Ardent F75R Service manual

FORCED AIR WOOD FURNACE
F75R and F101
PLEASE
KEEP THESE
INSTRUCTIONS
FORFUTURE
REFERENCE
Box 3637, Smithers, BC V0J 2N0
INSTALLATION AND OPERATION INSTRUCTION MANUAL
furnace/jc/june96
Operation
Maintenance
Installation

DearCustomer,
You have purchased one of the finest wood burning heating systems in North America.
YouwillfindthatyourArdentEnergyfurnacewilloperatemuchdifferentlythantheoldfashionedfireboxesofthepast. Youwill
experienceanewlevelof heatingcomfortand convenience,withgreater control,longerburn timesandreduced creosotedeposits.
Please take the time to become familiar with your Ardent Energy heating system. Study your manual carefully before you begin
installing or operating your furnace. Keep the manual handy for future reference.
If you would like to add optional equipment to your furnace, make sure that you have the serial number of your furnace when you
visit your Ardent Energy dealer. This will help us give you prompt and accurate service.
We at Ardent Energy congratulate you on your choice of wood furnaces, and are confident that you have purchased a product
that is simply, the best.
Ardent Energy Inc
JG(Hans)DuerichenPEng
President
April1999(ver3)
Table of Contents
3 Safety
3 Creosote
4 Furnace Specifications
4 OPERATION INSTRUCTIONS
4 Fuel
4 Bypass Damper
3 Lighting
4 The First Fire
5 Wall Thermostat Operation
5 Refuelling
5 Operation if the Power Fails
5 FURNACE MAINTENANCE
5 Daily
5 As Needed
5 Ash Removal
6 If You Have an Oil Add-on
6 Door
6 Draft Control
6 Firebrick
6 FURNACE INSTALLATION
6 Chimney Connection
6 Chimney Size
6 Chimney Termination
6 Floor Protection
7 Duct Work
7 Installation As A Forced Air Wood Furnace
7 Assembly
8 Electrical Components
8 Installation As An Add-on to An Oil
or Gas Furnace
9 Installation As An Add-on to An
Electric Furnace
10 FURNACE OPTIONS
10 Water Heating Coil
10 Connecting the Coil to the Tank
10 DrainingandCleaning
10 When You Have No Water
11 Paint
12 Replacement Parts - F75R
13 Replacement Parts - F101
14 Warranty
furnace/jc/june96

3
SAFETY
WARNING:Ifthisfurnaceisnotproperlyinstalled,ahouse
firemayresult. Foryoursafety,followtheinstallation
directions. Contactlocalbuildingorfireofficialsabout
restrictionsandinstallationrequirementsinyourarea.
NOTE: We strongly recommend installers to be WETT or
WHERF certified.
ToANYONE using this furnace:
These DO's and DO NOT's are for your safety.
1. DO read this instruction manual before lighting your first
fire.
2. DO burn seasoned wood fuel only. DO NOT burn:
- driftwood (salt corrosion is not a warranty item)
- treated wood
-coal
- garbage
- plastic
Also DO NOT use construction scraps (e.g., 2x4 or plywood
scraps) as your only supply of fuel, as you may overheat and
seriously damage the furnace.
3. DO NOT use gasoline type lantern fuel, kerosene, charcoal
lighter fluid or similar liquids to start or freshen up the fire in
this furnace. Keep all such liquids well away from the furnace
while it is in use.
4. DO keep the furnace door shut at all times when a fire is
burning. Open the door only to load or check the fire.
5. When checking or loading wood into the fire, DO pull open
the bypass lever first, then open the door very slowly.
6. DO keep all combustible materials (firewood, shoes etc.) at
least 18 inches away from the furnace.
7. Do not use a grate or elevate the fire.
CREOSOTE
When wood is burned slowly, it produces tar and other
organic vapours, which combine with expelled moisture to
form creosote. The creosote vapours condense in the rela-
tively cool chimney flue of a slow burning fire. As a result,
creosote residue accumulates in the flue lining. When ignited,
this creosote makes an extremely hot fire.
