HS Tarm 2000 User manual

NOTE:Installation must be done in accordance with all State
(Provincial) and Local Ordinances, which may differ from and take
precedence over this Owners Manual, and in accordance with the
following codes:
ANSI/NFPA No. 31 - Installation of Oil Burning Equipment;
ANSI/NFPA No. 70 - National Electric Code;
ANSI/NFPA No. 211 - Chimneys, Fireplaces, Vents,
Solid Fuel-Burning Appliances; and
ANSI/NFPA No. 54 - The National Fuel Gas Code
These documents are available from the:
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
Tel: [phone]
Re-Printed October 2011

ADDENDUM
Before starting your boiler installation, we urge you to read and consider this
addendum.
Tarm Biomass strongly recommends the installation of a Termovar automatic, thermally
operated, 3-way mixing valve or loading unit with all wood or multi-fuel boilers.
When cold water returns to the boiler it causes sweating and a cold environment for
the fire which causes creosote and poor combustion.
The Termovar insures a minimum return water temperature of 160°F in the boiler.
This increases efficiency, helps prevent creosote, and considerably extends the life of the
boiler.
The Termovar helps create more efficient burning and is a recommended part of any boiler
installation.
Please call Tarm Biomass with any questions.
1-800-782-9927
IMPORTANT NOTICE:
Any tubing used for Radiant Floor Heating with a Tarm Biomass
boiler MUST have an oxygen barrier.

INTRODUCTION AND IMPORTANT INFORMATION PAGE 1
______________________________________________________________________________________________________________________________________________________________________________________
INTRODUCTION
Thank you for purchasing an HS-Tarm EXCEL boiler.
Your boiler was manufactured by BAXI/HS-Tarm, a world leader in hot water (hydronic)
heating for over 70 years. The HS-Tarm EXCEL conforms to traditional high standards for quality
and reliability. It is truly state-of-the-art in high efficiency, clean-burning multi-fuel heating. When
installed and operated properly, your boiler will operate at over 80% efficiency on wood fuel and
83% to 87% on oil or gas. If treated properly and operated according to the guidelines in this
manual it will provide years of safe, dependable and economical heating.
The Tarm EXCEL boilers have been tested and listed by the Omni Test Laboratories
Inc. The test standards used are UL 391-1995, CAN/CSA B366.1-M91, UL726, ANSI Z 21.13-
2000, and CSA4.9-M2000 to satisfy code requirements in the United States and Canada.
This manual contains installation, operation, and maintenance guidelines for all models in
the HS-Tarm EXCEL series of boilers. Your heating system design and installation should be done
by a competent professional contractor.
NOTE: Installation must be done in accordance with local ordinances, which may differ
in some ways from this owners manual.
Please note that the installation instructions refer to specific makes of controls and
accessories. Equivalent makes and models of these devices may be used successfully. The
installing contractor is the best judge of a system's specific requirements, as well as of local
availability of different devices. However, be certain that no substitutions are made for the
standard safety equipment, control panel and relief valves that we have supplied with the boiler.
The installation of these devices is absolutely necessary for safe operation of the boiler and
protection of the heating system.
Every effort was made during the writing of this manual to produce a guide which would be
easy to understand and contain all pertinent information.
NOTE: 1. We urge you to thoroughly familiarize yourself with this manual before installing
and operating the boiler.
2. Please keep this manual handy for future reference.
Included is information which will make operation of your new boiler an easier and more enjoyable
experience. If questions arise during installation, operation, or maintenance, or if you are in doubt
about any aspect of your boiler, please contact your installer, your dealer or TARM USA, Inc.
1

