Mestek R (B,S,M) D SERIES User manual

Form #43219040
Oct 2013
INSTALLATION AND OPERATION INSTRUCTIONS
OWNER / INSTALLER: For your safety this manual must be carefully and thoroughly
read and understood before installing, operating or servicing this
heater.
INFRARED RADIANT CERAMIC HEATER
R (B,S,M) D SERIES
! INSTALLER: This manual is the property of the owner. Please present this manual
to the owner when you leave the job site.
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.
In locations used for the storage of combustible materials, signs must be posted to
specify the maximum permissible stacking height to maintain the required clearances
from the heater to the combustibles. Signs must either be posted adjacent to the
heater thermostats or in the absence of such thermostats, in a conspicuous location.
!IMPORTANT: SAVE THIS MANUAL FOR FUTURE REFERENCE.
Mestek, Inc.
260 North Elm St. • Westfield, MA 01085
Telephone [phone] • Fax [phone] • www.mestek.com
NOT FOR RESIDENTIAL USE.
This heater is not approved in any residential application. This includes (but is not
limited to) the home, living quarters, attached garages, etc. Installation in residential
indoor spaces may result in property damage, asphyxiation, and serious injury or
death.

Form #43219040
Oct 2013
TABLE OF CONTENTS
SECTION
DESCRIPTION
PAGE
SECTION
DESCRIPTION
PAGE
1) Safety ................................................................................... 2 11) Ventilation................................................................ 13
2) Installer Responsibility ...................................................... 2 12) Lighting and Shutdown Instructions .................... 13
3) General Information ........................................................... 213) Sequence of Operation .......................................... 14
4) Minimum Clearances To Combustibles .......................... 414) Cleaning and Annual Maintenance...................... 15
5) R (B,S,M) D Series Specifications .................................... 6 15) Burner Operation/Troubleshooting...................... 15
6) R (B,S,M) D Series Dimensions ........................................ 716) Optional Parabolic Reflector Extension ............. 18
7) Hanging ................................................................................ 717) Optional Protective Reverb Screen ...................... 18
8) Gas Connections and Regulation..................................... 818) Replacing Parts....................................................... 18
9) Instructions for Pressure Test Gauge Connection ......... 10 19) Installation Data ..................................................... 18
10) Electrical Connections ....................................................... 11 20) Replacement Parts Guide ..................................... 19
21) Warnings Card......................................................... 20
This heater complies with Z83.19 (current standard) and CSA 2.35. Copies of the National Fuel Gas Code
(ANSI Z223.1-latest edition) are available from the CSA at 8501 East Pleasant Valley Road, Cleveland, Ohio
44131 or 55 Scarsdale Road, Don Mills, Ontario M3B 2R3. All NFPA codes are available from the National
Fire Protection Association, Batterymarch Park, Quincy, Massachusetts 02269.
1
WHAT TO DO IF YOU SMELL GAS:
! DO NOT try to light any appliance. Extinguish any open flame. Open windows.
! DO NOT touch any electrical switch. DO NOT use any telephone in your building.
! Immediately call your gas supplier from a neighbor’s telephone. 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.
♦If the information in these instructions is not followed exactly, a fire or explosion
may result causing property damage, personal injury or death.
♦DO NOT store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.

Form #43219040
Oct 2013
1) SAFETY
This heater is a self-contained infrared radiant ceramic heater. Safety information required during installation
and operation of this heater is provided in this manual and the labels on the product. The installation, service
and maintenance of this heater must be performed by a contractor qualified in the installation and service of
gas fired heating equipment.
All personnel in contact with the heater must read and understand all safety information, instructions and
labels before operation. The following symbols will be used in this manual to indicate important safety
information.
Warning instructions must be followed to prevent or avoid hazards which
may cause serious injury, property damage or death.
Caution instructions must be followed to prevent incorrect operation or
installation of the heater which may cause minor injury or property
damage.
2) INSTALLER RESPONSIBILITY
The installer is responsible for the following:
The heater installation, electrical and gas supplies must be installed in accordance with these
installation instructions and any applicable codes and regulations.
