Ultra Boiler Manual

Part number 550-100-440/0122
18
  
 (cont.)
Figure 12 
Ultra model
Vent or air
pipe size
• Maximum equivalent feet of piping
• Number of elbows allowed at these lengths
(All applications include allowance for the terminations.)
Direct vent
Sidewall
with
Weil-McLain
vent/air cap
Direct vent
Sidewall with
separate pipes
— or —
Direct exhaust
(sidewall or vertical)
3” Concentric
Sidewall or Vertical
DO NOT use CPVC
or ABS
[Note 1]
4” Concentric
Sidewall or Vertical
DO NOT use CPVC
or ABS)
[Note 1]
Direct vent
Vertical
with separate
pipes
Direct vent
Vertical exhaust
Sidewall air
Direct vent
only
Direct vent or
Direct exhaust
Direct vent
only
Direct vent
only
Direct vent
only
Direct vent
only
Length Ells Length Ells Length Ells Length Ells Length Ells Length Ells
-80/105
2” * 100 (ab) 2 100 (a) 2 100 (ab) 1 NA 100 (a) 1 100 (a) 1
3” 100 2 100 2 100 1 NA 100 1 100 1
-155 3” 100 2 100 2 100 1 NA 100 1 100 1
-230
3” 30 (c) 2 30 (c) 2 30 (c) 1 30 (c)(d) 1 30 (c) 1 30 (c) 1
4” 100 (d) 2 100 2 70 (d) 1 100 1 100 1 100 1
-299 4” 100 2 100 2 70 (d) 1 100 1 100 1 100 1
-399 4” 100 2 100 2 NA 100 1 100 1 100 1
Note 1:
IPEX 3” and 4” PVC concentric vent kits can be used with standard PVC pipe, ttings and cement (ANSI/ASTM D1785)
except where ULC S636 compliance is required. For ULC S636 compliance, all pipe, ttings and cement must be IPEX
System 636. For UL 1738 compliance all pipe, ttings and cement must be IPEX System 1738. When using IPEX kits, use
only IPEX product code 196006 for 3” venting or IPEX product code 196021 for 4” venting.
Contact WM Technologies for ordering information and availability of Weil-McLain venting kits.
Polypropylene - Separate pipe and concentric termination by respective manufacturers.
Additional
notes
a —
Use 3”x2” reducer at boiler
b — Use 3”x2” reducers at termination
c — Use 4”x3” reducer at boiler
d — Use 4”x3” reducers at termination
* Ultra-80 and 105 boilers installed with 2-inch vent piping automatically derate due to the pressure loss in the vent and air
piping. e derate ranges up to 10% for the Ultra-80 at 100 feet or 15% for the Ultra-105 at 100 feet.
Equivalent feet for elbows — deduct from maximum equivalent length of pip-
ing:
PVC • 7 feet per for each 4-inch elbow & 2 or 3-inch 90° long-radius or 45° elbow
• 16 feet for each 2- or 3-inch short-radius elbow
PP • Centrotherm 3” = 6’ 4” = 20’ Duravent 3” = 17’ 4” = 22’
Stainless steel (AL29-4C) vent pipe
install an adapter at the boiler for all applications. Also install
an adapter at the termination unless using separate-pipe
termination.