INTRODUCTION AND IMPORTANT INFORMATION (continued) PAGE 2
_____________________________________________________________________________________________________________________________________________________________________________________________________
What is the HS-Tarm EXCEL boiler? The EXCEL is a multi-fuel boiler designed and
constructed for the highly efficient combustion of firewood, oil, propane or natural gas. Do not burn
other fuels in the EXCEL.
WOOD COMBUSTION
Very important to the function and design detail is the wood fire combustion draft fan. The
primary and secondary air are both fed through air ducts into the firebox with the precise velocity
necessary for proper combustion.
The primary air is introduced into the top of the firebox. The secondary air is forced through
the refractory, where it is heated and distributed through two channels and many air nozzles on
each side of the center slot in the refractory. The secondary air is injected with high velocity
directly into the hot gases and flame to complete the wood combustion.
A very important design detail of the EXCEL is the refractory and combustion tunnel in the
heart of the boiler. These refractory blocks ensure that the wood combustion temperatures exceed
1800°F, several hundred degrees more than is needed to burn wood smoke and gas. This
combustion is extremely efficient and virtually smoke and creosote free.
The optimal and environmentally desirable combustion of wood with the highest efficiency
demands the correct proportional mixture of gas from the wood and combustion air from the fan.
The heat is transferred to the boiler water by means of heat exchange tubes located behind
the firebox and refractory combustion tunnel.
OIL OR GAS COMBUSTION
The oil or gas burner supplied with your EXCEL boiler has completely separate combustion
and heat exchange chambers from those for the wood. Turbulators in the heat exchange tubes,
and the use of high efficiency burners, results in fossil fuel utilization as good as or better than
most high efficiency boilers available in our North American market.
RESPONSIBILITY
The user is responsible for the operation of the boiler and that the guidelines in this manual
for firing are observed and followed. Not following the instructions can result in lower efficiency
and environmental pollution because the desired clean flue gas is not obtained. Furthermore,
misapplication may reduce the boiler’s life. The correct operation and installation is the best
guarantee of a properly operating boiler with a long lifetime and less pollution. It is a prerequisite
that the user has the will and the right attitude towards firing with wood. In spite of everything,
some work must be done to benefit from this environmentally desirable and economically profitable
method of heating your home.
2

INTRODUCTION AND IMPORTANT INFORMATION (continued) PAGE 3
______________________________________________________________________________________________________________________________________________________________________________________
MAINTENANCE
It is also the responsibility of the user that the boiler be cleaned and maintained according
to:
•normal practice,
•the instructions of this manual,
•instructions for the controls or equipment, and
•other circumstances described in the written warranty.
SAFETY
If an unsafe condition occurs it is to be repaired as soon as possible by a qualified service
person. Outlets, ventilating ducts, fresh air conduits, and others must not be closed or clogged up.
3

(Intentionally left blank) PAGE 4
4

INTRODUCTION AND IMPORTANT INFORMATION (continued) PAGE 5
______________________________________________________________________________________________________________________________________________________________________________________
PLEASE READ THIS PAGE CAREFULLY!
This boiler has a limited warranty which is included with
your boiler as a separate enclosure. To validate your
warranty, detach the postcard, fill in all information
requested, and return the card to TARM USA, INC.
Please always raise questions or warranty claims with
your installer/dealer who delivered the boiler to you.
The installer/dealer then passes the claim on to TARM
USA, INC., IF NEED BE. However, claims may also be
raised directly with TARM USA, INC.
General Information
Please read the literature enclosed by the
manufacturers regarding the various accessory devices.
These devices are warranted by the manufacturer, NOT
by TARM USA, INC. These accessory devices must be
installed and used according to the recommendations of
the manufacturer unless instructed otherwise in this
manual.
NOTE: All boilers must be installed in accordance with
national, state and local plumbing, heating and electrical
codes, and the regulations of the serving electric, water
and gas utilities.
Plumbing diagrams in this manual are for basic
information only and may not show all valves, vents,
fittings, etc that are normally included in finished boiler
installations.
All systems should be designed by competent
contractors, and only persons knowledgeable in the
layout and installation of heating systems should
attempt the installation of any boiler.
It is the responsibility of the installing contractor to see
that all controls are installed correctly and that they are
operating properly when the installation is complete.
If any fans are used in the fuel storage area, they should
be installed so as not to create negative pressure in the
room where the solid-fueled burning appliance is
located.
Please read carefully the section “OPERATION
DURING SUMMER”. Failure to protect your boiler from
condensation during the warmer months MAY VOID
YOUR WARRANTY! SEE PAGE 48.
Do not use this boiler if any part has been under water.
Immediately call a qualified service technician to inspect
the boiler and to replace any part of the control system
and any gas control which has been under water.
Homeowners should read and familiarize themselves
with “BOILER OVERHEATING” and “OPERATING IN
THE EVENT OF POWER FAILURE”. SEE PAGES 53
TO 55.
WARNING: Do not use gasoline, kerosene or other
flammable liquids to start or maintain solid-fuel fires in
your boiler. Serious burns and property damage may
result.
WARNING: Do not store any combustibles, including
fuel for the boiler, within the fire clearances specified
below in “Installation Information”. Keep fuel clear of the
fuel-loading and ash-removal access areas.
WARNING: This boiler is designed to burn wood. Both
hard and soft woods may be used, but under no
circumstances should you burn coal or small pieces of
wood or wood waste that can fall through the center slot
in the refractory causing a blockage.
Installation Information
The boiler must be connected to a tile-lined masonry flue
or other Type HT approved chimney. No other appliance
should be connected to this flue. Consult your local
building inspector for chimney requirements, and install
the boiler in accordance with all applicable codes.
The boiler requires adequate fresh air supply for efficient
and safe operation. For more information refer to NFPA
Standard #31 and page 6.
The boiler must be positioned to provide minimum
clearances from combustibles or combustible surfaces
as follows: LEFT SIDE=24”; RIGHT SIDE=12”; TOP
AND REAR=18”; FRONT=36”.
There must be a minimum clearance of 18” between
smoke pipe and all combustible surfaces.
Use the wicking and pipe dope supplied with the boiler to
seal all threaded connections to the boiler and Termovar.
When references are made to tapping numbers, please
refer to Page 9.
Do not use self-contained, non-electric zone valves on
the main heating zone as it is to be used as the
overheat/dump zone.
Do not use any radiant floor tubing that does not
have an oxygen barrier with any EXCEL Boiler.
Installation must conform to ANSI/NFPA standard #211
MINIMUM REQUIRED FLUE SIZE – 8”X 8” TILE OR 6” ROUND
MINIMUM DRAFT -- .05 IN/WG DURING NORMAL OPERATION
5

