Crown Boiler MWC116ELT user manual

User manual for the device Crown Boiler MWC116ELT

Device: Crown Boiler MWC116ELT
Category: Boiler
Manufacturer: Crown Boiler
Size: 9.51 MB
Added : 5/2/2014
Number of pages: 88
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Abstracts of contents
Summary of the content on the page No. 1

D E S I G N E D T O L E A D
MWC Series
Mid Efficiency Gas-Fired Hot Water
Direct Vent Condensing Boilers
InStallatIon InStruCtIonS
these instructions must be affixed on or adjacent to the boiler.
Models:
WarnInG: Improper installation, adjustment, alteration,
service or maintenance can cause property damage, injury,
• MWC116ENT
or loss of life. For assistance or additional information, con-
• MWC116ELT
sult a qualified installer, service agency or the

Summary of the content on the page No. 2

Summary of the content on the page No. 3

Table of Contents I. Product Description 2 II. Specifi cations 4 III. Before Installing 5 IV. Locating The Boiler 5 V. Mounting The Boiler 7 VI. Air For Ventilation 10 VII. Venting 12 A. Vent System Design 12 B. Removing An Existing Boiler From Common Chimney 19 C. Assembly of Crown 60/100 Concentric Venting 20 D. Assembly of Crown 80/125 Concentric Venting 24 E. Condensate Trap and Drain Line 33 VIII. Gas Piping 34 IX.

Summary of the content on the page No. 4

I Product Description The MWC Series are gas fi red condensing boilers designed for use in forced hot water heating systems requiring supply water temperatures of 176F or less and return water temperatures greater than 86F. The primary heat exchanger is a copper water tube design. Additional heat is extracted from the fl ue gas in a stainless steel secondary heat exchanger located down stream of the inducer. These boilers include a built in circulator, expansion tank, and automatic air vent. I

Summary of the content on the page No. 5

Figure 1.1: MWC Boiler Principle Components 3

Summary of the content on the page No. 6

II Specifi cations Figure 2.1: General Confi guration Table 2.2: Ratings MINIMUM INPUT (BTU/ DHW Output (GPM) D.O.E. MAX. hr) IBR NET HEATING AFUE MODEL* APPLICATION INPUT RATING CAPY. (%) (BTU/hr) (BTU/hr) HEATING DHW 77F Rise 90F Rise (BTU/hr) MWC116E*T Combi 116,000 75,000 49,500 102,000 89,000 85.0 2.67 2.25 MWC116E*L Heat Only 116,000 75,000 N/A 102,000 89,000 85.0 N/A N/A * Insert suffi x “N” for natural gas and “L” for propane. Ratings are the same for both fuels (Example: MWC116ENT den

Summary of the content on the page No. 7

III Before Installing 1) Safe, reliable operation of this boiler depends upon installation by a professional heating contractor in strict accordance with this manual and the authority having jurisdiction. • In the absence of an authority having jurisdiction, installation must be in accordance with this manual and the National Fuel Gas Code, ANSI Z223.1./NFPA 54 and/or CAN/CSA B 149.1 Natural Gas and Propane Installation Code. • Where required by the authority having jurisdiction, this instal

Summary of the content on the page No. 8

Clearance From Hot Water Pipes To Combustibles = 1” Figure 4.1: Clearances To Combustible Or Non-combustible Material 6

Summary of the content on the page No. 9

V Mounting The Boiler CAUTION This boiler weighs approximately 110 pounds: • Two people are required to safely lift this boiler onto the wall mounting hook. • Make sure that wall mounting hook is anchored to a structure capable of supporting the weight of the boiler and attached piping when fi lled with water. Jurisdictions in areas subject to earthquakes may have special requirements for supporting this boiler. These local requirements take precedence over the requirements shown below. Mount

Summary of the content on the page No. 10

Figure 5.1 Wall Mounting Hole Locations 8

Summary of the content on the page No. 11

Figure 5.2 Boiler Mounting 9

Summary of the content on the page No. 12

VI Air for Ventilation WARNING Outdoor combustion air must be piped to the air intake. Never pipe combustion air from areas containing contaminates such as areas where swimming pool chemicals are stored. Contaminated combustion air will damage the boiler and may cause property damage, personal injury or loss of life. Air for combustion and ventilation, of the National Flue Gas Code, ANSI Z223.1/NFPA 54 CAN/CSA B 149.1 Natural Gas and Propane Installation Code, or applicable provisions of th

