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Part number 550-141-850/0699
•
Installation
•
Star
t-U
p
•
P
ar
ts
•
Maintenanc
e
Figure 36
Jacket assembly
85042
1
2
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Boiler manual
1
How it works . .
2
3Part number 550-141-850/0699
3
Please read before proceeding
4
Contents
6
Overview of this section
8
Installations must
9
High altitude
9
Clearance options:
10
Flooring and foundation
11
Vent system
12
Vent termination and
12
When removing a boiler
12
Air contamination
13
GV with other appliances
14
Single air opening option
14
GV without other appliances
14
GV combustion air options
14
Sizing air openings
14
Special considerations
15
Prepare boiler — overview
16
(cont.)
17
Check for correct
18
White side (propane plate)
19
(Install with this side
19
Gas/air manifold
19
Jacket left
21
Interior panel
21
(2) 10-32 x 3/8"
21
Phillips/hex screws
21
Position boiler
22
Perform hydrostatic pressure
24
To fill/drain
25
Water piping — overviewIIIa
26
Water piping — relief valve
27
Air separator
28
Expansion tank
28
Backflow preventer
28
To cold fill
29
1 1"
30
2 – 3 1½"
30
4 – 5 2"
30
6 – 8 2½"
30
9 – 12 3"
30
Baseboard system piping
31
Radiator system piping
32
GV Boiler
33
12"
33
Multi-zone radiant heating
34
Outdoor reset control
34
Piping snow melt systems or
35
Water chiller systems
36
Venting and combustion airIV
37
Gas pipingV
38
Manifold
39
Field wiringVI
40
Field wiring
41
Factory wiring
41
Start-up — overviewVIIa
42
Start-up — preparationVIIb
42
(cont.)VIIb
43
Verify gas/air orifice plate
43
Check for gas leaks
43
Fill the system with water
43
Inspect system water piping
43
Perform final checks before
44
Start the boiler
44
Check system and boiler
44
Observation port
45
Connect and adjust manometer
46
Check Gas Control Set Point
46
At Least
47
6 Inches
47
IIc to check size
48
VIId, step 5
48
POWER and FLAME lights
49
Field wiring, manual
49
Thermostat(s)
49
GCM lights, see
50
X, Troubleshooting
50
Operation — sequenceIXb
51
Ladder diagram legend
52
Selector arm
54
Position
55
Gas control knob
55
Service and maintenance
56
Service technician
57
Owner maintenance
57
Annual start-up only
58
Annual start-up —
58
(cont.)Xc
60
Condensate drain line
63
(cont.)Xd
64
Overview of this
66
Check switch pressure setting
68
Return to normal operation
68
Blower Housing
69
Gas Valve
69
Control Module
70
120 VAC H
71
120 VAC N
71
— Troubleshooting
74
Figure 34, Item 4
75
(continued)XIg
76
PRES SWITCH & POWER
77
Figure 34, Item
81
Description Model Weil-McLain
84
Figure 35 Section assembly
85
Figure 36 Jacket assembly
87
Vent starter
89
Description Weil-McLain
90
Figure 38 Trim assembly
91
Figure 39 Interior panel
93
Dimensions and ratingsXIII
94
Table 12 Boiler ratings
95
Weil-McLain
96
500 Blaine Street
96
Michigan City, IN 46360-2388
96
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