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Catalog No.: 3500.98A
®
DELTA LIMITED , TYPE WH - MODELS 989B-2339B
Effective: 10-15-08
SUGGESTED SPECIFICATIONS
Replaces: 9-15-02
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 us 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
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2.2 WATER HEATERS A. General 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 85 percent at full fire. 3. The water heater(s) shall be ASME inspected and 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 65 lbs. /square foot or less. B. Heat Ex
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2. The water heater(s) shall be equipped with a fixed 5-minute energy-saving pump control relay, mounted and wired, which automatically shuts off the water heater pump at five-minutes after water heater shut-down to avoid standby losses associated with constant pump operation. G. Firing Mode 1. For models 989B, provide two-stage firing control of the gas input to the water heater. 2. For models 1259B, provide three-stage firing control of the gas input to the water heater. 3. For models 15
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1. The water heater(s) shall be configured with a cold water start automatic proportional bypass system that ensures the water heater will experience inlet temperatures in excess of 105ºF in less than 7 minutes to avoid damaging condensation. The unit will automatically shut down if the 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. T
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B. Manufacturer’s representative to verify proper and complete installation. 3.2 START-UP A. Shall be performed by Raypak factory-trained personnel. B. Test during operation and adjust if necessary: 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
