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R-410A
ZJ SERIES
3 - 5 Ton
60 Hertz
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Preceding Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging And Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Compressors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Power And Control Wiring. . . . . . . . . . . . . . . . . . . . . . . . . 17
Optional Electric Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Optional Gas Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Options/Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Economizer Interface Overview . . . . . . . . . . . . . . . . . . . . 31
Airflow Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Air Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
1 ZJ037-061 Unit Limitations . . . . . . . . . . . . . . . . . . . . . . . . 7
2 Weights and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 8
3 ZJ037-061 Unit Accessory Weights . . . . . . . . . . . . . . . . . 8
4 ZJ037-061 Unit Physical Dimensions . . . . . . . . . . . . . . . 11
5 ZJ037-061 Unit Clearances . . . . . . . . . . . . . . . . . . . . . . 11
6 Side Duct Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
7 Control Wire Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9 Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
10 Electric Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . 27
11 Gas Pipe Sizing - Capacity of Pipe . . . . . . . . . . . . . . . . . 28
12 Gas Heat Minimum Supply Air . . . . . . . . . . . . . . . . . . . . 29
13 Single Enthalpy and Dual Enthalpy High Limit Curves. . 32
14 Supply Air Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
15 Altitude/Temperature Correction Factors . . . . . . . . . . . . 34
1 Unit Shipping Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Condenser Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Compressor Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
®
4 Predator
Component Location (ZJ037 Shown) . . . . . . . 6
5 Unit 4 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
6 Unit 6 Point Load Weight . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Center of Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
8 ZJ037 - 049 Physical Dimensions . . . . . . . . . . . . . . . . . . 9
9 ZJ061 Physical Dimensions . . . . . . . . . . . . . . . . . . . . . . 10
10 ZJ037-061 Unit Bottom Duct Openings . . . . . . . . . . . . . 12
11 ZJ037-061 Unit Electrical Entry . . . . . . . . . . . . . . . . . . . 13
12 ZJ037-061 Unit Side Duct Openings . . . . . . . . . . . . . . . 13
13 ZJ037-061 Unit Left Duct Opening . . . . . . . . . . . . . . . . 14
14 ZJ037-061 Roof Curb . . . . . . . . . . . . . . . . . . . . . . . . . . 14
15 ZJ037-061 Transition Roof Curb . . . . . . . . . . . . . . . . . . 15
16 Side Panels With Hole Plugs . . . . . . . . . . . . . . . . . . . . . 15
TABLE OF CONTENTS
Checking Air Quantity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cooling Sequence Of Operation . . . . . . . . . . . . . . . . . . . . 43
No Outdoor Air Options . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cooling Operation Errors . . . . . . . . . . . . . . . . . . . . . . . . 43
Electric Heating Sequence Of Operations . . . . . . . . . . . . 45
Electric Heat Operation Errors . . . . . . . . . . . . . . . . . . . . 45
Gas Heating Sequence Of Operations . . . . . . . . . . . . . . . 46
Ignition Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Gas Heating Operation Errors . . . . . . . . . . . . . . . . . . . . 46
Start-Up (Cooling) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Start-Up (Gas Heat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Checking Gas Heat Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Charging The Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Fan On And Off Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
LIST OF TABLES
16 Airflow Performance - Side Duct Application . . . . . . . . . 37
17 Airflow Performance - Bottom Duct Application . . . . . . . 38
18 RPM Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
19 Indoor Blower Specifications . . . . . . . . . . . . . . . . . . . . . . 39
20 Power Exhaust Specifications . . . . . . . . . . . . . . . . . . . . 39
