENSATE DRAIN..........................................................................................9

5.0 INSTALLING GAS PIPING...................................................................................9

5.0 INSTALLING GAS PIPING.................................................................................10

5.1 INSTALLATION ......................................................................................................10

5.2 TESTIN G AN D SE T TIN GS ........................................................................................10

6.0 HEATING SYSTEM PIPING...............................................................................12

Trinity Ti

Trinity Ti Boiler Only

VERSION DATE: 1-5-2010

Installation and

Operation Instructions

6.1 PRIMARY LOOP PLUMBIN G...................................................................................13

6.2 SECONDARY LOOP HEATING SYSTEM ..................................................................16

6.2.1 Multiple Zones using Zone Valves.............................................................16

6.2.2 Multiple Zones using Pumps......................................................................16

6.2.3 Multiple Zones with Different Temperatures............................................17

6.3 DOMES TIC COMBI SYSTEM...................................................................................18

7.0 WIRING..................................................................................................................20

7.1 SIMPLIFIED WIRIN G CONNECTIONS ......................................................................21

7.2 ADVANCED WIRING SYSTEMS ..............................................................................22

7.2.1 Multiple 4 wire Zone Valves.......................................................................22

7.2.2 Multiple Zones with Taco Valve controller................................................23

7.2.3 Multiple Zones Pump controller................................................................24

7.2.4 Multiple Temperature Zones with Injection Pumps..................................25

8.0 SENTRY 2100 CONTROLLER ...........................................................................26

9.0 LIGHTING BOILER.............................................................................................30

9.1 INITIAL START-UP.................................................................................................30

9.2 RE-LIGHTING UNIT ...............................................................................................30

9.3 TURN OFF BOILER.................................................................................................30

10.0 TROUBLE SHOOTING......................................................................................31

11.0 SEQUENCE OF OPERATION..........................................................................34

14.0 ANNUAL MAINTENANCE AND INSPECTION............................................36

14.1 COMBUSTION CHAM BER CLEANING...................................................................36

15.0 PARTS LIST.........................................................................................................37

CAUTION:

IT IS THE RESPONSIBIL ITY OF T HE HOMEOW NER TO
KEEP THE VENT TERMINAL CLEAR OF SNOW AND ICE.

1.0 SPEC IFICATIO NS

Description Ti 100 Ti 150 Ti 200 Ti 400

Input (BTUx1000)

Inp ut Ca pa c i ty - Max. / Min.

Output (BTUx1000)

Output Capacity - Max./ Min.

Steady State Efficiency 95% 95% 94% 94%

AFUE Efficiency 95.1%

Venting material CPVC, PVC (See Section 3.1)

Max. Vent lengths Natural Gas

Max. Vent lengths Propane

Weight

Dime ns i ons L- W- D ( Inche s )

Clearance to Combustibles

Natural =100 / 15

Propane= 100 / 15

Natural =92.7 / 13.9

Propane = 92.7/ 13.9

3” @ 105’ Equivalent

Natural =150 / 25

Propane= 145 / 25

Natural =139 / 23.2

Propane = 134 / 23.2

3” @ 105’ Equivalent

3” @ 50’ Equivalent

80 lbs. 80 lbs.

22.5x15.25x14 22.5x15.25x14

Natural = 200 / 25
Propane= 194 / 25

Natural = 185 / 23.2

Propane = 180 / 23.2

110 lbs.

22.5x15.25x17.25

0”

Propane = 370 / 69.5

4” @ 30’ Equivalent
6” @ 65’ Equivalent

Natural = 399 / 75
Propane= 399 / 75

Natural = 370 / 69.5

205 lbs.

23.5x21x36

1.1 High Altitude O per at ion

400

The Trinity boiler is designed to operate to capacity in
installations with 2000 feet of elevation or less. As
elevations higher than 2000 feet have less dense air, the unit

300

is not capable of providing its specified capacity. (See
Chart).

200

In Canada:
De-rate by 5% for altitudes between 2000 and 4500 feet.

Input (Mbh)

100

For altitudes above 4500 feet consult with local authorities.

In USA:
De-rate by 4% for every 1000 feet over 2000 feet.

CAUTION At elevations greater than 2000 feet, the
combustion of the Trinity must be checked with a calibrated

0

0-

3000 4000 5000 6000 7000 8000 9000 10000

2000

Elevation (ft)

Ti150 Ti200 Ti400 Ti100

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 5.2

2.0 INSTALLATION REQUIREMENT S

THIS BOILER MUST HAVE WATER
FLO W ING THROUGH IT WHENEVER
THE BURNER IS ON. FAILURE TO DO
THIS WILL DAMAGE THE UNIT A ND

VOID THE WARRANTY.

Warning

Important: Carbon Monoxide Detectors

The installation of your NY Thermal Trinity gas 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.

ATTENTION: LIQUEFIED PETROLEUM (LP) PROPANE

The Trinity boiler is set to operate with Natural Gas; LP Conve rsion Kit Part No. 82650-1 for Ti100’s, Ti150’s and
Ti200’s, or LP Conversion Kit Part No. 83017-1 for Ti400’s is included with each boiler and must be installed before
operating with Propane.
Liquefied Petroleum ( LP) propane gas is heavier than air; it is imperative tha t your boiler is not installed in a pit or
similar location that wi ll 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

“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. At the time of installation of the side wall horizontal 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”. (Plate include with 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.

(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.

3

2.1 Location

In all cases, the Trinity boiler 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 boiler as close to the termination point as possible.

For prop er and safe i nstall ation ad here to the fol lowing clearances to combust ibles:

3.0 VENTING

The NY Thermal Trinity condensing gas boiler is a high efficiency boiler utilizing induced power venting. Exhaust gases are to be vented
directly outdoors, using the venting methods detailed in this section. Under no conditions may this unit vent gases into a masonry
chimney, unless it is vacant, and utilizes the Trinity approved venting material as illustrated in this section. Installation must comply with
local requirements and with the National Fuel Gas Code, ANSI Z223.1 for U.S. installations or CSA B149.1 for Canadian Installations.

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.

Attaching Vent Piping to Boiler

Boiler Casing=0" Floor=Combustible Flue Pipe: Boxed in or enclosed=2” In free air=0”

Th e f ol lowin g are the min imum clearances for servicing, how ever 24” is recommen ded:

Front = 24” Back = 0" Top = 12" Sides = 12" Bottom = 9" (0” for Ti400)

• It is extremely important for the intake and exhaust piping to be

adapted to the appropriate size immediately upon exiting the boiler cabinet. Ti100-200’s come with a 3”x1-1/2” PVC adapter to
be used to immediately connect to the air intake port of the boiler.

• Ti100-200 exhaust connection is 3” male PVC, use approved cement to connect to venting system.

• Ti400 exhaust connection accepts approved 4” venting material, do no t insert PVC pipe directly into the exhaust connection;

PVC pipe could become deformed by the clamping force of the gear clamp. Only approved CPVC can be inserted into the Ti400
exhaust connection. Note: a 4” long piece of 4” CPVC is provided with the Ti400.

• 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).

Clearances

3” Coupling
Field Provided

Ti100-200:

-3” male PVC
Exhaust Fitting.

3.1 Vent Pipe Mat erial

Exhaust Vent Piping:

• The first 3 feet of the exhaust venting must be readily accessible for inspection.

• In Canada all exhaust pipe, fittings and cement must comply with ULC S636 (ULC S636 PVC pipe is approved for flue gas

temperatures up to 149ºF (65ºC), therefore it can only be used in low temperature applications; systems requiring boiler supply
water temperature greater than 140ºF must use ULC S636 approved CPVC).

• In U.S. exhaust pipe and fittings must comply with ANSI/ASTM D1785 and DF441 for PVC and CPVC, respectively. Cement

and primer must comply with ANSI/ASTM D2564 and F493 for PVC and CPVC respectively.

• Ti100-200

• 3” PVC Sch.40 (See note above for installations in Canada).

• 3” CPVC Sch.40.

• Ti400

• 4 or 6” PVC Sch.40 (See note above for installations in Canada).

• 4 or 6” CPVC Sch.40.

