Roberts Gorden Blackheat BH15UT Release note

VVaaccuuuummAAssssiisstteedd
SSiinnggllee-bbuurrnneerraanndd
DDoouubblleeLLiinneeaarrSSyysstteemmss
IInnssttaallllaattiioonn&&SSeerrvviicciinngg
IInnssttrruuccttiioonnss
Roberts-Gordon products are designed, tested, manufactured and cer-
tified to meet the highest technical standards in the infrared heating
industry. To ensure safe operation it is essential that systems using
Roberts-Gordon products be installed and commissioned in accor-
dance with the manufacturer’s instructions and other applicable
codes and regulations. Failure to inspect and maintain equipment
properly constitutes a serious safety hazard.
Roberts-Gordon Europe, Ltd.
12 Cobham Road,
Ferndown Industrial Estate
Wimborne, Dorset BH21 7PS
Telephone: [phone]
Fax: [phone]
http://www.rg-inc.com
© Copyright 1999 Roberts-Gordon P/N 170101UK Rev.F 8/99
Installer
Please take the time to read and understand
these instructions prior to any installation. Installer
must give a copy of this manual to the owner.
Owner
Keep this manual in a safe place to provide your
serviceman with information should it become
necessary.
0063
BH15 ST
BH20 ST
BH25 ST
BH30 ST
BH35 ST
BH40 ST
BH45 ST
BH50 ST
BH2 15 ST
BH2 20 ST
BH2 25 ST
BH2 30 ST
BH2 35 ST
BH15 UT
BH20 UT
BH25 UT
BH30 UT
BH35 UT
BH40 UT
BH45 UT
BH50 UT
Blackheat®

TTaabblleeooffCCoonntteennttss
11..IInnttrroodduuccttiioonn............................................................11
Read this section carefully. Improper installation,
adjustment, operation or maintenance constitutes a
serious health and safety hazard.
22..SSppeecciiffiiccaattiioonnss..........................................................22
Material Specifications . . . . . . . . . . . . . . . . . . . . . . . . .2
Heater Specifications . . . . . . . . . . . . . . . . . . . . . . . . . .2
Venting Specifications . . . . . . . . . . . . . . . . . . . . . . . . .2
Suspension Specifications . . . . . . . . . . . . . . . . . . . . . .2
Controls Specifications . . . . . . . . . . . . . . . . . . . . . . . . .2
Clearances to Combustibles . . . . . . . . . . . . . . . . . . . . .3
Burner Specification . . . . . . . . . . . . . . . . . . . . . . . . . . .4
33..UU-TTuubbeeHHeeaatteerrIInnssttaallllaattiioonn......................................55
Health and Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Clearances To Combustibles . . . . . . . . . . . . . . . . . . . .5
Initial Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Heater Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Model BH15UT U-Tube Assembly . . . . . . . . . . . . . . . . .7
Model BH20UT/BH25UT U-Tube Assembly . . . . . . . . . .8
Model BH30UT/BH35UT/BH40UT U-Tube Assembly . .9
44..LLiinneeaarrHHeeaatteerrIInnssttaallllaattiioonn......................................1100
Health and Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Clearances To Combustibles . . . . . . . . . . . . . . . . . . .10
Initial Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Heater Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Model BH15ST Assembly . . . . . . . . . . . . . . . . . . . . . .12
Model BH20ST/BH25ST Assembly . . . . . . . . . . . . . . .13
Model BH30ST/BH35ST/BH40ST Assembly . . . . . . .14
Model BH45ST/BH50ST Assembly . . . . . . . . . . . . . . .15
55..DDoouubblleeLLiinneeaarrHHeeaatteerrIInnssttaallllaattiioonn..........................1166
Health and Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Related Documents . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Clearances To Combustibles . . . . . . . . . . . . . . . . . . .16
Initial Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Final Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Heater Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Typical Installation Layout . . . . . . . . . . . . . . . . . . . . .18
66..GGaassaannddEElleeccttrriiccSSuuppppllyy........................................1199
Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Electric Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
External Wiring Diagram (Single Burner) . . . . . . . . . .20
External Wiring Diagram (Double Linear Burner) . . . .20
Internal Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . .21
77..DDiisscchhaarrggeeooffCCoommbbuussttiioonnPPrroodduuccttss........................2222
General Requirements . . . . . . . . . . . . . . . . . . . . . . . .22
Flue Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Flueless Installation . . . . . . . . . . . . . . . . . . . . . . . . . .22
Ventilation Requirements . . . . . . . . . . . . . . . . . . . . . .22
Air Supply to Burner . . . . . . . . . . . . . . . . . . . . . . . . . .22
Air Supply Requirements . . . . . . . . . . . . . . . . . . . . . . .23
Common Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
88..OOppeerraattiinnggtthheeSSyysstteemm............................................2244
Detailed Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
User Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
99..SSeerrvviicciinnggIInnssttrruuccttiioonnss............................................2255
Annual Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Component Removal . . . . . . . . . . . . . . . . . . . . . . . . . .25
Troubleshooting Flow Chart . . . . . . . . . . . . . . . . . . . .28
1100..GGaassCCoonnvveerrssiioonnIInnssttrruuccttiioonnss..................................2266
Gas Conversion Kits . . . . . . . . . . . . . . . . . . . . . . . . . .26
Required Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Conversion Procedure . . . . . . . . . . . . . . . . . . . . . . . .26
Adjustment of Step-Flow Rate . . . . . . . . . . . . . . . . . .26
1111..RReeppllaacceemmeennttPPaarrttss................................................3300
1122..TThheeBBllaacckkhheeaattWWaarrrraannttyy........................................3322
1. Blackheat U-Tube and Linear Tube Configurations . . . .4
2. Bracket Suspension . . . . . . . . . . . . . . . . . . . . . . . . . . .5
3. Model BH15UT U-Tube Assembly . . . . . . . . . . . . . . . . .7
4. Model BH20UT/BH25UT U-Tube Assembly . . . . . . . . .8
5. Model BH30UT/BH35UT/ BH40UT U-Tube Assy . . . . . .9
6. Tube Clamp Package . . . . . . . . . . . . . . . . . . . . . . . . .10
7. Coupling Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . .10
8. Reflector Support Strap . . . . . . . . . . . . . . . . . . . . . . .11
9. Model BH15ST Assembly . . . . . . . . . . . . . . . . . . . . . .12
10. Model BH20ST/BH25ST Assembly . . . . . . . . . . . . . .13
11. Model BH30ST/BH35ST/ BH40ST Assembly . . . . . .14
12. Model BH40ST/BH50ST Assembly . . . . . . . . . . . . . .15
13. Typical Installation Layout (Dbl. Linear) . . . . . . . . . . .18
14. Typical Gas Line Installation . . . . . . . . . . . . . . . . . . .19
15. Typical External Wiring (Single Burner) . . . . . . . . . . .20
16. Typical External Wiring (Double Linear) . . . . . . . . . . .20
17. Burner Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . .21
18. Flue Connection Detail . . . . . . . . . . . . . . . . . . . . . . . .22
19. Fresh Air Intake Spigot . . . . . . . . . . . . . . . . . . . . . . . .23
20. Air Supply w/Flue Configurations . . . . . . . . . . . . . . . .23
21. TEKNIGAS Valve Spring Replacement . . . . . . . . . . . .27
22. SIT Valve Detail . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
23. TEKNIGAS Valve Detail . . . . . . . . . . . . . . . . . . . . . . . .27
24. Burner Cup Position . . . . . . . . . . . . . . . . . . . . . . . . . .27
25. Troubleshooting Flow Chart . . . . . . . . . . . . . . . . . . . .28
26. Burner Internal Components . . . . . . . . . . . . . . . . . . .30
LLiissttooffFFiigguurreess::

