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AAON RQ SERIES Installation operation & maintenance

Manual is about: Packaged Rooftop Units, Heat Pumps, & Outdoor Air Handling Units

Summary of RQ SERIES

  • Page 1

    Rq series packaged rooftop units, heat pumps, & outdoor air handling units installation, operation, & maintenance o do not store gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance o what to do if you smell gas  do not try to light any appliance.  do not t...

  • Page 3

    3 table of contents aaon® rq series features and options introduction ................................................................. 7 safety .............................................................................................................................................. 8 rq series ...

  • Page 4

    4 startup ........................................................................................................................................... 64 filters ........................................................................................................................................ 64...

  • Page 5

    5 index of tables and figures tables: table 1 - electric and gas heating capacities ............................................................................. 25 table 2 - auxiliary electric heating capacities ........................................................................... 26 table 3 ...

  • Page 6

    6 figures: figure 1 - lockable handle .......................................................................................................... 23 figure 2 - rq series orientation .................................................................................................. 27 figure 3 - rq cab...

  • Page 7

    7 aaon® rq series features and options introduction energy efficiency direct drive backward curved plenum supply fans variable capacity r-410a scroll compressors airside economizers factory installed aaonaire ® energy recovery wheels double wall rigid polyurethane foam panel construction, r-13 insul...

  • Page 8: Safety

    8 safety attention should be paid to the following statements: note - notes are intended to clarify the unit installation, operation and maintenance. Caution - caution statements are given to prevent actions that may result in equipment damage, property damage, or personal injury. Warning - warning ...

  • Page 9: Warning

    9 fire, explosion or carbon monoxide poisoning hazard failure to replace proper controls could result in fire, explosion or carbon monoxide poisoning. Failure to follow safety warnings exactly could result in serious injury, death or property damage. Do not store or use gasoline or other flammable v...

  • Page 10: Warning

    10 unit handling to prevent injury or death lifting equipment capacity shall exceed unit weight by an adequate safety factor. Always test-lift unit not more than 24 inches high to verify proper center of gravity lift point to avoid unit damage, injury or death. Warning failure to properly drain and ...

  • Page 11: Warning

    11 some chemical coil cleaning compounds are caustic or toxic. Use these substances only in accordance with the manufacturer ’s usage instructions. Failure to follow instructions may result in equipment damage, injury or death. Warning door compartments containing hazardous voltage or rotating parts...

  • Page 12

    12 1. Startup and service must be performed by a factory trained service technician. 2. Use only with type of the gas approved for the furnace. Refer to the furnace rating plate. 3. The unit is for outdoor use only. See general information section for more information. 4. Provide adequate combustion...

  • Page 13

    13 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 14

    14 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 15

    15 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 16

    16 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - o d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 17

    17 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 18

    18 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 19

    19 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 20

    20 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 21

    21 rq series feature string nomenclature : v l t c o n f ig a1 a2 a3 a4 b1 b2 b3 1a 1b 1c 1d 2 3 4 5a 5b 5c 6a 6b 6c 7 8 9 10 11 12 13 14a 14b 15 16 17 18 19 20 21 22 23 r q - 0 0 5 - 3 - v - b b 0 1 - 3 3 4 : a 0 0 0 - d 0 b - p j c - 0 b a - 0 d 0 0 0 0 l - 0 0 - 0 0 b 0 0 0 0 0 b model options un...

  • Page 22: General Information

    22 general information rq series packaged rooftop units, heat pumps and outdoor air handling units have been designed for outdoor installation only. Units are assembled, wired, charged and run tested at the factory. Startup and service must be performed by a factory trained service technician. Certi...

  • Page 23: Caution

    23 installation of rq series units must conform to the icc standards of the international mechanical code, the international building code, and local building, plumbing and waste water codes. In the absence of local codes installation must conform to the current (united states) national fuel gas cod...

  • Page 24: Warning

    24 storage if installation will not occur immediately following delivery, store equipment in a dry protected area away from construction traffic and in the proper orientation as marked on the packaging with all internal packaging in place. Secure all loose-shipped items. Packaged direct expansion (d...

