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9

Temperature Control

The unit can be controlled with either a Carrier approved space

temperature sensor, a Carrier accessory Thermidistat

device, or a

Carrier approved accessory thermostat. Install the temperature

control device according to the installation instructions included
with the accessory. Locate the device on a solid interior wall in the

conditioned space to sense average temperature. Carrier space

temperature sensor wiring connections are shown in Fig. 10.
General thermostat field control wiring connections are shown in

Fig. 9. Carrier Thermidistat device wiring connections are shown
in Fig. 11. Configuration of the unit control is required to specify

the control input type before unit operation.
Route thermostat or space temperature sensor cable or equivalent
single leads of colored wire from subbase terminals through

conduit into unit to low--voltage connections as shown on unit
label wiring diagram and in Fig. 9--11.

NOTE

: For wire runs up to 50 ft, use no. 18 AWG (American

Wire Gauge) insulated wire (35

_

C minimum). For 50 to 75 ft, use

no. 16 AWG insulated wire (35

_

C minimum). For over 75 ft, use

no. 14 AWG insulated wire (35

_

C Minimum). All wire larger than

no. 18 AWG cannot be directly connected at the thermostat and
will require a junction box and splice at the thermostat.
Set heat anticipator settings as follows:

VOLTAGE

STAGE 1

(W1) ON

STAGE 1 AND 2

(W1 AND W2) ON

All

0.2

0.4

Settings may be changed slightly to provide a greater degree of

comfort for a particular installation.

Humidity Control

Unit can be controlled with either a Carrier accessory Thermidistat

device or a Carrier--approved accessory humidistat (switch output).
The input for an accessory humidity sensor with 4 to 20 mA output

is another option available when an economizer board is installed.
Install the humidity control device according to the installation

instructions included with the accessory. Locate the device on a
solid interior wall in the conditioned space to sense average

humidity. Carrier Thermidistat device wiring connections are

shown in Fig. 11. General humidistat wiring connections are
shown in Fig. 12. Configuration of the unit control is required to

specify the control input type before unit operation. Refer to the

Controls, Start--up, Operation and Troubleshooting manual for
configuration.
Units with the Humidi--MiZer option receive a discrete input from
a field--installed device (such as from the Carrier humidistat or

Thermidistat device). The discrete input is connected to the TB1

terminal strip points labeled Humidistat 1 and 2. As this is a
discrete input, one of the connection points is for power to the

switch and the other is the return path. (See Fig. 12.)
A space relative humidity sensor input (SP.RH) is only available if

an economizer board (ECB) is installed in the unit and then the

sensor can be connected to the OAQ point TB1--4. (See Fig. 12.)
This input is used instead of the discrete humidistat or thermidistat

inputs. The input controls the Humidi--MiZer using the 4 to 2 0mA
as percent humidity. The relative humidity value (measured by the

relative humidity sensor) can be displayed on the Scrolling

Marquee, in the space through a System Pilot

t

device, or can be

read by other CCN devices where it can be used to perform more

advanced functions. The humidity sensor must be configured
correctly. Refer to the Controls, Start--up, Operation, and

Troubleshooting manual for details.
If the customer also wishes to install a smoke detector into a

Humidi--MiZer equipped 50PG unit, the fire shutdown connection

points are on Plug PL--19, located in the economizer section. See
the unit wiring schematic for wiring. For third--party smoke

detector, see Fig. 13.
Point 19--3 is the 24 vac power source for the detector and point

19--5 is the 24 vac signal input for fire shutdown.
More information is available in the third party control section of
the Controls, Start--up, Operation, and Troubleshooting manual.

OC

R

Y1

Y2

W1

W2

G

C

DEHUM

5

R

Y1

Y2

W1

W2

G

C

1

2

HUMIDISTAT

ROOFTOP UNIT

TB1

THERMIDISTAT

C07055

Fig. 11 -- Field Control Thermidistat Wiring

C07045

Fig. 12 -- Humidi--MiZer Low--Voltage Terminal Strip -- Humidity Sensor/Humidity Wiring

50PG08

--

14

Summary of Contents for 50PG08 14 Series

Page 1: ...AUTION These words are used with the safety alert symbol DANGER identifies the most serious hazards which will result in severe personal injury or death WARNING signifies a hazard which could result in personal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result...

Page 2: ...2 C06252 Fig 1 Roof Curb Dimensions 50PG08 14 ...

