background image

Door adjustment procedure: 
 
 
1. Unscrew completely the locking pin (see picture below). 
 

 
 

Locking pin 

2.  To increase the pressure of the door on the gasket, turn the handle counter clockwise;  to decrease the pressure 

on the door on the gasket, turn the handle clockwise. 

 
3.  Finally, screw back the locking pin about 1/4” deep, make sure you lock it in place with the nut. 
 
 

6. REPLACEMENT 

PARTS

 

 
Your HOTBLAST furnace is designed to burn clean and require little maintenance.  It’s recommended to conduct a 
visual inspection at least once a month to uncover any damage on the unit.  Make necessary repairs as soon as 
possible with genuine Hotblast replacement parts.   
 
 

DOOR GLASS 

• 

Inspect the glass regularly to detect any breakage or failure.  If you find any defect, stop the furnace 
immediately.  Never operate a furnace with a broken glass. 

• 

If you have to change your door glass, you must use Pyroceram 3/16”(5mm) thick glass available at your 
HOTBLAST authorized dealer. 

• 

To replace the glass, remove screws that hold the glass retainers in place.  Remove these retainers and 
replace the glass.  The glass gasket should be replaced at the same time.  To put back in place, follow the 
same procedure backwards. 

• 

Do not use an abrasive cleanser.  Special cleansers for wood stoves glass are available in any good 
hardware store. 

• 

Clean glass 

ONLY

 when the unit has cooled down. 

 

GASKET 

 
We recommend to replace the gasket that seals the door once a year, in order to maintain a good control of the 
combustion for maximum efficiency and security.  To replace your door gasket, remove the old gasket and glue.  
Clean the surface thoroughly, apply glue sold for that particular use, and put the new gasket onto the door.  Wait for 
at least 2 hours before lighting your furnace. 

 

14

Summary of Contents for HOTBLAST 1950

Page 1: ...Testing Services Distributed by UNITED STATES STOVE COMPANY 227 INDUSTRIAL PARK ROAD P O BOX 151 SOUTH PITTSBURG TN 37380 Tel 423 837 2100 Fax 423 837 2109 8BDC3 Tm TjETEMC P 41302957 1302957 1302957...

Page 2: ...ECTRICAL CONNECTION 8 3 6 THERMOSTAT 8 3 7 FAN CONTROL 8 4 OPERATING INSTRUCTIONS 9 4 1 LIGHTING 9 4 2 PREHEATING 9 4 3 HEATING 10 4 3 1 EARLY SIGNS OF OVERFIRED FURNACE 10 4 3 2 WOOD AS HEATING FUEL...

Page 3: ...anges in the warm air bonnet of the furnace see General Technical Data static pressure 1 CHIMNEY AND DRAFT This furnace must be connected to a chimney certified for wood burning heating appliances a 7...

Page 4: ...the chimney cleaning buy your firewood at least one year before using it Store it in a dry place in order to obtain the minimum moisture content and optimize its efficiency Do not store wood or combus...

Page 5: ...eaners are available on the market and their efficiency makes no doubt WARNING Avoid knocking or scratching the glass which could be damaged 2 6 1 GLASS SPECIFICATIONS The glass is made of Pyroceram t...

Page 6: ...e connector is as short as possible minimize the use of 90o elbows The owner must ensure a proper installation to allow a safe operation of the appliance 3 2 CLEARANCES TO COMBUSTIBLE MATERIALS N B Th...

Page 7: ...raft exceed 0 06 in W C a barometric damper should be installed on the smoke pipe Never install a manual damper REDUCER DIAMETER 7 For a proper installation follow the advices below 1 All the joints o...

Page 8: ...hat a house constructed or renovated in order to be airtight is liable to lack fresh air necessary for a proper combustion and operation of flame producing heating appliance In such a case when starti...

Page 9: ...6 THERMOSTAT The thermostat must be installed on an inside wall in a location where it is not likely to be affected by the draft coming from an air outlet It must be installed at a minimum of 55 inche...

Page 10: ...ating 2 Remove the steel plate on the ash grid and dump the ashes in the ash drawer 3 Put the steel plate back in place making sure it is properly seated The steel plate on the ash grid is intended to...

Page 11: ...THE PURPOSE IS TO STABILIZE THE PRESSURE INSIDE THE FURNACE 4 3 1 EARLY SIGNS OF OVERFIRED FURNACE 1 Roaring fire 2 Chimney connector is glowing red 3 Extreme heat coming from the furnace 4 If this oc...

Page 12: ...anches or small pieces of wood can ignite the creosote residues accumulated in the evacuation flue system The usual signs are 1 Rumbling 2 The flue gets extremely hot 3 Sparks are coming out of the ch...

Page 13: ...e exchanger pipes move the upper plate of the combustion chamber forward Using the scraper clean the three exchanger pipes The accumulated dirt in the lateral exchangers will fall into the combustion...

Page 14: ...e otherwise it must be replaced Use only wood as a combustible Seasoned hard wood logs 18 to 22 long are recommended as a combustible 5 3 MAINTENANCE OF THE BLOWER MOTOR The two bearings of the motor...

Page 15: ...ediately Never operate a furnace with a broken glass If you have to change your door glass you must use Pyroceram 3 16 5mm thick glass available at your HOTBLAST authorized dealer To replace the glass...

Page 16: ...LOW L2 120 V A C L1 BLACK TRANSFO JUNCTION BOX 24 V A C 24 V A C THERMOSTAT SERVO MOTOR RED BLACK WHITE BLACK BLACK 24 V A C 120 V A C TRANSFORMER SWITCH MOVE THIS WIRE TO CHANGE MOTOR SPEED REVISION...

Page 17: ...DIRECT DRIVE OUTPUT TEMP VAR BTU HR STATIC PRESSURE FILTER FAN MOTOR SPEED CFM O F WOOD MIN MAX 2 H2O HOTBLAST 1950 DD 10 1 3 3 or 4 1300 78 140000 0 2 0 6 12 x 24 X 1 8 2 TECHNICAL DATA ELECTRIC CON...

Page 18: ...t 2 x 12 damper or 4 x 10 For a 6 warm air outlet 2 x 14 damper or 4 x 12 WARM AIR SYSTEM INSTALLATION HOUSE DIMENSIONS Example 28 x 40 bungalow 1 120 sq ft 28 x 40 x 8 8 960 cu ft x 1 8 Ch air hr 16...

Page 19: ...5 8 9 6 3 8 9 4 1 4 7 1 2 1 1 2 1 1 4 3 1 8 6 3 1 5 9 7 9 9 9 8 6 7 7 7 7 7 7 7 7 7 6 6 6 6 2 2 7 7 7 7 7 7 7 7 7 7 4 ITEM PART DESCRIPTION QTY 1 BRICK 4 1 4 X 9 SPECIAL 1 2 BRICK 4 1 2 X 7 5 8 2 3 B...

Page 20: ...to the damper motor Rebalance the ventilation system in order to increase the air flow in the room where the thermostat is located Fan start up is too slow Fan ON setting too high Return air is too co...

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