Page 2 - INTRODUCTION; Step 1 — Check Equipment; except; Step 3 — Field Fabricate Ductwork
2 or death. WARNING signifies hazards which could result in per- sonal injury or death. CAUTION is used to identify unsafe practic- es which may result in minor personal injury or product and prop- erty damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliabi...
Page 5 - LARGE CURB; SMALL CURB; IMPORTANT; : Do not install large base pan HYBRID HEAT
5 C B A F D E LARGE CURB C B A F D E SMALL CURB ROOF CURB DETAIL Wood nailer* Roofcurb* Insulation(field supplied) *Provided with roofcurb Cant stripfield supplied Roofing materialfield supplied Flashing fieldsupplied HVAC unitbase rails Roofcurb SealingGasket HVAC unitbasepan Anchor screw A09090 A0...
Page 6 - Step 5 — Rig and Place Unit; PERSONAL INJURY OR PROPERTY DAMAGE; Inspection; UNIT FALLING HAZARD; WARNING; PROPERTY DAMAGE HAZARD; WARNING
6 ACCESS PANELS MUST BE IN PLACE WHEN RIGGING. PANNEAUX D'ACCES DOIT ÊTRE EN PLACE POUR MANIPULATION. 50CY502286 2.0 CAUTION - NOTICE TO RIGGERSPRUDENCE - AVIS AUX MANIPULATEUR Use top skid as spreader bar. / Utiliser la palette du haut comme barre de répartition SEAL STRIP MUST BE INPLACE BEFORE PL...
Page 7 - Step 6 — Connect Condensate Drain; Step 7 — Install Flue Hood; NOTE; Step 8 — Install Gas Piping; NOTE
7 3. Attach a clevis of sufficient strength in the middle of the straps. Adjust the clevis location to ensure unit is lifted level with the ground. After the unit is placed on the roof curb or mounting pad, remove the top skid. Step 6 — Connect Condensate Drain NOTE : When installing condensate drai...
Page 8 - Step 9 — Install Duct Connections; Configuring Units for Downflow (Vertical) Discharge
8 OUT TEE NIPPLE CAP IN C99020 Fig. 7 -- Sediment Trap 5. Install an accessible, external, manual main shutoff valve in gas supply pipe within 6 ft (1.8 m) of heating section. 6. Install ground--joint union close to heating section between unit manual shutoff and external manual main shut--off valve...
Page 10 - Table 2 – Maximum Gas Flow Capacity*; Table 3 – Heating Inputs
10 Table 1 -- Physical Data -- Unit 677C-- --A Cont’d) UNIT SIZE 48090 48115 48130 60090 60115 60130 NOMINAL CAPACITY --- ton 4 4 4 5 5 5 SHIPPING WEIGHT --- lb (kg) 513 233 513 233 513 233 543 246 543 246 546 246 COMPRESSORS Scroll Quantity 1 REFRIGERANT (R --- 410A) Quantity --- lb (kg ) 17.0 7.7 ...
Page 11 - Step 10 — Install Electrical Connections; UNIT COMPONENT DAMAGE HAZARD; CAUTION; ELECTRICAL SHOCK HAZARD; ELECTRICAL SHOCK HAZARD; Then; Control Voltage Connections
11 4. All units must have field--supplied filters or accessory filter rack installed in the return--air side of the unit. Recommended sizes for filters are shown in Table 1. 5. Size all ductwork for maximum required airflow (either heating or cooling) for unit being installed. Avoid abrupt duct size...
Page 12 - Balance Point Setting--Thermidistat or Hybrid
12 more than 100 ft (30.5 m) from the unit (as measured along thecontrol voltage wires), use no. 16 AWG color--coded, insulated (35 _ C minimum) wires. Locate the seven (eight on 3--phase) low voltage thermostat leads in 24 volt splice box. See Fig. 10 for connection diagram. Run the low--voltage le...
