Subscribe to Our Youtube Channel
Related Manuals for York YMMRZC090BAAKB-X
Summary of Contents for York YMMRZC090BAAKB-X
- Page 1 Rooftop Unit Installation manual New Released Form: AMMRZCBA-220909 60Hz Cooling Only Rooftop R410A Model No. YMMRZC090BAAKB-X YMMRZC120BAAKB-X YMMRZC150BAAKB-X Issue Date Sep,09, 2022...
-
Page 2: Table Of Contents
Do not use this furnace if any part has been The furnace area must be kept clear and free of under water. A flood-damaged furnace is combustible materials, gasoline, and other extremely dangerous. Attempts to use the flammable vapors and liquids; furnace can result in fire or explosion. - Page 3 T T a a b b l l e e o o f f C C o o n n t t e e n n t t s s Start Up ........21 Troubleshooting.
-
Page 4: General Information
General Information W W A A R R N N I I N N G G It is important that periodic maintenance be performed to help assure trouble free operation. A maintenance F F i i b b e e r r g g l l a a s s s s W W o o o o l l ! ! schedule is provided at the end of this manual. -
Page 5: System Input Devices And Functions
G G e e n n e e r r a a l l I I n n f f o o r r m m a a t t i i o o n n • The unit is set on the roof curb, and temporary heat Evaporator Frost Control is provided in the building. -
Page 6: Dimensional Data
Dimensional Data Below figure illustrates the minimum operating and Providing less than the recommended clearances may service clearances for either a single or multiple unit result in condenser coil starvation, “short-circuiting” of installation. These clearances are the minimum exhaust and economizer airflows, or recirculation of distances necessary to assure adequate serviceability, hot condenser air. -
Page 7: Condensate Drain Connection
D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a Figure 2. Gas/electric units — overview CONDENSATE GAS CONNECTION DRAIN INSIDE CONNECTION Figure 3. - Page 8 D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a Figure 4. Gas/electric units — bottom view (in inches) 88-7/16” 25-5/8”...
- Page 9 D D i i m m e e n n s s i i o o n n a a l l D D a a t t a a Figure 6. Roof curb (in inches) 15 1/2” 3.000 84 13/16” 32 1/4”...
-
Page 10: Weights
Weights Table 1. Maximum unit and corner weights (lb) and center of gravity dimensions (in.) Weights (lb) Corner Weights Center of Gravity (in.) Unit Model Tons Shipping Length Width GCC090A 1087 1012 GCC120A 1133 1058 GCC150A 1235 1172 12.5 Weights are approximate. Horizontal and downflow unit and corner weights may vary slightly. Weights do not include additional factory or field installed options/accessories. - Page 11 W W e e i i g g h h t t s s Figure 9. Rigging and center of gravity data CENTER OF GRAVITY CENTER OF GRAVITY WIDTH LENGTH...
-
Page 12: Installation
Installation Check with a roofing contractor for proper waterproofing procedures. Unit Foundation Use only with type of gas approved for this furnace. Refer to the furnace rating plate. W W A A R R N N I I N N G G Install this furnace only in a location and position as R R i i s s k k o o f f R R o o o o f f C C o o l l l l a a p p s s i i n n g g ! ! specified in page 16、19、22、23 of these... -
Page 13: Requirements
I I n n s s t t a a l l l l a a t t i i o o n n The checklist listed below is a summary of the steps 1. Remove and discard the cover plate located on the required to successfully install a commercial unit. -
Page 14: Filter Installation
I I n n s s t t a a l l l l a a t t i i o o n n Main Unit Power N N o o t t e e : : Use 1-inch PVC pipe to connect to the drain pan outlet provided in the unit. - Page 15 I I n n s s t t a a l l l l a a t t i i o o n n exceed three (3) ohms/conductor for the length of 3. Be sure to check all loads and conductors for the run.
-
Page 16: Gas Heat Data
I I n n s s t t a a l l l l a a t t i i o o n n Gas Heat Data Table 3. Gas heater operating data Heating Input Rate 125,000 180,000 225,000 250,000 —Btu/h Minimum and Maxmum Inlet Supply Gas Pressure Natural/LP 4.5/11.0... -
Page 17: Voltage Imbalance
I I n n s s t t a a l l l l a a t t i i o o n n Figure 13. Typical unit gas train configuration The 2.2 percent imbalance in this example exceeds the maximum allowable imbalance of 2.0 percent. -
Page 18: Checklist
I I n n s s t t a a l l l l a a t t i i o o n n External Unit Power Supply 4. Observe the ABC and CBA phase indicator lights on the face of the sequencer. The ABC indicator light Unit Disconnect Wiring Plan will glow if the phase is ABC. -
Page 19: Through The Base Gas Utility Option
I I n n s s t t a a l l l l a a t t i i o o n n Through the Base Gas Utility W W A A R R N N I I N N G G Option P P r r o o p p e e r r F F i i e e l l d d W W i i r r i i n n g g a a n n d d G G r r o o u u n n d d i i n n g g R R e e q q u u i i r r e e d d ! ! - Page 20 I I n n s s t t a a l l l l a a t t i i o o n n Figure 14. Through the base gas piping installation Flue gas temperature is high，shall avoid high temperature flue gas directly blowing to the gas pipelines when installing gas pipelines.