21 Motor Sheave Datum Diameters . . . . . . . . . . . . . . . . . . 41
22 Additional Static Resistance . . . . . . . . . . . . . . . . . . . . . . 42
23 Electric Heat Limit Setting . . . . . . . . . . . . . . . . . . . . . . . . 45
24 Electric Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . 46
25 Gas Heat Anticipator Setpoints . . . . . . . . . . . . . . . . . . . . 48
26 Gas Rate Cubic Feet Per Hour . . . . . . . . . . . . . . . . . . . . 50
27 Gas Heat Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
28 Unit Control Board Flash Codes . . . . . . . . . . . . . . . . . . . 56
29 Ignition Control Flash Codes . . . . . . . . . . . . . . . . . . . . . . 56
LIST OF FIGURES
17 Return Downflow Plenum With Panel . . . . . . . . . . . . . . 16
18 Discharge Panel In Place . . . . . . . . . . . . . . . . . . . . . . . . 16
19 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
20 Field Wiring Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . 18
21 Typical Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . 19
22 Side Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . 28
23 Bottom Entry Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . 28
24 Economizer LCD and Keypad Layout. . . . . . . . . . . . . . . 31
25 Single Enthalpy Curve And Boundaries . . . . . . . . . . . . . 32
26 Belt Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
27 Altitude/Temperature Correction Factors . . . . . . . . . . . . 35
28 Dry Coil Delta P . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
29 Typical Flame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
30 Typical Two Stage Gas Valve . . . . . . . . . . . . . . . . . . . . 51
31 Typical Single Stage Gas Valve . . . . . . . . . . . . . . . . . . . 51
32 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
689665-YIM-D-0614
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Related Manuals for Johnson Controls Unitary Products ZJ Series
Summary of Contents for Johnson Controls Unitary Products ZJ Series
- Page 1 R-410A ZJ SERIES 3 - 5 Ton 60 Hertz TABLE OF CONTENTS General ......... . 2 Checking Air Quantity .
- Page 2 Be sure to follow all other applicable safety precautions and codes including ANSI Z223.1 or CSA- B149.1- latest edition. Wear safety glasses and work gloves. Use quenching cloth and have a fire extinguisher available during brazing operations. Johnson Controls Unitary Products...
- Page 3 • Manual Outdoor Air Damper (0-35%) • Gas Heat Propane Conversion Kit • Gas Heat High Altitude Kit (Natural Gas) • Gas Heat High Altitude Kit (Propane) • –60F Gas Heat Kit • Electric Heater Accessory Johnson Controls Unitary Products...
- Page 4 S = Hi Static Mtr/Horizontal Economizer (No Baro) Z = Options 3, 4 & 5 Options 1 = Disconnect 2 = Non-Pwr'd Conv. Outlet 3 = Smoke Detector S.A. 4 = Smoke Detector R.A. 5 = Pwr'd Conv. Outlet Johnson Controls Unitary Products...
- Page 5 230v and 415v power supply respectively. Change Figure 1: Unit Shipping Bracket tap on transformer for 208-3-60 or 380-3-50 operation. See unit wiring diagram. Turn each bracket toward the ground and the protective plywood covering will drop to the ground. Johnson Controls Unitary Products...
- Page 6 Slide-out drain pan knockouts with ¾" NPT Compressor access (high- Intelligent control board connection efficiency compressor) for safe and efficient Toolless door operation latch ® Figure 4: Predator Component Location (ZJ037 Shown) Johnson Controls Unitary Products...
- Page 7 Installer must make provisions for adequate LENGTH OF FORKS MUST BE A MINIMUM OF 60 INCHES. combustion and ventilation air in accordance with section 5.3 of Air for Combustion and Ventilation of the National Fuel Gas Johnson Controls Unitary Products...
- Page 8 Unit Accessory Shipping Operating Economizer Power Exhaust Electric Heat Gas Heat 1. Weight given is for the maximum heater size available (24KW). 2. Weight given is for the maximum number of tube heat exchangers available (8 tube). Johnson Controls Unitary Products...
- Page 9 689665-YIM-D-0614 29.75 15.51 29.52 59.00 Ø 25.31 See detail A for gas inlet 11 3/8 See detail B for drain location LEFT 4 3/16 FRONT 21 3/16 27 5/16 Figure 8: ZJ037 - 049 Physical Dimensions Johnson Controls Unitary Products...