OUTSIDE COMBUSTION AIR PAGE 6
______________________________________________________________________________________________________________________________________________________________________________________
1. Provision for outside combustion air may be necessary to ensure that fuel-burning appliances
do not discharge products of combustion into the house. Guidelines to determine the need for
additional combustion air may not be adequate for every situation. If in doubt, it is advisable to
provide additional air
2. Outside combustion air may be required if:
(a) the solid-fuel-fired appliance does not draw steadily, experiences smoke roll-out, burns
poorly, or back-drafts whether or not there is combustion present:
(b) existing fuel-fired equipment in the house, such as fireplaces or other heating appliances,
smell, do not operate properly, suffer smoke roll-out when opened, or back-draft whether or
not there is combustion present:
(c) any of the above symptoms are alleviated by opening a window slightly on a calm
(windless) day:
(d) the house is quipped with a well-sealed vapor barrier and tight fitting windows and/or has
any powered devices which exhaust in the house.
(e) there is excessive condensation on windows in the winter; or
(f ) a ventilation system is installed in the house.
If these or other indications suggest that infiltration air is inadequate, additional combustion air
should be provided from the outdoors.
3. The HS-Tarm boilers are not suitable for direct connection of outside air. The outside air
should be ducted to no closer than 12” from the boiler. A 6” duct should be large enough for all
HS-Tarm boilers unless the duct run is over 25 feet.
4. A mechanical ventilation system: If the house has a mechanical ventilation system (air change
or heat recovery), consider the following two issues:
( I ) the ventilation system may be able to provide sufficient combustion make-up air for
the solid-fuel-fired appliance; and
(II ) the householder should be informed that the ventilation system may need to be re-
balanced by a ventilation technician after installation of the solid-fuel-fired appliance.
5. It is normal practice to terminate the outside combustion air duct at floor level.
6

