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Part Number 550-110-639/0703
28
EG, PEG, EGH GAS-FIRED BOILERS — SERIES 4 — BOILER MANUAL
Standard equipment
Factory-Assembled Section Block
Insulated Extended Jacket
Draft Hood
Aluminized Steel Burners
Non-Linting Pilot Burner
Heater Cover Plates (for boilers with tankless heater openings)
Control Wire
Electrical Junction Box
EG boilers add:
Combination Gas Valve for 24 volt
Thermocouple (high efficiency models)
Rollout Thermal Fuse Element
Spill Switch
Highest Efficiency Models, PID Intermittent Electronic
Ignition System and Automatic Vent Damper
High Efficiency Models, SPD Constant Burning, Thermally
Supervised Pilot System and Automatic Vent Damper
For EG water boilers
Built-In Air Eliminator
30 P.S.I. Relief Valve
Combination Pressure Temperature Gauge
High-Limit Control
40 VA Transformer with Receptacle for Circulator Relay
Circulator Relay
For EG steam boilers
Relief Valve
Steam Pressure Gauge
High-Limit Pressure Control
Syphon
Gauge Cocks
Gauge Glass
Low-Water Cutoff
40 VA Transformer
EG additional equipment
Tankless Water Heater – EG-35-65 PI and SP EG-75 PI only
With tankless heater: Combination High Limit, Low Limit, Circulator
Control, and Relay with 40 VA Transformer
Tankless Steam Heater - EG35-75
With Tankless Heater:
Operating Control Tankless Heater 35-S-29 for All Units
EGH boilers add:
Combination Gas Control Valve (includes main gas valve with redundant seat, PI
and PI with damper models; main gas valve with single seat, 24V models;
pressure regulator, gas cock, pilot filter, pilot adjustment)
Highest Efficiency Models, PI Intermittent Electronic
Ignition System
High Efficiency Models, SP Constant Burning,
Thermally Supervised Pilot System, Thermocouple
100% Shutoff
40 VA Transformer with Receptacle for Circulator Relay
F
or EGH water boilers
Built-in Air Eliminator
30 P.S.I. Relief Valve
Combination Pressure-Temperature Gauge
High-Limit Control for PI and PI with Damper Models
Dual-Limit Control for Standard Efficiency Models
Circulator Relay
For EGH steam boilers
Relief Valve
Steam Pressure Gauge
High-Limit Pressure Control (two limit controls on EGH-85 and 95 SP)
Syphon
Gauge Cocks
Gauge Glass
Low-Water Cutoff – Probe Type
EGH additional equipment
Tankless Heaters – PI Water or Steam,
SP Steam only
With Tankless Heater(s):
Operating Control
Automatic Vent Damper