Weil McLain Boiler GV Series 3 User Manual

Water Boiler — Series 3 & 4  
Venting Supplement  
Z-Vent II  
Special gas vent system vent and combustion air supplement  
Z-Flex®, Inc. Z-Vent II AL29-4C® Stainless Steel Special Gas Vent System may be used in new  
installations of GV-3 through GV-6 boilers.  
Hazard definitions  
The following defined terms are used throughout these Instructions to bring attention to the  
presence of hazards of various risk levels or to important information concerning the life of  
the product.  
Indicates presence of hazards that will cause severe personal injury, death  
or substantial property damage.  
Indicates presence of hazards that can cause severe personal injury, death  
or substantial property damage.  
Indicates presence of hazards that will or can cause minor personal injury  
or property damage.  
Indicates special instructions on installation, operation or maintenance that  
are important but not related to personal injury or property damage.  
To the installer:  
This Venting Supplement must only be used by a qualified installer/service  
technician. Read these Instructions completely before beginning the  
installation.Failure to follow all instructions can cause severe personal injury,  
death or substantial property damage.  
To install a new vent system follow instructions in:  
This Venting Supplement.  
GV Boilers Vent/Air Intake Termination Assembly Instructions, if  
using Weil-McLain Vent/Air Intake Termination Kit. — OR —  
GV Water Boiler Series 3 & 4 Direct Vent Through-Roof or Through-  
Unused-Chimney Venting Supplement, if using Weil-McLain  
Through-Roof or Through-Unused-Chimney Termination Kit.  
Z-Vent II manufacturer’s instructions supplied with vent material.  
For installations above 5,500 feet use only direct vent (ducted combustion  
air) when sidewall venting. All of the vertical (through-roof or through-  
unused-chimney) methods in this Venting Supplement are acceptable and  
can result in severe personal injury, death or substantial property damage  
if ignored.  
Part number 550-110-266/0601  
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Vent termination  
Venting method definitions  
Direct vent — Uses outside combustion air with  
combustion air connector piping sealed at all joints and  
seams. Also known as “sealed combustion.  
Non-Direct vent — Uses inside combustion air with no  
combustion air connector piping.  
terminate more than 4 feet below or to side of all doors or windows.  
8. Vent must terminate more than 1 foot above grade or anticipated snow  
line. In addition, vent termination must be at least 7 feet above public  
walkway and 3 feet above any forced air intake within 10 feet. Stay well  
away from trees, shrubs, and decorative items. Site conditions may  
dictate greater clearances. See Figure 1.  
9. Vent must terminate at least 4 feet horizontally, and in no case above  
or below, unless a 4 foot horizontal distance is maintained,from electric  
meters, gas meters, regulators, relief valves, and other equipment.  
10. Locate or guard vent to prevent condensate from damaging exterior  
finishes.  
11. Do not extend exposed vent pipe outside of building. Condensate could  
freeze and block vent pipe.  
12. Vent must terminate at least 6 feet away from adjacent walls.  
13. Do not terminate vent closer than 5 feet below roof overhang.  
14. Do not terminate vent above any door or window. Condensate can  
freeze, causing ice formations.  
15. Do not use existing chimney as raceway if another appliance or fireplace  
is vented into or through chimney.  
Properly locate vent termination  
Follow instructions on this page  
when determining vent location to  
avoid possibility of severe personal  
injury, death or substantial property  
damage.  
1. When using direct vent method — Refer to separate  
instructions packed with Weil-McLain direct vent  
termination kit and vent pipe manufacturer's  
instructions for additional locations.  
2. For location of non-direct vent vertical termination,  
see vent pipe manufacturer's instructions.  
3. Gases will form white plume in winter. Plume could  
obstruct window view.  
4. Prevailing winds could cause freezing of condensate  
and water/ice buildup on building, plants or roof.  
5. Locate or guard vent to prevent accidental contact  
by people or pets.  
6. Do not terminate vent in window well, stairwell,  
alcove, courtyard, or other recessed areas.  
16. Do not connect:  
Any other appliance to vent pipe.  
Multiple boilers to a common vent pipe.  
17. Do not wrap or insulate vent pipe and fittings.  
18. Canadian installations — See B149.1 or B149.2 Installation Code.  
19.  
A gas vent extending through an exterior wall shall not  
terminate adjacent to the wall or below building  
extensions such as eaves, parapets, balconies or decks.  
Failure to comply could result in severe personal injury,  
death or substantial property damage.  