- Page 10 689665-YIM-D-0614 29.69 15.25 15.38 59.00 15.38 2X Ø 24.38 SEE DETAIL A FOR GAS INLET 11.38 SEE DETAIL B 59.00 4.19 FOR DRAIN LOCATION LEFT 27.31 21.19 89.00 FRONT Figure 9: ZJ061 Physical Dimensions Johnson Controls Unitary Products...
- Page 11 1. Units must be installed outdoors. Over hanging structure or shrubs should not obscure condenser air discharge outlet. 2. Units may be installed on combustable floors made from wood or class A, B or C roof covering materials. Johnson Controls Unitary Products...
- Page 12 Bottom condensate drain 14 1/2 25 9/16 Bottom gas supply entry 16 3/8 18 1/16 FRONT TOP VIEW Bottom power, control and convenience outlet wiring entry 3X Ø 0.875 Ø 2.469 Figure 10: ZJ037-061 Unit Bottom Duct Openings Johnson Controls Unitary Products...
- Page 13 Figure 12: ZJ037-061 Unit Side Duct Openings Table 6: Side Duct Dimensions Dimension (in.) Unit Model Number ZJ037 27 3/4 12 1/16 27 1/2 ZJ049 27 3/4 12 1/16 27 1/2 ZJ061 27 3/4 12 1/16 27 1/2 Johnson Controls Unitary Products...
- Page 14 689665-YIM-D-0614 30-3/8 4-5/16 Figure 13: ZJ037-061 Unit Left Duct Opening RIGHT 80-5/8 INSULATED DECK UNDER CONDENSER SECTION SUPPLY RETURN 2 TYP. 50-1/2 INSULATED DECK UNDER COMPRESSOR SECTION FRONT 8 or 14 Figure 14: ZJ037-061 Roof Curb Johnson Controls Unitary Products...
- Page 15 Figure 16: Side Panels With Hole Plugs the supply panel is installed with the painted surface UP, facing the heat exchanger, while the return panel is installed with the NOTE: Orientation. Panel is “insulation” side up. Johnson Controls Unitary Products...
- Page 16 Units are shipped with compressor mountings which are factory-adjusted and ready for operation. 3" Minimum Do not loosen compressor mounting bolts. Figure 19: Condensate Drain Johnson Controls Unitary Products...
- Page 17 Change tap on transformer for 208- water or moisture cannot be drawn into the unit during 3-60 or 380-3-50 operation. See unit wiring diagram. normal operation. The above water-proofing conditions will also apply when installing a field supplied disconnect switch. Johnson Controls Unitary Products...
- Page 18 Refer to Electrical Data Table 8 to size power or the basepan inside the curb. wiring, fuses, and disconnect switch. TERMINAL BLOCK TB1 FACTORY OR FIELD GROUND SUPPLIED DISCONNECT THREE PHASE POWER SUPPLY Figure 20: Field Wiring Disconnect Johnson Controls Unitary Products...
- Page 19 REMOVE JUMPER J2 FROM TERMINALS 4 AND 9 ON JUMPER PLUG CONNECTOR P6 ON UNITS WITH ECONOMIZER. TERMINALS A1 AND A2 PROVIDE A RELAY OUT-PUT TO CLOSE THE OUTDOOR ECONOMIZER DAMPERS WHEN THE THERMOSTAT SWITCHES TO THE SET-BACK POSITION. Figure 21: Typical Control Wiring Johnson Controls Unitary Products...
