Dettson SMH-1-DE Assembly instructions

2015-07-29 X40010 Rev. K
Caution: Do not tamper with
the unit or its controls.
Call a qualified service
technician.
Save these instructions for future reference.
Printed in Canada
Printed on 100% recycled paper
SIDEWALL VENTER
Models :
SMH-1-DE
SMH-6-DE
SMH-3-DE
SMH-4-DE
SMH-5-DE
SMH-1-BR
SMH-4-BR
Manufactured by:
DETTSON
Industries Dettson Inc.
Sherbrooke, Quebec –Canada
www.dettson.ca

3
PART 1
INSTALLATION
1.1) DANGER, WARNING AND CAUTION
The words DANGER, WARNING and CAUTION are
used to identify levels of seriousness of certain hazards.
It is important that you understand their meaning. You
will find those words in the manual as follows:
DANGER
Immediate hazards which WILL result in death or
serious injury.
WARNING
Hazards or unsafe practices which CAN result
in death or injury.
CAUTION
Hazards or unsafe practices which CAN result in
personal injury or product or property damage.
ATTENTION
PLEASE ENSURE THAT THE AREA AROUND THE
VENT TERMINAL IS KEPT CLEAR OF SNOW, ICE,
DEBRIS, ETC..
NOTICE TO THE INSTALLER
The minimum measured length of vent pipe is 30 inches
with the draft-regulator located 18 inches from the unit
outlet. This distance is the linear sum of all horizontal
and vertical connecting pipes with a maximum of two
90oelbows. See Figure 1. Therefore, the minimum
equivalent length is 22.5 feet (a 90oelbow is equivalent
to 10 feet of flue-pipe and a 45oelbow is equivalent to 5
feet).
The maximum measured length of vent pipe is 20 feet
from the breech of the heating unit and the power venter
inlet. This distance is the linear sum of all vertical and
horizontal connecting pipes with a maximum of 4, 90o
elbows. See Figure 1. Therefore, the maximum
equivalent length is 60 feet.
When all adjustments are completed in accordance with
this manual and the boiler or furnace Installation and
Operation manual, it is recommended that you ensure
that the inlet temperature at the power venter is at least
200oF (93oC). In the event that you are not able to
reach this temperature within 5 minutes from a cold
start, it is recommended that you increase it by using
one or a combination of the following options:
Relocate the furnace or boiler to shorten the flue-
pipe length;
Use a type "L" vent upstream of the power venter;
Insulate the flue-pipe upstream of the power venter.
To do so, use 1 inch Microlite FSK insulation by
John Mansville or an equivalent. Wrap the insulation
around the flue-pipe and use high temperature
aluminium tape to secure it. Leave the outlet of the
draft-regulator free of obstructions.
After the modifications are completed, wait 30 minutes
to let the system cool down and then retest the
temperature at the inlet of the power venter after 5
minutes of operation. The temperature must then be
over 200oF (93oC).
!
!

