Operating Instructions; Before Start-Up; Start-Up Procedures - Rheem Raypak 207A Installation And Operation Manual

8. OPERATING
INSTRUCTIONS

Before Start-Up

Burners
Keep heater area clear and free from combustibles,
flammable liquids and chemicals. Do not obstruct the flow
of combustion and ventilation air.
Water
Water must be flowing through the heater during operation.
Ensure that the system is filled with water and that the
pump is operating.

Start-Up Procedures

Your pool/spa heater has been designed for years of safe
and reliable pool/spa water heating. It is available with only
electronic ignition. ASME-certified units typically used in
commercial applications, are also available. This manual
provides installation, operation, maintenance, and service
information for these heaters.
TEMP ADJUST BUTTONS
LCD DISPLAY
Figure 62. Heater Control Toggle Switch
If your digital heater has been installed correctly, operating
the heater is an easy task. The upper front panel of the
heater contains the control center that allows you to turn
the heater On or Off and adjust the temperature settings
for the pool or spa. The temperature range is factory set
from 65°F (18°C) to 104°F (40°C). See Figure 62 for
location of toggle switch to turn the heater On and Off.
See Section 7 for additional details about the use of the
controls in the Control Adjustments subsection.
After Start-Up
Feel the inlet and outlet pipes. Outlet pipe should be only
slightly warmer than the inlet. It should not be hot.
A WARNING: Should overheating occur or the gas
supply fail to shut off, turn off the manual gas control to
the appliance.
32
MODE BUTTON
TEMP
MODE
ON
OFF
Visual Inspection
Flames can be observed through the opening below the
plenum. Flame color is blue and evenly spread on the top
surface of the burner. At least every three months a visual
inspection should be made of the burners.
Water Pressure Switch
A water pressure switch is provided in the heater to shut
off the burners in the event that water supply is interrupted.
It is very important to verify that the switch electrically
opens and shuts off the gas valve when water flow to the
heater is interrupted. Otherwise rapid and severe damage
will likely occur to the heater.
The water pressure switch should be checked and adjusted
for proper operation by a qualified service person at the
time of installation and periodically checked thereafter.
Refer to "Water Pressure Switch Adjustment" on page
28.
Figure 63. Water Pressure Switch
A WARNING: Operation of the heater without water
circulation will cause rapid and severe damage to the
heater. Such damage is not covered under warranty.
Blower Adjustment
This heater is equipped with a combustion air plate (baffle)
mounted on the air intake to the combustion air blower.
The baffle has a hole that is utilized to control the air inlet
to the blower.
When the combustion air setting is proper, there will be
some lifting of the flames on some areas of the burner
deck under cold-start conditions. After about five minutes
of operation, the flames should settle down and blue
tips should become visible. Lifting of flames beyond five
minutes would indicate too much combustion air.
F10671