Weil-McLain WM97+70 Specifications Page 9
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WM97+ gas-fired water boiler — Boiler Manual
Provide clearances for service
access — RECOMMENDED
1. See Figure 1 for recommended service clearances.
2. If you do not provide minimum service clearances
shown, it might not be possible to service the boiler
without removing it from the space.
Closet or small-enclosure installations
which do not provide at least these recom-
mended clearances require the specially-
sized and placed air openings shown in
Figure 2
.
Provide clearances from combustible
materials — REQUIRED
1. See Figure 2 for REQUIRED minimum clearances. ALL installa-
tion must provide at least these minimums.
2. Hot water pipes — at least ½” from combustible materials.
3. Vent pipe — at least C\zn” from combustible materials.
4. See Figure 1 for service clearance minimums.
Closet or small-enclosure installations which do
not provide at least the recommended service clear-
ances shown in Figure 1 require the specially-sized
and placed air openings shown in Figure 2.
Figure 2 REQUIRED minimum clearances
(
all dimensions are in inches)
Figure 1 RECOMMENDED service clearances
(
all dimensions are in inches)
Boiler location (continued)
A Provide combustion air/ventilation openings per Figure 20, page 24 or as otherwise directed
in this manual or by applicable codes.
If the installation does not provide the
minimum clearances in Figure 1, then the enclosure MUST HAVE air openings located
per Figure 2, above. Each of these air openings must have free area of at least 1 square inch
per 1,000 MBH of boiler input.
B Left side clearance to combustibles = 0 inches minimum
C Top of boiler clearance to combustibles = 10.5 inches minimum
D Right side clearance to combustibles = 0 inches minimum
E Bottom of boiler clearance to combustibles = 5.75 inches minimum (must be 18 inches
above floor for garage installations)
F Clearance in front of the boiler = 0.5 inches, but
24 inches minimum required for service
G Air openings must be located in the FRONT of the enclosure, as shown. They must be no
more than 12 inches from the floor or ceiling, as shown.
H Vent pipe must be minimum 3/16 inch from combustibles. Opening in combustible wall,
floor, ceiling or roof must be 3/8” larger than flue pipe diameter, fitted with galvanized steel
thimble, or larger if required by codes or as specified by vent pipe manufacturer.
A Provide combustion air/ventilation openings per Figure 20, page 24 or as
otherwise directed in this manual or by applicable codes. NOTE: If the instal-
lation does not provide the minimum clearances in this illustration, then the
enclosure must have air openings located and sized per Figure 2.
B Left side service clearance = 3 inches minimum
C Service clearance above top of boiler = 12 inches minimum
D Right side service clearance = 3 inches minimum
E Service clearance below the boiler = 12 inches minimum
F Service clearance in front of the boiler = 24 inches minimum
ADDITIONAL service clearance may be
needed, depending on how piping is routed
to the boiler.
Companion Water Heater (CWH) installations — CWH units require a minimum clearance of 18 inches on one side,
right or left, for installation of the mixing valve and for clear view of the associated label. Also provide at least 1½ inches on the
opposite side. Additional clearance may be needed, depending on how piping is routed. Provide these clearances to allow for
future CHW installations as well as current installations. Mount the boiler at the height specified in Figure 5, page 11.
- 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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