13
110331-07 - 8/23
PHTM II
Combi Installation, Operating & Service Instructions
1. If using existing vent system to vent new
boiler, check the following:
A. Material and manufacturer are listed in
Section 7 General Venting.
B. Proper size and length per Table 7-7.
C. Appropriate supports to prevent sagging and
vertical movement.
D. Minimum slope per Section 7 guidelines.
E. Terminations and their location comply with
Section 7 General Venting, Section 8 Sidewall
Direct Venting, or Section 9 Vertical Direct
Venting.
F. Seals and connections per Section 7
General Venting and/or vent system
manufacturer's instructions. System must be
tested per procedure Removing Existing
Boiler in this section.
G. Vent pipe and components should be
replaced if there is any question to their
integrity.
Removing Existing Boiler
5
Locating Boiler
(continued)
DANGER
Asphyxiation Hazard.
Do not vent this boiler into a common vent with
any other appliance. Connecting this boiler to a
common vent will cause products of combustion
and/or carbon monoxide to enter living space
as well as appliance malfunction, resulting in
severe personal injury, death or substantial
property damage.
!
When an existing boiler is removed from a
common venting system, the common venting
system is likely to be too large for proper venting
of the appliances remaining connected to it.
At the time of removal of an existing boiler, the
following steps shall be followed with each
appliance remaining connected to the common
venting system placed in operation, while the
other appliances remaining connected to the
common venting system are not in operation:
1. Seal any unused openings in the common venting
system.
2. Visually inspect the venting system for proper size
and horizontal pitch and determine there is no
blockage or restriction, leakage, corrosion, and
other deficiencies which could cause an unsafe
condition.
3. Insofar as is practical, close all building doors
and windows and all doors between the space in
which the appliances remaining connected to the
common venting system are located and other
spaces of the building. Turn on clothes dryers
and any appliance not connected to the common
venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they
will operate at maxi mum speed. Do not operate a
summer exhaust fan. Close fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the Lighting (or Operating) Instructions.
Adjust thermo stat so appliance will operate
continuously.
5. Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use
the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance
remain ing connected to the common venting
system properly vents when tested as outlined
above, return doors, win dows, exhaust fans,
fireplace dampers and any other gas-burning
appliance to their previous condition of use.
7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the
National Fuel Gas Code,
ANSI
Z223.1/NFPA 54. When resizing any portion
of the common venting system, the common
venting system should be resized to approach
the minimum size as determined using the
appropriate tables in Chapter 13 of the
National
Fuel Gas Code,
ANSI Z223.1/NFPA 54.
Residential Garage Installation
1. If installing in residential garage or adjacent
space open to garage that is not part of living
space:
A. Burner and burner ignition devices must be a
minimum of 18 in. (46 cm) above floor.
B. Boiler must be located and/or protected to
prevent damage from moving vehicle.
2. Follow local codes for locating a residential boiler
in a garage or
National Fuel Gas Code, ANSI
Z223.1/NFPA 54.
in absence of such codes.
Connecting New Boiler to Existing Vent
System
WARNING
Asphyxiation Hazard.
If any of below conditions cannot be met,
existing vent system must be updated or
replaced. Failure to follow these instructions
could cause products of combustion and/ or
carbon monoxide to enter living space, resulting
in severe personal injury, death or substantial
property damage.
!