Air Supply Pipe:

• 3” ABS. (Use 4” or 6” for Ti400)

• 3” PVC Sch.40. (Use 4” or 6” for Ti400)

4

scree

aust

aust

p

Apply

3.2 Venting Confi gur at ions

3.2.1 Two-Pipe Vent Termination

The vertical portion of the exhaust
termination does not require
insu latio n, i f le s s tha n 5 fe e t i n total
length

Gas Vent Direct ly Below

18” Min

Keep Free of O bstruct ions 36”

Window

Apply Plate

Coupling and
elbow to be
against wal l

– ½” play is
acceptable

12” Plus Snow allow ance

Example 12+19=31”

Must insert
plastic bird

n

Exhaust

Intake

Out sid e W all”

12” Plus Snow

3.2.2 Concentric Vent Ter minat i on (No longer appr oved f or Canada)

• Ti100-200 Only (Not for use with Ti400)

• NTI part number 82666 (York part number 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.

Plate Here

Gas Vent Directly Below
Keep Free of Obstructions

Support
(Fie ld installed)

18”

4”-12” or greater
than 36”

”

Inlet

Exh

Inlet

48” min.

4” or greater
than 24”

Minimum 12”

lus snow

allowance

36” min.

Note: inlet pipe must always
be connected to the boiler.

Must insert
plastic bird
screen

5

Exh

Must be 1”
from wall

3.2.3 Ti400 Optional Vent Termination Kit

• NTI part number 83236.

• For use with Ti400 only.

• 4” Connections (When venting with 6”, must adapt down at terminal)

• See Installation Manual included in vent terminal kit for further instructions.

Gas Vent Directly Below

Keep Free of Obstruct i ons

3.2.4 Roof Vent i ng

It is permissible to run vent pipe through an existing chimney as long as:

1) The chimney is not being 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.

Window

3' Minimum

12" Plu s Sn ow
Allowance
(Minimum)

Exhaust

Inlet Air

24”

Inlet Air

Note: inlet pipe must
always be connected

to the boiler.

18”

12” Plus
Snow

Roof weat her seal
Flash ing (field supplied)

Support
(Field su pplied)

Exhaust

6

3.3 Venting Rules and G uide lines

1. It is highly recommended that the vent terminal be located where it will not be exposed to normal prevailing winds.

2. Air for combustion must be drawn from outdoors from an area free of dust and contaminants. Combustion air containing chemicals

such as chloride, fluoride, bromine or iodine, will cause corrosion damage of the heat exchanger voiding your NTI warranty. Avoid
drawing combustion air from the vicinity of swimming pools, laundry facilities, workshops, or other areas where the air may contain
chemicals or dust.

3. 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”.

4. The horizontal distance between the inlet and exhaust must be a minimum of 4” center to center. If the horizontal distance between

the inlet and exhaust is more then 12”, increase the vertical separation by the same amount. Example: If horizontal separation is 24”,
a minimum vertical separation of 30” is required (24”-12”=12”), so increase minimum vertical separation by 12”), (18”+12”=30”). If
horizontal distance is greater then 6’, no additional vertical spacing is required. Vertical separation is never required to be greater
then 36”.

5. 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.

6. 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”)

7. Elbows on outside of wall must be no greater than ½” away from the wall.

8. 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.

9. Exhaust vent pipe can be secured to the wall for more rigidity.

10. In all roof applications the discharge must point away from the pitch of the roof.

11. Install adequate flashing where the pipe enters the roof, to prevent water leakage.

12. Install and seal a rain cap over existing chimney openings, in vacant chimney applications.

13. For installations that exit the wall below grade. Excavate site as

shown in figure, to a point below where the pipes are to exit. Ensure

Installing Venting B elow Gr ade

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)

14. 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.

15. It is extremely important that the intake and exhaust piping be

adapted to the appropriate size immediately upon exiting the boiler
cabinet.

16. All interior vent pipe shall be supported a minimum of every 36” (6”-

diameter pipe used with the Ti400, need only be supported every
48”).

17. 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.

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.

7

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).

3.5 Deter mining Vent Lengt hs

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 a Ti100
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.

• For 150 and 200 Models, Propane Gas (LP) maximum vent length cannot exceed 50 equivalent feet.

ModelsizeTypeLength 123456789

Ti100
Ti150-200
Ti150-200

Ti400

3.6 Out door Hor izontal Venting

Vent piping outside the Building is permitted under the following conditions:

1. The maximum length outside the building is 20 feet. (Outdoor length must be included in the overall vent length calculation.)

2. Only 3” pipe can be used for Ti100-200, only

4” pipe can be used for Ti400.

3. All normal termination clearances are

maintained.

4. All exterior exhaust vent pipes are insulated

with 3.5”-ID, ½”-thick, for Ti100-200, or

4.5”-ID, ½”-thick, for Ti400, Closed Cell

Foamed Polyolefin Tubing i.e., “Tundra Seal
Plus” or equivalent.

5. The pipe is supported every 24”

6. The exhaust and inlet are sloped back to the

boiler ½ ” elevation for every foot.

3"NG,LP 105 1009590858075706560
3"Natural 105 1009590858075706560
3" LP 50 45 40 35 30 25 20 15 10 5

Natural

4" 30 25 20 15 10 5
6" 65 60 55 50 45 40 35 30 25 20

& LP

Supports every 24”

Exhaust

Maximum of 20 feet is
permitted for outside a
building using 3” pipe

ONLY.

Insulation

Apply plate here

Gas Vent Directly Below

Keep Free of Obstructions

8

Inlet

12” plus
allowance above
grade

Plus” 3.5” or

4.5”-ID. ½” thick

“Tund ra Seal

4.0 CONDENSAT E 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.

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:

• 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.

• NEVER use copper, steel, or galvanized piping in the construction of the condensate system (condensate is very corrosive and

will wrought most metals).

• When a condensate pump is used or required, select a pump that is designed for residential furnaces.

Fai lure to prope rly connect t he condensate
li ne will cause combustion gases t o en t er t he
room, possibl y causing serio us i njury to

occupants or death.

Warning

Warning:

The condensate drain kit supplied
with each boiler is susceptible to
flooding if the drain hose exiting
the kit is lengthened or inserted
into a drain. If additional length
is required, do not use the drain
kit provided, instead fabricate a
15” trap using tubing suitable for
condensate disposal.

Condensate
Siphon (Factory

installed in Ti400)

White Siphon drainpipe must
terminate above any possible water
line in t he house drain

Condensate
from Boiler

Bottom
Panel

Condensate drainpipe
must not be sealed,
thus allowing
overflow if blocked.

Condensate

Trap & drain

15"min.

9

5.0 INSTALLI NG GAS PIPING

Ti100-200

5.1 Installation

Refer to the current National Fuel Gas Code ANSI
Z223.1/NFPA 54 or CAN/ CG A B149.1 installation codes, and

local codes for gas piping requirements and sizing. Pipe size
running to the unit depends on:

• Length of pipe.

• Number of fittings.

• Type of gas.

• Maximum input requirement of all gas appliances in the

residence.

Insure that:

• 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

• 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.

• The Boiler shall be installed such that the gas ignition

system components are protected from water (dripping,
spraying, rain etc.) during installation and servicing.

• 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.

• 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.

It is highly recommended to use flexible
gas p ipe, the gas valve a nd blower
cannot support the weight of piping. If
piping is used, ensure that the valve
supports NO WEIGHT

Gas va lv e

Gas cock shut
Off Va lve to be
"T" type handle

Ti400

5.2 T esting and sett ings

When running, the line pressure supplying
the unit must be 4-9 inches w.c. for Natural
gas installations and 9-12” for Propane
installations. Ensure that the regulator is
capable of maintaining this pressure under all
operational conditions.

Line pressure should be maintained at 4-9”w.c for Natural Gas and 9-12”w.c for propane while running at maximum rate. Trinity gas
valves are equipped with two bleed ports; one is for the Manifold pressure, and the other is for the Line pressure.

The gas valve is equipped with a throttle/input adjustment screw. The input screw “MUST NEVE R BE ADJ USTE D” without verifying
proper combustion with a calibrated combustion analyzer.

If li ne pressure exceeds ½ P S I (14 inches w.c.)
complet ely disconnect lin e t o gas valve. T his
excessive pre ssure can damage valve,

causi ng a leak resul t ing in fire or explosion .