1
SSeeccttiioonn11..IInnttrroodduuccttiioonn
THAT THE FOLLOWING POINTS HAVE BEEN CAREFULLY CONSID-
ERED.
1.4.1 Highly elevated installations:
1. Do you have the proper equipment to install and
maintain the system in the proposed location?
2. Do you have suitable equipment to access the sys-
tem for maintenance after the system is installed?
3. Will the proposed location allow future access to
the system (i.e., will machinery be erected at a later
date that may make access to the system difficult
or impossible)?
NOTE: DDOONNOOTTlean ladders against a suspended
heater system. The BH unitary systems
employ a non-rigid attachment system that
will not support external apparatus.
4. Is the installed height within the parameters speci-
fied by the manufacturer?
1.4.2 Ventilation/Air Supply:
1. Will a flue be added to the system? If so, have you
checked the flue recommendations specified by
the manufacturer?
2. Is there an adequate supply of fresh air to support
combustion
1.4.3 Environment of the Facility:
1. Are there halogenated hydrocarbons* and/or other
combustible materials (i.e., cleaning agents, wood,
paper, rubber, etc.) within the area to be heated?- If
so, is there adequate exhaust ventilation and clear-
ances?
NOTE: In poorly vented, dusty areas, fresh outside
air should be provided to prevent premature
aging of the equipment.
In very dusty areas (i.e., woodworking facili-
ties) regular dusting of the tubes and reflec-
tors is essential as a fire preventative
measure.
1.4.4 Clearances to Combustibles:
1. Be sure that the clearances (as recommended by
the manufacturer) to halogenated hydrocarbons
and/or other combustible materials is observed.
2. Be sure that the manufacturer recommended
clearances between the heater system and vehi-
cles parked below are maintained.
3. Be sure that signs are posted in storage areas to
specify maximum stacking height below the heater
system.
4. If the radiant tubes must pass through the building
structure, be sure that adequate sleeving and fire
stop is installed to prevent scorching and/or risk of
* Halogenated Hydrocarbons are a family of chemical compounds characterized by the presence of halogen elements (fluorine, chlorine,
bromine, etc.). These compounds are frequently used in refrigerants, cleaning agents, solvents, etc. If these compounds enter the air
supply of the burner, the lifespan of the heater components will be greatly reduced. An outside air supply must be provided to the burn-
ers whenever the presence of these compounds is suspected. Warranty may be invalidated if the heater is exposed to halogenated hydro-
carbons.
11..11WWHHAATTIISSAABBLLAACCKKHHEEAATTUUNNIITTAARRYYHHEEAATTEERRSSYYSS-
TTEEMM??
The Blackheat BH is a gas-fired, vacuum-assisted, low-
intensity radiant heating system. The BH was devel-
oped by Blackheat in partnership with
Roberts-Gordon, who pioneered low-intensity heating
in 1962 with their revolutionary CoRayVac system.
Please note that the Blackheat BH is available in sev-
eral configurations. This manual describes the single
burner and double linear versions. The single burner
systems are available in both linear tube and U-tube
configurations. The double linear systems are com-
prised of two linear heaters with a common fan
assembly.
Optionally, HiLo models are available that incorporate
an extra solenoid valve to operate at a low (approx
80%) rate. Linked to a secondary thermostat, this pro-
vides a low rate at an intermediate setting below the
“off” stat. These models are described in manual
174900UK.
Multi-burner systems are covered in manual
172101UK. These systems manifold several heaters
to a single vacuum pump.
11..22AABBOOUUTTRRAADDIIAANNTTHHEEAATT
Radiant heat is the most effective way of providing
comfortable environmental conditions in large open
spaces. Radiant energy operates like light, travelling in
straight lines and can be directed to specific individu-
als and areas which require heating. Comfort levels
are created when the radiant energy is absorbed by
the floor, plant and machinery, and lower walls without
initially losing energy to the air space between.
The objects which have absorbed the radiant energy in
turn release heat to the air and act as low power radi-
ators. In this way, all useable energy is absorbed and
utilised in the occupied zone – the lower 2 metres –
not in the entire structure and roof space. Comfort
conditions are achieved using lower air temperatures
and as a result lower heat losses with a subsequently
lower fuel bill.
11..33UUSSEEOOFFAACCCCRREEDDIITTEEDDIINNSSTTAALLLLEERR
Installation of this equipment must only be carried out
by a registered installer. (In the United Kingdom,
installer must be CORGI registered.)
11..44GGEENNEERRAALLRREEQQUUIIRREEMMEENNTTSS
P LEASE NOTE THAT FAILURE TO COMPLY STRICTLY WITH THESE
INSTALLATION AND SERVICING INSTRUCTIONS MAY INVALIDATE THE
LIMITED WARRANTY SET OUT IN SECTION
11 OF THESE INSTRUC -
TIONS .
BEFORE PROCEEDING WITH THE INSTALLATION OF THE
BLACKHEAT UNITARY SYSTEM IT WILL BE HELPFUL TO CHECK

