Ultimate Products SGX, ER, SC, SA, CW User Manual

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-INDEX-

AND MAINTENANCE INSTRUCTIONS

A. INSTALLATION INSTRUCTIONS 2

1. TECHNICAL DATA
(a) General Information

(b) ER-Series heating Models (or GX, CW, AL, SC)
(c) Typical Arrangement of Heater

2 – 4

2. PACKAGING AND SHIPPING

3. MOUNTING CLEARANCES

4. PRE-ASSEMBLY

5. INSTALLATION

6. GAS CONNECTION

7. ELECTRICAL CONNECTION

8. VENT REQUIREMENT AND DETAILS
(a) Unvented units
(b) Vertical Vent
(c) Horizontal Vent

9. FRESH AIR DUCTED INTAKE
(a) Vertical Thru Roof
(b) Horizontal Thru Wall

4 – 5
5 – 6

6
7

8 – 9
10 – 11
12 – 13

13

10. INSTALLATION CHECK OUT AND START UP

B. SERVICE

1. Servicing Instructions

2. Routing Service

3. Replacement of Components

4. User Instructions

C. Appendix ‘A’

D. Appendix ‘B’

Note: All reference to standard specifications, codes, regulations, etc. , are intended to
reflect latest editions included in the ANSI Testing, Construction, Performance and
Installation Standards. (ANSI/ NFPA standard 1985)

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14 – 15
16 – 21

22- 53
54- 56

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WARNING: Improper installation,

adjustment, alteration, service or
maintenance can cause property

damager, injury, or death. Read the

installation, operating, and maintenance

instructions thoroughly before installing or

servicing this equipment.

A. INSTALLATION INSTRUCTIONS

A.1 TECHNICAL DATA

(a) General Information
Model & Heat Input
Information all units:

Gas Supply Connection:

Electrical Supply: 120V, 1 phase, 60H z

Current Rating: 1.2 AMP MAX (Burner-0.3/Fan –

Ignition: Electronic Pr ogram Start-up with

OPTIONS:

1. Modify combustion chamber air intake for fresh air duct.

2. Ultimate Products Black Bulb Thermostat.

3. Control Panel with multi -zone capabilities. (Not A.G.A. Certified)

4. Individual Heater Vent to Exterior.

Notes:

A. Heater is intended for heating non-residential indoor and outdoor spaces and

should only be installed where flammable gases or vapors are not generally
present.

B. Indoor heaters may be suspended either horizontal or at an angle, or may be wall

mounted. Outdoor heaters must be suspended horizontally. SEE SECTION A.3
FOR CLEARANCES.

C. Installation shall conform with local building code requirements and with National

Fuel code ANSI-Z223.1.A. (Latest Edition) and section 7.8A-3; Z223.1 (Latest
Edition).

D. The unit shall be electrically grounded in accordance with National Electric Code

ANSI/NFPA 70-1987.

E. The heater may be installed in aircraft hangars when conformation with

ANSI/NFPA 409-1985 for Aircraft Hangars and in automotive garages when
conforming with ANSI-NFPA 88A (Latest Edition) for Parking Structures and
ANSI/NFPA 88B (Latest Edition) for Repair Garages.

Insure that minimum clearance will be maintained to vehicles parked below
the heater.

½-inch NPT Male

0.9)
Spark Ignition

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Pipe Capacities For Propane and Natural Gas

Pipe Capacities For Propane in Thousands of BTUs Per Hour

For pressure drop of 0.5” W.C., based on low-pressure piping based on 6 oz. per
sq. in. pressure. Based on one Cubic Foot of Propane = 2500 BTUs.

SIZE
PIPE

INCHES

½
¾

1

1¼

1 ½

2
3
4

15 30 45 60 75 90 105 120 150 180 210 240 270 300 450 600
105
425

787.5

1542.5
2425
5040

13545
28035

77.5
300
615

1070
1700
3490

9607.5

19687.5

65
245
505

882.5

1402.5
2835
7875

16222.5

55

212.5
440
770

1212.5
2520

6772.5

14017.5

Pipe Capacities For Natural Gas In Thousands of BTUs Per Hour

For pressure drop of 0.5” W.C. pressure. Based on one Cubic Foot on Natural
Gas = 100 BTUs.

