BEFORE INSTALLATION
Raypak strongly recommends that this manual be re-
viewed thoroughly before installing your XTherm
heater. Please review the General Safety information
before installing the heater.Factory warranty does not
apply to heaters that have been improperly installed or
operated. (Refer to the warranty at the back of this
manual.) Installation and service must be performed
by a qualified installer,service agency or gas supplier.
If, after reviewing this manual, you still have questions
which this manual does not answer, please contact
yourlocal Raypak representative or visit our website at
www.raypak.com.
Thank you for purchasing a Raypak product. We hope
you will be satisfied with the high quality and durability
of our equipment.

Product Receipt

On receipt of your heater it is suggested that you visu-
ally check for external damage to the shipping crate. If
the crate is damaged, make a note to that effecton the
Bill of Lading when signing for the shipment. Next,
remove the heater from the shipping packaging.
Report any damage to the carrier immediately.
On occasion, items are shipped loose. Be sure that
you receive the correct number of packages as indi-
cated on the Bill of Lading.
Claims for shortages and damages must be filed with
the carrier by consignee. Permission to return goods
must be received from the factory prior to shipping.
Goods returned to the factory without an authorized
Returned Goods Receipt number will not be accepted.
All returned goods are subject to a restocking charge.
When ordering parts, you must specify the model and
serial number of the heater.When ordering under war-
ranty conditions, you must also specify the date of
installation.
Purchased parts are subject to replacement only
under the manufacturer’s warranty. Debits for defec-
tive replacement parts will not be accepted. Parts will
be replaced in kind only per Raypak’s standard war-
ranties.

Model Identification

The model identification number and heater serial
number are found on the heater rating plate located on
the upper rear jacket panel of the heater. The model
number will have the form H7-2005 or similar depend-
ing on the heater size and configuration. The letter(s)
inthe first grou p of characters identifies the application
(H = Hydronic Heating, WH = Domestic Hot Water
(DHW), WHP = Water Heater for Pool Heating). The
number which follows identifies the firing mode (7 =
electronic modulation, 1 = On/Off). 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 manufac-
turing series.

Ratings and Certifications

Standards:
• ANSI Z21.13 · CSA 4.9 - latest edition, Gas-Fired
Hot Water Boilers
• CAN 3.1 - latest edi tion, Industri al and
Commercial Gas-Fired Package Boilers
• ANSI Z21.10.3 · CSA4.3 - latest edition, Gas Wa-
ter Heaters
• SCAQMD Rule 1146.2
All Raypak heaters are National Board Approved, and
design-certifiedand tested by the Canad ian Standards
Association (CSA) for the U.S. and Canada. Each pri-
mary heat exchanger is constructed in accordance
with Section IV, and each secondary heat exchanger
in accordance with Section VIII, of the American
Society of Mechanical Engineers (ASME) Hea ter
Pressure VesselCode and bears the applicable ASME
stamp.This heater also complies with the latest edition
of the ASHRAE 90.1 Standard.

Installations at Elevation

Rated inputs are suitable for up to 4,500 ft elevation
without de-rating. Consult your local representative or
the factory for installations at altitudes over 4,500 ft
above sea level. No hardware changes are required to
the heaters for installations up to 10,000 ft (adjust-
ments may be required).
WARNING: Altering any Raypak pressure vessel
by installing replacement heat exchangers, tube
bundle head ers, or any A SME parts n ot
manufactured an d/or approved by Ray pak will
instantly void the ASME and CSA ratings of the
vessel and any Raypak warranty on the vessel.
Altering the ASME or CSAratings of the vessel also
violates national, state, and local approval codes.
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