DeDietrich GT 210 A User manual

GT 210 A
Oil-Gas Fired Hot Water Boiler English
11/03/09
Warning:
Before putting the boiler into operation read this manual
carefully.
Warning:
The operating manual is part of the documentation that is
delivered to the installation’s operator. Go through the
information in this manual with the owner/operator and
make sure that he or she is familiar with all the necessary
operating instructions.
Notice:
This manual must be retained for future reference. Improper
installation, adjustment, alteration, service or maintenance can
cause injury, loss of life or property damage. Refer to this
manual. For assistance or additional information consult a
qualified installer, service agency or the fuel supplier.
Installation & Operating Manual
Please Read & Save this Manual for Future Reference
8227-4096-F
8227-4096-F

2GT 210 A 08/0121/08/06 - 94863106 - 82274096E
Guideline of Notices
Warning:
indicates presence of hazards that can cause, if not
avoided, severe personal injury, death or substantial
property damage.
! Caution:
indicates presence of hazards that will or can cause, if not
avoided, minor personal injury or property damage.
Notice:
Application comment for optimum use of equipment and
adjustment as well as useful information.
ZReference to an other instruction book.
Observe the following symbols
DANGER
due to explosion of gas.
- Work only on gas components when you have a license to do so.
- Note that the assembly of gas and vent connections, the initial
start-up, the electrical connections, the maintenance and service
can only be performed by a licensed service contractor or
technician.
DANGER
due to electricity.
- Prior to doing any work on the heating system, disconnect all
electrical power to the boiler at the emergency switch.
- It is NOT sufficient to shut off only the boiler control!
! CAUTION!
SYSTEM DAMAGE
due to improper installation.
- Observe local and state codes as well as common industry
practices during the installation and operation of the heating
appliance.
! CAUTION!
SYSTEM DAMAGE
due to inadequate cleaning and maintenance.
- Aboilercleaningandmaintenanceshouldbeperformed annually.
Verify complete system operation at the same time.
- Correct the problem immediately to prevent damage to the
system!
! Caution:
Refer to User’s Manual regarding the carcinogenic hazard of
crystalline silica that may be found during installation, servicing
and removal of this boiler.
Safety Considerations
Please observe the following safety instructions.
Read this manual carefully.
Correct installation and adjustment of the burner and the control
panel is a precondition for safe, efficient operation of the boiler.
Read this manual and the specifications on the safety label carefully
before attempting to put the burner into operation.
Do not store or use gasoline or other flammable liquids in
the vicinity of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS:
- Do not try to light any appliance.
- Do not touch any electric switch, do not use any phone in
your building.
- Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions.
- If you cannot reach your gas supplier, call the Fire
Department.
Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
Warning:
Improper installation, adjustment, and/or operation could
cause carbon monoxide poisoning resulting in injury or
death.
This product must be installed and serviced by a
professional service technician who is experienced and
qualified in hot water boiler installation and gas
combustion.
! Caution: Strict compliance with these instructions is a
precondition for the correct operation of the boiler.
! IMPORTANT
Service on this boiler should beundertakenonlyby trained and
skilled personnel.
Keep boiler area clear and free from combustible materials,
gasoline and other flammable vapors and liquids.
Do not place any obstruction in the boiler room that will hinder
the flow of combustion and ventilating air.
Read these instructions carefully before proceeding with the
installation of boiler. Post instructions near boiler for reference
by owner and serviceman.
Maintain instructions in legible condition.
"Installation of this equipment must be in accordance to all local and national codes or authorities havingjurisdiction”
[Canadian Installations]
•CSA B149 for gas fired boilers
•CSA B139 for oil fired boilers
[USA Installations]
•NFPA 54/ANSI Z223.1 for gas fired boiler
•NFPA 31 for oil fired boilers.
ATTENTION-WARNING: 
The boiler must be connected to a
venting system that will safely discharge
all flue gas to the outside in a safe and
effective manner.
Do not use gasoline, crankcase draining,
or any other oil containing gasoline.
The boiler is certified to burn fuels as
listed on the boiler rating plate. Never
burn garbage or paper in the unit, and
never leave combustible materials in the
vicinity of the boiler.

