BASO BGH2UNCNTRLHT-01 User Manual

Installation Instructions BGH
Issue Date October 4, 2010

BGH2UNCNTRLHT-01 Universal

Hot Surface Ignition Control

Application

The BASO Gas Products BGH2UNCNTRLHT-01
Universal Series Hot Surface Ignition (HSI) control is
microprocessor based with timed ignition and suited
for replacement or new applications. Applications for
hot surface ignition modules include agricultural
equipment, space heaters, furnaces,
residential/commercial boilers, water heaters, pool
and spa heaters, and a variety of other commercial
cooking equipment.

This control includes a 5 position DIP switch allowing
up to 32 programmable pre-defined timing selections
to retrofit other Hot Surface Ignitions with flame
sensing rectification, such as: Johnson Controls,
Honeywell, White Rodgers, Fenwal, and
Robertshaw.

The BGH2UNCNTRLHT-01 works with single-rod or
dual-rod sensing to prove a flame. The control has a
continuous and precise monitoring of the HSI
element, wiring, and gas valve, shutting down in the
event of a failure. For a complete listing of

specifications, refer to the Technical Specifications

section.

Installation

IMPORTANT: Only qualified personnel

should install or service BASO Gas Products®.
These instructions are a guide for such personnel.

Carefully follow all instructions for the appliance.

IMPORTANT: Make all gas installations in

accordance with applicable local, national, and

regional regulations.

!

WARNING: Risk of Explosion or Fire.

Do not install the control in an area that is exposed
to water (for example, dripping, spraying, rain). Do
not use the control if it has been exposed to water.
Exposure to water may cause malfunction and can
lead to an explosion or fire and may result in
severe personal injury or death.

© 2010 BASO Gas Products 1

Part No. BASO-INS-BGH, Rev. - www.baso.com

Table 1: BGH2UNCNTRLHT-01 Universal Cross Reference

Switch

Positions

ON

Switch

Positions

OFF

none 1,2,3,4,5

5 1,2,3,4

4 1,2,3,5

4,5 1,2,3

3 1,2,4,5

3,5 1,2,4,

White-Rodgers Robershaw Honeywell Fenwal

50E47-150 to 159
50E47-350 to 359

50E47-140 to 149
50E47-340 to 349

50F47-150 to 159
50F47-350 to 359

50F47-140 to 149
50F47-340 to 349

50E47-170 to 179
50E47-370 to 379
50F47-170 to 179
50F47-370 to 379

50E47-160 to 169
50E47-360 to 369
50F47-160 to 169
50F47-360 to 369

HS780-34NL-306A(a,c)
HS780-34NL-308A(a,c)

HS780-34NL-312A(c,d)
HS780-34NR-306A(a,c)
HS780-34NR-308A(a,c)
HS780-34NR-312A(c,d)

HS780-17NR-306A(a,b)
HS780-17NR-308A(a,b)
HS780-17NL-308A(a,b)

― ― ―

― ― ―

― ― ―

― ―

05-356265-153(d,g)
05-356265-154(d,g)

S89H1011(a,c)
S89G1013(a,c)
S89G1021(c,d)

―
S89H1029(c,d)
S89G1047(a,c)

05-356265-053(c,d)

―

05-356265-054(c,d)
05-356265-055(c,d)

S8910U

S890H1010(a,f)

3,4 1,2,5 ― ―

S890G1011(a,f)
S890H1028(d,f)

―

S890G1029(d,f)
S890G1037(a,f)

3,4,5 1,2 ― ― ― ―

Note: For timing parameters see Table 2.

(a) The BGH2UNCNTRLHT-01 Universal and the referenced control ignition trial times are different; however, the

ignition trial time is within the design tolerance of the referenced control.
(b) The BGH2UNCNTRLHT-01 Universal between trial purge time is longer than that of the referenced control.
(c) The BGH2UNCNTRLHT-01 Universal between trial purge and igniter warmup times is longer than those of the

referenced control.
(d) The BGH2UNCNTRLHT-01 Universal ignition trial time is shorter than that of the referenced control. Be sure

to observe appliance operation to assure reliable performance.
(e) The BGH2UNCNTRLHT-01 Universal pre-purge time is longer than that of the referenced control
(f) The BGH2UNCNTRLHT-01 Universal pre-purge and between trial purge times are longer than those of the

referenced control.
(g) The BGH2UNCNTRLHT-01 Universal pre-purge, between trial purge, and igniter warmup times are longer

than those of the referenced control.