4
1.2) INSTALLATION
This unit must be installed by a qualified, professional
installer in accordance with these instructions and CSA
B139 section 4.3. If improperly installed, a hazardous
condition could result.
The power venter shall not be installed on incinerators,
incinerating toilets, condensing type appliances or solid
fuel burning appliances.
The installation shall be in accordance with the existing
codes and regulations established by the authorities
having jurisdiction.
The venting unit may be installed through a combustible
wall with a maximum thickness of 8 inches or through a
non-combustible wall of 16 inches including a
combustible exterior wall of no more than 8 inches. The
minimum wall thickness is 2 inches. A type B vent shall
not be used in the venting system.
1.2.1) General installation guidelines
The first step in installing the power venter is to find the
location that is in accordance with the following criteria:
The flue discharge terminal of the venting system
shall be installed not less than 7 feet above any
paved driveway or paved walkway;
A power venting system shall not terminate within
6 feet of a mechanical air supply inlet to any
building including soffit opening or within 6 feet of
a window, door or property line;
The flue discharge terminal shall not be installed
within 3 feet horizontally of the vertical center-line
above a gas meter/regulator assembly;
The venting system discharge terminal shall not
be installed less than 1 foot above grade level;
The discharge of the flue gases shall not be
above a paved sidewalk or paved driveway which
is located between two buildings where their use
is common to both buildings;
The vent terminal shall be installed such a way
that the flue gases do not jeopardize people,
overheat combustible structures or enter any
openings of surrounding building within 6 feet;
The vent terminal shall not be within 6 feet of any
gas service regulator vent outlet or within 3 feet of
any oil tank vent or oil tank fill inlet;
The vent terminal shall not be less than 6 feet
from an adjacent building or closer than 3 feet to
an inside corner of an L shaped structure;
The vent terminal shall not be less than 6 feet
from another combustion appliance air intake;
The bottom of the vent termination shall not be
installed less than 1 foot above any surface where
snow, ice or debris may accumulate;
The vent termination shall not be located such a
way that damage is caused to the brick work,
mortar, wood or other components of the con-
struction by flue gas condensate or temperature;
The vent termination shall not be located
underneath a veranda, porch or deck.
1.3) List of components
Please consult Figure 1. The parts being shipped with
the power venter are:
a. The "Fan-motor" assembly (stainless steel casing).
Part number SWV-1M-2S or SWV-2M-2S;
b. A junction box with a pressure switch, factory
mounted. Part number R99F001;
c. A 3 to 6 inch flue-pipe reducer with integrated
back-flow damper. Part number FD-02;
d. A 6 to 5 inch fitting; for SMH-3 kit only. Part
number Z07F010;
e. A 6 to 8 inch fitting; for SMH-5 kit only. Part
number Z07F005.
1.4) Power venter installation
Verify if the power venter is correctly sized according to
Table 1. All appliances must enter the vent system on
the inlet side of the power venter.
You must install a barometric draft regulator in
accordance with your heating unit instruction manual.
See Figure 1.