7. Non-Direct vent installations only — Vent must  
Figure 1  
Vent termination locations  
Forced  
air intake  
3 feet  
If within 10 feet  
1 foot  
7 feet  
1 ft  
26607  
Snow  
26608  
Part number 550-110-266/0601  
3
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Installation  
Pre-installation planning  
1. Follow national, state, local or provincial codes or  
regulations when venting GV boiler.  
2. Choose vent method from those shown on page 5.  
3. Select vent run components from Table 2. Table 3  
states maximum vent run lengths and number of  
elbows. Do not exceed data in Table 3. See Figure 2  
for slightly reduced boiler output.  
4. If installing with direct vent method, use same maximum run length  
and number of elbows from step 2.Vent and combustion air connector  
piping configurations must match. Use suitable 3" material for  
combustion air connector piping, such as:  
Dryer vent  
Galvanized steel  
PVC (3" I.D.)  
5. Refer to vent termination WARNING, item 19 on page 3.  
Table 2  
Parts list  
Z-Flex®, Inc.  
Description  
Part Number (Note 1)  
GV starter tee  
SVEVST03  
SVSTPX03  
SVEEWC0345  
GV termination coupling  
45o elbow  
90o elbow  
SVEEWC0390  
SVEPWC03.5  
SVEPWC0301  
SVEPWC0302  
SVEPWC0303  
SVEPWC0304  
SVEPWC0305  
SVSLBX03  
6" pipe  
1' pipe  
2' pipe  
3' pipe  
4' pipe  
5' pipe  
Locking band  
Weil-McLain Vent/Air Intake Termination Kit  
382-200-430 (Note 2)  
Weil-McLain Through-Roof or Through-Unused-Chimney Termination Kit  
382-200-435 (Note 2)  
Notes  
1. Z-Flex®, Inc. part number. Parts available through Z-Flex®, Inc.  
2. Weil-McLain part number. Parts available through Weil-McLain distributor.  
Table 3  
Figure 2  
Boiler output  
Vent and combustion air connector piping  
lengths and number of elbows  
100  
GV-3  
GV-4  
GV-5  
99  
98  
97  
96  
95  
Maximum vent  
Total number of elbows  
length (feet)  
0
2
3
4
5
6
7
8
GV-6  
GV-3 thru GV-5 100 80 70 60 50 40 30 20  
GV-6 80 60 50 40 30 20 10 --  
0
20  
40  
60  
80  
100  
Total equivalent length (feet) of vent  
(from boiler to vent termination)  
Part number 550-110-266/0601  
4
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Installation  
continued  
For altitudes more than 5,500 feet above sea level — Do not use non-direct vent through sidewall methods as  
shown in Figures 4 and 6 below. Can cause severe personal injury, death or substantial property damage if ignored.  
Select vent method  
Figure 3  
GV direct vent through sidewall  
Figure 4  
GV non-direct vent through sidewall (using Weil-  
(using Weil-McLain Vent/Air Intake Termination Kit)  
McLain Vent/Air Intake Termination Kit) (See WARNING above.)  
Slope vent pipe downward, toward  
boiler, minimum ¼” per foot.  
Vent pipe  
Slope  
Slope  
Slope vent pipe  
downward, toward  
boiler, minimum ¼”  
per foot.  
Air pipe  
Z-Vent II  
vent starter tee  
Z-Vent II  
vent starter tee  
26602  
26601  
Figure 5  
GV direct vent (using Weil-McLain  
Figure 6  
GV non-direct vent  
Figure 7  
GV non-direct vent  
Through-Roof or Through-Unused Chimney  
Termination Kit)  
through sidewall (using termina-  
tion coupling) (See WARNING  
above.)  
through roof (See WARNING  
above.)  
Slope vent pipe  
downward, toward  
boiler, minimum  
¼” per foot.  
Slope vent  
pipe  
downward,  
toward  
boiler,  
minimum  
¼” per foot.  
Z-Vent II  
vent starter tee  
Z-Vent II  
vent starter tee  
26604  
26605b  
Z-Vent II  
vent starter tee  
26603  
Part number 550-110-266/0601  
5
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Installation — assembly  
Connect vent starter tee to boiler  
Follow the instructions in the GV Boiler Manual to connect the vent starter tee to the boiler.  
Construct vent and optional combustion air run  
Follow vent pipe manufacturer's instructions for sealing the vent. Vent and  
combustion air connector piping must be sealed gas-tight to prevent  
possibility of flue gas spillage and carbon monoxide emissions, resulting in  
severe personal injury or death.  
