Industrial 51 Aikins Street
Commercial Winnipeg, MB
Equipment Canada, R2W 4E3
Manufacturing LTD.
MTI
INSTALLATION, OPERATION AND MAINTAINANCE MANUAL
ATEENTION: Read this manual, unit submittal sheets and all labels attached to the unit carefully before
attempting to install, operate or service these units! Check unit data plates for type of gas, model number and serial
numbers. Retain this document for future reference.
FOR YOU SAFTEY IF YOU
SMELL GAS FOLLOW THESE
INSTRUCTIONS,
1) OPEN WINDOWS
2) DO NOT TOUCH
ELECTRICAL
SWITCHES
3) EXTINGUISH ANY OPEN
FLAMES
4) CALL THE GAS
SUPPLIER
IMMEDIATLY
Model:______________________ Serial Number:___________________
Job:________________________ Date of Installation:____________
IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR
MAINTAINACE CAN CAUSE PROPERTY DAMAGE OR DEATH. PLEASE READ THIS
INSTALLATION, OPERATION AND MAINTAINANCE MANUAL THOUROUGHLY
BEFORE INSTALLING OR SERVICING THIS EQUIPMENT
Installer please note: This equipment has been test fired and inspected. It has been shipped free from defects from our
factory. However, during shipment and installation, problems such as loose wires, leaks or loose fasteners may occur.
It is the installer’s responsibility to inspect and correct any problems that may be found.
INSTALLER/SERVICE CONTRACTOR
NAME:____________________________
ADDRESS:_________________________
TELEPHONE:_______________________
CONTACT:_________________________
FOR YOUR SAFETY THE USE
OF GASOLINE OR OTHER
FLAMMABLE VAPORS AND
LIQUIDS IN OPEN
CONTAINERS IN THE
VICINITY OF THIS
APPLIANCE IS HAZARDOUS
WARNING
INSTALLERS RESPONSIBILITY
2
Table of Contents
Receiving and Warehousing 3
General Handling instructions 3
General Installation Notes 3
Clearance to Combustibles 4
Connecting the Flue 5
Outdoor Installation 5
Indoor Installation 5
Separate Combustion system 7
Electrical Connections 8
Gas Piping 9
Gas Vent 9
Duct Furnaces 9
Cooling 9
High Altitude 10
Indoor Units 10
General Operating Instructions 10
Start Up Procedures 10
Precautions 10
Gas Units 11
Start Up 11
Shut Down 11
Emergency Shut Down 11
Service Shut Down 11
Recommended Quarterly Maintenance 12
Recommended Yearly Maintenance 12
3
RECEIVING AND WAREHOUSING
Inspect the unit upon arrival for any s hipping damage. If any part is missing or damaged, mark the
bill of lading as to damage and notify the carrier and factory at once.
If the unit cannot be installed immediately, store the unit in a clean and dry place.
GENERAL HANDLING INSTRUCTIONS
A qualified and experienced crane operator must do all rigging. General rigging methods should be
followed in all cases:
a) Spreader bars must be used when lifting equipment.
b) Equipment must be lifted simultaneously by all “eye” bolts or channel slots provided on
each section at the same time to distribute the loading properly. Damage or injury may
result if all provisions for lifting are not utilized at time of lift. When multiple lifting eyes
are furnished they are to share the weight of the lift evenly via spreader bar(s).
c) Lifting eyes and channel slots are designed to be lifted vertically. The MAXIMUM angle
from a vertical lift, which is permitted, is 30 degrees. Single sections only are to be lifted at
one time and stacked from the lowest section upward. Sections are designed to be selfsupporting in compression only. Do not attempt to hang multiple sections from any
structure. The total perimeter base and all frame structure must be supported, and levelled,
on high-density concrete or sufficient I-beam steel.
d) For some models the heating and blower sections may be shipped separately. Assemble the
sections by aligning the base frames and/or the pre-drilled flanges and secure the assembly
with the fasteners provided. Use gasketing material to prevent infiltration at the joints.
WARNING
FAILURE TO COMPLY WITH THE GENERAL REQUIREMENTS MAY RESULT IN
EXTENSIVE PROPERTY DAMAGE, SEVERE PERSONAL INJURY OR DEATH.