- Page 20 18.0 26.3 29.1 24.1 33.8 36.6 28.9 39.8 42.6 None 11.8 13.8 16.1 14.4 23.3 19.2 27.1 29.3 23.1 31.9 34.1 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 21 29.6 24.1 34.3 37.1 28.9 40.3 43.1 None 10.3 12.1 14.2 16.5 14.4 21.4 23.7 19.2 27.4 29.7 23.1 32.2 34.5 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 22 18.0 32.6 35.3 24.1 40.1 42.8 28.9 46.1 48.8 None 15.8 18.8 21.1 14.4 28.3 19.2 32.1 34.3 23.1 36.9 39.1 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 23 35.8 24.1 40.6 43.3 28.9 46.6 49.3 None 14.3 16.1 19.2 21.5 14.4 26.4 28.7 19.2 32.4 34.7 23.1 37.2 39.5 1. Minimum Circuit Ampacity. 2. Dual Element, Time Delay Type. 3. HACR type per NEC. Johnson Controls Unitary Products...
- Page 24 Fins per inch Tube diameter (in./MM) .71/18 .71/18 .71/18 Circuitry Type 2-pass Microchannel 2-pass Microchannel 2-pass Microchannel EVAPORATOR COIL DATA Face area (Sq. Ft.) 10.5 10.5 Rows Fins per inch Tube diameter 0.375 0.375 0.375 Refrigerant control Johnson Controls Unitary Products...
- Page 25 4 - (24 x 16 x 4) 4 - (24 x 16 x 4) 1. 2 In. Throwaway, Standard, MERV (Minimum Efficiency Reporting Value) 3. 2. 2 In. Pleated, Optional, MERV 7. 3. 4 In. Pleated, Optional, MERV 13. Johnson Controls Unitary Products...
- Page 26 Fins per inch Tube diameter (in./MM) .71/18 .71/18 .71/18 Circuitry Type 2-pass Microchannel 2-pass Microchannel 2-pass Microchannel EVAPORATOR COIL DATA Face area (Sq. Ft.) 10.5 10.5 Rows Fins per inch Tube diameter 0.375 0.375 0.375 Refrigerant control Johnson Controls Unitary Products...
- Page 27 208/230-3-60 1020 1000 460-3-60 600-3-60 208/230-3-60 1280 1420 1400 1400 460-3-60 1400 1400 1400 1400 600-3-60 1400 1400 1400 208/230-3-60 1600 1600 1600 1600 1600 460-3-60 1600 1600 1600 1600 1600 600-3-60 1600 1600 1600 1600 Johnson Controls Unitary Products...
- Page 28 NOTE: There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a 3/4 inch pipe connection at the entrance fitting. Line should not be sized smaller than the entrance fitting size. Johnson Controls Unitary Products...
- Page 29 Check all joints for leaks with soap solution or other material suitable for the purpose. NEVER USE A FLAME. All LP gas equipment must conform to the safety standards of the National Fire Protection Association. Johnson Controls Unitary Products...
- Page 30 For specific troubleshooting and maintenance procedures, please refer to the smoke detector's installation Electric Heat instructions which accompanies the unit. Electric heaters are available as factory-installed options or field-installed accessories. Refer to electric heat instructions for Johnson Controls Unitary Products...
- Page 31 RAM. • CHANGE STORED displays. • Press the button (MenuUp/Exit) to return to the previous menu. 1. When values are displayed, pressing and holding the and button causes the display to automatically increment. Johnson Controls Unitary Products...
- Page 32 Fig. 25 shows the new single enthalpy To use enthalpy the W7220 must have a C7400S Sylkbus boundaries in the W7220. There are 5 boundaries (setpoints sensor for OA. The W7220 calculates the enthalpy and dew Johnson Controls Unitary Products...
- Page 33 Table 14: Supply Air Limitations enabled through Y1 Out or Y2 Out. Unit Size (Ton) Minimum Maximum 037 (3.0) 1500 049 (4.0) 1200 2000 061 (5.0) 1500 2500 Johnson Controls Unitary Products...
