Reznor FT-200 Installation Manual
NOTICE:
The information contained on the following page(s) was produced
prior to May 1, 2014. On that date Reznor became part of
Nortek, Inc.
References to any other company afliations are no longer valid.
This manual refers to Reznor brand products that have been
discontinued for more than 10 years.
Some replacement parts may no longer be available from
our suppliers. Compatible parts may be substituted.
Please contact your Reznor Representative
with specic questions.
©2014 Reznor, LLC. All Rights Reserved.
Trademark notice: Reznor is registered in at least the United States.
0514 PDF Form Cover2
Model FT
Gas-Fired, Power-Vented
Unit Heaters
®
APPLIES TO: Installation/Operation/Service
INST ALLATION FORM RZ-NA-I-FT
Obsoletes Form RGM 433 (V ersion G)
Models FT 30, 45, and 60 are certified for residential and commercial/industrial installations.
Models FT 75-300 are certified for commercial/industrial installations.
Table of Contents
Installation and Operation ........................................................... Paragraphs 1-20 ........... Pages 1-13
Check Installation and Start-Up.......................................................Paragraph 21 ......... Pages 14-15
Service/Maintenance/Troubleshooting ...................................... Paragraphs 22-33 ......... Pages 16-20
Index Page No.
Burner Air Restrictor ........................... 13
Burner Orifices ................................... 17
Burner Removal .................................. 16
Burners ................................................ 13
Check Installation and Start-Up .......... 14
Circuit Board ....................................... 11
Circuit Board LED Codes ............. 11, 19
Clearances .............................................. 3
Combustion Air ..................................... 3
Combustion Air Proving Switch ......... 13
Condensation ......................................... 8
Confined Space ..................................... 3
Dimensions ........................................... 5
Downturn Nozzles (Option Kit) ............. 2
Electrical Supply and Connections ..... 11
Index Page No.
Fan ...................................................... 17
Fan Motor ........................................... 11
Flame Rollout Switch .......................... 18
Gas Piping and Pressures ...................... 9
Gas Valve ............................................ 13
General .................................................. 1
Hazard Intensity Levels......................... 1
Heat Exchanger ................................... 17
High Altitude Combustion Air
Pressure Switches .................... 2, 11
High Altitude Operation ........................ 2
Ignition System ............................. 13, 17
Installation Codes ................................. 2
Left Side Controls .................................. 4
REFERENCE: Replacement Parts, Form RZ-NA-P-FT/SFT
Gas Conversion Form, RZ-NA-I-FT/SFT -GC
Index Page No.
Limit Control ............................... 18
Location (Heater) ........................... 3
Louvers, Vertical (Option Kit) ....... 2
Maintenance ................................. 16
Service ......................................... 16
Suspending..................................... 4
Thermostat ................................... 11
Troubleshooting ........................... 19
Uncrating and Preparation ............. 2
Vent System ................................. 18
Venter Motor ................................ 17
Venting ........................................... 6
Warranty ......................................... 2
Wiring Diagrams .......................... 12
FOR YOUR SAFETY
What to do if you smell gas:
• Do not try to light any appliance.
• Do not touch any electrical 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 your fire department.
WARNING: Improper installation,
adjustment, alteration, service, or
maintenance can cause property damage,
injury, or death. Read the installation,
operation, and maintenance instructions
thoroughly before installing or servicing
this equipment.
FOR YOUR SAFETY
Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
HAZARD INTENSITY LEVELS
1. DANGER: Failure to comply will result in severe personal injury or
death and/or property damage.
2. W ARNING: Failur e to comply could result in sever e personal injury or
death and/or property damage.
3. CAUTION: Failure to comply could result in minor personal injury
and/or property damage.
General
Installation should be done by a qualified agency in
accordance with the instructions in this manual and
in compliance with all codes and requirements of authorities having jurisdiction. The instructions in this
manual apply to the unit heater model shown below.
Model Type Fuel Vent Air Delivery
FT
IMPORTANT: If your heater Model No. has a suffix -LN or -CV, do not use the
venting instructions in this manual. Follow the instructions in Form RZ-433-CV/
LN to install a Model FT30-CV, FT45-CV, or FT45-LN heater.