SIZE
PIPE

INCHES

½ 170 118 95 80 71 64 60 55 52 49 44 40 37 34 27 23 21 19
¾ 360 245 198 169 150 135 123 115 108 102 92 83 77 71 57 48 43 39

1 540 440 325 285 250 225 215 195 185 177 155 140 130 120 100 80 70 65 57 48 40
1 ¼ 1125 790 660 570 510 465 440 410 390 375 355 305 280 260 205 180 165 140 125 115 100
1 ½ 1700 1200 1000 865 780 720 670 620 600 570 510 455 430 400 315 265 240 215 195 180 150

2 3100 2225 1855 1600 1450 1375 1250 1175 1120 1075 970 880 820 760 610 530 470 420 390 365 320
2 ½ 5040 3525 3000 2600 2350 2175 2025 1890 1810 1745 1570 1420 1315 1225 995 845 740 660 620 570 500

3 9100 6500 5300 4600 4435 3780 3530 3290 3140 3020 2905 2840 2450 2140 1640 1385 1210 1085 930 900 760
3 ½ 9500 7880 6780 6140 5670 5280 4940 4685 4300 4000 3660 3380 3185 2500 2300 1890 1690 1545 1445 1245

4 9450 8500 7880 7325 6870 6550 6300 5600 5125 4760 4400 3145 3010 2870 2670 2400 2100 1800

10 20 30 40 50 60 70 80 90 100 125 150 175 200 300 400 500 600 700 800 1000

LENGTH OF STRAIGHT PIPE IN FEET

50
190
395

677.5
1070
2205
5985

12600

45

172.5

362.5
630

977.5

2047.5

5512.5

11497.5

40
160
330

582.5

912.5
1890

5197.5
10710 9922.5 8820 8032.5 7560 6930 6615 6300 5040 4410

LENGTH OF STRAIGHT PIPE IN FEET

150 137.5 125 115 107.5 102.5 95 80 67.5
315 282.5 252.5 237.5 220 205 197.5 157.5 137.5

542.5 487.5 440 410 385 362.5 347.5 282.5 237.5

857.5 772.5 700 645 607.5 575 542.5 440 377.5

1732.5 1575 1417.5 1322.5 1245 1165 1117.5 897.5 770

4882.5 4252.5 3937.5 3622.5 3387.5 3232.5 3072.5 2520 2127.5

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NG INFORMATION

A.2 PACKAGING AND SHIPPI

See Appendix ‘A’ for assembly drawings. Materials lists with part numbers and
descriptions for each part will accompany each shipment.

Heaters include: Burner/Control
Radiant Tubes
Reflectors
Brackets
Vacuum Fan
U-Bend (U -Tube Units only)
Wiring Junction Boxes (Straight Tube Units Only)

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A.2 PACKAGING AND SHIPPING INFORMATION (CONT.)

Options: Fresh air Intake (Mounted to Burner/Control)
Fan Vent Adapters- Vertical and Horizontal
Thermostat
Flexible Gas Connector
Ball Valve
Vent Hoods
Hanging Assembly (chain, etc.)

Shipping packages for individual projects will be boxed and crated as outlined
on the specific bill of lading.

A.3 MOUNTING CLEARANCES

The heater should be positioned so that clearances from combustible materials

will meet or exceed those shown in the following table. Also, ensure that there is
at least 6” clearance on all sides of burner for service access and for free flow of
combustion air. When heater is angle mounted, the burner/control assembly
must remain horizontal.

Minimum Clearances To Combustibles In Inches

Model Input – BTU / HR A B D E

GH / ER / AL / SC 12 40,000 43 20 4 6
GH / ER / AL / SC 15 50,000 66 20 * 6
GH / ER / AL / SC 18 60,000 66 20 * 6
GH / ER / AL / SC 22 75,000 66 20 * 6
GH / ER / AL / SC 29 100,000 72 30 12 6
GH / ER / AL / SC 38 130,000 72 30 12 6
GH / ER / AL / SC 44 150,000 93 36 12 6

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A.3 MOUNTING CLEARANCES (CONT.)

Mounting

40,000 – 75,000 B.T.U 100,000 – 130,000 B. T. U. 150,000 B. T. U

MOUNTING HEIGHT ABOVE FLOOR

Position
Horizontal
Recommended
Minimum

Inclined
Recommended
Minimum

14 ft

12ft

11ft
10ft

Ensure that there is adequate provision in the building for combustion and
ventilating air supply. Installation must meet minimum requirements of applicable
codes.