5
TABLE 1
Sidewall venting selection chart
Heating unit
MODEL
Connecting
pipe ( " )
Input
(USGPH)
Sidewall venter
Reducer
( " )
Package
number
Burner
AM(i)-076 to 110
6
0.65 to 0.92
SWV-1M-2S
SMH-1-DE
Beckett or Riello
AM(i)-120 to 140
6
1.00 to1.20
SWV-2M-2S
SMH-4-DE
Beckett or Riello
AME-15 to 25
6
0.65 to 0.85
SWV-1M-2S
SMH-1-DE
Beckett or Riello
AM(i)T-075 to 105
5
0.50 to 0.75
SWV-1M-2S
6 - 5
SMH-3-DE
Beckett or Riello
AM(i)T-120 to 155
6
0.85 to 1.10
SWV-2M-2S
SMH-4-DE
Beckett or Riello
HM(R)-080 to 121
5
0.75 to 1.00
SWV-1M-2S
6 - 5
SMH-3-DE
Beckett or Riello
HM(i)-103 to 159
6
0.85 to 1.35
SWV-2M-2S
SMH-4-DE
Beckett or Riello
HM-185 to 212
8
1.50 to 1.75
SWV-2M-2S
6 - 8
SMH-5-DE
Beckett or Riello
HMD-124 to 208
7
1.00 to 1.50
SWV-2M-2S
6 - 7
SMH-6-DE
Beckett or Riello
HME-15 to 20
6
0.65 to 0.75
SWV-1M-2S
SMH-1-DE
Beckett or Riello
HME-23 to 25
6
0.85 to 1.10
SWV-2M-2S
SMH-4-DE
Beckett or Riello
HML-115 to 175
6
1.00 to 1.50
SWV-2M-2S
SMH-4-DE
Beckett or Riello
HMT-012 to 018
6
1.00 to 1.50
SWV-2M-2S
SMH-4-DE
Beckett or Riello
HMS-027 to 035
6
0.65 to 0.85
SWV-1M-2S
SMH-1-DE
Beckett or Riello
HMS-041 to 062
6
1.00 to 1.50
SWV-2M-2S
SMH-4-DE
Beckett or Riello
AMP-075 to 105
5
0.50 to 0.75
SWV-1M-2S
6 –5
SMH-3-DE
Beckett or Riello
AMP-120 to 155
6
0.85 to 1.10
SWV-2M-2S
SMH-4-DE
Beckett or Riello
LO-1MQH-3M*
5
0.65 to 1.00
SWV-1M-2S
6 –5*
SMH-1-BR
Brock or Riello
FBR-1*
5
0.65 to 1.00
SWV-1M-2S
7 –5*
SMH-1-BR
Brock
MBP*
5
0.65 to 1.00
SWV-1M-2S
6 –5*
SMH-1-BR
Brock, Beckett or Riello
MBP-U*
5
0.65 to 0.85
SWV-1M-2S
6 –5*
SMH-1-BR
Beckett
MBP-F*
5
0.65 to 1.00
SWV-2M-2S
6 –5*
SMH-4-BR
Brock or Beckett
CCC*
5
0.50 to 0.85
SWV-1M-2S
SMH-1-BR
Brock or Beckett
LO-2M*
5
1.10 & 1.25
SWV-2M-2S
7 –5*
SMH-4-BR
Brock
MBP-2*
5
1.10 & 1.25
SWV-2M-2S
6 –5*
SMH-4-BR
Brock
CMO32 / CMO50*
5
0.65 to 0.75
SWV-1M-2S
6 –5*
SMH-1-BR
Beckett or Riello
CMO32-II / CMO50-II
Not Available
IB30 / IB32-R*
5
0.65 to 0.75
SWV-1M-2S
6 –5*
SMH-1-BR
Beckett or Riello
30-RB*
5
0.65
SWV-1M-2S
6 –5*
SMH-1-BR
Beckett or Riello
32E2*
5
0.75
SWV-1M-2S
6 –5*
SMH-1-BR
Brock
50E2 / IB50-O*
5
0.65 to 0.75
SWV-1M-2S
6 –5*
SMH-1-BR
Brock or Riello
* Sidewall vent kit does not include the reducer for the appliances using a 5 inch connecting pipe.

