Boiler Control; Status Of Indicator Lights (Led's) - Slant/Fin VSPH-60 Operating Instructions Manual

22
a. Input for PROPANE is approximately at rating shown on
rating plate when manifold pressure is 241 mm (9
column.
b. Input for NATURAL GAS is approximately at rating when
manifold pressure is 89 mm (3
be checked on the gas meter:
Input = W/m x m metered in 3 minutes x 20
3 3
(Input = Btu/cu. ft. x cu.ft. metered in 3 minutes
x 20)
Example #1:
For 8.29 W/m gas, this becomes:
3
Input = m metered in 3 minutes x 8.29 x 20
3
(For 1000 Btu/cu.ft. gas, this becomes:
Input = cu. ft. metered in 3 minutes x 1000 x 20)
Example #2:
For 8.70 W/m gas this becomes:
3
Input = m metered in 3 minutes x 8.70 x 20
3
(For 1050 Btu/cu.ft. gas, this becomes:
Input = cu. ft. metered in 3 minutes x 1050 x 20)
4. The higher heating value* of gas varies substantially for dif-
ferent localities. Consult with Slant/Fin's Technical Service
Dept. for re-orificing procedures if any of the following
apply:
a. Boiler (burner) is overfiring. CAUTION! National Fuel
Gas Code ANSI Z223.1-latest edition or CSA B149.1-00
for natural gas and propane, does NOT permit firing at a
higher input rate than the input rate indicated on the
boiler rating plate in order to avoid hazardous condi-
tions such as explosion or carbon monoxide poisoning.
b. Poor higher heating value* of gas is causing the actual
A. NORMAL OPERATION - STATUS OF INDICATOR LIGHTS (LED'S)
O = LED off
DESCRIPTION OF OPERATION
Standby-Boiler waits for call for
heat
Thermostat calls for heat
Circulator on
Boiler water temperature below
high limit setting
Inducer on
Pressure switch contacts closed
30 seconds pre-purge period
Trial for ignition
Gas valve open
Pilot flame and main burners on
Boiler heating period
Thermostat call for heat ends
Circulator off
15 seconds post purge period.
Burners off.
/ ") water
1
2
/ ") water column, but should
1
2
= LED steady on
POWER
LED
input to be substantially lower than the rating plate indi-
cation.
* "Higher heating value" of gas is commonly known as a "heating value."
INTEGRATED BOILER CONTROL
BOILER RATED INPUT
8.29 W/m (1000 Btu/cu. ft.)
3
Natural Gas
m /hr cu.ft./hr.
3
1.70
2.55
3.40
4.25
5.10
The integrated boiler control monitors the status of the room
thermostat, high limit control (Aquastat), pressure switch
and the flame sensor. It controls the operation of circulator,
inducer motor, gas valve and spark for pilot ignition. The boil-
er control also determines the sequence of operation and
timing for pre and post purge periods, trail for ignition and
lockout.
The control indicator lights (LED's) provide information of
boiler operation when lights are steady on or diagnostic
information when they are flashing in order to help to deter-
mine the cause of boiler failure.
TSTAT/CIRC LIMIT
LED LED
O
O
O
O
VICTORY VSPH Models
GAS CONSUMPTION
(1000 Btu/cu. ft.)
8.29 W/m
3
gas in 3 minutes, at rated input
m
3
60 0.08
90 0.13
120 0.17
150 0.21
180 0.25
PRESS
SWITCH
LED
O
O
O
cu.ft.
3.00
4.50
6.00
7.50
9.00
FLAME
LED
O
O
O
O
O