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4

Fig. 1 — 48TC**17-30 Model Number Nomenclature

Model Series - WeatherMaker

 

®

TC - Standard Efficiency

Unit Heat Type

48 - Gas Heat Packaged Rooftop

Cooling Tons

17  =  15 tons  

28  =  25 tons

20  =  17.5 tons 

30  =  27.5 tons

24 = 20 tons

Heat Options

D  =  Low Gas Heat
E  =  Medium Gas Heat
F  =  High Gas Heat
S  =  Low Heat w/ Stainless Steel Exchanger
R  =  Medium Heat w/ Stainless Steel Exchanger
T  =  High Heat w/ Stainless Steel Exchanger     

Sensor Options

A =  None
B =  RA Smoke Detector
C =  SA Smoke Detector
D =  RA + SA Smoke Detector
E =  CO

2

F  =  RA Smoke Detector and CO

2

G =  SA Smoke Detector and CO

2

H =  RA + SA Smoke Detector and CO

2

J  =  Condensate Overflow Switch
    (electromechanical controls only)
K =  Condensate Overflow Switch and RA Smoke Detectors
L  =  Condensate Overflow Switch and RA + SA
   Smoke 

Detectors

Indoor Fan Options & Air Flow Configuration

1  =  Standard Static/Vertical Supply, Return Air Flow
2  =  Medium Static/Vertical Supply, Return Air Flow
3  =  High Static/Vertical Supply, Return Air Flow
B =  Med Static High Efficiency Motor/Vertical Supply, Return Air Flow
C =  High Static High Efficiency Motor/Vertical Supply, Return Air Flow

Refrig. Systems Options

D =  Two stage cooling model with RTPF coils
E =  Two stage cooling models with Humidi-MiZer

®

    (17-28 models with RTPF coils only)

Coil Options – RTPF (Outdoor – Indoor – Hail Guard)

A =  Al/Cu – Al/Cu
B =  Precoat Al/Cu – Al/Cu
C =  E-coat Al/Cu – Al/Cu
D =  E-coat Al/Cu – E-coat Al/Cu
E =  Cu/Cu – Al/Cu
F  =  Cu/Cu – Cu/Cu
M =  Al/Cu – Al/Cu – Louvered Hail Guard
N =  Precoat Al/Cu – Al/Cu – Louvered Hail Guard
P =  E-coat Al/Cu – Al/Cu – Louvered Hail Guard
Q =  E-coat Al/Cu – E-coat Al/Cu – Louvered Hail Guard
R =  Cu/Cu – Al/Cu – Louvered Hail Guard
S =  Cu/Cu – Cu/Cu – Louvered Hail Guard

Coil Options – Novation (Outdoor – Indoor – Hail Guard)

G =  Al/Al – Al/Cu
H =  Al/Al – Cu/Cu
J  =  Al/Al – E-coat Al/Cu
K =  E-coat Al/Al – Al/Cu
L  =  E-coat Al/Al – E-coat Al/Cu
T  =  Al/Al – Al/Cu – Louvered Hail Guard
U =  Al/Al – Cu/Cu – Louvered Hail Guard
V =  Al/Al – E-coat Al/Cu – Louvered Hail Guard
W =  E-coat Al/Al – Al/Cu – Louvered Hail Guard
X =  E-coat Al/Al – E-coat Al/Cu – Louvered Hail Guard

Voltage

1 = 575/3/60
5 = 208-230/3/60
6 = 460/3/60

Design Revision

-  =  Factory Design Revision 

Base Unit Controls

0  =  Base Electro-mechanical Controls (can be used
    with W7212 EconoMi$er IV)
1 = PremierLink

 Controller (for 1-speed motors only)

2  =  RTU Open Multi-Protocol Controller
6  =  Electro-mechanical w/ 2-Speed Fan 
    and W7220 Economizer Controller (can be used
    with W7220 EconoMi$er X)

