ECR International 075 97gb, Installation, Operation & Maintenance Manual

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Table 3 - Combustion Air and Vent Piping Length
For Example: Boiler can be installed on outside wall and
vented with 1-90° elbow and 1 ft (0.30 m) of vent pipe.
6.1 General
This boiler requires a dedicated direct vent system.
Install combustion air and vent piping in accordance
with these instructions, authority having jurisdiction,
and:
USA - National Fuel Gas Code, ANSI 223.1/NFPA 54. •
Canada - Natural Gas and Propane Installation Code, •
CAN/CSA B149.1
Vent connections serving appliances vented by natural draft
shall not be connected into any portion of mechanical draft
systems operating under positive pressure.
Install vent system in accordance with these instructions.
6.2 Removal of Existing Boiler From Common
Vent System
When existing boiler is removed from common venting
system, common venting system is likely to be too large for
proper venting of appliances remaining connected to it.
After removal of existing boiler, following steps shall
be followed with each appliance remaining connected to
common venting system placed in operation, while other
appliances remaining connected to common venting system
are not in operation:
Seal any unused openings in common venting system. •
Visually inspect venting system for proper size and •
horizontal pitch. Determine there is no blockage or
restrictions, leakage, corrosion and other defi ciencies
which could cause an unsafe condition.
When practical, close all building doors, windows, and
•
all doors between space in which appliances remaining
connected to common venting system are located and
other spaces of building. Turn on clothes dryer and any
appliance not connected to common venting system.
Turn on exhaust fans, such as range hoods and bath-
room exhaust so they will operate at maximum speed.
Do not operate summer exhaust fan. Close fi replace
dampers.
Turn on appliance being inspected. Follow lighting
•
instructions. Adjust thermostat so appliances will operate
continuously.
Test for spillage at draft hood relief opening after 5
•
minutes of main burner operation. Use fl ame of match or
candle, smoke from cigarette, cigar or pipe.
Determine each appliance remaining connected to
•
common venting system properly vents when tested
as outlined above. Then return doors, windows,
exhaust fans and any other gas-burning appliance to
6 - COMBUSTION AIR AND VENT PIPING
their previous condition of use.
Any improper operation of common venting system
•
should be corrected so installation conforms with National
Fuel Code, ANSI Z223.1/NFPA 54 and/or Natural Gas
and Propane Installation Code, CAN/CSA B149.1. When
re-sizing any portion of common venting system, com-
mon venting system should be re-sized to approach
minimum size as determined using appropriate tables in
Chapter 13 of the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 and/or Natural Gas and Propane Installation
Code, CAN/CSA B149.1.
6.3 Materials
See Table 4 •
Combustion Air and Vent Pipe Equivalent
Length
2” Pipe 3” Pipe
Minimum 6 ft (1.8 m) 6 ft (1.8 m)
Maximum 60 ft (18.3 m) 100 ft (30.4 m)
1 - 90° elbow = 5 ft (1.6 m)
1 - 45° elbow = 3.5 ft (1.1 m)
1- 2" x 3" adapter = 0 ft (0 m)
Note: Concentric Vent Kit=5 ft (1.6m) equivalent
length