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7

 

CAUTION 

When a 0.75 USGPH or smaller nozzle is used, a 10 micron or 
finer filter, must be installed on the oil supply line to the 
furnace inside the building where the unit is located. 
This is a requirement in order for the heat exchanger warranty 
to remain in force. 

Check your local codes for the installation of the oil tank and 
accessories. 

At the beginning of each heating season or once a year, check 
the complete oil distribution system for leaks. 

Ensure that the tank is full of clean oil. Use No.1 or No.2 
Heating Oil (ASTM D396 U.S.) or in Canada, use No.1 or No.2 
Furnace Oil. 

A manual shut-off valve and an oil filter shall be installed in 
sequence from tank to burner. Be sure that the oil line is clean 
before connecting to the burner. The oil line should be 
protected to eliminate any possible damage. Installations 
where the oil tank is below the burner level must employ a two-
pipe fuel supply system with an appropriate fuel pump. A rise 
of 2.4 m (8') and more requires a two stage pump and a rise 
greater than 4.9 m (16') an auxiliary pump. Follow the pump 
instructions to determine the size of pipe needed in relation to 
the rise or to the horizontal distance. 

2.9 DUCTING 

WARNING 

Poisonous carbon monoxide gas hazard. 

DO NOT draw return air from inside a closet or utility 
room. Return air MUST be sealed to the furnace casing. 

Failure to properly seal ducts can result in death, bodily 
injury and/or property damage. 

The ducting must be designed and installed according to 
approved methods, local and national codes as well as good 
trade practices. 

When ducting supplies air to a space other than where the 
furnace is located, the return air must be sealed and also be 
directed to the space other than where the furnace is located. 

2.9.1 Air 

filter 

A properly sized air filter must be installed on the return air 
side of the unit. Refer to the Technical Specifications, p.13, for 
the correct dimensions. Also refer to Section 2.3 and the 
instructions supplied with the filter. 

2.10 

SUPPLY AIR ADJUSTMENT (4 SPEED 
MOTOR) 

On units equipped with 4-speed blower motors, the supply air 
must be adjusted based on heating/air conditioning output and 
the static pressure of the duct system. For the desired air flow 
refer to the following table as well as the air flow tables based 
on static pressure in the Technical Specifications section of 
this manual. 

Table 1:  Blower speed adjustments (heating mode, 4 
speed motor) 

HEATING 

CAPACITY 

(USGPH) 

STATIC 

PRESSURE 

(W.C.) 

RECOMMENDED 
BLOWER SPEED 

0.90 

0.25” MED-LOW 

0.90 

0.50” MED-LOW 

1.10 

0.25” MED-HIGH 

1.10 

0.50” MED-HIGH 

 

Table 2:  Blower speed adjustments (A/C mode, 4 speed 
motor) 

A/C CAPACITY 

(TONS) 

RECOMMENDED 
BLOWER SPEED 

3.0 

LOW 

3.5 

MED-LOW 

4.0 

MED-HIGH 

5.0 

HIGH 

To effect the adjustment, the RED (for heating) and BLUE 
(for cooling and heat pump) wires can be changed on the 
motor. Also, refer to the position of the wires on the 
electronic board of the unit and consult the wiring 
diagrams. If the heating and air conditioning speeds are 
the same, the RED wire must be moved to “UNUSED 
LEADS” on the electronic board and the jumper provided 
with the BLUE wire must be used between the “HEAT” 
and “COOL” terminals. 

The blower start/stop delays can be adjusted by 
positioning the DIP switches on the electronic board as 
shown in the following figures. However, the 
recommended adjustments are 60 seconds blower ON 
delay and 2 minutes blower OFF delay.

 

Figure 5:  Blower "OFF" delay - Board #ST9103A 

 

Figure 6:  Blower start / stop delays - Board #1158 

 

Содержание AMT154SDMA

Страница 1: ...ke Qu bec www dettson ca Attention Do not tamper with the unit or its controls Call a qualified service technician INSTALLER SERVICE TECHNICIAN USE THE INFORMATION IN THIS MANUAL FOR THE INSTALLATION...