A chimney fire occurs when creosote in the chimney
ignites, usually when the furnace is turned up high after a
period of low burn.
Figure1:Furnacespecifications
Furnace Operation
flue
bypass damper
secondary air
water coil
water coil seal
cross draft
angle
smoke
shield
down draft
baffle
primary
air heat exchanger
primary air
secondary air
heat exchanger
heat exchangers

4
The chimney should be inspected periodically during the
heating season to see if a creosote build-up has occurred. If a
significant layer of creosote has accumulated (1/4" or more), it
should be removed to reduce the risk of chimney fire. Running
the furnace at maximum with the bypass pulled out for 1 to 2
hours about once a week will minimize creosote buildup.
In the event of an uncontrolled chimney fire, shut the
bypass damper and turn down the thermostat.
If the chimney fire does not die down, keep watch on the fire
and prepare to vacate the house. If needed, call the fire
department.
NOTE: Establish a routine for the storage of fuel, care of the
furnace and firing technique. Be aware that during mild
weather and low furnace temperatures, more creosote is
deposited and more frequent cleaning is necessary.
HINT: To avoid creosote build-up especially in mild
weather, fill the furnace only part way. Also, well seasoned,
unchopped wood will reduce creosote build-up dramati-
cally.
FURNACESPECIFICATIONS
• Type of fuel - Wood, any species
• Combustion system - Downfeed progressive cross-
draft design with a constant
pre-heated secondary air system
• Temperature control - Standard wall thermostat with
manualbi-metalliccontrolduring
powerfailure
• Fireboxlining - Firebrick:11/4"x41/2"x9"std.
• Body - Steel:12ga, 10ga&5/16"
• Doors - Constant centre push design
with fibreglass rope seal
OPERATIONINSTRUCTIONS
Thefollowingoperatinginstructionsmustbefollowed
carefully for satisfactory operation.
FUEL
Fuel wood can be of any species. However, ensure that
the wood is well seasoned and kept under cover. Do not burn
any fuel other than wood. Please note that if you use green
wood:
• The amount of wood that you use will increase around
20% when using green compared to dry wood.
• Heat output will be considerably lower and more frequent
fuellingwill be necessary.
• Green wood must be cut into smaller pieces to burn
acceptably.
• Creosoteformation may increase, especially in warm
weather.
• The fire will most likely have to be started with dry wood
until a good bed of coals is formed.
BYPASSDAMPER
When the bypass damper is open (i.e. the bypass rod is
pulledout)combustionwilltakeplacewithintheentirefirebox.
Operate the furnace with the bypass damper open only when
you need quick heat.
• When the desired temperature has been reached, push
the bypass rod in.
• Whenever there is a fire burning, the bypass damper
should be open for 30 seconds before you slowly open the
door.
• When you are starting a fire, the bypass damper should
be open to vent away smoke.
• The furnace door must be closed at all times, except
when you are loading fuel or checking the fire.
LIGHTING
Light a fire in the furnace, starting with paper and kindling
only. Never use any flammable liquids. After the fire is lit,
leave the door open a crack for a few minutes. Once a coal bed
is established, add standard cord wood and latch the door
shut.
THEFIRSTFIRE
Youwillexperienceaslowstart-upduringthefirstfire.
The firebricks bricks still contain moisture and take a good hot
fire to eliminate the moisture. While there is moisture in the
bricks, the bricks will be black with smoke deposits. When the
moisture is gone, the bricks will be light coloured. You may
also experience a slight odour during the first few fires. This
odour results from the curing paint and the burn-off of residual
oils.
Furnace Operation
Wood
Burning
Module No. F75R F101
Rating......(KW).. `1400 - 20000 `1400 - 27000
(BTU/hr). `5000 - 75000 `5000 - 100000
Size.........(mm)... 710W x 965L x 1090 H 760W x 1140L x
1180H
(in.)........ 28W x 38L x 43H 30W x 45L x 46 1/2 H
Weight............... 227 kg 295 kg
500 lbs 650 lbs
Fuel
capacity.......... 140 litres 250 litres
5 cu. ft. 9 cu. ft.