3
01/08/08 - 82274096FGT 210 A
Contents
Regulations and guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
1 Uncrating . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2 Technical specifications of boilers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3 Main Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2 Aeration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3 Levelling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
4 Water connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Chimney connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
1 Flue size. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
2 Connecting to the flue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Connecting the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Electrical connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
1 Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
2 Domestic hot water (GT 2100). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
3 Precautions required in the case of long boiler stops (one or more years) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
4 Precautions required if the heating is stopped when there is a risk of freezing . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5 Identification plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Spare parts - GT 210 A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

4GT 210 A 21/08/06 -94863106 - 82274096E
Regulations and guidelines
The installation must conform to the requirements of the authority
having jurisdiction or, in the absence of such requirements, to the
National Fuel Gas Code, ANSI Z 223.1 / NFPA 54. In Canada,
installation must be in accordance with the requirements of CAN/
CGA B149.1 or 2 Installation Code for Gas Burning Appliances and
Equipment. Where required by the authority having jurisdiction, the
installation must conform to the Standard for Controls and Safety
Devices for Automatically Fired Boilers, ANSI/ASME CSD-1.
Install CO detectors per local regulations. Boiler requires yearly
maintenance, see "Connecting the burner", page 24.
Onlyaqualifiedinstallingcontractormaycarryouttheinstallation,the
initial start-up, the connection for fixed gas and vent gas, and
conversion to another type of gas. The hot water distribution system
must comply with the applicable codes and regulations. When
replacing an existing boiler, it is important to check the entire hot
water distribution system to insure safe operation. Maintenance and
cleaningmustbecarriedoutatleastonceayearby atrainedservice
technician. The entire installation must be tested for proper
operation. Any defects detected must be fixed immediately.
General
1 Uncrating
Uponarrival,check shipment to ensure all parts havebeenshipped.
Inspect all items for delivery damage. Report all damage and short-
ages to the delivery carrier. Report any damage and shortages to
the Distributor.
Boiler GT 214 A GT 215 A GT 216 A GT 217 A GT 218 A
• Unassembled boiler body
- front section 11111
- intermediate section 23456
- rear section 11111
- set of assembly rods --111
- accessory package DR 64 DR 65 DR 66 DR 67 DR 68
• Assembled boiler body
with accessories DR 84 DR 85 DR 86 DR 87 DR 88
Control panel
DR 90 DR 90 DR 90 DR 90 DR 90
Casing
DR 74 DR 75 DR 76 DR 77 DR 78
8800N072
The GT210A series is a cast iron sectional boiler designed for space and domestic and hot water heating requirements, the
boiler is automatically fired and controlled by the boiler control panel. The boiler is certified to burn all the fuels as listed on the rating
plate by separate burner. The boiler must always be connected to a vent system that will discharge all flue gases to the outside
in a safe and effective manner. Refer to the specific sections in the manual for further details.

5
21/08/06 - 94863106 - 82274096E GT 210 A
2 Technical specifications of boilers
Item Unit GT 214 A GT 215 A GT 216 A GT 217 A GT 218 A
Firing Sequence Consult Burner Technical Data
[CSA] - Gas Input MBH 173 224 274 324 361
kW 50.7 65.7 80.3 95.0 105.8
[CSA] - # 2 Fuel Oil Input US GPH 1.20 1.55 1.90 2.25 2.50
[CSA] - Output [Gas-Oil] MBH 147 190 233 276 306
kW 43.1 55.7 68.3 80.8 89.8
[NET] - Output [Gas-Oil] MBH 128 165 203 240 266
CastIronsections #45678
Flue-waybaffles #32222
Water capacity US Gal 9.5 11.4 13.2 15.1 16.9
Liter3643505764
Water resistance
[∆t = °F]
18° F Ft. H2O0.82 1.34 1.99 2.77 3.4
27° F Ft. H2O0.365 0.596 0.887 1.23 1.51
36° F Ft. H2O0.204 0.335 0.498 0.693 0.85
Combustion chamber
Dimensions
Diameter
[equivalent] Inch 12.17
mm 309
Depth Inch 17.6 22.6 27.6 32.6 37.6
mm 446 573 700 827 954
Volume ft31.1653 1.4831 1.8009 2.1188 2.4366
m30.033 0.042 0.051 0.060 0.069
MAWP [Water] PSI ASME IV Rating Class 30 - (60 PSI) [See Canadian Provincial CRN approvals]
Min. Safety Relief Capacity MBH 147 190 233 276 306
DR 90 Panel
Electrical connection V/P/H 120/1/60
Max. Water Temp. Safety Limit
[MR] °F 230
°C 110
Operating Water Temperature
Range °F 86 - 185
°C 30 - 85
Chamber resistance Inch w.c. 0.08 - 0.16 0.20 - 0.24 0.08 - 0.24 0.16 - 0.24 0.24 - 0.32
mbar 0.2 - 0.4 0.5 - 0.6 0.2 - 0.6 0.4 - 0.6 0.6 - 0.8
Gas-Vent Category # I, II - III or IV
BoilerVentconnectionInch66777
Weight (dry) lb 481 567 655 741 827
kg 218 257 297 336 375