2
SSeeccttiioonn22..SSppeecciiffiiccaattiioonnss
22..22HHEEAATTEERRSSPPEECCIIFFIICCAATTIIOONNSS
2.2.1 Sequence Controller
Fully automatic direct spark 100% shut off
ignition flame rectification module
2.2.2 Electrical
Rating: 230V, 50 Hz, single phase, 1 amp
Connection: 3 pin moulded plug
2.2.3 Gas Supply
Connection: Rc1/2 (1/2" BSP int)
Natural G20:
Minimum - Inlet 15.00 mbar (6 in wg)
Maximum - Inlet 50.00 mbar (20 in wg)
Natural G25:
Minimum - Inlet 17.50 mbar (7 in wg)
Maximum - Inlet 50.00 mbar (20 in wg)
LP Gas (propane or butane):
Minimum - Inlet 32.50 mbar (13 in wg)
Maximum - Inlet 50.00 mbar (20 in wg)
22..11MMAATTEERRIIAALLSSPPEECCIIFFIICCAATTIIOONNSS
2.1.1 Combustion and Emitter Tubes
100 mm dia. 16 gauge heat treated aluminised
mild steel
2.1.2 Reflectors
NS3 H14 aluminium or 1.4016 2R stainless steel
(option)
22..33VVEENNTTIINNGGSSPPEECCIIFFIICCAATTIIOONNSS
2.3.1 Fans
BH-15, 20, 25, 30 Model: Airflow 45BTFR
BH-35, 40, 45 Model: Torin AUO75871
BH-35, 40, 45, 50 Model: Magnetek JF1G
BH2-15, 2-20 Model: Airflow 45BTFR
BH2-25, 2-30 Model: Torin AUO75871
BH2-25, 2-30, 2-35 Model: Magnetek JF1G
NNoottee::For Models BH-35, BH-40, BH-45, BH2-25
and BH2-30, the Magnetek fan is provided
as standard, and the Torin fan is available
as an alternate.
2.3.2 Flue
When fitted, the flue must be 100 mm , or greater in
diameter, and must conform to National Codes. The
flue must be self supporting. Inlet must be 100 mm
diameter.
22..44SSUUSSPPEENNSSIIOONNSSPPEECCIIFFIICCAATTIIOONNSS
Galvanised straight link welded chain.
22..55CCOONNTTRROOLLSSSSPPEECCIIFFIICCAATTIIOONNSS
Time switches, thermostats etc. can be wired into the
electrical supply. External controls supplied as an
optional extra.

3
UU-TTuubbeeHHeeaatteerrBH15UT BH20UT BH25UT BH30UT BH35UT BH40UT BH45UT BH50UT
Rate - Gross (kW) 15 kW 20 kW 25 kW 30 kW 35 kW 40 kW 45kW 50kW
Rate - Net (kW) 13.5 kW 18 kW 22.5 kW 27 kW 31.5 kW 36 kW 40.5kW 45kW
Heat Exchanger Length (mm) 3323 4843 4843 6363 6363 6363 7998 7998
Overall Heater Length (mm) 3406 5236 5236 6456 6456 6456 8328 8328
Weight (kg) 39 kg 54 kg 54 kg 65 kg 65 kg 66 kg 96kg 96kg
Heated Area (m2) 20-160 30-210 40-265 50-315 55-370 65-420 70-475 80-525
Min. Installed Ht (m) 3.5 m 3.5 m 4.0 m 4.7 m 5.0 m 5.0 m 5.0m 5.0m
Clearances to Combustibles
Above (mm) 100 100 100 100 100 100 100 100
Side (mm) 760 840 840 840 910 910 1140 1140
Below (mm) 1520 1600 1600 1600 1680 1680 1980 1980
DDoouubblleeLLiinneeaarrHHeeaatteerrBH2-15ST BH2-20ST BH2-25ST BH2-30ST BH2-35ST
Rate - Gross (kW) 30 kW 40 kW 50 kW 60 kW 70 kW
Rate - Net (kW) 27 kW 36 kW 45 kW 54 kW 63 kW
Heat Exchanger Length (mm) 12802 18898 18898 24994 24994
Overall Heater Length (mm) 13630 19738 19738 25030 25030
Weight (kg) 82 kg 110 kg 110 kg 136 kg 136 kg
Heated Area (m2) 50-315 65-420 80-525 100-630 110-740
Min. Installed Ht (m) 3.5 m 3.5 m 3.5 m 3.5 m 4.6 m
Clearances to Combustibles
Above (mm) 100 100 100 100 100
Side (mm) 760 840 840 840 910
Below (mm) 1520 1600 1600 1600 1680
LLiinneeaarrHHeeaatteerrBH15ST BH20ST BH25ST BH30ST BH35ST BH40ST BH45ST BH50ST
Rate - Gross (kW) 15 kW 20 kW 25 kW 30 kW 35 kW 40 kW 45 kW 50 kW
Rate - Net (kW) 13.5 kW 18 kW 22.5 kW 27 kW 31.5 kW 36 kW 40.5 kW 45 kW
Heat Exchanger Length (mm) 6096 9144 9144 12192 12192 12192 15240 15240
Overall Heater Length (mm) 6685 9739 9739 12785 12826 12826 15876 16120
Weight (kg) 41 kg 55 kg 55 kg 68 kg 68 kg 68 kg 81 kg 81 kg
Heated Area (m2) 20-160 30-210 40-265 50-315 55-370 65-420 70-475 80-525
Min. Installed Ht (m) 3.5 m 3.5 m 3.5 m 3.5 m 4.6 m 5.0 m 5.0 m 5.0 m
Clearances to Combustibles
Above (mm) 100 100 100 100 100 100 100 100
Side (mm) 760 840 840 840 910 910 1140 1140
Below (mm) 1520 1600 1600 1600 1680 1680 1980 1980
Table 1. U-Tube Heater Specifications
Table 2. Linear Heater Specifications
Table 3. Double Linear Heater Specifications