Every heater shall be located with respect to building construction and other equipment so as to permit
access to the heater.
Each installer must follow the clearances to combustible materials for the heaters.
Install the heater so that the supports and hangers are correctly spaced in accordance with these
instructions. The heater must be supported by materials having a working load limit of at least 87lbs.
Supply the owner with a copy of these Installation and Operation Instructions.
Gravity or mechanical means shall be provided to supply and exhaust at least 4 CFM per 1,000 Btu/hr
input of installed heaters.
Never use the heater as a support for a ladder or other access equipment. Do not hang anything from the
heater.
Supply all installation materials necessary that are not included with the heater.
Check the nameplate to make sure that the burner is correct for the gas type in the building.
3) GENERAL INFORMATION
This heater is a self-contained infrared radiant ceramic heater for use in locations where flammable gases or
vapors are not generally present (as defined by OSHA acceptable limits) and is intended for the heating of
nonresidential spaces.
”For indoor installation only. Not for
use in residential dwellings.”
«Installation à l’intérieur seulement. Ne
pas installer dans un logement.»
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Form #43219040
Oct 2013
SAFETY REQUIREMENTS
The heater area must be kept clear and free from combustible materials, gasoline and other flammable
vapors and liquids.
This heater is designed for use with one type of gas (LPG or Natural). Make sure that the type of gas to
be supplied to this heater matches that shown on the heater rating plate.
DO NOT install this heater directly onto an LPG container or propane cylinder without directions from your
propane company. LPG containers (propane cylinders) must not be stored indoors or in the vicinity of any
gas-burning appliance.
Building owner and occupants should be alerted to the hazards of high surface temperatures and should
stay away to avoid burns or clothing ignition.
Clothing or other flammable materials should not be hung from the heater or placed on or near the
heater.
NEVER attempt to service the heater while it is plugged in, operating or hot. Any guard or other
protective device removed for servicing a heater must be replaced prior to operating the heater.
Installation and repair should be done by a licensed contractor qualified in the installation and service of
gas heating equipment. The heater should be inspected before use and at least annually by a qualified
service person. More frequent cleaning may be required as necessary. It is imperative that the control
compartment, air passageways and burner of the heater be kept clean.
INSTALLATION REQUIREMENTS
Installation of this heater must conform with local codes or, in the absence of local codes, with the National
Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CSA B149.1. In
Canada, the installation must conform to current CSA B149.1 (The Natural Gas and Propane Installation
Code) in the absence of local codes. Heaters shall be installed by a licensed contractor or licensed installer.
Clearances to combustibles as outlined in this manual should always be observed. In areas used for storage
of combustible materials where they may be stacked below the heater, NFPA54 requires that the installer
must post signs that will “specify the maximum permissible stacking height to maintain the required
clearances from the heater to combustibles.”
Every heater shall be located with respect to building construction and other equipment so as to permit
access to the heater. Each installer shall use quality installation practices when locating the heater and must
give consideration to clearances to combustible materials, vehicles parked below, lights, overhead doors,
storage areas with stacked materials, sprinkler heads, gas and electrical lines, and any other possible
obstructions or hazards. Consideration also must be given to service accessibility.
The heater, when installed in aircraft hangars and public garages, must be installed in accordance with
ANSI/NFPA 409-latest edition (Standard for Aircraft Hangars), ANSI/NFPA 88a-latest edition (Standard for
Parking Structures), and ANSI/NFPA 88b-latest edition (Standard for Repair Garages) with the following
clearances:
a. At least 10 feet above the upper surfaces of wings or engine enclosures of the highest aircraft that may
be housed in the hangar and at least 8 feet above the floor in shops, offices, and other sections of
hangars communicating with aircraft storage or service areas.
b. At least 8 feet above the floor in public garages. Minimum clearances marked on the
heater must be maintained from vehicles parked below the heater.
a. Installation of this appliance is to be in accordance with latest edition of CSA B149.1 (The Natural Gas
and Propane Installation Code)
b. For installation in public garages or aircraft hangars, the minimum clearances from the bottom of the
infrared heater to the upper surface of the highest aircraft or vehicle shall be 50 percent greater than the
certified minimum clearance, but the clearance shall not be less than 8 feet.