6
1.4.1) Preparation & Requirements
Find a location on an outside wall that meets all the
conditions stated in section 1.1. Consult Figure 2 for
the main dimensions of the system components.
Find the best location suitable inside the building for
the pressure switch junction box. See Figure 3. Using
the mounting template supplied with the venter box,
drill all necessary holes (flue-pipe hole, mounting
hole, etc.) on the outside wall, at the desired location.
WARNING
The fan-motor assembly and the pressure
switch junction box must be mounted
vertically to ensure proper operation of the
fan proving switch and to prevent motor
bearing wear.
1.4.2) Installation on a COMBUSTIBLE
wall
WARNING
Do not remove the exterior sleeve in the
case of combustible walls. This sleeve is
necessary for combustible walls.
At this point, the unit is ready to be installed on the
exterior wall. To do so, take the assembled unit
outside and insert the vent pipe into the opening from
outside and bring the wall plate assembly flush with
the exterior wall. Secure with four screws. If the wall is
made of cement, brick or concrete, cement anchors
should be used. Step figure 4A.
1.4.3) Installation on a
NON-COMBUSTIBLE wall
Remove the exterior sleeve as shown on figure 4B.
To remove this part, simply unhook its retaining clips.
At this point, the unit is ready to be installed on the
exterior wall. To do so, take the assembled unit
outside and insert the vent pipe into the hole from
outside and bring the wall plate assembly flush with
the exterior wall. Secure with four screws. If the wall is
made of cement, brick or concrete, cement anchors
should be used. See Figure 4B.
1.4.4) Connection to the junction box
The only two non-electrical steps to perform, as far as
the installation is concerned, are the installation of the
pressure switch junction box and the connection of the
pressure sensing pipe to this junction box.
Install the junction box on the inside wall, as closely as
possible to the location where the vent pipe enters this
wall. Secure the junction box to the wall with two
screws, ensuring that the pressure switch is vertical. If
the wall is made of cement, brick or concrete cement
anchors should be used. See Figures 3 and 4.
Connect the pressure tube on the side of the proving
switch. When connecting this line make sure that any
bends in the line are smooth and the line is not
obstructed by a sharp 90oturn. Also make sure that
the connection to the proving switch is tight enough so
as to prevent leaks and not too tight so as to damage
the compression fitting. Teflon tape should not be used
on this fitting.
1.5) Connecting the heating unit
to the SWV
Determine the required vent pipe diameter from
Table 1. Install properly sized vent pipe sections from
the power venter inlet to appliance outlet. Package
SMH-3 requires the installation of a 6 to 5 inch fitting
for the transition between the back-flow damper inlet
and the connecting pipe outlet. Package SMH-5
requires the installation of a 6 to 8 inch fitting for the
transition between the back-flow damper inlet and the
connecting pipe outlet.
1.6) Back-flow damper installation
The sidewall venting system must absolutely be fitted
with the back-flow damper that is included in the
shipment. This damper prevents the back-flow of cold
air when the system is off cycle and all problems
associated with this phenomenon. Before installing the
back-flow damper, install the 6 to 3 inch reducer on the
3 inch venter pipe. Depending on the model, this
reducer might already be installed. The damper must
be installed with the arrow pointing in the direction of
the flue gas that is toward the venter. Furthermore, the
damper must be resting on its fixed stopper when the
unit is not functioning. To achieve this, the damper
must be installed in the HORIZONTAL POSITION with
the arrow at the top of the damper. Level the back-flow
damper on both the horizontal and vertical axes. THIS
DAMPER MUST BE INSTALLED WITHOUT
ALTERATION. If this condition is not respected
unpredictable and erratic operation may result.
!
!

7
1.7) “Thick wall” (20 inch) installation
If this venting unit is to be installed on a wall that is
thicker than 8 inches, it must be installed with the
“thick wall” extension kit. This kit consists of a 16 inch
connecting pipe (part number B01297-01). To install
this, refer to the installation instructions of this
package.
1.8) WIRING
Refer to the electrical diagram related to the
appliance model and burner type for the installation.
Refer to Table 2.
The installation of the equipment shall be in
accordance with the regulations of authorities having
jurisdiction and CSA B139. All wiring of the equipment
supplied by the manufacturer must use 16 gauge wire
approved for 105oC (221oF), enclosed in a certified
protective conduit such as B-X, in accordance with the
colour codes specified in Figures 5A to 5M.
With this arrangement, the command to the power
venting system will come from the heating unit, through
its operational control to the power venter motor. When
a steady state is reached in the vent system, the
pressure proving switch will close and start the burner.
After the cycle, when the operational control opens, the
burner stops immediately and the power venter runs
for 5 minutes to clear all residual combustion gases in
the system.
TABLE 2
FIGURE
MODELS
BURNER
5A
AMI, AMT-IM and OLS
Beckett or Riello
5B
AMT-SM and OSR
Beckett
5C
AMI and HE
Beckett
5D
AMI and HE
Riello
5E
AMT-SM and OSR
Riello
5F
AMP and OMP
Riello
5G
AMP and OMP
Beckett
5H
LO-1MQH, LO-2M, FBR-1, LO-1M3M, MBP, MBP-F, MBP-2 and MBP-U
Beckett
5I
BRF and BFF
Beckett
5J
HMT, HML, HMI et HMD, triple aquastat
Beckett or Riello
5K
HMR, HML, HMT, HMI et HMD, double aquastat
Beckett
5L
Water heater, CMO32, CMO50, 30RB, 32E2, 50E5, IB-30, IB32-R and IB50-O
Beckett
5M
AME and HME
Beckett