4
Swirler Fan Tube
PLAN VIEW
100 mm
254 mm
Heat Exchanger Length
Fan
U-Tube
Flanged Burner Tube
171 mm
273 mm
SIDE VIEW
PLAN VIEW
317 mm
100 mm
Heat Exchanger Length Fan
Swirler
END VIEW
Figure 1. Blackheat U-Tube and Linear Tube Configurations
22..66BBUURRNNEERRSSPPEECCIIFFIICCAATTIIOONN
BBuurrnneerrAAiirrPPllaattee
BH15 BH20 BH25 BH30 BH35 BH40 BH45 BH50
Identification Number: 14 15 12 6 7 9 10 11
GGaassCCoonnssuummppttiioonn**
BH15 BH20 BH25 BH30 BH35 BH40 BH45 BH50
Natural G20 (m3/h) 1.43 1.91 2.38 2.86 3.34 3.81 4.29 4.77
Natural G25 (m3/h) 1.66 2.22 2.77 3.32 3.88 4.43 4.99 5.54
Propane (m3/h) 0.56 0.75 0.94 1.13 1.32 1.51 1.69 1.88
Butane (m3/h) 0.43 0.57 0.72 0.86 1.00 1.15 1.29 1.43
GGoovveerrnnoorrPPrreessssuurree
BH15 BH20 BH25 BH30 BH35 BH40 BH45 BH50
Butane (mbar) 21.4 19.7 19.2 17.4 18.2 17.9 16.9 18.4
Butane (in wg) 8.6 7.9 7.7 7.0 7.3 7.2 6.8 7.4
Natural G20: 8.7 mbar 3.5 in wg
Natural G25: 11.1 mbar 4.5 in wg
Natural G20 Hi/Lo : 8.7/5.0 mbar 3.5/2.0 in wg
Natural G25 Hi/Lo : 11.1/6.5 mbar 4.5/2.6 in wg
Propane: 27 mbar 10.5 in wg
JJeettNNuummbbeerr
BH15 BH20 BH25 BH30 BH35 BH40 BH45 BH50
Natural G20 & G25
3.4 mm 3.8 mm 4.3 mm 4.7 mm 4.9 mm 5.4 mm 5.8 mm 6.0 mm
Propane/Butane
2.1 mm 2.35 mm 2.7 mm 3.0 mm 3.2 mm 3.4 mm 3.6 mm 3.75 mm
Pressure Couple
1.95 mm 2.25 mm 2.5 mm 2.7 mm 2.9 mm 3.2 mm 3.25 mm 3.4 mm
(*) Based on Gross Caloric Value

5
SSeeccttiioonn33..UU-TTuubbeeHHeeaatteerrIInnssttaallllaattiioonn
3.1 HEALTH AND SAFETY
Blackheat cannot be responsible for ensuring that all
appropriate safety measures are undertaken prior to
installation; this is entirely the responsibility of the
installer. If Blackheat installs the appliance, it is
essential that the contractor, the sub-contractor, or
the owner indicate the presence of combustible mate-
rials or halogenated hydrocarbons anywhere in the
premises.
3.2 RELATED DOCUMENTS
Notwithstanding their limited scope, the appliance
should be installed in accordance with relevant
National Codes.
33..33CCLLEEAARRAANNCCEESSTTOOCCOOMMBBUUSSTTIIBBLLEESS
Before proceeding with installation, ensure that
proper clearances to combustible materials will be
observed in the final installed position of the heater.
Clearance distances may be found in Section 2 of
these instructions.
33..44IINNIITTIIAALLAASSSSEEMMBBLLYY
3.4.1 Prepare a work area corresponding to the size of
heater selected. The area should be clear and free of
debris. The manufacturers approved layout drawing
should be referred to so that the work area is conve-
nient for the final system position.
3.4.2 Layout the appropriate Figure (3, 4, or 5 depending on
heater model) and keep it at a convenient place for
frequent reference. Pull out every part from the pack-
age and lay them out roughly at the position shown in
the assembly drawings. For BH35UT and BH40UT
make sure that the end of the fan tube with the swirler
points away from the U-bend. Keep the bolts and
screws at a convenient place for later usage.
3.4.3 With the suspension holes uppermost, slide the first
and intermediate brackets onto the fan and burner
tubes. For Model BH15, there is no intermediate
bracket. In the following assembly procedures, please
pay attention to this point.
3.4.4 Use two bolts to connect the U-bend and end bracket
together with the suspension holes uppermost. Insert
the plain ends of the burner tube and fan tube into the
two legs of the U-bend, and secure them with four
bolts.
3.4.5 Place intermediate bracket over the ends of the
tubes. Slide bracket onto tubes approximately 500
mm.
3.4.6 Join the burner tube and the remaining plain end tube
using the couplings and bolts provided. See section
4.4.5 for details.
3.4.7 Place the reflectors over the brackets as shown in the
assembly diagrams, and secure them using six screws
at each end. Seal the seam on top of the reflectors
using U-clips at least every 300 mm.
NOTE: Remove PVC coat from stainless steel reflec-
tors.
3.4.8 Insert the quick-links into the holes at the top edges of
the end, intermediate and first brackets.
3.4.9 Prepare the hanging chains at the position where the
heater will be located. Suspend the heating system as
recommended below. Use the center holes of the end
and first bracket to lift the heating system into posi-
tion. Chains used should have 100 kg minimum
breaking load and preferably should be galvanised
finish. Figure 2 shows two suspension methods.
Method A is recommended because it provides a
semi-rigid suspension. Method B is acceptable.
Figure 2. Bracket Suspension
3.4.10 Never lift the assembled heater by passing ropes
around the reflector which would cause severe dam-
age to the reflectors.
3.4.11 When angle mounting the heater, the burner tube
must be the tube nearest the floor and the fan tube is
always furthest from the wall (when suspended adja-
cent to a wall). It is recommended wherever possible
that the heater is suspended from above from
unequal length chains to effect the necessary angle
(maximum 20° from horizontal). Always allow extra
lengths of chain so that adjustment of angle can be
made to provide the best heat distribution for your
customer.
33..55FFIINNAALLAASSSSEEMMBBLLYY
3.5.1 Place the gasket on the flange of the burner tube.
Carefully insert the flanged end into the burner box.
Secure the burner on the burner tube using the four
mounting bolts and washers. Use a spanner to tighten
the bolts evenly.
3.5.2 Place the fan assembly onto the end of the last fan
tube. Slide the fan assembly up to its stop. Tighten
the pinch screw on the assembly making sure that the
fan outlet is positioned as required.
Recommended
Suspension
Acceptable
Suspension
AB