Страница 2: ...ply air Temperature Rise Test 10 3 3 8 Limit Control Check 10 3 3 9 Restart after burner failure 10 4 MAINTENANCE 10 4 1 CLEANING THE HEAT EXCHANGER 10 4 2 CLEANING THE BLOCKED VENT SHUT OFF DEVICE BV...

Страница 3: ...formation such as the model and serial numbers of the furnace WARNING Installations and repairs performed by unqualified persons can result in hazards to them and to others Installations must conform...

Страница 4: ...re the ambient and return air temperatures are above 15 C 60 F In addition the furnace should be installed as closely as possible to the vent so that the connections are direct and kept to a minimum T...

Страница 5: ...ired for Riello burners Refer to the burner control instruction manual and markings for proper adjustment of the post purge delay 2 5 VENTING WARNING Poisonous carbon monoxide gas hazard Never install...

Страница 6: ...equate supply of combustion air It is common practice to assume that older homes have sufficient infiltration to accommodate the combustion air requirement for the furnace However home improvements su...

Страница 7: ...ated the return air must be sealed and also be directed to the space other than where the furnace is located 2 9 1 Air filter A properly sized air filter must be installed on the return air side of th...

Страница 8: ...heating or air conditioning mode This signal can be used to activate an electronic air cleaner that is not equipped with an air flow switch If the cleaner is equipped with an air flow switch the S te...

Страница 9: ...of the oil piping and pump Slowly close and tighten the bleed screw Once closed the flame will light up 3 3 2 Pressure adjustment The oil pressure must be adjusted according to the Technical Specifica...

Страница 10: ...burner should restart after a few minutes The time required for the restart also depends on the adjustment of the blower OFF delay 3 3 9 Restart after burner failure 1 Set the thermostat lower than r...

Страница 11: ...uction inside the heat transfer tube 7 Re mount lock and fasten the control box with the 2 screws removed in step 4 8 Re attach the assembly cover with the screws removed in step 2 9 Re establish powe...

Страница 12: ...vice telephone Day Night Dealer name and address START UP RESULTS Nozzle Pressure lb po 2 Burner adjustments Primary air Fine air Drawer Assembly CO2 Smoke scale Bacharach Gross stack temperature F Am...

Страница 13: ...n 87 5 86 2 87 5 86 2 Volts Hertz Phase Rated current Amps Minimum ampacity for wire sizing Amps Max fuse size Amps Control transformer VA External control power available Heating VA Cooling VA Heatin...

Страница 14: ...Time ShortRun On Delay CFM Level Time Off Delay CFM Level Time A 1 OFF 2 OFF 0 90 13 45 sec 44 30 sec 38 3 min B 1 ON 2 OFF 1 10 13 30 sec 44 30 sec 38 3 min C 1 OFF 2 ON 1 10 13 30 sec 50 30 sec 38...

Страница 15: ...WITH AIR FILTER Table 10 Minimum clearances from combustible material LOCATION APPLICATION CLEARANCES combustible materials RECOMMANDED ACCESS FOR SERVICE FURNACE 2 54 cm 1 0 6 m 24 SUPPLY PLENUM WIT...

Страница 16: ...16 Figure 7 Furnace Dimensions...

Страница 17: ...17 Figure 8 Wiring Diagram 4 Speed Motor PSC...

Страница 18: ...18 Figure 9 Wiring Diagram Variable Speed Motor ECM...

Страница 19: ...19 Figure 10 Parts List With 4 Speed motor PSC B50095B...

Страница 20: ...TERIOR 33 F06F015 ZINC WASHER 1 7 16 34 Z99F061 SIGHT GLASS FOR HEAT EXCHANGER 35 Z06G001 BLOCKED VENT SHUT OFF BVSO 225 36 B03675 GASKET SMOKE OUTLET 37 B03765 CLEAN OUT ASSEMBLY Item 36 included 38...

Страница 21: ...21 Figure 11 Parts List With variable speed motor ECM B50096C...

Страница 22: ...ELECTRICAL BOX COVER Panel only 32 B03118 01 ELECTRICAL KIT BVSO EXTERIOR 33 F06F015 ZINC WASHER 1 7 16 34 Z99F061 SIGHT GLASS FOR HEAT EXCHANGER 35 Z06G001 BLOCKED VENT SHUT OFF BVSO 225 36 B03675 G...

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