NTI WF200 Installation And Operation Manual
Visit us
online
WF200 – Wood Fired Boiler
INSTALLATION AND OPERATION MANUAL
Version Date: 2018-05-07
SAVE THESE INSTRUCTIONS
TABLE OF CONTENTS
HAZARD SYMBOLS AND DEFINITIONS
Danger Sign: Indicates a hazardous situation which, if not avoided, will
result in serious injury or death.
Warning Sign: Indicates a hazardous situation which, if not avoided,
could result in serious injury or death.
Caution Sign plus Safety Alert Symbol: Indicates a hazardous situation
which, if not avoided, could result in minor or moderate injury.
Caution Sign without Safety Alert Symbol: Indicates a hazardous
situation which, if not avoided, could result in property damage.
Notice Sign: Indicates a hazardous situation which, if not avoided,
could result in property damage.
This Boiler must be installed by a licensed and trained Heating
Technician or the Warranty is Void. Failure to properly install this
unit may result in property damage, serious injury to occupants, or possibly death.
30 Stonegate Dr.,
Saint John, NB,
E2H 0A4
NTI # 86241
2
Installation and Operation Manual WF200
1.0 INTRODUCTION
Read Before Proceeding
The installation of your NTI Wood Fired boiler must conform to the requirements of this manual, your local
authority, and the latest edition of CSA standard B365 Installation code for solid-fuel-burning appliances and
equipment.
This document pertains to the correct installation and operation of NTI Wood Fired boiler model WF200. The
instructions detailed in this document supersede any and all previous instructions provided by NTI, written or
otherwise.
Read and understand this entire document prior to proceeding with the installation of the
WF200 Wood Fired boiler. Failure to follow the instructions outlined in this document
will result in property damage, serious injury or death.
Void Warranty - This Boiler must be filled with water at all times, whenever it is
operated, otherwise overheating will occur, damaging the unit (voiding the warranty) and
possibly resulting in fire or explosion.
Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other boiler. Failure to follow instructions may result in serious
injury or death.
Chimney Fires or Runaway Fires
Have a clear and understood plan for handling a chimney fire:
Close all sources of air to the fire (including the draft regulator).
Evacuate the house and call the fire department.
Wet-down combustible materials adjacent to the chimney.
Do not remove flue pipe until fire is completely out.
Do not use the chimney again until it has been inspected and repaired, if necessary.
By following these basic steps you will bring the fire under control. The time it takes to bring it under control
depends upon the amount of fuel in the boiler and the rate at which it is burning at the time it is detected.
User Responsibilities
As the User/Owner of this equipment, you are responsible for ensuring this appliance is operated and maintained
in accordance with these instructions; see Section 7.0 – Installation & Operation Checklist and Section 8.0 –
Annual Maintenance and Inspection.
Installer Responsibilities
As the installing technician it is your responsibility to ensure the installation is performed in accordance with this
instruction manual as well as any applicable local or National installation codes. It is also your responsibility to
inform the User/Owner of their obligation with respect to the above description under “User Responsibilities”.
Failure to follow this warning could result in fire, serious injury, or death.
Failure to properly operate and maintain the boiler, including the smoke pipe and
chimney, may result in property damage, serious injury or death.
3
A
Flush Jacket
B
Domestic Coil
C
Normally Open Zone Valve
V8043D1
D
Relief Valve Tapping
E
Flue
F
Relief Valve Tapping
G
Supply Tapping
H
Damper Motor M847A1031
I
Transformer AT20B1064B
J
Aquastat L4081A1155
K
Pressure & Temperature
Gauge
L
Aquastat L4006B1007
M
Fan Center R8285A1048
N
Transformer AT20B1064B
O
Damper Chain
P
Damper Door
Q
Fire Door
R
Combustion Area
S
Base
T
Return Tapping
U
Low water cut off
Dimensions
A
42” B
37”
C
13½”
D
15¾”
E
8” F 7” G 7”
H
22½”
I
30”
Chamber size
(HxWxD)
18 x 16 x
25.5
Supply
1 ½”
Return
1 ½”
Relief Valve
¾”
Drain
½”
Heating
Surface (sq. Ft)
20
Weight (lbs)
625
Water volume
(Imp. Gal)
43
Tapping provided for
¾” Low water cut-off
Model OEM 170
Safeguard
WF200 Installation and Operation Manual
2.0 SPECIFICATIONS
Parts Diagram
Dimensions
4
Installation and Operation Manual WF200
3.0 BOILER LOCATION
In all cases, the WF200 boiler must be installed indoors in a dry location where the ambient temperature must be
maintained above freezing and below 100F [38C]. All boiler components must be protected from dripping,
spraying water, or rain during operation and servicing. Consider the proximity of system piping, electrical
supply and chimney termination when determining the best boiler location.
Air for Combustion & Ventilation
Protection against depressurization – the WF200 boiler operates on natural draft, therefore the space containing
the boiler must not be susceptible to becoming depressurized. Follow the direction outlined in section 5.1.3 of
CAN/CSA B365, Installation code for solid-fuel-burning appliances and equipment, to determine if a makeup
air system is required.