6
Table 4. Blackheat U-Tube Heater Parts List
Part No. Description BH15UT BH20UT BH25UT BH30UT BH35UT BH40UT BH45UT BH50UT
1 Burner Assembly with Gasket 1 1 1 1 1 1 1 1
2 S7340K Fan Assembly (includes flange) - Airflow 45 BTFR 1 1 1 1 - - - -
3 S7104K Fan Assembly (includes flange) - Torin - - - - 1 1 1 -
4 S7320K Fan Assembly (includes flange)- Magnetek - - - - - - - 1
5 03051100 Burner Tube, 100 mm x 3048 mm 1 1 1 1 1 1 1 1
6 91409408 Heat Treated Aluminised Tube, 100 mm x 3048 mm - - - 2 2 2 2 2
7 S5127W Fan Tube, 100 mm x 3048 mm with 3048 mm Swirler - 1 1 1 1 1 1 1
8 S5140W Heat Treated Aluminised Tube, 1702 mm - 2 2 - - - 2 2
9 S5134W Fan Tube, 100 mm x 3048 mm with 2134 mm Swirler 1 - - - - - - -
10 S7302K Reflector Kit, 2439 mm, 4 pcs, Alum. - 1 1 - - - - -
11 S7301K Reflector Kit, 3048 mm, 2 pcs, Alum. 1 - - - - - - -
12 S7303K Reflector Kit, 3048 mm, 4 pcs, Alum. - - - 1 1 1 - -
13 S7318K Reflector Kit, 2430 mm, 4 pcs, 3048mm Long, 2pcs,Alum - - - - - - 1 1
14 S7338K Reflector Kit, 2439 mm, 4 pcs, Stls Steel (optional) - 1 1 - - - - -
15 S7337K Reflector Kit, 3048 mm, 2 pcs, Stls Steel (optional) 1 - - - - - - -
16 S7339K Reflector Kit, 3048 mm, 4 pcs, Stls Steel (optional) - - - 1 1 1 - -
17 S7440K Reflector Kit, 2430mm, 4 pcs, 3048mm Long 2pcs Stls Steel (optl) - - - - - - 1 1
18 07290000 U-Bend Assembly 1 1 1 1 1 1 1 1
19 C0176B Quick Link 6 9 9 9 9 9 12 12
20 07281000 First Bracket 1 1 1 1 1 1 1 1
21 07282000 End Bracket 1 1 1 1 1 1 1 1
22 07283000 Intermediate Bracket - 1 1 1 1 1 2 2
23 91107720 U-Clip Package (20 per package) 1 1 1 1 1 1 2 2
24 S7311K Screw Kit 1 1 1 1 1 1 - -
25 S7317K Screw Kit - - - - - - 1 1
26 S7401K Support Bracket Package - - - 1 1 1 - -
27 S7402K Support Bracket Package - - - - - - 1 1
28 01329600 Standard Coupling Assembly - 2 2 2 2 2 4 4
29 01329700 Coupling Lock - 2 2 2 2 2 4 4
30 S7402K Support Bracket Package 1 - - - - - 1 1

7
(1) Fan Assembly
(1) Fan Tube 100 mm x 3048 mm
with Swirler
(1) Burner Tube
100 mm x 3048 mm
(1) Burner Assembly
(1) Reflector Kit
(2) 3048 mm long pieces
U-Clips (package of 20)
(4) Quick Links
(1) End Bracket
(1) First Bracket
(1) U-Bend Assembly
(1) Gasket
(1) Swirler
(included in heating tube)
(12) Sheet Metal Screws
Reflector Support Bracket
(1) Nut
(1) U-Bolt
Figure 3. Model BH15UT U-Tube Assembly
c
a
b
a = 534 mm b = 356 mm c = 3050 mm

8
(1) Fan Assembly
(1) Burner Tube
100 mm x 3048 mm
(1) Burner Assembly
(1) Reflector Kit
(4) 2439 mm long pieces
(1) Swirler
(included in fan tube)
U-Clips (package of 20)
(6) Quick Links
(1) End Bracket
(1) Intermediate Bracket
(1) First Bracket
(1) U-Bend Assembly
(1) Gasket
(1) Fan Tube
100 mm x 3048 mm
with Swirler
(24) Sheet Metal Screws
(2) Stainless Steel Coupling
(2) Aluminised Tube
100 mm x 1829 mm
Figure 4. Model BH20UT/BH25UT U-Tube Assembly
c
a
b d
a = 534 mm b = 356 mm c = 2440 mm d = 2440 mm

9
(1) Fan Assembly
(1) Fan Tube
100 mm x 3048 mm
with Swirler
(1) Burner Assembly
(1) Reflector Kit
(4) 3048 mm long pieces
U-Clips (package of 20)
(6) Quick Links
(1) End Bracket
(1) Intermediate Bracket
(1) First Bracket
(1) U-Bend Assembly
Gasket
(1) Swirler
(included in fan tube)
(24) Sheet Metal Screws
(1) U-Bolt
Reflector Support Bracket
(Typical 2 Places)
(1) Nut
(2) Stainless Steel Coupling
(1) Burner Tube
100 mm x 3048 mm
(2) Aluminised Tube
100 mm x 3048 mm
Figure 5. Model BH30UT/BH35UT/BH40UT U-Tube Assembly
c
a
b d
a = 534 mm b = 356 mm c = 3050 mm d = 3050 mm