When installed in public garages and airplane hangars ensure that minimum
clearances specified in ANSI/NFPA 88A or B, ANSI/NFPA 409, respectively, are
met; and in no case less than those in the preceding tables.

A.4 PRE-ASSEMBLY

Each heating unit is assembled as follows:

Note that the emitter tube consists of more than one tube. The tube to be
connected to the burner box is the thinner stainless steel or aluminized steel
tube. Other tubes may be mild (thicker tubes), stainless or aluminized steel.
Connections between tubes is by a coupling with three bolts. The coupling has
an inner compression sleeve that holds the pipe securely when the nuts are
turned tight.

Support the assembled radiant tube with screws facing upwards, on blocks, etc.
at least 6” above floor level, preferably under the position of installation. Ensure
that the tube is clear internally.

Slip the suspension brackets onto the tube assembly and attach by means of “U”
bolts and nuts. Note that there are two types of brackets; type C and type B.
Type C attaches reflectors together. Bracket C & B are placed on the assembled
radiant tube in position shown on the assembly drawing in APPENDIX “A”.
Tighten nuts to secure brackets to the tubes at spacing indicated with all brackets
oriented in the same level position.

NOTE: CLOSE ALL S-HOOKS TO INSURE THAT THE CHAINS DO NOT
COME OFF OF THE HOOK.

16ft
14ft

13ft
12ft

18ft
16ft

15ft
14ft

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A.5 INSTALLATION

Heater units: At this point raise the tube assembly into position and suspend from
previously fixed chains (9 gauge min. galvanized welded link construction), or
attach to wall mounting brackets. Wall mounting brackets must support heater at
an angle of inclination of 45° ±10°. Longer tube assembly may be raised in more
than one sub-assembly with final tube connection made in the air.

It is recommended that the heater be suspended to slope slightly downward from
the burner approximately 1 inch in 20 feet, but not more than 2-inches total.

Remove the protective plastic film from the reflector surface. Note that each
section of reflector has two holes punched at one end. This end is firmly fixed by
bolting to the lugs provided on the reflector bracket type C. The other end of each
reflector section is free floating in suspension bracket type B thereby allowing for
thermal expansion.

Position reflector sections so that ends with holes lap at type C brackets and
secure with nuts, bolts, and large washers provided in the burner box crate.
Reflector should be allowed free movement through brackets type B. Note:
Reflectors may be installed before tube is raised to position at installer’s option.

Slide burner/control assembly onto the burner end of the radiant tube ensuring it
is fully engaged and upright, (i.e. with air inlet cover plate facing upwards) and
secure with locking screws provided.

Slide the fan assembly on the opposite end of radiant tube, ensuring that it is fully
engaged with fan outlet facing horizontally for outdoor installations and for indoor
installations either unvented or with horizontal thru wall venting. Fan outlet should
face upward for vertical venting thru the roof.

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A.6 GAS CONNECTION

The gas connection on the heater is ½” NPT external thread.

SERVICE REQUIREMENTS NAT. GAS L.P. GAS

Max. inlet gas supply pressure (in.w.c.)
Min. inlet gas supply pressure (in.w.c.)

10.0

6.5

14.0

11.0

Injector sizes and manifold pressure for the burner are shown in the attached
table for all heater units.

The gas supply piping and connections must be installed so that the minimum
pressure stated is achieved.

A gas shut -off valve and union should be fitted in the gas supply line close to the

heater, and a 1/8 inch N.P.T. plugged tapping, accessible for test gauge
connection, provided immediately upstream of the appliance gas inlet.

It is essential to provide some flexibility in the final gas connection preferably by
use of an approved armored flexible connector or stainless steel expansion loop.
(See Appendix ‘A’)

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Model Designation

Air Inlets

(Inches/ Millimeters)

