Daikin altherma ERHQ014BAV3 Installation Manual Download

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Installation manual

ERHQ011~W1 + ERLQ011~W1

Outdoor unit for air to water heat pump

4PW57794-1 – 08.2010

ONTENTS

Page

Definitions.................................................................................. 1

1.1.

Meaning of warnings and symbols................................................. 1

1.2.

Meaning of used terms .................................................................. 2

Safety considerations ................................................................ 2

Warning.......................................................................................... 3
Caution........................................................................................... 3

Before installation ...................................................................... 4

3.1.

Scope of the manual ...................................................................... 4

3.2.

Precautions for R410A ................................................................... 4

3.3.

Installation ...................................................................................... 4

3.4.

Model identification ........................................................................ 4

3.5.

Accessories.................................................................................... 4

3.6.

Handling ......................................................................................... 5

Overview of unit ......................................................................... 5

4.1.

Opening the unit............................................................................. 5

4.2.

Main components........................................................................... 6

4.3.

Functional diagram W1 ............................................... 7

4.4.

Functional diagram W1 ................................................ 8

Selecting installation site ........................................................... 9

5.1.

General .......................................................................................... 9

5.2.

Selecting a location in cold climates ............................................ 10

Precautions on installation....................................................... 11

6.1.

foundation work............................................................................ 11

6.2.

Drain work (only for ERHQ) ......................................................... 11

6.3.

Installation method for prevention of falling over .......................... 12

Installation servicing space ..................................................... 12

Refrigerant pipe size and allowable pipe length ...................... 13

8.1.

Selection of piping material.......................................................... 13

8.2.

Refrigerant pipe size .................................................................... 13

8.3.

Allowable pipe length and height difference................................. 13

Precautions on refrigerant piping............................................. 14

9.1.

Flaring guidelines......................................................................... 14

9.2.

Brazing guidelines........................................................................ 14

9.3.

Stop valve operation .................................................................... 15
Cautions on handling the stop valve ............................................ 15
Opening/closing the stop valve .................................................... 15
Cautions on handling the stem cap.............................................. 15
Cautions on handling the service port ......................................... 15

9.4.

Tightening torques ....................................................................... 15

10. Refrigerant piping .................................................................... 15

10.1. Preventing foreign objects from entering...................................... 16
10.2. Precautions when connecting field piping and

regarding insulation...................................................................... 16

10.3. Cautions for necessity of a trap.................................................... 16

11. Leak test and vacuum drying................................................... 17

11.1. General guidelines ....................................................................... 17
11.2. Setup............................................................................................ 17
11.3. Leak test ...................................................................................... 17
11.4. Vacuum drying ............................................................................. 17

12. Charging refrigerant................................................................. 17

12.1. Important information regarding the refrigerant used................... 17
12.2. Precautions and general guidelines ............................................. 18
12.3. Calculating the additional refrigerant charge for ERHQ models .. 18
12.4. Calculating the additional refrigerant charge for ERLQ models ... 18
12.5. Complete recharging.................................................................... 19

For ERHQ only............................................................................. 19
For ERLQ only ............................................................................. 19

13. Pump down operation.............................................................. 19

14. Electrical wiring work ............................................................... 19

14.1. Precautions on electrical wiring work........................................... 19
14.2. Connecting power supply and interunit wiring ............................. 20
14.3. Precautions on wiring of power supply and inter-unit wiring ........ 20
14.4. Electrical characteristics .............................................................. 21

ERHQ models .............................................................................. 21
ERLQ models............................................................................... 21

15. Test operation .......................................................................... 21

15.1. Pre-run checks ............................................................................. 21
15.2. Test run ........................................................................................ 21
15.3. Failure diagnosis at the moment of first installation ..................... 22

16. Maintenance and servicing ...................................................... 22

16.1. Service precautions ..................................................................... 22
16.2. Service mode operation ............................................................... 22

17. Disposal requirements ............................................................. 22

18. Unit specifications .................................................................... 23

18.1. Technical specifications ............................................................... 23
18.2. Electrical specifications................................................................ 23

19. Wiring diagram......................................................................... 24

Thank you for purchasing this product.

The original instructions are written in English. All other languages
are translations of the original instructions.

1. D

EFINITIONS

1.1.

Meaning of warnings and symbols

Warnings in this manual are classified according to their severity and
probability of occurrence.

Some types of danger are represented by special symbols:

ERHQW1

ERLQW1

ERHQW1

ERLQW1

ERHQW1

ERLQW1

Outdoor unit for air to water heat pump

Installation manual

CAREFULLY READ THESE INSTRUCTIONS BEFORE
INSTALLATION. THEY WILL TELL YOU HOW TO INSTALL
AND HOW TO CONFIGURE THE UNIT PROPERLY.
KEEP THIS MANUAL IN A HANDY PLACE FOR FUTURE
REFERENCE.

DANGER

Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.

WARNING

Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.

CAUTION

Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate injury. It may also
be used to alert against unsafe practices.

NOTICE

Indicates situations that may result in equipment or
property-damage accidents only.

This symbol identifies useful tips or additional information.

Electric current.

Danger of burning and scalding.