2 BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions

Table 1: BGH2UNCNTRLHT-01 Universal Cross Reference

Switch

Positions

ON

Switch

Positions

OFF

2 1,3,4,5

2,5 1,3,4

2,4 1,3,5

2,4,5 1,3

2,3 1,4,5

2,3,5 1,4

White-Rodgers Robershaw Honeywell Fenwal

50E47-130 to 139

50E47-330 t 339

50E47-120 to 129
50E47-320 to 329

50F47-130 to 139
50F47-330 to 339

50F47-120 to 129
50F47-320 to 329

― ― ―

― ― ―

― ― ―

05-356225-153(d,g)

― ―

05-356225-154(d,g)
05-356225-155(d,g)

50E47-110 to 119
50E47-310 to 319
50F47-110 to 119

― ― ―

50F47-310 to 319

50E47-101 to 109
50E47-301 to 309
50F47-101 to 109
50F47-301 to 309

HS780-17NL-108A(a) ―

05-356225-053(c,d)
05-356225-054(c,d)
05-356225-055(c,d)

8910U

2,3,4 1,5 ― ―

S890D1006(a,e)

―

S890C1007(a,e)

S89D1002(a)

2,3,4,5 1 ― HS780-34NL-108A(a)

S89C1004(a)

S89J1008(a)

―

S89C1012(a)

1 2,3,4,5

50E47-50 to 59

50E47-250 to 259

― ― ―

Note: For timing parameters see Table 2.

(a) The BGH2UNCNTRLHT-01 Universal and the referenced control ignition trial times are different; however, the

ignition trial time is within the design tolerance of the referenced control.
(b) The BGH2UNCNTRLHT-01 Universal between trial purge time is longer than that of the referenced control.
(c) The BGH2UNCNTRLHT-01 Universal between trial purge and igniter warmup times is longer than those of the

referenced control.
(d) The BGH2UNCNTRLHT-01 Universal ignition trial time is shorter than that of the referenced control. Be sure

to observe appliance operation to assure reliable performance.
(e) The BGH2UNCNTRLHT-01 Universal pre-purge time is longer than that of the referenced control
(f) The BGH2UNCNTRLHT-01 Universal pre-purge and between trial purge times are longer than those of the

referenced control.
(g) The BGH2UNCNTRLHT-01 Universal pre-purge, between trial purge, and igniter warmup times are longer

than those of the referenced control.

BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions 3

Table 1: BGH2UNCNTRLHT-01 Universal Cross Reference

Switch

Positions

ON

1,5 2,3,4

Switch

Positions

OFF

White-Rodgers Robershaw Honeywell Fenwal

50E47-40 to 49

50E47-240 to 249

50F47-50 to 59

1,4 2,3,5

1,4,5 2,3

50F47-250 to 259

50F47-40 to 49

50F47-240 to 249

50E47-70 to 79

1,3 2,4,5

50E47-270 to 279

50F47-70 to 79

HS780-34NL-304A(c)

50F47-270 to 279

50E47-60 to 69

1,3,5 2,4

50E47-260 to 269

50F47-60 to 69

HS780-17NL-304A(b) ―

50F47-260 to 269

1,3,4 2,5 ― ―

― ― ―

― ― ―

― ―

S89H1003(c)
S89G1005(c)

05-356265-151(a,g)
05-356265-152(a,g)

―

05-356265-051(a,c)
05-356265-052(a,c)

S8910U
S890G1003(f)
S890H1002(f)

1,3,4,5 2 ― ― ― ―

1,2 3,4,5

1,2,5 3,4

1,2,4 3,5

1,2,4,5 3

50E47-30 to 39

50E47-230 to 239

50E47-20 to 29

50E47-220 to 229

50F47-30 to 39

50F47-230 to 239

50F47-20 to 29

50F47-220 to 229

― ― ―

― ― ―

― ― ―

― ―

05-356225-151(a,g)
05-356225-152(a,g)

Note: For timing parameters see Table 2.

(a) The BGH2UNCNTRLHT-01 Universal and the referenced control ignition trial times are different; however, the

ignition trial time is within the design tolerance of the referenced control.
(b) The BGH2UNCNTRLHT-01 Universal between trial purge time is longer than that of the referenced control.
(c) The BGH2UNCNTRLHT-01 Universal between trial purge and igniter warmup times is longer than those of the

referenced control.
(d) The BGH2UNCNTRLHT-01 Universal ignition trial time is shorter than that of the referenced control. Be sure

to observe appliance operation to assure reliable performance.
(e) The BGH2UNCNTRLHT-01 Universal pre-purge time is longer than that of the referenced control
(f) The BGH2UNCNTRLHT-01 Universal pre-purge and between trial purge times are longer than those of the

referenced control.
(g) The BGH2UNCNTRLHT-01 Universal pre-purge, between trial purge, and igniter warmup times are longer

than those of the referenced control.