Although these heaters may be used in many applications other than space heating (e.g., process heating),
Mestek will not recognize the warranty for any use other than space heating.
3
(FOR CANADA ONLY)

Form #43219040
Oct 2013
This heater is for Indoor Installation only and can be used in Unvented mode. The term Unvented actually
means Indirect Vented. While the products of combustion are expelled into the building, national codes
require 4 CFM/1000 BTU of heater input ventilation in the building to dilute these products of combustion.
This ventilation may be provided by gravity or mechanical means.
This heater is not an explosion proof heater. Where the possibility of exposure to volatile and low flash point
materials exists, it could result in property damage or death. This heater must not be installed in a spray
booth where the heater can operate during the spraying process. Consult your local fire marshal or insurance
company.
Certain materials or objects, when stored under the heater, will be subjected to radiant
heat and could be seriously damaged. Observe the Minimum Clearances to Combustibles listed in the
manual and on the heater at all times.
4) MINIMUM CLEARANCES TO COMBUSTIBLES
For maximum safety the building must be evaluated for hazards before installing the heater system.
Examples include, but are not limited to:
Gas and electrical lines
Combustible and explosive materials
Chemical storage areas
Areas of high chemical fume concentrations
Provisions for accessibility to the heater
Adequate clearances around the openings
Combustion and ventilating air supply
Vehicles parking areas
Vehicles with lifts or cranes
Storage areas with stacked materials
Lights
Sprinkler heads
Overhead doors and tracks
Dirty, contaminated environment
A critical safety factor to consider before installation is the clearances to combustible materials. Clearance to
combustibles is defined as the minimum distance you must have between the infrared surface, or reflector,
and the combustible item. Considerations must also be made for moving objects around the infrared heater.
The following is a partial list of items to maintain clearances from:
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Form #43219040
Oct 2013
Combustible Items Include:
Wood
Paper
Fabric
Chemicals
Wall or roof insulation
Moving Objects Include:
Overhead doors
Vehicles on lifts
Cranes
Hoists
Car wash equipment
When installing the infra-red heater system, the minimum clearances to combustibles must be maintained. These
distances are shown in Chart below and on the heater. If you are unsure of the potential hazards, consult your local
fire marshal, fire insurance carrier or other qualified authorities on the installation of gas fired infra-red heaters for
approval of the proposed installation. Install the warnings card supplied with each heater and complete the blank
spaces using the clearances from combustibles table below. See Section 21 for a printed copy of the warnings
card.
Minimum clearances shall be measured from the outer surfaces as shown below:
MINIMUM CLEARANCES TO COMBUSTIBLES
MODEL
R (B,S,M) D Series
Mounted Horizontally
Mounted at 35º Angle
Angle
Mounting
SIDES
CEILING
BELOW
BELOW
FRONT
REAR
w/Standard
Reflector
w/Reflector
Extension
w/Standard
Reflector
w/Reflector
Extension
w/Standard
Reflector
w/Reflector
Extension
RD030 RD035
RD033 RD040
30”
36”
72”
100”
72”
100”
36”
50”
30”
(degree)
0º min
35º max
RD060 RD070
RD066 RD080
48”
48”
98”
137”
98”
137”
48”
68”
36”
0º min
35º max
RD100
RD120
48”
64”
128”
180”
128”
180”
60”
84”
48”
0º min
35º max
RD132 RD160
RD140
60”
64”
136”
190”
136”
190”
64”
90”
48”
10º min
35º max
NOTE: The clearance to combustible materials noted above must be maintained at all times and the same
clearance distances must be adhered to from any other materials that may be damaged by temperatures 90oF
above the ambient temperature. It is the installer’s responsibility to ensure that building materials with a low
heat tolerance (such as plastic, vinyl siding, canvas, tri-ply etc.) which may degrade at lower temperatures are
protected to prevent degradation. Clearances to combustibles are posted on the reflector near the control end
of the heater.
