3 General venting
Requirements for installation in Canada
1.Installations must be made with a vent pipe system certified to
IPEX is an approved vent manufacturer in Canada supplying vent material listed to
2.The first three (3) feet of plastic vent pipe from the appliance flue outlet must be readily accessible for visual inspection.
3.The components of the certified vent system must not be interchanged with other vent systems or unlisted pipe/fittings.
4.The 2" and 3" Concentric Vent Kits available from Lochinvar (see Section 4 – Sidewall Termination – Optional Concentric Vent) and the 2" and 3" Concentric Vent Kits available from IPEX are approved for use on the Knight wall mount boiler. Both kits are listed to the
Sizing
The Knight wall mount boiler uses model specific combustion air intake and vent piping sizes as detailed in Table 3A below.
Table 3A Maximum Combustion Air and Vent Piping Lengths
Model | 2" Max Vent/Air | 3" Max Vent/Air | ||
51 |
| 40 feet | 100 feet | |
81 |
| 40 feet | 100 feet | |
106 |
| 40 feet | 100 feet | |
151 |
| N/A | 100 feet | |
211 |
| N/A | 100 feet | |
|
| Increasing or decreasing combustion air or | ||
NOTICE | ||||
vent piping sizes is not authorized. | ||||
Installation & Operation Manual
Minimum / Maximum allowable combustion air and vent piping lengths are as follows:
Combustion Air = 12 equivalent feet minimum / 100 equivalent feet maximum
Vent = 12 equivalent feet minimum / 100 equivalent feet maximum
When determining equivalent combustion air and vent length, add 5 feet for each 90° elbow and 3 feet for each 45° elbow.
EXAMPLE: 20 feet of PVC pipe + (4) 90° elbows + (2) 45° elbows + (1) concentric vent kit (CVK3003) = 49 equivalent feet of piping.
NOTICE | The appliance output rating will reduce |
by up to 1.5% for each 25 feet of vent | |
| length. |
Table 3B Concentric Vent Kit Equivalent Vent Lengths
Model | Kit Number | Equivalent Vent |
|
| Length |
51 - 106 | CVK3008 | 3 feet |
|
|
|
51 - 211 | CVK3003 | 3 feet |
|
|
|
16 
