Bard T**H, W**H*D, S**H*D, T**H*D, S**H, W**H User Manual

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INSTALLATION INSTRUCTIONS

SINGLE STAGE HEAT PUMPS

LOW VOLTAGE

CONTROL CIRCUIT WIRING

MODELS

W**H W**H*D

S**H S**H*D

T**H T**H*D

Bard Manufacturing Company, Inc.

Manual :

2100-516H

Bryan, Ohio 43506

Supersedes:

2100-516G

Since 1914...Moving ahead just as planned.

File:

Volume III Tab 16

Date:

03-28-14

 

 

Manual

2100-516H

 

 

Page

1 of 19

Contents

Installation Instructions

 

Wiring – Low Voltage Wiring......................................

3

Operating Voltage Range..........................................

3

Low Voltage Connection............................................

3

Figures

 

 

 

Figure 1

Basic HP w/Opt. Elec. Heat......................

5

Figure 2

HP w/Opt. MFAD, CRV & ERV Vent. Pkg. .

 

w/Programmable T-Stat............................

6

Figure 3

HP w/Opt. MFAD, CRV & ERV Vent. Pkg. .

 

w/Non-Programmable T-Stat....................

7

Figure 4

HP w/Opt. MFAD, CRV & ERV Vent. Pkg. .

 

w/Non-Programmable Thermostat with

 

 

CO2 Controller.........................................

8

Figure 5

Heat Pump w/Opt. Economizer

 

 

"E" Vent Option.........................................

9

Figure 6

HP w/Dehumidification Sequence & No

 

 

Vent Pkg. Using T-Stat Comb.................

10

Figure 7

HP w/Dehumidification Sequence w/

 

 

Non-Programmable T-Stat..........................

11

Figure 8

HP w/Dehumidification Sequence & Opt.

 

MFAD, CRV, & ERV Vent Pkg.

 

 

Using Elec. T-Stat with Combination

 

 

Temp. & Humidity Control.......................

12

Figure 9

HP w/Dehumidification Sequence & Opt.

 

MFAD, CRV & ERV Vent. Pkg.

 

 

Using Non-Prog. T-Stat.

 

 

(No Occupied Signal)..............................

13

Figure 10

HP w/Dehumidification Sequence & Opt.

 

MFAD, CRV & ERV Vent. Pkg.

 

 

Using Non-Prog. T-Stat. with

 

 

CO2 Controller.........................................

14

Figure 11

Heat Pump w/CS2000A*........................

15

Figure 12

W**H1 Dehum. with Economizer and

 

 

#8403-060 Thermostat (EIFM)

 

 

"E" Vent Option.......................................

16

Figure 13

1-Stage HP w/Opt. Elec. Heat with or w/o .

 

Dehum.

. with ECONWM* Style Economizer

 

"W" or "T" Vent Option............................

17

Figure 14

HP w/Opt. CRVMP Vent Pkg. with

 

 

Programmable T-Stat..............................

18

Figure 15

HP w/Opt. MFAD, CRV & ERV Vent Pkg. .

 

with Non-Programmable T-Stat.............

19

Wiring Diagram

 

Figure 11 Heat Pump w/CS2000A*........................

15

Tables

 

 

Table 1 Diagram to Use w/Unit & Vents................

3

Table 2 Operating Voltage Range.........................

3

Table 3

Wall Thermostat........................................

3

Table 4

Humidity Controls.....................................

4

Table 5

CO2 Controller...........................................

4

Table 6 Thermostat Wire Size...............................

4

Manual

2100-516H

Page

2 of 19

TABLE 1

DIAGRAM TO USE WITH UNIT AND VENTS

 

Vent

 

None

CRV, ERV, MFAD

CRVMWH-3

 

EIFM

ECONWM*

 

 

 

CHCRV-5

Economizer

CS2000A*

 

 

 

 

 

 

 

 

 

System

Vent Code

 

X

R, M, V, P

 

C

 

E

T, W, S

 

 

Thermostat

Programmable

Programmable

Programmable

Programmable

Programmable

All

 

Model Series

No

 

Yes

No

Yes

No

 

Yes

No

 

Yes

No

Yes

 

 

S**H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Pump

T**H

1

 

1

3 & 4

2

15

 

14

N/A

 

5

N/A

13

11

 

W**H

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heat Pump with

S**H*D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T**H*D

7

 

6

9 & 10

8

N/A

 

14

N/A

 

12

N/A

13

N/A

Dehumidification

 

 

 

W**H*D

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

WIRING – LOW VOLTAGE WIRING

230/208V, 1 phase and 3 phase equipment dual primary voltage transformers. All equipment leaves the factory wired on 240V tap. For 208V operation, reconnect from 240V to 208V tap. The acceptable operating voltage range for the 240V and 208V taps are:

TABLE 2

OPERATING VOLTAGE RANGE

TAP

RANGE

240V

253 – 216

208V

220 – 187

NOTE: The voltage should be measured at the field power connection point in the unit and while the unit

is operating at full load (maximum amperage operating condition).

An 18 gauge copper, color-coded thermostat cable is recommended. The connection points are shown in this Manual. See Table above.

Low Voltage Connection

These units use a grounded 24-volt AC low voltage circuit.

The “R” terminal is the hot terminal and the “C” terminal is grounded.