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Form #43219040
Oct 2013
Fire sprinkler heads must be located at an appropriate distance from the heater. This distance
may exceed the published clearance to combustibles. Certain applications will require the use of high temperature
sprinkler heads or relocation of the heaters.
Sprinkler systems containing propylene glycol or other flammable substances are not to be used in conjunction
with this heater without careful consideration for and avoidance of potential fire or explosion hazards. For further
information consult NFPA 13. Always observe applicable state and local codes.
5) R (B,S,M) D SERIES SPECIFICATIONS
MODEL NO.
BTU/HR INPUT
NUMBER
OF BURNERS
ORIFICE SIZE
SHIPPING WEIGHT
MINIMUM
MOUNTING
HEIGHT (feet)
Natural Gas
Propane Gas
R (B,S,M) D 030-N1C
33,000
1
3/32”
n/a
30 lbs.
11
R (B,S,M) D 035-N1C
35,000
1
#41
n/a
30 lbs.
12
R (B,S,M) D 040-N1C
40,000
1
#38
n/a
30 lbs.
12
R (B,S,M) D 060-N1C
65,000
2
3/32”
n/a
35 lbs.
13
R (B,S,M) D 070-N1C
70,000
2
#41
n/a
35 lbs.
13
R (B,S,M) D 080-N1C
80,000
2
#38
n/a
35 lbs.
14
R (B,S,M) D 100-N1C
100,000
3
#41
n/a
48 lbs.
15
R (B,S,M) D 120-N1C
120,000
3
#38
n/a
48 lbs.
16
R (B,S,M) D 140-N1C
140,000
4
#41
n/a
58 lbs.
17
R (B,S,M) D 160-N1C
160,000
4
#38
n/a
58 lbs.
18
R (B,S,M) D 033-L1C
33,000
1
n/a
#52
30 lbs.
11
R (B,S,M) D 066-L1C
66,000
2
n/a
#52
35 lbs.
13
R (B,S,M) D 100-L1C
99,000
3
n/a
#52
48 lbs.
15
R (B,S,M) D 132-L1C
132,000
4
n/a
#52
58 lbs.
17
MODEL SUFFIX
GAS-PIPE
CONNECTION:
One Orifice Per Burner
Gas Type:
Ignition System:
N = Natural
L= Propane
1= Direct Spark (115 Volt / 0.40 Amp / 60 Hz)
1/2” NPT (Female)
*MOUNT HEATERS AS HIGH AS POSSIBLE. Minimums are shown as a guideline for human comfort and uniform
energy distribution for complete building heating applications. Consult your Mestek representative for the
particulars of your installation requirements.
6
INSTALLER
In locations used for storage of combustible materials where they may be stacked below the heater,
NFPA 54 requires that the installer must post signs that will “specify the maximum permissible
stacking height to maintain the required clearances from the heater to combustibles.” Mestek
recommends posting these signs adjacent to the heater thermostat or other suitable location that will
provide enhanced visibility. It is important to provide warnings to alert individuals of potential hazards
and safety actions. Posted signs should state the hazards for the particular application and be legible
to building occupants.

Form #43219040
Oct 2013
6) R (B,S,M) D SERIES DIMENSIONS
7) HANGING
The heater can be mounted with the reflector horizontal or angled up to 35º from horizontal. When the heater is to be angle
mounted, make sure the gas manifold assembly is on the lower side of the heater. Coil chains (No. 2 or larger) or rigid supports
may be used to mount the heater, which must be suspended from a permanent structure with adequate load capacity. The gas
manifold assembly tube must be level, and for angled mounting, it must be at the LOWER end of the heater. All “S” hooks and
eyebolts must be manually crimped closed by the installer.
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Form #43219040
Oct 2013
8) GAS CONNECTIONS AND REGULATION
1. Connect to the supply tank or manifold in accordance with the latest edition of National Fuel Gas Code (ANSI
Z223.1), and local building codes. Authorities having jurisdiction should be consulted before the installation is
made.
2. All gas supply lines must be located in accordance with the required clearances to combustibles below the
heater as listed on the nameplate of the heater.