Intake / Exhaust Options

A =  None
B =  Temperature Economizer w/ Barometric Relief
F  =  Enthalpy Economizer w/ Barometric Relief
K =  2-Position Damper
U =  Temp Ultra Low Leak Economizer w/ Baro Relief
V =  Temp Ultra Low Leak Economizer w/ PE (cert) - 
    Vertical Air Only
W =  Enthalpy Ultra Low Leak Economizer w/ Baro Relief
X =  Enthalpy Ultra Low Leak Economizer PE (cert) - 
    Vertical Air Only

Service Options

0 = None
1  =  Unpowered Convenience Outlet
2  =  Powered Convenience Outlet
3 = Hinged Panels
4  =  Hinged Panels and
    Unpowered Convenience Outlet
5  =  Hinged Panels and
    Powered Convenience Outlet 

Packaging

0 = Standard

Electrical Options 

A =  Non USA models - No (SAV) included
C =  Non-Fused Disconnect
G =  Standard USA models - (SAV) included
J  =  2 Speed Fan Controller (VFD) &
  Non-Fused 

Disconnect

Example:

Position:

4

8

T

C

D

D

2

4

A

1

A

5

-

0

A

3

B

0

1

2

3

4

5

6

7

8

9

10 11 12 13 14 15 16 17 18

Summary of Contents for 48TC D/E17 Series

Page 1: ...SCREENSAVER ENTHALPY SETTINGS TWO SPEED FAN OPERATION CHECKOUT TROUBLESHOOTING PremierLink Control 46 RTU Open Control System 46 Wiring Diagrams 46 Smoke Detectors 59 RETURN AIR SENSOR TUBE INSTALLAT...

Page 2: ...age and amperage listed on the unit rating plate Unit may have more than one power switch WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and...

Page 3: ...NOXYDE DE CARBONE Si ces directives ne sont pas suivies cela peut entra ner des blessures graves ou une intoxication au monoxyde de carbone pouvant causer la mort si des produits de combustion s infil...

Page 4: ...Hail Guard Q E coat Al Cu E coat Al Cu Louvered Hail Guard R Cu Cu Al Cu Louvered Hail Guard S Cu Cu Cu Cu Louvered Hail Guard Coil Options Novation Outdoor Indoor Hail Guard G Al Al Al Cu H Al Al Cu...

Page 5: ...5 Fig 2 48TC 17 20 Vertical Airflow...

Page 6: ...6 Fig 3 48TC 17 20 Back View and Condensate Drain Location...

Page 7: ...7 Fig 4 48TC 17 20 Corner Weights and Clearances...

Page 8: ...8 Fig 5 48TC 17 20 Bottom View...

Page 9: ...9 Fig 6 48TC 24 28 Vertical Airflow...

Page 10: ...10 Fig 7 48TC 24 28 Back View and Condensate Drain Location...

Page 11: ...11 Fig 8 48TC 24 28 Corner Weights and Clearances...

Page 12: ...12 Fig 9 48TC 24 28 Bottom View...

Page 13: ...13 Fig 10 48TC 30 Vertical Airflow...

Page 14: ...14 Fig 11 48TC 30 Back View and Condensate Drain Location...

Page 15: ...15 Fig 12 48TC 30 Corner Weights and Clearances...

Page 16: ...16 Fig 13 48TC 30 Bottom View...

Page 17: ...aced on the curb Review the following for rec ommended sequences for installation steps CURB MOUNTED INSTALLATION 1 Install curb 2 Install field fabricated ductwork inside curb 3 Install accessory thr...

Page 18: ...openings Fig 14 Unit Leveling Tolerances Fig 15 Typical Access Panel and Compressor Locations Table 2 Operating Weights A B 0 25 6 B C 0 5 12 A C 0 5 12 MAXIMUM ALLOWABLE DIFFERENCE IN MM A B C CONTR...

Page 19: ...19 Fig 16 Roof Curb Details 17 and 20 Size Units...

Page 20: ...20 Fig 17 Roof Curb Details 24 and 28 Size Units...