10
(1) Fan Assembly
(1) Fan Tube
100 mm x 3048 mm
with Swirler
(1) Burner Assembly
(6) Quick Links
(1) First Bracket
(1) U-Bend Assembly
Gasket
(1) Swirler
(included in fan tube)
(1) U-Bolt
Reflector Support Bracket
(Typical 3 Places)
(2) Stainless Steel Coupling
(1) Burner Tube
100 mm x 3048 mm
(2) Aluminised Tube
100 mm x 3048mm
(1) Nut
(1) Intermediate Bracket
(1) Intermediate Bracket
(2) Aluminised Tube
100 mm x 1702 mm
(2) Stainless Steel Coupling
(1) Reflector Kit
(2) 3048 mm long pieces
U-Clips (package of 20)
(24) Sheet Metal Screws
(1) Reflector Kit
(4) 2439 mm long pieces
(1) End Bracket
Figure 6. Model BH45UT/BH50UT U-Tube Assembly

11
SSeeccttiioonn44..LLiinneeaarrHHeeaatteerrIInnssttaallllaattiioonn
4.1 HEALTH AND SAFETY
Blackheat cannot be responsible for ensuring that all
appropriate safety measures are undertaken prior to
installation; this is entirely the responsibility of the
installer. If manufacturer installs the appliance, it is
essential that the contractor, the sub-contractor, or
the owner indicate the presence of combustible mate-
rials or halogenated hydrocarbons anywhere in the
premises.
4.2 RELATED DOCUMENTS
Notwithstanding their limited scope, the appliance
should be installed in accordance with relevant
National Codes.
4.3 CLEARANCES TO COMBUSTIBLES
Before proceeding with installation, ensure that
proper clearances to combustible materials will be
observed in the final installed position of the heater.
Clearance distances may be found in Section 2 of
these instructions.
44..44IINNIITTIIAALLAASSSSEEMMBBLLYY
4.4.1 Prepare a work area corresponding to the size of
heater selected. The area should be clear and free of
debris. The manufacturers approved layout drawing
should be referred to so that the work area is conve-
nient for the final system position.
4.4.2 Layout the appropriate Figure (9, 10, 11, or 12,
depending on heater model) and keep it at a conve-
nient place for frequent reference. Pull out every part
from the package and lay them out roughly at the
position shown in the assembly drawing. Keep the
bolts and screws at a convenient place for later
usage.
4.4.3 Prepare the hanging chains at the position where the
heater will be located. Chains used should have 100
kg minimum breaking load and preferably should be
galvanised finish. Assemble the two halves of the tube
clamp package using the hex carriage bolt, hex nut
and flat washer. Attach the clamp to the tube and
reflector hanger, and slide the hanger into place on
the burner tube (see Figure 6).
4.4.4 The hanger must be located within 150 mm of the
flange. Slide the next tube and reflector hanger onto
the end of the burner tube. Making sure that the sus-
pension hooks of the hangers are uppermost, lift the
burner tube into the position required. Suspend the
burner tube by connecting the tube and reflector
hangers to chains using the quick links provided.
4.4.5 Slide another tube and reflector hanger onto the next
tube and locate it according to the appropriate Figure.
Lift the tube into its position and connect it with the
burner tube using a stainless steel coupling. Repeat
this procedure to suspend the remaining tube(s) and
connect them to the heater one by one.
4.4.6 For details of the coupling connection, see the follow-
ing diagram:
Figure 8. Coupling Assembly
To assemble the coupling, hook the free end of the
coupling sleeve into the lanced clip. Place the wide
end of the tapered slide bar on the coupling so that it
moves toward the lanced clip. Insert the two tube ends
into the coupling. Be sure the tube ends are in line
and are flush against the stop pins inside the cou-
pling.
Hammer-drive the slide bar until the coupling is
secured snugly to the tubes. Overdriving the slide bar
will distort the coupling or slide bar lip and will
decrease the holding capability of the coupling.
Impact Block
Tighten
Loosen
When assembling coupling, the wide end of
the slide bar moves toward the lanced clip
Orient coupling so that the impact
block is above tube centerline.
C
L
Stainless Steel
Coupling
Slide Bar
Lanced Clip
Position tube and
reflector hanger no
more than 10 cm (4")
away from the burner
assembly.
Flat washer
and hex nut
Tube clamp
Carriage bolt
Transition tube
Burner assembly
Bow Shackle
Figure 7. General Arrangement Using
Tube Clamp Package