3. Pipe joint compounds must be resistant to the action of liquefied petroleum gases.
4. Where local codes do not prohibit, a CSA or U.L. approved flexible connector (minimum 5/8” I.D.) is
recommended between the rigid piping and the heater. A union and an approved shut-off valve should be
installed before the control valve inlet. The shut-off valve should be installed within 6 feet of the union.
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Form #43219040
Oct 2013
5. This appliance is equipped with a snap-opening, combination
gas valve. The maximum supply pressure to the appliance is
14” W.C. or 1/2 P.S.I. If the line pressure is more than the
maximum supply pressure, then use a line regulator as
indicated in the following illustration, or a line regulator which
corresponds to the supply pressure.
6. If a second stage regulator is used and gas seeps through it, the
redundant combination gas valve is designed to lock out.
Pressure build-up in the supply lines prior to the heater must be
released before proper heater operation.
7. After all gas connections have been made, make sure the heater
and all gas outlets are turned off before the main gas supply is turned on. Turn the gas pressure on and check
for leaks. To check for leaks, apply a soapsuds solution to all connections and joints or check by one of the
methods listed in Appendix D of the National Fuel Gas Code, ANSI Z223.1-(latest edition).
9
Certified connections are
recommended to be installed as
shown, in one plane, and without
sharp bends, kinks or twists. The gas
take off from the supply line must be
parallel to the burner gas inlet
connection.
If the maximum supply pressure is less
than ½ psig, a second stage regulator
is not required.

Form #43219040
Oct 2013
9) INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION
Supply Pressure
1. The installer will provide a 1/8” N.P.T. plugged tapping, accessible for test gauge connection immediately
upstream of the gas supply connection to the heater.
Manifold Pressure:
1 Turn the gas valve to the “OFF” position. Remove the 1/8” plug from the combination gas valve at the outlet
pressure tap and connect the 1/8” nipple to the tapped hole. Connect gauge to nipple. Turn on the gas
supply.
2. With the main burner operating, check the burner manifold pressure using a water manometer. The
combination gas valve is factory set and should not be adjusted. If adjustment is required, remove the cover
screw. Using a small screwdriver, turn the adjustment screw clockwise to increase, or counter-clockwise 
to decrease the gas pressure to burner. Replace the cover screw.
3. Gauges that measure in pounds per square inch are not accurate enough to measure or set the manifold
pressure. Use a water manometer or a gauge calibrated in inches of water column. All measurements MUST
BE made when this heater and all other gas burning equipment that is connected to the gas supply system are
operating at maximum capacity.
GAS PRESSURE TABLE
HEATER MODEL
GAS
TYPE
MANIFOLD
PRESSURE
SUPPLY PRESSURE
Minimum
Maximum
R (B,S,M) D (030, 035, 040, 060, 070, 080, 100
120, 140 & 160) N1C
Natural
6” W.C.
7” W.C.
14” W.C.
R (B,S,M) D (033, 066, 100 & 132) L1C
Propane
10” W.C.
11” W.C.
14” W.C.
Minimum permissible gas supply pressure for purpose of input adjustment.

Form #43219040
Oct 2013
10
10) ELECTRICAL CONNECTIONS
1. All electric wiring shall conform to the latest edition of the National Electrical code (ANSI/NFPA No. 70), or the
code legally authorized in the locality where the installation is made.
2. The unit must be electrically grounded in accordance with the National Electrical code (ANSI/NFPA No. 70-latest
edition). In Canada, refer to current standard C22.1 Canadian Electrical Code Part 1.
3. The wiring providing power to the heater shall be connected to a permanently live electrical circuit, one that is not
controlled by a light switch.
4. The power supply to the unit should be protected with a fused disconnect switch or circuit breaker. A service
switch, as required by local codes, shall be located in the vicinity of the heater (check local codes for allowable
distances) and should be identified as Heater Service Switch. All electrical wiring must be located in accordance
with the required Clearances to Combustibles below the heater as listed on the nameplate on the heater.
5. When connecting the supply circuit to the heater, wiring material having a minimum size of 14 AWG and a
temperature rating of at least 90˚C shall be used.