Indoor, Suspended
Unit Heater
Gas-Fired Power Propeller Fan
Form RZ-NA-I-FT, Mfg No. 173473 Rev 8, Page 1
General (Cont'd)
Model FT heaters are design-certified by the Canadian Standards Association (CSA) to ANSI Z83.8a and CGA 2.6a for industrial/commercial installations in the United States and Canada. Models FT 30,
45 and 60 are approved by the Canadian Standards Association to IAS
10-96 for residential installations in both the United States and Canada.
All heaters are available for use with either natural or propane gas.
The type of gas, the firing rate, and the electrical characteristics are on
the unit rating plate.
WARNING: Gas-fired appliances are not
designed for use in hazardous atmospheres
containing flammable vapors or combustible
dust, in atmospheres containing chlorinated or
halogenated hydrocarbons, or in applications
with airborne silicone substances. See Hazard
Levels, Page 1.
W ARNING: Should overheating occur, or the gas
supply fail to shut off, shut off the manual gas
valve to the appliance before shutting off the
electrical supply.
W ARNING: Do not use this appliance if any part
has been under water. Immediately call a
qualified service technician to inspect the
appliance and replace any gas control which has
been under water.
2. Warranty
Refer to the limited warranty information on the Warranty Card in the
"Owner's Envelope".
Warranty is void if ...
a. Wiring is not in accordance with the diagram furnished with the
heater.
b. The unit is installed without proper clearance to combustible
materials.
c. The heater is connected to a duct system or if the air delivery
system is modified.
3. Uncrating and Preparation
This unit was test operated and inspected at the factory prior to crating
and was in operating condition. If the heater has incurred any damage
in shipment, document it with the transporting agency and contact your
Reznor distributor.
Check the rating plate for the gas specifications and electrical characteristics of the heater to be sure that they are compatible with the gas
and electric supplies at the installation site.
Read this booklet and become familiar with the installation requirements of your particular heater. If you do not have knowledge of local
requirements, check with the local gas company or any other local agencies who might have requirements concerning this installation.
Before beginning, make preparations for necessary supplies, tools, and
manpower. If the installation includes optional vertical louvers or a
downturn nozzle, install these options before the heater is suspended.
Follow the instructions included in the option package; option packages are shipped separately.
1. Installation Codes
These units must be installed in accordance with local building codes.
In the absence of local codes, in the United States, the unit must be
installed in accordance with the National Fuel Gas Code (latest edition). A Canadian installation must be in accordance with the CAN/
CGA B149.1 and B149.2 Installation Code for Gas Burning Appliances and Equipment. These codes are available from CSA Information Services, 1-800-463-6727. Local authorities having jurisdiction
should be consulted before installation is made to verify local codes
and installation procedure requirements.
Special Commercial Installations (Aircraft
Hangars/Repair Garages/Parking Garages)
Installations in aircraft hangars should be in accordance with ANSI/
NFPA No. 409 (latest edition), Standard for Aircraft Hangars; in public garages in accordance with ANSI/NFPA No. 88A (latest edition),
Standard for Parking Structures; and for repair garages in accordance
with ANSI/NFPA No. 88B (latest edition), Standard for Repair Garages. ANSI/NFPA-88 (latest edition) specifies overhead heaters must
be installed at least eight feet above the floor. In Canada, installations
in aircraft hangars should be in accordance with the requirements of
the enforcing authorities, and in public garages in accordance with
CAN/CGA B149 codes.
ANSI/NFPA 409 (latest edition) specifies a clearance of ten feet to the
bottom of the heater from the highest surface of the top of the wing or
engine enclosure of whatever aircraft would be the highest to be housed
in the hangar, and a minimum clearance of eight feet from the floor in
other sections of aircraft hangars, such as the offices, and shops which
communicate with areas used for servicing or storage. The heaters
must be located so as to be protected from damage by aircraft or other
objects such as cranes and movable scaffolding. In addition, the heaters must be located so as to be accessible for servicing, adjustment,
etc.
Form RZ-NA-I-FT, Page 2
4. High Altitude Operation
If the heater is being installed in an altitude above 2000 ft (610M),
check the rating plate to determine what must be done to prepare the
heater for high altitude operation.
NOTE: A heater equipped with a two-stage valve must be factory-built
for high altitude installation.
Check the rating plate, determine which circumstance below applies,
and follow the instructions.