  • Page 25

    25 note: low ambient operation air-cooled dx units without a low ambient option, such as condenser fan cycling, ecm driven condenser fans or the 0°f low ambient option, will not operate in the cooling mode of operation properly when the outdoor temperature is below 55°f. Low ambient and/or economize...

  • Page 26: Caution

    26 table 2 - auxiliary electric heating capacities feature 3 kw (208v) kw (230v, 380v 460v, 575v) *k = heat k 7.5 10.0 *l = heat l 15.0 20.0 *m = heat m 22.5 30.0 *n = heat n 30.0 40.0 wiring diagrams unit specific wiring diagrams are laminated and affixed inside the compressor and control compartme...

  • Page 27: Installation

    27 installation aaon equipment has been designed for quick and easy installation. Unit location the curb should be mounted first and must be located so that duct connections will be clear of structural members of the building. Verify rooftop or foundation can support the total unit weight, including...

  • Page 28: Caution

    28 only. Do not make openings larger than necessary. Set the curb to coincide with the openings. Make sure the curb is level. Unit must be level in both horizontal axes to support the unit and reduce noise and vibration. Be careful to install the provided neoprene isolator according to figure 3 prio...

  • Page 29

    29 figure 3 - rq cabinet standard and power exhaust gasket locations.

  • Page 30: Caution

    30 forklifting the unit units can be lifted using a forklift. Forks must be 48” in length. Standard units can be lifted from all sides except the outside air side. Units with energy recovery wheels can only be fork lifted from the left or right side. Forks must be perpendicular to unit. When lifting...

  • Page 31

    31 lifting the unit the rq series units must be lifted using the lifting points in the side base rails. A spreader bar must be used to prevent the lifting straps from damaging the unit. The connection points on the spreader bar must be 48”-60” apart. The minimum cable length used to lift a standard ...

  • Page 32: Caution

    32 vertical duct connection note: if outside air will be in contact with the air tunnel base the unit should include the base insulation option or the base must be field insulated. Figure 8 - vertical duct connection do not drill or punch holes in the base of the unit, from inside the unit or from b...

  • Page 33

    33 seismic curb installation using a standard curb with a seismic unit will void the certification of the unit. All mounting details listed must be followed to achieve seismic certification. The aaon unit must be certified to icc-es ac156 when using a seismic curb for seismic certifications to apply...

  • Page 34

    34 figure 10 - seismic solid bottom curb without filters cross section figure 11 - seismic solid bottom curb without filters detail a figure 12 - seismic solid bottom curb without filters detail b.

  • Page 35

    35 figure 13 - seismic rigid mount curb cross section horizontal duct connection note: if outside air will be in contact with the air tunnel base the unit should include the base insulation option or the base must be field insulated. Remove shipping covers and attach duct to flanges provided on the ...

  • Page 36

    36 figure 15 - rq series unit closed rain hood figure 16 - rq series unit open rain hood metal mesh filters metal mesh outside air filters require installation of the filter rack on the intake of the rain hood. Clips which hold the metal mesh filters in the filter rack should face outward. Figure 17...

  • Page 37: Warning

    37 electrical verify the unit nameplate agrees with power supply. Connect power and control wiring to the unit as shown in figure 12 and in the unit specific wiring diagram, which shows factory and field wiring and is attached to the inside of the door of the control compartment. Route power and con...

  • Page 38: Caution

    38 size supply conductors based on the unit mca rating. Supply conductors must be rated a minimum of 75°c. Protect the branch circuit in accordance with code requirements. The unit must be electrically grounded in accordance with local codes, or in the absence of local codes, the current national el...

  • Page 39: Caution

    39 variable speed compressors variable speed compressors with an inverter drive are available on 2-6 ton units. Variable speed compressors should not be operated outside the factory determined frequency range. The factory determined compressor frequency range is given below in table 4. For more info...

  • Page 40: Warning

    40 gas heating verify the unit nameplate agrees with the proper gas supply type and amount. Gas piping must be installed in accordance with local codes, or in the absence of local codes, installation must conform to the current (united states) national fuel gas code ansi-z223.1/nfpa 54 or the curren...

