CR7890B1019: 3.78 lb (1.71 kg).
114372 Quartz Viewing Window; rated for 20 psi (138 kPa).
114465 Gasket, silicone rubber; for installing viewing
window (three required).
120739 Gasket, fiber-neoprene; heat insulation and
seal-off for mounting flange.
118367A Swivel Mount.
122748 Quartz Viewing Window, rated for 50 psi (345 kPa).
124204 Quartz Focusing Lens, rated for 20 psi (138 kPa);
increases the CR7890-sensed ultraviolet radiation.
120934 Mounting Flange, aluminum, with 3/4 inch NPT
internal threads for attaching to sight pipe.
124198 Mounting Flange, aluminum, with 1 inch NPT internal
threads for attaching to sight pipe.
123539 Antivibration Mount.
204341A Mirror Assembly.
32005580-001 Cable for connecting Keyboard Display
Module (KDM) to CR7890.
32006648-001 Cover with Communications Port Access,
NEMA1, 130°F (54°C) Ambient Operating Temperature.
32007181-001 Wiring Harness with 9-pin Brad Harrison®
S7800A1001 Keyboard Display Module (English). Other
language models are available.
Fire or Explosion Hazard.
Can cause property damage, severe injury or
To prevent possible hazardous burner operation, verify
safety requirements each time a control is installed on
When Installing this Product...
1. Read these instructions carefully. Failure to follow them
could damage the product or cause a hazardous
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your
3. Installer must be a trained, experienced flame
safeguard service technician.
4. After installation is complete, check out product
operation as provided in these instructions.
CR7890B 7800 SERIES INTEGRATED BURNER CONTROL
Electrical Shock Hazard.
Can cause serious injury or death.
1. Disconnect power supply before beginning
installation to prevent electrical shock and
equipment damage. More than one disconnect may
2. Do not remove the blue housing from the base.
High voltage exists within the device and could
cause serious injury or death.
1. All wiring must be NEC Class 1 (line voltage).
2. Wiring must comply with all applicable codes,
ordinances and regulations.
3. Voltage and frequency of the power supply
connected to this device must agree with the values
marked on the device.
4. Loads connected to the CR7890 must not exceed
those listed on the device label or the specifications.
5. Limits and interlocks must be rated to simultaneously
carry and break current to the ignition transformer,
pilot valve, and main fuel valve(s).
6. All external timers must be listed or
component-recognized by authorities who have
7. For on-off gas-fired systems, some authorities who
have jurisdiction prohibit the wiring of any limit or
operating contacts in series between the flame
safeguard control and the main fuel valve(s).
8. Sight the device so it does not respond to ignition
9. On multiburner installations, each device must
respond only to the flame of the burner it is
10. This equipment generates, uses and can radiate
radio frequency energy and, if not installed and used
in accordance with the instructions, can cause
interference in radio communications. It has been
tested and found to comply with the limits for a Class
B computing device of part 15 of FCC rules which
are designed to provide reasonable protection
against such interference when operated in a
commercial environment. Operation of this
equipment in a residential area can cause
interference, in which case, the users, at their own
expense, may be required to take whatever
measures are required to correct this interference.
Canadian EMI: This digital apparatus does not exceed the
Class B limits for radio noise for digital apparatus set out in the
Radio Interference Regulations of the Canadian Department
Le présent appareil numérique n'émet pas de bruits
radioélectriques depassant les limites applicables aux
appareils numériques de la Classe B prescrites dans le
Règlement sur le brouillage radioélectrique édicté par le
ministère des Communications du Canada.
Proper flame detector installation is the basis of a safe and
reliable flame safeguard installation. Refer also to the burner
manufacturer instructions. Carefully follow all instructions for
the best possible flame detection application.