6GT 210 A 01/08/08 - 82274096F
3 Main Dimensions (less applied burner)
221/16
387/8
2" (1)
7
7/16
2911/16
77/16
2315/16
87/16
A47/16 27/8
135/8
97/16 14
==
heating
outlet
DØ
heating
return
DØ
41/2 41/2
5
1/8
113/16
6
3/16
5
9/16
C
6
1/2
==
BØ
flue gas
nozzle
143/16
1
2
3
4
5
Model
GT 214A
GT 215A
GT 216A
GT 217A
A*
23 5/16 in.
28 5/16 in.
33 5/16 in.
38 5/16 in.
B = ø
6
6
7
7
C
16 11/16 in.
21 11/16 in.
26 11/16 in.
31 11/16 in.
D
1¼ in.
1 ¼ in.
1 ½ in.
1 ½ in.
GT 218A 43 5/16 in. 736 11/16 in. 1 ½ in.
2
3
Bolt Ø = 5 15/16 inch M8 x 1.25 Bolt diameter threading predrilled, additional
marking @ 6 ¾ inch for larger mounting requirements.
4
5
Combustion head Ø = 4 7/16 inch precut, additional marking @ 5 1/8 inch for larger
combustion heads.
Supply manifold ¾” port for safety relief valve
Supply manifold ¼ inch port for temperature and pressure gauge
Drain port ¾ inch.
1
A* = Dimension will increase with applied burner, consult supplied burner documentation for dimensions
and clearances for service/ combustibles.
D** = OD Dimension will for breeching connection only actual vent diameter sizing will depend on
specific vent application and code requirements.
(1) = Adjustable hot water tank feet for leveling, minimum height =1 3/16 inch, adjustable from 1 3/16 to 2 1/2 inch.

7
01/08/08 - 82274096FGT 210 A
L
X
8227N058A
3/4"-1"
To facilitate boiler transportation into the final installation site, a
special handling tool (package BG 45, no.8218-7723) may be used
as shown to transport the boiler or the boiler on the MLS horizontal
domestic hot water tank. The two 3/4” or 1” pipes are shown are not
supplied with the package BG45, they are supplied by others.
Installation
1 Installing the boiler
The boiler does not require any special housekeeping pad as it has been provided with a study frame and leveling bolts for the
final installation, but a non combustible pad is suggested to keep occasional water away from the boiler. The boiler requires
clearance for combustibles and for servicing, the recommended clearance as shown in the table below. Do not install the boiler
on combustible flooring or carpet.
Proper combustion air and ventilation are required for the boiler, inadequate combustion air or makeup air provisions may result
in foul boiler room odors, incomplete combustion resulting in carbon monoxide (CO) development or creation of negative building
pressure.
Particular attention must be observed if the boiler is operating near or within vicinity of beauty shops, paint shops or
industrial plant where known pollutants, corrosive element may containment affect the quality of combustion air supply, failure to
observe this warnings will result in void of warranty of the boiler and any responsibility of De Dietrich.
Consult local codes for combustion air and ventilation requirements, each installation must comply with all local and national
codes having jurisdiction.
Model L = overall
len
g
th Sides Rear X = Front burner Top Vent
GT214A 29 11/16
[754mm]
GT215A 34 11/16
[881mm]
GT216A 39 11/16
[1008mm]
GT217A 32 11/16
[1135mm]
GT218 33 11/16
[1262mm]
20 inches
[500mm] 20 inches [500mm] 34 inches [800mm]
24 inches
[600mm] in
front of burner
Combustible & Service Clearances
GAS =
6 inches
[150mm]
OIL =
9 inches
[230mm]

8GT 210 A 21/08/06 -94863106 - 82274096E
2 Combustion Air Supply
The location of air inlets in relation to the high ventilation openings
shall ensure that the air is renewed in the entirevolume of the boiler
room. The ventilation shall comply with any applicable national or
local regulations.
Please note that boilers installed in or close to rooms in
which the atmosphere is polluted with chlorine or fluorine
compounds may be subject to high corrosion. For
example: hairdressing salons, industrial premises
(solvents), cooling equipment etc. Boilers installed in such
locations shall not be covered by the warranty.
3 Levelling
Level as shown in the drawing by means of the four adjustable feet
(supplied in the bag of fasteners of the casing) put in place while
assembling the boiler.
(1) basic height 13/8,
adjustment range: 13/8 - 21/2
4 Water connection
13/8(1)