  • Page 41: Caution

    41 table 8 - propane (kbtu/hr) - specific gravity = 1.52, supply pressure = 11” w.C., pressure drop, 0.5” w.C. Pipe size length of pipe 20 ft 50 ft. 100 ft. 150 ft. 200 ft. 1/2” 189 114 78 63 55 3/4” 393 237 162 132 112 1” 732 448 307 252 213 1-1/4” 1496 913 630 511 440 1-1/2” 2299 1417 976 787 675 ...

  • Page 42

    42 gas pressure regulator & overpressure protection device a gas pressure regulator must be installed if natural gas supply pressure to the unit is greater than 10.5” w.C. And less than 2 psi (55.4” w.C.) and if propane gas supply pressure is greater than 13” w.C. And less than 2 psi (55.4” w.C.). R...

  • Page 43

    43 figure 21 - example 2-6 ton through the base gas piping.

  • Page 44: Danger

    44 leak testing all components of gas supply system, including manual shut off valves and the piping in the interior of the unit, should be leak tested with a soap solution before operating the appliance and at least on an annual basis thereafter. All gas fired heat exchangers are completely tested ...

  • Page 45: Warning

    45 open loop applications this product contains one or more refrigerant-to-water heat exchangers made of copper, which is subject to corrosion and failure when exposed to chlorides. Do not allow water containing any form of chlorides to enter this heat exchanger. Common forms of chlorides include: 1...

  • Page 46: Warning

    46 coverage under aaon warranties and the heat exchanger manufacturer warranties. Unit is capable of operating with entering water temperatures (ewt) as low as 57°f, during the cooling mode, without the need for head pressure control. If the ewt is expected to be lower than 57°f or a more stable ope...

  • Page 47: Caution

    47 condenser water pump must be field sized and installed between the cooling tower/geothermal loop and self-contained unit. System should be sized in accordance with the ashrae handbook. Use engineering guidelines to maintain equal distances for supply and return piping and limit bend radiuses to m...

  • Page 48: Caution

    48 for mixing and temperature stabilization, wells in the water piping should extend at least ½ pipe diameter into the pipe. Piping systems should not exceed 10 ft/sec fluid velocity to ensure tube wall integrity and reduce noise. Condensate drain piping 2-6 ton units are equipped with one condensat...

  • Page 49

    49 figure 22 - post corner hole location figure 23 - post back hole location.

  • Page 50

    50 figure 24 - post corner hole piping figure 25 - post back hole piping.

  • Page 51: Warning

    51 heating coils one or two row hot water and steam heating and preheating coils can be factory installed. All valve controls for heating operation are field supplied and field installed. Hot water and steam coil connections are spun copper tube. Water coils should not be subjected to entering air t...

  • Page 52

    52 electric preheat figure 26 - preheat controller the electric preheat controller is factory installed within the preheat cabinet. The following details are for ehc1 version 1.10 of the preheat controller. Status display screens these screens are access by pressing either the left or right controll...

  • Page 53

    53 6. Lltset - “low limit time” temperature (°f) setpoint. If this temperature is not reached at full output, relay will pull in. 7. Stage - current operating stage 1-6. 8. Stage - current operating stage 1-6. Mod - modulation rate % being applied to stage one heat strip scr. 9. Oat - outside air in...

  • Page 54

    54 2. Belowllt - "below low limit time". Range = 10sec-1800sec, and the default is 10sec. If ‘lltset’ temperature is not reached within ‘belowllt’ after reaching full output, the status relay will operate. 3. Stages - number of stages. Range = 1-6, and the default is 1. The number of stages can be d...

  • Page 55

    55 led flash alarm codes the flashing red led will be to the right of the screen. The number of blinks is described below. The lcd screen will also display the screens. 1 = lata probe open/short 2 = latb probe open/short 3 = oat sensor open/short 4 = leaving air temp over limit 5 = cooling down afte...