Warning

10

Setting Combustion

Manifold

Input Screw

Using a calibrated 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 Combustio n - Use the input screw to adjust the

amount of gas available for combustion. Increasing gas
increases CO and CO2. Reducing gas decreases CO and
CO2.

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 CO2 is
reduced to 8% (9% for LP Gas). If the CO is over 140 PPM and the CO2 is less than 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 CO2 at low
fan speed must be at least as high as the CO2 recorded at high fan speed, but not more than 9.5% (10.5% for LP Gas).

Ti100-200 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.

Ti100-200 Models

out

Air In

Gas IN

Line Pressure

(At maximum fan speed, 240 for Ti100-200, and 195 for Ti400)

Natural Propane
Carbon Dioxide CO2 % 8-9.5* 9-10.5*
Carbon Monoxide CO ppm 25-175* 25-175*

NOX ppm
*Note: On colder days CO2 should be closer to the lower number, on
warmer days it should be closer to the higher number. CO should be
highest at the maximum firing rate.

Ti Input Screw Adjustment

Decrease gas
Turn Clockwise

Increase gas
Turn co unte rc lo c kwise

Ti400 Model

Input Screw

Normal Rang e of C o mbus tio n Products

Ti400 Input Screw – Is a geared ball

valve with a 4 to 1 ratio. Adjusting input
screw 4 complete turns will returned the
valve to the original location, 2 turns
from fully open will completely close the
valve. Typical adjustment required is 0­1/4 turns in or out.

Manifold Pressure

Line Pressure

10-50

10-50

11

IF FOR ANY REASON THE INPUT
SCREW IS ADJUSTED, A
“COMBUSTION ANALYZER”
MUST B E USED TO ENSURE SAFE

AND PROPER OPERATION.

6.0 HEATING SYST EM PIPING

Warning / Hard Water

This boiler must have adequate water flowing through it
whenever the burner is on. Failure to do this will damage
the unit and void the warranty. Water with a total hardness
greater then 6 Grains/gallon may result in heat exchanger
failure. Treat with Fernox Protector F1, included in boiler

package (NTI Part Number: 83448).

Warning for all Systems

All 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 for all Systems

The boiler fittings can’t support any weight. Support all of the
plumbing system externally.

Do not apply torque to the boiler fittin gs. Hold the f itting
when installing, otherwise damage to the unit will occur.

Caution: This boiler 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.

IMPORT ANT

1. Understand and follow the plumbing requirements provided in this section.

2. Keep serviceability in mind when installing plumbing around the boiler 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 100-liter (26 US gallon) system.

Caution Th e Trinity i s tested wi th Natural

Gas having a heating value of 1020 BTU per
cubic foot. For areas wi t h lower heating
values, a combustion test is required to obtain

optimum operation.

12

The Trinity boiler comes in two versions, Heating and Combi.
Heating Version – The standard heating version is designed to operate in a hydronic heating system and can operate with an indirect

water heater.
Combi Version – This special version is equipped with internal components to provide hydronic heating and domestic hot water heating.
See Sections 6.1 and 6.3. (Not available on Ti100 & Ti400 Models)

6.1 Primary Loop Plu mb ing

Circulating Pump Due to the Trinity
design, the boiler is more restrictive than a
conventional boiler, thus greater
co nsi d e r atio n must be gi v e n t o the
capabilities of the circulating pump(s) in
the primary-loop (including the Indirect
Hot Wa ter heater loop-pump).

The following is a listing of the
recommended circulators.

Model

100 7’ at 6 GPM 1” 4.5
150 7’ at 6 GPM 1” 6
200 10’ at 8 GPM 1-1/4” 8
400 10’ at 20 GPM 1-1/2” 13

Notes:
*Must use at least minimum pump size specified for Ti150 if installation requires the use of a flow switch.
**The Taco 009 circulator will flow more through the Ti100-150 boilers than the Taco 0010 circulator.
***Recommend using a Taco 0013 for indirect circulator on Ti400.

Relief Valve: A 30PSI Relief Valve is provided with the system, and it is to be mounted as shown in the diagram. Ensure that the
discharge of the pressure relief is piped to a location were steam or water won’t cause personal injury or appliance and property damage.
The Ti100-150ASME and Ti400 have a maximum operating pressure of 80PSI (145PSI on some models, check the ASME plate affixed
to the heat exchanger), therefore a relief valve with a higher relief setting can be used.
Boiler Ve nti ng: Hot water boilers are designed to operate with airless water in the system. An Air Scoop, installed as shown in the
following diagrams, must be installed to remove air as it circulates through the boiler. It is recommended that an additional Air Scoop be
used in the secondary plumbing. If air continues to be a problem an air scrubber must be used (recommend Spirovent # VJR 100TM for
Ti100-150, VJR 125TM for Ti200, and VJR 150TM for Ti400. Use a minimum 1-1/4” primary-loop plumbing with model VJR 125TM
and 1-1/2” primary-loop plumbing with model VJR 150TM).

Restriction

Head Loss

Recommended

Pipe Size

Trinity Head Loss

60
40

20

Feet of Head

0

2 4 6 8 10 12 14 16 18 20 22 24 26 27

Minimum

Flow (us

GPM)

Max. Temp.

Rise

45°F
45°F
45°F
57°F

Ti100-150 Ti200 Ti400

GPM us

Minimum Primary Pump Size

B&G Grundfos Taco

NRF-22* UP 15-58* 008*

PL-30 UP 26-64 009**
PL-36 UP 26-99 0011
PL-36 UP 26-99 0011***

13

Low Water C utoff / Flow Switch:

• Model Ti400 A certified Flow Switch is installed inside the boiler cabinet on the boiler outlet pipe. Check with local authorities

for requirements of additional safety equipment such as a LWCO.

• Models Ti100-200 A certified LWCO or Flow Switch is not provided in the package, however one is to be field installed in any

application where the boiler is located above the radiation or where local authorities require it. NTI recommends installing a
LWCO or flow switch to prevent the boiler from firing without water in the heat exchanger. 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 boiler. Tri-cocks and a

gauge glass are highly recommended.

• NTI recommends against the installation of isolation valves between the LWCO and the boiler.

• Use the normally open contacts of the LWCO to break line voltage before being supplied to the boiler. Circuit is 120 Volts, 12

Amps.

• Contact NTI for proper installation and wiring of a Certified Flow Switch for Trinity Models Ti100-200. NTI recommends

“McDonnell & Miller” flow switch model FS8-W installed in a 1”-diameter line. (See recommended pump chart on previous
page.)

Low Water Cut Off

Break 120V power
supply to Boiler.
Relay must be
capable of switching

120VAC at 12Amps.

NTI

No valves
permitted
between the
boiler and

LWCO

The Trinity boiler is to be used on ly in a Primary / Secondar y pumping system. This is to avoid cycling problems in
systems that have poor f low, or heat ing zones wit h very small capacities. The pr imary loop syste m must be used in
all cases, regardless of t he conf iguration of the secondary system des ign.

Flow: The Trinity boiler must ha ve wat er flow going through the boiler whenev er t he burner is on.
CAUTIO N: DAMAGE WIL L OCCUR IF T HE BOILER IS FI RED WITH NO WATER IN IT, OR REPETIT IVE NO FLOW

OPERATIONS, WHI CH W ILL VO ID THE WARRANT Y.

14

N

Primary Loop For Heating Model

N

A

N

K

A

K J

Quantity and location of shutoff valves, and drains, are

at the discretion of the installed.

Al l pip i ng m u s t

be secured to wall

for support

Primary Boiler loop

M

E

D

C

I

H

L

G

L

B

Primary Loop
For Combi Model Only

(Ti150C & Ti200C models only)

Al l pip i ng

must be

secured to

wall for
support

H

F

E

F

E

Ti 100-150
(

non ASME)

O

Water Supply

Optional Indirect (For installation

with Ti400, Indirect must have less then
16’ of head loss at 13usgpm.)

Insert Secondary-

Loop here.

See pages 16-17

Legend

A- Back flow preventor
B- Fill valve (set at 12 psi)
C- Diaphragm expansion tank
D- Cast Iron Air scoop, for excessive air

use Spirovent (see page 12).