• If the altitude range on the rating plate agrees with the altitude at
the site, no further action is required. Proceed with the installation.
• If the altitude range on the rating plate reads "Sea Level" and the
altitude at the site is between 2000 ft and 6000 ft (610M to 1830M)
and the heater has a single-stage gas valve, install the heater and
follow the instructions in Paragraph 12 to derate by manifold gas
pressure adjustment.
• If the altitude range on the rating plate reads "Sea Level" and the
altitude at the site is above 6000 ft (1830M) and the heater has a
single-stage gas valve, in addition to adjusting the manifold pres-
sure, it will be necessary to replace the combustion air pressure switch.
Order the appropriate switch from the list below and replace the
switch before suspending the heater.
After the heater is installed, follow the instructions in Paragraph 12
to derate by adjusting the manifold gas pressure.
High Altitude Combustion Air Pressur e Switches
FT P/N Description
30 164674 Blue Label, -.10", #PPS10027-2733
45-60 164675 Brown Label, -.17", #PPS10027-2734
75-200 149879 Orange Label, -.50", #PPS10027-2355
250-300 151372 White Label, -.74", #PPS10027-2406
Figure 1 - Pressure Switch Location (above 6000 ft,
,
replace with a pressure switch set for high altitude
operation)
Pressure Switch
5. Clearances and
Combustion Air
Units must be installed so that the clearances in the table are
provided for combustion air space, inspection and service, and
for proper spacing from combustible construction. Clearance to
combustibles is defined as the minimum distance from the heater
to a surface or object that is necessary to ensure that a surface
temperature of 90°F above the surrounding ambient temperature is not exceeded.
Re quir ed C learances - inche s and millimeters
Model Sizes
Top 1 25 61526152
Flue Connector 615261526152
Access Panel 18 457 24 610 24 610
Non-Access Side 1 25 61526152
Bottom* 125125125
Rear 18 457 18 457 24 610
*A Mo del FT 30 , 4 5, 60, 75 in st alled in a r esidential ga rage
must be installed a minimum clearance above the floor of 18
inches (457mm). Sizes 100-300 are not certified for residential
installation.
This fuel-burning heater must be supplied with the air that enters into the combustion process and is then vented to the outdoors. Sufficient air must enter the equipment location to replace that exhausted through the heater vent system. In the past,
the infiltration of outside air assumed in heat loss calculations
(one air change per hour) was assumed to be sufficient. However, current construction methods using more insulation, vapor
barriers, tighter fitting and gasketed doors and windows, weatherstripping, and/or mechanical exhaust fans may now require the
introduction of outside air through wall openings or ducts.
The requirements for combustion and ventilation air depend upon
whether the unit is located in a confined or unconfined space.
An "unconfined space" is defined as a space whose volume is
not less than 50 cubic feet per 1000 BTUH of the installed ap-
pliance. Under all conditions, enough air must be provided to
ensure there will not be a negative pressure condition within the
equipment room or space. For specific requirements for confined space installation, see Paragraph 6.
WARNING: These power-vented unit heaters
are designed to take combustion air from the
space in which the unit is installed and are not
designed for connection to outside combustion
air intake ducts. Connecting outside air ducts
voids the warranty and could cause hazardous
operation. See Hazard Levels, Page 1.
30, 45, 60, 75100, 125,
150
200
inches mm inches mm inches mm
250, 300
6. Combustion Air Requirements for
a Heater Located in a Confined
Space
Do not install a unit in a confined space without providing wall openings
leading to and from the space. Provide openings near the floor and ceiling for
ventilation and air for combustion as shown in Figure 2, depending on the
combustion air source as noted in Items 1, 2, and 3 below.
Add total BTUH of all appliances in the confined space and divide by figures
below for square inch free area size of each (top and bottom) opening.
Figure 2 - Confined
Space: A space
whose volume is less
than 50 cubic feet
per 1000 BTUH of
the installed
Confined
Space
appliance input
rating
1. Air fr om inside the building -- openings 1 square inch free area per 1000
BTUH. Never less than 100 square inches free area for each opening. See (1)
in Figure 2.
2. Air from outside through duct -- openings 1 square inch free area per
2000 BTUH. See (2) in Figure 2.
3. Air direct from outside -- openings 1 square inch free area per 4000 BTUH.
See (3) in Figure 2.
