Raypak 902B - Manual (Page 3)

Project Name / Date 3
2. The pool heater(s) shall be equipped with an energy-saving pump relay, mounted and wired,
which automatically shuts off the pool heater pump at a set period after pool heater shut-down
(adjustable for five or ten minutes) to avoid standby losses associated with constant pump
operation.
G. Firing Mode
1. For all models, provide on/off control of the gas input to the pool heater.
H. Pool Heater Diagnostics
1. Provide external LED panel displaying the following pool heater status/faults:
a. Power on - Blue
b. Call for heat – Amber
c. Flow - Green
d. Stages 1 and 2 – Green
e. Fan 1 proven - Green
f. Ignition fault - Red
g. Safety fault - Red
2. Provide internal circuit board indicating the following safety faults by a 2 line, 20 character
LCD display:
a. System status
b. Manual reset high limit
c. Auto reset high limit
d. Low water cut-off
e. Blocked vent switch
f. Flow switch
g. Air pressure switch
h. Factory option
i. External interlock
j. Ignition lock-out
Specifier Note: The following items are options. Delete if not being specified.
k. Low water cut-off
l. Low gas pressure switch
m. High gas pressure switch
n. Controller alarm
o. Cold Water Run
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 pool heater’s flue material and size shall be in accordance with the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 latest edition (Category I).
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 pool heater(s) shall be ducted combustion air ready.
K. Cabinet
1. The corrosion-resistant galvanized steel jackets shall be finished with a baked-on epoxy
powder coat which is suitable for outdoor installation, applied prior to assembly for complete
coverage, and shall incorporate louvers in the outer panels to divert air past heated surfaces.