CONNECTION WIRING DIAGRAM –Direct Spark Ignition
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Form #43219040
Oct 2013
FIELD CONNECTION AND THERMOSTAT WIRING DIAGRAMS
A. LINE VOLTAGE (120V) THERMOSTAT CONNECTIONS –SINGLE HEATER PER THERMOSTAT
B. LINE VOLTAGE (120V) THERMOSTAT CONNECTIONS –MULTIPLE HEATERS PER THERMOSTAT
C. LOW VOLTAGE (24V) THERMOSTAT CONNECTIONS –MULTIPLE HEATERS PER THERMOSTAT –
(POWER SUPPLIED FROM FAN CENTER RELAY)
D. LOW VOLTAGE (24V) THERMOSTAT CONNECTIONS –MULTIPLE HEATERS PER THERMOSTAT –
(POWER SUPPLIED FROM STEP-DOWN TRANSFORMER)
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Form #43219040
Oct 2013
11) VENTILATION
Where unvented infrared heaters are used, natural or mechanical means shall be provided to supply and exhaust
at least 4 cfm per 1000 Btu per hr input of installed heaters.
Exhaust openings for removing flue products shall be above the level of the heaters.
This heater requires ventilation in the building to dilute the products of combustion and provide fresh air for
efficient combustion. Power ventilation is recommended and the minimum vent flow required is as follows:
RD030, RD033, RD035
140 cfm
RD100
400 cfm
RD040
160 cfm
RD120
480 cfm
RD060, RD066, RD070
280 cfm
RD132, RD140
560 cfm
RD080
320 cfm
RD160
640 cfm
If gravity ventilation is used, the required square feet of inlet and outlet vent area (depending on height and
temperature difference) is as follows:
RD030, RD033, RD035
0.49 s/f
RD100
1.48 s/f
RD040
0.57 s/f
RD120
1.72 s/f
RD060, RD066, RD070
0.98 s/f
RD132, RD140
1.97 s/f
RD080
0.98 s/f
RD160
2.30 s/f
The General Ventilation Rules outlined in ASHRAE GUIDE AND DATA BOOK should be observed when locating
vents. Exhaust vents must be located at the highest point above and in the vicinity of the heaters and the inlet
vents must be located below the level of the heaters. Inlet openings in the building should be well distributed high
in the sidewalls and should direct incoming air upward to dilute products of combustion while preventing drafts at
lower levels. Inlets are typically 1 to 3 sq. ft. Local codes may require that mechanical exhaust systems be
interlocked with the function simultaneously or allow control of exhausters to humidistat.
12) LIGHTING AND SHUTDOWN INSTRUCTIONS
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Form #43219040
Oct 2013
DIRECT SPARK IGNITION SYSTEM (Ignition Suffix “1”)
1. Turn on the gas supply.
2. Set the thermostat to call for heat.
3. Ignition should occur immediately.
4. If the burner fails to light, or flame is not detected during the first trial for ignition (a period of approximately
10 seconds) the gas valve is de-energized and the control goes through an interpurge delay of approximately
15 seconds before another ignition attempt. The control will attempt two additional ignition trials before going
to lockout, and the valve will be de-energized immediately.
5. If the heater does not light, shut off the gas completely for 5 minutes before attempting to relight.
6. The heater must be grounded. Poor grounding will give nuisance lockouts, particularly
during momentary power interruptions.
7. To shut down the heater, turn off the gas and the electrical supply.
NOTE: The lighting and shutdown instructions are also shown on the permanent nameplate attached to the
heater.
13) SEQUENCE OF OPERATION
The chart below shows the sequence of operation for the normal operating cycle of the heater when connected
to a permanent 120V power supply and the heater is turned on and off by a remote 120V thermostat. (See
Section 10)
If the flame is not sensed during sequence T2 then the burner will automatically begin re-ignition sequence T1.
The ignition sequence will be repeated three times with a 15 second inter-purge. If the flame is not
reestablished the heater will go to lockout.
