Trinity T150 User manual

Warning
THIS BOILER MUST HAVE WATER FLOWING
THROUGH IT WHENEVER THE BURNER IS
ON. FAILURE TO DO THIS WILL DAMAGE
THE UNIT AND VOID THE WARRANTY.
1.0 SPECIFICATIONS................................................................................................. 2
1.1 HIGH ALTITUDE OPERATION.................................................................................2
2.0 INSTALLATION REQUIREMENTS .................................................................. 2
3.0 VENTING................................................................................................................ 3
3.1 VENT PIPE MATERIAL .................................................................................... 3
3.2 VENTING CLEARANCES ................................................................................. 3
3.3 VENTING CONFIGURATIONS ........................................................................4
3.4 DETERMINING VENT LENGTHS ...................................................................7
4.0 CONDENSATE DRAIN......................................................................................... 8
5.0 INSTALLING GAS PIPING ................................................................................. 9
5.1 INSTALLATION ......................................................................................................9
5.2 TESTING AND SETTINGS ........................................................................................ 9
6.0 HEATING SYSTEM PIPING ............................................................................. 10
IMPORTANT ..........................................................................................................11
6.1 PRIMARY LOOP PLUMBING.........................................................................11
6.2 SECONDARY LOOP HEATING SYSTEM..................................................... 14
6.2.1 Multiple Zones using Zone Valves..............................................................14
6.2.2 Multiple Zones using Pumps....................................................................... 14
1 14
6.2.3 Multiple Zones with different temperatures................................................ 15
6.3 DOMESTIC COMBI SYSTEM.........................................................................16
7.0 WIRING................................................................................................................. 18
7.1 SIMPLIFIED WIRING CONNECTIONS..................................................................... 19
7.2 ADVANCED WIRING SYSTEMS ............................................................................20
7.2.1 MULTIPLE 4 WIRE ZONE VALVES ...........................................................20
7.2.2 MULTIPLE ZONES WITH TACO VALVE CONTROLLER ........................................21
7.2.3 Multiple Zones Pump controller................................................................. 22
8.0 SENTRY 2100T CONTROLLER........................................................................ 24
9.0 LIGHTING BOILER ........................................................................................... 27
9.1 INITIAL START-UP .........................................................................................27
9.2 RE-LIGHTING UNIT........................................................................................27
9.3 TURN OFF BOILER .........................................................................................27
10.0 TROUBLE SHOOTING .................................................................................... 28
11.0 SEQUENCE OF OPERATION ......................................................................... 31
13.0 ANNUAL MAINTENANCE AND INSPECTION........................................... 33
13.01 COMBUSTION CHAMBER CLEANING................................................................ 33
14.0 PARTS LIST ....................................................................................................... 34
15.0 WARRANTY....................................................................................................... 35
SAVE THESE INSTRUCTIONS
Installer must leave, and affix these
Instructions close or adjacent to the boiler
CAUTION: IT IS THE RESPONSIBILITY OF THE
HOMEOWNER TO KEEP THE VENT TERMINAL CLEAR OF
SNOW AND ICE.
V
ERSION DATE: 6-1-04
For boilers produced after 5-1-03

2
1.0 SPECIFICATIONS
Description T150 T200
Input (BTUx1000)
Input Capacity - Max. / Min.
Natural =145 / 50
Propane= 140 / 50
Natural = 200 / 75
Propane= 190 / 75
Output (BTUx1000)
Output Capacity - Max. / Min.
Nat=137 / 47.5
Propane = 133 / 47.5
Natural= 188 / 70.5
Propane = 178.6 / 70.5
Steady State Efficiency 95% 94%
AFUE Efficiency 91.9% 90.8%
Venting material ABS, CPVC, PVCsch. 40, AL294C stainless
Max. Vent lengths 2” 15 Equivalent Feet
(natural only) Not permitted
Max. Vent lengths 3” 105 Equivalent Feet ((Natural Gas Only))
Max. Vent lengths 3” 50 Equivalent Feet ((Propane))
Weight 90 lbs.
Dimensions L-W-D 23.75 – 20.5 – 15
Clearance to Combustibles 0”
1.1 High Altitude Operation
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 is not capable of providing its
specified capacity. The affect of elevation will de-rate the input by approximately 3.6% per 1000 foot
of elevation, (see following Chart).
CAUTION
At elevations greater than 2000 feet, the combustion of the Trinity 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
2.0 INSTALLATION REQUIREMENTS
100
110
120
130
140
150
160
170
180
190
200
0-2000 3000 4000 5000 6000 7000 8000 9000 10000
Elevation (ft)
Input (Mbh)
T150 T200

