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SUPPLEMENTAL INSTALLATION AND
OPERATING INSTRUCTIONS
FlexGas™
For Hi Delta Models
302BD–2342BD
FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors and liquids
or other combustible materials in the vicinity of this or any other appliance. To do so may
result in an explosion or fire.
NOTE: THIS MANUAL IS SUPPLEMENTAL FOR THE FLEXGAS MODELS OF
THE HI DELTA HEATERS. THIS MANUAL ADDRESSES THE SPECIFIC DIF-
FERENCES BETWEEN THESE HEATERS AND STANDARD HI DELTA
MODELS. Please refe
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Rev. 3 reflects the following: Changes to: step 4 of the FlexGas System Start-up section on page 7; the Wiring Diagram was moved from page 5 to page 9; the addition of: a note to the Attach Manometers to Measure Pressures section on page 7. 2
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2-stage, 8 = 3-stage and 9 = 4-stage). NOTE: Not all WARNING: Do not use this heater if any part has these firing options are available on all heaters. been under water. Immediately call a qualified serv- Refer to the Hi Delta manual for available firing ice technician to inspect the heater and to replace options. The second group of characters identifies the any part of the control system and any gas control size of the heater (four numbers representing the which has been under water. approxi
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All Raypak heaters are National Board Approved, and Installation Codes design-certified and tested by the Canadian Stan- dards Association (CSA) for the U.S. and Canada. Installations must follow these codes: Each heater is constructed in accordance with Section IV of the American Society of Mechanical Engineers • Local, state, provincial, and national codes, laws, (ASME) Pressure Vessel Code, and bears either the regulations and ordinances ASME “H” stamp for boilers or “HLW” stamp for water • N
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Low Gas Pressure Switch (Optional on 302BD-902BD) Fig. 2: Gas Supply Connection - Top View Gas Supply Pressure CAUTION: DO NOT adjust the individual heater gas valve pressure settings when firing with A minimum of 5.0 in. WC and a maximum of 10.5 in. propane gas. Propane adjustments (if neces- WC upstream gas pressure is required under load and sary) should ONLY be made to the FlexGas no-load conditions for natural gas. A minimum of 8.0 propane regulator. in. WC and a maximum of 13.0 in. WC
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Propane Supply Pressure Test Point Gas Valve Output Tap Models: 302BD-902BD Models: 992BD- 2342BD Fig. 4: FlexGas Gas Pressure Measurement Locations any part of the control system and any gas control Start-up which has been under water. • Check around unit for debris and remove combus- For Your Safety tible products, i.e. gasoline, etc. Pre Start-up Check WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing prop- 1. Verify heater is filled with water.
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Preparation 4. Check if the service regulator is installed and/or adjust the service regulator. WARNING: Do not turn on gas at this time. WARNING: This FlexGas heater is intended for operation on Natural Gas as the primary fuel. DO Check Power Supply NOT use this heater with Propane Gas as the pri- mary fuel. With multi-meter at incoming power in Hi Delta heater, check voltage between: FlexGas System Start-up Hot - Common (≈120 VAC) Hot - Ground (≈120 VAC) 1. Turn off unit. Ensure that the switc
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8. If burner does not light on first trial. It will retry, up NOTE: Reset Low Gas Pressure Switch (when to three times. equipped) if necessary. Refer to Fig. 2 for location. 9. Main burner ignition: Check upper manifold gas From PRO to NAT: pressure. 1. Turn the boiler off (power switch on front control 10. If the pressure readings differ by more than ± 0.1 panel). in. WC, remove screw cover from the gas pres- sure regulator on the FlexGas fuel train and adjust 2. Turn FlexGas key to “OFF”. un
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4. Remove all manometers and replace caps and screws. 5. Replace all gas pressure caps. 6. Check for gas leaks one more time. 7. Restart unit. Fig. 5: FlexGas Control Panel Wiring Diagram * *Optional on 302BD–902BD Fig. 6 Wiring Diagram 9
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10
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CALL OUT DESCRIPTION 302BD-652BD 752BD-902BD 992BD-1262BD 1532BD-2342BD 1-C KEY SWITCH ASSY 011943F 011943F 011943F 011943F 2-C RELAY-SPDT 120 VAC 012126F 012126F 012126F 012126F 3-C CONNECTOR-WIRE BONDING 007155F 007155F 007155F 007155F 1-G GAS SOLENOID VALVE (NAT) 011910F 011910F 011911F 011911F 2-G GAS SOLENOID VALVE (PRO) 012125F 011910F 011910F 011910F 4-G MANUAL GAS VALVE (NAT) 011945F 011945F 007665F 007665F 5-G MANUAL GAS VALVE (PRO) 011944F 011945F 011945F 011945F 6-G GAS REGULATOR VALV
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www.raypak.com Raypak, Inc., 2151 Eastman Avenue, Oxnard, CA 93030 (805) 278-5300 Fax (805) 278-5468 Litho in U.S.A.