  • Page 56: Warning

    56 the modulating electric preheat option is designed to temper the incoming outside air to the unit based on an enable control signal and the outside air conditions. A 24vac enable signal must be provided to the [phe] terminal to enable the operation of the electric preheat. Once the preheat contro...

  • Page 57

    57 proper operation efficiency and building occupant comfort. Normal maintenance requires periodic inspection of filters, the cassette wheel, drive belts, air seals, wheel drive motor, and its electrical connections. Wiring diagrams are provided with each motor. When wired according to wiring diagra...

  • Page 58: Warning

    58 at a time to provide slip fit clearance when the wheel is rotated by hand. Confirm that the wheel rotates freely. Apply power to the unit and confirm rotation. Airflow balancing and checking high performance systems commonly have complex air distribution and fan systems. Unqualified personnel sho...

  • Page 59: Caution

    59 a characteristic of all dry desiccants, such films can close off micron sized pores at the surface of the desiccant material, reducing the efficiency by which the desiccant can adsorb and desorb moisture and also build up so as to reduce airflow. In a reasonably clean indoor environment such as a...

  • Page 60: Caution

    60 installation considerations energy recovery cassettes are incorporated within the design of packaged units, packaged air handlers and energy recovery ventilators. In each case, it is recommended that the following considerations be addressed: accessibility the cassette and all its operative parts...

  • Page 61: Caution

    61 and diameter seals, as shown in hub seal adjustment diagram. 5. Start and stop wheel several times to confirm seal adjustment and to confirm belt is tracking properly on wheel rim (approximately 1/4” from outer edge of rim). Diameter seal adjustment hub seal adjustment service segment installatio...

  • Page 62: Caution

    62 segment installation 3. Holding segment by the two outer corners, press the segment towards the center of the wheel and inwards against the spoke flanges. If hand pressure does not fully seat the segment, insert the flat tip of a screw driver between the wheel rim and outer corners of the segment...

  • Page 63

    63 6. Reinstall the bearing onto the wheel shaft, being careful to engage the two locating pins into the holes in the bearing support beam. Secure the bearing with two self-locking nuts. 7. Install the belts around the wheel and pulley according to the instructions provided with the belt. 8. Reinsta...

  • Page 64: Startup

    64 startup (see back of the manual for startup form.) during startup, it is necessary to perform routine checks on the performance of the unit. This includes checking the air flow, air filters, condenser water flow, dampers, heaters, and refrigerant charge. Filters do not operate the unit without fi...

  • Page 65: Caution

    65 the type of unit and options determine the ranges for liquid sub-cooling and evaporator superheat. Refer to table 13 below when determining the proper sub-cooling. Checking liquid sub-cooling measure the temperature of the liquid line as it leaves the condenser coil. Read the gauge pressure at th...

  • Page 66

    66 the system is undercharged if the superheat is too high and the sub-cooling is too low correct an undercharged system by adding refrigerant to the system to reduce superheat and raise sub-cooling. If the sub-cooling is correct and the superheat is too high, the txv may need adjustment to correct ...

  • Page 67

    67 gas heater instructions figure 27 - gas heater instructions.

  • Page 68

    68 freeze stat startup freeze stat is anadjustable temperature sensor (-10 to 70°f) mounted on the tubing of the first cooling circuit and wired to de-energize all cooling circuits if tubing temperature falls below setpoint. Option is used to prevent freezing of evaporator coil. Recommended setting:...

  • Page 69

    69 speed adjustment is made by varying the dc voltage on pin 8 (+) & 16 (-). If wattmaster or mini controller control systems are installed on the system then they will provide the 0-10vdc signal for speed control. The controller will be wired directly to pin 8 & 16. If a potentiometer is installed ...

  • Page 70

    70 table 18 - ec condenser fan cycling options color terminal customer connection option 1 option 2 option 3 option 4 option 5 black 0.50 bws l1 208-230 vac 208-230 vac 208-230 vac 208-230 vac 208-230 vac brown 0.50 bws l2 208-230 vac 208-230 vac 208-230 vac 208-230 vac 208-230 vac green #10 eyelet ...