3
LIQUEFIED PETROLEUM (LP) PROPANE
Attention: The Trinity boiler is set to operate with Natural Gas, an LP Conversion Kit Part No. 82066-1 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 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.
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
2.10 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.
Ensure that the desired boiler location is not subjected to flooding or high moisture levels, for
damage to the boiler will occur, voiding your NY THERMAL warranty.
3.0 VENTING
The NY Thermal Trinity condensing gas boiler is a high efficiency boiler utilizing induced power
venting, which is designed 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 the Trinity approved venting material (Solid core ABS Pipe, PVCsch. 40, CPVC pipe,
AL29-4C Stainless steel pipe) as illustrated in the figure on page 5.
3.1 VENT PIPE MATERIAL
Selection of the vent pipe material must be based upon the Local codes and regulations. The
Trinity boiler is certified to operate under all conditions using solid core ABS, PVCsch.40, or
CPVC. Local codes may prohibit the use of plastics, and stainless steel venting must be
used (AL29-4C).
3.2 VENTING CLEARANCES
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 maximum typical 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”.
Clearances
To ensure proper and safe installation of your boiler, adhere to the following clearances to
combustibles:
Boiler Casing=0" Floor = Combustible Flue Pipe: Boxed in or enclosed =2”, In free air=0”
The following are the minimum clearances for servicing, however 24” is recommended:
Front = 24” Back = 0" Top = 12" Sides = 5" Bottom = 12"

4
3. 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”.
4. 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.
The vent terminal shall not terminate:
• Directly above a paved sidewalk or a paved
driveway that is located between two
buildings, and that serves both buildings;
• Less than 7 feet above grade where located
adjacent to a paved driveway or public walkway.
• Within 3' (three feet) horizontally of a window or door that can be opened, or non-mechanical air
supply inlet to any building.
• Within 6’ of a mechanical air supply inlet to any building, or roof eve containing soffit openings.
• Above a meter/regulator assembly within 3' horizontally of the vertical centerline of the regulator.
• Within 6' of any gas service regulator vent outlet.
• 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.
• Underneath a wooden verandah, porch, or deck.
• Underneath cement verandah, porch, or deck, unless both ends are open and the exhaust pipe
is installed at least 24” under the deck floor.
• 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
• Less than 3’ from an inside corner of an L-shaped structure (including walls and fences).
3.3 VENTING CONFIGURATIONS
Selection of acceptable venting materials is as follows.
Vent Piping A -C: See Chart for maximum lengths
• 2” or 3” ABS solid core.
• 2” or 3” PVC schedule 40 pipe.
• 2” or 3” CPVC schedule 40 pipe.
• 3” AL29-4C flex Stainless vent
• 3” AL29-4C Rigid Stainless Vent.
Air Supply Vent B: See Chart for maximum lengths
• 2” or 3” ABS.
• 2” or 3” PVC schedule 40 pipe.
• 3” Galvanized Steel pipe
• 3” Flex Aluminum (MAX 20’)
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.
Warning
Field supplied piping and fittings are required to
complete installation. The combustion air and
vent pipe and fittings must conform to ANSI and
ASTM standard D1785 (schedule 40 PVC),
D2665 (PVC-DWV), and D2661 (ABS-DWV).
Pipe cement and primer must conform to ASTM
standard D2564 (PVC) or D2235 (ABS).
Warning
Never mix 2” and 3” pipe in the same installation.
(All 2” or all 3”)

5
Two Pipe Vent Terminals
Concentric vent terminal
Use NTI part # 82666 or
York Part# 1CT0303
Must insert
plastic bird
screen
Note: horizontal
spacing must be
between 4”
(center to
center).
36
”
18” Min.
12” plus snow
A
llowance
Must be 1”
from wall
Support
(Field installed) Inlet air
Exhaust
Inlet air
Exhaust
Clearances and requirements of this manual
supersede, those of the Instructions enclosed in
vent terminal #650.75-N2, which contain more
detailed assembl
y
instructions.
Coupling and
elbow to be
against wall
– ½” play is
acceptable
12” Plus
Snow allowance
Example 12+19=31”
18” Min
The vertical portion of
the exhaust termination
does not require
insulation, if less than 5
feet in total length
36”
min
Minimum 12”
plus snow
allowance
4” or
greater than 4’
48”
min.
Note: inlet pipe must
always be connected to
the boiler.