8
PART 2
OPERATION
2.1) START-UP & ADJUSTMENTS
For the start-up of your heating unit, please refer to the
instruction manual supplied with it. The start-up of a
system using a power venter is exactly the same as a
system without a power venter. The power venter is
merely replacing a chimney.
2.1.1) Draft adjustment
The power venting system shall be adjusted by reading
the flue draft upstream of the draft regulator and
adjusting this regulator with the draft setting specified
below. These specifications correspond to the heating
unit instruction manuals.
TABLE 3
Draft adjustment
Heating unit model
Draft (" W.C.)
AME, HME, AM(i), AM(i)T, AMP, OLS,
OSR, OMP, HMT, HML and HM(i)-
1.35 USGPH and less
-0.035
HMD and HM(i)-1.50 USGPH and
more
-0.050
LO-1MQH, LO-1M3M, FBR-1, MBP-U,
CCC, MBP, BRF, CMO32, CMO50,
30RB, 32E2, 50E2, IB-30, IB32-R and
IB50-O
-0.020
LO-2M, BFF, MBP-2 and MBP-F
-0.040
2.2) VERIFICATIONS AND TESTS AFTER
START-UP
The following tests must be performed after the start-
up to ensure safe, reliable and trouble free operation.
2.2.1) Ignition test
The installer must verify if the ignition of the burner is
smooth when the heating unit operation is interrupted
by means of the thermostat, limit control or the power
venter proving switch. If the ignition is not smooth, the
burner should be readjusted as discussed earlier.
2.2.2) Proving switch test
This test must be performed to verify the normal
operation of the venting system proving switch. Block
the discharge of the power venter while the unit is
operating. Once the discharge is completely blocked,
the unit must stop. After removal of the blockage, the
unit must ignite smoothly. Should the proving switch
not work properly, you must change it. This proving
switch is not field adjustable and must be replaced
when working improperly.
2.2.3) Post-purge delay test
To test, simply let the unit run for a minimum of 5
seconds and then stop the cycle. The burner should
stop but the power venter should continue to operate
for another 5 minutes.
2.2.4) Back-flow damper interlock
switch test
Using a pair of pliers, hold the shaft of the damper in
place so the damper is blocked in the closed position.
Then, try to start the burner. The burner should not
come on until the damper is released from its
completely closed position.

9
PART 3
MAINTENANCE
3.1) MAINTENANCE
The power venter must be inspected bi-annually by a
qualified technician. The points of inspection are listed
below.
3.1.1) Motors
Both motors must rotate freely. Oil at the beginning
and the middle of the heating season with four drops of
special exterior oil suitable for –35oC (-30oF). To
access the motor, remove the cover of the fan-motor
assembly.
3.1.2) Blower wheel
Both blower wheels must be clean of soot, ash or any
other coating which might inhibit the flow of air.
Remove all foreign material from the vent before
operation. To access the blower wheels, remove the
fan-motor assembly cover and remove the blower
wheels by unscrewing the attachment to the blower.
3.1.3) Pressure switch
The pressure switch must operate freely. Ensure that
the thermostat is on and the oil burner is running.
Block the outlet of the vent-hood and check if the
burner stops immediately. If not, the proving switch is
defective and should be replaced. See Section 2.2.2.
3.1.4) Back-flow damper
The back-flow damper must be clean of soot, ash or
any coating which might inhibit the flow of air. Remove
all foreign material from the damper before operation.
To access the damper, simply remove it from the
connecting pipe. Be sure to replace it in the proper
position.

DNS-0225 Rev.A
DNS-0226 Rev.A
10
FIGURE 1
SMH system - General arrangement
FIGURE 2
Main system dimensions

11
DNS-0229 Rev.A
DNS-0227 Rev.A
DNS-0228 Rev.A
FIGURE 3
Location of the SMH system on the wall
Installation on a COMBUSTIBLE wall
FIGURE 4A
Installation on a NON-COMBUSTIBLE wall
FIGURE 4B

12
DNS-0230 Rev.C
DNS-0397 Rev.C
FIGURE 5A
AMI, AMT-IM and OLS 2 speeds, Beckett or Riello
AMT-SM and OLS 2 speeds, Beckett
FIGURE 5B

