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Project Name / Date Division 23 52 33.13 - 3
d. Temperature and pressure gauge
2. The boiler(s) shall be equipped with an energy-saving pump control relay (Economaster II),
mounted and wired, which automatically shuts off the boiler pump at a set period after boiler
shut-down (adjustable for five or ten minutes) to avoid standby losses associated with
constant pump operation.
G. Firing Mode
1. For models 992BE, provide three-stage firing control of the gas input to the boiler.
2. For models 1262BE-2342BE, provide four-stage firing control of the gas input to the boiler.
H. Boiler Diagnostics
1. Provide external LED panel displaying the following boiler status/faults:
a. Power on – Blue
b. Call for heat – Amber
c. Flow – Green
d. Stages 1-4 – Green
e. Fans 1-3 proven – Green
f. Ignition fault – Red
g. Safety fault – Red
2. Provide internal circuit board with fault history, indicating the following safety faults by LED
signal:
a. System status
b. Manual reset high limit
c. Auto reset high limit (optional)
d. Low water cut-off (optional)
e. Blocked vent
f. Low gas pressure switch
g. High gas pressure switch (optional)
h. Controller alarm (optional)
i. Flow switch
j. Air pressure
k. Factory option
l. External interlock
m. Cold Water Start/Cold Water Run (optional)
n. Ignition lock-out
3. A Central Point Wiring board with diagnostic LED’s indicating the status of each relay.
4. Provide ignition module indicating the following flash codes by LED signal and displayed on
LCD display:
a. 1 flash – low air pressure
b. 2 flashes – flame in the combustion chamber w/o CFH
c. 3 flashes – ignition lock-out (flame failure)
d. 4 flashes – low hot surface igniter current
e. 5 flashes – low 24VAC
f. 6 flashes – internal fault (replace module)
I. Combustion Chamber: The lightweight, high temperature, multi-piece, interlocking ceramic fiber
combustion chamber liner shall be sealed to reduce standby radiation losses, reducing jacket
losses and increasing unit efficiency.
J. Venting
1. When routed vertically, the boiler’s flue material and size shall meet or exceed the
requirements specified for Category II in the National Fuel Gas Code, ANSI Z223.1/NFPA 54
latest edition.
2. When routed horizontally, the boiler(s) flue material and size shall meet or exceed the
requirements as specified for Category III in the National Fuel Gas Code, ANSI Z223.1/NFPA
54 latest edition.
3. The boiler(s) shall be ducted combustion air ready.
K. Cabinet
1. The corrosion-resistant galvanized steel jackets shall be finished with a baked-on epoxy