Weil-McLain WM97+70 Specifications download pdf (Page 72)

Part number 550-142-120/0113

WM97+ gas-fired water boiler — Boiler Manual

– 72 –

WM97+ control operation (continued)

Figure 83 WM97+ control display screens and typical navigation

CWH Installations — See Companion Water Heater

manual for additional screen information. When the WM97+

control detects the CWH temperature sensors, it automati-

cally enables the CWH screens and CWH control operation.

1 2 ... 67 68 69 70 71 72 73 74 75 76 77 ... 135 136

Boiler Manual 1
Contents 6
Please read before proceeding 7
Boiler location 8
Boiler location (continued) 9
Wall-mounting the boiler 10
(continued) 11
Boiler hydrostatic test 12
(see legend at right) 13
(see legend below) 13
Part number 550-142-120/0113 14
(cont.) 15
Gas piping — sizing gas lines 18
Venting/air piping — general 19
Vent termination requirements 23
Boiler room air openings 24
Sidewall with separate pipes 27
Sidewall concentric 29
Vertical with separate pipes 31
Vertical concentric 33
Prepare roof penetrations 34
Mount concentric termination 34
USE SWEEP ELBOWS FOR ALL 36
VENT AND AIR PIPING — DO NOT 36
Install water piping 37
WM97+70 or 110 only 40
WM97+155 only 41
Existing expansion tanks 42
Expansion tank — WM97+155 43
System piping (continued) 45
Multiple boiler installations 56
Install condensate line 62
Gas piping 63
Field wiring 64
Field wiring (continued) 65
Wiring diagram — schematic 67
Wiring diagram — ladder 68
ONLY if the system meets the 69
WM97+ control operation 71
WM97+ control settings 74
BOILER SETTINGS menus 75
HEAT SETTINGS menus 77
DHW SETTINGS menus 80
CIRCULATOR EXERCISING and 82
DIAGNOSTIC menu 83
DIAGNOSTICS menu (continued) 84
MAINTENANCE INFO 86
Startup — ﬁll the system 87
Freeze protection (if used) 88
Startup — ﬁnal checks 89
70 or 110 89
Check water piping 90
Check gas piping 90
Check-out/startup veriﬁcation 94
Owner maintenance 95
Service technician 95
Annual startup 96
Annual startup (continued) 100
Troubleshooting 102
Troubleshooting (continued) 103
Maintenance 110
Inspect and clean the burner 112
Tools required 112
Before proceeding: 112
Cleaning the WM97+155 heat 115
Replacement parts 118
Replacement parts (continued) 119
Dimensions 132
Ratings — WM97+ boilers 133
HIGH __ MED __ LOW __OFF __ 135
HIGH __ LOW __ MED __OFF __ 136

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Weil-McLain WM97+70 Specifications Page 72

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