TABLE OF CONTENTS PAGE 7
_____________________________________________________________________________________________________________________________________________________________________________________
Introduction and Important Information
Introduction............................................................. 1
Wood Combustion ...................................................2
Oil and Gas Combustion ..........................................2
Responsibility .......................................................... 2
Maintenance ............................................................3
Safety .......................................................................3
Please Read This Page Carefully! ...........................5
Outside Combustion Air.………………………………6
Table of Contents
Table of Contents ....................................................7
Features and Specifications
Basic Features ................................................….....8
Tapping Diagram and Specifications ..................... .9
Installation
Before You Begin ...................................................10
Planning the Installation .........................................10
Chimney Requirements .....................................11-12
Boiler Placement and Cleaners. .............................13
Boiler Packing List ..................................................14
Boiler Set-Up ..........................................................15
Initial Assembly ...................................................15
Jacket and Door Assembly.…............................15-17
Installation of Fill Valve Backflow Preventer,
Pressure / Temperature Gauge, Pressure Relief
Valve and low water cut-off….……………………....18
Piping View……..…………………….……………… 19
Installation of Domestic Hot Water Coil …......…20-21
Control Panel and Fan Assembly .…......................22
110 Volt Connections To House, Burner,
and Circulator ..........................................…. …….23
Field Wiring Diagram … ................................24-24.1
Wiring Schematic ….............................................25
Loading Door Smoke Flap………………………….17
Controls Operational Sequence ……………….26-27
By-Pass Damper Adjustment & Turbulators…......28
Installation of Back-Up Fuel Burner… ..................28
Oil Burner Installation .......….......................….28-29
Gas Burner Installation ..............….......................29
Piping to Heat Distribution System..................…..31
Hot Water Baseboard Heating ..…....................…31
Overheat Loop………………………………...…….31
Termovar Tempering Valve ....…........................32
Radiant Floor Heat ...................…........................33
Hot Air Heating .........................…........................33
Filling Your Boiler ......................….......................33
Operating Your Boiler
Operational Overview ............................................34
Before You Begin ...................................................34
Flue Gas Sensor and Time Delay …......................34
Aquastat Control Settings-Winter ..........................32
Operating Your Boiler
Modes of Operation………………………….......36-37
Use of the By-Pass Damper .............................….37
Installing the 339N Thermometer.………………….37
A Word About Wood Fuel ................................…..38
Starting Your Tarm EXCEL Boiler .….....................40
Lighting the Boiler for the First Time ..…......…..40-41
Primary Air Adjustment ……...................................41
Secondary Air Adjustment ..….....................…..41-42
Regular Stoking of the Boiler..................................43
If the Draft Fan is “OFF” .….…...............................44
If the Draft Fan is “ON” ...……..............................44
Heat Demand on the Boiler ...................................44
Operational Procedures..NO HeatTank ................45
Operational Procedures..WITH Heat Tank........46-47
Combustion Process ......................................…....47
Heat Output ...........................................................48
Burn Time ..............................................................48
Operation During Summer...NO Heat Tank .…......48
Shutdown Procedures .................................……...49
Operation During Summer…WITH Heat Tank……49
Aquastat Control Settings During Summer ....…...50
Maintaining Your Boiler
Ash Removal .........................................................51
Smoke Box & Heat Exchange Tube Cleaning........51
Draft Fan and Air Damper Cleaning .................51-52
Loading Door .........................................................52
Cleaning the Primary Air Ducts ..............................52
Smoke Pipe Cleaning and Inspection ....................52
Check for Creosote Buildup ...................................52
Troubleshooting
Troubleshooting ......................................................53
Boiler Overheating ........................................... 53-54
To Cool a Severely Overheated Boiler ...................54
Operating in the Event of a Power Failure ............ 55
Problems -- Symptoms, Cause, & Remedy...... 56-57
Tarm EXCEL Listing Label
Tarm EXCEL Listing Label ....................................59
Spare Parts Diagram
EXCEL 2000..........................................................60
EXCEL 2200..........................................................61
7

FEATURES AND SPECIFICATIONS PAGE 8
______________________________________________________________________________________________________________________________________________________________________________________
BASIC FEATURES
∇Separate Firetube Heat Exchangers ∇72 gallons of water (model 2200)
ensures maximum efficiency with either surrounds all sides of the firebox and
fuel. Easy accessibility for cleaning. fire tubes for maximum heat transfer.
∇1/4 inch
Boiler Plate Steel.
∇Beckett Oil or Carlin Gas Burner.
The world’s largest selling oil burner.
Oil efficiency of up to 86% is as good
or better than most single fuel boilers.
∇Cast iron doors and door
frame.
∇Enameled Jacket. Maintenance
free jacket. A full 2” of insulation
keeps the heat where it belongs.
Fit and finish is reminiscent
of a fine car.
8