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Form #43219040
Oct 2013
14) CLEANING AND ANNUAL MAINTENANCE
This heater consists of multiple individual atmospheric burners. Due to the variation in tile porosity, there could be
color variations between the burners. This is natural and should not be a cause for concern during the initial
startup.
This heater must be cleaned and serviced at least once before the start of each heating season or at any time the
infrared emitter shows signs of collecting any foreign material on its surface or in the ports, or when anything
obstructs the venturi or the screen. Maximum heating efficiency and clean combustion will be maintained by
keeping the emitter and burner clean. To clean the heater, follow these instructions: 1. Turn off all electrical and
gas supply to the heater. 2. Clean the reflector. 3. Remove the main burner orifice and clean it thoroughly. 4.
Check the venturi opening to be sure it is clean. If there is any evidence of dirt accumulation in the venturi,
remove it.
15) BURNER OPERATION/TROUBLESHOOTING
A) IGNITION MODULE DIAGNOSTICS
The LED located on the ignition module (see Figure) will
flash ON for ¼ second, then OFF for ¼ second during a
fault condition. The pause between fault codes is 3
seconds.
LED Indication
Error Mode
Steady On
Internal Control Failure
2 Flashes
Flame Sense Fault
3 Flashes
Ignition Lockout
B) FLAME SENSOR TESTING
The flame current is the current that passes through the
flame from the sensor to the ground. The minimum flame
current necessary to keep the system from lockout is 0.7
microamps. To measure the flame current, connect an
analog DC microammeter to the FC- and FC+ terminals per
diagram. The meter should read 0.7 µA or higher when the
burner is running full on. If the meter reads below zero, the
meter leads are reversed. Disconnect power and reconnect
the meter leads for proper polarity.
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Form #43219040
Oct 2013
C) TROUBLESHOOTING CHART
TROUBLE
POSSIBLE CAUSE
SOLUTIONS
Heater is not glowing
red…
The supply gas pressure is too low.
Improper size of gas piping.
The orifice is clogged.
Incorrect orifice size.
Check the manifold gas pressure and
adjust if necessary.
If you are not sure of the performance,
use the NFPA 54 gas pipe sizing table.
Clean the orifice.
See the instructions for correct orifice
size and replace if necessary.
Heater will not
attain the desired
temperature…
There is insufficient heat in the building
for heat loss (i.e., not enough heaters).
The thermostat sensing bulb is
incorrectly placed.
The thermostat is out of calibration.
Conduct heat loss and add heaters or
other source of heat as necessary.
Reposition as necessary for proper
operation. NOTE: The sensing bulb
should be shielded from direct radiation
to prevent short cycling of the heater.
Recalibrate (if possible) or replace.
Flames flaring up,
outside of emitter
surface…
The gas pressure is too high.
Incorrect orifice size.
Incorrect type of gas supplied to the
heater.
Not enough combustion air.
Check the manifold gas pressure and
adjust if necessary.
See instructions for correct orifice size
and replace if necessary.
Check the nameplate to identify the
correct type of gas the heater is equipped
to operate.
Clean the emitter with compressed air.
16

Form #43219040
Oct 2013
C) TROUBLESHOOTING CHART
Continued
17

Form #43219040
Oct 2013
16) OPTIONAL PARABOLIC REFLECTOR EXTENSION ASSEMBLY
The heater is completely factory assembled and requires no field assembly. If the optional parabolic reflector
extension is utilized, locate and identify the end panels
and side panels as shown in the following diagram.
Attach the side panels as shown. Attach the end panels
so that the end flanges of the end panels overlap the
side panels. Attach the side panels and end panels
together with the screws provided in the kit. Attach the
remaining screws as shown in Detail A. This is to
ensure that the Parabolic Reflector Extension is
securely attached to the reflector. The clearances to
combustibles (shown on the clearance label that is
secured to the reflector on the control end of the heater
and in Section 4 of these instructions) must be closely
observed. Please order the Parabolic Reflector
Extension Kit using the Part Numbers below:
Model No.