E- Automatic air vent
F- Relief valve (set at 30 psi)
G- Pressure gauge
H- Heating pump (see size

recommendations in Sec.6.1) Wired to
terminals C1 - L2

I- Optional Indirect pump (see

recommendations in Sec.6.1) Wired to

terminals Ap - L2

J- Optional Indirect Water heater
K- Swing check valve.
L- Ball Valve
M- Boiler Drain
N- Boiler inlet connection (warm)
O- Boiler outlet connection (hot)
P- External Combi Manifold #82470-1

Models Ti100-400ASME

Relief valve
location. All

other pip ing is
same as Ti150

E

L

D

P

L

O

O

G

C

B

Quantity and location of shutoff valves, and drains, are

at the discretion of the installer.

Water
Supply

Primary Boiler loop

Insert secondary Loop here.

M

See page16-17

15

p

p

6.2 Secondary Loop Heating System

The following are typical piping systems. It is the responsibility of the installing contractor to determine which system best me e t s t h e
need of the installation. Contractor modifications to these instructions may be required, based upon existing piping and system design.

6.2.1 M ult i ple Zones using Zone Valves

Primary

Loo

Normally closed 4 wire

Zone Valves

6.2.2 M ult i ple Zones using Pump s

Primary

Loo

Max. 12” apart

Zone

1

Max. 12” apart

Pumps sized to each
zones flow and head

requirements

Zone 1

Zone

2

See fi gure

7.2.1 “Multiple 4 wire Zone Valves”

Zone

3

for wiring

7.2.2 “Multiple Zones with Taco Valve
controller

See fi gure

7.2.3 “Multiple Zones using pumps
and pump controller”

Installer may require throttling and check
valves to correctly regulate the system

Zone 2

Zone 3

16

p

6.2.3 M ultiple Zones wit h Di ffer ent Temperatur es

p

p

Using pumps and tempering valves

Primary

Loo

Pumps sized to each
zones flow and head

requirements

Max. 12” apart

Using Injection pumps

Tempering valve

Zone 1

Low Temp.

Zone 2

Med. Temp.

Zone 3

High Temp.

See fi gure

7.2.3 “Multiple Zones using pumps,
and pump controller”

By setting the tempering valves to different
settings, multiple temperatures can be
obtained.

Installer may require throttling and check
valves to correctly regulate the system.

Other conf iguratio ns may work, but under
no circumstances can a mixing valve be
placed in the primary loop as overheating
of the boiler could occur.

Boiler sensor #1

(Hi Temp.)

Injection

Pump

Max. 12”

apart

Max. 12” apart

Mix sensor #1

(Hi Temp.)

Boiler sensor #2

(Lo Temp.)

Primary loo

Injection

Pump

Max. 12”

Max. 12” apart

Mix sensor #2

a

art

Lo Temp.)

See fi gure

7.2.4 “Multiple temperature Zones
using injection pump”

Ins t a l ler ma y req ui re th ro t t ling a n d
check valves to correctly regulate

the system

Loop 1

High

Temp.

Loop Pumps sized to each loops flow and head requirements

Loop 2

Low

Temp.

17

A

Wate

N

Primary Loop For multiple
boilers (Non-Combi’s only)

ote: See page 15 for location of

expansion tank and other
components

Boiler 1

S

R

Boiler 2

R

S

Boiler 3

S

R

Check Valves

Insert secondary

Loop here. See pages16 & 17

Pump 1

Pump 2

Pump 3

6.3 Domestic Combi System

(((OPTIONAL on Ti150 and Ti200 Only)))
"The Trinity Combi is designed for installations where there is a limited DHW demand, such as smaller apartments and condos. In
applications where there is a greater DHW demand we recommend the use of our heating model boiler in conjunction with an Indirect
Water Heater."

The Combi has all the
features of the standard heating version plus;
External Combi Manifold, diverting valve,
plate heat exchanger & flow switch. Note:

The installer is required to install the pump
flange (included in Combi kit) onto the boiler

Note: Locations of plumbing
connections are not be as
shown, refer to labels on
boiler, contact NTI with any

questions.

return pipe prior to installing the boiler; the
bolts must be inserted into the flange prior to
installing the flange.

A

Heating System Supply (hot)

B

Heating System Retur n (cool)

C

Heating & Combi Circulator

D

No elbows within 2” of f low swit ch

E

3 way diverting valve

F

Domest ic Wate r in (Cold )

G

External Combi Manifold #82470-1

H Flow switch MUST be in vertical

position, inlet down.

B

G

D

E

B

AB

A

Boiler

C

C

COMBI Sequence of operation
When water flow greater than .5 GPM passes through
the flow switch, it closes a contact to terminals A-C on

H

H

M

Drain Valves for Cleaning

the Sentry 2100 controller. The boiler is immediately
energized (if not already on), the 3-way diverting valve
moves to the domestic hot water position “A”, and the
circulator is energized. Hot water is circulated through

Check Valve

Mixed Domestic

r

the plate heat exchanger. The flame is modulated to
maintain the “LO” setting on the Sentry control. The

Throttling Valve

Sentry uses the boiler thermister to read the
temperature of the boiler water. Space heating is not
provided during a call for domestic.

F

For the state of Massachusetts

C omb i mus t

Relief
Valve

be field equipped
with 150 PSI
relief valve as
shown (not
provided)

C

H

M

18

To combat delays in domestic hot water delivery, normally associated with on-demand hot water heaters, Trinity Combi boilers are
equipped with an optional “Storage Mode” feature, which when turned on via the Sentry menu, maintains hot domestic water at the plate
heat exchanger for 1 to 24 hours after the latest DHW call ended (Sentry menu option StO is adjustable from OFF to 1 to 24 hours,
factory setting is 4). The feature is not active when turned OFF, when turned on it is interrupted by a DHW or heating demand.

Anti-Scald 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 Ho neyw e ll
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.)

Hard Water Hard water conditions will cause the components of
this appliance to form scale and impede the normal operation of the
unit. Water with hardness higher than 50 ppm Calcium carbonate
must incorporate a “Water Softener” prior to entering the appliance. Plugging of 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.

Cleaning Secespol 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.

Combi Limitations The Trinity Combi produces domestic hot water on demand, therefore the boiler can only provide hot water up to a
rate equal to it’s capacity to burn fuel. The following tables indicate the maximum domestic hot water flow rate at various inlet and outlet
water temperatures.

Procedure for Setting up Domestic Hot Water If the combi boiler 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 boilers capacity to heat it. See the following tables to
determine what flow can be expected at various inlet and outlet water temperatures.

If the Anti-Scald Valve is no t inst alled t o
the Honeywell Sheet SD/IS1 50, and this
manual, operation may supply

SCALDING hot water to the occupants.

Warning

19

Table 1: Ti 150C Fl ow rates (flow rates in usgpm)

110
115
120
125
130
135

Outlet Water (F)

140

Table 2: Ti 200C Fl ow rates (flow rates in usgpm)

110
115
120
125
130
135

Outlet Water (F)

140

To avoid having too much flow at your faucets use the shut off valve after the mixing valve to limit the overall flow of domestic hot
water. Follow these instructions to achieve the best results with your Combi boiler:

1. Open shut off valve fully.

2. Turn the dial on the mixing valve to the desired setting (being careful not to exceed 120˚F or a dial setting greater then 2) and

adjust LO setting accordingly.

3. Create the maximum amount of DHW flow that is likely to occur on a regular basis. (Usually tub faucet, or choose two other

faucets)

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

warmer than the mixed water exiting the mixing valve. Ensure the boiler is firing at the maximum rate, if not increase the LO
setting and repeat this step. (It is beneficial to keep the LO 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

40 45 50 55 60 65 70

5.1 5.5 6.0 6.5 7.2 8.0 9.0

4.8 5.1 5.5 6.0 6.5 7.2 8.0

4.5 4.8 5.1 5.5 6.0 6.5 7.2

4.2 4.5 4.8 5.1 5.5 6.0 6.5

4.0 4.2 4.5 4.8 5.1 5.5 6.0

3.8 4.0 4.2 4.5 4.8 5.1 5.5

3.6 3.8 4.0 4.2 4.5 4.8 5.1

Inlet Water Temperature (deg. F)

Inlet Water Temperature (deg. F)

7.0 WIRING

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.

Contact capacity of outputs C1 or Ap is 3 running Amps with a maximum inrush of 6 Amps. If the capacity of the pumps is in excess
of these maximums, you must either use a pump controller, or isolation relay to energize the pumps.

