Raypak Raytherm Finned Water-Tube Water Heaters user manual

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Catalog No.: 3500.90C

RAYTHERM , TYPE WH

Effective: 6-1-08

SUGGESTED SPECIFICATIONS
Replaces: 5-1-05


DIVISION 23 52 33.13

FINNED WATER-TUBE WATER HEATERS
PART 1 - GENERAL
1.1 SUMMARY
A. Section includes gas-fired, copper finned-tube water heaters for use with a storage tank.
B. Related Sections
Specifier Note: Use as needed
1. Building Services Piping – Division 23 21 00
2. Breeching, Chimneys, and Stacks (Venting) – Division 23 51 00
3. HVAC Instrumentation and Con

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1. The water heater(s) shall be fired with gas at a rated input of BTU/hr. 2. The water heater(s) shall be CSA tested and certified with a minimum thermal efficiency of 82 percent at full fire. 3. The water heater(s) shall be ASME inspected and HLW-stamped and National Board registered for 160 PSIG working pressure, complete with a Manufacturer's Data Report. 4. The water heater(s) shall have a floor loading of 70 lbs. /square foot or less. B. Heat Exchanger

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1. The water heater(s) shall be equipped to (a), (b), or (c): a. Provide full modulation of gas input to any load condition as low as 20% of the full rating of the water heater (5:1 ratio) without flashback, burning at orifices or improper combustion. b. Provide staged control of the gas input to the water heater. c. Provide on/off control of the gas input to the water heater. H. Water Heater Diagnostics 1. Provide ignition module indicating the following heartbeats (flashes) by LED signal

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inlet temperature is not achieved within the 7-minute time frame. 2. The cold water start system shall be configured with a modulating three-way valve that is controlled by a system-matched PID controller. The PID controller temperature sensor shall be located in the inlet header of the water heater. 3. The control shall have a temperature setting dial located on the face of the board. The temperature range of the dial shall be 105ºF to 120ºF. The PID Logic shall be capable of limiting sys

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1. Safeties (2.2 - F) 2. Operating Controls (2.3) 3. Static and full load gas supply pressure 4. Gas manifold and blower air pressure C. Submit copy of start-up report to Architect and Engineer. 3.3 TRAINING A. Provide factory-authorized service representative to train maintenance personnel on procedures and schedules related to start-up, shut-down, troubleshooting, servicing, and preventive maintenance. B. Schedule training at least seven days in advance. END OF SECTION Pro