Page 3: ...3 C06313 Fig 2 Base Unit Dimensions 50PG08 14 ...

Page 4: ...After unit is in position remove top crating and polyethylene sheet Roof Mount Check building codes for weight distribution requirements Unit operating weight is shown in Table 1 Installation Onto Curb The 50PG units are designed to fit on the accessory full perimeter curb In either case correct placement of the unit onto the curb is critical to operating performance To aid in correct positioning ...

Page 5: ...y Fins Face Split Rows Fins in 3 15 3 15 4 15 4 15 Face Area sq ft 14 9 14 9 14 9 14 9 EVAPORATOR FAN Centrifugal Type Belt Drive Quantity Size in Low 1 15 x 15 1 15 x 15 1 15 x 15 1 15 x 15 High 1 15 x 15 1 15 x 15 1 15 x 15 1 15 x 15 Type Drive Low Belt Belt Belt Belt High Belt Belt Belt Belt Nominal Cfm 3000 3400 4000 5000 Maximum Continuous Bhp Low 2 40 2 40 3 10 3 70 High 3 10 3 70 3 70 5 25 ...

Page 6: ...uctwork to unit do not drill in area below bead or above top edge of duct opening Step 5 Install External Trap for Condensate Drain The unit s 3 4 in condensate drain connections are located on the bottom and side of the unit If the down drain is used drill a minimum of a 5 8 in diameter hole but not larger than a 3 4 in diameter hole through the drain pan A dimple of 2 mm in diameter and 1 5 mm d...

Page 7: ...on and moving to the 200 v 1 4 in male terminal on the primary side of the transformer Refer to unit label diagram for additional information Leads are provided for field wire connections Use UL Underwriters Laboratories approved copper aluminum connector When installing units provide safety disconnect per NEC National Electrical Code Article 440 or local codes For non fused disconnects size the d...

Page 8: ... a Carrier approved accessory thermostat or a Carrier approved space temperature sensor Install thermostat according to the installation instructions included with accessory Locate thermostat assembly or space temperature sensor on a solid interior wall in the conditioned space to sense average temperature Route thermostat or space temperature sensor cable or equivalent single leads of colored wir...

Page 9: ...ge humidity Carrier Thermidistat device wiring connections are shown in Fig 11 General humidistat wiring connections are shown in Fig 12 Configuration of the unit control is required to specify the control input type before unit operation Refer to the Controls Start up Operation and Troubleshooting manual for configuration Units with the Humidi MiZer option receive a discrete input from a field in...

Page 10: ...10 C07191 Fig 13 Third Party Smoke Detector on Humidi MiZert 50PG08 14 ...

Page 11: ... 70 57 110 1 2 Low 2 6 19 8 20 21 100 11 5 10 0 19 8 20 21 100 17 3 15 0 26 4 30 24 100 28 9 25 0 40 9 45 38 100 40 4 35 0 55 3 60 51 100 46 2 40 0 62 5 70 58 100 High 3 4 20 6 25 22 113 11 5 10 0 20 6 25 22 113 17 3 15 0 27 4 30 25 113 28 9 25 0 41 9 45 39 113 40 4 35 0 56 3 60 52 113 46 2 40 0 63 5 70 58 113 LEGEND FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration IFM Indoor Eva...

Page 12: ... 2 50 50 50 50 222 222 30 0 34 6 11 3 15 0 47 8 53 5 50 60 50 50 222 222 50 0 57 7 18 8 25 0 72 8 82 4 80 90 67 76 222 222 70 0 80 8 26 3 35 0 97 8 111 3 100 125 90 102 222 222 80 0 92 4 30 0 40 0 110 3 125 8 125 150 101 116 222 222 High 10 2 52 2 52 2 60 60 55 55 265 265 20 0 23 1 7 5 10 0 52 2 52 2 60 60 55 55 265 265 30 0 34 6 11 3 15 0 54 0 59 8 60 60 55 55 265 265 50 0 57 7 18 8 25 0 79 0 88 ...

Page 13: ...5 11 5 10 0 23 9 25 25 135 17 3 15 0 27 4 30 25 135 28 9 25 0 41 9 45 39 135 40 4 35 0 56 3 60 52 135 46 2 40 0 63 5 70 58 135 57 7 50 0 63 5 70 72 135 High 4 8 25 3 30 27 144 11 5 10 0 25 3 30 27 144 17 3 15 0 29 1 30 27 144 28 9 25 0 43 6 45 40 144 40 4 35 0 58 0 60 53 144 46 2 40 0 65 3 70 60 144 57 7 50 0 65 2 70 73 144 575 3 60 518 633 6 1 40 2 0 8 Low 2 8 18 1 20 19 106 13 9 15 0 20 9 25 19 ...

