Installation Instructions

16
Exhaust vent (Stainless Steel Vent)
This is a Category IV appliance and must be vented accordingly. The vent system must be sealed
airtight. All seams and joints without gaskets must be sealed with high heat resistant silicone sealant
or UL listed aluminum adhesive tape having a minimum temperature rating of 160° F. For best results,
a vent system should be as short and straight as possible.
• The micro boiler is a Category IV appliance and must be vented accordingly with any 4” vent ap-
proved for use with Category III/IV or Special BH type gas vent.
• The manufacturer recommends the NovaVent line. However, the following are also UL listed man-
ufactures: ProTech Systems Inc.(FasNSeal), Metal-Fab Inc., and Heat-Fab Inc. (Saf-T-Vent).
• Follow the vent pipe manufacturer’s instructions when installing the vent pipe.
• The maximum length of exhaust vent piping must not exceed 100 ft. (30.5 m) (deducting 5 ft (1.5
m) for each elbow used in the venting system). Do not use more than 5 elbows.
• When the horizontal vent run exceeds 5 ft. (1.5 m), support the vent run at 3 ft. (0.9 m) intervals
with overhead hangers.
Diameter Max. No. of Elbows
54 in. (102 mm)
Max. V cal and Horizontal (Total) Vent Length
100
(30.5 m )
*For each elbow added, deduct 5 (1.5 m) from max. vent length.
No. of Elbows
0
1
100
(30.5 m)
Max. V
cal or Horizontal Vent Length
2
95
(29.0 m)
5
90 (27.4 m)
75
(22.9 m)
Excludes vent terminators, termina elbows, or rain caps.