FEATURES AND SPECIFICATIONS PAGE 9
9

INSTALLATION PAGE 10
BEFORE YOU BEGIN
SAFETY NOTICE: READ THIS ENTIRE MANUAL BEFORE YOU INSTALL AND
OPERATE YOUR NEW BOILER. FAILURE TO FOLLOW THE
INSTRUCTIONS MAY RESULT IN PROPERTY DAMAGE OR
BODILY INJURY.
Contact local building or fire officials as the installation must be done in accordance with local
ordinances, which may differ in some ways from this manual. Your local building official is the
final authority for approving your installation as safe and determining that it meets local and
state codes.
The metal listing label permanently attached to the lift ring and or the top of the boiler under the
jacket and insulation of your Tarm EXCEL boiler (also shown on page 59 of this manual)
indicates that the boiler has been tested to current UL and CSA standards and gives the name
of the testing laboratory. Clearance information also is printed on this label. When the boiler is
installed according to the information both on the label and in this manual, local authorities in
most cases will accept the label as evidence that the installation meets codes and can be
approved.
IMPORTANT: Failure to follow these installation instructions and guidelines may result in a
dangerous situation. Follow the instructions and do not allow makeshift
compromises to endanger property or personal safety.
PLANNING THE INSTALLATION
NOTE: Your heating system design and installation should be done by a qualified local
professional contractor.
Only persons knowledgeable in the layout and installation of heating systems should attempt
the installation of any boiler. Proper planning and installation of your heating system and boiler
will help greatly to assure many years of safe, dependable, comfortable and economical
heating.
10

INSTALLATION (continued) PAGE 11
______________________________________________________________________________________________________________________________________________________________________________________
CHIMNEY REQUIREMENTS
The chimney is one of the most critical factors in the successful operation of any solid fuel
heater, including your HS-Tarm boiler. A good chimney will provide a continuous and
dependable draft to pull the vented gases out of your house.
NOTE: The boiler must be connected to a lined masonry or a Factory-Built Type HT
approved chimney in good condition. If the boiler is connected to a dirty or
inadequate chimney, it can present a serious fire hazard. All chimneys and
connections must conform to NFPA standard #211. Please read the following
before connecting the boiler to the chimney.
•No other appliance may be connected to the flue serving this wood boiler. Consult your
local building inspector for chimney requirements and install the boiler in accordance
with all applicable codes.
•Best draft will be provided by a chimney which has an 8” ID round flue or an 8” x 12”
flue, is 20 ft. to 30 ft. in height and which is located inside the heated structure. The
EXCEL boilers may operate satisfactorily on a minimum flue size of 6” round or an 8”X8”
flue 20’ in height. The chimney must be capable of maintaining a breech draft of 0.05”
WC during normal boiler operation.
11

INSTALLATION (continued) PAGE 12
______________________________________________________________________________________________________________________________________________________________________________________
CHIMNEY REQUIREMENTS (continued)
•Your Tarm EXCEL boiler is designed to burn efficiently and nearly smoke-free, but under
certain conditions creosote deposits may form in your chimney. Chimneys that are too
large, are located outside, are poorly insulated, or have bends in the flue passages are
especially prone to problems with draft and/or creosote.
•If the chimney is too short and/or there is not enough draft, it may be necessary to add a
draft inducing fan. However, we suggest that you determine first whether there are any
easy solutions to your draft problems before you invest in a draft inducer.
•DRAFT REGULATORS: Strong wind blowing across the top of a chimney or a chimney
which has a particularly strong natural draft can cause the Tarm EXCEL boiler to
continue burning (heating) when the draft fan is off. This should not be allowed to
happen because it can cause creosote formation and/or overheating of the boiler. The
solution to this problem of excessively high or irregular draft is to use a barometric draft
regulator in the smoke pipe, which we strongly recommend. A Barometric Draft
Regulator is required for a proper oil burner installation, and a duel-acting Barometric
Damper with a manual reset spill switch is required for a gas burner installation.
•TURBULATORS: may be added to the wood burning heat exchange tubes increasing
heat exchange efficiency and restricting draft. However, there is some risk that
turbulators will cause the exhaust gases to cool too much which will lead to undesirable
condensation in the chimney connector and/or flue. Turbulators are usually not
recommended for wood burning unless the boiler is installed with a heat storage system.
•The smoke pipe connecting the Tarm EXCEL boiler to the chimney flue should be black
or stainless steel, have a minimum thickness of 24 gauge, and must rise a minimum of
1/4” per foot run toward the chimney. Smoke pipe sections must be attached to one
another with a minimum of three sheet metal screws.
•MASONRY CHIMNEYS: Masonry chimneys must be lined, either with code-approved
masonry or pre-cast refractory tiles, stainless steel pipe, or a “poured-in-place” liner. Do
not use an unlined chimney.
•An existing chimney should be examined for cracks, loose mortar, other signs of
deterioration, and blockage. Repair any defects or reline the chimney before use.
•The chimney’s clean-out door must seal tightly.
•A newly-built masonry chimney must conform to local or national codes.
•FACTORY-BUILT CHIMNEYS: Factory-Built chimneys must be tested and listed for
use with solid-fuel burning appliances to the High-Temperature (H.T.) Standard
(2100°F), UL 103, for the United States and High Temperature (650°C) Standard ULCS-
629 for Canada. Factory-Built chimneys must be installed as per the manufacturers
instructions.
12

