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Armstrong Air G2D93CT, Installation Instructions Manual

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Armstrong Air G2D93CT Installation Instructions Manual Download Page 36

# 47904K005

Page 36

Figure 44

G2D93CT Connection Diagram

P/N 45604-005

5 AMP

Y

C

G

R

W1W2

LINE

EA

C

XFMR

CIRC

HUM

HUM

XFMR

LINE

P

ARK 1

COOL

EA

C

HI HEA

T

LO HEA

T

NEUTRAL

HOT

IGNITION CONTROL

TRANSFORMER

INDUCED

DRAFT

BLOWER

INTERLOCK

SWITCH

1

2
2 1

C HI

GAS VALVE

M

PRESSURE

SWITCH

(LOW)

ROLLOUT

SWITCH

(IF USED)

MAIN
LIMIT

PRESSURE

SWITCH

(DRAIN)

(IF USED)

12 9 6 3

11 8 5 2

10 7 4 1

3
3

120V

24V

HOT
NEUTRAL
GROUND

120/1/60

SEE

NOTE 3

1

2

3
4

5

BLK

RED

WHT

WHT

RED

BLK

5-PIN

CONNECTOR

W2

G

R

Y

W1

THERMOSTAT CONDENSER

WHT

YEL
YEL

WHT

BLU

ORN

RED/BLK

RED

WHT

YEL

VL

T

BRN

GR

Y

BLK

BLK/WHT

WHT

RED/BLK

YEL

YEL

BLK

WHT

ORN

BLU

GRY

GRN

WHT/BLK

RED

BRN

BLK

2

2

1
1

2-PIN

CONNECTOR

CIRCULATION

BLOWER

FLAME

SENSOR

HOT SURFACE
IGNITER

WHT (NEUT)

RED (LO)

BLU (MED)

ORN (MED/LO)

YEL MED/HI

BLK (HIGH)

SEE BLOWER SPEED CHART

S1
P1

ROLLOUT

SWITCH

AUX LIMIT

SWITCH

(IF USED)

AUX LIMIT

SWITCH

VLT

VL

T

PRESSURE

SWITCH

(HIGH)

RED

VLT

VLT

VLT

BRN

BRN

WHT

CONT

P

ARK 2

TWIN

NONE

5

10

P5

180

120

90

60

P4

LOW VOLTAGE -  FIELD

LOW VOLTAGE -  FACTORY

LINE VOLTAGE - FIELD

LINE VOLTAGE - FACTORY

SW1

FAULT CODE

HISTORY

BUTTON

(SEE NOTE 1)

AUTOMATIC

HEAT STAGING

JUMPER

BLOWER OFF

DELAY TIMING

180

120

90

60

C

NOTES:

3. PROPER POLARITY MUST BE OBSERVED FOR FIELD LINE

VOLTAGE SUPPLY; IGNITION CONTROL WILL LOCK OUT IF

POLARITY IS REVERSED.

1. PRESS AND RELEASE FAULT CODE HISTORY BUTTON TO

DISPLAY FAULT CODES. TO ERASE CODES, PRESS AND HOLD
BUTTON IN FOR MORE THAN 5 SECONDS.

2. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE

FURNACE MUST BE REPLACED, IT MUST BE REPLACED WITH

WIRING MATERIAL HAVING A TEMP. RATING OF AT LEAST 90°C.

WHT/BLK

* 5 SPEED MOTOR USED ON THESE MODELS

BLOWER SPEED CHARTS

1ST STAGE

HEAT

MODEL

COOLING

2ND STAGE

HEAT

BLU
BLU
YEL
BLU
BLU
YEL

BLK
BLK
BLK
BLK
BLK
BLK

50D12
75D14

100D14

100D20 *
125D20 *
150D20 *

RED
RED
RED
ORN
ORN
ORN

1ST STAGE

HEAT

MODEL

COOLING

2ND STAGE

HEAT

BLU
BLU
ORN
ORN
BLU
YEL

BLK
BLK
BLK
BLK
BLK
BLK

40D12
60D12

80D16 *
80D20 *

100D20 *
125D20 *

RED
RED
RED
RED
ORN
BLU

80% AFUE

93% AFUE

4. DO NOT CONNECT C (COMMON) CONNECTION BETWEEN

INDOOR UNIT AND THERMOSTAT EXCEPT WHEN REQUIRED
BY THE INDOOR THERMOSTAT. REFER TO THE THERMOSTAT
INSTALLATION INSTRUCTIONS.

