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NORMAL MAINTENANCE

CAUTION: Prior to any of the following maintenance proce-

dures, shut off all power to the unit to prevent
personal injury.

Periodic maintenance normally consists of changing or cleaning
filters and (under some conditions) cleaning the main burners.

FILTERS - Inspect once a month. Replace disposable or clean
permanent type as necessary. DO NOT replace permanent type
with disposable.

MOTORS - Indoor fan and outdoor fan motors are permanently
lubricated and require no maintenance. Ventor motor is factory
lubricated for an estimated 10 year life.

OUTDOOR COIL - Dirt should not be allowed to accumulate on
the outdoor coil surface or other parts in the air circuit. Cleaning
should be as often as necessary to keep coil clean. Use a brush,
vacuum cleaner attachment, or other suitable means. If water
is used to clean coil, be sure power to the unit is shut off prior
to cleaning.

NOTE: Exercise care when cleaning the coil so that the coil fins

are not damaged.

Do not permit the outdoor air discharge to be obstructed
by overhanging structures of shrubs.

BURNER & PILOT - Periodically (at least annually at the
beginning of each heating season) make a visual check of the
pilot and main burner flame. If necessary, adjust main burner
primary air shutters so that no yellow flame is observed as
explained under “BURNER AIR SHUTTER ADJUSTMENT”. If
it is not possible to adjust for the proper flame, the burners may
need cleaning.

TO CLEAN BURNERS - Remove them from the furnace as
explained in “Burner Instructions”. Clean burners with hot water
applied along top of the burner.

COMBUSTION AIR DISCHARGE - Visually inspect discharge
outlet periodically to make sure that the buildup of soot and dirt
is not excessive. If necessary, clean to maintain adequate
combustion air discharge.

CLEANING FLUE PASSAGES AND HEATING
ELEMENTS

With proper combustion adjustment the heating element of a
gas fired furnace will seldom need cleaning. If the element
should become sooted, it can be cleaned as follows:

1. Remove the burner assembly as outlined in “BURNER

INSTRUCTIONS”.

2. Remove the roof over the gas heat section.

3. At the top front of the heat section, remove the screws

holding the top of the flue collector box. Carefully remove
the top of the flue collector box without ripping the adjacent
insulation.

4. On the inside of the flue collector box, remove the flue baffle

from the tube interiors.

5. Using a wire brush on a flexible wand, brush out the inside

of each heat exchanger from the burner inlet and flue outlet
ends.

6. Brush out the inside of the flue collector box and the flue

baffles.

7. Run the wire brush down the vent tube from the flue collector

end.

8. If soot build-up is particularly bad, remove the vent motor

and clean the wheel and housing. Run the wire brush down
the flue extentions at the outlet of the vent housing.

9. After brushing is complete, blow all brushed areas with air

or nitrogen. Vacuum as needed.

10. Replace parts in the order they were removed in Steps 1

through 4.

11. When replacing the top of the flue collector box, be careful

so as not to tear the adjoining insulation.

12. Assure that all seams on the vent side of the combustion

system are air tight. Apply a high temperature (+500

°

F)

sealing compound where needed.

MAINTENANCE

530.18-N10Y

18

Unitary Products Group

Summary of Contents for Sunline 2000 D3CG090

Page 1: ...ccessory 530 18 N10 5V Propane Conversion Accessory USA 530 18 N10 6V High Altitude Accessory Nat Gas 530 18 N10 7V High Altitude Accessory Propane 690 15 N28V Low Ambient Accessory Renewal Parts Refer to the Renewal Parts Manual for complete listing of replacement parts on this equipment All forms referenced in this instruction may be ordered from Publications Distribution Center Unitary Products...

Page 2: ... Gas Heat Application Data 5 3 Pipe Sizing 5 4 Physical Data 8 5 Point Loads 10 6 Supply Air Blower Perf 7 1 2 10 Ton 11 7 Supply Air Blower Perf 12 1 2 Ton 12 8 Accessory Static Resistances 12 9 Blower Motor and Drive Data 12 10 Electrical Data 13 11 Limit Control Setting 14 12 Blower Motor Pulley Adjustment 16 13 Gas Rate Cubic Feet Per Hour 17 FIGURES No Description Page 1 Center of Gravity 3 2...

