Before Installation; Receiving Equipment; Rating And Certifications; Elevation - Raypak 266A Installation And Operation Manual

skimmer. High chemical concentrations will result when the
pump is not running (e.g. overnight).
Chlorinators must feed downstream of the heater and have
an anti-siphoning device to prevent chemical backup into the
heater when the pump is shut off.
See "Plumbing Diagrams" on page 21.
NOTE: High chemical concentrates from feeders and
chlorinators that are out of adjustment will cause rapid
corrosion to the heat exchanger. Such damage is not
covered under the warranty.

3. BEFORE INSTALLATION

Receiving equipment

The manufacturer recommends that this manual be
reviewed thoroughly before installing the pool/spa heater. If
there are any questions that this manual does not answer,
please contact the factory or your local representative.
On receipt of your equipment visually check for external
damage to the carton. If the carton is damaged, a note
should be made on the Bill of Lading when signing for
the equipment. Remove the heater from the carton. If it is
damaged, report the damage to the carrier immediately.
Save the carton.
These items are shipped inside a box in the carton with
the heater:
Standard Unit (POLYMER HEADERS)
1. "Pagoda" top
2. 2" CPVC union half with "O" rings (2)
3. Plastic pipe finish flange for gas line
4. Bonding lug with mounting screw (Digital) models
only)
ASME Unit (BRONZE HEADERS)
1. "Pagoda" top
2. 2" CPVC union half with "O" rings (2)
3. Plastic pipe finish flange for gas line
4. Bonding lug with mounting screw (Digital models
only)
5. Pressure Relief Valve (PRV)
6. Protek Shield™ Adapter with Protek Shield Assy,
O-ring and wing nut (end of 3Q 2020 onward)
6
THE MODEL AND SERIAL NO. CAN
ALSO BE FOUND INSIDE THE
BEZEL ABOVE THE DISPLAY
MODEL AND SERIAL
NO. LOCATED ON
RATING PLATE
Figure 1. Rating Plate Location
Be sure that you receive the number of packages indicated
on the Bill of Lading.

Rating and certifications

These heaters are design-certified and tested under the
latest requirements of the ANSI Z21.56 / CSA 4.7 Standard
for Gas-Fired Pool Heaters. All heaters can be used either
indoor or outdoors when appropriate venting is installed.
The appropriate top designated for each type of use is
required. If necessary, the top can be changed at a later
date to change from outdoor to indoor or vice versa.
All Bronze header units have heat exchangers which
are ASME-certified (BPV Section IV part HLW) and are
registered with National Board.

Elevation

Rated inputs are suitable for up to 2,000 ft (610 m)
elevation. For elevations above 2,000 ft (610 m), reduce
input 4% for each 1,000 ft (305 m) above sea level, as high
elevation reduces combustion performance.

Ambient Temperature Rating

Heater Components
Millivolt Heater with Honeywell Gas Valve 32°F to 175°F
(0°C to 79°C)
Millivolt Heater with Robertshaw Gas Valve 0°F to 175°F
(-18°C to 79°C)
Electronic Ignition Heater* -32°F to 175°F (-35°C to 79°C)
*Requires 120 or 240VAC, 1 Ph, 60 Hz Power Supply
F10640-1