5. CHECK CODES FOR PROPER WIRING AND CIRCUIT

PROTECTION BEFORE INSTALLATION.

Summary of Contents for G2D93CT

Page 1: ...vice or maintenance can cause injury or property damage Refer to this manual For assistance or additional information consult a qualified installer service agency or the gas supplier WARNING The insta...

Page 2: ...pply and Piping beginning on page 20 of these instructions 7 Always install furnace to operate within the furnace s intended temperature rise range with a duct system which has an external static pres...

Page 3: ...tmosphere in which the furnace operates must be free of contaminants such as chlorides and sulfates The furnace must be installed so that electrical compo nents are protected from water Unit must be l...

Page 4: ...ted space it must be kept free and clear of insulating materials To avoid property damage caused by condensate drain blockage install a field fabricated auxiliary drain pan with a separate drain line...

Page 5: ...to the PVC pipe Use high temperature RTV sealant to attach elbow to PVC pipe Confined Space A confined space is defined as a space whose volume is less than 50 cubic feet per 1000 BTU per hour of the...

Page 6: ...must be supported with mounting straps to prevent any weight load from being applied to the vent blower Horizontal vent pipe must be supported every 5 and vertical pipe should be supported every 10 t...

Page 7: ...e is 27 use the diameter values for the 30 row in the tables For direct vent installations if the vent and air intake pipe are not equal in length and number of elbows then determine the minimum pipe...

Page 8: ...e shall not terminate over public walkways or near soffit vents or crawl space vents or other areas where condensate or vapor could create a nuisance or hazard or cause property damage or where conden...

Page 9: ...r a e l C D e h t e v o b a d e t a c o l t i f f o s d e t a l i t n e v o t e c n a r a e l c l a c i t r e V e h t m o r f m c 1 6 t e e f 2 f o e c n a t s i d l a t n o z i r o h a n i h t i w l...

Page 10: ...C D e h t e v o b a d e t a c o l t i f f o s d e t a l i t n e v o t e c n a r a e l c l a c i t r e V e h t m o r f m c 1 6 t e e f 2 f o e c n a t s i d l a t n o z i r o h a n i h t i w l a n i m...

Page 11: ...wall and terminate as shown in Figure 7 The vent pipe on horizontal runs must slope upward away from the furnace at a minimum pitch of 1 4 per foot of run to prevent accumulation of condensate Do not...

Page 12: ...air restrictor plate see Figure 2 on page 6 is supplied with this furnace and can be found in the plastic bag containing these Installation Instructions and the User s Information Manual This restrict...

Page 13: ...temperature RTV silicone sealant so intake pipe can be removed if service is required In horizontal venting applications the vent and air intake pipe must be installed on the same side of the house w...

Page 14: ...ation of the flue pipe and is designed to keep objects out of the flue pipe For horizontal venting refer to Figure 13 For vertical venting refer to Figure 14 The vent pipe on horizontal runs must slop...

Page 15: ...1 Seal any unused openings in the common venting system 2 Visually inspect the venting system for proper size and horizontal pitch as required in the National Fuel Gas Code ANSI Z223 1 NFPA 54 latest...

Page 16: ...the draining will occur Install the plastic pipe plug opposite of the drain Using 3 4 PVC pipe make a connection from the adapter just installed to extend just outside the unit Install a 3 4 PVC tee...

Page 17: ...g installed on flue pan to one side of the internal trap assembly as shown in Figure 23 2 Connect the 1 2 NPT plug supplied to the opposite side of the internal trap assembly from the plug installed i...

Page 18: ...hoses must be able to reach the barbed fittings on the trap assembly NOTE Vent tee to avoid vapor lock If connecting to waste drain pipe a second trap must be installed downstream Horizontal Installat...

Page 19: ...or ducts sealed to the furnace casing and terminated outside the space containing the furnace A return air duct system is recommended If the unit is installed in a confined space or closet a return co...

Page 20: ...as a guide mark and cut a full size opening in the side panel s 2 Using the filter rack as a template mark and drill four 7 64 diameter screw holes in the side panel s Table 3 Minimum Filter Requireme...

Page 21: ...gas leaks Use a leak detecting solution or other preferred means Some soaps used for leak detection are corrosive to certain metals Carefully rinse piping thoroughly after leak detection has been com...