-
Page 21: Pre Start
Pre Start Electromechanical Controls – Verifying Proper Air Flow (Units with Belt Drive Indoor Fan) Test Procedure F F a a n n T T e e s s t t a a n n d d M M i i n n i i m m u u m m V V e e n n t t i i l l a a t t i i o o n n . . Connect the Much of the systems performance and reliability is closely associated with, and dependent upon having short circuit between R and G. -
Page 22: Start Up
Start Up Electromechanical Controls - terminated, the indoor fan relay (F) coil is de-energized Sequence Of Operation with heater contactors. When the thermostat fan selection switch is set to the These units are offered with electromechanical "On" position, the thermostat keeps the indoor fan controls. -
Page 23: Ignition Module Low, Medium And High Heat
S S t t a a r r t t U U p p setpoint, the thermostat closesW1 contacts the first Table 8. Ignition module diagnostics stage electric heat contactor (AH or AH and CH) is energized. If the first stage of electric heat cannot Slow flash Normal, call for heat. -
Page 24: Low Pressure Cutout
S S t t a a r r t t U U p p cooling demand, the second compressor will be staged b. If the electrical phasing is correct, before back and the supply fan will switch to Low Speed until condemning a compressor, interchange any two the unit stages all cooling off or receives a call for Cool leads (at the compressor Terminal block) to... -
Page 25: Heating Start-Up
S S t t a a r r t t U U p p 2. After the compressor and condenser fan have system and components have been checked, open the started and operated for approximately 30 minutes, main power disconnect switch to reset the unit. observe the operating pressures. -
Page 26: Maintenance
Maintenance W W A A R R N N I I N N G G deflection value determined in Step 3. Set the small O-ring at zero on the force scale of the ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD gauge plunger. Failure to follow safety warnings exactly could 4. -
Page 27: Monthly Maintenance
M M a a i i n n t t e e n n a a n n c c e e Table 11. Belt tension measurement and deflection ranges (in/lb) Deflection Force (lb) Small P.D Range Belts Cross Steel Cable Gripbelts Super Gripbelts (in) Gripnotch (in) (in) -
Page 28: Heating Season
M M a a i i n n t t e e n n a a n n c c e e W W A A R R N N I I N N G G I I m m p p o o r r t t a a n n t t : : Do not release refrigerant to the atmosphere! If adding or removing R R o o t t a a t t i i n n g g C C o o m m p p o o n n e e n n t t s s ! ! refrigerant is required, the service... -
Page 29: Microchannel (Mche) Coils
M M a a i i n n t t e e n n a a n n c c e e Microchannel (MCHE) Coils chemical cleaners are a risk factor to MCHE due to the material of the coil. The manufacturer does not N N O O T T I I C C E E recommend the use of chemical cleaners to clean microchannel coils. - Page 30 M M a a i i n n t t e e n n a a n n c c e e...
-
Page 31: Replacing The Cooling Fan
M M a a i i n n t t e e n n a a n n c c e e Replacing the Cooling Fan When replacing the cooling fan, please use the original fan. To purchase the original fan, please contact the agent where you purchased the product or the sales department of our company. -
Page 32: Standard Troubleshooting
Troubleshooting and verify operation of all outputs, controls, and W W A A R R N N I I N N G G modes. Refer to the sequence of operations for each mode, to assist in verifying proper operation. H H a a z z a a r r d d o o u u s s S S e e r r v v i i c c e e P P r r o o c c e e d d u u r r e e s s ! ! Make the necessary repairs and proceed to Step 6 F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w a a l l l l p p r r e e c c a a u u t t i i o o n n s s i i n n t t h h i i s s m m a a n n u u a a l l a a n n d d and Step 7. - Page 33 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Method 2 To reset the system at the unit, cycle the unit power by turning the disconnect switch “Off”...
- Page 34 T T r r o o u u b b l l e e s s h h o o o o t t i i n n g g Table 15. Troubleshooting chart (continued) Symptom Remedy Possible Cause Increase speed of blower or reduce restriction - replace air Low evaporator airflow filter Low vapor - cool compressor -...
-
Page 35: Wiring Diagrams
Wiring Diagrams N N o o t t e e : : Contact technical support for wiring diagrams. Table 16. Wiring diagrams Type of Airflow Schematic Type Voltage Description Multi-Speed Fans GCC090-150, 60Hz, 2-Stage Gas Heat Power and Control 208–230... - Page 36 orm: AMMRZCBA-220909 Johnson Controls, Inc. Milwaukee, USA www.johnsoncontrols.com Middle East and Africa Customer Care Email : BE-MEA-UPG-Tech-Support@jci.com Johnson Controls reserve the right to change product features without prior notice.
Need help?
Do you have a question about the YMMRZC090BAAKB-X and is the answer not in the manual?
Questions and answers