Page 3: ...ing must be applied to all surfaces that come in contact with the unit underside 5 Maintain level tolerance to 1 2 maximum across the entire length or width of the unit RIGGING AND HANDLING Exercise care when moving the unit Do not remove any packaging until the unit is near the place of installation Rig the unit by attaching chain or cable slings to the lifting holes provided in the base rails Sp...

Page 4: ... above the floor where it will not be subject to drafts sun exposure or heat from electrical fixtures or appliances Follow manufacturer s instructions enclosed with thermostat for general installation procedure Seven color coded insulated wires 18 AWG should be used to connect thermostat to unit POWER AND CONTROL WIRING Field wiring to the unit must conform to provisions of the National Electrical...

Page 5: ...cases unless superseded by local codes or gas company requirements The heating value of the gas may differ with locality The value should be checked with the local gas utility NOTE There may be a local gas utility requirement specifying a minimum diameter for gas piping All units require a 1 2 or 3 4 inch pipe connection at the gas valve GAS CONNECTION The gas supply line can be routed through the...

Page 6: ...n three main factors 1 The vaporization rate which depends on a the temperature of the liquid and b the wetted surface area of the container or containers 2 The proper pressure regulation Two stage regulation is recommended from the standpoint of both cost and effi ciency 3 The pressure drop in the lines between regulators and between the second stage regulator and the appliance Pipe size required...

Page 7: ...sing 6 gasketed screws in each side plate 4 Secure the flange on the hood cover to the duct panel with 3 screws Use holes in the cover flange as a template and drill 3 holes 9 64 dia 26 drill into the duct panel 5 Insert two 2 1 filters into the center of the hood coming to rest in the center filter support at the back of the hood Press filters up against the filter guide angles on the side plates...

Page 8: ...er Unit PROPELLER DIA in 24 ea 24 ea 24 ea 24 ea FAN MOTOR HP 1 2 ea 1 2 ea 1 2 ea 3 4 ea NOM CFM TOTAL 2900 ea 3200 ea 3600 ea 4400 ea CONDENSER COIL ROWS DEEP 2 2 2 2 FINS PER INCH 13 13 13 13 FACE AREA Sq Ft 16 7 20 0 24 0 29 3 AIR FILTERS SEE NOTE QUANTITY PER UNIT 12 X 24 X 2 2 2 QUANTITY PER UNIT 16 X 24 X 2 2 2 2 3 QUANTITY PER UNIT 18 X 24 X 2 2 2 TOTAL FACE AREA sq ft 9 3 9 3 11 3 14 0 CH...

Page 9: ... in the insulation UTILITIES ENTRY DATA RETURN AIR OUTDOOR AIR Economizer SUPPLY AIR CONDENSER AIR DUCT COVERS Units are shipped with all air duct openings covered For side duct applications 1 Remove and discard the supply and return air duct covers 2 Connect ductwork to duct flanges on the rear of the unit For bottom duct applications 1 Remove the side supply and return air duct covers to gain ac...

Page 10: ...ht Side Cond Coil 24 Below Unit1 20 Above Unit2 72 with 36 maximum Horizontal Overhang For Condenser Air Discharge 1 Locate unit so that the vent air outlet hood is at least Three 3 feet above any forced air inlet located within 10 horizontal feet excluding those integral to the unit Four 4 feet below 4 horizontal feet from or 1 foot above any door or gravity air inlet into the building Four 4 fee...

Page 11: ...39 1 54 1 44 0 04 1 75 1 63 1070 0 86 1 46 1 36 0 54 1 68 1 57 0 20 1 89 1 76 0 04 2 11 1 97 1130 1 07 1 57 1 46 0 73 1 83 1 71 0 39 2 04 1 90 0 13 2 22 2 06 1175 1 27 1 67 1 56 0 94 1 92 1 79 0 58 2 18 2 03 0 28 2 34 2 16 1220 1 44 1 81 1 69 1 10 2 10 1 96 0 66 2 37 2 15 0 36 2 78 2 56 MODEL DCG102 BOTTOM DUCT APPLICATIONS BLOWER SPEED RPM CFM 3000 3500 4000 4500 5000 ESP BHP KW ESP BHP KW ESP BH...