Summary of the content on the page No. 13

Figure 6.1: Boiler Installed In A Confi ned Space, Ventilation Air From Inside Step 2a (contd.) • If the total volume of both the boiler room and the room to which the openings connect is less than 50 cubic feet per 1000 BTU/hr of total appliance input, install a pair of identical openings into a third room. Connect additional rooms with openings until the total volume of all rooms is at least 50 cubic feet per 1000 BTU/hr of input. • The “free area” of an opening takes into account the block

Summary of the content on the page No. 14

VII Venting WARNING Failure to vent this boiler in accordance with these instructions could cause fl ue gas to enter the building resulting in severe property damage, personal injury, or death: • Do not attempt to vent this boiler with galvanized, PVC, or any other vent components not listed in Table 7.3. • Do not obtain combustion air from within the building. • Do not install a barometric damper or drafthood on this boiler. CAUTION Moisture and ice may form on the surfaces around the vent t

Summary of the content on the page No. 15

2 (contd.) Example: A 60/100mm concentric vent system is planned for a horizontally vented MWC116 which has the following components: • 60/100mm Elbow Adaptor (supplied with the boiler) • 1 ft Straight Pipe • 90 elbow • Uncut Terminal Section (supplied with the boiler) The Vent Option #2 column in Table 7.1 describes a horizontal direct vent system using 60/100mm concentric vent pipe. From this column, we see that a MWC116 may have a vent length of up to 8ft- 10in. The 60/100 Elbow Adaptor

Summary of the content on the page No. 16

Table 7.1: Summary Of Horizontal Venting Options VENT OPTION # 1 2 3 4 RESERVED CLASSIFICATION USED IN THIS HORIZONTAL HORIZONTAL HORIZONTAL FOR FUTURE MANUAL CONCENTRIC CONCENTRIC CONCENTRIC USE ILLUSTRATED IN FIGURE 7.2 7.2 7.2 VENT PIPE PENETRATION WALL WALL WALL THROUGH STRUCTURE 60/100 mm 60/100 mm 80/125 mm VENT PIPE SIZE CONCENTRIC CONCENTRIC CONCENTRIC INLET AIR ORIFICE SIZE 82mm Not Used 82mm MAX. VENT LENGTH 25in 8ft - 10in 27ft - 10in MIN. VENT LENGTH 6in 26in 6in CROWN CROWN

Summary of the content on the page No. 17

Table 7.3a: Crown Concentric 60/100 Vent Components (Vent Options 1,2) USED ON CROWN PN DESCRIPTION SIZE VENT COMMENTS OPTION # 340509 60/100mm ELBOW ADAPTOR 60/100mm 1,2 INCLUDED WITH STANDARD BOILER 340503 60/100mm STRAIGHT ADAPTOR 60/100mm 2 OPTIONAL 230520 TERMINAL SECTION 60/100mm 1,2 INCLUDED WITH STANDARD BOILER 230522 WALL GROMMET 60/100mm 1,2 INCLUDED WITH STANDARD BOILER 230505 39” STRAIGHT 60/100mm 2 OPTIONAL - MAY NOT BE CUT 230504 78” STRAIGHT 60/100mm 2 OPTIONAL - MAY NOT BE CUT

Summary of the content on the page No. 18

Figure 7.4a: Location Of Vent Terminal Relative To Windows, Doors, Grade Figure 7.4b: Location Of Vent Terminal Relative To Meters And Forced Air Inlets Figure 7.4c: Positioning Vent Terminal Under Overhangs 16

Summary of the content on the page No. 19

t able 7.5: Vent/ air Intake Fitting Equivalent length VENT FITTING EQUIVALENT LENGTH (ft) 60/100mm 90° CONCENTRIC ELBOW 4.5 60/100mm 45° CONCENTRIC ELBOW 4.0 80/125mm 90° CONCENTRIC ELBOW 8.5 80/125mm 90° SWEEP CONCENTRIC ELBOW 5.5 80/125mm 45° CONCENTRIC ELBOW 3.0 80/125mm 90° CONCENTRIC SUPPORT ELBOW 8.5 6) Permitted Terminals for Vertical Venting - Use Crown PN 230532 with the appropriate flashing (Table 7.3b) 7) Vertical Vent Terminal Locations (Vent Option 5) - Observe the following limit

Summary of the content on the page No. 20

Figure 7.7: Vertical Concentric Vent System (Vent Option 5) 18


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