INSTALLATION (continued) PAGE 13
______________________________________________________________________________________________________________________________________________________________________________________
BOILER PLACEMENT REQUIREMENTS
•The boiler must be placed on a non-combustible floor, such as, a level concrete slab.
Many owners choose to raise the boiler 8” above the floor to make loading and cleaning
more convenient. Four inch solid concrete blocks are often used for this purpose.
•Boiler placement should permit as direct a chimney connection as is practical.
Consideration needs to be given to which boiler flue collar location you will be using -
the rear or the right side. In some cases, local code requires use of a separate flue for
each of the wood-fired and gas-fired boiler sections. In this case, you will need two
separate chimney flues and both rear the right side boiler flue collars. Tarm USA has flue
collars available should you need a second one. The EXCEL has been tested and listed
for use with a single chimney flue with either gas or oil backup, but local code dictates
what you will need to use.
•Refer to the diagram below for the required minimum clearances between the boiler and
combustibles or combustible surfaces. Smoke pipe clearances also are shown.
13
Code
Approved
Chimney
Minimum
Dimensions
8”x 8” flue
20 Feet
High
18” from rear of
boiler and from
smoke pipe to
all
combustibles
Boiler Clearances
Front--36”
Rear--18”
Left Side(burner)--24”
Right Side--12”
Boiler must have
adequate fresh
air supply
18” to Combustibles from smoke pipe
18”to Combustibles from top of
boiler
Barometric draft regulator
36” to Combustibles
Non-combustible floor

INSTALLATION (continued) PAGE 14
__________________________________________________________________________________________________________________________________________________________________________________
BOILER PACKING LIST
NOTE: PLEASE CHECK OFF THE FOLLOWING ITEMS ON THE LISTS BELOW:
•A complete Excel 2000 series boiler, as shipped from our warehouse, consists of five (5)
pieces, as follows:
1. BOILER BODY
Ash Removal Pan
Ash Removal/Scraper Tool
Cleaning Brush
Installation Manual & Warranty Package
Box Containing Draft Fan
Flue Outlet
Turbulators – 6/EXCEL 2000, 8/EXCEL 2200 – should be installed in oil/gas heat exchange tubes
2. JACKET BOX
One (1) Front Panel
Four (4) Side Panels (2 left & 2 right)
One (1) Rear Panel
Two (2) Top Panels (front & rear)
Six (6) Pieces Steel Zip Strips
3. DOOR BOX
Loading Door
Ash Door (with viewing port)
By-Pass Lever Bakelite Knob (larger)
Secondary Air Bakelite Knob (smaller)
Plastic Bag Containing Eight (8) Door Mounting Bolts
Bakelite Handles for Doors (2)
One (1) Can of Door Mounting Cement and Applicator (Stovex)
4. SAFETY CONTROL PACKAGE
Boiler Pressure Relief Valve (#10-102-05, 30 psi)
Boiler Control Panel with Pre-Wired Honeywell Controls
Draft Fan Low Temp Cut-Off Control
Two (2) Pieces Immersion Well, 3/4 inch
Pressure/Temperature Gauge
Coil Pressure Relief Valve (#17-402-02, 100psi)(optional)
5. BURNER BOX
Oil Burner For EXCEL 2000 includes I GPH nozzle – For EXCEL 2200 includes 1.25 GPH nozzle
Or
and F-6 Retention Head.
Gas Burner Includes a duel acting Draft Regulator and a Manual Re-set spill switch.
•Please contact your dealer immediately if any of the above items are missing!
•TARM USA, INC. reserves the right to substitute equivalent equipment for any of the
controls and accessories specified above.
14