20

7.1 Simplified Wirin g Connections

Heat and Indirect Wiring

120V WIRING

Green

Black

Electrical Box

Blue

Purple

15 AMP FUSED

POWER SUPPLY

Primar y Pump

White

* Indirect

Circul ator

120/1/60

Indirect

Aquastat

CAUTION

Contacts that energize
the se inputs

MUST BE DRY

CONTACTS ONLY

N

t

a

t

s

o

m

r

W

e

h

T

R

T

C

A

Outdoor
Probe

D

O

5V WIRING

Combi Wiring

120V WI RING

Flow Switch

Green

Blue

Black

Electrical Box

Primary Pump

White

120/1/60

15 AMP FUSED

POWER SUPPLY

CAUTION

Contacts that energize
these inputs
MU ST BE DRY
CONTACTS ONLY

N

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.

Warni ng!!! A bad i nstal l ati on could rui n t he Sent r y

Board and void your warr ant y.

• Before providing 120 Volts to the boiler, do a continuity check between all wires and ground to make sure that there are no electrical

leaks that could damage the board.

• Before providing 120 Volts to the boiler, do a polarity check of the line and neutral wires, line must be connected to black and ne ut r a l

must be connected to white.

• Do not use magnetic tip screwdriver near the Sentry board.

• Verify that the wires connected to the Sentry TC and AC terminals are not grounded, or have any voltage applied to them, or voltage

to ground (dry contact closure only).

• Ensure that the probe wire is not damaged.

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

operation

t

a

t

s

o

m

r

W

e

h

T

R

T

C

A

Outdoor

Probe

D

O

5V WIRING

Warning

Maximum current of blue wire (C1) is 3
Amps, with all pumps r unning. Current
in excess of 3 Amps, may damage the

board, and void the warr ant y.

21

7.2 Advanced Wiring Systems

7.2.1 M ultiple 4 wire Zone Val ves

Legend

P1- Primary Pump P3 - Secondary pump
P2- Indirect pump, or CB - Trinity Control box
Combi Valve
*R – 120V Relay Coil *R1 - Relay Contact
* Only required with Combi boiler.

Burner On
Heating Pump

Aux. Pump
Call for Heat

Water

TCA

%Ef.Air

Blue

White

Blue

Purple

Black

120/1/60

15 AMP FUSED

POWER SUPPLY

The basic multiple zoned system uses normally closed four (4) wire zone valves. This wiring system is used with the piping as described
in Section 6.2.1 “Multiple Zones using Zone Valves”.

Operation
Room thermostat closes circuit to zone valve motor, thus opening the valve. When the valve is opened, the end switch closes the circuit
between terminals T-C on the Sentry control. The Sentry 2100 provides power to the primary pump and secondary pump via (C1), once
these pumps are on, it turns on the burner.

Once the room thermostat is satisfied, it breaks power to the motor, which opens the end switch, and the T-C circuit. The Pumps and
burner turn off.

22

7.2.2 M ult i ple Zones wit h Taco Val ve control l er

(Models ZVC403 to ZVC 406)

P1- Primary Pump CB- Trinity Control box

P2- Indirect pum p, or

Combi Valve

Legend

Water

%Ef.Air

Bur ner O n
He ating Pump

Aux. Pump
Call for Heat

TCA

120/1/60

15 AMP FUSED

POWER SUPPLY

The basic multiple zoned system using normally closed 2 – 3- or 4 wire Taco zone valves. This wiring system is used with the piping as
described in Section 6.2.1 “Multiple Zones using Zone Valves”.

Operation
Room thermostat closes circuit to TT terminals Taco ZVC403 to ZVC 406 zone controller. The controller energizes the appropriate zone
valve and closes the circuit between terminals T-C on the Sentry control. The Sentry 2100 provides power to the primary pump and
secondary pump via (C1), once these pumps are on it turns on the burner.

Once the room thermostat is satisfied, it breaks power to the motor, which opens the end switch, and the T-C circuit. The Pumps and
burner turn off.

23

7.2.3 M ult i ple Zones Pump controller

(Models Taco SR504, Argo ARM 861 Series)

P1- Primary Pump CB- Trinity Control box

P2- Indirect pum p, or

Combi Valve

The basic multiple zoned system using circulating pumps. This wiring system is used with the piping as described in 6.2.2 Multiple Zones
using Pumps and 6.2.3 Multiple Zones with different temperatures.

Operation
Room thermostat closes circuit to TT terminals of the pump controller. The controller energizes the appropriate circulating pump and
closes the circuit between terminals T-C on the Sentry control. The Sentry 2100, provides power to the primary pump (C1), once the pump
is on, it turns on the burner.

Once the room thermostat is satisfied, it breaks power to the TT terminal of the pump controller, which opens the X –X contacts, which
opens the T-C circuit. The Pumps and burner turn off.

Indirect
thermostat,
or combi flow

switch

Legend

24

7.2.4 M ult i ple Temperature Zones with Inj ection Pumps

(Models Taco SR504, Argo ARM 861 Series And Tekmar 356 controller )

Indirect thermostat, or
combi flow switch

Loop 1 (Hi Tem p.)
Thermostat , or

manifold end swit ch

Loop #1, Hi Temp.

Loop 2 (Lo Temp.)
Thermostat , or

manifold end swit ch

Legend

P1- Primary Pump ZP- Zone Pump
P2- Indirect pump or 3-way Valve in Combi BS.- Strap on boiler sensor
CB- Trinity Control box MS.- Strap on mixing sensor
IP- Injection Pump ODS.- Outdoor sensor

Loop #2, Lo Temp.

This wiring system is used with the piping as described in 6.2.3 Multiple Zones with different temperatures ((Using Injection pumps))
Operation

Room thermostat or the end switch of a zoned manifold closes the circuit to TT terminals of the pump controller. The pump controller
then:

1. Sends 120 volts to the zone pumps (which circulates mixed water throughout the loop).

2. Sends 120 volts to the injection pump, through the 356 Tekmar controller.

3. Closes the circuit between terminals T-C on the Sentry control. The Sentry 2100 provides power to the primary pump via (C1),

once the pump is on, it turns on the burner.

The 356 controller reduces or increases the speed of the injection pump, depending on the temperature at the “Mix sensor”.

25

Once the room thermostat is satisfied, it breaks power to the TT terminal of the pump controller, which opens the X –X contacts, which
opens the T-C circuit. The Pumps and burner turn off.

In an injection system, it is important to understand the effect of flow and temperature set points. It may be necessary to program the
Sentry controller higher than the desired Mix temperature of the Hottest Loop.

Consult the Tekmar installation manual for detail installation and operation of this control.

8.0 SENTRY 2100 CONTRO LLER

(Cauti on: Sent r y control ler used on Ti400 is diff er ent then the Sent r y control ler used on Ti100-200 model s. The T4.1
control l er can only be used on Ti400’s, w hi le the T2.2 controll er can only be used on Ti100-Ti 200’ s)

The Sentry control l er is the central controller f or the Tri nity boil er . The Sentr y handl es all t he combustion l ogi c,
together w ith t he ener gy management f uncti ons. The Sentry 2100 operat es in t w o diff e re nt modes, reset or
conventional . The mode is automaticall y det er mined by t he pr esence of the out door sensor . W hen t he Sentry 2100
detects the presence of the outdoor sensor the controll er will oper at e in Reset Mode. If the outdoor sensor is not
install ed, the controller will operat e i n Conventional Mode. If outdoor sensor is connected after start-up boiler must
be powered of f and on.

8.1 Sentry 2100 Display

The following describes the meaning of the lights on the Sentry controller.

Green Lights:

Burner/Bruleur = Indicates that the ignition system

is activated

Circ. = Indicates that the heating pump is energized

Circ. Aux.= Indicates a call for DHW, and Indirect

pump or 3-way valve is activated.

Thermostat Demand= Indicates that terminals T-C

are closed, iniating a call for heat.

Water Temp= When
illuminated, indicates
that the display is
showing boiler water
temperature.

Air = If the air s e ns or i s
being used. When
illuminated, indicates that
the display is showing
outdoor air temperature.

Gas I nput Value= W hen
illuminated, indicates the
current input level (46-240
on Ti100-150, 40-240 on
Ti200, 35-195 on Ti400).
See Chart to determine

DHW Temp. = Wh en
illuminated, indicates
that there is a call for

domestic hot water.

input.