Max. fuel
size......... 250 mm dia. x 500 mm long 300 mm dia. x 600 mm long
10" dia. x 20 " long 12" dia. x 24" long
Flue
outlet............... 178 mm dia. 203 mm dia.
7" dia. 8" dia.
Cold air inlet
size..... 305 mm x 460 mm 305 mm x 460 mm
12" x 18 " 12" x 18"
Hot air outlet
size.... 445 mm x 680 mm 625 mm x 730 mm
18" x 26 3/4" 24 1/2" x 28 3/4"

5
FURNACEMAINTENANCE
DAILY
For the first little while, check the chimney and pipe until
experience shows how often cleaning is necessary. About
once a week, run the furnace at maximum with the bypass open
for one to two hours to burn off any creosote in the chimney
and pipes. This should greatly reduce how often you will
need to clean the chimney with a brush.
ASNEEDED
Any creosote build-up in the chimney and pipe over 6 mm
(1/4") should be removed with a brush. Make sure that the
bypass is open before you begin cleaning the chimney.
ASHREMOVAL
Ashes should be removed once they reach a depth of 100
mm(4") maximum. Letthefire burnout. Protectthearea in
front of the furnace with a non- combustible material. Shovel
the ashes into a metal container with a tight fitting lid. Other
waste should not be put in this container.
The closed container of ashes should be placed outside
on a non-combustible surface, or on the ground, well away
from any combustible materials. If the ashes are disposed of
by burial or otherwise locally dispersed, they should be
retained in the closed container until you are sure that all of
the cinders have thoroughly cooled.
WALLTHERMOSTATOPERATION
Set the thermostat to the temperature desired. When the
furnaceis warming up a cold room,there will be an initial
temperatureoverrun, then the temperature willstabilize.
REFUELLING
1. Have wood on hand to load the firebox.
2. Open the bypass damper for 30 seconds
3. Open the door slowly. Allow the chimney to draw off
smoke.
4. Load as much wood as you need (right up to the top in
coldweather).
5. Close the door and push in the bypass damper.
NOTE: Do not over- fire the furnace by leaving the door
open. The door should be open only when you light and
check the fire. Operation with the door ajar voids the
warranty.
OPERATIONIFTHEPOWERFAILS
(NOTFORUSEINFURNACESWITHDOWNFLOW
DUCTING)
1. Open the panel opposite to the air inlet to the wood
sectionto allow for air circulation.
2. Open all floor registers.
3. Adjust the draft manually by pulling up the chain just
below the damper motor lever, and placing it into the small
slot beside the chain guide (see Figure 2)
Do not expect as much heat in cold weather, because duct
work is not designed for heating without a blower. When
poweris restored, the damper motor will automatically pull the
chain off the slot and resume normal operation.
NOTE: The chain guide must be "clipped" by installers if
the furnace is installed to heat areas below the furnace.
pawl
•Totightenthedoor,loosenthebottomnutandtightenthetopnut
Figure 3: F75R door adjustment
• Toadjustthedoorinandout,
loosenthetoptwonuts,adjust
thedoor.Tightenthenuts.
Figure4:F101 dooradjustment
Furnace Operation
nuts
dampermotorlever
Figure2:Operation duringapowerfailure
chainguide
• Toadjustthedoorupor
down,loosenthebottomtwo
nuts,adjustthedoor. Tighten
thenuts.

6
IFYOUHAVEANOILADD-ON
Operate the oil fired unit periodically to ensure that it will
operate satisfactorily when you would like to use it.
DOOR
The door is a unique adjustable centre-push design to
ensure trouble-free, air tight operation for years to come.
When you close the door, there should be a slight resistance.
