Raypak X94 Installation & Operating Instructions Manual - Part One
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PART ONE
OWNER'S OPERATING INSTRUCTIONS
FOR YOUR SAFETY - READ BEFORE OPERATING
WARNING: IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY
RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
INTRODUCTION
Your pool/spa heater has been designed for years of safe and reliable pool/spa water heating. It is available with
electronic ignition. This manual provides installation, operation, maintenance, and service information for these
heaters.
With proper installation and setup, operation of the heater is straightforward. The upper front panel of the heater
contains the control center that allows you to turn the heater On or Off, select the mode of operation, and adjust
the temperature settings for the pool or spa. The temperature range is factory set from 50°F (18°C) to 104°F
(40°C). See figure above for location of toggle switch to turn the heater On and Off. Section 4 of this manual con-
tains more details about the use of the controls in the Control Adjustments subsection (starting on page 34).
SECTION 1 - START-UP PROCEDURE
1. Clean air louvers of dust, lint and debris.
2. Keep heater area clear and free from com-
bustibles, flammable liquids and chemicals.
3. Remove the top panel by removing the two screws
at the rear of the heater and the knurled screw
above the control panel. Lift the top panel off and
set it aside. Visually verify that the filter box intake
is not obstructed and that the filter is clean.
4. Water must be flowing through the heater during
operation. Ensure that the system is filled with
water and the pump is operating. Double check
for any water leaks.
5. Purge air from the gas line. Insufficient purging
may keep the heater from lighting on the first try.
6. Double check gas connections, make sure no
leaks are present. Use soapy water to inspect.
7. Double check incoming electrical power, verify suf-
ficient supply of 120V/1ph/60Hz power to the
heater.
8. If installed indoors, make sure flue gases are vent-
ed properly, and that combustion and makeup air
openings are adequate and clear of obstruction.
9. Verify that the fuel type of the unit matches the
supply gas.
10. Locate and turn the manual gas valve ON.
11. Locate the plugged bleedle valve on the pipe
downstream of the gas valve.
12. Remove the bleedle plug and connect a manome-
ter capable of reading up to -24" WC (-6 kPa).
13. Locate and flip the display lid upwards.
14. Turn the heater on, by pressing the ON/OFF tog-
gle switch on the front display.
15. Set the mode to either SPA or POOL. For installa-
tions utilizing the Raypak Expanded Function
Board refer to the installation and set up instruc-
tions on page 36-37 to set up the pump, valve and
auxiliary functions prior to firing the heater.
16. If the set point is higher than the current tempera-
ture, the heater will begin its startup sequence.
17. The ignition control will verify that the blower relay
is open before starting the blower. Once proven
open, the blower will be powered to start the igni-
tion sequence.
18. Once the blower relay proves, a 45 second pre-
purge period will begin to purge the combustion
chamber.
19. Once the pre-purge period ends, the igniter will
begin to spark just prior to the gas valve opening.
The gas valve will open for a 4 second trial for igni-
tion. If flame is proven, the heater will operate to
meet heat demand. If flame is not proven, the
CAUTION: The X94 manifold and blower suction
pressures measured at this point are negative, and
can be as high as -19" WC (-4.73 kPa) when the
blower is at full speed and the gas valve is closed.
Verify that manometers are rated appropriately and
set up to take measurements of this magnitude.