Display Data - Input conver si o n chart

400
350
300
250
200
150

BTU (000's)

100

50

0

240 215 190 165 140 115 90 65 48 40

LED Display

Ti150 Ti200
Ti400 Ti100

26

8.2 Sentry 2100 Operation

T

T

T

T

T

T

T

T

T

T

The Trinity boiler employs a pneumatic modulation system. This modulation system increases or decreases the velocity of the 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 term “Set Point” is used to indicate the desired temperature that the Trinity will try and maintain, by increasing
or decreasing the input.

Condition

Set Point
Burner On
Burner Off

Heat Circ. (C1)
Aux. Circ. (Ap)

-C & A-C Open
(No Storage)

Standby

- HI L0 L0

- HI – DIF (LO-10)

- HI + 10

Off On Off
Off Off On

-C Closed &
A-C open

-C Closed &
A-C Clos e

-C Open &

A-C Clos ed

-C & A-C Open

(Storage)

Note 3

Heating Only Domestic Only Domestic Only Storage Mode

Note 4

(LO-10)

200°F 200°F 180°F

Note 1

Off

Note 2

On

Note 4

Note 1

On

Note 2

On

160°F
140°F

Condition

Set Point
Burner On
Burner Off

Heat Circ. (C1)

Aux. Circ. (Ap)

-C & A-C Open

Standby

Note 3

Heating Only Domestic Only Domestic Only Storage Mode

- HI

- HI

- HI

Off On Off
Off Off On

-C Closed &
A-C open

L0 L0

Calc.

– DIF (LO-10)

Calc

+ 10

Calc

-C Closed &
A-C Clos e

Note 4

200°F 200°F 180°F

Note 1

Note 2

On

-C Open & A-C
Closed

(LO-10)

Note 1

Off

Note 2

Note 4

-C & A-C Open

(Storage)

160°F
140°F

Note 3

On

On

Note:

1- For Combi units the Heating Circ. (C1) is powered for both heating and domestic hot water.
2- For Combi units the Aux Circ. (Ap) powers the 3-way diverter valve. (Located in the boiler)
3- Combi units only, unit c ycles on te mperature (140-180º F) for 1 to 24 hours (StO set ting) after last do mestic hot water call , unless

StO is set to OFF.

4- For Combi units the burner turns on whe n the water temperature is less then 190°F on the initial call, afterwards it turns back o n

when water temperature is less then LO set point.

8.3 Sett ing the Sentr y 2100

Programming is accomplished by a series of three push buttons located on the bottom side of the control. (Function, ↑ and ↓). To enter
the programming mode, press the function key once. To scroll through the various menu options depress ↑ until the menu is displayed.
To alter the value press Function once, and the current value will be displayed, then use ↑ for up, and ↓ for down, until 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.

27

8.3.1 Sent r y 2100 M enu

Menu

Item

RUN

LO 80-190ºF

HI 80-200ºF

DIF 1-40

RES 70-HI

SFS 75-100

HFS 100-240

LFS 40-100

ER5 ON/OFF

FRE ON/OFF

StO OFF-24

To start the control operation, you must return to RUN in the menu, and press Function. Normal operation will begin. (*Note: LFS
must not be set below 46 on Ti100-150’s.)

Settable

Range

Description

Program Mode - When Run is displayed, controller is
in ‘Prog’ mode. Arrow up or down to scroll through
menu items.
DHW Set Point – Boiler temperature the control
attempts to maintain during a domestic hot water call
(A-C circuit closed).
Central Heating Set Point – Boiler temperature the
control attempts to maintain during a heating call (T-C
circuit closed). Note: the domestic call takes priority
over the heating call.
Differential Setting - Applies only to a heating call.
Temperature difference below set point at which burner
will re-light.
Sets Outdoor Reset Curve Slope – The temperature
where the boiler water set-point (heat call only) equals
the outdoor temperature. I.e., if RES is set to 70, then
the heating set point becomes 70 when it is 70ºF
outdoors or higher. (Only used if outdoor sensor is
connected)
Starting Gas Input Value – Settable from 45-90 on
Ti400 models.
Maximum Gas Input Value – Settable from 90-195 on
Ti400 models.

Minimum Gas Input Value – Settable from 35-90 on
Ti400 models

DHW Time-Out – When turned ON removes priority
from DHW call after 2.5 hours; prioritizes heating call.
Freeze Protection – When turned ON the control
operates the burner and the circulator once the
temperature drops below 40ºF. WARNING this is not
a guarantee protection from freeze-up.
Storage Feature Timer – Length of time in hours
storage feature will keep boiler hot after the latest
DHW call, only active on Combi boilers.

Typical Settings

NA

160ºF

140-160ºF (Fan Coil)

170-190ºF (Baseboard)

100-120ºF (Low temperature

Infloor)

20

85

80 for Ti100-200

50 for Ti400

240 for Ti100-200

195 for Ti400

50 for Ti100-150

40 for Ti200
35 for Ti400

ON

ON (if boiler controls primary

circulator)

4 (turn OFF if Combi boiler

utilizes a storage tank)

28

8.3.2 Cal culating Outdoor Reset Curve (RES)

Formula:
Operating Temperature (HI

) = { (RES – Outdo o r Te mp) x (H I – RES) / RES} + RES

CALC.

Example:

• There is a call for heat and no call for domestic hot water (T-C closed & A-C open), the control

uses the programmed HI and RES settings and the current outdoor temperature.

• The HI is programmed 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 & Setp oint=160

170

150

130

110

90

Water Temp. (F)

70

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

Ou td o or T emperatu re (deg .F)

8.4 Out door Sensor ( 10K)

To fully take advantage of the energy saving features of the Trinity boiler, it is necessary to install the outdoor sensor provided. Install
the sensor preferably on the north, or coldest side of the building, not within 10 feet of the discharge of the gas vent outlet, or other
sources of heat. The outdoor sensor connects to the top of the boiler on terminals O and D (terminals are located at the top of the left side
panel on Ti400 models).

Hole in
Wall

Sensor # 81027-1

Sensor # 83460

(replaces 81027-1)

29

9.0 LIGHT ING BOILER

9. 1 Initia l S tart-u p

• Ensure that the boiler is wired in accordance with this manual.

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

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

1. Turn on power to the Trinity Boiler. The boiler should run through a purge, and combustion should occur. (The control system

has a built in ignition retry, allowing the system to retry at least four times, before locking-out.)

2. Verify that the gas line pressure is 4-9”wc. for natural gas, and 9-12” wc. for propane.

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% - 9.5% for natural gas, and 9.0%-10.5% for propane. If the reading does not
fall within this range, contact NY Thermal, for assistance.

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.

For Your Safety, Read before operating

A. 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.

B. BEFORE OPERATING, check all around the appliance area for

gas. Be sure to check next to the floor, as some gases are heavier
than air, and will settle on the floor.

C. Use only your hand to turn gas knobs, never use a tool. Forcing the

valve, or attempting to repair it can cause fire or explosion.

D. Do not use the appliance if any part is under water.

If you do n ot f ol low th ese
in st ructions exact ly, a fi re
or explosion may result
causi ng property dama ge,
and loss of life.

Warning

9.2 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 boiler.

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 boiler.

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 boiler” and contact a professional service technician, or gas

supplier.

9.3 T ur n off Boiler

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

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

30

10.0 TROUBLE SHOOTING

This section is intended to assist the service technician in detecting and correcting common errors. The Sentry 2100 is 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:

Problem 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 Sentry Control.
3 – Replace Water Sensor if the resistance is not in the correct range. (See resistance
charts for 1 Mohm Trinity Thermister)

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 resistance
charts for 1 Mohm Trinity Thermister)

The error locks the boiler out for one hour before retrying ignition.
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 – Ti100-200’s 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 there is a
minimum of 12PSI on the boiler outlet, prior to the primary circulator; ensure the boiler
is plumbed in primary-secondary fashion. Replace water pressure switch if plumbing
and pressure is correct and if it measures an open circuit.
3 – Ti400’s are equipped with a flow switch on the boiler outlet. Ensure the flow
switch is closing, if not check for proper flow rate.
4 – Check for continuity through the 24VAC limit wiring and manifold and stack limits,
replace limits or wiring that are not a closed circuit.
Reset the ER5 error by resetting the power or cycling the DHW call. Check for proper
operation of the DHW call.
1 – Combi’s are equipped with a DHW flow switch; ensure it is not sticking in the
closed position when there is no DHW flow. If so, remove it and free it of any debris
and check for proper operation, replace if necessary.
2 – For non-Combi boilers, operating with an indirect water heater, check for proper
boiler water circulation during a DHW call, and check for proper operation of the
indirect water heater’s Aquastat.
3 – For applications with prolonged DHW draws, turn the ER5 option OFF.