Page 13 - Step 1 — Check for Refrigerant Leaks; Heating Sequence of Operation; ments
13 e. Ensure wires do not touch refrigerant tubing or sharp sheet metal edges. f. Inspect coil fins. If damaged during shipping and handling, carefully straighten fins with a fin comb. FIRE, EXPLOSION HAZARD Failure to follow this warning could result in personal injury, death or property damage.Do ...
Page 14 - Check Heating Control; UNIT DAMAGE HAZARD; Adjust Gas Input
14 Pipe Plug Manifold A07679 Fig. 11 -- Burner Assembly MANIFOLD BURNER BURNER FLAME C99021 Fig. 12 -- Monoport Burner Check Heating Control Start and check the unit for proper heating control operation as follows (see furnace lighting instructions located on the inside ofthe control access panel: 1...
Page 15 - Measure Manifold Pressure (Propane Units); Check Burner Flame
15 REGULATOR COVER SCREW ADJUSTMENTSCREW REGULATOR SPRING(PROPANE - WHITE) NATURAL - SILVER) GAS PRESSURE REGULATOR ADJUSTMENT MANIFOLD PRESSURE TAP INLET PRESSURE TAP ON/OFF SWITCH PLASTIC ( A07751 Fig. 13 -- Single--Stage Gas Valve If larger adjustments are required, change main burner orificesfol...
Page 16 - Rollout Switch; Checking Cooling Control Operation; Indoor Airflow and Airflow Adjustments
16 completes the control circuit. The direct--spark ignition systemcycles and the unit returns to normal heating operation. Table 5 – LED Indications STATUS CODE LED INDICATION Normal Operation 2 On No Power Hardware Failure Off Limit Switch Fault 2 Flashes Flame Sense Fault 3 Flashes Four Consecuti...
Page 17 - Gas Heating Fan Speed Set-up; Continuous Fan Operation; Table 6 – Color Coding for Indoor Fan Motor Leads
17 ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death.Before making any indoor wiring adjustments, shut off gas supply. Then disconnect electrical power to the unit and install lockout tag before changing blower speed. ! WARNING This unit has independent ...
Page 27 - MAINTENANCE; Air Filter
27 MAINTENANCE To ensure continuing high performance and to minimize the possibility of premature equipment failure, periodic maintenancemust be performed on this equipment. This combination heating/cooling unit should be inspected at least once each year bya qualified service person. To troubleshoo...
Page 29 - Outdoor Fan; Electrical Controls and Wiring
29 BLOWER HOUSING 2 SETSCREWS (HIDDEN) C99085 Fig. 20 -- Removal of Motor and Blower Wheel A07680 Fig. 21 -- Burner Rack Removed FEEDER TUBE STUB TUBE DEFROST THERMOSTAT C99029 Fig. 22 -- Defrost Thermostat Location Outdoor Fan UNIT OPERATION HAZARD Failure to follow this caution may result in damag...
Page 32 - HPS – High Pressure Switch; LEGEND; Accurater; Refrigerant System
32 COMPRESSOR ACCUMULATOR OUTDOOR COIL INDOOR COIL LCS LEGEND HPS – High Pressure Switch LCS – Loss of Charge Switch Accurater ® Metering De vice Arrow indicates direction of flo w TXV in Metering Position Bypass Position HP S C03011 Fig. 25 -- Typical Heat Pump Operation, Cooling Mode COMPRESSOR AC...
Page 33 - TROUBLESHOOTING
33 replacing refrigerant components such as filter drier, pressureswitch, metering device, coil, accumulator, or reversing valve. Synthetic Roof Precautionary Procedure 1. Cover extended roof working area with an impermeable polyethylene (plastic) drip cloth or tarp. Cover anapproximate 10x10 ft (3x...
Page 34 - Table 11 – Troubleshooting Guide -- Cooling or Heat Pump Heating Mode
34 Table 11 – Troubleshooting Guide -- Cooling or Heat Pump Heating Mode SYMPTOM CAUSE REMEDY Compressor and Outdoor fan will not start. Power Failure Call power company. Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or con...