Natural Gas

Orifice

Liquid Petroleum

Orifice

Input

KW

BTU/HR

GH/ER/AL/SC 12/40,000

GH/ER/AL/SC 15/150000

GH/ER/AL/SC 18/60,000

GH/ER/AL/SC 22/75,000

GH/ER/l/SC 29/100,000

GH/ER/AL/SC 38/130,000

SC/ER/GX

44/150,000

Model Tube

Configuration

S-20 3" 1.125"/29mm 1.312"/33mm 0.130" 1.9 0.080" 6.7
S-25 3" 1.125"/29mm 1.438" /37mm 0.130" 1.9 0.080" 6.7
S-30 3" 1.125"/29mm 1.438" /37mm 0.130" 1.9 0.080" 6.7
U-20 3" 1.125"/29mm 1.187/30mm 0.130" 1.9 0.080" 6.7
U-30 3" 1.125"/29mm 1.187/30mm 0.130" 1.9 0.080" 6.7
S-20 3" 1.312"/33MM 1.438"/37 MM 0.130" 3 0.080" 6.7
S-25 3" 1.125"/29 MM 1.438"/37 MM 0.130" 3 0.080" 6.7

S-30 3" 1.125"/29 MM 1.438"/37 MM 0.130" 3 0.080" 6.7
U-20 3" 1.312"/33MM 1.438"/37 MM 0.130" 3 0.080" 6.7
U-30 3" 1.312"/33MM 1.312"/33 MM 0.130" 3 0.080" 6.7
S-20 3" 1.750"/44 MM 2.00"/50 MM 0.161" 2.4 0.098" 6.7
S-25 3" 1.312"/33 MM 1.438"/37 MM 0.161" 2.4 0.098" 6.7
S-30 3" 1.312"/ 33 MM 1.438"/37 MM 0.161" 2.4 0.098" 6.7
S-40 3" 1.312" /33 MM 1.438"/37 MM 0.161" 2.4 0.098" 6.7
S-20 3" 1.312" /33 MM 1.750"/44MM 0.161" 2.4 0.098" 6.7
S-30 3" 1.312" /33 MM 1.438"/37 MM 0.161" 2.4 0.098" 6.7
S-40 3" 1.312" /33 MM 1.312"/33MM 0.161" 2.4 0.098" 6.7
S-20 3" 1.750"/44 MM 2.625"/67 MM 0.161" 3.8 0.098" 10.5
S-25 3" 1.750"/44 MM 2.00"/50 MM 0.161" 3.8 0.098" 10.5
S-30 3" 1.750"/44 MM 2.00/50 MM 0.161" 3.8 0.098" 10.5
S-40 3" 1.750"/44 MM 1.75"/44MM 0.161" 3.8 0.098" 10.5
U-20 3" 1.750"/44 MM 2.625"/67 MM 0.161" 3.8 0.098" 10.5
U-30 3" 1.750"/44 MM 2.00/50 MM 0.161" 3.8 0.098" 10.5
U-40 3" 1.750"/44 MM 2.00/50 MM 0.161" 3.8 0.098" 10.5
S-40 4" 2.312"/59 MM 2.00"/50 MM 0.182" 4.9 1.20" 10
S-50 4" 2.312"/59 MM 2.00"/50 MM 0.182" 4.9 1.20" 10
S-60 4" 2.312"/59 MM 2.00"/50 MM 0.182" 4.9 1.20" 10
U-35 4" 2.312"/59 MM 2.00"/50 MM 0.182" 4.9 1.20" 10
S-40 4" 2.312"/59 MM 2.625"/67MM 0.206" 4.9 0.136" 10
S-50 4" 2.312"/59 MM 2.625"/67MM 0.206" 4.9 0.136" 10
S-60 4" 2.312"/59 MM 2.625"/67MM 0.206" 4.9 0.136" 10
U-35 4" 2.312"/59 MM 2.625"/67MM 0.206" 4.9 0.136" 10
S-40 4" 2.312"/59 MM 4.00"/100MM 0.228" 4.6 0.149" 10
S-50 4" 2.312"/59 MM 4.00"/100MM 0.228 4.6 0.149" 10
S-60 4" 2.312"/59 MM 4.00"/100MM 0.228 4.6 0.149" 10

U-35 4" 2.312"/59 MM 4.00"/100MM 0.228 4.6 0.149" 10

Tube Dia.

(In)

Burner Intake

(in. / M.M.)

Fan Inlet

(in. / M.M.)

Injector

Diameter

(inches )

Manifold

Pressure

(in.W.C.)

Injector

Diameter

(inches)

Manifold

Pressure

(in./mm)

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A. 7 ELECTRICAL CONNECTION

(a) Burner/Control Internal Wiring

IMPORTANT: All electrical work should be done by a qualified
electrician in accordance with the National Electrical Code
ANSI/NFPA 70.