26 GT 210 A 21/08/06 -94863106 - 82274096E
Chimney connection
1Venting the boiler
2 Connecting the Venting to the Boiler
Connecting the burner
Important: the position of the head of the burner in relation
to the door insulating material must be as shown opposite,
particularly if the burner is not a De Dietrich burner.
Note:
Refer to the instructions supplied with the burner for information
relating to the connections, adjustment, commissioning and
maintenance of the burner.
(1) See burner instructions as supplied
12"
43/8
(1)
143/16
4M8 Ø holes on
515/16 Ø
4 markings on 611/16 Ø
47/16 Ø drilling (3)
51/4 Ø cut-out
The boiler must be connected to a venting system that will safely and effectively discharge all flue gases to the outside in an effective
manner.
Do not Co-Vent a Direct Vent or Sidewall vent system boiler, these venting options are specifically designed for single boiler venting,
follow all local and national codes. The sidewall or direct vent termination must be installed in a location which avoid accumulation of
snow or debris that could block the vent terminal. Consult local codes regarding other requirements for the location and installation of
the vent terminal.
Co-Venting with other appliances, must be sized and installed according to CSA B149 & ANSI Z223.1, Any improper operation of
venting system must be corrected and resized according to the tables in part II of national fuel code Z223.1 & CAN CSA B149
installation codes.
Consult local and national codes regarding the sizing of the boiler breeching and chimney venting. See venting section of manual regarding
typical venting systems and requirements.
Consult the documentation of the boiler control and the burner documentation as
supplied regarding setup, wiring and startup.
Do not attempt to start the burner, until all service and clean-out doors are closed and
venting is properly connected to the boiler.
Consult the burner documentation regarding the required maintenance required for
the burner, filters and nozzle.
The entire system should be cleaned and check at least once each heating season.
The fuel tank and supply lines to the burner must be installed
according all applicable National and local codes

3. Boiler Venting & Chimney General
Caution & Warning:
It is advised and recommended that the heating contractor-professional apply vent materials that are approved and agency listed.
Installation of any venting must follow all local codes in conjunction with vent manufacturer instructions and appliance manufacturer
instructions.
All De Dietrich GT series oil-gas fired cast iron boilers are high performance boilers that could operate under all 4 vent
categories as established by ANSI Z21.13/CSA 4.9 Standard. To assist with application where the vent category is
unknown a graph below has been provided to assist you in determining the vent category and what venting materials
would be acceptable. Although the gas vent categories were developed specifically for gas fired appliances, using this
information is helpful for oil fired boilers. It is very important the venting be selected according to the conditions that the
boiler will operate under, minimum and maximum firing conditions of the boiler must be respected. The venting installed
must comply and be certified to all applicable codes and standards for each jurisdiction.
Gas-Vent Category [4] Definitions:
Cat. I
A Boiler, which operates with a non-positive vent (breech) pressure
and flue gas temperatures which avoids excessive condensation
production in the chamber and venting.
Cat. II
A Boiler, which operates with a non-positive vent (breech) pressure
and flue gas temperatures produce condensation production in the
chamber and venting.
Cat. III
A Boiler, which operates with a positive vent (breech) pressure and
flue gas temperatures which avoids excessive condensation
production in the chamber and venting.
Cat. IV
A Boiler, which operates with a positive vent (breech) pressure and
flue gas temperatures produces condensation production in the
chamber and venting.
Chart A
Gas-Fired Appliance Vent Categorization
[According to ANSI Z21.13/CSA 4.9 Gas Boiler Standard]
60
104
148
192
236
280
324
368
412
456
500
Chimney-Vent Pressure
[Inches w.c.]
Chimney-Vent Flue Gas Temperature °F
(Net, Minus Room Temperature)
15
40
64
89
113
138
162
187
211
236
260
6 7 8 9 10 11 12 11 10 9 8 7 6
Carbon Dioxide [CO
2
] Content %
Chimney-Vent Flue Gas Temperature °C
(Net, Minus Room Temperature)
Category I
Typical Vent Types [A,B,C & L]
Category III
Typical Vent Types
[BH, AL294C®, 304-316L SS]
Positive
Negative
Category II
Typical Vent Types
[BH, AL294C®, 304-316L SS]
Category IV
Typical Vent Types
[BH, AL294C®, 304-316L SS]
Chart created by Craig Holdforth
Venting
27