  • Page 71

    71 adjustable fan cycling switch procedure to adjust the fan cycle switch you will need a flathead screwdriver. Recommended settings the switch will come factory set to cut-in at 425psi (+/– 5psi) and a differential of 155psi (or open at 270psi (+/– 5psi)). Settings for cut in and differential press...

  • Page 72

    72 to lower the pressure set point for the cut in gauge, turn the adjustable screw clockwise. To raise the pressure set point for the cut in gauge, turn the adjustable screw counter clockwise. To raise the pressure set point for the differential gauge, turn the adjustable screw clockwise. To lower t...

  • Page 73: Operation

    73 operation unit operations should be controlled with thermostat, or unit controller, never at the main power supply, except for servicing, emergency, or complete shutdown of the unit. Thermostat operation heating thermostat system switch - "heat" thermostat fan switch - "auto" or "on" thermostat t...

  • Page 74: Maintenance

    74 electric heating operation when a call for heating (g and w1, w2, etc.) is made the supply blower motors and electric resistance heaters will energize. Heating is accomplished by passing electrical current through a specified amount of resistance heaters which will produce the required heat. On a...

  • Page 75: Warning

    75 proved and goes off 120 seconds after the heating call is removed. Furnace combustion ventilation air and flue openings should be checked annually for debris and obstructions. If vent extensions are used they must meet category iii requirements. This appliance contains a wire screen at the vent o...

  • Page 76: Warning

    76 figure 29 - gas heat exchanger attach the heat exchanger to the bulkhead using the holes around the perimeter. Connect flex gas lines to the piping on the heat exchanger. If flexible gas piping in the unit must be replaced connectors cannot be reused, only new connectors must be used. Connect wir...

  • Page 77: Warning

    77 will also prevent any possible plugging of the drain lines and overflow of the pan itself. Cleaning of the drain pans and inside of the unit should be done only by qualified service technician. Evaporator coil removal evacuate refrigerant from the systems. Remove the txv bulbs from the suction li...

  • Page 78: Caution

    78 use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers and dirt into the coil. This will make cleaning efforts more difficult. Surface loaded fibers must be completely removed prior to using low velocity clean water rinse. A monthly clean water rinse is ...

  • Page 79: Warning

    79 surface preparation, the best work yields the best results. Apply chlor*rid dts - apply directly onto the substrate. Sufficient product must be applied uniformly across the substrate to thoroughly wet out surface, with no areas missed. This may be accomplished by use of a pump-up sprayer or conve...

  • Page 80: Caution

    80 2. With a pump sprayer filled with a mix of 4 parts water to one part simple green spray the air inlet face of the coil. Be sure to cover all areas of the face of the coil. 3. Allow the coil to soak for 10-15 minutes. 4. Rinse the coil with water as in step one. 5. Repeat as necessary. #2 water f...

  • Page 81: Warning

    81 supply fan factory lubrication note: bearing lubrication only applies to belt driven fan motors such as the energy recovery wheel power exhaust fan motor. All original fan motors and bearings are furnished with factory lubrication. Some applications will require that bearings be re- lubricated pe...

  • Page 82

    82 sheet-metal slide) out of unit through blower access opening (see figure 34). Figure 34 - rq supply fan removal slide phase and brownout protection module the dpm is a digital phase monitor that monitors line voltages from 200vac to 240vac 1 ɸ and 200vac to 600vac 3ɸ. The dpm is 50/60 hz self-sen...

  • Page 83

    83 screens manufacturer’s screen r-k electronics dpm v0.0.00 average voltage screen vavg imb hz 460 0 60 off default – the default screen shows the real time voltage detected in each of the 3 phases: a-b b-c c-a 460 459 461 on voltage selection screen (vertical format) default = 460v, 3Ø 200, 1Ø; 20...

  • Page 84: Warning

    84 variable capacity compressor controller units with variable capacity scroll compressors may include the following compressor controller. The following is an explanation of the terminals and troubleshooting alert flash codes of the controller. For more information on the compressor controller, see...