4 BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions

Table 1: BGH2UNCNTRLHT-01 Universal Cross Reference

Switch

Positions

ON

Switch

Positions

OFF

White-Rodgers Robershaw Honeywell Fenwal

50E47-10 to 19

1,2,3 4,5

50E47-210 to 219

50F47-10 to 19

― ― ―

50F47-210 to 219

50E47-1 to 9

1,2,3,5 4

50E47-201 to 209

50F47-1 to 9

HS780-17NL-104A

HS780-17NR-104A

―

05-356225-051(a,c)
05-356225-052(a,c)

50F47-201 to 209

1,2,3,4 5 ― ― S8910U ―

1,2,3,4,5 none ― HS780-34NR-104A

S89C1046
S89C1103

―

Note: For timing parameters see Table 2.

(a) The BGH2UNCNTRLHT-01 Universal and the referenced control ignition trial times are different; however,

the ignition trial time is within the design tolerance of the referenced control.

(b) The BGH2UNCNTRLHT-01 Universal between trial purge time is longer than that of the referenced control.
(c) The BGH2UNCNTRLHT-01 Universal between trial purge and igniter warmup times is longer than those of

the referenced control.

(d) The BGH2UNCNTRLHT-01 Universal ignition trial time is shorter than that of the referenced control. Be

sure to observe appliance operation to assure reliable performance.
(e) The BGH2UNCNTRLHT-01 Universal pre-purge time is longer than that of the referenced control
(f) The BGH2UNCNTRLHT-01 Universal pre-purge and between trial purge times are longer than those of the

referenced control.
(g) The BGH2UNCNTRLHT-01 Universal pre-purge, between trial purge, and igniter warmup times are longer

than those of the referenced control.

BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions 5

Replacing the Existing Ignition Control

7. Mount the new control with #6 sheet metal or

!

CAUTION: Risk of Electric Shock.

Disconnect power supply before making electrical

connections to avoid electric shock.

!

WARNING: Risk of Explosion or Fire.

Shut off the gas supply at the main manual shutoff
valve before installing or servicing the control.
Failure to shut off the gas supply can result in the
release of gas during installation or servicing, which
can lead to an explosion or fire, and may result in

severe personal injury or death.

!

WARNING: Risk of Explosion, Fire, or

Electric Shock. Label all wires before they are

disconnected when replacing or servicing the
control. Wiring errors can cause improper or
dangerous operation and may result in an explosion,
fire, or electric shock leading to severe personal

injury or death.

To remove the existing ignition control:

1. Shut off power to the appliance.

2. Turn off the gas at the main manual shutoff valve
adjacent to the appliance. (If the manual shutoff
valve services more than one appliance, be sure
to light the other pilots before leaving the
installation.)

3. Label each wire with the correct terminal
designation prior to disconnection.

machine screws through the mounting holes in
the enclosure.

8. Refer to the Wiring section for electrical

connections and wiring diagrams. Perform the

Checkout section before leaving the installation.

9. Check all wiring for proper connections and make
sure your system is properly grounded.

Wiring

!

WARNING: Risk of Explosion or Fire.

Locate all safety, limit, and operating controls in
series with the thermostat terminal (TH) on the
ignition control. Improper installation may cause gas
leaks, which can lead to an explosion or fire and
may result in severe personal injury or death.

Refer to Figure 1 and Figure 2 for wiring diagrams. All
wiring should be in accordance with the National
Electrical Code (NEC) and all other local codes and
regulations.

Check the voltage rating marked on the control and
make sure it is suited to the application. Use a Class 2
transformer capable of providing 24 VAC under
maximum load, including valves. A transformer having
excessive primary impedance due to poor coupling
affects the ignition potential.

The control is supplied with a jumper wire between
Sense (terminal 10) and 120/240V Hot HSI
(terminal 7). With the jumper in, flame is sensed
through the high voltage HSI (Hot Surface Igniter)
wire. The jumper must be removed for external flame
sense and the sense electrode wired to the Sense
terminal.

4. Disconnect the wires from the existing control.

5. Remove the screws holding the ignition control to
the valve (if direct valve-mount model) or remove
the screws holding the control to the appliance
chassis (if foot-mount model).

6. Remove the old ignition control and discard.

IMPORTANT: Do not mount the control where

it can be exposed to direct infrared radiation from the
main burner or to temperatures in excess of the

maximum product temperature rating.

6 BGH2UNCTRLHT-01 Universal Hot Surface Ignition Control Installation Instructions

!

WARNING: Risk of Electric Shock.

Before applying power to the control, connect all
wires properly to the controller. Verify the controller
is properly grounded. Failure to follow this procedure
can cause electric shock and may result in severe
personal injury or death.