Ventilation air supply in confined spaces – when installed in an enclosed space, with a volume less than 20% of
the space being heated by the wood fired boiler, the space shall:
a) have a permanent opening or openings for natural air circulation with a minimum net free area of 150 in2;
and
b) be connected to another space or spaces such that the total volume of air available for natural air
circulation is at least 30% of the total volume to be heated by the wood fired boiler.
Clearance to Combustible Material
Place boiler on a non-combustible floor (see Foundation below), observe the minimum clearances to combustible
material listed in Table 3-1 and illustrated in Figure 3-1.
Foundation – The boiler should never be installed on a combustible floor or base. Foundations shall be installed
with the following minimum dimensions (see Figure 3-1):
4 in. thick
Extended 6 in. beyond the boiler sides and back.
Extend 18 in. in front of the boiler
Water or flood damaged components must be replaced immediately with new factoryapproved components as failure to do so may result in fire, serious injury, or death.
A makeup air system need not be installed if a spillage detection and alarm system (e.g. a
carbon monoxide alarm) is installed in accordance with local regulations, or the National
Building Code.
The minimum dimension of any opening as specified in (a) above, shall be no less than 1
in. The lower edge of at least one opening shall be located within 1.5 ft of the floor of the
enclosed space, and the upper edge of at least one opening shall be located within 1.5 ft of
the ceiling of the enclosed space.
Failure to adhere to the installation clearances and restrictions detailed in these
instructions can lead to risk of fire or explosion resulting in property damage, personal
injury or death.
Wood Storage – Maintain a minimum clearance of 5 ft. between the wood boiler and a
woodpile; the space around the boiler should be kept clean and free of litter and wood
residues. Where fans are used in the wood storage area, they should be installed so as not
to create negative pressures in the room where the wood boiler is located.
5
Clearances
Dimensions
Front
Top
1
Sides 2 Rear
Flue Pipe
Minimum
48 in.
6 in.
6 in.
24 in.
18 in.
Recommended
60 in.
36 in.
24 in.
36 in.
18 in.
Notes:
1
Space above boiler shall NOT be used for storage.
2
With hot water coil installed, the coil side requires a minimum of 24 in. clearance.
Figure 3-1 Minimum Clearances to Combustibles
24” or 6”
24”
6”
48”
6”
18”
WF200 Installation and Operation Manual
Table 3-1 Minimum Clearances for Installation and Service
6
Minimum Thickness of Metal used in Chimney Connector
Diameter of Flue Pipe, in.
Minimum Thickness, in.
7-8
0.021
Installation and Operation Manual WF200
4.0 VENTING FLUE GASES
The WF200 Wood Fired boiler shall be safely vented to the outdoors in accordance with these instructions,
CAN/CSA B365, Installation code for solid-fuel-burning appliances and equipment, and the National Building
Code.
Chimney
Only a chimney meeting one of the criteria listed below (a or b) shall be used to vent the flue gases from the
WF200 boiler. When connecting to an existing chimney it must be inspected thoroughly before firing the
equipment.
a) a masonry chimney conforming to provincial or territorial regulations or bylaws, or in the absence
thereof, to the National Building Code; or
b) a factory-built chimney conforming to CAN/ULC-S629; often referred to as “All-fuel” chimneys (Not
Applicable for U.S. installations). The appropriate clearance of these chimneys from combustible
materials is specified in the manufacturer’s installation instructions and also the listing label of the
chimney selection.
The chimney and flue pipe must be clean and in good condition to avoid the risk of fire.
Chimney Connector
Usually a few feet of flue pipe (single wall) are used to connect the boiler to the chimney and in such cases, this
section of the venting system is called a chimney connector. A great number of fires associated with wood
burning appliances are due to unsafe connector installations. The following requirements are designed to prevent
two hazards: 1) ignition of the surroundings, principally by radiant heating, and 2) inadequate draft, which could
result in serious smoke concentrations in the house. The minimum thickness of steel used for the chimney
connector must conform to the Table below.
Each flue joint should be secured with at least 3 metal screws or equivalent. Outside mechanical support should
be used if the connector is more than 6 feet long. The flue pipe should be accessible for inspection, cleaning and
possible replacement. If the flue pipe connects to an existing chimney, the pipe should penetrate through the
inner surface of the masonry wall, but not beyond (not into the space itself). The connection should be made
physically secure such as through the use of high temperature cement.
A flue pipe serving a solid fuel appliance shall:
a. Be securely supported by metal or other non-combustible supports.
b. Be as short and straight as possible.
c. Not exceed a maximum 10-foot horizontal run.
d. Be designed and constructed to allow for expansion.
e. Be sloped upward toward the chimney at least ¼ inch per foot of horizontal run.
f. Have a cross-section area no less than: 1) The area of the flue outlet of the appliance served by a flue pipe,
2) The combined area of the flue outlets of all the appliances served by a breeching.
g. Enter the side of a chimney through an approved metal thimble or masonry flue ring.
h. Not extend into the chimney flue.
i. Have a tight connection with the chimney.
j. Have installed at least three sheet metal screws to secure each length of flue pipe where they are joined and
where it is attached to the wood boiler flue outlet.
k. A flue servicing a solid fuel fired appliance should not pass through:
1. Attic or roof space, closet or similar concealed space
2. A floor, ceiling, wall or partition of combustion construction.
Loading...