GENERAL INSTALLATION NOTES
a) In Canada the installation must conform with local building codes or, in the absence of
local building codes, with the current CAN/CGA -BI49.1 or B149.2 “Installation Codes
for Gas Burning Appliances and Equipment”. Indoor duct furnaces have been designed
for, and certified to comply with, CAN/CGA2.8.
b) Installation must be made in accordance with local codes or in absence of local codes
with ANSI Standard Z223.1-1992 (N.F.P.A. No.54) “National Fuel Gas Code” or the
latest edition of all ANSI and NFPA standards. Standards referred to in these installation
instructions are in effect at the time of certification. ANSI Standards are available from
the American Gas Association 1515 Wilson Boulevard, Arlington, Virginia 22209. NFPA
standards are available from the National Fire Protection Association, Battery March Par,
Quincy, Massachusetts 02269. Heaters referred to in this manual are designed for use in
airplane hangers when installed in accordance with ANSI/NFPA No.409 and in public
garages when installed in accordance with the NFPA No. 88a and NFPA No.88b.
4
c) No alterations are to be made on this equipment.
d) For suspended appliances that are installed in aircraft hangers, parking structures, and
repair garages must be installed in accordance with the standard on aircraft hangers,
ANSI/NFPA 409, the standard for parking structures. ANSI/NFPA 88a, the standard for
repair garages, ANSI/NFPA 88b, and with the CAN I-B149 codes,
CLEARANCE TO COMBUSTIBLE MATERIALS in inches (mm)
TOP FRONT BACK FLOOR SIDES ACCESS SIDE
6(152) 6(152) 6(152) 3(76) 6(152) 18(457)
All units installed on the floor have a minimum clearance of 3" (76mm) provided by the base frame
of each individual unit.
For service it is advisable to maintain a minimum 24' clearance on the side opposite the controls
side. If this unit is to be operated within a confined space or within a building of unusually tight
construction, air for combustion and ventilation must be obtained from outdoors or other spaces
freely communicating with the outdoors. Refer to current United States and Canadian Fuel Codes.
Ducts connected to the fur nace shall have removable access panels on both the upstream and
downstream sides of the furnace. These openings shall be accessible when the furnace is installed
and shall be sized to allow for the observation of smoke or reflected light inside the casing to
indicate the presence of leaks in the heat exchanger. The covers for the openings shall be attached
in such manner as to prevent leaks.
WARNINGS
Ø The furnace must not be operated in the presence of hazardous atmospheres
containing flammable vapours or combustible dust, chlorinated vapours or
halogenated hydrocarbons, or in applications with airborne substances
containing silicone. When such vapours mix with products of combustion,
highly corrosive compounds result, which will result in the premature failure
of the heat exchanger and other components. In such an event the warranty is
void.
Ø The duct furnace is not certified or suitable for use in drying process
applications. Use in such application voids any warranty and as the
manufacturer disclaims any responsibility for the duct furnace and/or
application.
Ø The use and storage of gasoline or other flammable liquids in the vicinity of
the appliance is hazardous.
5
CONNECTING THE FLUE (VENTING)
OUTDOORS INSTALLATIONS
AIR FOR COMBUSTION
Openings for combustion air must be provided in a panel (door) with direct access to the
vestibule area where the burners and draft inducer are located. This air opening must be of
sufficient size to provide a suitable supply of air for combustion to the burner compa rtment,
but not less than one (1) square inch free area per every 8000 Btu per hour of the specified
maximum input rate. The minimum dimension of any air opening should not be less than 3
inches. Heating appliance must be installed so that air access to inlet opening is
unobstructed.
VENTING
The vent termination must be located in accordance with the National Fuel Codes (ANSI
Z223.1) in the US or CAN/CGA-B149 Installation code in Canada.
The venting system for outdoor units is a Category 111, with vent products at positive
pressure and up to 500 °F. The cross-section area of the vent duct or pipe must be at least
equal to the discharge area of the draft inducer.
The discharge opening must always be located in the same pressure zone as the combustion
air inlet.
o For horizontal discharge, the outlet should be located on the same side of the
unit as the combustion air inlet. Never locate the vent outlet on the opposite
side from the combustion air inlet opening.
o For Horizontal discharge where the flue gases need to be vented vertically,
the preferred flue gas discharge should terminate in an exterior flue riser that
extends at least to the top of the cabinet and is open at the top and bottom.