6
Roof Venting
Notes
1.) 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”)
2.) Elbows on outside of wall must be no greater than ½” away from the wall.
3.) All indoor exhaust piping must be on a slope back to the boiler ¼” per linear foot of vent.
4.) Exhaust and Inlet venting must have screens installed at the termination (See figure on page
6).
5.) Exhaust vent pipe can be secured to the wall for
more rigidity.
6.) In all roof applications the discharge must point
away from the pitch of the roof.
7.) Install adequate flashing where the pipe enters the
roof, to prevent water leakage.
8.) Install and seal a rain cap over existing chimney
openings, in vacant chimney applications.
9.) For installations that exit the wall below grade.
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 ABS, PVCsch.40, CPVC, or AL294C pipe is used.
4
)
Vent len
g
ths are within the maximums s
p
ecified.
18”
12” Plus
Snow
Support
(Field supplied)
Exhaust
24”
Inlet Ai
r
Exhaust
Inlet Ai
r
Roof weather seal
Flashing (field supplied)
Note: inlet
pipe must
always be
connected
to the
boiler.

7
Excavate site as shown in figure, 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).
10.) Install the stainless steel screens 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 for 3” pipe and two
screens for 2” pipe are provided in the package.
3.4 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.
IMPORTANT: The vent pipe lengths for the air inlet must NEVER EXCEED THE LENGTH OF
THE EXHAUST. The exhaust pipe may exceed the inlet pipe by as much as 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.*Note: When fired with
Propane 2” venting cannot be used. The venting must be 3” and can only be used up to 50
feet equivalent.
Pipe Max. Equiv.
Model size Length 123456789
T150* 2" 15 10 5 0
T150&T200 3" 105 1009590858075706560
T150&T200* 3" 50 4540353025201510 5
Number of Elbows or 45
Warning
Combustion air that contains chloride,
fluoride, bromine, or iodine can cause
corrosion of the heat exchanger,
voiding your warranty.
PN 82075
12” Min. Plus
Snow Allowance
30” Min. Plus
Snow Allowance

8
Insulation
“Tundra Seal
Plus” 3.5” ID. ½”
thick
Supports every 24”
12” plus
allowance
above grade
Exhaust
Inlet
Maximum of 20 feet is
permitted for outside a
building using 3” pipe
ONLY.
Vent piping outside the Building is permitted
under the following conditions:
1. The maximum length outside the
building is 20 feet.
2. Only 3” pipe can be used.
3. All normal termination clearances are
maintained.
4. 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.
5. The pipe is supported every 24”
6. The exhaust and inlet are sloped back
to the boiler ½ ” elevation for every foot.
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. (Note check
with your municipality, or local gas company to determine if
disposal of combustion condensate is permitted)
The following are important notes that must be taken into
consideration when constructing the condensate system:
• Construct a small loop using 1/2” silicone, rubber,
reinforced nylon, or PEX tubing to create a trap, so
that combustion products do not escape into the
room via the drain. Do not use nylon, as it will
collapse, blocking drainage, and could damage
the boiler.
• This trap must be primed with water, by adding a
cup of water into this loop, prior to connecting it to
the unit.
• 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.
• When a condensate pump is used or required, select a pump that is designed for residential
furnaces.
Warning
Failure to properly connect the condensate
line will cause combustion gases to enter the
room, possibly causing serious injury to
occupants or death.
Min. 12”
Diameter
Clamp Y
to
p
i
p
e
Minimum 24”
from Y to loop
Don’t seal
opening. Allows
boiler to drain
if 1½” pipe
becomes blocked.
1½” pipe
Water
level

9
Normal Range of Gases in Flue Gases
(At maximum fan speed of 205 on Sentry display)
Natural
Gas
Propane
Carbon Dioxide
CO2 %
8-9.5 9-10.5
Carbon Monoxide
CO ppm
25-175 25-175
NOX ppm 10-50 10-50
5.0 INSTALLING GAS PIPING
5.1 Installation
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:
• 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.
5.2 Testing and settings
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.
The gas valve is equipped with two bleed
ports; one is for the Manifold pressure, which
must be 0.00” w.c. when running, and the
other is the line pressure. (4-9” for natural
and 9-12” for Propane while running)
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.
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
A
ir Inlet
Gas valve