3.1 Boiler Venting – Category I & II Typical Layouts and Requirements.
Caution & Warning:
Improperly sealed venting system could result in carbon monoxide [CO] poisoning; ensure adequate
support and fastening of the system. Ensure venting can safely exhaust all flue gases outside in an effective manner.
These systems must operate under a negative vent pressure condition that is stable.
Warning & Cautions for Co-Venting:
Co-venting with other appliances shall conform latest ANSI Z223.1 & CAN/CGA 149 installation codes, any
improper operation shall be corrected, the common venting shall be sized according to the appropriate tables in Part II of
the above mentioned codes.
Category I Vent Systems Requirements:
1. Flue gas temperatures above the green line shown in chart A.
2. Approved type of venting for category I appliances.
3. A barometric draft control maybe employed as required, but is not necessary for correct boiler operation. Consult
a chimney-vent specialist for correct application and usage.
4. Breeching and chimney vent sized in accordance to local and national codes or by good engineering methods.
5. Vent safety device equipped on the venting or as equipped on burner.
6. Condensate TEE fitting supplied on the boiler breeching as close as possible and be orientated to avoid
accumulation of flue gas condensation in the boiler or venting is also used to determine flue gas emissions.
Category II Vent Systems Requirements:
1. Flue gas temperatures below the green line shown in chart A.
2. Approved type of venting for category II appliances.
3. A barometric draft control maybe employed as required, but is not necessary for correct boiler operation. Consult
a chimney-vent specialist for correct application and usage.
4. Breeching and chimney vent sized in accordance to local and national codes or by good engineering methods.
5. Vent safety device equipped on the venting or as equipped on burner.
6. Condensate TEE fitting supplied on the boiler breeching as close as possible and be orientated to avoid
accumulation of flue gas condensation in the boiler or venting is also used to determine flue gas emissions.
Caution-Warning:
Flue gas condensation is very aggressive and corrosive which could lead to failure of the venting system or drains, consult local and national codes
regarding flue gas condensation disposal. The P-trap assembly must be properly filled with water to avoid escape of flue gas emissions. The flue gas
condensation may require neutralization prior to entering the drain.
Venting
28 GT 210 A 21/08/06 - 94863106 - 82274096E

3.2 Boiler Venting – Category III & IV Vent Systems Typical Layouts and Requirements.
Caution & Warning:
Improperly sealed venting system could result in carbon monoxide [CO] poisoning; ensure adequate
support and fastening of the system. Ensure venting can safely exhaust all flue gases outside in an effective manner.
These systems must operate under a positive vent pressure condition that is stable.
Warning & Cautions for Co-Venting:
Co-venting with other appliances shall conform latest ANSI Z223.1 & CAN/CGA 149 installation codes, any
improper operation shall be corrected, the common venting shall be sized according to the appropriate tables in Part II of
the above mentioned codes.
Category III Vent Systems Requirements:
1. Flue gas temperatures above the green line shown in chart A.
2. Approved type of venting for category III appliances
3. Breeching and chimney diameter sized in accordance to national & local codes or by good engineering methods.
4. Vent safety device equipped on burner [MR]
5. Condensate TEE fitting supplied on the boiler breeching as close as possible and be orientated to avoid
accumulation of flue gas condensation in the boiler or venting.
Category IV Vent Systems Requirements:
1. Flue gas temperatures below the green line shown in chart A.
2. Approved type of venting for category IV appliances
3. Breeching and chimney diameter sized in accordance to national & local codes or by good engineering methods.
4. Vent safety device equipped on burner [MR]
5. Condensate TEE fitting supplied on the boiler breeching as close as possible and be orientated to avoid
accumulation of flue gas condensation in the boiler or venting.
Caution-Warning:
Flue gas condensation is very aggressive and corrosive which could lead to failure of the venting system or drains, consult local and national codes
regarding flue gas condensation disposal. The P-trap assembly must be properly filled with water to avoid escape of flue gas emissions. The flue gas
condensation may require neutralization prior to entering the drain.
29

3.3 Boiler Venting – Side-Wall or Direct Vent Systems Typical Layouts and Requirements.
Caution & Warning:
Improperly sealed venting system could result in carbon monoxide [CO] poisoning; ensure adequate support
and fastening of the system. Ensure venting can safely exhaust all flue gases outside in an effective manner. These
systems must operate under a positive vent pressure condition that is stable. Do not Co-Vent with any other appliance,
the venting system was designed for single appliance venting only.
Side-wall & Direct Vent Systems:
These systems do not fall under any of the gas vent categories, these systems are pre-engineered. These applications of
this venting system must be followed exactly, for safe, efficient and trouble free operation.
System Requirements:
1. Venting sized accordance to direct vent table
2. Type “BH” [AL294C®] vent material
3. Condensate TEE fitting supplied on the boiler breeching as close as possible and be orientated to avoid
accumulation of flue gas condensation in the boiler or venting is also used for determining flue gas emissions.
4. Vent termination TEE
5. Vent safety device equipped on burner [MR]
Vent Termination Locations & Warning – See Section 5.5
Caution-Warning:
Flue gas condensation is very aggressive and corrosive which could lead to failure of the venting system or drains, consult local and national codes
regarding flue gas condensation disposal. The P-trap assembly must be properly filled with water to avoid escape of flue gas emissions. The flue gas
condensation may require neutralization prior to entering the drain.
30 GT 210 A 21/08/06 - 94863106 - 82274096E
Venting