Page 21: ...21 Fig 18 Roof Curb Details 30 Size Units...

Page 22: ...on curb after unit is set Doing so will result in damage to the roof curb seal Although unit is weatherproof guard against water from higher level runoff and overhangs Flue vent discharge must have a...

Page 23: ...ms 4 and 5 to upper panel using the screws provided 6 Apply seal strip to mating flange of the hood see Fig 22 7 Secure hood item 3 to upper panel using the screws provided 8 Secure side retainers ite...

Page 24: ...uctions regarding these accessories NOTE Furnace gas input rate on rating plate is for installation up to 2000 ft 610 m above sea level The input rating for altitudes above 2000 ft 610 m must be derat...

Page 25: ...re drop of 0 5 in wg 124 Pa between gas regulator source and unit gas valve connec tion when unit is operating at high fire flow rate The gas supply line can approach the unit in two ways horizontal l...

Page 26: ...m gases as specified by local and or national codes If using PTFE Teflon tape ensure the material is Double Density type and is labeled for use on gas lines Apply tape per manufacturer s instructions...

Page 27: ...connect the source leads to the line side with unit field power leads See Fig 32 Fig 32 Location of TB1 Field power wires are connected to the unit at line side pressure lugs on the terminal block se...

Page 28: ...position 4 Measure the tip of the shaft to the outside surface of the cor ner post to be 0 88 in 5 Tighten the locking screw to secure the shaft to the NFD 6 Turn the handle to OFF position with red...

Page 29: ...37 Remove two slot fillers in the bottom of the cover to per mit service tool cords to exit the cover Check for full closing and latching Fig 37 Weatherproof Cover Installation Non powered type Requir...

Page 30: ...outing and connection information Units Without Thru Base Connections 1 Install liquid tight conduit between disconnect and control box 2 Pull correctly rated high voltage wires through the conduit 3...

Page 31: ...at HL38MG029 1 Route the humidistat 2 conductor cable field supplied through the hole provided in the unit corner post 2 Feed wires through the raceway built into the corner post see Fig 41 to the 24...

Page 32: ...32 Fig 42 Accessory Field Installed Humidistat Fig 43 Edge Pro Thermidistat Fig 44 Typical Humidi MiZer Adaptive Dehumidification System Humidistat Wiring RELATIVE HUMIDITY...

Page 33: ...re of the EconoMi er X system The module is mounted in the unit s control box and includes the user inter face for the system The W7220 economizer module provides the basic inputs and outputs to provi...

Page 34: ...osure to 40 F 40 C Storage Temperature 40 F to 150 F 40 C to 65 C Shipping Temperature 40 F to 150 F 40 C to 65 C Relative Humidity 5 to 95 RH non condensing ECONOMIZER MODULE WIRING DETAILS Use Fig 4...

Page 35: ...ypad on the front of the economizer controller KEYPAD The four navigation buttons see Fig 50 are used to scroll through the menus and menu items select menu items and to change parameter and configura...

Page 36: ...ame ters for the EconoMi er X system The Menus in display order are STATUS SETPOINTS SYSTEM SETUP ADVANCED SETUP CHECKOUT ALARMS NOTE Some parameters in the menus use the letters MA or MAT indicating...

Page 37: ...n Displays when Discharge Air sensor is connected and displays measured discharge temperature Displays _ _ _F if sensor sends invalid value if not connected short or out of range OA TEMP _ _ _ F 40 F...

Page 38: ...Displays 2 to 10 V if 3 sensors RA OA and MA In AUTO mode dampers controlled by CFM 100 to 9990 cfm increment by 10 If OA MA RA and CO2 sensors are connected and DCV CAL ENABLE is set to AUTO mode the...

Page 39: ...factory default values NOTE RECHECK AUX2 IN and FANTYPE for required 2 speed values ADVANCED SETUP MA LO SET 45 F 35 F to 55 F 2 F to 13 F incremented by 10 F SUPPLY AIR TEMPERATURE LOW LIMIT Temperat...