Supply: 120 V, 60 Hz, single phase
Current Rating: 0.3 amp max

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A. 7 ELECTRICAL CONNECTION (CONT.)

The electrical supply to the heater is by three wires: live, neutral and ground
connections. It is recommended that the supply cable be in metallic conduit to
the 3/4'” hole provided.

Power is ONLY supplied to the terminal in the back of burner as shown below:

Power is supplied to fan through the knock out on the side of the burner housing.

Fan leads should be connected to the burner leads using the wire nuts provided.
Connect yellow/green wire from fan, to green wire of the burner, connect either
black wire from the fan, one to the white and one to the black/brown of burner.
Insure that conduit clamp is firmly tightened.

It is recommended that the electrical circuit controlling the heater or group of
heaters include thermostats, a time switch and if required manual control
switches. All such controls and switch gear must be rated to handle the total
inductive load of the circuit they control. For large installations, the use of relays
or contractors should be considered.

Control panels are available from the manufacturer incorporating multiple Black
Bulb Thermostats controlling up to 10 heaters per thermostat for zone control of
the heated area. Typical External Wiring is shown in diagram. (Control panels are
not A.G.A. design certified.)

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A. 8 VENT REQUIREMENTS AND DETAILS

(1) UNVENTED UNITS: Heaters may be installed without a flue providing the

governing building codes are met and that consideration is properly given to
possibilities of condensation on cold surfaces.

Installation shall meet the following requirements when unvented:

(A) Internal volume of the heated room must be greater than 214 cu. ft. per

100 BTU/HR of heaters installed.

(B) Natural or mechanical means shall be provided to supply and exhaust at

least 4 CFM per 1,000 BTU per hour input of installed heaters.

(C) Combustion gases shall not impinge on combustible materials with a

temperature in excess of 150° F.

(D) The blower discharge must be horizontal.

(2) VERTICAL VENTING : The heater may be installed with a vertical flue. A

down vent elbow must be fitted to the induced draft fan exhaust outlet, which
should be rotated to a vertical position.

A vent elbow designed to accept a 6-inch nominal sheet metal flue pipe is
available as an optional extra.

All flue piping should be adequately supported from the building structure and
terminated with an approved terminal. The maximum flue length is 30 ft. with
a maximum of two bends. All connections should be properly sealed.
Generally, terminal may be located horizontally a dimension equal to its
vertical dimension.

(3) HORIZONTAL VENTING : Individual units may be vented horizontally

through side walls. Venting must be installed in accordance with ANSI
Z2223.1 (NFPA-54) and local codes.

Maximum length of vent is 25 ft. with 2-90 degree long radius elbows.
Runs of 12 ft. or shorter can use 4-inch diameter flue with Ultimate Products
part number V0200.

Runs over 12 ft. should use 6-inch dia. flue pipe. Any portion of flue that
passes through a combustible wall must be insulated or use an approved
insulating thimble.

Recommended parts are Ultimate Products’ (Part # V-0200) for 4-inch flue
and (Part # V-0800) for 6-inch flue. Standard vent terminals must extend at
least 6-inches from the wall and at least 24-inches from any combustible
overhang. Protect the building material from degradation by flue gases.

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A. 8 VENT REQUIREMENTS AND DETAILS (CONT.)

Flue joints should be sealed using RTV high temperature sealant and secured
using at least three (3) sheet metal screws. Should condensation occur flue
should be shortened or insulated.

The terminal must exit the building at least 7 ft. above any area accessible to
the public.

The terminal must be at least 3ft. away from any air intake to the building.
If the heater is equipped with ducted combustion air, the terminal must be at

least 3 ft. away from the air inlet and located higher than the inlet.
The vent terminal must be protected from blockage by snow.

A.9 FRESH AIR DUCTED INTAKE

Whenever the heater is installed in locations where air born dust or other polluted
atmosphere is present; a fresh air supply should be ducted to the burner.

A heater modified for fresh air intake should be specified when ordering. This
model is modified with a 4-inch diameter duct connection at the burner.