5.4 Boiler Venting – Side-wall or Direct Vent Systems Sizing Tables & Vent Safety Device
•All venting lengths must be calculated to equivalent lengths,
all application must include at least one 90° elbow
•Venting must be a type ‘BH” [AL294C® material]
•Maximum vent length [equivalent] = 30 ft. [9m]
•Minimum vent length [equivalent] 5 ft. [1.5m]
•Maximum number of 90° elbows = 2 or 3 45° elbows, each
90° e bow is equivalent to 10 ft. or straight pipe, the 45°
elbow is equivalent = 5 ft.
•Condensate TEE must be provided [equivalent length = 7 ft.]
•Appliance reducing adapter [equivalent length 3 ft.]
•Sealed combustion, combustion air intake sizing, must be
sized according to the burner manufacturers instructions
•Vent [breeching] pressure shall not exceed 0.20 inches w.c.
[0.50 mbar]
•Vent termination must be a TEE type, follow warning
regarding termination locations. Do not include the
termination TEE length in the vent length calculation.
•Venting shall be sloped, so any condensation developed will
drain through the condensate TEE fitting
•Vent safety device, differential air pressure switch [manual
reset] NC switch opens on rise of pressure.
•Optional function of power burners which can employ an
post purge function to exhaust flue gases for a fixed time [1
minute to 4 minutes maximum]
•Burner employing a standby air damper closed position, the
closed position should be slightly opened to allow hot flue
gases to escape upward through venting and not be
entrapped in the combustion head. Important note, that in
negative building pressures, the observation and odor of flue
gases may enter the boiler room.
Determining vent length [equivalent] Example:
Appliance reducing adapter [x1] = 3 ft.
Condensate TEE [x1] = 7 ft.
12” vent straight vent pipe [x3] = 3 ft.
E bow 90° [x1] = 10 ft.
Termination TEE [x1] = 0 ft.
Length [equivalent] = 23 ft.
GT 210 A Series
Model Boiler Connection
ø
Oil-Gas
Vent ø [∆p] Pressure switch Setting [inches w.c.]
GT 214 A 6 inch 4 inch
GT 215 A 6 inch 4 inch
GT 216 A 7 inch 5 inch
GT 217 A 7 inch 5 inch
GT 218 A 7 inch 5 inch
Set Switch @ 150%
above gas burner gas
manifold or oil burner
head pressure
Venting
31

A VENT SHALL NOT TERMINATE…..
Directly above a paved sidewalk or driveway which serves 2 buildings.
Less than 7 ft. any paved sidewalk or drive way
Less than 6 ft. of a combustion air inlet to any building
Less than 4 ft. above a meter/regulator assembly [horizontally] of the vertical center-line of the
regulator vent outlet to a maximum vertical distance of 15 ft.
Less than 4 ft. of any gas service regulator vent outlet
Less than 1 ft. above grade or normal anticipated snow level for the area
Less than 3 ft. from windows, doors [that can be opened], combustion air supply or any appliance
or building.
Underneath a veranda, porch or deck unless:
1. The veranda, porch or deck is fully open on a minimum of 2 sides beneath the floor
&
2. The distance between the top of the vent
termination and the underside of the veranda, porch or deck is greater than 1 ft.
B149.1
(GAS INSTALLATIONS CANADA)
3.5 All Side-wall and direct Vent termination locations installation precautions:
Warning/Caution:
In all cases avoid potential vent termination locations where excess debris or snow could accumulate and bock the
vent termination to any degree.
Minimum clearance of 4 ft. [1.22m] horizontally from, and in no case above or below, unless a 4 foot [1.22m]
horizontal distance is maintained, from electric meters, gas meters, regulators & relief equipment.
Do Not Co-Vent Any Direct Vent or Sidewall Venting System
WARNING-CAUTION
Consult Local Codes & Authorities for other Requirements not mentioned
A VENT SHALL NOT TERMINATE…..
Directly above a paved sidewalk or driveway which serves 2
buildings.
Less than 7 ft. any paved sidewalk or drive way
Less than 6 ft. from an open-able window, door or mechanical
combustion air supply
Less than 6 ft. of any combustion air inlet
Less than 3 ft. of the vertical centerline of the meter/regulator
assembly on a horizontal plane perpendicular to the regulator
Less than 6 ft. of gas service regulator vent outlet
Less than 4 ft. of oil tank vent or oil tank fill inlet
Less than 1 ft. above grade or normal anticipated snow level for the
area.
Within 6 ft. of a property line
Underneath a veranda, porch or deck
Flue gases are within 6 ft. of combust ble material or any openings of
surrounding buildings.
Less than 3 ft. from an inside corner or L-shaped structure
Where flue gases may be directed towards brickwork, siding or other
construction that may cause damaged from heat or condensate from
the flue gases.
B139-00
(OIL INSTALLATIONS CANADA)
A VENT SHALL NOT TERMINATE…..
Less than 3 ft. of any combustion air inlet source located wi hin 10 ft.
Less than 1 ft. from any obstructions
Less than 1 ft. above grade or normal anticipated snow level for the area.
Over public walkways, driveways or other areas where condensate or
vapor could create nuisance or hazard or could be detrimental to the
operation of regulators, relief's, valves or other equipment
NFPA 54 / ANSI Z223
(GAS INSTALLATIONS USA)
A VENT SHALL NOT TERMINATE…..
Less than 5 ft. from vent outlet of the supply tank
Less than 7 ft. above walkways
Less than 1 ft. from any door, window or air inlet source
Less than 1 ft. from grade or snow level.
Less than 3 ft. from a air intake that is within 10 ft
Less than 1 ft. from soffit of the roof
Less than 3 ft. from any building corner or L shape structure
NFPA 31
(OIL INSTALLATIONS USA)
Venting
32 GT 210 A 21/08/06 - 94863106 - 82274096E