  • Page 85: Warning

    85 figure 36 - compressor controller flash code details filter replacement monthly air filter inspection is required to maintain optimum unit efficiency. It is strongly recommended that filter media be replaced monthly. Filters are located upstream of the evaporator coil in the filter and economizer...

  • Page 86

    86 table 21 - rq series 2-6 ton unit filters feature 6b quantity / size type 0 2 / 20” x 20” x 2” pleated, 30% eff, merv 8 b 2 / 20” x 20” x 4” pleated, 30% eff, merv 8 c 2 / 20” x 20” x 2” permanent filter frame - replaceable media f 2 / 20” x 20” x 4” pleated, 65% eff, merv 11 g pleated, 85% eff, ...

  • Page 87

    87 appendix a - heat exchanger corrosion resistance the resistance guide provides the corrosion resistance of stainless steel type aisi 316 and pure copper (99.9%) in water, to a number of important chemical factors. The actual corrosion is a very complex process influenced by many different factors...

  • Page 88

    88 water containing concentration (mg/l or ppm) time limits - analyze before aisi 316 smo 254 copper alloy nickel alloy total hardness (°dh) 4.0-8.5 no limit + + + + nitrate (no 3 ) no limit + + + + > 100 + + 0 + iron (fe) no limit + + + + > 0.2 + + 0 + aluminum (al) no limit + + + + > 0.2 + + 0 + m...

  • Page 89

    89 appendix b - thermistor temperature vs. Resistance values deg c deg f resistance (kohms) -40 -40 2889.6 -35 -31 2087.22 -30 -22 1522.20 -25 -13 1121.44 -20 -4 834.72 -15 5 627.28 -10 14 475.74 -5 23 363.99 0 32 280.82 5 41 218.41 10 50 171.17 15 59 135.14 20 68 107.44 25 77 86.00 30 86 69.28 35 9...

  • Page 90: Rq Series Startup Form

    90 rq series startup form job name:_______________________________________________ date:______________ address:______________________________________________________________________ ______________________________________________________________________________ model number:__________________________...

  • Page 91

    91 supply fan assembly alignment check rotation nameplate amps________ number hp l1 l2 l3 1 band size_____________________ vav controls_________________ vfd frequency________________ energy recovery wheel assembly wheel spins freely check rotation fla ________ number hp l1 l2 l3 1 power exhaust fan ...

  • Page 92

    92 compressors/dx cooling check rotation number l1 l2 l3 head pressure psig suction pressure psig 1 - full capacity 1 - reduced capacity refrigeration system 1 full capacity - cooling mode pressure saturated temperature line temperature sub-cooling superheat discharge n/a n/a suction n/a liquid n/a ...

  • Page 93

    93 water/glycol system 1. Has the entire system been flushed and pressure checked? Yes no 2. Has the entire system been filled with fluid? Yes no 3. Has air been bled from the heat exchangers and piping? Yes no 4. Is the glycol the proper type and concentration (n/a if water)? Yes no 5. Is there a m...

  • Page 94

    94 maintenance log this log must be kept with the unit. It is the responsibility of the owner and/or maintenance/service contractor to document any service, repair or adjustments. Aaon service and warranty departments are available to advise and provide phone help for proper operation and replacemen...

  • Page 95: Literature Change History

    95 literature change history february 2011 added information regarding the charging of a heat pump and added additional information regarding freezing water in the heat exchanger. June 2011 updated filter information. April 2012 added chilled water, hot water, and steam coil connection sizes. August...

  • Page 96

    96 january 2016 updated phase and brownout protection module section and added freeze stat startup section. April 2016 added adjustable fan cycling switch procedure section. May 2016 added aaon touchscreen controller. July 2016 updated neoprene statements and e-coated cleaning section. January 2017 ...

  • Page 100

    Copyright © aaon, all rights reserved throughout the world. Aaon ® and aaonaire ® are registered trademarks of aaon, inc., tulsa, ok. Aaon 2425 south yukon ave. Tulsa, ok 74107-2728 www.Aaon.Com rq series installation, operation & maintenance r94490 · rev. F · 170925 factory technical support: (918)...