Westinghouse WBRCNG140F Installation Manual Page 25
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- Table of contents
- TROUBLESHOOTING
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25
WHL-015 REV. 12.17.14
If using a condensate pump, select one approved for use with condensing boilers and furnaces. The pump should have an overflow
switch to prevent property damage from condensate spillage.
It is very important that the condensate piping be no smaller than ¾”. To prevent sagging and maintain pitch, condensate piping should
be supported with pipe supports, and pitched ¼” per foot to allow for proper drainage.
The condensate line must remain unobstructed, allowing free flow of condensate. If condensate freezes in the line, or if line is
obstructed in any other manner, condensate can exit from the tee, resulting in potential water damage to property.
PART 7 – GAS PIPING
FIRE AND/OR EXPLOSION HAZARD
To avoid serious injury or death, the gas line installation and the gas line inlet pressure test must be done by a licensed professional.
Always match the appliance with the type of gas supplied to the unit (natural gas or LP gas). This appliance must be converted into
propane operation unless specifically manufactured for use with propane. Follow Gas Conversion Manual instructions (separate
document). Propane ready appliances have the suffix “LP” after the model serial number.
Make sure the gas line pressures are within normal limits. Pressures outside normal limits can result in poor performance and
hazardous operating conditions.
This appliance must be converted into propane operation unless it is specifically manufactured to operate on propane. Propane-ready
appliances have the suffix “LP” after the model serial number. Failure to ensure the appliance is set to operate on the provided gas
supply could result in property damage, personal injury, or death.
A. GAS PIPE SIZING TABLES
1. Gas Pipe Sizing
This information is for reference use only. Refer to gas pipe manufacturer specifications for actual delivery capacity. The DOE standard
for Natural Gas is 1100 BTU/ft
3
. Contact the local gas supplier for actual BTU/ft
3
rating.
2. Natural Gas Pipe Sizing
The following tables list maximum capacity of pipe in cubic feet of gas per hour for gas pressures of 0.5 psi or less and a pressure drop
of 0.5 inches water column, based on a 0.60 specific gravity for natural gas.
Maximum Natural Gas Delivery Capacity – Length of Corrugated Stainless Steel Pipe in Feet
Pipe Size
Cubic Feet per Hour (0.60 Specific Gravity, 0.5 WC Pressure Drop)
10
20
30
40
50
60
80
100
150
200
½”
82
58
47
41
37
37
29
26
20
18
¾”
192
137
112
97
87
80
69
62
48
44
1”
383
269
218
188
168
153
132
118
91
82
1 ¼”
639
456
374
325
292
267
232
208
171
148
1 ½”
1260
888
723
625
559
509
440
393
320
277
2”
2930
2080
1700
1470
1320
1200
1040
933
762
661
Table 11 – Natural Gas Delivery Capacity – Corrugated Stainless Steel Pipe – Refer to ANSI Z223.1 – National Fuel Gas Code,
Latest Edition
Maximum Natural Gas Delivery Capacity – Length of Black Iron Pipe (Sch. 40 Metallic) in Feet
Pipe Size
Cubic Feet per Hour (0.60 Specific Gravity, 0.5 WC Pressure Drop)
10
20
30
40
50
60
80
100
150
200
½”
172
118
95
81
72
65
56
50
40
34
¾”
360
247
199
170
151
137
117
104
83
71
1”
678
466
374
320
284
257
220
195
157
134
1 ¼”
1390
957
768
657
583
528
452
400
322
275
1 ½”
2090
1430
1150
985
873
791
677
600
482
412
2”
4020
2760
2220
1900
1680
1520
1300
1160
928
794
Table 12 – Natural Gas Delivery Capacity – Black Iron Pipe – Refer to ANSI Z223.1 – National Fuel Gas Code, Latest Edition
- Gas Fired 1
- Residential 1
- Combi Boiler 1
- FOREWORD 4
- FOR THE INSTALLER 4
- TABLE OF CONTENTS 4
- PART 2 – SAFETY REGULATIONS 8
- B. IMPROPER COMBUSTION 9
- E. WATER QUALITY 10
- F. FREEZE PROTECTION 10
- A. UNCRATING THE APPLIANCE 13
- C. LEVELING 15
- PART 5 – VENTING 18
- B. APPROVED VENT MATERIALS 20
- E. VENT TERMINATION 22
- SAFETY INSTRUCTIONS 23
- PART 7 – GAS PIPING 25
- PART 8 – WATER PIPING 27
- B. DHW PIPING 28
- D. CIRCULATOR SIZING 32
- E. PRESSURE RELIEF VALVE 33
- B. WIRING INFORMATION 34
- C. DIP SWITCHES 35
- Figure 25 – Ladder Diagram 37
- A. CONTROL PANEL 40
- B. LCD DISPLAY DESCRIPTIONS 40
- C. START-UP SEQUENCE 40
- F. CHANGING THE CH SET-POINT 41
- G. STORAGE MODE 42
- H. STATUS DISPLAY MODE 42
- I. INSTALLER MODE 43
- J. ERROR MODE 45
- K. ERROR TREE ANALYSIS 48
- M. 0-10 VOLT INPUT 50
- B. CHECK FOR GAS LEAKS 51
- WHAT TO DO IF YOU SMELL GAS 52
- E. PURGE AIR FROM DHW SYSTEM 53
- G. CONDENSATE REMOVAL 54
- PART 13 – TROUBLESHOOTING 57
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