33
21/08/06 - 94863106 - 82274096E GT 210 A
Electrical connections
See the specific instructions supplied with the control panel of the
boiler.
Maintenance
1 Boiler
Draining
Weadviseyouagainstdraining theinstallation,unlessitisabsolutely
necessary. Check the water level in the installation regularly and top
up if required, making sure you do not suddenly add cold water into
a hot boiler.
Cleaning
Please note that an efficient boiler is a boiler with clean
exchange surfaces.
The boiler should be cleaned as and when required, at least once a
year, depending upon applicable regulations and specific needs.
The operation should not be required more than a few times each
season and should not involve large quantities of water. Otherwise,
look for the leak and repair it immediately.
The operations described below shall only be performed
with the boiler and power supply off.
To have access to the exchange surfaces:
• take off the front of the casing,
•openthedoorby unscrewingthetwoflangednuts(17 mm wrench).
•removetheconvectionacceleratorsinthefluesoftheboilerwiththe
supplied removal hook
• carefully sweep the flues with the brush supplied for that purpose
• brush out the furnace as well
• vacuum the soot from beneath the flues and in the furnace with a
sweeping brush or a vacuum cleaner with a tube diameter less than
11/2
• put back the convection accelerators
• close the door and put back the front panel.
Refer to the instructions supplied with the burner for burner
maintenance.
1
2
3
Warning
Label all wires prior to disconnecting when servicing
controls. Wiring errors can cause improper and dangerous
operation. Verify proper operation after servicing.

34 GT 210 A 21/08/06 -94863106 - 82274096E
2 Domestic hot water (GT 2100)
See the instructions supplied with the MLS 150 or 250 tank.
3 Precautions required in the case of long boiler stops (one or more years)
The boiler and the chimney must be swept carefully. Close the door
of the boiler to prevent air from circulating inside the boiler.
We also recommend removing the pipe connecting the boiler to the
chimney and plugging the flue gas nozzle.
4 Precautions required if the heating is stopped when there is a risk of freezing
We recommend the use of a correctly dosed antifreeze agent to
prevent to the heating circuit from freezing.
If this cannot be done, drain the system completely.
Drain the hot water tank and piping as well.
5 Boiler Rating & Approval Label
The identification plate fixed on the side of the boiler during
installation is used to identify the boiler correctly. It also provides the
main specifications of the boiler.
The serial number breakdown
7N141C822
The fuel main shutoff valve should be turned off if the
burner is shutdown for an extended period of time.
Example X XXXX XXXX XX XX XXXXXX
First digit = Approved packed boiler = A or Unapproved packaged boiler = U
4 digits = boiler series
4 digits = boiler model and control
2 digits = fuel type 03 = All
2 digits = year of manufacture
last 6 digits = production

35
21/08/06 - 94863106 - 82274096E GT 210 A
Spare parts - GT 210 A
PR82274096E
When ordering spare parts, do not forget to state the code number given opposite the description of the required part in the liste.
BOILER BODY
10
9
11
24
23
25
31
6
1
4
2
4
3
17
7
5
19
17
18
26
27 27
20
21
22
29
30
11
14
13
15
16
12
11
4x 1x 4x
2x
2x
2x
2x
2x
7
26
27
27
28
32
8
8
8227N154

36 GT 210 A 21/08/06 -94863106 - 82274096E
CASING + INSULATION
44
43
40
41
47
46
48
40
41
45
39
49
38
8227N062A
2X
18X
3X
4X
4X
2X
2X
18X
2X
4X
2X
1X
5m

