ICP *9MPT050F12 Installation instruction - Warning
440 01 2021 01
10
1000 Btu / hr
21 ft
3
(
I
other
)
Volume
other
=
ACH
2.
For fan--assisted appliances such as this furnace,
1000 Btu / hr
15 ft
3
(
I
fan
)
Volume
fan
=
ACH
If:
I
other
= combined input of all other than fan--assisted
appliances in Btu/hr
I
fan
= combined input of all fan--assisted appliances in Btu/hr
ACH = air changes per hour (ACH shall not exceed 0.60.)
The following requirements apply to the Standard Method and to
the Known Air Infiltration Rate Method.
·
Adjoining rooms can be considered part of a space, if there
are no closable doors between rooms.
·
An attic or crawl space may be considered a space that freely
communicates with the outdoors provided there are adequate
ventilation openings directly to outdoors. Openings MUST re-
main open and NOT have any means of being closed off. Ven-
tilation openings to outdoors MUST be at least 1 square inch
of free area per 4,000 BTUH of total input rating for all gas ap-
pliances in the space.
·
Combining spaces on the same floor level. Each opening
shall have a free area of at least 1² 2/1,000 BTUH (2,000
mm2/kW) of the total input rating of all gas appliances in the
space, but not less than 100 in2 (0.06 m2). Once opening
shall commence within 12² (300 mm) of the ceiling and the
second opening shall commence within 12² (300 mm) of the
floor. The minimum dimension of air openings shall be at least
3² (80 mm).
·
Combining spaces on different floor levels. The volumes of
spaces on different floor levels shall be considered communi-
cating spaces if connected by one or more permanent open-
ings in doors or floors having a free area of at least 2² 2/1,000
Btuh (4,400 mm2/kW) of total input rating of all gas ap-
pliances.
·
In spaces that use the Indoor Combustion Air Method, in-
filtration should be adequate to provide air for combustion,
ventilation and dilution of flue gases. However, in buildings
with unusually tight construction, additional air MUST be pro-
vided using the methods described in section titled Outdoor
Combustion Air Method:
·
Unusually tight construction is defined as Construction with
1. Walls and ceilings exposed to the outdoors have a con-
tinuous, sealed vapor barrier. Openings are gasketed or
sealed and
2. Doors and openable windows are weather stripped and
3. Other openings are caulked or sealed. These include
joints around window and door frames, between sole
plates and floors, between wall--ceiling joints, between
wall panels, at penetrations for plumbing, electrical and
gas lines, etc.
Ventilation Air
Some provincial codes and local municipalities require ventilation
or make--up air be brought into the conditioned space as replace-
ment air. Whichever method is used, the mixed return air tempera-
ture across the heat exchanger MUST not fall below 60° so that
flue gases will not condense excessively in the heat exchanger.
Excessive condensation will shorten the life of the heat exchanger
and possibly void your warranty.
Venting and Combustion Air Check
The following information is supplied to allow the installer to make
adjustments to the setup of existing appliances, IF REQUIRED,
based on good trade practices, local codes, and good judgement
of the installer. Manufacturer does NOT take responsibility for
modifications made to existing equipment.
NOTE: If this installation replaces an existing furnace from a
commonly vented system, the original venting system may no lon-
ger be sized to properly vent the attached appliances. An improp-
erly sized venting system may cause the formation of condensate
in the vent and the leakage or spillage of vent gases. To make sure
there is adequate combustion air for all appliances, MAKE THE
FOLLOWING CHECK.
CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each
appliance connected to the venting system being placed
into operation, could result in carbon monoxide
poisoning or death:
The following steps shall be followed for each appliance
connected to the venting system being placed into
operation, while all other appliances connected to the
venting system are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal
pitch, as required in the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 or CSA B149.1, Natural Gas and Pro-
pane Installation Code and these instructions. Determine
that there is no blockage or restriction, leakage, corrosion
and other deficiencies which could cause an unsafe con-
dition.
3. As far as practical, close all building doors and windows
and all doors between the space in which the appliance(s)
connected to the venting system are located and other
spaces of the building.
4. Close fireplace dampers.
5. Turn on clothes dryers and any appliance not connected
to the venting system. Turn on any exhaust fans, such as
range hoods and bathroom exhausts, so they are operat-
ing at maximum speed. Do not operate a summer exhaust
fan.
6. Follow the lighting instructions. Place the appliance being
inspected into operation. Adjust the thermostat so ap-
pliance is operating continuously.
7. Test for spillage from draft hood equipped appliances at
the draft hood relief opening after 5 minutes of main burner
operation. Use the flame of a match or candle. (Figure 6)
8. If improper venting is observed, during any of the above
tests, the venting system must be corrected in accor-
dance with the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or CSA B149.1, Natural Gas and
Propane Installation Code.
9. After it has been determined that each appliance con-
nected to the venting system properly vents when tested
as outlined above, return doors, windows, exhaust fans,
fireplace dampers and any other gas--fired burning ap-
pliance to their previous conditions of use.
!