1- 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. (Sentry will retry ignition
sequence 1 hour after ER6 code originally occurs or if control is reset)

If OD probe is being used, the HI setting will be calculated using formula in Section 8,
adjust RES setting as necessary.

1-If the thermostat demand light is turning off, the thermostat has satisfied.
2-If DHW temp light is turning off; the aquastat or call for domestic has been satisfied.

Indicates that the Sentry control has lost communication with an internal processor,
contact NTI for assistance.

ER1

On Disp la y

ER2

On Disp la y

ER3

On Disp la y

ER4

On Disp la y

ER5

On Disp la y

ER6

Burner shuts

off before

set-point

temperature

is reached

(and burner

light goes out)

ER9

“Water Temperature

Excessive”

Sentry has sensed a water

temperature in excess of

250ºF at the Water

Sensor.

“Water Sensor Short

Circuit”

Sentry has sensed a short

circuit in the Water

Sensor circuit.

“Water Sensor Open

Circuit”

Sentry has sensed an open

circuit in the Water

Sensor circuit.

“24V Limit Error”

Sentry has sensed a lack

of 24V on the outlet of the

Sentry burner relay (B1).

“DHW Time-Out”

The ER5 option is ON

and the Sentry has sensed

that the DHW call has

lasted longer then 2.5

hours, thus removing

pr i o ri ty from the DH W

call.

“Flame Lock Out”

Sentry has sensed a lack

of 24V to the gas valve

during operation or a

Fenwal ignition lockout.

Reset calculation being

used to lower HI setting.

Thermostat is satisfied

Internal Controller

31

ASO

Indi ca tes tha t

the Air

Switch is

Open

ASC

Indi ca tes tha t

the Air

Switch is

Closed

Two Flashes

on Fe nwal

Three Flashes

on Fe nwal

Boiler will not

stay lit.

Bo i ler ba ngs

or hisses

Sentry

Controller

Locks-up

Display Goes

Blank

Fault

“Air Switch Open”

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.

“Air Switch Closed”

This is displayed when

the boiler has turned the

blower off and is

expecting the air switch to

be open.

“Flame Fault”

The Fenwal controller

senses flame prior to

ignition sequence.

“Ignition Lockout”

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

Excessive noise, current,

or voltage spikes in the

120V power supply.

No power to control or

control failure

1 – Are the vinyl tubes connected between the air switch and the ports on the inlet
pipe? Negative side of switch connects to the port on the 1-1/2” PVC elbow (2” elbow
on Ti400).
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. (Note:
switch on Ti400 condensate drain must be set at 3”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
problem may be with blower or Sentry control.
1 – Is the fan running. If so check for 24V between B and D terminals (see wiring
diagram). If 24V is not present replace transformer.
2 – Check venting termination with required venting described in manual.

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.

Reset Boiler so it will attempt to ignite.
Check for proper operation of ignition components. Make sure igniter glows and gas
valve opens.
Check for proper line pressure at gas valve when it opens.
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”).
Check combustion properties.
If the Burner light on the Sentry is going out, go to “Burner shutting off”.
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 bent it away
from the burner slightly.
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. This problem can lead to boiler

overheating!

2 - Boiler may be plugging-up 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%.
Check for voltage at the wires going to the A-C-T-O-D terminals of the Boiler.
Check the magnitude of the line voltage power supply.
Check the Amp draw of output C1 and Ap (max 3 Amp).
Check the Amp draw of control on start-up (max 6 Amps)

Check for 120V between terminals L1 and L2 at Sentry.

• If 120V exists turn power off and remove line voltage harness from Sentry. 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 circulators prior to
replacing the internal fuse. To access the internal fuse, remove the front decal to
reveal the screws securing the face plate cover.

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

32

Ensure that the venting lengths are in compliance with Section 3.4
Ensure that the line pressure during operation does not drop more than 20% from the

Boile r Lights

rough or
pulsates

Typically an imbalance in

the Air to gas ratio

static line pressure.
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.
Heat exchanger may be dirty, remove burner door and inspect, clean if necessary.

Fan appears

to be creating

a noise in the

house

Slight vibration can cause

noise in the residence

(This is not a warranty

issue)

Making a rubbing noise.

((This is not a warranty

issue))

Use flexible gas line to insolate the vibration noises between the gas valve and the line.
Don’t hang gas lines from floor joists.
Use rubber insulators with gas line supports.

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

The following are the thermister curves for diagnosing the water and outdoor air sensors.

1. Measure the resistance of the thermister when disconnected.

2. Using the appropriate chart, find the resistance and move either vertical (Water Sensor) or horizontal (air probe) until the

line is intersected.

3. Move 90 degrees to the corresponding temperature.

4. If the temperature is plus or minus 10 degrees, then the probe is operating correctly.

Tri ni t y T h e r m ist o r R e si st a nce Ch a r t

1 Mohm W a t e r P r ob e ( Low Te m p.)

Trinity Thermistor Resistance Chart

1 M oh m W a ter Probe (Hi Temp .)

2.25
2

1.75

1.5

1.25
1

0.75

0.5

0.25

Resistance (Mega Ohms)

0

50 60 70 80 90 100 110 120 130 140

Water Temperature (oF)

Outside 10K probe

100

90

Thousands

80
70
60
50
40
30

Resistance (ohms)

20
10

0

100 75 50 25 0

Temperature (F)

120
100

80
60
40
20

Resistance (Ki l o Ohms)

0

160 170 180 190 200 210 220 230

Water Temperature (oF)

11.0 SEQ UENCE OF O PERATION

The following is the normal sequence of operation for the trinity boiler.

Trinity Sequence of operation

Energizes

3-way diverter

valve

Energizes Primary

Pump (C1)

Error

A S C

24 Vlot signal
to blower

120v Power

Comb i Model

Indirect
Water
Heater

Applied

Indirect

Combi

or

D ispla ys ve r s i o n

t2.0 or t4.0

Indirect thermostat
or flow switch closes A-C
((Call for Domestic))

Energizes Indirect P um p

(Ap) turns off C1

Closed

NO

Open

A-C Closed

Air
Switches

Open

standby mode

Sentry 2100

Sentry 2100

Sentry 2100

Fan to SFS (75)

Bo ile r in

Awaiting

Input

Thermostat, End switch
or relay closes T-C
((Call for Heat))

Energizes Primary

Pump (C1)

((Ca l l fo r Ig n i tio n ))

Sentry 2100

24 V

Manifold & Stack Limit

(Ti 150 & Ti200)

Mani f ol d Lim it
& Fl ow Swit c h

(Ti 400)

24 V

Three
Retries
for F la me

Less than

1.0 mic roA

Error

A S O

Sentry 2100

Modulates Fan

based upon setpoint

and progra ming

Call for flame ends

Open

Hi pressure N.C.
Switch on Ti400

ONLY

Igniter warm-up

NC

Closed

5 seconds

Closed

NO

Po wer to Ig nitor

120V to S1

Power to Gas Valve

Prepurge

Flame Probe

Signal < 1 micro A

Greater than 1.0 microA

34

12. 0 W IRING S CHEMATIC

35

13.0 INSTALLATION CHECKLIST

Installation

a) Connect all plumbing, and ensure that there are no system leaks, add Fernox F1 Protector (NTI PN: 83448).
b) Connect, secure, and glue all vent piping.
c) Install all gas piping as per this manual, and local codes. Pressure test, to detect any gas leaks.

Start-up

1. Install pressure gauge (Gauge= 0” to 15” w.c. scale) and check line and manifold pressures. (See “Section 5.2”)

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

3. Turn Power on to boiler.

4. Set Sentry Controller to desired settings.

5. Turn thermostat up, Ignition will occur.

Operational Checklist

Ensure that Carbon Dioxide Readings are within the acceptable ranges. Using an appropriate Oxygen or Carbon Dioxide analyzer, take a
sample of the flue gas. The sample must fall within the acceptable Carbon Dioxide ranges, which is 8% - 9.5% for natural, and 9.0%-

10.5% for propane. (See “Section 5.2”)

Before Leaving

• Remove gauge from gas valve and tighten bleed

screw and test plug for leaks.