A fresh air duct of 4-inch diameter should be installed from the fresh air to the air
intake connection on the burner housing. A flexible jointing piece should be
installed at the burner connection with hose clamps to facilitate the disconnection

when servicing the burner assembly.
The maximum recommended length of fresh air duct is 25 feet and the

maximum number of bends is two (2). The minimum length is 18 inches. The
location of the fresh air duct inlet must be where it will receive dust free clean air.
An Ultimate Products inlet cap with bird screen must be fitted at the inlet of the
duct. If the duct inlet is located above the roof th e underside of the inlet terminal
must be at least 2 ft. above roof level and at least 10 inches above any projection
on the roof within 7 ft. of the inlet.

See Appendix ‘A’ for typical installation drawing and Ultimate Products part
numbers. Intake pipe, fittings, and sealant are not furnished by Manufacturer.

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A.10 INSTALLATION CHECK OUT AND START UP

Inspect installation and ensure that it has been carried out in accordance with
these instructions. Ensure that electrical and gas supplies are isolated.

The gas supply should be purged and tested for soundness in accordance with
Local and National Safety codes.

Open isolating gas valve and test gas connections for soundness using soap
solution.

Remove burner cover plate by unscrewing 6 screws. Take care not to damage

the sealing gasket. Inspect the burner and electrode assemblies ensuring these
are securely fixed and all electrical connections securely made. Replace the
burner cover plate ensuring that the sealing gasket is correctly positioned and the
six screws are fully tightened. The heater will not operate until this plate is

refitted.
Remove the control housing cover plate by unscrewing the five securing screws.
Ensure all internal components are securely fixed and all connections securely

made. Open the manual gas valve.
Switch on the electrical supply to the heater and observe the correct start up

sequence. Ensure that the settings of any time switch and thermostat are such

that the heating system will be required to operate.
The fan will start to run and “Power On” lamp will illuminate. Safe-start checks

are carried out automatically.

After the fan has run up to full speed and a satisfactory vacuum condition has

been established, ignition sequence will commence. The spark ignition will be

energized producing a spark at the ignition electrode. The gas valve will at the

same time be energized.
If the ignition is successful the flame sensing probe and the ignition spark is

switched off. The ‘burner on” lamp indicates that the gas solenoid valve is
energized.

If ignition is unsuccessful the gas valve will close and the spark ignition de-

energized after approximately 6 seconds. For approximately 10 to 20 seconds

the fan will purge the system then re-ignition will be attempted. After three (3)

attempts at ignition the control unit will “lock-out” - the “power on” lamp will

remain illuminated and the fan will continue to run. To reset after “lock-out” switch

off the power supply to the system and wait 5 minutes. Then turn the power on.

If repeated “locked-out” occurs investigate the cause.

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A.10 INSTALLATION CHECK OUT AND START UP (CONT.)

To shut down the heater, switch off the power supply to the system. Automatic
control of the heater or a series of heaters may be achieved by incorporating

thermostats, time switches, manual over -ride switches etc. in the electrical supply

to the heater(s). It is essential to allow a delay of 15 seconds after switching off

the system before attempting to restart.

If at any time after completion of the start up sequence, loss of flame should

occur, the control unit will attempt to reignite. If this is unsuccessful lock out will

occur.

Set burner gas pressure as follows. Switch off the power supply to the heating

system. Connect a ‘U’ tube manometer to the pressure test nipple provided on

the combination gas control valve. Remove the cover from the pressure regulator

revealing the adjustable screw. Start the heater and using a suitable screwdriver

adjust the pressure regulator, turning the screw clockwise to increase the

pressure or counter clockwise to decrease the pressure. Set the pressure to

appropriate in w.c. from the table of dimensions for correct heater description.

Switch off the power supply to the heating system. Disconnect ‘U’ tube

manometer and securely replace screw in pressure test nipple. Replace cover

screw on pressure regulator.

Check the operation of the flame safeguard equipment as follows: With the

heater running normally, switch off the gas supply at the shut off valve. The

heater should attempt to relight and if the gas valve has been left off “lockout”

should occur indicated by the “Power On” light only being illuminated and fan

running.
Check the operation of the vacuum proving switch as follows. With the heater

running normally, pull off the silicone rubber tube connecting the vacuum switch
to the combustion chamber. Within one second, the burner should shut off. Then
replace the tube securely and observe that the heater proceeds to ignit e in the
normal way.

Replace the controls cover securing the five fixing screws.

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B. SERVICE AND MAINTENANCE

INSTRUCTIONS

B.1 SERVICING INSTRUCTIONS

Under normal working conditions, it is recommended that the Ultimate Products

Heater shou ld be serviced annually. In exceptionally dirty or dusty conditions

such as may occur in a foundry, more frequent servicing may be desirable.

