Heating Basics â Gas Valve Systems - Robertshaw Thermostats

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Hydraulic Actuated – Standing Pilot System 56F LO 1 2 3 4 5 6 7 8 HI 90F ECO (Limit) Gas Cock Temperature Control Knob Sensing Bulb Safety Pilot and Thermocouple
Additional Gas Valve Characteristics • Combination Gas Valves • Open Valve Options – Standard Opening – Slow Opening – Step Opening – Two-stage Models • Close Valve Options – Snap Action – Snap Throttle
Page 1 and 2: Heating Basics - Gas Valve Systems
Page 3 and 4: Acronyms BTU = British Thermal Unit
Page 5 and 6: Fuel Characteristics of British The
Page 7 and 8: NFPA 54 National Fuel Gas Code •
Page 9 and 10: Central Heating Applications Factor
Page 11 and 12: Commercial Water Heating Applicatio
Page 13 and 14: Residential Water Heating Applicati
Page 15 and 16: Millivolt Actuated Gas Valve Wall T
Page 17: 24 Volt Actuated - Standing Pilot S
Page 21 and 22: Additional Gas Valve Characteristic
Page 23 and 24: Snap-Action And Snap-Throttle Hydra
Page 25 and 26: Ignition Control Systems • Standi
Page 27 and 28: Acronyms GRD = Ground IGN = Ignitio
Page 29 and 30: Gases Used In Applications • Liqu
Page 31 and 32: Feature List for Ignition Controls
Page 33 and 34: Intermittent Pilot Checkout Procedu
Page 35 and 36: Hot Surface Ignition (HSI) ROBERTSH
Page 37 and 38: Hot Surface Terminology • Pre-Pur
Page 39 and 40: Hot Surface Sequence of Operation
Page 41 and 42: Flame Rectification AC CURRENT Flam
Page 43 and 44: Hot Surface Igniters • Hot Surfac
Page 45 and 46: Pilot Basics
Page 47 and 48: Proper Pilot Flame Correct Fl
Page 49 and 50: Thermocouple Parts • The 1980 ser
Page 51 and 52: Thermopile Basics Hot Junctions Col
Page 53 and 54: Gas Valve Installation Tips Determi
Page 55 and 56: Troubleshooting Tips for Gas System
Page 57 and 58: Troubleshooting Tips Problem # 1: H
Page 59 and 60: Troubleshooting Tips Problem # 3: M
Page 61 and 62: Website Tools: www.Uni-Line.com Ent

Heating Basics â Gas Valve Systems - Robertshaw Thermostats

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Heating Basics â Gas Valve Systems - Robertshaw Thermostats