R (B,S,M) D Series
Parabolic Reflector
Extension Kit Number
RD030, RD033, RD035,
RD040
#43822010
RD060, RD066, RD070,
RD080
#43822020
RD100, RD120
#43822030
RD132, RD140, RD160
#43822040
17) OPTIONAL PROTECTIVE REVERB SCREEN
The optional protective Reverb Screen acts as a safety net
in the unlikely event that the ceramic tile assembly is
broken by an outside force. In addition, it increases the
overall emissivity of the radiating surface with a blackbody
radiation effect. It is recommended in high-traffic areas as
well as where improved radiant output is desired. Please
order the Protective Reverb Screen using the Part Numbers
listed to the right:
18) REPLACING PARTS
At all times when parts are being replaced, ensure that both the gas and electrical supplies are disconnected.
Various parts are available from the factory for replacement by a licensed service person. Refer to the exploded
parts guide in Section 20 for all replacement parts.
19) INSTALLATION DATA
Date of
Installation:
Number of
Heaters in System:
Heater Serial Number:
Heater Model:
R (R,S,
N=Natural Gas
L =Propane Gas
18
Model No.
R (B,S,M) D Series
Reverb Screen
Kit Number
RD030, RD033, RD035,
RD040
#43876010
RD060, RD066, RD070,
RD080
#43876020
RD100, RD120
#43876030
RD132, RD140, RD160
#43876040

Form #43219040
Oct 2013
20) REPLACEMENT PARTS GUIDE
ITE
M#
PART #
DESCRIPTION
ITE
M#
PART #
DESCRIPTION
1
30333110
Valve VR8205M-2971 @ 10” W.C. – Propane Gas
17
43908010
Frame Assembly (1 Burner Unit)
2
30333120
Valve VR8205M-2989 @ 6” W.C. – Natural Gas
18
43908020
Frame Assembly (2 Burner Unit)
3
30279000
Transformer AT120B1051
19
43908030
Frame Assembly (3 Burner Unit)
4
30632030
Spark Module, Fenwal #35-605950-015
20
43908040
Frame Assembly (4 Burner Unit)
5
30295020
Electrode PSE-GF9
21
03548000
Junction Box, 2 x4 x1½
6
3056704
Ignition Cable 7”
22
03606000
Cover Plate
7
43856029
Burner Assembly Kit (Ignition Unit)
23
43849000
Ignition Control Bracket
8
43856039
Burner Assembly Kit (2nd, 3rd, and 4th Unit)
24
43872380
Orifice #38 for RD040, RD080, RD120, RD160 –Natural Gas
9
43862010
Manifold for RD033, RD035, RD040
25
43872410
Orifice #41 for RD035, RD070, RD100, RD140 –Natural Gas
10
43862020
Manifold for RD060, RD066, RD070, RD080
26
43872980
Orifice 3/32” for RD030, RD060 –Natural Gas
11
43862030
Manifold for RD100, RD120
27
43872520
Orifice #52 for RD033, RD066, RD100, RD132 –Propane Gas
12
43862040
Manifold for RD132, RD140, RD160
28
43219040
Installation and Operation Manual (Not Shown)
13
43847010
Reflector for RD033, RD035, RD040
29
42052030
Label - Connection Wire Diagram
14
43847020
Reflector for RD060, RD066, RD070, RD080
30
42849080
Label –Nameplate (Sterling)
15
43847030
Reflector for RD100, RD120
30a
42849081
Label –Nameplate (Mestik)
16
43847040
Reflector for RD132, RD140, RD160
30b
42849082
Label –Nameplate (Beacon/Morris)
31
43247070
Label –Clearances to Combustibles
32
42875000
Label - General Warnings
19
IMPORTANT:
Please order by Part Number, not by Item
Number.
Refer to complete Model Number when ordering.
All replacement parts available when ordering.
Screws, nuts and washers are standard hardware
items and can be purchased at any local hardware
store.
ALL ILLUSTRATIONS ARE INTENDED TO GIVE THE
GENERAL IMPRESSION OF UNITS ONLY. WE
RESERVE THE RIGHT TO ALTER ANY
SPECIFICATION WITHOUT NOTICE