Page 14: ...8 6 45 1 60 0 166 6 155 1 175 175 153 175 383 383 High 15 0 72 2 72 2 80 80 77 77 392 392 20 0 23 1 7 5 10 0 72 2 72 2 80 80 77 77 392 392 30 0 34 6 11 3 15 0 72 2 72 2 80 80 77 77 392 392 50 0 57 7 18 8 25 0 85 0 94 6 90 100 78 87 392 392 70 0 80 8 26 3 35 0 110 0 123 5 125 125 101 114 392 392 100 1 115 5 37 6 50 0 147 6 138 0 150 150 136 154 392 392 120 1 138 6 45 1 60 0 172 6 161 1 175 175 159 ...

Page 15: ... 8 70 60 112 1 2 Low 2 6 22 0 25 23 102 11 5 10 0 22 0 25 23 102 17 3 15 0 29 1 30 27 102 28 9 25 0 43 6 45 40 102 40 4 35 0 58 0 60 53 102 46 2 40 0 65 3 70 60 102 High 3 4 22 8 25 24 115 11 5 10 0 22 9 25 24 115 17 3 15 0 30 1 35 28 115 28 9 25 0 44 6 45 41 115 40 4 35 0 59 0 60 54 115 46 2 40 0 66 3 70 61 115 LEGEND FLA Full Load Amps HACR Heating Air Conditioning and Refrigeration IFM Indoor E...

Page 16: ...2 0 60 60 55 55 227 227 30 0 34 6 11 3 15 0 53 8 59 5 60 60 55 55 227 227 50 0 57 7 18 8 25 0 78 8 88 4 80 90 72 81 227 227 70 0 80 8 26 3 35 0 103 8 117 3 110 125 95 108 227 227 80 0 92 4 30 0 40 0 116 3 131 8 125 150 107 121 227 227 High 10 2 57 0 57 0 60 60 61 61 270 270 20 0 23 1 7 5 10 0 57 0 57 0 60 60 61 61 270 270 30 0 34 6 11 3 15 0 60 0 65 8 70 70 61 61 270 270 50 0 57 7 18 8 25 0 85 0 9...

Page 17: ...37 11 5 10 0 26 1 30 28 137 17 3 15 0 30 1 35 28 137 28 9 25 0 44 6 45 41 137 40 4 35 0 59 0 60 54 137 46 2 40 0 66 3 70 61 137 57 7 50 0 66 2 70 74 137 High 4 8 27 5 30 29 146 11 5 10 0 27 5 30 29 146 17 3 15 0 31 9 35 29 146 28 9 25 0 46 4 50 43 146 40 4 35 0 60 8 70 56 146 46 2 40 0 68 0 70 63 146 57 7 50 0 68 0 70 76 146 575 3 60 518 633 6 1 40 2 0 8 Low 2 8 19 8 20 21 108 13 9 15 0 23 0 25 21...

Page 18: ... 120 1 138 6 45 1 60 0 172 6 161 1 175 175 159 180 388 388 High 15 0 77 0 77 0 80 80 82 82 397 397 20 0 23 1 7 5 10 0 77 0 77 0 80 80 82 82 397 397 30 0 34 6 11 3 15 0 77 0 77 0 80 80 82 82 397 397 50 0 57 7 18 8 25 0 91 0 100 6 100 110 84 93 397 397 70 0 80 8 26 3 35 0 116 0 129 5 125 150 107 119 397 397 100 1 115 5 37 6 50 0 153 6 144 0 175 150 141 159 397 397 120 1 138 6 45 1 60 0 178 6 167 1 2...

Page 19: ... HOOD ECONOMIZER PANEL POWER EXHAUST C06260 Fig 15 Hood Installation 4 Hang the barometric relief power exhaust hood on the mounting flange on the economizer panel Secure hood to panel with screws saved from Step 2 See Fig 15 and 16 5 Align hole in flange of economizer panel with left edge of hood Hang economizer hood on the top flange of the economizer panel by rotating hood until top flange of t...

Page 20: ... Morris St S Indianapolis IN 46231 Printed in U S A Edition Date 03 10 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No 50PG 41SI Replaces 50PG 37SI 50PG08 14 ...

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