Crown CHC68-96 - Manuals

5 INSTALLATION GUIDELINES Codes All local codes and regulations take precedence over the instructions in this manual and shall be followed accordingly. In the absence of local codes, this installation must conform to these instructions and to the regulations of the National Fire Protection Associati...

8 Often, household chemicals contain chloride-bearing compounds. There are many compounds representative of this classification of chemicals. A few common examples are listed below. • Cleaning solvents • Varnish and paint removers • Bleaches • Fabric softeners • Water softener salt • Tile adhesives ...

10 Chimney Inspection The chimney, vent, or any passageway for the stack gases to flow to the outdoor atmosphere is a very important part of the heating system. No furnace, regardless of the efficiency of the design, can perform satisfactorily when the chimney to which it is connected is inadequate ...

11 If desired, with the furnace flue elbow turned to the right, the standard furnace top front panel (p/n 52-17346-1) may be replaced with the top front panel from the rear flue lowboy model (p/n 52-17383-1). Refer to Appendix D: Replacement Parts for sketches of these parts. Contact your Crown dist...

12 Duct Work and Air Conditioning Design and installation of the duct system should follow the current guidelines of the Air Conditioning Contractors of America (ACCA) or the American Society of Heating, Refrigeration and Air Conditioning Engineers, Inc. (ASHRAE). Refer to the Residential Duct Syste...

On the highboy furnace, it is necessary to cut the return air opening in the lower side, or rear, of the casing depending upon the needs of the specific installation, refer to Figure 3. Figure 3: Cutaway view of fan section of a typical highboy furnace. The side casings have each been pre-punched wi...

14 Electrical Connections NOTICE: All field wiring must conform to local, state, and national installation codes. A disconnecting switch equipped with overcurrent protection rated at 15 A. (e.g. a time delay-type fuse or inverse time, circuit breaker) should be installed in the service line for shut...

15 The room thermostat should be located on an interior wall in the natural circulating path of the room air. The thermostat should not be installed in a location where it is directly exposed to, • cold air infiltration, i.e. drafts from outside openings such as windows and doors, • air currents pro...

Figure 4: Side view of correct burner insertion into combustion chamber 4) Push the burner flange gasket (included with the burner) on to the burner mounting plate threaded studs. Seat the gasket against the mounting plate. 5) Using fasteners supplied in the parts bag with each furnace, three (3) 5/...

Horizontal / Counterflow Furnace Setup The horizontal / counterflow furnace is shipped from the factory upright for vertical installation (counterflow configuration). If the furnace is to be installed lying down on the right-hand or left-hand side (horizontal configuration), the positions of the oil...

4) When the furnace is installed in the horizontal configuration, the high limit and fan control must also be located in the upper position on the casing when the furnace is placed in the final installed position, refer to Figure 7. If the control must be relocated, remove the cover of the control t...

21 INITIAL OPERATION OF THE FURNACE Initial Burner Operation c WARNING: To avoid possible explosion, DO NOT attempt to light the burner if: • Oil has accumulated in the base of the combustion chamber. • The furnace is full of fuel vapors. • The combustion chamber is very hot. c CAUTION: The oil burn...

10) Flue Gas Temperature – The flue gas temperature will vary depending on heat input rate, air temperature rise across the heat exchanger, and air flowrate through the furnace. To prevent excessive water vapor condensation from the flue gases, the gross flue gas temperature should not fall below 33...

One way to measure the temperature rise across the furnace is to insert temperature measuring devices (e.g. thermometers) into the return air duct and into the supply air duct about 12 inches from the furnace. After the furnace has been firing continually for over 20 minutes, read the temperature di...

25 Furnace Limit and Blower Controls All furnaces are equipped with a combined thermostatic high temperature limit and blower (fan) control. The high temperature limit is set such that it does not permit a supply (discharge) air temperature above 200ºF. The thermostatic fan control should be set so ...

26 Room Thermostat Most room thermostats are equipped with user adjustable, or selectable, levels of heat anticipation. This feature helps to reduce the amount of room air temperature overshoot that occurs after a heating cycle. To adjust the heat anticipator, measure the electrical current output o...

28 3) Confirm the room thermostat is wired correctly, set on the “HEAT” mode, and “calling for heat”. 4) For all primary controls, lockout can be confirmed by measuring voltage from the oil primary safety control to the burner motor. If none, depress the oil primary reset button. [On the Honeywell o...

30 6) Measure the draft at the point where the vent connector attaches to the heat exchanger flue pipe. With the burner operating, the stack draft should not exceed 0.05 in. W.G. If the stack draft has been adjusted above this value to give the proper overfire draft, the heat exchanger will require ...

31 Flame Sensor (“Cad Cell”) Checkout Procedure On the Honeywell oil primary control, to check the electrical resistance of the flame sensor (referred to as a cadmium sulfide photocell, or “cad cell”), depress the reset button on the oil primary safety control while the burner is firing. The oil pri...

32 On the Riello 40-F3 burner only, the cad cell is an integral part of the oil primary control. If replacement of the cad cell is required, the entire primary control must be replaced. Replacement Parts Appendix D of this manual contains a list of replacement parts available for these furnaces.

36 USERS INFORMATION c WARNING: • The area around the furnace should be kept free and clear of flammable vapors, liquids, and material, especially papers and rags. • NEVER burn garbage or refuse in the furnace. NEVER try to ignite oil by tossing burning papers or other material into the furnace. • T...

38 • Annually, have a bottom sample from the fuel oil tank taken for analysis. If present in excessive quantities, sludge and water should be removed. Fuel oil additives may be of benefit in helping to resolve some problems that are indicated by the analysis. In severe cases, tank cleaning may be re...

40 APPENDIX A: SOURCES FOR REFERENCED STANDARDS 1. Air Conditioning Contractors of America 1712 New Hampshire Avenue, N.W. Washington, D.C. 20009 http://www.acca.org/ 2. American Society of Heating, Refrigeration, and Air-Conditioning Engineers, Inc. 1791 Tullie Circle N.E. Atlanta, Georgia 30329 ht...

APPENDIX B: ELECTRICAL DIAGRAMS F or y our s a fety , r ead thi s i nfor m a ti o n b e for e o p e rat in g th is fu rnac e. W AR NI N G : Fa il u re t o f o llo w t h es e in s tru c tio ns m a y re s u lt in a f ir e or e x p los io n c a us in g pr op e rty d a m a g e , pe rs ona l inj u ry , o...

APPENDIX C: SPECIFICATION SHEETS M odelHeat Input Rate (BT UH): 140000 * 119,000 105,000 84,000 Nom inal T herm al Efficiency (% ):Heating Capacity (BT UH): 115000 * 98,000 87,000 70,000 Nom inal T em p. Rise (deg. F.):M inim um AFUE Rating (% ):G ross Heat Exchange Area (sq. ft.):Casing H eight (in...