INSTALLATION (continued) PAGE 15
___________________________________________________________________________________________________________________________________________________________________________________
BOILER SET-UP
Initial Assembly
1. Unpack the items in the boiler body, door box and jacket box and check off the items
enclosed against the packing list on page 14. Be sure to inspect all packages for damage
from shipping. All shipping damage claims must be made with the carrier at the time of
delivery.
2. Place the boiler in its planned location on a non-combustible floor and positioned for the
proper chimney connection. The guidelines on pages 11, 12 and 13 of this manual should
be observed!
3. Using the leveling bolts located on each corner of the base, level the boiler both front to rear
and side to side.
4. Remove the sheet metal retainer plate from the lower door opening. Save the two bolts to
use when attaching the burner. Inspect the refractory chamber bricks for damage or cracks.
Check the bottom refractory combustion tunnel brick push it fully to the rear if it has shifted
during shipping. There is no need to remove the large rectangular brick in the lower door,
unless you believe there is damage to the refractory. If you remove the rectangular brick, be
careful not to damage the donut gaskets on top.
5. Locate the secondary air adjustment lever at top left corner of lower door opening and fold it
out so it will protrude through the jacket opening when the jacket is assembled.
6. It is not necessary to remove the wooden shipping braces on the boiler floor. They will burn
up within a few hours of initial firing.
7. Install the Domestic Hot Water Coil if used. (optional)
Jacket and Door Assembly
NOTE: Prior to jacket installation, remove the appropriate jacket knockouts and plug any extra
tappings (see tapping diagram on page 9).
NOTE: The boiler comes with an eight-piece enameled jacket. The sides of the jacket are
assembled by sliding the pre-formed steel strips down over the folded, vertical edges of
the panels. For installations with low ceiling clearance, the jacket zip strips can be
conveniently bent at the center point.
NOTE: The boiler body, front jacket panel and the door frames form a three(3) layer sandwich
in final assembly.
NOTE: Before mounting the doors, for ease of handling, separate the doors from the door
frames by pulling the hinge pins. Make sure to keep the doors and frames matched.
The doors hinge to the right and the bottom door has the observation port.
1. Locate and position the secondary air control lever so that it will protrude through the cut-out
in the front jacket panel.
2. Install the two 3/4 inch control wells into the 3/4 inch tappings (#10 and #11) on the side
of the boiler. Use 5 turns of teflon tape to seal the fittings correctly.
15

INSTALLATION (continued) PAGE 16
___________________________________________________________________________________________________________________________________________________________________________________
Jacket and Door Assembly (continued)
3. Install the left front jacket panel into place (oil burner side). Attach to front panel,
using one (1) zip strip. Engage jacket with bracket on boiler base.
4. Install the left rear jacket panel using the following sequence:
a. Remove the four nuts and burner plate from the rear left side of boiler,
b. Install one door mounting gasket over the burner flange,
c. Place the left rear side panel into position and slide zip strip to fasten it to left front
panel. Engage the jacket panel with the bracket on the boiler base.
d. Place another door mounting gasket over the jacket (at burner flange), and
e. Re-install burner plate using four nuts--Hand tighten only.
5. Install right front jacket panel into place. Remove the access panel for the optional
Domestic Coil if it is to be installed. Engage jacket with bracket on boiler base.
6. Install right rear panel.
HINT: Be sure you have the flue outlet in its proper place prior to placing this panel.
NOTE: You may use either the right or the rear flue outlet, if you need separate flue outlets
for each fuel, contact Tarm USA, Inc.
7. Install rear jacket panel. Prior to placing this panel, remove the plug in tapping #4 if you
are using it as your drain/feed.
HINT: Heating the plug prior to attempting to remove it will make the job much easier.
8. Install top front and rear panels by putting into place and pressing downward.
9. Seal the door frames to the face of the boiler with Stovex or furnace cement using the
following procedure:
a. After thoroughly mixing the Stovex compound, place a bead of Stovex on the
boiler flanges and the doorframes. Install the front jacket panel. Mount the
doorframes in place by just catching the threads, leaving the door loose.
b. From inside the door opening force additional Stovex into the space between the
doorframes and the boiler.
c. Check for proper jacket alignment as you tighten the studs evenly. Excess Stovex
will be squeezed out leaving a perfect seal at the doors. Immediately wipe excess
cement from the jacket with a damp rag.
10. Attach the doors to the door frames by inserting the hinge pins. Install the round bakelite
knob on the secondary air control lever.
11. Tighten nuts on burner mounting plate (left side of boiler).
16