If there is not, the door needs adjusting. The door pawl (the
catch on the closing mechanism) should be lubricated regu-
larly with a high temperature grease, so the door opens and
closes easily.
If the fibreglass seal shows signs of excessive wear, it may
not seal properly, and cause the furnace to burn hotter than
desired. Replace it with a gasket replacement kit (part #
FDGRK5)
DRAFTCONTROL
Check that the draft control opens and closes freely. If it
does not, open the front left panel and make sure the chain is
not binding.
FIREBRICK
Take care when you are refuelling the furnace to avoid
breaking the brick. If you are burning wood with chunks of ice
and/or snow, do not let the frozen surfaces touch the firebrick.
Ifany firebrickbreaks,replaceit immediately inorderto avoid
overheatingthefirebox.
FURNACEINSTALLATION
The F75R and F101 furnaces may be installed as follows:
1. As a stand-alone wood furnace with blower.
2. As an add-on to a stand-alone oil, gas or electric
furnace.
WARNING: Thesefurnacesarenotcertifiedforusewithan
automaticstoker.
CHIMNEYCONNECTION
The furnace must be installed with a minimum of elbows
and horizontal flue pipe. All horizontal pipe must slope
towards the furnace and be installed with the seam up. The
flue opening on top of the furnace is designed so the pipe will
fit inside the opening. Make all connections in such a way
that any condensation in the flue runs back into the furnace
and not on to the floor. After installing the pipe, each joint
must be secured with 3 screws spaced evenly around the joint.
Allsingle wall stove pipe must havea460 mm (18") clearance
fromallunprotectedcombustiblematerial.
CAUTION: Undernocircumstanceisanytypeofdamperor
restrictiontobeinstalledintheconnectionbetweenthe
furnaceandthechimney. Abarometricdraftcontrolmustbe
installedandsetat15PA(0.06")draft. Removalornon-
installationofthebarometricdampervoidsthewarranty.
CHIMNEYSIZE
F75R
178mm(7")roundor
150mmx250mm(6"x10")insidemeasure
F101
203mm(8")roundor
150mmx250mm(6"x10")insidemeasure
NOTE: (In U.S.A. only) You may not connect this furnace to
a chimney flue serving another appliance.
ARDENTEnergyfurnaces burn very efficiently, resulting
in lower than usual flue gas temperatures. Consequently, we
do not recommend an outside installation of the chimney. If
you have an exterior chimney, certain weather conditions will
cool the chimney below room temperature. When this hap-
pens, a back draft and/or creosote formation will occur.
If you are using an existing chimney, it must be inspected
carefully for soundness and to be sure that the preceding
requirementsaremet.
Note: Optimum performance for these furnaces are obtained
with a draft of between 0.06" and 0.07" (Water Column).
After the installation is complete, the draft must be checked
by your dealer, using a draft gauge while the furnace is
operating at a normal temperature.
CHIMNEYTERMINATION
Chimneysare requiredtoextendat least 915mm(3 ft.)
above the highest point where they pass through the roof of
the building and at least 610 mm (2 ft.) higher than any portion
within10feet.
In some cases, the chimney must be higher than the
minimum for proper draft, due to unfavourable geometry of
surroundings.
Furnace Installation
Minimum Flue Height Requirements
elevation minimum flue height
0 to 2000 ft. 12 ft.
2000 to 3000 ft. 13 ft.
3000 to 4000 ft. 14 ft.
4000 to 6000 ft. 15 ft.
6000 to 8000 ft. 16 ft.
8000 to 10 000 ft. 17 ft.

7
Plenum pressure F75R F101
50PA (0.20") 5 turns open 3 turns open
75PA (0.30") 3 turns open 1 1/2 turns open
100 PA (0.40") 1 turnopen 0 turns open
Furnace Installation
FLOORPROTECTION
If the floor is combustible, it must be protected by 7 mm
(9/32")orthickerofnoncombustiblematerialextending150mm
(6")fromthe sides and rear, and 460 mm (18") from the front.