G” terminal is the fan input.

Y” terminal is the compressor input.

B” terminal is the reversing valve input. The reversing valve must be energized for heating mode.

R” terminal is the 24 VAC hot.

C” terminal is the 24 VAC grounded.

L” terminal is compressor lockout output. This terminal is activated on a high or low pressure trip by the electronic heat pump control. This is a 24 VAC output.

W2” terminal is second stage heat (if equipped).

O1” terminal is the ventilation input. This terminal energizes any factory installed ventilation option.

E” terminal is the emergency heat input. This terminal energizes the emergency heat relay.

W3” terminal is the dehumidification input. This terminal energizes compressor, blower and three-way valve.

LOW VOLTAGE CONNECTIONS

FOR DDC CONTROL

Fan Only

 

Energize G

Cooling Mode

Energize Y, G

Heat Pump Heating

Energize Y, G, B

2nd Stage Heating

Energize G, W2, Y, B

w/Heat Pump (if employed)

Ventilation

 

Energize G, O1

Emergency Heat

Energize B, W2, E, G

Dehumidification

Energize W3

 

 

 

 

 

TABLE 3

 

 

WALL THERMOSTAT

 

 

 

 

Part Number

 

 

Predominate Features

 

 

2 stage Cool, 2 stage Heat - Conventional

8403-058

 

1 stage Cool, 2 stage Heat - Heat Pump

(TH5220D1151)

Electronic Non-Programmable

 

 

Auto or Manual changeover

 

 

3 stage Cool; 3 stage Heat

8403-060

 

Programmable/Non-Programmable Electronic

 

HP or Conventional

(1120-445)

 

 

Auto or Manual changeover

 

 

Dehumidification Output

Manual

2100-516H

 

Page

3 of 19

TABLE 4

HUMIDITY CONTROLS

Part Number

Predominate Features

8403-038

SPDT switching, pilot duty 50VA @ 24V

(H600A1014)

Humidity range 20-80% RH

8403-047

Electronic dehumidistat SPST closes-on-rise

(H200-10-21-10)

Humidity range 10-90% with adjustable stops

 

TABLE 5

 

CO2 CONTROLLER

 

 

Part Number

Predominate Features

 

Normally Open SPST relay closes-on-rise

 

24V dual wave length sensor. Default setting

8403-067

950ppm, adjustable to 0-2000ppm

 

Default off setting 1000ppm, adjustable to

 

0-200 ppm can be calibrated

TABLE 6

THERMOSTAT WIRE SIZE

Transformer

 

Wire

Maximum

FLA

Distance

VA

Gauge

 

In Feet

 

 

 

 

 

20 gauge

45

 

 

18 gauge

60

55

2.3

16 gauge

100

 

 

14 gauge

160

 

 

12 gauge

250

Manual

2100-516H

Page

4 of 19

FIGURE 1

BASIC HEAT PUMP WITH OPTIONAL ELECTRIC HEAT

NO ECONOMIZER or VENTILATION PACKAGES

 

 

 

 

Low Voltage Wiring Diagram

 

 

Thermostat

C

G

R

Rc

Y

O/B

Aux

L

E

1

Stage Cool

#TH5220D1151

Bard part #8403-058

 

 

 

 

 

 

 

 

 

2

Stage Heat

 

 

 

 

1

 

 

 

 

 

"L" is constant 24V output when

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

thermostat is in Em Heat mode

Thermostat

C

G

R

Y1

O/B

W2

Y O/D W1/E

L

Y2

A

Electronic

Bard part #8403-060

Programmable

 

 

 

 

 

 

 

 

 

 

24V Low Voltage

C

G

R

Y1

Y

B

W1

W2

W3

E

L

DH

O1

Terminal Block

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

MIS-2645 C

 

 

 

 

 

 

 

 

 

 

 

 

 

Unit

1 Factory Jumper Installed

Manual

2100-516H

 

Page

5 of 19

FIGURE 2

HEAT PUMP WITH OPTIONAL MFAD, CRV & ERV

VENTILATION PACKAGING WITH PROGRAMMABLE THERMOSTAT (RECOMMENDED)

Low Voltage Wiring Diagram

4

Thermostat

C

G

R

Y1

Y2

W1/E

W2

O/B

Y O/D

L

A

Electronic

Bard part #8403-060

Programmable

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

5

6

Optional CO2 Controller Bard part #8403-067

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

24V Low Voltage

C

G

R

Y

Y1

E

W2

B

W1

W3

DH

L

O1

Unit

Terminal Block

 

 

 

 

 

Red

 

1

 

 

 

 

 

 

 

3

 

 

Orange

 

 

 

 

 

 

 

 

 

 

 

 

CRV

 

 

 

Brown/White

 

 

 

 

 

Black

 

 

 

ERV

 

 

 

 

 

 

 

 

 

 

 

Ventilation Packages

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Black

 

 

 

MFAD

 

 

 

 

Red

 

 

 

1 Factory Jumper Installed

MIS-2633 C

 

 

 

2Do not connect "A" from tstat #8403-060 if optional CO2 controller is used.

3Connect orange wire to "G" only if optional CO2 controller is used.

Must be configured to programmable and fan

4 set to programmed for the "A" output to function during scheduled occupied periods

Manual

2100-516H

Page

6 of 19

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