NOTE: For further details on supplying combustion air to a confined space,
see the National Fuel Gas Code ANSI Z223.1a (latest edition).
7. Unit Heater Location
Suspend the heater so that it is a minimum of five feet (1.5M) above the floor.
Other clearances are listed in Paragraph 5.
WARNING: If touched, the vent pipe and certain
internal heater surfaces that are accessible from
outside the heater will cause burns. Suspend the heater
a minimum of 5' (1.5M) above the floor.
For best results, the heater should be placed with certain rules in mind. In
general, a unit should be located from 8 to 12 feet (2.4-3.7M) above the floor.
Units should always be arranged to blow toward or along exposed wall surfaces, if possible. Where two or more units are installed in the same room, a
general scheme of air circulation should be maintained for best results.
Suspended heaters are most effective when located as close to the working
zone as possible, and this fact should be kept in mind when determining the
mounting heights to be used. However, care should be exercised to avoid
directing the discharged air directly on the room occupants.
Partitions, columns, counters, or other obstructions should be taken into consideration when locating the unit heater so that a minimum quantity of airflow
will be deflected by such obstacles.
When units are located in the center of the space to be heated, the air should
be discharged toward the exposed walls. In large areas, units should be located to discharge air along exposed walls with extra units provided to discharge air in toward the center of the area.
At those points where infiltration of cold air is excessive, such as at entrance
doors and shipping doors, it is desirable to locate the unit so that it will discharge directly toward the source of cold air from a distance of 15 to 20 feet
(4.6-6.1M).
CAUTION: Do not locate the heater where it may be
exposed to water spray, rain or dripping water.
Form RZ-NA-I-FT, Mfg No. 173473 Rev 8, Page 3
8. Left Side Controls
Suspension Angle, P/N 194931 - Attach by (1) removing ALL
screws across top edge of cabinet. (2) Position suspension angle,
aligning holes with same holes emptied in Step (1). (3) Using
ALL screws that were removed and the same
cabinet holes, attach suspension angle.
Suspension angle
attached to rear
of heater
All units are factory built with controls on the right side (as
viewed when facing the heater discharge). If the installation
location requires that the controls be on the left side, follow
the steps below to change the control side.
1. Turn the heater over (180o). Turn so that the sides are
opposite but the front and rear remain the same. (Notice
that the "bottom" panel, which is now on the top of the
heater, has four suspension holes.)
2. Reverse the Louver Position -- Remove the screws hold-
o
ing the louver frame. Turn the louver assembly (180
). Reinstall the assembly so that the louvers will direct the air
downward with the heater in its new position.
3. Sizes 60, 75, 100, 125, 150, 200, 250 and 300; Move the
Ignitor -- Remove the control access panel. On the side of
the burner rack, remove the screws holding the spark ignitor and the flame sensor. Interchange the locations of the
ignitor and the flame sensor so that the ignitor will be to-
ward the bottom of the burner rack. IMPORTANT: The
brown ground wire must stay with the spark ignitor.
4. Turn the access panel so that the labels are in an upright
position. Re-attach the panel (NOTE: Illustrations of the
control section, except for the location of the ignitor and
the flame sensor on Sizes 60-300, will appear to be upside
down.)
9. Suspending the Heater
Before suspending the heater, check the supporting structure
to be used to verify that it has sufficient load-carrying capacity to support the weight of the unit.
Net Weight
Size 30 45 60 75 100 125 150 200 250 300
lbs 60 66 84 90 140 145 205 215 258 280
kg 27 30 38 41 64 66 93 98 117 127
When the heater is lifted for suspension, support the bottom of the heater with
plywood or other appropriately placed material. If the bottom is not supported,
damage could occur.
Determine the type of suspension to be used:
• All Sizes - The heater is equipped with 4-pt suspension. Two 3/8"-16 nut
retainers are located on each side of the heater. See Dimensions in Paragraph
10 and illustration in Figure 3A.
• Sizes 30, 45, 60, and 75 may be installed with 2-pt suspension. Follow the
illustrated instructions in Figure 3B.
• Sizes 30, 45, 60, and 75 may be suspended with an optional ceiling sus-
pension kit. Refer to Figure 3C. Step-by-step instructions are included with
the option kit.