10
Warning
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.
Input Screw
Decrease gas
Turn Clockwise
Increase gas
Turn counterclockwise
Caution
The Trinity 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.
Warning for all Systems
All systems must be flushed to remove sediment, flux,
filings, etc. Failure to do so will seriously damage the
boiler, voiding warranty. (Recommend using cleaning
products sentinel x300 for new installations and sentinel
x400 for retro-fits)
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 fittings. Hold the fitting
when installing, otherwise damage to the unit will occur.
The input Screw “MUST NEVER
BE ADJUSTED” unless you
have a calibrated combustion
analyzer to verify the
combustion properties are within
normal operating ranges.
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.
.
6.0 HEATING SYSTEM PIPING
Line Pressure
Manifold
Input Screw
IF FOR ANY REASON THE INPUT SCREW IS
ADJUSTED, A “COMBUSTION ANALYZER” MUST BE
USED TO ENSURE SAFE AND PROPER OPERATION.

11
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 (min 5 psi) or flow. (min 6 GPM)
IMPORTANT
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 an inhibitor to the system water to prevent limestone and magnetite deposits from
forming, and to protect the boiler from galvanic corrosion (Recommend Sentinel X100
Inhibitor).
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.
6.1 PRIMARY LOOP PLUMBING
Circulating Pump Due to the
Trinity design, the boiler is more
restrictive than a conventional boiler,
thus greater consideration must be
given to the capabilities of the
primary loop-circulating pump.
The following is a listing of the
recommended circulators.
Trinity Head loss
0.0
10.0
20.0
30.0
40.0
50.0
2468101214
GPM us
Feet of Head
T150 T200

12
Model
Restriction
Head Loss
Minimum
Flow (us
GPM)
Max. Temp.
Rise
Minimum Primary Pump Size
B&G Grundfos Taco
T150 7’ at 6 GPM 6 45°F NRF-33 UP 26-64 0010
T200 10’ at 8 GPM 8 45°F PL-36 UP 26-99 0011
Relief Valve (30PSI) 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.
Boiler Venting Hot water boilers are designed to operate with airless water in the system. The
Trinity boiler is provided with a 1/8” Air vent located on the top of the unit. This Air vent is intended to
vent the boiler on initial startup. This device will NOT continuously vent air collecting in the primary
loop, and it is not intended to be the primary venting device. The Air Scoop as shown in the diagram
is the primary venting location. 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
Spriovent # VJR 100TM or VJR 125TM).
Low Water Cutoff A certified low water cutoff is not provided in the package, however it is to be
field installed in any application where the boiler is located above ALL the radiation.
Plumbing
• 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.
• It is recommended that no gate valves
be installed between the LWCO and
the boiler.
• Use an air vent if installed as per our
diagram to be used as a vacuum
breaker and to eliminate air upon
filling.
Electrical
• Break the red wire looped in the
Trinity control box, and wire the
normally open contacts of the LWCO
in series with the two red wires.
Circuit is 24 volts, 1 amp.
The Trinity boiler is to be used only in a Primary / Secondary pumping system. This is to
avoid cycling problems in systems that have poor flow, or heating zones with very small
capacities. The primary loop system must be used in all cases, regardless of the
configuration of the secondary system design.
Low Water cut off
No shut off
valve between
the boiler and
LWCO.
Air Vents
Break red wire
in the Trinity
control box and
switch with
relay. Circuit is
1 amp, 24V to
igniter and gas
valve.
Water Line

