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Contents
The ECO Gas-fired water boilers. . . . . . . . . . . . . . . . 2
Please read before proceeding . . . . . . . . . . . . . . . . 5
Boiler location . . . . . . . . . . . . . . . . . . . . . . . . . 6
Wall-mounting the boiler. . . . . . . . . . . . . . . . . . . . 8
Display bracket installation . . . . . . . . . . . . . . . . . 10
Boiler hydrostatic test . . . . . . . . . . . . . . . . . . . . 11
Converting boiler to propane — ECO 70/110 . . . . . . . . 13
Converting boiler to propane — ECO 155 . . . . . . . . . . 15
Gas piping — sizing gas lines . . . . . . . . . . . . . . . . 17
Venting/air piping — general . . . . . . . . . . . . . . . . 18
Commonwealth of Massachusetts installations . . . . . . 21
Vent termination requirements . . . . . . . . . . . . . . . 22
Boiler room air openings. . . . . . . . . . . . . . . . . . . 23
DIRECT VENT — Sidewall with separate pipes . . . . . . . 24
DIRECT VENT — Sidewall concentric . . . . . . . . . . . . 26
DIRECT VENT — Sidewall with W-M vent/air plate . . . . . 28
DIRECT VENT — Vertical with separate pipes. . . . . . . . 30
DIRECT VENT — Vertical concentric. . . . . . . . . . . . . 32
Concentric termination, typical (sidewall or vertical). . . . 34
Vent and air piping and boiler connections . . . . . . . . . 35
Install water piping . . . . . . . . . . . . . . . . . . . . . 36
Direct Connect System Piping . . . . . . . . . . . . . . . . 37
Verify the application will work. . . . . . . . . . . . . . . . . . 37
Expansion Tank Location . . . . . . . . . . . . . . . . . . . . . 37
Diaphragm- or bladder-type tank. . . . . . . . . . . . . . . . . 37
Closed-type expansion tank . . . . . . . . . . . . . . . . . . . 38
System water piping methods . . . . . . . . . . . . . . . . . . 38
System circulators and zone circulators . . . . . . . . . . . . . 38
System water piping methods . . . . . . . . . . . . . . . . . . 39
Install relief valve . . . . . . . . . . . . . . . . . . . . . . . . . 40
ZONE VALVE zoning – direct connection. . . . . . . . . . . . . . . 41
Primary/Secondary System Piping . . . . . . . . . . . . . 42
Expansion Tank Location . . . . . . . . . . . . . . . . . . . . . 43
Diaphragm- or bladder-type tank. . . . . . . . . . . . . . . . . 43
Closed-type expansion tank . . . . . . . . . . . . . . . . . . . 44
System water piping methods . . . . . . . . . . . . . . . . . . 45
Install relief valve . . . . . . . . . . . . . . . . . . . . . . . . . 46
ZONE VALVE zoning – primary/secondary . . . . . . . . . . . . . . 47
CIRCULATOR zoning – primary/secondary . . . . . . . . . . . . . . 48
CIRCULATOR zoning – primary/secondary multi. temp. zone . . . . 49
Multiple boiler installations . . . . . . . . . . . . . . . . . 50
Install condensate line . . . . . . . . . . . . . . . . . . . . 54
Gas piping . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Field wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Wiring diagram — schematic . . . . . . . . . . . . . . . . 60
Wiring diagram — ladder . . . . . . . . . . . . . . . . . . 61
EXPRESS SETUP — using default settings . . . . . . . . . 62
ECO control operation . . . . . . . . . . . . . . . . . . . . 63
ESSENTIAL settings . . . . . . . . . . . . . . . . . . . . . 65
ECO control settings menus . . . . . . . . . . . . . . . . . 66
BOILER SETTINGS menu . . . . . . . . . . . . . . . . . . . 67
HEATING SETTINGS menu . . . . . . . . . . . . . . . . . . 68
DHW SETTINGS menu . . . . . . . . . . . . . . . . . . . . 70
CIRCULATOR EXERCISING and FREEZE PROTECTION . . . . 71
DIAGNOSTIC menu . . . . . . . . . . . . . . . . . . . . . . 72
DATE AND TIME menu . . . . . . . . . . . . . . . . . . . . 74
Startup — fill the system . . . . . . . . . . . . . . . . . . 75
Startup — final checks . . . . . . . . . . . . . . . . . . . 77
Check-out/startup verification. . . . . . . . . . . . . . . . 82
Annual startup and general maintenance . . . . . . . . . . 83
Annual startup . . . . . . . . . . . . . . . . . . . . . . . . 84
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 90
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . 98
Cleaning heat exchanger flue side, 70/110 . . . . . . . . . 100
Cleaning heat exchanger flue side, 155 . . . . . . . . . . . 103
Replacement parts . . . . . . . . . . . . . . . . . . . . . . 106
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Ratings — ECO boilers. . . . . . . . . . . . . . . . . . . . 119
Ratings — Multiple ECO boilers . . . . . . . . . . . . . . . 120
Installation and Service Certificate . . . . . . . . . . . . . 121
ECO Gas Boiler Data Collection Sheet . . . . . . . . . . . . 122
NOTES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
DO NOT SERVICE THE
BOILER WITHOUT A ECO
MAINTENANCE KIT AVAILABLE
The ECO maintenance kit includes components that may
have to be replaced when accessing or disassembling parts
of the boiler. Failure to replace damaged components and
to use only the parts specifically intended for the boiler
can result in severe personal injury, death or substantial
property damage. See Figure 109, page 107 for part number.
Part number 550-142-122/0513
4
TM
GAS-FIRED WATER BOILER — Boiler Manual
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