38 GT 210 A 21/08/06 -94863106 - 82274096E
Ref. Code no. DESCRIPTION
BOILER BODY
18227-0033 Rear section, GT 210
28227-0031 Intermediate section, GT 210
38227-0032 Front section, GT 210
49508-6036 8 ø silicone seal
59754-9101 Flow pipe 4, 5 sections
59754-9151 Flow pipe 6 to 8 sections
68227-5506 M 8-440 assembly rod, 4 sections
68227-5507 M 8-580 assembly rod, 5 sections
68227-5508 M 8-700 assembly rod, 6 sections
68227-5509 M 8-820 assembly rod, 7 sections
68227-5510 M 8-1000 assembly rod, 8 sections
78336-0507 Painted nipple
89754-9150 1"1/4 outlet/return tube, 4 or 5 sections
89754-9149 1"1/2 outlet/return tube, 6-7 sections
8300001330 1"1/2 outlet/return tube, 8 sections
98227-8503 150 ø painted nozzle, 4 or 5 sections
98227-8504 180 ø painted nozzle, 4 or 5 sections
10 8227-5511 Sweeping trap + seal
11 9508-6032 10 ø silicone fibreglass seal
12 8227-8531 Complete burner door, 4 or 5 sections
12 8227-8532 Burner door, 6-8 sections
13 8227-5504 Complete burner door insulation, 4 or 5 sections
13 8227-5505 Complete burner door insulation, 6 or 8 sections
14 8015-7700 Sight glass + seals
15 9757-0027 Sight glass flange
16 9495-0050 1/4" no. 290 plug
17 8227-0201 Adjustable painted hinge
18 9495-0249 1 1/2" plug NR 290
19 9494-8312 1 1/2" plug with 1/2" tapping
20 8500-0027 Thimble tube
21 9758-1286 Thimble tube spring
22 9754-9152 Draining tube
23 8227-0011 1412/16 long central baffle
23 8227-0017 1113/16 long central baffle
24 8227-0012 Left-hand baffle
24 8227-0020 Left-hand baffle, 7 or 8 sections
25 8227-0018 1412/16 long right-hand baffle
25 8227-0019 1113/16 long right-hand baffle
26 8227-0202 GT 210 painted height converter
27 9786-0646 Adjustable foot
28 9430-5027 Coating material for nipple (300 g)
29 9696-0225 305/16 long brush
29 9696-0226 471/4 long brush
30 8227-8502 Bag of fasteners for body
31 9602-0671 Hook for baffles
32 9434-5102 Retouching spray paint - anthracite grey
32 9434-5104 Retouching spray paint - ivory
INSULATING MATERIAL
38 8227-5512 Complete body insulation, 4 sections
38 8227-5513 Complete body insulation, 5 sections
38 8227-5514 Complete body insulation, 6 sections
38 8227-5515 Complete body insulation, 7 sections
38 8227-5516 Complete body insulation, 8 sections
BOILER CASING
39 8227-8514 Complete casing, 4 sections
39 8227-8515 Complete casing, 5 sections
39 8227-8516 Complete casing, 6 sections
39 8227-8517 Complete casing, 7 sections
39 8227-8518 Complete casing, 8 sections
40 8227-8524 Complete side panel, 4 sections
40 8227-8525 Complete side panel, 5 sections
40 8227-8526 Complete side panel, 6 sections
40 8227-8527 Complete side panel, 7 sections
40 8227-8528 Complete side panel, 8 sections
41 8227-8005 Lower side piece, 4 sections
41 8227-8014 Lower side piece, 5 sections
41 8227-8015 Lower side piece, 6 sections
41 8227-8016 Lower side piece, 7 sections
41 8227-8017 Lower side piece, 8 sections
43 8227-8543 Completerear upper crossbar
44 8199-8830 Complete cover, 4 sections
44 8199-8831 Complete cover, 5 sections
44 8199-8841 Complete cover, 6 sections
44 8227-8529 Complete cover, 7 sections
44 8227-8530 Complete cover, 8 sections
45 8227-8558 Single-piece rear panel
46 8227-0504 Painted furnace door panel
47 8227-8512 Complete GT 210 front panel
48 8227-8544 Painted lower front panel
49 8227-8513 Bag of fasteners for casing
CONTROL PANEL (DR 90)
60 8199-8777 Complete control panel
61 8227-8580 Complete component support
62 9750-9009 Electromechanical front plate
63 9532-5027 Two-pole green On/Off switch
64 8500-0034 STB Test switch
65 9532-5103 Reversing switch
66 9654-7019 10 A fuse
Ref. Code no. DESCRIPTION