Raypak 300-850 User Manual

PART 1 - GENERAL

1.1 SUMMARY

A. Section includes condensing gas-fired, stainless steel hydronic heating boilers

Specifier Note: Use as needed

B. Related Sections

1. Building Services Piping – Division 23 21 00

2. Breeching, Chimneys, and Stacks (Venting) – Division 23 51 00

3. HVAC Instrumentation and Controls – Division 23 09 00

4. Electrical – Division 23 09 33

1.2 REFERENCES

A. ANSI Z21.13/CSA 4.9

B. ASME, Section IV

C. 2006 UMC, Section 1107.6

D. ANSI/ASHRAE 15-1994, Section 8.13.6

E. National Fuel Gas Code, ANSI Z223.1/NFPA 54

F. I=B=R

G. NEC

H. ASME CSD-1, 2009

XFYRE™, TYPE H - MODELS 300-850

SUGGESTED SPECIFICATIONS

DIVISION 23 52 33.13

STAINLESS STEEL HEATING BOILERS

Catalog No.: 2000.81A
Effective: 12/01/09
Replaces: 9/01/09

1.3 SUBMITTALS

A. Product data sheet (including dimensions, rated capacities, shipping weights, accessories)

B. Wiring diagram

C. Warranty information

D. Installation and operating instructions

1.4 QUALITY ASSURANCE

A. Regulatory Requirements

1. ANSI Z21.13/CSA 4.9

2. Local and national air quality regulations for low NOx (<20 PPM NOx emissions) boilers

B. Certifications

1. CSA

2. ASME H Stamp and National Board Listed

1.5 HEAT EXCHANGER WARRANTY

A. Limited ten-year closed-system heat exchanger warranty

B. Limited twenty-five-year thermal shock warranty

Project Name / Date Division 23 52 33.13 - 1

PART 2 - PRODUCTS

2.1 MANUFACTURER

A. Raypak, Inc.

1. Contact: 2151 Eastman Ave., Oxnard, CA 93030; Telephone: [phone];
Fax: [phone]; Web site: www.raypak.com

2. Product: XFyre™ condensing stainless steel hydronic heating boiler(s)

2.2 BOILERS

A. General

1. The boiler(s) shall be fired with

2. The boiler(s) shall be CSA tested and certified with a minimum thermal efficiency of 94 percent
at full fire.

3. The boiler(s) shall be ASME inspected and stamped and National Board registered for 160
PSIG maximum allowable working pressure and 210ºF maximum allowable temperature,
complete with a Manufacturer's Data Report.

4. The boiler(s) shall have a floor loading of 95 lbs./square foot or less.

B. Primary Heat Exchanger

1. The primary heat exchanger shall be of a helically wound, multi-pass
completely encircle the combustion chamber for maximum efficiency.

2. There shall be no banding material, bolts, gaskets or "O" rings in the header configuration. The
heat exchanger is removable from the cabinet for replacement without removing the entire
boiler assembly from the site. The stainless steel combustion chamber shall be designed to
have a trough located on the bottom front and back section leading to the middle to ensure
that condensation does not collect in the boiler.

3. The low water volume primary heat exchanger shall be explosion-proof on the water side and
shall carry a twenty-five-year warranty against thermal shock.

4. The flue connection, combustion air opening, gas connection, electrical connections and
condensate drain shall be located on the rear. Water connections shall be located on the left
rear top of the unit.

C. Condensate Drain

1. The boiler(s) will feature a condensate drain sensor which will shut down the boiler(s) if the
condensate drain is blocked.

D. Burners

1. The combustion chamber shall be of the sealed combustion type employing the Raypak high
temperature metal fiber burner, mounted in a horizontal orientation.

2. The burner shall be a premix design and constructed of high grade Inconel and must be
capable of firing at both a complete blue flame with maximum gas and air input as well as
firing infrared when gas and air are reduced. The burner must be capable of firing at 100% of
rated input when supplied with 4.0” WC of inlet gas pressure, so as to maintain service under
heavy demand conditions; no exceptions.

3. The burner shall use a combustion air blower to precisely control the fuel/air mixture for
maximum efficiency throughout the entire range of modulation. The combustion air blower
shall operate for a pre-purge period before burner ignition and a post-purge period after burner
operation to clear the combustion chamber.

4. The blower shall infinitely vary its output in response to a PWM signal supplied directly from
the integrated modulating control, thereby electronically and precisely adjusting the volume of
air and gas supplied for combustion. Minimum fire shall be 20 percent of rated input.

E. Pilot Control System

1. The boiler(s) shall be equipped with a 100 percent safety shutdown.

2. The ignition shall be spark ignition type with full flame rectification by the ignition source, with a
four try-for-ignition sequence, to ensure consistent operation.

3. The igniter will be located above the burner to ensure easy ignition.

gas at a rated input of BTU/hr.

design and shall

Project Name / Date Division 23 52 33.13 - 2