DUCTWORK
Minimumsizes: F75R
Returnair: 1520sq.cm(220sq.in)
Supplyair: 1290sq.cm(200sq.in)
F101
Returnair: 1610sq.cm(250sq.in)
Supplyair: 1420sq.cm(220sq.in)
NOTE: The height of the return air inlet must not be higher
than the warm air registers. A fresh air duct must be in-
stalled into the return air system (the recommended size is 8"
diameter).
INSTALLATIONASAFORCEDAIRWOOD
FURNACE
Be sure that you have the following:
•Wood furnace module # F75R or F101
•Blower-Delhimodel210orLauDUA10
•Motor-1/3HP,1800RPM,110V60Hz
•Connectingduct model FCADB
•ControlkitmodelFCFC1,whichincludes:
• Thermostat
•Dampermotor
•Fan/limitcontrol
•Transformer c/w wiring harness
NOTE: OBSERVE MINIMUM CLEARANCES! If you need to
reduce the rear clearance, you can cut it to half (50%) if you
protect combustible surfaces with .3mm (.013") or heavier
sheet metal. You must space the sheet metal out 25 mm (1")
by non-combustible spacers (see CSA Installation code
B366 - 1791).
ASSEMBLY
After deciding which side is best for the blower unit,
remove the inlet cover on that side. Use the screws to attach
the connector. The blower sits on top of the connector,
oriented so that the air moves down into the wood furnace
when the blower is on. Make sure that the fan pulley is 203
mm(8")indiameter.
After measuring the pressure in the hot air plenum, set the
motorpulleyasfollows:
ELECTRICALCOMPONENTS
1. Install the damper motor using the holes provided
beside the control chain.
2. Install the fan/limit control bracket using the holes
provided on the centre of the front of the furnace. The fan/
limit control can be installed after the hot air plenum is in
place.
3. Install the junction box with the transformer on the top
front corner of the furnace nearest to the blower.
4. Install the room thermostat on a wall centrally located in
the home. It should be located away from the direct heat of
the furnace or a hot air duct.
5. Connect the wiring as shown inFigure 6.
***Besuretoprovideaccess
for cleaning the flue pipe ***
370mm(141/2")
125 mm (5")
150 mm (6") 25 mm (1")
furnace
blower
Figure5a:Clearances
2m (6')
50 mm (2") 50 mm (2"0) 25 mm (1")
supplyduct
furnace
connecting
duct
blower
returnair
plenum
Note:Ifthesupplyairductisrouted
belowfurnacelevel(e.g.,inthecrawl
spaceunderneath)thenthepowerfailure
modemustbedeactivated(seepage4).
Figure5b:Ductclearances

8
INSTALLATIONASANADD-ONTOANOIL
ORGASFURNACE
Be sure that you have the following:
•Wood furnace module # F75R or F101
•ControlkitmodelFCFC2orFCFC3,whichincludes:
• Thermostat
•Dampermotor
• 2 fan/limit controls mounted on a bracket
• Junction box
YOUMUSTDETERMINEWHETHERTHEOILORGAS
FURNACESIZEFALLSWITHINTHERANGESHOWNIN
THEFOLLOWINGTABLE:
The installation must be performed in series as shown:
(the attachment may be made on either side)
The following checks must be carried out before making
any alterations:
1. Check the size of the furnace. The furnace must match
the specifications of the above table.
2. If the existing furnace is an oil furnace, then check the
size of the nozzle in the oil burner (see table above).
fanlimitcontrol
woodsection roomthermostat
wood
dampermotor
woodsection
white
black
red
120v
blower
black
white
24v
F igure 6: Wiring diagram for a forced air wood furnace
existingoilfurnace
12"x18"connectingduct
woodfurnace
supplyair
plenum
Figure 7: Connection to an oil furnace
Furnace Installation
3. Check the system air flow as follows:
• Open all of the registers and install a new filter.
• Measure the temperature rise using two thermometers.
One should be placed through a hole in the hot air plenum.