13
DNS-0231 Rev.C
DNS-0232 Rev.C
FIGURE 5C
AMI and HE 1 speed, Beckett
FIGURE 5D
AMI and HE 1 speed, Riello

14
DNS-0407 Rev.C
FIGURE 5E
AMT-SM and OSR 2 speeds, Riello

15
FIGURE 5F
AMP and OMB, Riello

16
FIGURE 5G
AMP and OMB, Beckett
DNS-0622 Rev.A

17
FIGURE 5H
FIGURE 5I
DNS-0238 Rev. B
LO-1MQH, LO-2M, FBR-1, LO-1M3M, MBP, MBP-F, MBP-2, CCC and MBP-U
BRF and BFF
DNS-0239 Rev.B

18
FIGURE 5J
FIGURE 5K
DNS-0233 Rev.D
DNS-0234 Rev. D
FIGURE 5J
HMT, HML, HMI and HMD with triple aquastat, Beckett or Riello
HMR, HML, HMT, HMI and HMD with double aquastat, Beckett

19
FIGURE 5L
DNS-0235 Rev. B
DNS-0240 Rev.C
AME and HME, Beckett
FIGURE 5M
Water heater, CMO32, CMO50, 30RB, 32E2, 50E2, IB-30, IB32-R and IB50-O, Beckett

20
DNS-0385 Rev. D
ITEM DESCRIPTION PARTS COMMENTS
1A Blower housing ass'y B01391-01 For SMH-1 and SMH-3
1B Blower housing ass'y B01391-02 For SMH-4, SMH-5 and SMH-6
2 Outlet blower insulation B00732-02
3 Inlet blower insulation B00732-01
4A Motor ass'y, SMH-1 and SMH-3 B01231-01 Includes motor, blower wheel
4B Motor ass'y, SMH-4, SMH-5 and SMH-6 B01231-02 Includes motor, blower wheel
5 Cover B01233-02
6 Motor junction box B00826
7 Junction box cover B00827
8A Outlet strip B01388-01 For SMH-1 and SMH-3
8B Outlet strip B01388-02 For SMH-4, SMH-5 and SMH-6
9A Outlet housing insulation B00619-04 For SMH-1 and SMH-3
9B Outlet housing insulation B00619-39 For SMH-4, SMH-5 and SMH-6
10A Inlet strip B01388-03 For SMH-1 and SMH-3
10B Inlet strip B01388-04 For SMH-4, SMH-5 and SMH-6
11A Intlet housing insulation B00619-05 For SMH-1 and SMH-3
11B Intlet housing insulation B00619-40 For SMH-4, SMH-5 and SMH-6
12 Cover support insulation B00733
13A Cover support B00705 For SMH-1 and SMH-3
13B Cover support B01074 For SMH-4, SMH-5 and SMH-6
14 Gasket, outlet pipe B01150 Brown, 1"
15 Gasket, outlet pipe B01044 White, 1/2"
16 Mounting plate ass'y B01232
17 Shield pipe insulation B00621-65
18 6" - 3 1/16" reducer B01298
19 Back flow damper ass'y B01002 Includes switch, cover and electrical wire
20 Limit switch SPDT A00249
21 Junction box divider plate, back flow damper B01314
22 Main junction box B00828
23 Main junction box cover B00829
24 Time delay relay B01131
25 Pressure raccording tube ass'y B02075 Includes tube and union
26 Pressure switch R99F046
27 Junction box ass'y B01228-01 Includes box, relay and pressure switch
28 1/25 HP blower motor L06J001
29 Spacers kit K07004 Kit of 6
30 Motor plates kit K07005 Kit of 2
31A Blower wheel 3.812 x 1.50 Z01G001 For SMH-1 and SMH-3
31B Blower wheel 3.812 x 2.50 Z01G002 For SMH-4, SMH-5 and SMH-6
32 Synthetic oil Z99F019
33 Conversion kit B04236 Includes support, relay and electrical wire
PARTS LIST
Model : SMH