WARNING: Suspend any size of Model FT heater only
from the threaded nut retainers (Figur e 3A). Or, suspend
a Size 30, 45,60, or 75 as illustrated in Figure 3B or using
the Ceiling Suspension Kit in Figure 3C. Do not suspend
from the heater cabinet panels.
WARNING: Unit must be level for proper operation. Do not
place or add additional weight to the suspended heater . Hazard
Levels, page 1.
Be sure that the 3/8" threaded hanger
rods are locked to the heater as
illustrated. Recommended maximum
hanger rod length is 6 feet.
Figure 3A Four-point
suspension on
all sizes; attach
threaded rods
Add a 3/8 nut
to lock the hanger
rod to the heater
to all four nut
retainers
3/8 Threaded Rod
C
L
17-15/16
(456mm)
9-9/16
5/16 or 3/8 threaded rods
(243mm)
(maximum length above
the heater is 18/457mm )
On the bottom of the heater, use a washer
and double nuts to attach each threaded
rod. Use double nuts. Lock lower nut to
upper by holding upper nut while
tightening lower nut.
C
L
Sizes 30/45 --
21-1/4 (540mm)
Sizes 60/75 --
23-1/4 (591mm)
Figure 3B - Two-point suspension
applies to Models FT 30, 45, 60,
and 75
Sizes 30/45
12-1/8
(308mm)
Sizes 60/75
18-1/8
(591mm)
Figure 3C - Ceiling Suspension Kit, Option CK22,
for Models FT 30, 45, 60, or 75
When suspending, use a minimum of two anchor points per
angle.
NOTES: Quantity of screws used to attach the suspension angles
will vary by heater size and from front to rear of cabinet. If
optional vertical louvers are being added, install louvers after
suspension angles are attached.
Form RZ-NA-I-FT, Page 4
10. Dimensions
Model FT Dimensions (inches and mm)
Figure 4
A
Adjustable Louvers
E
Rear View
Sizes
F
30 - 125
G
H
Field Wiring K = 115V/60Hz/1Ph
Connections L = Thermostat Wires (24V)
4 dia Flue Outlet
K
L
1/2 NPT Gas Connection
Front View
All Sizes
NOTE: Composite drawings are not proportional for all sizes.
B
F
Gas Connection
Sizes 150-200, 1/2 NPT
Sizes 250-300, 3/4 NPT
Right Side View
All Sizes
Standard control side is
the right side; units may
be converted to left side
controls in the field (See
Paragraph 8.)
Removable Access Panel
C
D
E
Rear View
Sizes
150-300
L
G
K
H
of Motor
5 dia Flue Outlet, Sizes 150-250
6 dia Flue Outlet, Size 300
M
16 (406)
Top View
All Sizes
J
Airflow
(4) 3/8-16 Cage Nuts for
4-point unit suspension
NOTE: Sizes 30, 45, 60, and 75
may be suspended with two-
point suspension. See Figure 3B.
Dimensions (inche s)
Size 30 45 60,75 100,125 150,200 250,300
28-5/8 28-5/8 28-5/8 38 38 50-1/8
A
12-1/8 12-1/8 18-1/8 22-1/16 33-1/16 33-1/16
B
21-1/4 21-1/4 23-1/4 25-5/16 25-5/16 25-5/16
C
25-9/16 26-3/16 31-3/8 33-9/16 34 35-3/8
D
6-9/16 6-9/16 6-9/16 9-3/4 6-3/16 8-3/16
E
5-13/16 5-13/16 8-3/4 11-1/8 11-3/8 11-3/8
F
G
H
J
M
4 4 4-1/4 4-3/8 7-1/8 7-1/8
3-1/16 3-1/16 3-1/16 6-11/16 6-1/2 4-15/16
17-15/16 17-15/16 17-15/16 24-1/4 24-1/4 29-3/8
9/16 9/16 9/16 9/16 9/16 8-1/2
Dimensi ons (mm)
Size 30 45 60,75 100,125 150,200 250,300
A
B
C
D
G
H
M
727 727 727 965 965 1273
308 308 460 560 840 840
540 540 591 643 643 643
649 665 797 852 864 899
167 167 167 248 233 208
E
148 148 222 283 289 289
F
102 102 108 111 181 181
78 78 78 170 165 125
456 456 456 616 616 746
J
14 14 14 14 14 216
Form RZ-NA-I-FT, Mfg No. 173473 Rev 8, Page 5
11. Venting
DANGER: Check the Model No. on the rating plate. If there is a suffix -LN or -CV, DO NOT USE these
venting instructions. Model FT heaters with either of these suffixes have special venting r equirements;
follow the instructions in Form RZ 433-CV/LN.