Page 12: ... 54 0 11 3 03 2 83 1000 1 20 2 33 2 17 0 93 2 62 2 45 0 65 2 91 2 72 0 35 3 24 3 03 0 16 4 20 3 91 1050 1 42 2 55 2 37 1 14 2 86 2 67 0 85 3 17 2 96 0 62 4 06 3 79 0 39 4 53 4 22 1090 1 63 2 72 2 54 1 34 3 06 2 86 1 10 3 78 3 53 0 78 4 28 3 99 0 58 4 79 4 46 1105 1 74 3 08 2 87 1 47 3 45 3 22 1 18 3 88 3 62 0 85 4 35 4 06 0 66 4 89 4 56 1140 1 91 3 25 3 03 1 63 3 66 3 41 1 35 4 11 3 83 1 02 4 53 4...

Page 13: ...frigerant charge Opens at 7 psig 3 and resets at 22 psig 5 If either one of the above safety controls opens that individual refrigerant system will bo locked out The other refrigerant system will continue in operation unless it too is effected by the same fault The lock out of either system can be reset by opening the 24V circuit either at the room thermostat or at the unit disconnect HEATING SEQU...

Page 14: ...tes when a high temperature condition caused by inadequate supply air flow occurs thus shutting down the ignition control and closing the main gas valve and energizing the blower 2 Centrifugal Switch CS If the draft motor should fail the centrifugal switch attached to the shaft of the motor pre vents the ignition control and gas valve from being ener gized 3 Redundant Gas Valve This valve is an in...

Page 15: ...ows 1 Remove the cap on the regulator It s located next to the push on electrical terminals 2 To decrease the gas pressure turn the adjusting screw coun terclockwise 3 To increase the gas pressure turn the adjusting screw clock wise NOTE The correct manifold pressure for these furnaces is 3 5 IWG 0 3 PILOT CHECKOUT The pilot flame should envelope the end of the flame sensor as shown in Proper Flam...

Page 16: ...ted 1 Remove the dot plugs from the holes in the filter access and blower access panels as shown in the Dimensions and Clearances figure 2 Insert at least 8 of 1 4 inch tubing into each of these holes for sufficient penetration into the air flow on both sides of the evaporator or indoor coil NOTE The tubes must be inserted and held in a position perpendicular to the air flow so that velocity pres ...

Page 17: ...being made for the permissible range of the regulator setting replace the orifice spuds with spuds of the proper size CFM Btuh Input x 0 8 1 08 x o F Temp Rise SECURE OWNER S APPROVAL When the system is functioning properly secure the owner s approval Show him the location of all disconnect switches and the thermostat Teach him how to start and stop the unit and how to adjust temperature settings ...

Page 18: ...pplied along top of the burner COMBUSTION AIR DISCHARGE Visually inspect discharge outlet periodically to make sure that the buildup of soot and dirt is not excessive If necessary clean to maintain adequate combustion air discharge CLEANING FLUE PASSAGES AND HEATING ELEMENTS With proper combustion adjustment the heating element of a gas fired furnace will seldom need cleaning If the element should...

Page 19: ...t effect the test if it is done within 5 minutes of furnace shut down 2 The supply air blower operates but the draft motor does not when the room thermostat is set to call for heat and the fan switch in the ON position a The draft motor has inherent protection If the motor shell is hot to the touch wait for the internal overload to reset b If the motor shell is cold with the room thermostat callin...

Page 20: ...arryover as described in PILOT CHECKOUT b Make sure that the carryovers on adjoining burners are screwed fast and are level with respect to one another 9 Main burners light but exhibit erratic flame characteristics a Adjust air shutters as described in BURNER AIR SHUTTER ADJUSTMENT b Check the main burner orifices for obstruction and alignment Removal procedure is described in BURNER INSTRUCTIONS ...

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