1. Follow Z-Vent II manufacturer's instructions to construct vent run and for methods of  
supporting vent runs.  
Clean joints before sealing. See vent pipe manufacturer's instructions to clean joints.  
Use their specified sealant (maximum 250 °F flue temperature). Do not use screws.  
Do not mix types or manufacturers of vent materials.  
Maintain minimum one-inch clearance from combustible materials to vent pipe; 0"  
clearance for noncombustible materials.  
Install vent pipe with seams on top of vent runs.  
If needed, male end of vent pipe may be cut to provide correct length. See vent pipe  
manufacturer's instructions for use.  
2. If installing with direct vent through sidewall method, use instructions provided with  
Weil-McLain Vent/Air Intake Termination Kit. See Figure 3 on page 5.  
Connect vent run to termination  
Venting through sidewall  
1. If using Weil-McLain Vent/Air Intake Termination Kit, see instructions provided in that  
kit. Applies to direct (Figure 3, page 5) or non-direct vent (Figure 4, page 5) method.  
2. If using non-direct method with termination coupling only, see Figures 8 and 9.  
If passing through noncombustible wall, provide hole diameter large enough to insert  
the slip connector through. Sleeve and spacers are not required.  
3. Maintain minimum one-inch clearance from combustible materials to vent pipe; 0"  
clearance for noncombustible materials.  
4. Refer to vent termination WARNING, item 19 on page 3.  
Venting through existing chimney or roof  
1. Direct vent method — follow instructions supplied in Weil-McLain Through-Roof or  
Through-Unused-Chimney Termination Kit to assemble termination.  
2. Non-Direct vent method (only through the roof, not through chimney):  
Vent pipe must extend through roof flashing, jacket or thimble. See Figure 10.  
Vent may pass through floor, inside wall or concealed space when installed according  
to vent pipe manufacturer's instructions.  
2. Maintain minimum one-inch clearance from combustible materials to vent pipe.  
Part number 550-110-266/0601  
6
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Installation — assembly  
continued  
Figure 8  
Sidewall termination installation (non-direct venting)  
¼" to ¾" between stop  
on termination and  
metal plate  
Spacers (2)  
(to support and  
center vent in  
sleeve)  
Pipe section  
Metal plate  
4" galvanized sleeve  
(through 4¹⁄₈" hole for  
combustible wall)  
Metal plate  
Spacers (2)  
(to support and  
center vent in  
sleeve)  
Pipe section  
Sealant  
Sealant  
26609  
Termination coupling  
Figure 9  
Non-direct vent through sidewall  
Figure 10 Non-direct vent through roof  
Follow Z-Vent II manufacturer’s instructions for proper  
installation of vent runs, including slope and support.  
(using termination coupling) Follow Z-Vent II  
manufacturer’s instructions for proper installation of  
vent runs, including slope and support.  
Z-Vent II  
Z-Vent II  
vent starter tee  
26605b  
vent starter tee  
26604b  
Part number 550-110-266/0601  
7
 
GOLD GV Series 3 & 4 — Z-Vent II Venting Supplement  
Installation — assembly  
continued  
Figure 11 Installation of condensate tubing  
Finish the vent installation  
Installing condensate tubing  
1. See Figure 11 to install condensate tubing (provided  
by others). Use condensate pump if floor drain is  
higher than condensate drain on boiler.  
Z-Vent II  
vent starter tee  
If required:  
use a low-profile pump — OR —  
set boiler on foundation (see GV Boiler  
Manual) to allow gravity flow to discharge.  
2. Size pump in gal/hr (boiler model):  
0.78 (GV-3)  
1.17 (GV-4)  
1.56 (GV-5)  
1.95 (GV-6)  
5/8" O.D. tubing,  
provided by  
others  
26606  
Refer to pump manufacturer's instructions. Drain  
to a non-freezing area.  
If vent pipe or combustion air pipe must be reassembled  
When vent pipe or combustion air pipe is disconnected for any reason, it must be reassembled and resealed  
according to thisVenting Supplement, the direct vent termination kit instructions and the vent pipe manufacturer's  
instructions.  
Sealant recommended by vent pipe manufacturer must be used as indicated in their instructions.  
Vent and combustion air connector piping must be sealed gas-tight to prevent possibility of  
flue gas spillage and carbon monoxide emissions, resulting in severe personal injury or death.  
Part number 550-110-266/0601  
8
 

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