This riser must be located on the same side of the appliance as the
combustion air opening.
INDOOR INSTALLATIONS
AIR FOR COMBUSTION
The furnace must be installed in a location with adequate clearances to provide for an
adequate combustion air space, service and inspection, and proper clearance for
combustible construction. The furnace shall be located in such a manor that it does not
interfere with the circulation of air in the heated space.
All fuel burning equipment must be supplied with air that enters into the combustion
process and is then vented outdoors. Sufficient air must enter the appliance location to
replace the air exhausted through the vent system. Do not install appliances in a confined
space without providing wall opening to and from this space, if building construction is
such that the normal infiltration does not provide sufficient air for combustion and venting,
outside air must be introduced in accordance with ANSI Z223.1 (Sect. 1.3.4.2 and 1.3.4.3).
Install air openings that provide that provides a total free area in accordance with the
following:
6
1. Air from inside the building – Opening of 1 square inch (sq. n.) per 1000
Btuh of input, but never less than 100 sq. in.
2. Air from outside (ducted) – Opening of 1 sq. in. per 2000 Btuh
3. Air from outside (direct opening) – Opening of 1 sq. in. per 4000 Btuh
VENTING
All duct furnaces must be vented outside of the heated space. All venting installations shall
be in accordance with the latest editions of ANSI Z223.1 The National Fuel Gas Codes, part
7, Venting of Equipment, or applicable provisions of local codes and ordinances.
The duct furnace must be connected to a factory built chimney or vent complying with a
recognized standard or a masonry or concrete chimney lined with a lining material
acceptable to the authority having jurisdiction.
The duct furnace will be classified in accordance with ANSI standards as follows:
o Category 1 – Non- condensing appliance with negative vent pressure
o Category 111 – Non-condensing appliance with positive vent pressure
VERTICALLY VENTED FURNACE – Category 1 (see figure 1 in appendix C)
1. Use single wall or double wall (type B) vent pipe of diameters listed in the following
table for the appropriate models:
2. Maximize the height of the vertical run of vent pipe. A minimum of five (5) feet
(1.5m) of vertical p ipe is required. The top of the vent must extend at least two (2)
feet (0.61m) above highest point on the roof. (Use Listed Type B vent for external
runs). A weatherproof vent cap must be installed to the vent termination.
3. Horizontal runs must not exc eed 75% of the vertical height of the vent pipe, up to a
maximum of ten (10) feet (3m). Horizontal runs should be pitched upward ¼” per
foot (21 mm) and should be supported at 3 foot (1m) maximum intervals.
4. Design vent pipe to minimize the use of elbows. Each 90 is equivalent to 5 feet
(1.5m) of straight vent pipe run.
5. Vent pipe should not be run through unheated spaces. If such runs cannot be
avoided, insulate vent pipe to prevent condensation inside vent pipe. Insulation
should be a minimum of ½” (12.7mm) thick foil faced fibreglass, minimum 1 ½#
density.
6. Dampers must not be used in vent piping runs. Spillage of flue gases into the
occupied space could result.
7. Vent connectors serving Category 1 heaters must be connected into any portions of a
mechanical draft system operating under positive pressure.
HORIZONTALLY VENTED FURNACES – Category 111(see figure 2 in appendix C)
Pressures in Category 111 venting systems are positive and therefore care must be taken to
avoid flue products form entering the heated space. Use only vent material and components
that are UL listed and approved for Category 111 venting systems.
WARNING: Do not use Type B vent within a building on horizontally vented units.
7
All vent pipe joints must be sealed to prevent leakage into the heated space. Follow
instructions provided with approved venting material used. The proper vent pipe diameter
must be used, to insure proper venting of combustion products, as follows:
§ Input rating of 200 000 Btuh to 400 000 Btuh – 6” diameter
(152 mm)
§ Input rating of 75 000 Btuh to 199 999 Btuh – 5” diameter
(152 mm)
The total equivalent length of vent pipe must not exceed 50 ft (15.25m). Equivalent length
is the total length of straight sections, plus 5 ft (1.52m) for each 90 elbow a nd 2.5 ft (0.76m)
for each 45 elbow.