Run the furnace for 15 minutes then check the temperature,
giving the thermometers enough time to read accurately.
Record both the inlet and the outlet temperatures.
The temperature rise (outlet temperature minus the
inlet temperature) should not exceed 30° C (85° F). If so,
increase the blower speed so that the temperature rise is
less than or equal to 30° C (85° F).
• Find the air flow by using one of the following formulas:
If you are using metric units:
Q=24000xG
A
Where: Q = air flow in cu. metres/sec
G = oil input rate in litres/sec.
A= air temperature rise, in °C
If you are using standard units:
Q=95000xG
A
Where: Q=airflowincu.ft/min
G=oilinputrateinUSGPM
A= air temperature rise, in °F
• Check that the duct work and chimney are sound and
that the chimney is of sufficient size (See the chimney
section).
After all checks have been carried out, the wood furnace
may be installed. This task must be performed by a qualified
technician.
Existing furnace O I L G A S
type Input Output
F75R 243 to 3.79 litres/hr 20.0 to 27.8 Kw
(0.65 to 1.00USGPH) (64,000to98,000 BTU/hr)
F101 3.22 to 4.73 litres/hr 22.2 to 36.0 Kw
(0.85 to 1.25 USGPH) (76,000 to 123,000 BTU/hr)

9
Furnace Installation
NOTE: The installation must comply with CAS Standard
B365-M87 - "Installation Code For Solid Fuel Burning
Appliances And Equipment."
If any changes are required on the oil furnace, these must
comply with CSA Standard B139 "Installation Code for Oil
Burning Equipment."
Prepare the plenums and connecting ducts:
• The connecting duct between the oil furnace and the
woodfurnacemustbe305mmx460mm(12"x18")with
elbowshavingaminimuminsideradiusof150mm(6").
• Do not connect duct work so that reverse flow is
possible (the cold air return must not be higher than the
warmairoutlets).
• After the installation is complete, recheck the air flow as
before. If the air flow is less than before, the blower speed
must be increased to compensate for the pressure drop
through the system.
• For multi-speed blower motors, use the higher speed, if
needed.
• For belt-driven blowers, adjust the pulley diameter on the
motor to give the extra speed required. If necessary, a
larger blower motor may be used if the faster speed
increases the air flow above the rating on the motor
nameplate. HOWEVER,THEBLOWERMUSTNOTBE
CHANGED.
•Followthewiringdiagramprecisely.
INSTALLATIONASANADD-ONTOAN
ELECTRICFURNACE
Be sure that you have the following:
•Wood furnace module # F75R or F101
•ControlkitmodelFEFC3,whichincludes:
• Thermostat
•Dampermotor
• 2 fan/limit controls mounted on a bracket
•WiringharnesswithLVterminalblock
Your electric furnace blower must be large enough to keep
thefurnace equal toorbelowthe followingmaximumtempera-
ture rises:
WARNING: Iftheairflowistoolow,yourinstallationwillbe
unsafe.
NOTE: The temperature rise must be measured between the
inlet and the outlet of the electric furnace only.
Ifthe electric furnace is certified for counter-flow opera-
tion (upside down) it should be installed according to Figure
5b. Use the connecting duct (part FCADB) in the installation.
Its dimensions are shown in Figure 9.
