Honeywell 7800 Series Manual page 34

RM7800E,G,L,M
STATIC CHECKOUT
TABLE 7—STATIC CHECKOUT (Continued)
Test RM7800
No. Models
WARNING
!
Make sure all manual fuel shutoff valves are closed.
8 All
9 All
10 RM7800
E,G, L
models
11 RM7800
E,G, L
models
12 RM7800
E,L
models
13 RM7800
E,L
models
14 RM7800
E,G, L
models
15 RM7800M
models
with Open
Damper
Contacts
16 RM7800M
models
with Open
Damper
Contacts.
17 RM7800M
models
with
Open
Damper
Contacts
Final All
Test Volt-
Jumpers meter
4-9 — Automatic main fuel valve(s) opens.
If using direct spark ignition on a
model with intermittent pilot on
terminal 21, check the optional
second stage fuel valve, if used.
4 -3 — Alarm (if used) turns on.
4-5 18-L2 Firing rate motor drives open; zero
and volts at terminal 18 after motor
12-13 starts driving open.
4-5 18-L2 Firing rate motor drives closed; line
and voltage at terminal 18 after motor
14-13 is in Low Fire position.
4-5 19-L2 Firing rate motor drives open; line
and voltage at terminal 19 after motor
12-13 is in High Fire position.
4-5 19-L2 Firing rate motor drives closed; zero
and volts at terminal 19 after motor
14-13 starts driving closed.
15-13 — 1. Raise set point of Series 90
controller—firing rate motor
should drive toward open.
2. Lower set point of Series 90
controller—firing rate motor
should drive toward closed.
4-13 — If damper motor is used, motor
drives damper open.
4-5 18-L2 If damper motor is used, spring return 1. Low Fire Start Switch.
drives motor and damper closed;
line voltage at terminal 18 after
motor is in Low Fire position.
4-5 18-L2 If damper motor is used, motor
and drives open; zero volts at terminal
4-13 18 after motor starts driving open.
CAUTION
!
On completing these tests, open the master switch and remove all test jumpers from the
subbase terminals. Also remove bypass jumpers from the low fuel pressure limits (if
used).
Normal Operation
34
If Operation Is Abnormal,
Check The Items Listed Below
1. Listen for and observe operation
of the main fuel valve(s) and
actuator(s).
2. Valve(s) and actuator(s).
1. Alarm.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.
1. High Fire Purge Switch.
2. Firing rate motor and transformer.
1. Low Fire Start Switch.
2. Firing rate motor and transformer.
1. Series 90 Controller.
2. Firing rate motor and transformer.
1. Damper motor.
2. Damper motor.
1. Low Fire Start Switch.
2. Damper motor.