The vent system must also be installed to prevent collection of condensate. Pitch horizontal
pipe runs downward ¼ in. per foot (21 mm per meter) toward the outlet to permit
condensate drainage. Insulate vent pipe e xposed to cold air or routed through unheated
areas. Insulate pipe runs longer than 10 ft (3m). Insulation should be a minimum of ½ in
thick foil face fibreglass, 1 ½ lb density. Maintain 6 in (152 mm) clearance between vent
pipe and combustible materia ls.
An approved Breident Type L, Field Starkap or equivalent vent cap must be provided. Vent
cap diameter must be the same as the required vent pipe diameter. The vent terminal must
be at least 12 in (305mm) from the exterior wall that it passes through to prevent
degradation of building material by flue gases. The vent terminal must be located at least
1ft (305mm) above grade, or in snow areas, at least 3ft (1m) above snow line to prevent
blockage. Additionally, the vent terminals must be installed with a minimum horizontal
clearance of 4 ft (1.2m) from electrical meters, gas meters, regulators or relief equipment.
Through the wall, vents shall not terminate over public walkways, or over an area where
condensate or vapour could create a nuisance or hazard. Provide vent termination
clearances to building or structure features as follows:
Structure Minimum clearance
Door, Window or gravity inlet 4 ft below
4 ft horizontally
1 ft above
Forced air inlet within 10 ft 3 ft above
Adjoining building or parapet 6 ft
Adjacent public walkway 7 ft above grade
EACH APPLIANCE MUST HAVE IT’S OWN INDIVIDUAL VENT PIPE AND
TERMINAL. Do not connect vent system from
horizontally vented units to other vent systems or chimney.
SEPARATE COMBUSTION SYSTEMS
MTI duct furnace modules may be applied to appliances for operation in separated
combustion systems. The module must be mounted with the burner section in a reasonably
airtight vestibule compartment, as these systems provide combustion air from outside the
8
heated space and vent products of combustion outdoors. No air openings are to be provided
in the vestibule access door or panel and sealing grommets or gaskets should be provided
for gas and electrical entry points into the vestibule to provide a reasonably airtight seal.
1. A suitable airtight gasket on the vestibule door or access door.
2. An observation window in the door to permit observation of ignition and main
burner flame during operation and servicing.
3. A door or panel interlock switch to insure that door or panel is closed or in place
during operation.
4. Openings in the vestibule space for attachments of inlet air supply pipe and vent
pipe, sized for the Btuh input rating.
5. Approved vent terminal on both the supply air inlet and flue gas exhaust. NOTE:
The inlet and outlet terminals must be located in the same pressure zone to
provide safe appliance operation.
Proper installation of a ir inlet, and flue gas exhaust piping are essential to the proper
operation of the furnace. (See Figure 3 and Figure 4 in appendix C)
ELECTRICAL CONNECTIONS
a) This unit has been examined and tested for compliance with CSA C22.2 no.0, CSA C22.2
no.3 and the NEC code.
b) All electrical work must conform to the requirements of the current NEC and CSA
standard C22.1, Canadian Electric Code part I, and local ordinances.
c) Control voltage is as indicted on the rating plate.
d) Follow the wiring diagram supplied with the unit.
e) If a space thermostat is used with the furnace, locate the thermostat so the cold drafts and
hot discharge air streams do not affect the performance of the unit. Do no mount the
thermostat on the casing of the unit, as it will be affected by radiated and conducted heat.
Refer to the instruction furnished with the thermostat for further details.
f) If any of the original wires as supplied with the unit must be replaced, it must be replaced
with type TEW 105 degrees or its equivalent except where noted.
g) Temperature controllers, limit controllers, remote selector switches, door switches or any
other auxiliary electrical items must be connected to the terminals provided as shown on
the wiring diagram.
h) For units shipped in multiple sections, electr ical connections between sections are to be
made by the installer in the field.
i) Field wiring to be done by the installer is denoted by doted lines on the wiring diagram.
Solid lines on the wiring diagram indicate factory wiring by the manufacturer.
j) The unit must be electrically grounded in accordance with local codes, or in the absence of
local codes, with the National Electrical Code, ANSI/NFPA 70, and/or the CSA.C22.1
Canadian Electrical code.