Furnace Size Output
(BTU/hr) Max temp. rise, F75R °C (°F) Max temp. rise, F101 °C (°F)
10 kW 34100 24° (43°) 21° (37°)
15kW 51200 36° (65°) 31° (65°)
20 kW 68200 42° (75°) 41° (73°)
25 kW 85300 42° (75°) 42° (75°)
30 kW 102400 N/A 42° (75°)
35 kW 119400 N/A 42° (75°)
Figure 9: Connecting duct (part # FJADB)
165mm
(61/2")
432mm(17")
432mm(17")
305mm
(12")
460mm
(18")
blower(notused)
aux.limit
140°F
damper
motor
wood
thermostat
oilorgas
thermostat
wiresuppliedby
customer
wiresuppliedwith
harness
*
*jumper
removed
to
blower
motor
110 V
source
24 V
source common
from 24 V
transformer
lowvoltage
terminalblock
black
white
green
16/3
LVT
16/2
LVT
14/2
BX
limit
blower
limit
Figure 8: Wiring diagram for adding on to oil or gas (control kit #FEFC2)
blowerandwood
limit - 250°F
to furnace
start relay

10
Furnace Options
FURNACEOPTIONS
WATER HEATINGCOIL
ARDENT Energy furnaces are designed to heat your
domestic hot water during the heating season. The F75R and
F101 can accept 1 or two coils (1 per side). When you install
the water coil (part FCSHW4) it replaces all but one of the
firebricks on the side it is located. Please read all of the
instructions before you begin.
To install the water coil:
1. Remove the back shroud on the furnace by removing
the screws. Using a good punch and hammer, punch out
the two knockouts on the side where you would like to
installthe water coil.
2. Removeallofthefirebrick from that side.
3. Punch out the two knockouts at the rear of the firebox.
4. Remove the baffle plate inside the rear of the firebox.
5. Position the water coil in the firebox, in the place where
the firebrick was removed. The pipe must face the fire.
6. Install the ceramic gaskets and plates on the outside of
the firebox (not on the outside of the shroud) using the
provided drill and tap screws.
7. Replace the shroud.
CONNECTINGTHECOILTOTHETANK
We recommend that you use the "two tank" system. The
first tank or "range boiler" must remain uninsulated to dissi-
pate any excess heat generated by the hot water coil.
When you connect the piping to the range boiler you must
strictly follow the diagram in figure 11. The two shut-off
valves must be no smaller than 3/4" GATE valves. Make
certain that the PRV (Watts 3L) and the P&TRV (Watts 100
XL) are installed in their respective locations and not vice
versa.
Themaximumpressuresetting is 38 kPa (150 psi). Do not
use less than 3/4" diameter standard pipe between the range
boiler and the furnace. The orientation of the pipe must be
slightly uphill from the coil outlet to the upper connection at
the tank. If you do no do this, vapour lock will occur, and the
waterwillnotcirculate. Theminimumcapacity of the range
boilershould be 100litres (26U.S.gallons).
DRAININGANDCLEANING
Cleaning should not normally be necessary unless the
water tends to cause deposits. If the heating efficiency
decreases noticeably, the heating coil should be inspected,
and if necessary, cleaned.
1. Let the furnace cool down.
2. Close the valves between the range boiler and the coil.
3. Open the drain valves and drain the water from the coil.
4. Disconnect the coil at the unions.
5. Clean the coil using a drain cleaning "snake."
6. Connect the piping, close the drain and open the valves
to the boiler.
WHEN YOU HAVE NOWATER
Do not operate your furnace with a dry water coil. The
excess heat will damage the water coil. If you have no water
electric,
oilorgas
thermostat
blower
limit
blower(notused)
limit
aux.limit
140°F
blower&wood
limit250° F
damper
motor
wood
thermostat
white
black
C
WGR wiresuppliedwith
harness
wiresuppliedby
customer
24V
source
toblower
relay
common
from24V
transformer
toelectric
furnacerelay
lowvoltageterminalblock
16/2
16/3
16/4LVT
Figure10:Wiringdiagramfortypicalwood-electriccombination(controlkit#FEFC3)
P&TRV(Watts100XL)
PRV(Watts3L)
1/4"gatevalve coldwaterin
insulatethis
connectingpipe hot
water
out
rangeboiler
(uninsulated)
todrain to
drain
existingwater
heater
dip
tube
1/4"union
furnace
Figure 11: Connection to hot water heater

11
Furnace Options
for circulation, disconnect and remove the coil. To seal the
holes, use two 25 mm (1") diameter standard washers per hole,
and use a 19 mm x 25 mm (3/4" x 1") bolt to hold the washers
together.