• Allow boiler to complete at least one complete

cycle, or at least 15 minutes running time.

• Always verify proper operation after servicing

It is imperative that you explain to the homeowner that it is their

• Keep the vent terminal free of snow and ice.

IMPORTANT

responsibility to:

14. 0 ANNUAL MAINTENANCE AND
INSPECTION

This unit requires very little maintenance, however a
Qualified Technician should inspect it at the beginning of every heating season. Ins pection Check list:

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, and vent screens are cleaned.

6.) Check the burner plate for signs of leaking.

7.) Verify the vent clearance as per Section 3.0

8.) Listen for water flow noises indicating a drop in boiler water flow rate. The boiler and hydronic system my need to be flushed to

eliminate hard water scale (Use Fernox DS-40 Descaler – NTI PN: 83450).

14.1 Combustion Cha mb er Cleaning

Once every second year the burner door should be removed so the combustion chamber can be inspected for flue gas blockage. Such
blockage will reduce the boiler’s capacity/firing rate and can impact negatively on how smooth and efficiently the burner lights. Vacuum
out any loose build-up and clean the heat exchanger surface with an appropriate cleaner for combustion chambers. Use nylon or other
non-metallic brush to loosen the sulfate incrustations and any other contaminates. Rinse with water allowing the solution to exit via the
condensate drain. This process may warrant removing the insulation disc from the back of the heat exchanger.

• Periodically check the vent terminal for debris.

36

15.0 PARTS LIST

Models Ti100-Ti200

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 506-432-1130. Notes: *Used for Combi version only.

No. P.N. Description

1 8 2 657 Pr em ix burne r , 135. 8 Ti-1 5 0
1 8 2 658 Pr em ix burne r , 200. 6 Ti-2 0 0

1A 8 2 761 Pr emix Burner Gasket

2 8 2 457 Tran s form e r, 24 V
3 82013 Sentry 2100
4 82052 Blower #RG130 Ti-150 On ly
4 82661 Blower #RG148 Ti-200 On ly

5 82 054 Gas Valve (CVI) VK8115F 1134 B
5A 82 065 Gas Valve 1/2 " npt elbow
5B 82 600 Gas Valve Vent connection

6 82662 A ir switch Huba @ .2"wc.

7 83035 Thermister 1/4"NP T

8 8 2 058 I gnit i on Modu le (Fe nwal)

9 8 2 708 IGNI TER , #6 01, c/w SS shi eld

10 82 762 R auscchert Flame Ro d

11 82763 Composit Fl ue B ox
11A 82 764 Comp osi t Flu e B ox Gas k et
11B 82765 Comp osi t Flue Outlet Gas ket
11C 83291-1 Flue Ad a pter Asse mbly ( T i1 00-200)

12 82 992 Ma ni fold Limit, 1/4N PT(Ti10 0-150 ASME )

13 82 596 Ti100-150 Heat Exchanger

13 83 012 Ti100-150 ASME Heat E xchanger

13 82 647 Ti 200 Heat Exc hange r

14 82 650 LP o ri fice 5.20mm Ti15 0-200 Only

14 83 216 LP orific e 3.40mm T i1 00 Onl y

15 82660 Stack Limit, 1/4BSP, 190F, Dif=30

16 82 766 Blower gasket Ti100-150 Only

16 82 719 Blower gasket Ti200 Only

17 8 2622- 1 Ti I nl et P ipe assemb ly

18 83 042 Conden sa te Y Drain
18A 82913 S iphon Condensate Trap

19 82 767 Cast aluminum Burner door
19A 82 769 T i C eram i c bu rne r door di s c

19B 82 770 Ti Burner do or ga sket

20 82 768 Ti Ignit er gask et

21 82228* Tempering valve #AM101-US-1

22 82 771 Ex tended air tube

23 82011* Plate heat exchange r LA1430

24 81896* Flow s witch FS-380, . 5activate

25 82160* 3 way V alve VU54S2016B, 3/4"

26 8 2 159* 3 wa y a ct uator VU44 4A 1 007B

27 82 754 C on trol panel & Harness
27A 82754-1 PCB Optocoupler

28 82054-1 CVI Venturi 01 (Ti150 & 20 0)

28 83 205 CVI V enturi 0 03 (Ti100 Only)
28A 82 054-2 CVI Vent uri Gaske t

29 82104-1 Ti Air metering Elbow

30 81027-1 Sentry (10k) Outdoor Air Sensor

31 8 32 23-1 Pressure Switch 1/4NP T ( Ti100-150ASME)

32 83 112 Divider plate insul (c/w was her & screw)

33 83 462 Tee, Brass, 1/4"

34 82 539 Auto Ai r Vent, 1/ 8"

35 83 059 Term i nal St r ip

36 8 24 11-3 Ti 10 0-200 Cover

30

35

27A

2

27

8

3

36

31

12

7

33

34

6

11C

11B

11

15

24

21

25

13

26

19A

11A

18

23

19B

19

20

9

32

18A

1A

22

1

10

4

14

5A

5

29

5B

16

28A

28

17

37

Model Ti400

No. P.N. Description

1 83173

1A 82761

2 82457
3 83171
4 82994

5 82989
5A 82991
5B 83194

83016

6 82662
6C 82539

7 83035

8 82058

9 82708

10 82762
11 82906
12 82992
13 82926
14 82993

14A 83017

15 81887
16 82766
17 83037

17A 83038

18 82913
19A 82769
19B 82770

20 82768

21 83034

22 83195

23 83141

24 82990

25 83106

26 83001

27 82754-1

28 29 83170-1

30 81027-1

31 83018

32 83019

33 83013

34 83005

35 13701

36 82148

37 83112

38 83059

39 82411-1

Premix Burner NIT 327 (For Ti400)

Premix Burner Gasket

Transf orm e r, 24V

Sentry 2100 Assembl y

EBM BLOWER #RG148/E
Gas Valve VR8615VB 1044B
Gas Valve Adapter, 3/4" NPT

Gas Valve Connector O-ring

Gas Valve Harness

Air switch Huba @ 0.2"wc.

Air Vent

Thermist er NTC 1/4" NPT, 1Mohm

Ignition Module (Fenwal)

IGNITER, #601, c/w SS Heat shield

Flame Rod Rausch ert (Ti-Series)

Air Switch 604.E421180 set @ 3" wc

Limit Switch, 1/4"NPT, (Manifold)

Ti-400 Heat Exchanger, ASME
Gas Valve Orifice, 8.0mm, NG

Gas Valve Orifice, 6.2mm, LP
Flow Switch, FS-10C (Ti 400)

Blower Gasket (Ti100, 150 & 400)

Condensate Tee 3/4"HB to 3/4"

Adapter, 3/4" x 1/4"

SIPHON CONDENSATE TRAP

Burner Do or Cer a mic Dis c
Burner Door Viton Gasket

Igniter Gasket (Ti-Series)

Exhaust Test Plug (Ti 400)

Extended Air Tube (Ti400)

Ti 400 Control Panel, Complete

CVI Venturi (Ti 400)

O-r i ng, Ve ntur i to B lo w er ( T i400)

Test Port Retaining Clamp (Ti 400)

PCB Optocoupler

Air Metering Assembly (Ti 400)

Sentry 2100 (10K) Outdoor Pr obe

Vent Screen, 4" (Ti 400)
Vent Screen, 6" (Ti 400)

Nipple, 1-1/4" x 8", Brass

1-1/4"x 1-1/4"x 3/4" Tee Brass

RELIEF VALVE 3/4" #335 30 PSI

PRESSURE GAUGE 0-30 PSI

Div ider Insul . ( c/w wash er & screw)

Terminal Strip

Ti400 Front Cover

31

32

33

34

36

35

30

14A

38

Reverse

6C

Angle

15

7

12

11

8

26

21

6

3

2

23

13

19A

19B

19

20

5B

14

5A

28

37

18

17

17A

22

9

1

1A

10

5

16

25

4

24

29

39

38