NOTE: Due to the nature of transport, check all bolts and fasteners for tightness.
9
GAS PIPING
All gas piping should be in accordance with National Fuel Gas Code ANSI Z223.1, and CAN
1-B149 with the regulation of local authorities having jurisdiction. An emergency manual shut
down valve shall be provided upstream of the piping to unit and should be labelled for quick
identification. Colour coding of gas piping is also recommended.
In addition:
a) Carefully check the unit rating plate for fuel type and supply pressure.
b) If required, locate the high-pressure regulator at least five feet from the unit.
c) Gas lines must not be located in such a way as to hinder access to the unit.
d) A minimum 1/8" NPT plugged tapping, accessible for test gauge connection, must be
installed immediately upstream of the gas supply connection to the appliance.
GAS VENT
High gas pressure regulator (if required), low pressure regulator, pilot pressure regulator, gas
pressure switch (if supplied), and normally open vent valve (if supplied) must be vented outside
of building for an indoor unit (check with authorities having jurisdiction).
DUCT FURNACES
a) A duct furnace shall be installed with an inlet duct, which will provide air distribution
equivalent to a straight run of duct having the same cross-section area as the inlet
connection and not less than two equivalent diameters in length.
b) The ducts connected to the duct furnace must have removable access panels on both
upstream and downstream sides of the duct. The opening must be accessible, and shall be
of such size, that smoke or reflec ted light may be observed inside the casing to indicate the
presence of leaks in the heating element. The cover for the opening shall be attached in
such a manner as to prevent leaks.
c) The installation of the duct furnace must be adjusted to obtain an air throughout within the
range specified on the appliance rating plate.
d) If a duct furnace is connected to a return air duct or any other inlet air restoration; the duct
furnace shall be installed on the positive pressure side of the air-circulating blower.
COOLING
When installed downstream from a refrigeration system, condensation will form and provisions
shall be made to dispose of condensate.
10
HIGH ALTITUDE
Inputs are derated 4% for each 1000 ft (305m) elevation above 2000 ft (610m).
INDOOR UNITS
Install an indoor unit such that the gas ignition control system is not directly exposed to water
spray, rain or dripping water.
GENERAL OPERATING INSTRUCTION
a) Refer to the rating plate for fuel input and supply pressures.
b) Do not attempt to start the burner if the unit is full of vapour gas, or if the combustion
chamber is very hot.
c) Do not leave combustible material near the unit.
d) Shut off the manual fuel supply valve if the burner has been shut down for an extended
period of time.
e) Ensure access doors are in place before starting the burner.
f) Do not start the burner unless the blower access doors are securely in place.
g) Refer to literature regarding controls, gas valves and other components.
START-UP PROCEDURES
PRECAUTIONS
a) Ensure the main disco nnect switch is in the “off” position.
b) Ensure the burner on-off switch is in the “off” position.
c) Check all electrical and gas connections and tighten if necessary
d) Check main fans (by rotating fan shaft by hand), bearing setscrews, and pulley set
screws. Ensure blowers are free to turn, vibration isolation shipping blocks are removed
(if equipped), shipped loose items (if supplied), are removed from inside blower
sections.
e) Lubricate (if necessary) the burner and main fan motors. The specification on the
motors for grease and oil shall be adhered to.
f) Check heater outlets for obstruction.
g) Check all fuse blocks to determine that all fusing is installed.
h) Set the operating controls (e.g. thermostat, remote panel switches) so as to allow
heating operation of the unit.
i) Reset the motor starter by pushing the reset button, if so equipped. Ensure all blowers
are rotating in the correct rotation.
j) Check building system gas supplies and be sure all lines are purged of air.
k) Check building system gas supply pressur e.
11
CAUTION-GAS UNITS
• At maximum input the supply gas pressure must fall within the range specified on the unit
rating plate.
• Check all piping for tightness and correct any signs of leaks.