Page 40: ...c out Issues a system alarm CONNECT EXH1 N A N A Closes the power exhaust fan 2 relay EXH1 ALARMS Alarms display only when they are active The menu title ALARMS includes the number of active alarms in...

Page 41: ...dry bulb and enthalpy operation with and without DCV see Tables 14 17 For 2 speed fan dry bulb and enthalpy operation with and without DCV see Tables 18 21 Table 13 Damper Minimum Position Settings a...

Page 42: ...4v On 0v Off MIN POS to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 Set No OFF OFF HIGH 0v...

Page 43: ...ed ON ON HIGH 24v On 24v On VENTMIN to VENTMAX Closed Yes OFF OFF HIGH 0v Off 0v Off VENTMIN to VENTMAX Closed ON OFF HIGH 0v Off 0v Off VENTMIN to Full Open Closed to Full Open ON ON HIGH 24v On 0v O...

Page 44: ...ff 0v Off MIN POS Closed ON OFF LOW 0v Off 0v Off MIN POS to Full Open Closed to Full Open ON ON HIGH 24v On 0v Off MIN POS to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE A...

Page 45: ...lled by the W7220 but it re quires the status to know where to position the OA damper for minimum position for the fan speed The 2 speed fan delay is available when the system is programmed for 2 spee...

Page 46: ...e alarms You can also navigate to the Alarms menu at any time Clearing Alarms Once the alarm has been identified and the cause has been re moved e g replaced faulty sensor the alarm can be cleared fro...

Page 47: ...47 Fig 52 PremierLink Wiring Diagram...

Page 48: ...48 Fig 53 PremierLink Wiring Diagram with Humidi MiZer System...

Page 49: ...49 Fig 54 Typical RTU Open System Control Wiring Diagram...

Page 50: ...50 Fig 55 Typical RTU Open System Control Wiring Diagram with Humidi MiZer System...

Page 51: ...51 Fig 56 48TC 17 30 Control Wiring Diagram...

Page 52: ...52 Fig 57 48TC 17 30 Power Wiring Diagram 208 230 3 60...

Page 53: ...53 Fig 58 48TC 17 30 Power Wiring Diagram 460 3 60...

Page 54: ...54 Fig 59 48TC 17 30 Power Wiring Diagram 575 3 60...

Page 55: ...55 Fig 60 48TC 17 30 Control Wiring Diagram with Humidi MiZer System...

Page 56: ...56 Fig 61 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 208 230 3 60...

Page 57: ...57 Fig 62 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 460 3 60...

Page 58: ...58 Fig 63 48TC 17 30 Power Wiring Diagram with Humidi MiZer System 575 3 60...

Page 59: ...Sensor Location Fig 65 Return Air Sampling Tube Location in Unit without Economizer Fig 66 Return Air Sampling Tube Location in Unit with Economizer To install the return air sensor sampling tube 1 Re...

Page 60: ...Refer to separate installation instructions for information on in stalling these accessories Step 14 Check Belt Tension Measure the belt span length as shown in Fig 68 Calculate the re quired deflect...

Page 61: ...rom HVAC Partners www hvacpartners com Table 1 Table 2 BELT CROSS SECTION SMALLEST SHEAVE DIAMETER BELT DEFLECTION FORCE LBS UNNOTCHED BELTS NOTCHED BELTS USED NEW USED NEW A AX 3 0 3 6 3 7 5 5 4 1 6...

Page 62: ...iscontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53480268 01 Printed in U S A Form 48TC 17 30 V 05SI Pg 62 8 19 Replaces 48TC 1...

Page 63: ...door air filters are clean and in place Y N _____ Verify that unit installation is level Y N _____ Check fan wheels and propeller for location in housing orifice and setscrew tightness Y N _____ Check...

Page 64: ...scharge pressure _______________ PSIG C Entering air temperature _______________ F D Liquid line temperature at outlet or reheat coil _______________ F E Confirm correct rotation for compressor Y N __...

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