13
Heating Model
With option Indirect Water
heater
Legend
A- Back flow preventor
B- Fill valve (set at 12 psi)
C- Diaphragm expansion tank
D- Cast Iron Air scoop, for excessive ai
r
conditions use Spriovent.
E- Automatic air vent
F- Relief valve (set at 30 psi)
G- Pressure gauge
H- Heating pump (see size
recommendation on page 10) Wired
to terminals C1- L2
I- Optional Indirect pump (see
recommendation on page 10) Wired
to terminals Ap- L2
J- Optional Indirect Water heater
K- Check Valve
L- Check or flow valve, (use a flow
valve if zone valves are not used in
distribution system, to prevent
gravity feeding).
M- Boiler Drain
N- Boiler inlet connection (warm)
O- Boiler outlet connection (hot)
Combi Model
Legend
A- Back flow preventor
B- Fill valve (set at 12 psi)
C- Diaphragm expansion tank
D- Cast Iron Air scoop, for
excessive air conditions use
Spirovent.
E- Automatic air vent
F- Relief valve (set at 30 psi)
G- Pressure gauge
H- Heating pump (see size
recommendation on page 10)
Wired to terminals C1- L2
I- Boiler Drain
J- Boiler outlet connection (hot)
K- Boiler inlet connection (warm)
L- External Combi Manifold
#82470
H
K
C
B
I
Water
Suppl
y
F
D
J
G
A
E
L
E
M
O
N
Insert secondary
Loop here.
See page12 & 13
Primary Loop
For Heating Model
Primary Boiler loop
Primar
y
Boiler loo
p
Water
Suppl
y
C
B
H
F
D
G
A
E
E
I
J
K
Primary Loop
For Combi
Model Only
Insert secondary
Loop here.
See page12 & 13
L
Quantity and location of
shutoff valves, and drains, are
at the discretion of the
installed.
Important
There must be
no shutoff
valve between
the boiler and
the relief
valve.
1-1/4” Pipe
Recommended
1-1/4” Pipe
Recommended

14
Flow: The Trinity boiler must have water flow going through the boiler whenever the burner is on.
CAUTION: DAMAGE WILL OCCUR IF THE BOILER IS FIRED WITH NO WATER IN IT, OR REPETITIVE
NO FLOW OPERATIONS, WHICH WILL VOID THE WARRANTY.
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 meets the need of the installation. Contractor modifications to these
instructions may be required, based upon existing piping and system design.
6.2.1 Multiple Zones using Zone Valves
6.2.2 Multiple Zones using Pumps
1
Zone
1Zone
2
Zone
3
Normally closed 4
wire Zone Valves
With End Switches
Primary
Loo
p
Max. 12” apart
See figure
7.2.1 “Multiple 4 wire Zone Valves”
for wiring
7.2.2 “Multiple Zones with Taco Valve
controller
See figure
7.2.3 “Multiple Zones using pumps
and pump controller”
Installer may require throttling and
check valves to correctly regulate the
system
Zone 1
Zone 2
Zone 3
Pumps sized to each
zones flow and head
requirements
Primary
Loo
p
Max. 12” apart

15
6.2.3 Multiple Zones with different temperatures
Using pumps and tempering valves
Using Injection pumps
Loop 1
High
Temp.
Injection
Pump
Primar
y
loo
p
Max. 12” apart Max. 12” apart
Max. 12”
apart
Max. 12”
a
p
art
Loop 2
Low
Temp.
Injection
Pump
Loop Pumps sized to each loops flow and head requirements
Boiler sensor #2
(Lo Temp.)
Boiler sensor #1
(Hi Temp.)
Mix sensor #1
(Hi Temp.) Mix sensor #2
Lo Temp.)
See figure
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 configurations may work, but
under no circumstances can a mixing
valve be placed in the primary loop as
overheating of the boiler could occur.
See figure
7.2.4 “Multiple temperature Zones
using injection pump”
Installer may require throttling and
check valves to correctly regulate
the system
Zone 3
High Temp.
Tempering valve
Zone 2
Med. Temp.
Zone 1
Low Temp.
Pumps sized to each
zones flow and head
requirements
Primary
Loo
p
Max. 12” apart

16
6.3 DOMESTIC COMBI SYSTEM
((( OPTIONAL)))
The Trinity Combi is designed for
installations where space is restricted.
For applications where space is not
restricted, the use of an “Indirect
Water Heater” is highly
recommended.
The Trinity Combi incorporates 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 ¾” pump
flange (included in Combi kit) onto the
boiler return pipe prior to installing the
boiler; the bolts must be inserted into the
flange prior to installing the flange.
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
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 the plate heat
exchanger. The flame is modulated to maintain the “LO” setting on the Sentry control. The Sentry
uses the boiler thermister to read the temperature of the boiler water. Space heating is not provided
during a call for domestic.
To improve domestic hot water performance Sentry versions T1.5 and newer, installed on Combi
boilers, go into a “Storage Mode” when demands for both space and domestic heat are finished.
The control will enter “Storage Mode” if the burner is on at the end of a demand. Once in “Storage
Mode” the burner goes to low fire, the 3-way diverting valve is energized (position “A”), and the
External Combi
Manifold #82470
Note: See page 11 for
location of expansion
tank and other
components
Insert secondary
Loop here.
See page12 & 13
Primary Loop
For multiple boilers Boiler
3
Boiler
2
Boiler
1
Pump
3
Pump
2
Pump
1
Check Valves
Heating &
Combi
Circulator
Heating System
Return (cool)
Cold Domestic
Water in
Flow
Switch
Plate heat
exchanger
Tempering
Valve
Mixed Domestic
Water
3 way
diverting
Heating
System Supply
Electronic
Thermister
Throttling
Valve Two Drains for
cleaning of plate
heat exchanger
Check Valve