Servicing work should be carried out by a qualified gas service engineer.

IMPORTANT:

1. Never rest anything, especially ladders, against the heater.

2. Turn off gas and electrical supplies before servicing or repair work is
started.

3. Unless otherwise instructed, reassemble parts in reverse order to the
following instructions.

B.2 ROUTINE SERVICE

A. FAN – Inspect the main fan propeller and remove any dust brushing with a

soft brush. Similarly remove any dust from the finger guard covering the
secondary (cooli ng) impeller and the mesh aperture in the motor cover. Ensure
that the impeller turns
freely and that there is not excessive play in the bearings.

B. EMITTER TUBE – Brush away any dust on the exterior of the emitter tube.
Inspect the emitter tube internally by removing the burner control box as directed

in “D” below. If there is any appreciable build up of dust or deposits, the tube
should be cleaned internally. The emitter tube may be cleaned by use of an
industrial vacuum cleaner with a long extension tube, which is passed down the
emitter tube.

Replace the burner/control assemblies engaging them fully on their tubes and
secure by tightening the screws ensuring that they are squarely positioned (i.e.
with the air inlet cover plate facing upwards).

C. REFLECTOR – The condition of the reflector should be noted and any
necessary cleaning performed. The reflectors can be simply removed for
cleaning by removing the reflector clamp screws securing them to the
suspension brackets and sliding them out of the suspension brackets. The
reflector can be cleaned with a soft cloth and detergent in water.

A mild non-abrasive metal polish may be used in cases of extreme discoloration.

D. REMOVAL OF BURNER/CONTROL ASSEMBLY – Remove the burner/
control assembly by disconnecting the gas and electrical supply (and fresh air
inlet duct if fitted). Slacken the burner fixing screws and draw the assembly off
the emitter tube.

2319 Laurelbrook Street, Raleigh, NC 27604 · (800) 542 -7221 · FAX [phone] · www.ultimate-products.com

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E. BURNER NER/ELECTRODE ASSEMBLY – Inspect the burner/electrode
assembly by removing the six screws securing the combustion chamber cover

plate to top of control box, taking care not to damage the sealing gasket.
Remove the burner head by unscrewing it from the injector taking care not to
drop it on the leads of the ignition electrodes. Replace the electrode assembly if it
is not in good condition. The assembly is removed by removing the screws which
attach it to the bracket on the front wall of the combustion chamber. The
assembly is then lifted out of the combustion chamber and the cable
disconnected. If the electrode assembly is in good order check the spark
electrode gap, this should be .125 inches ±.030 inches. Adjust the gap if
necessary by bending the ground rod. Ensure the electrical connections are
secure.

Inspect the injector and clean as necessary using a soft bristle brush. To remove
or replace the injector, with the burner head removed, unscrew the injector from
its carrier using a wrench, on the hexagon portion of its body. When replacing the
injector ensure that it is fully tightened in its carrier. (TIGHTEN SNUG -- DO NOT

OVERTIGHTEN)

Replace the burner head. Replace the combustion chamber top cover, renewing
the rubber sealing gasket if this is not in good condition.

Inspect the burner fresh air inlet duct if fitted and ensure that it is free of any
blockage or obstruction. Inspect the air inlet terminal and ensure this is not
liable to obstruction.

Recheck the heater by following the procedure for check out and start up,
taking care to check that the burner gas pressure is correctly set, and that the
vacuum switch and flame safeguard equipment function correctly.

F. AUXILIARY CONTROLS – Check that auxiliary controls such as room
thermostats, time switches, etc. function correctly and are set to operate at the

desired temperatures. Ensure that the user is aware of the functions of the
auxiliary controls and their correct settings. For most efficient operation of the
heating system the time switch, if fitted, should be set to switch on normally
between ¼ hour and 1 hour before commencement of occupancy of the building
depending on local conditions. The correct setting of the room thermostat can
only be determined by experience in cold weather when it should be set to shut
off the heaters when a comfortable level of warmth has been achieved. This
setting will normally be several degrees below that which would be required with
a convective heating system.

2319 Laurelbrook Street, Raleigh, NC 27604 · (800) 542 -7221 · FAX [phone] · www.ultimate-products.com