PAINT
You may touch up the face of the furnace with STOVE
BRIGHTSatinBlack1990hightemperaturepaint. Thecorrect
paint is available from your dealer. When you paint the face of
the furnace, cover the area surrounding the furnace with
newspaper. Follow the directions outlined on the spray can.
DO NOT attempt to paint while the furnace is still warm. Keep
the spray can away from any source of heat or open flame.
Ensure that there is adequate ventilation in the room, from the
time you start painting until the paint is dry.

12
ReplacementParts
F75R Replacement Parts
ITEM QTY/UNIT DESCRIPTION PART#
1 1 rear top shroud A399P
2 1 back shroud liner assy A414W
3 1 bypass damper assy A237W
4 1 bypass lever A239W
5 1 flame deflector A533
6 2 outside fin A407
8 1 water coil (optional) FCSHW4
9 1 side shroud door A398
10 1 bypass assembly A272
11 1 Scandinavian baffle AAPO14
12 1 bypass frame bottom A238
13 1 baffle down draft A532
14 2 smoke shield assembly A129W
15 1 door liner A302
16 30" cross draft angle assy A725LW/RW
17 1 side shroud assy A413W
18 1 ball chain R6110
19 1 front top shroud (T-nut) A400
20 2 bypass bar A391
21 60" door closure pawl A309
22 1 hug lock nut R1442
23 1 KIT gasket replacement kit FDGRK5
24 1 door final assembly A317-75
25 1 front side shroud A401
26 1 prim. air heat exhanger A390W
27 1 air inlet cast A913
28 1 butterfly "D" assembly A720W
29 1 lower front shroud A717
17
18
13
19
20
21
22
23
24
25
26
27
28
29
16 15
14
12
11
10
1
2
3
4
6
5
8
9

13
ReplacementParts
14
16
17
25
13
26
15
29
18
19
20
21
22
23
24
7
6
4
3
27
2
1
8
9
10 12
11
28

F75R&F101FURNACE WARRANTY
FIVE YEAR LIMITED WARRANTY
Ardent Energy Inc warrants the F75R and F101 furnaces against defects in material and workmanship
for a period of five years from the date received, with the exception of items listed hereafter in the "Exclusions"
section.
Ardent Energy Inc, at its option, will replace, repair or cause to be repaired any part found to be defec-
tive upon inspection by an authorized ArdentEnergy Inc representative.
EXCLUSIONS
1. Repairs or replacement of part or the entire appliance necessitated by use of the furnace other than
for normal home use, as directed by the instruction manual.
2. Repairs or replacements necessitated by vandalism, neglect, abuse or failure to adequately service
the appliance, as stated in the instruction manual.
3. Repairs or replacements necessitated by work or service not authorized by Ardent Energy Inc
equipmentand accessories notmanufactured by ArdentEnergy arewarranted only tothe extent of
theoriginalmanufacturer’swarranty.
4. Replacement of gaskets and firebrick.
5. Repairs necessitated by excessive chimney draft.
LIMITATIONS
1. All items found to be defective will be replaced or repaired upon return of the defective part to an
authorizedArdentEnergyIncdealer.
2. Any furnace or part thereof that is replaced or serviced during the five year warranty period, will
be warranted under the terms of that particular limited warranty for a period not exceeding the
remaining term of the original limited warranty, or six months, whichever is longer.
3. This warranty is transferable. However, proof of date of purchase is required before service or
replacement of any defective part is performed.
4. This Limited Warranty does not apply to damage to the furnace or part thereof, while in transit.
Any claim of such must be directed to the common carrier.
5. If the installation does not conform to local building or fire codes, or in their absence, the installa-
tion requirements in the instruction manual, any claims are not valid and will not be processed.
6. Any shipping charges incurred during a warranty claim will be borne by the furnace owner.
7. The remedies set forth herein are exclusive, and the liability of Ardent Energy Inc with respect to
any contract, tort, under any warranty or otherwise shall not exceed the price of the equipment or
part on which such liability is based.