12
Coupling should be tight when the slide bar is ±50
mm from the end of the coupling.
4.4.7 Place a reflector over the flanged burner tube and
slide it inside the first tube and reflector hanger. Slide
the next reflector under the first reflector. Overlap the
reflectors using the distance specified in the assem-
bly drawings. Secure the two reflectors in place using
the reflector support straps. Assemble the reflector
support strap according to the following figure:
NOTE: Remove PVC coat from stainless steel reflec-
tors.
Figure 9. Reflector Support Package
4.4.8 Attach the remaining reflectors to the heater using the
same method. Be sure to alternate the overlap of the
reflectors as shown in the assembly drawings.
Reflector
Reflector Support Strap
Wire Form
Reflector Support Package
includes Support Strap, Wire Form, and (2) Screws
For slip joint, loosen screws approx. 2 mm
Heating Tube
Sheet Metal
Screw
Starting at the first reflector support, and alternating
every other support down the length of the heater, the
screws should be loosened 2 mm to allow for expan-
sion of the heating tubes during operation.
4.4.9 After assembling the reflectors, attach the reflector
end caps to the open ends of the reflectors. Punch out
the center section of the end cap, and attach the end
cap to the reflector using at least 6 of the U-clips pro-
vided.
44..55FFIINNAALLAASSSSEEMMBBLLYY
4.5.1 Place the gasket on the flange of the burner tube.
Carefully insert the flanged end into the burner box.
Secure the burner on the burner tube using the four
mounting bolts and washers. Use a spanner to tighten
the bolts evenly.
4.5.2 Place the fan assembly onto the end of the last fan
tube. Slide the fan assembly up to its stop. Tighten the
pinch screw on the assembly making sure that the fan
outlet is positioned as required.
4.5.3 Carefully adjust system pitch at each support to level
the heater. Pitch down (away from burner) 6 mm in
1000 mm.
Table 5. Blackheat Linear Heater Parts List
Part No. Description BH15 BH20 BH25 BH30 BH35 BH40 BH45 BH50
1 Burner Assembly with Gasket 11111111
2 S7353K Fan Assembly (includes flange) - Airflow 45 BTFR 1111 ----
S7103K Fan Assembly (includes flange) - Torin ----111-
S7105K Fan Assembly (includes flange) - Magnetek -------1
3 03051100 Burner Tube, 100 mm x 3048 mm 11111111
4 S5127W Fan Tube, 100 mm x 3048 mm, with 3048 mm Swirler - 1111111
5 91409408 Heat Treated Aluminised Tube, 100 mm x 3048 mm - 1122233
6 S5134W Fan Tube, 100 mm x 3048 mm, with 2134 mm Swirler 1 -------
7 02750303 Aluminium Reflector, 2439 mm 34466677
8 S5163W Stainless Steel Reflector, 2439 mm 34466677
9 03090100 Tube and Reflector Hanger 34455566
10 01318901 Tube Clamp Package 11111111
11 01329600 Standard Coupling Assembly 12233344
12 01329700 Coupling Lock 12233344
13 03050000 Reflector Support Strap 23355566
14 02750800 Reflector End Cap 22222222
15 E0007576 Bow Shackle 34455566
16 91107720 U-Clip Package 11111111
17 91908004 Wire Form 23355566

13
(1) Burner Tube, 100 mm x 3048 mm
(1) Burner Assembly
(3) Reflectors 2439 mm long
(reflectors overlap approx. 700 mm)
Swirler
(included in Fan Tube)
(4) U-Clips
Bow Shackle (Typ.)
Gasket
(1) Tube Clamp Package
(2) Reflector End Caps
(2) Reflector Support Straps
(3) Tube and Reflector Hangers
loose screws
tight screws
(4) U-Clips
(1) Fan Assembly
(1) Stainless Steel Coupling
(1) Fan Tube, 100 mm x 3048 mm,
with Swirler
Figure 10. Model BH15ST Assembly
a = reflector width = 365 mm b = end cap to burner/fan = 150 mm c = end cap to hanger = 50 mm d = distance between hangers = 2848 mm e = burner length = 273 mm f = burner width = 171 mm
ebc
d
a
d
cb
f

14
(1) Fan Assembly
(1) Fan Tube, 100 mm x 3048 mm
with Swirler
(2) Stainless Steel Coupling
(1) Burner Tube, 100 mm x 3048 mm
(1) Burner Assembly
(4) Reflectors 2439 mm long
(reflectors overlap approx. 250 mm)
Swirler
(included in Fan Tube)
U-Clips (package of 20)
(4) Bow Shackles
Gasket
(1) Tube Clamp Package
(2) Reflector End Caps
(3) Reflector Support Straps
(4) Tube and Reflector Hangers
loose screws
tight screws
loose screws
(1) Aluminised Tube, 100 mm x 3048 mm
Figure 11. Model BH20ST and BH25ST Assembly
a = reflector width = 365 mm b = end cap to burner/fan = 150 mm c = end cap to hanger = 50 mm d = distance between hangers = 2915 mm e = burner length = 273 mm f = burner width = 171 mm
ebc
d
a
d
cb d
f

15
(1) Fan Tube, 100 mm x 3048 mm
with Swirler
(3) Stainless Steel Coupling
(1) Burner Tube, 100 mm x 3048 mm
(1) Burner Assembly
(6) Reflectors 2439 mm long
(reflectors overlap approx. 530 mm)
Swirler
(included in Fan Tube)
Bow Shackle (Typ.)
Gasket
(1) Tube Clamp Package
(2) Reflector End Caps
(5) Reflector Support Straps
(4) Tube and Reflector Hangers
loose screws
tight screws
loose screws
loose screws
tight screws
(4) U-Clips
(4) U-Clips
Damper
(2) Aluminised Tube, 100 mm x 3048 mm
Figure 12. Model BH30ST, BH35ST and BH40ST Assembly
a = reflector width = 365 mm b = end cap to burner/fan = 150 mm c = end cap to hanger = 50 mm d = distance between hangers = 2948 mm e = burner length = 273 mm f = burner width = 171 mm
ebc
d
a
d
cb dd
f

16
(1) Fan Assembly
(1) Fan Tube, 100 mm x 3048 mm
with Swirler
(4) Stainless Steel Couplings
(3) Aluminised Tube, 100 mm x 3048 mm
(1) Burner Assembly
(7) Reflectors 2439 mm long
(reflectors overlap approximately 330 mm)
Swirler
(included in Fan Tube)
U-Clips (package of 20)
(6) Bow Shackle
Gasket
(1) Tube Clamp Package
(2) Reflector End Caps
(6) Reflector Support Straps
(6) Tube and Reflector Hangers
loose screws
tight screws
loose screws
loose screws
tight screws
tight screws
(1) Burner Tube, 100 mm x 3048 mm
Figure 13 Model BH45ST and BH50ST Assembly
a = reflector width = 365 mm b = end cap to burner/fan = 150 mm c = end cap to hanger = 50 mm d = distance between hangers = 2968 mm e = burner length = 273 mm f = burner width = 171 mm
d d
f
ebc
d
a
d
cb d

