Unified Brands Groen CNGB-24 Operator'S Manual Download Page 18

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18 OM-NGB

Parts List

NGB Electrical Controls

Key

Description

Part #

Switch “On/off”

088876

Switch “Start” (Momentary)

099290

Indicator Light “Reset”

099289

Light, Indicator Amber

116384

Light, Indicator Red (2)

116383

Terminal Block, 2-Pole

003887

Bushing Snap 11/16” ID

012864

Circuit Board Support

099292

Water Level Control Board
Assembly

116016

Lug, Ground 14-6 AWG

119829

Circuit Breaker

119860

Transformer, 75VAC

121715

Relay, DPDT 24VAC 30A

121733

Water Level Control Board
Assembly

122192

Harness, Electrical Box

130446

Bracket, Circuit Breaker

137254

Electronic Cabinet,
Weldment

137257

Summary of Contents for Groen CNGB-24

Page 1: ...ING Improper installation adjustment alteration service or maintenance can cause property damage injury or death Read the installation operating and maintenance instructions thoroughly before installi...

Page 2: ...6 In addition please review the sales terms and conditions set forth below IMPORTANT NOTICE WARRANTIES LIMITATIONS ON WARRANTIES AND LIMITATION OF REMEDIES The following Warranties Limitation on Warra...

Page 3: ...NATIONAL FIRE PROTECTION ASSOCIATION 60 Batterymarch Park Quincy Massachusetts 02269 NFPA 70 The National Electrical Code NFPA 54 Installation of Gas Appliances Piping NFPA 96 Ventilating Hoods NSF I...

Page 4: ...he boiler is constructed of 1 4 thick steel which is certified by the American Society of Mechanical Engineers ASME for pressure vessels All welds are hydrostatically tested The boiler is also equippe...

Page 5: ...The water going to the steam generator should be within these guidelines WATER QUALITY REQUIREMENTS Containment Water Supply pH 7 to 9 Total Dissolved Solids TDS 30 to 60 ppm Hardness less than 60 pp...

Page 6: ...g system by closing its individual manual shut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 PSI 3 45 kPA 1 Gas Supply Connection a...

Page 7: ...If it is over 60 PSI a pressure regulator is required A strainer screen at the connection is also recommended to trap any debris before it can enter the system c The boiler uses a maximum of 12 9 gal...

Page 8: ...o repeat the trial for ignition 5 Turn the on off switch on the cabinet front panel to the ON position The amber light in the switch will come on The boiler drain valve will close The unit will fill w...

Page 9: ...cally stop the gas flow and terminate the ignition trial If ignition is terminated turn the switch off and then ON again to repeat the trial Normally the pilot should light within five seconds of turn...

Page 10: ...ce the pressure has reached 9 1 2 PSI the main burner will be shut off by an operating pressure switch Residual heat stored in the boiler s heat exchanger can however cause the pressure to continue to...

Page 11: ...boiler The valve is located under the boiler 3 Close the manual drain valve 4 Turn off water supply to the boiler 5 Allow the boiler to cool This takes several hours so it is recommended that you cool...

Page 12: ...doors 19 Turn the on off switch OFF and slowly open the manual drain valve 20 When the boiler has drained completely close the manual drain valve and turn the on off switch to ON to fill the boiler w...

Page 13: ...ck of the following will help prevent down time and ensure continued efficient operation 1 Pressure gauge operation 2 Proper water level gauge 3 Strainer in water feed line clear 4 Air inlets for gas...

Page 14: ...an 60 PSI Authorized Service Rep Only c Is the Water Level Control Board defective Check for loose electrical connections on hi water fill solenoid X d Is the water fill solenoid valve defective X Che...

Page 15: ...ilds pressure but shuts down RESET light comes on User a Is the water level below the mid water level probe Verify that the water supply is sufficient to maintain the water level at or above the mid w...

Page 16: ...a Main Burner Assy 0 2000 Ft Elev Incl 29 Gas Jets W 54 Drill Dia Hole For Natural Gas 047267 7a Main Burner Assy 0 2000 Ft Elev Incl 29 Gas Jets W 68 Drill Dia Hole For Propane Gas 050491 8 Gas Valve...

Page 17: ...ssure Relief Valve 12PSI 099228 7 Water Level Probes lo med hi 076526 8 Solenoid Valve Water in 099220 9 Check Valve 004187 10 Air Vent 145167 11 Vacuum Breaker 090787 12 Globe Valve 1 2 NPT 099255 13...

Page 18: ...l Block 2 Pole 003887 Bushing Snap 11 16 ID 012864 7 Circuit Board Support 099292 8 Water Level Control Board Assembly 116016 9 Lug Ground 14 6 AWG 119829 10 Circuit Breaker 119860 11 Transformer 75VA...

Page 19: ...D 11 WHITE P1 J1 1 TSTAT DRAIN VALVE 1 2 2 T1 LO 14 5 PSI OPERATING PRESSURE GAS VALVE 7 YELLOW 8 BLACK C HL 12 BLACK 10 BLACK 9 RED C PS SW H C G BLACK YELLOW BLUE WHITE 4 BLACK 6 BROWN 5 BLUE 3 BROW...

Page 20: ...20 OM NGB Service Log Model No Purchased From Serial No Location Date Purchased Date Installed Purchase Order No For Service Call Date Maintenance Performed Performed By...

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