- Page 34 0.743 0.715 0.688 0.982 0.947 0.913 0.880 0.848 0.817 0.787 0.758 0.730 0.702 0.676 0.964 0.929 0.897 0.864 0.833 0.802 0.772 0.744 0.716 0.689 0.663 0.946 0.912 0.880 0.848 0.817 0.787 0.758 0.730 0.703 0.676 0.651 Johnson Controls Unitary Products...
- Page 35 This value must be corrected for elevation. Example 2: A system, located at 5,000 feet of elevation, is to deliver 6,000 CFM at a static pressure of 1.5". Use the unit BHP at 5,000 ft. = 3.2 x .832 = 2.66 Johnson Controls Unitary Products...
- Page 36 5 Turns 4 Turns 3 Turns 2 Turns 1 Turn Fully Model (Tons) Sheave Sheave Open Open Open Open Open Open Closed 1.73 1VL40 AK61 1029 1089 2.30 1VP56 AK74 1035 1084 1134 1183 1232 1281 Johnson Controls Unitary Products...
- Page 37 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. 4. Field Supplied Drive. Johnson Controls Unitary Products...
- Page 38 1. Blower performance includes gas heat exchangers and 2” filters. See STATIC RESISTANCE table for additional applications. 2. See RPM SELECTION table to determine desired motor sheave setting and to determine the maximum continuous BHP. 3. kW = BHP x 0.932. Johnson Controls Unitary Products...
- Page 39 Tighten blower pulley and motor sheave set screws after Remove the dot plugs from the duct panel (for location of any adjustments. Re-check set screws after 10-12 hrs. run the dot plugs see Figures 12 and 13). time is recommended. Johnson Controls Unitary Products...
- Page 40 Determine the number of turns the variable motor sheave is open. 0.45 ZJ049 ZJ061 0.35 0.25 ZJ037 0.15 0.05 1000 1500 2000 2500 3000 3500 Airflow (CFM) Figure 28: Dry Coil Delta P Johnson Controls Unitary Products...
- Page 41 CFM. Adjustments of the blower speed and belt tension are REQUIRED. Verify proper sheave alignment; tighten blower pulley and motor sheave set screws after these adjustments. Re-checking set screws after 10-12 hrs. run time is recommended. Johnson Controls Unitary Products...
- Page 42 3. The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation. Johnson Controls Unitary Products...
- Page 43 To be available, a compressor must not be locked-out due to a intended parameters. Errors are handled as described below. All high or low-pressure switch or freezestat trip and the anti-short system errors override minimum run times for compressors. cycle delay (ASCD) must have elapsed. Johnson Controls Unitary Products...
- Page 44 To determine when to operate in low ambient mode, the UCB The ASCD is initiated on unit start-up and on any compressor has a pair of terminals connected to a temperature-activated reset or lock-out. switch set at 45ºF. When the low ambient switch is closed and Johnson Controls Unitary Products...
- Page 45 If the temperature limit opens three times within one hour, it will lock-on the indoor blower motor and a flash code is initiated ZJ049 (4) (See Table 28). ZJ061 (5) ZJ037 (3) ZJ049 (4) ZJ061 (5) Johnson Controls Unitary Products...
- Page 46 GV to close and the retry operation to lock-on the indoor blower motor and flash code is initiated (See begin. After the flame stabilization period, a loss of flame for 3/4 Table 28). Johnson Controls Unitary Products...
- Page 47 GV for a continuous five-minute period the UCB will initiate a The draft motor is energized until the pressure switch closes or flash code (Table 28). The indoor blower motor will not be “W1” is lost. locked-on while there is no GV voltage. Johnson Controls Unitary Products...
- Page 48 • If blower rotation is in the wrong direction. Refer to ignite for the second stage heat. Phasing Section in general information section. Check blower drive belt tension. Johnson Controls Unitary Products...
- Page 49 Steps 1-6. furnace. The intended input for each furnace is shown in Table 27. The table applies to units operating on 60 Hz power only. Johnson Controls Unitary Products...