17
5.1 HEALTH AND SAFETY
Blackheat cannot be responsible for ensuring that all
appropriate safety measures are undertaken prior to
installation; this is entirely the responsibility of the
installer. If the manufacturer installs the appliance, it
is essential that the contractor, the sub-contractor, or
the owner indicate the presence of combustible mate-
rials or halogenated hydrocarbons anywhere in the
premises.
5.2 RELATED DOCUMENTS
Notwithstanding their limited scope, the appliance
should be installed in accordance with relevant
National Codes.
5.3 CLEARANCES TO COMBUSTIBLES
Before proceeding with installation, ensure that
proper clearances to combustible materials will be
observed in the final installed position of the heater.
Clearance distances may be found in Section 2 of
these instructions.
55..44IINNIITTIIAALLAASSSSEEMMBBLLYY
5.4.1 Prepare a work area corresponding to the size of
heater selected. The area should be clear and free of
debris. The manufacturers approved layout drawing
should be referred to so that the work area is conve-
nient for the final system position.
5.4.2 Establish both the centre point for the unit, and the
centre line of the heater run within the area to be
heated. Along the established centre line of the heat-
ing run, layout two of the appropriate heater configura-
tions (Figure 9, 10 or 11). The burner assemblies
should be at opposite ends of the heater run and
should be configured as shown in Figure 13.
5.4.3 At a point directly above the established centre of the
heater system, install a suspension chain for the fan
assembly. Moving outward from this point, and along
the established centre line, establish the remainder of
the chain suspension locations.
5.4.4 Suspend the tube and reflector hangers for the fan
tube, and raise the fan tubes into position.
5.4.5 Assemble the two halves of the tube clamp package
using the hex carriage bolt, hex nut and flat washer.
Attach the clamp to the tube and reflector hanger, and
slide the hanger into place on the burner tube (see
Figure 6).
5.4.6 The hanger must be located within 150 mm of the
flange. Slide the next tube and reflector hanger onto
the end of the burner tube. Making sure that the sus-
pension hooks of the hangers are uppermost, lift the
burner tube into the position required. Suspend the
burner tube by connecting the tube and reflector
hangers to chains using the bow shackles provided.
Repeat procedure for the burner tube at the other end.
5.4.7 Connect the burner and fan tubes using the stainless
steel couplings. Raise the centre tee into position
SSeeccttiioonn55..DDoouubblleeLLiinneeaarrHHeeaatteerrIInnssttaallllaattiioonn
between the end of the fan tubes and secure using
the damper couplings provided.
5.4.8 Slide another tube and reflector hanger onto the next
tube and locate it according to the appropriate Figure.
Lift the tube into its position and connect it with the
burner tube using a stainless steel coupling. Repeat
this procedure to suspend the remaining tube(s) and
connect them to the heater one by one. For details of
the coupling connection, see Figure 7.
5.4.9 To assemble the coupling, hook the free end of the
coupling sleeve into the lanced clip. Place the wide
end of the tapered slide bar on the coupling so that it
moves toward the lanced clip. Insert the two tube
ends into the coupling. Be sure the tube ends are in
line and are flush against the stop pins inside the cou-
pling.
Hammer-drive the slide bar until the coupling is
secured snugly to the tubes. Overdriving the slide bar
will distort the coupling or slide bar lip and will
decrease the holding capability of the coupling.
Coupling should be tight when the slide bar is ±50
mm from the end of the coupling.
5.4.10 Place a reflector over the flanged burner tube and
slide it inside the first tube and reflector hanger. Slide
the next reflector under the first reflector. Overlap the
reflectors using the distance specified in the assem-
bly drawings. Secure the two reflectors in place using
the reflector support straps. Assemble the reflector
support strap (see Figure 8).
NOTE: Remove PVC coat from stainless steel reflec-
tors.
5.4.11 Attach the remaining reflectors to the heater using the
same method. Be sure to alternate the overlap of the
reflectors as shown in the assembly drawings.
Starting at the first reflector support, and alternating
every other support down the length of the heater, the
screws should be loosened 2 mm to allow for expan-
sion of the heating tubes during operation.
5.4.12 After assembling the reflectors, attach the reflector
end caps to the open ends of the reflectors. Punch out
the center section of the end cap, and attach the end
cap to the reflector using at least 6 of the U-clips pro-
vided.
55..55FFIINNAALLAASSSSEEMMBBLLYY
5.5.1 Place the gasket on the flange of the burner tube.
Carefully insert the flanged end into the burner box.
Secure the burner on the burner tube using the four
mounting bolts and washers. Use a spanner to tighten
the bolts evenly.
5.5.2 Place the fan assembly onto the branch of the tee;
slide the fan assembly up to its stop. Tighten the pinch
screw on the assembly making sure that the fan out-
let is positioned as required. Attach hanging chain to
the flange.

18
Table 6. Blackheat Double Linear Heater Parts List
Part No. Description BH2-15ST BH2-20ST BH2-25ST BH2-30ST BH2-35ST
1 Burner Assembly with Gasket 2 2 2 2 2
2 S7353K Fan Assembly (including flange) - Airflow 1 1 - - -
S7105K Fan Assembly (including flange) - Magnatek - - 1 1 1
3 03051100 Burner Tube, 100 mm x 3048 mm 2 2 2 2 2
4 91409408 Heat Treated Aluminised Tube, 100 mm x 3048 mm - 2 2 4 4
5 S5127W Fan Tube, 100 mm x 3048 mm, with 3048 mm Swirler - 2 2 2 2
6 S5134W Fan Tube, 100 mm x 3048 mm, with 2134 mm Swirler 2 - - - -
7 E0009170 Tee, 100 mm x 100 mm x 100 mm 1 1 1 1 1
8 02750303 Aluminium Reflector, 2439 mm 6 8 8 12 12
9 S5163W Stainless Steel Reflector, 2439 mm (optional) 6 8 8 12 12
10 03090100 Tube and Reflector Hanger 6 8 8 10 10
11 01318901 Tube Clamp Package 2 2 2 2 2
12 01329600 Standard Coupling Assembly 4 6 6 8 8
13 01329700 Coupling Lock 4 6 6 8 8
14 03050000 Reflector Support Strap 4 6 6 10 10
15 02750800 Reflector End Cap 4 4 4 4 4
16 E0007576 Bow Shackle 6 8 8 10 10
17 91107720 U-Clip Package 2 2 2 2 2
18 91908004 Wire Form 4 6 6 10 10