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Table of Contents

EQUIPMENT DESCRIPTION  ............................................................................................. 2
INSTALLATION  .......................................................................................................... 2,3, 4
INITIAL START-UP ........................................................................................................ 4, 5
OPERATION  .................................................................................................................. 5,6

SEQUENCE OF OPERATION ............................................................................................ 7

WATER CONDITIONING ................................................................................................... 8

REFERENCES .................................................................................................................. 8

MAINTENANCE & CLEANING ..................................................................................... 9, 10

TROUBLESHOOTING .................................................................................... 11, 12, 13, 14

PARTS LISTS ............................................................................................ 5, 16, 17, 18, 19

DIAGRAMS & SCHEMATICS ........................................................................... 20, 21, 22, 23

MAINTENANCE LOG ...................................................................................................... 24

WARRANTY INFORMATION ........................................................................................... 25

Содержание NGB

Страница 1: ...R SMELLS GAS THIS INFORMATION SHALL BE OBTAINED BY CONSULTING YOUR LOCAL GAS SUPPLIER AS A MINIMUM TURN OFF THE GAS AND CALL YOUR LOCAL GAS COMPANY AND YOUR AUTHORIZED SERVICE AGENT EVACUATE ALL PERSO...

Страница 2: ...his unit does not extend to 1 Installation and start up 2 Simple adjustments such as tightening fittings and electrical connections 3 Malfunction as a result of improper maintenance 4 Repairs made by...

Страница 3: ...2 3 4 INITIAL START UP 4 5 OPERATION 5 6 SEQUENCE OF OPERATION 7 WATER CONDITIONING 8 REFERENCES 8 MAINTENANCE CLEANING 9 10 TROUBLESHOOTING 11 12 13 14 PARTS LISTS 5 16 17 18 19 DIAGRAMS SCHEMATICS 2...

Страница 4: ...de 2 Installation of the Gas Steam Generator under a ventilating hood is required Installation of the ventilating hood should comply with local codes and or ANSl NFPA 96 Latest Edition Also the Gas St...

Страница 5: ...less elbows and a length of no more than 6 feet A 2 IPS header is recommended for a drain line with more than 2 elbows or a length greater than 6 feet The header drain must have a gravity flow and ven...

Страница 6: ...d the knob in for 60 seconds allowing the thermocouple to heat up so it will keep the gas valve open d For NGB 2 E Turn the knob on the gas valve to the ON position 5 For NGB or NGB E Push the ON OFF...

Страница 7: ...use If it does not contact your Groen Authorized Service Agent The operating controls for NGB and NGB E are 1 The ON OFF switch on the cabinet front panel This control is used to call for electrical...

Страница 8: ...The red light in the switch will come on and the unit will automatically fill with water When the water level in the gauge glass reaches the full mark the green READY light will come on Push the STAR...

Страница 9: ...pressure rise to 12 PSI the mid range pressure switch will open both the condenser water valve and the blow down valve to decrease the pressure rapidly As steam pressure decreases below 10 1 2 PSI th...

Страница 10: ...d water through a properly maintained softener Exchangeable softener cartridges or a regeneratable softener can be used In either case establish a regular program of exchanging the cartridges or regen...

Страница 11: ...ter level in the steam generator should be between the lines on the level gauge glass 3 The strainers in the drain and feed lines should be cleared 4 Check the burner gas jet primary air inlets They s...

Страница 12: ...lief valve 4 Remove the brass plug from the front of the generator 5 Open the manual drain valve 6 Wash out the inside of the boiler with a water hose The rinse water along with the accumulated solids...

Страница 13: ...Water switch to confirm it is on c That electric power is on Check main circuit breaker or fuse and power supply to the building d Strainer for build up of solids e For a defective water level control...

Страница 14: ...e If not correct inspect wiring f Pressure switch If set too low reset If con tinuity check reveals a defect replace Ref 23 Main burner will not light g Gas valve and replace if defective Ref 10 a Pos...

Страница 15: ...Time delay relay If defective replace Ref 28 c Connections for time delay relay Air vent leaks a Clean or replace vent Ref 4 a Water supply to confirm that it is on and the pressure is 25 to 30 PSI Co...

Страница 16: ...from the receptacle of the control module and reading voltage across the pins of the igniter receptacle Ref 25 If 115 V is not present replace the control module Ref 25 C Model NGB Eonly Glow coil do...

Страница 17: ...3442 RELAY CONTROL 10 49274 VALVE GAS NAT PILOT IGNITION 28 49980 RELAY DELAY 50727 VALVE GAS NAT COIL IGNITION 29 54281 TERMINAL BLOCK 18 TABS 50838 VALVE GAS PROPANE PILOT IGNITION 30 51716 TERMINA...

Страница 18: ......

Страница 19: ...1 4 NPT X 1 1 2 LONG 66 049277B BAFFLE BURNER 22 012747 SYPHON PRESS GA TBE 1 4 NPT 67 050490 BRACKET BURNER SUPPORT 23 013207 TEE 1 4 NPT 68 047267 BURNER ASSY W JETS NATURAL 24 026514 TUBE 3 8 O D x...

Страница 20: ......

Страница 21: ...ALVE GAS 1 2 X 1 2 PROPANE 23 090694 SIPHON PRESSURE SWITCH 71 076423 THERMOCOUPLE 36 LONG 24 090695 SIPHON PRESSURE SWITCH 72 076421 PILOT BURNER NATURAL GAS 25 090692 FITTING MALE RUN TEE NPT MALE 0...

Страница 22: ...For NGB 2 NGB 2 E Made After August 7 1991...

Страница 23: ...Electrical Schematics For NGB 2 made between January 1 1988 and August 7 1991...

Страница 24: ...Electrical Schematics For NGB NGB E made before January 1 1988...

Страница 25: ...Wiring Ladder Diagrams...

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