4
A
WARNING:
Do not use this heater if any part has
been under water. Immediately call a qualified service
technician to inspect the heater and to replace any part
of the control system and any gas control which has
been under water.
A
WARNING:
Should overheating occur or the gas
supply valve fail to shut off, do not turn off or disconnect
the electrical supply to the heater. Instead, shut off the
gas supply at a location external to the heater.
A
WARNING:
Risk of electrical shock. More than one
disconnect switch may be required to de-energize the
equipment before servicing.
A
WARNING:
This FlexGas heater is intended for
operation on Natural Gas as the primary fuel. DO NOT
use this heater on Propane Gas as the primary fuel.
Raypak strongly recommends that this manual be
reviewed thoroughly before installing your Hi Delta heater
equipped with FlexGas. Raypak also recommends that the
appropriate Hi Delta Installation and Operating Instruction
manual (241663 for models 302C-902C, or 241664
for models 992C – 2342C) be thoroughly read before
attempting to install these heaters. Factory warranty does
not apply to heaters that have been improperly installed
or operated. (Refer to the warranty at the back of the
standard Hi Delta manuals.) Installation and service must
be performed by a qualified installer, service agency or
gas supplier. If, after reviewing these manuals, you still
have questions which these manuals do not answer,
please contact the manufacturer or your local Raypak
representative.
Thank you for purchasing a Raypak product. We hope you
will be satisfied with the high quality and durability of our
equipment.
Model Identification
The model identification number and heater serial number
are found on the heater rating plate located on the lower
right outside jacket of the heater. The model number
will have the form H9 1262CD or similar depending on
the heater size and configuration. The letter(s) in the
first group of characters identifies the application (H =
Hydronic Heating, WH = Domestic Hot Water (DHW), P =
Pool). The number which follows identifies the firing mode
(1 or 4 = on-off, 3 = 2-stage, 8 = 3-stage and 9 = 4-stage).
NOTE:
Not all these firing options are available on all
heaters. Refer to the Hi Delta manual for available firing
options. The second group of characters identifies the size
of the heater (four numbers representing the approximate
MBTUH input), and, where applicable, a letter, indicating
the manufacturing series. The final character is the letter
“D” which designates the heater as a FlexGas-equipped
heater.
NOTE:
Not all these firing options are available on all
heaters.
Model
Input
(MBTUH)
Pipe Size
(Nat)
Pipe Size (LP)
302CD
300
1-1⁄4"
3⁄4"
402CD
399
1-1⁄4"
3⁄4"
502CD
500
1-1⁄4"
3⁄4"
652CD
650
1-1⁄4"
3⁄4"
752CD
750
1-1⁄4"
1-1⁄4"
902CD
900
1-1⁄4"
1-1⁄4"
992CD
990
2"
1-1⁄4"
1262CD
1260
2"
1-1⁄4"
1532CD
1530
2"
1-1⁄4"
1802CD
1800
2"
1-1⁄4"
2072CD
2070
2"
1-1⁄4"
2342CD
2340
2"
1-1⁄4"
Table A. FlexGas Specifications
Ratings and Certifications
Standards
• ANSI Z21.13 · CSA 4.9 - latest edition, Gas-Fired
Hot Water Boilers
• CAN 3.1 - latest edition, Industrial and Commercial
Gas-Fired Package Boilers
• ANSI Z21.56 · CSA 4.7 - latest edition, Gas-Fired
Pool Heaters
• ANSI Z21.10.3 · CSA 4.3 - latest edition, Gas Water
Heaters
APPROVED
UNCONTROLLED DOCUMENT IF PRINTED
