R7140G,L,M BURNER CONTROL MODULES
5
66-1153—2
a
30 seconds with JR2 clipped and jumper from terminal 8 to terminal 15.
*
STANDBY and RUN can be an infinite time period.
** PURGE will be determined by which ST7800A purge card is selected; 15 timings are available from 2 seconds to 30 minutes.
NOTE: Allowable inrush can be up to ten times the pilot duty
rating.
EXAMPLE: Pilot duty rating = 50 VA.
At 120 V, running current is:
50/120 = 0.42A.
Maximum allowable inrush is ten times 0.42A = 4.2A.
INSTALLATION
When Installing this Product...
1.
Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous
condition.
2.
Check the ratings given in the instructions and marked
on the product to make sure the product is suitable for
the application.
3.
Installer must be a trained, experienced, flame
safeguard service technician.
4.
After installation is complete, check out the product
operation as provided in these instructions.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe injury,
or death.
To prevent possible hazardous burner operation, verify
safety requirements each time a control is installed on
a burner.
WARNING
Electrical Shock Hazard.
Can cause serious injury or death.
Disconnect the power supply before beginning
installation. More than one power supply disconnect
may be required.
Table 4. Terminal Ratings.
Terminal
Typical Load
Maximum Rating at 120 Vac, 60 Hz
5 or 6
Ignition
Transformer/Pilot
Valve/First Stage Fuel Valve
4.5A ignition and 50 VA pilot duty, or
2.5A ignition and 75 VA pilot duty.
7
Main Fuel Valve(s) (solenoid/
motorized/diaphragm) and
Vent Valve, if required
250 VA pilot duty or 65 VA pilot duty in parallel with motorized valve(s) using a total of
1150 VA locked rotor (inrush), 460 VA to open, and 250 VA to hold or motorized valve(s)
using a total of 1500 VA locked rotor (inrush), 600 VA to open, and 250 VA to hold.
Table 5. Sequence Timing for Normal Operation.
Device
I
nitiate Standby Purge
Flame
Establishing
Period
Run
Post
Purge
Timing Interlock Circuits
Firing
Rate
Circuit
Energy
Saving
Pre-Purge
Approval
Code
Bodies
Pilot
Main
R7140G 10 sec.
*
**
4 or 10
sec.
10, 15
sec.
a
or
intermittent.
*
15 sec. Pre-Ignition,
Running, Low Fire
4-wire
modulating
No
UL/CSA
Modulating
R7140L
10 or 15
sec.
a
Pre-Ignition,
Lockout High and
Low Fire
FM/IRI
Modulating
R7140M
10 sec. or
intermittent
Pre-Ignition,
Running, isolated
Low Fire.
2-wire
isolated
On-Off-On
contacts
UL/CSA
On-Off.