17
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
circulator is powered until a boiler temperature of 185°F is reached, at which point the control
reverts to “Standby Mode”. The “Storage Mode” will be interrupted by either a call for space or
domestic heat.
DHW Check Valve A check valve on the cold water supply to the domestic hot water (DHW)
system is recommended. In some applications surges in water pressure due to a “Water Hammer”
device can cause the flow switch in the boiler to active, giving a false call for domestic hot water. A
check valve installed as per the diagram will eliminate this occurrence.
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 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.)
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 As the Trinity produces domestic hot water instantaneously, there are inherent
limitations that this system has.
1) 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 flows don’t exceed the ability of the boiler to heat the water. MORE FLOW = LESS
TEMPERATURE
2) 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 15-25 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.
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.

18
Table 1: T150C Flow rates (flow rates in usgpm)
Inlet Water Temperature (deg. F)
40 45 50 55 60 65 70
110 3.9 4.2 4.5 4.9 5.4 6.0 6.7
115 3.6 3.9 4.2 4.5 4.9 5.4 6.0
120 3.4 3.6 3.9 4.2 4.5 4.9 5.4
125 3.2 3.4 3.6 3.9 4.2 4.5 4.9
130 3.0 3.2 3.4 3.6 3.9 4.2 4.5
135 2.8 3.0 3.2 3.4 3.6 3.9 4.2
Outlet Water (F)
140 2.7 2.8 3.0 3.2 3.4 3.6 3.9
Table 2: T200C Flow rates (flow rates in usgpm)
Inlet Water Temperature (deg. F)
40 45 50 55 60 65 70
110 5.1 5.5 6.0 6.5 7.2 8.0 9.0
115 4.8 5.1 5.5 6.0 6.5 7.2 8.0
120 4.5 4.8 5.1 5.5 6.0 6.5 7.2
125 4.2 4.5 4.8 5.1 5.5 6.0 6.5
130 4.0 4.2 4.5 4.8 5.1 5.5 6.0
135 3.8 4.0 4.2 4.5 4.8 5.1 5.5
Outlet Water (F)
140 3.6 3.8 4.0 4.2 4.5 4.8 5.1
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)
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 C1or Apis 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.

19
7.1 Simplified Wiring Connections
Heat and Indirect Wiring
Combi Wiring
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.
Warning!!! A bad installation could ruin the Sentry
Board and void your warranty.
• 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.
• 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
Low Voltage (DC)
Primary Heating Circ
120 Volt Wiring
Pur
p
le
Indirect Aquastat Thermostat end
switch or heat
starter
DHW Circ
Green
10K Outdoor probe
Red
For LWCO
cut Red
Circuit
White
Blue
120/1/60
15 Amp Fused
Power Supply
Black
Secondar
y
Heatin
g
Circ
Caution
Contacts that energizes
these inputs MUST BE
DRY CONTACTS ONLY
Electrical Box
Low Voltage (DC)
Flow Switch Thermostat end
switch or heat
starter
Primary Heating Circ
Electrical Box
Green
10K Outdoor probe
For LWCO
cut Red
Circuit
White
Blue
120 Volt Wiring
120/1/60
15 Amp Fused
Power Supply
Black
Secondar
y
Heatin
g
Circ
Caution
Contacts that energizes
these inputs MUST BE
DRY CONTACTS ONLY
Red

20
Warning
Maximum current of blue wire
(C1) is 6 amps, with all pumps
running. Current in excess of 6
Amps, will damage the board,
and void the warrant
y
.
7.2 Advanced Wiring Systems
7.2.1 Multiple 4 wire Zone Valves
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.
Legend
P1- Primary Pump P3-Secondary pump
P2- Indirect pump, or CB- Trinity Control box
3-way on Combi
Version
4 wire zone
valves
Power open,
spring return
Indirect
thermostat, or
combi flow
switch