START-UP
a) Refer to start-up checklist and field report for correct settings that are to be checked on the
unit.
b) Check the supply fan motor thermal overload setting against the rating plate figure.
c) Ensure burner on-off switch is in the “off”
d) Verify unit’s sequence of operation corresponds to sequence provided in the supplied
literature.
e) Check supply fan motor amps against rating plate figure. If actual figure varies by +/-20%
from rating plate value, take corrective actions with respect to ductwork and accessories
external to the unit or blower/motor drive adjustments making sure to follow manufactures
rating for blower rotational speeds.
f) The thermal overloads must be set to appropriate motor performance after all adjustments
have been made.
g) Follow sequence and perform necessary steps to initiate burner activation.
h) Once flame is detected the controller goes into "Power" and “Heat” mode.
i) Check unit performance as described on the factory test report, (include items such as stack
temperature. CO-2 level, flame signals etc.) Readings obtained in the field should not
deviate significantly from those obtained at the factory.
SHUT DOWN
1. EMERGENCY SHUT DOWN
a) Set disconnect switch to "off' position.
b) Close the manual main fuel valve.
c) Set the burner on-off switch to "off'.
2. SERVICE SHUT DOWN
a) Set the burner toggle switch to "off' position.
b) Close the manual main fuel valve.
c) Set the operating controls, (e.g. thermostat, remote panel switches), so as to prevent heating
operation.
MAINTENANCE
Regular maintenance is necessary to ensure the efficient operation and long life of this unit. This
maintenance should be preformed by, or supervised by, qualified service personnel. A maintenance
schedule should be prepared for the unit based on its application and location.
12
1. RECOMMENDED OUARTERLY MAINTENANCE
a) Check for loose connections in the wiring.
b) Check the voltage at the unit while it is in operation.
c) Check motor amperage draws against rating plate values.
d) Inspect all contractors to ensure that they are clean and making good contact.
e) Check all fittings, valves and lines for leaks.
f) Check for proper combustion. Adjust if necessary.
g) Check the flame sensor signal (1.5-6.0 mA), clean if necessary.
h) Check the fuel supply pressure to the unit.
i) On gas fired units check the manifold pressure.
j) Clean or replace air filters if necessary. Replace filters only with type equivalent to those
supplied with the unit by the factory.
k) Check all dampers, linkages and damper actuators; adjust and tighten as required.
l) Check all belts. Adjust or replace as necessary.
m) Check all bearings and lubricate if necessary.
n) Check operation of all safety controls.
o) Oil burner fan.
p) Check all bearing to ensure tightness on shaft and lubricate if necessary.
q) Check ignition spark and adjust gap if necessary.
2. RECOMMENDED YEARLY MAINIENANCE
a) Perform the monthly quarterly maintenance recommended.
b) Inspect blower wheels and housing, clean if necessary.
c) Inspect all set screws on blower wheels and pulleys to ensure that they are secured to their
respective shafts
d) Check flame supervisor controller.
e) Inspect all operating and safety controls. Clean and replace if necessary.
f) Inspect and clean the collection and disposal systems to ensure proper drainage.
NOTE: If ignition controller is replaced ensure the control system is not exposed to water
spray, rain or dripping water. Refer to individual manufacturer’s literature provided for
maintenance requirements of optional equipment.
13
MARKINGS
FOR YOUR SAFETY
If you smell gas:
1. Open Windows.
2. Don't touch electrical switches.
3. Extinguish any open flame.
4. Immediately call your gas supplier.
WARNING:
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death. Read the instructions
thoroughly be fore installing or servicing
this equipment.
FOR YOUR SAFETY POUR VOTRE SECURITE
If you smell gas: Si vous sentez une odeur de gaz:
1. Open Windows. 1. Ouvrez les fenetres.
2. Don't touch electrical switches. 2. Ne touchez a aucun interrupteur.
3. Extinguish any open flame. 3. Eteignez toute flamme nue.
4. Immediately call your gas supplier. 4. Avertissez immediatement votre
fournisseur de gaz.
WARNING: AVERTISSEMENT:
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, injury or
death. Read the instructions thoroughly befo re
installing or servicing this equipment.
Une installation, un reglage, une modification, une
reparation ou un entretien incorrect peut entrainer des
dommages materiels, des blessures ou la mort. Lisez
attentivement et d'entretien avant de proceder a
l'installation ou a l'entretien de cet equipment.
14
FOR YOUR SAFETY
The use and storage of gasoline or other
flammable vapors and liquids in open
containers in the vicinity of this appliance is
hazardous.
Loading...