Page 22: ...lows a single stage thermostat to be used with a two stage G2D93CT U or G2D95CT U furnace To activate this option move the jumper pin see Figure 33 to desired setting 5 minutes or 10 minutes The furna...

Page 23: ...r Operation G2D95CT U Models The comfort level of the living space can be enhanced when using this feature by allowing continuous circulation of air between calls for cooling or heating The circulatio...

Page 24: ...high humidity In this setup the variable speed motor will operate Figure 35 Wiring Connections for Twinning Two G2D93CT U Furnaces Two Stage Heating Single Stage Cooling at a 18 reduction in the norma...

Page 25: ...6 1 V 0 8 0 U T C 5 9 D 2 G 4 3 M R O N A 0 0 5 1 0 5 9 0 0 6 1 0 0 4 1 0 0 2 1 0 0 0 1 0 2 V 0 8 0 U T C 5 9 D 2 G 1 M R O N D C 0 0 5 1 0 5 9 0 0 0 2 0 0 8 1 0 0 6 1 0 0 4 1 0 2 V 0 0 1 U T C 5 9 D...

Page 26: ...urnace Lighting Instructions For Your Safety Read Before Operating Be sure the manual gas control has been in the OFF position for at least 5 minutes before starting the unit Do not attempt to manuall...

Page 27: ...at 1st stage heat for the duration of the selected time before automati cally switching to 2nd stage heat OPERATION Sequence of Operation G2D93CT U Models Heating When the control is in standby mode...

Page 28: ...on control shuts off the gas valve and runs the combustion blower for an additional 15 seconds The circulating air blower continues to run for 2 minutes at 82 of the selected heating speed low fire or...

Page 29: ...re 41 A call for 1st stage cooling from the thermostat closes the R to Y circuit on the control board The control waits for a 1 second delay before energizing the circulating blower The blower motor r...

Page 30: ...er Wire 1 4 quick connect termi nals on both ends to jumper the HEAT and COOL speed on the integrated ignition blower control board 4 The remaining speed taps must be connected to dummy terminals mark...

Page 31: ...2 0 9 4 0 0 0 1 9 9 4 9 0 0 0 0 4 1 8 8 0 7 1 0 5 3 6 1 1 2 0 9 4 0 0 0 1 2 3 3 9 0 0 0 5 4 5 6 8 0 7 1 0 5 3 7 7 0 2 0 9 4 0 0 0 1 9 4 2 9 0 0 0 0 5 9 4 8 1 6 1 9 2 3 9 3 0 2 1 6 4 1 4 9 0 0 9 8 0 0...

Page 32: ...the unit is operating at the desired speed and within the rise range as shown on the unit rating plate The correct replacement motor must be installed as soon as possible to ensure continued satisfac...

Page 33: ...line becomes blocked or plugged the furnace will not operate properly MAINTENANCE Burners Light the burners and allow to operate for a few minutes to establish normal burning conditions Observe the b...

Page 34: ...LED is provided on the control board to indicate high heat state see Table 6 CFM LED G2D95CT U Models Only On G2D95CT U models an amber LED is provided on the control board to display CFM To determine...

Page 35: ...oor interlock switch Combustion blower assembly Flame rollout protector switch Hot surface igniter Input choke Heat Exchanger Group Heat exchanger primary Heat exchanger secondary Condensate drain pan...

Page 36: ...LINE VOLTAGE FIELD LINE VOLTAGE FACTORY SW1 FAULT CODE HISTORY BUTTON SEE NOTE 1 AUTOMATIC HEAT STAGING JUMPER BLOWER OFF DELAY TIMING 180 120 90 60 C NOTES 3 PROPER POLARITY MUST BE OBSERVED FOR FIE...

Page 37: ...47904K005 Page 37 Figure 45 G2D93CT Wiring Schematic P N 45604 005...

Page 38: ...FIELD PRESSURE SWITCH LOW PRESSURE SWITCH DRAIN IF USED ROLLOUT SWITCH IF USED ROLLOUT SWITCH NONE 10 5 P5 AUX LIMIT SWITCH IF USED WHT BLK SW1 GREEN LED RED LED AMBER LED FAULT CODE HISTORY BUTTON S...

Page 39: ...47904K005 Page 39 Figure 47 G2D95CT Wiring Schematic P N 46131 004...

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