WARNING: Units installed in multiples require individual vent pipe runs and vent caps. Manifolding
of vent runs is not permitted due to possible recirculation of combustion products into the building and
possible back pressure effects on the combustion air proving switch.
Venting must be in accordance with the National Fuel Gas Code Z223.1 or CAN/CGA B149.1 and B149.2, Installation Code for Gas Burning
Appliances and Equipment, and all local codes. Local requirements supersede national requirements.
These power-vented unit heaters are designed to operate safely and efficiently with either a horizontal or vertical vent. (Horizontal vent run is
recommended for maximum fuel savings.) Comply with the specific requirements and instructions in the following paragraphs.
If this heater is replacing an existing heater, be sure that the vent is sized properly for the heater being installed. A properly sized vent system is
required for safe operation of the heater. An improperly sized vent system can cause unsafe conditions and/or create condensation. Do not vent into
an existing gravity vent or chimney.
Specific Venting Requirements (read all before installing)
1. Vent Pipe - The type of vent pipe required depends on the size of heater, the type of installation, and the vent configuration. Determine the vent
pipe type from the table below.
Vent pipe diameters are listed in the Maximum Permissible Vent Length Table in No. 3. Select the vent pipe type and one of the flue pipe diameter(s)
listed in the Table for the heater size being installed. If the vent being installed is a residential horizontal with Category I pipe, special vent pipe
diameter and length requirements apply.
T ype of Installation Vent Configuration Type of VENT Pipe Requir ed
COMMERCIAL/ Horizontal V ent Use either vent pipe approved for a Category III appliance
INDUSTRIAL OR appropriately sealed 26-gauge galvanized steel or equivalent
(ANSI Z83.8 and single-wall pipe.
CAN/C.G.A. 2.6) - If local code requires, the terminal section may be double-wall pipe
Applies to all Sizes with a single-wall vent run.
At least 1/2 of the Vent pipe listed above for a horizontal power-vented system
equivalent vent may be used, OR vent pipe approved for a Category I heater
length is Vertical may be used. Single-wall pipe or double-wall (Type B) vent pipe
are suitable for use with a Category I heater.
If local code requires, the terminal section may be double-wall
pipe with a single-wall vent run.
RESIDENTIAL Horizontal or Use either vent pipe approved for a Category III appliance OR vent
(IAS Requirement 10-96) Vertical Vent pipe approved for a Category I heater. Single-wall pipe or double-wall
- Applies only to (Type B) vent pipe are suitable for use with a Category I heater.
Sizes 30, 45 and 60 (Special vent pipe size and vent length requirements apply to a
residential horizontal vent with Category I pipe.)
If local code requires, the terminal section may be double-wall pipe
with a single-wall vent run.
2.
Venter (Flue) Outlet
Venter
Outlet:
Model Size 30-125 150-250 300
Outlet Diameter 4" 5" 6"
Venter Outlet Att achment Requirement s:
• A 4" to 3" vent reducer is required whenever 3" diameter
vent pipe is used on Sizes 30, 45, 60, or 75. See the Vent
Length Table in Paragraph No. 3.
• A 4" to 5" vent increaser collar is required whenever 5" diameter vent pipe is used on Sizes 45 and 60. See the special
venting requirements for a horizontal residential Category I
vent in Paragraph No. 3.
• A minimum of 12" of straight pipe is required at the venter
outlet before installing an elbow in the vent system. An elbow should never be attached directly to the venter. An elbow attached to the straight pipe can be in any position at or
above horizontal. See Figure 5.
Form RZ-NA-I-FT, Page 6
Figure 5 - Alternate
Vent Directions
• vent in any position
above horizontal
12
(305mm)
Minimum
• a minimum of 12"
(305mm) of straight
pipe is required before
an elbow
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