- Page 50 The second stage (100% input) adjustment screw is adjacent to the “HI” marking on the valve and the first stage (60% input) adjustment screw is located adjacent to the “LO” marking on the valve (See Figure 30). Johnson Controls Unitary Products...
- Page 51 Figure 31: Typical Single Stage Gas Valve Charging The Unit HEAT EXCHANGER TUBE All ZJ units use Thermal Expansion Devices. Charge the unit to 10° subcooling. SUPPLY PIPE BURNER BURNER FLAME (BLUE ONLY) BURNER BRACKET IGNITOR Figure 29: Typical Flame Johnson Controls Unitary Products...
- Page 52 “FAN”. If 24 volts is present at the FAN, check for loose b. Proper wiring between the room thermostat and the wiring between the UCB and M3. UCB, i.e. Y1 to Y1, Y2 to Y2 c. Loose wiring from the room thermostat to the UCB. Johnson Controls Unitary Products...
- Page 53 Caution should be used at even though the economizer is not providing free cooling. all times as the supply air blower may energize To test, disconnect the Mate-N-Locks and jumper between regardless of the room thermostat fan switch position. Johnson Controls Unitary Products...
- Page 54 On calls for heating, the supply air blower operates but the draft alignment. The removal procedure is described in motor does not (the room thermostat fan switch is in the “BURNER/ORIFICE INSPECTION/SERVICING”. Clean or “AUTO” position). replace burner orifices and burners as needed. Johnson Controls Unitary Products...
- Page 55 1, which is the factory default. Current alarms or active restrictions are flashed on the ICB LED. No history is stored on the ICB. Figure 32: Unit Control Board Johnson Controls Unitary Products...
- Page 56 Gas Valve Off No Power or Control Failure Gas Flow 1. These flash codes do not represent alarms. Gas Pressure Ignition Lockout Gas Valve Flame Sensor No Power Or Control Steady Off 24VAC or Control Failure Johnson Controls Unitary Products...
- Page 57 Technical Services Department available. Therefore, some variation in the startup procedure will 5005 York Drive exist depending upon the products capacity, control system, Norman, OK 73069 options and accessories installed. Johnson Controls Unitary Products...
- Page 58 Return Static Pressure: _____________________________________________________________________________________ Design Building Static Pressure: _____________________________________________________________________________ ________________ Outside Air Dilution: Economizer Position Percentage: ____________________________________ _ CFM: Supply Gas Pressure After Regulator W/o Heat Active _____________________________________ Inches_________________ ADDITIONAL APPLICATION NOTES FROM SPECIFYING ENGINEER: Unitary Products Group Johnson Controls Unitary Products...
- Page 59 See Notes sensor installed Check economizer setting A Prove economizer open/close through PC or Control Module Reheat Mode Normal or Alternate Not Applicable Humidistat Location _____________________________________________ Note: BAS System Control Reheat through Intellicomfort/VAV Board Unitary Products Group Johnson Controls Unitary Products...
- Page 60 1. VAV units with heat section - simulate heat call to drive VAV boxes and VFD/IGV to maximum design airflow position. 2. VAV units without heat section - VAV boxes must be set to maximum design airflow position. Unitary Products Group Johnson Controls Unitary Products...
- Page 61 Manifold Pressure Stage 2 (If Equipped) Stage 3 (If Equipped) Supply gas pressure at full fire Check temperature rise measured at full fire °F 1. Input X Eff. (BTU output) 1.08 X Temp. Rise Unitary Products Group Johnson Controls Unitary Products...
- Page 62 OPERATIONAL MEASUREMENTS - STAGING CONTROLS Verify Proper Operation of Heating/Cooling Staging Controls Create a cooling demand at the Thermostat, BAS System or Simplicity PC Verify that cooling/economizer stages are energized. Create a heating demand at the Thermostat, BAS System or Simplicity PC Verify that heating stages are energized.
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