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TECHNICAL APPENDIX

Unit Capacity

Total cooling capacity can be determined by using
correction factors C1, C2 and C3.

Given cooling capacity = Cooling capacity at
standard rating conditions x C1 x C2 x C3.
C1 = Capacity correction factor for temperature
C2 = Capacity correction for piping length
C3 = Capacity correction for indoor unit fan speed

Capacity correction factor for temperature

20

10

15

20

25

30

35

25

30

35

40

45

Air intake dry bulb temperature, outdoor unit (CDB)

Inlet air wet b

ulb temperatur

e

, indoor unit (CWB)

R.C.

120%

110%

100%

90%

85%

Capacity correction factor C1

Operating temperature range

DECLARATION OF CONFORMITY

Capacity correction factor for piping length (C2)

Piping length (m)

Correction factor C2

Indoor unit

10

0.98

5

1.00

Cooling mode

Heating mode

Maximum

Minimum

+ 19

º

C

(– 5 with low ambient kit)

– 8

º

C

+ 46

º

C

+ 28

º

C

(heat pump mode)

Fan speed

Correction factor C3

Indoor unit

High

1

Medium

0.90

Low

0.75

R.C.

 = Standard rating conditions :

Indoor 27

°

C DB / 19.5

°

C WB

Outdoor 35

°

C DB / 24

°

C WB

Capacity correction factor for indoor fan speed (C3)

Operating temperature limits

DE - COMMISSIONING DISMANTLING & DISPOSAL

This product contains refrigerant under pressure, rotating parts, and electrical connections which may be a

danger and cause injury!

All work must only be carried out by competent persons using suitable protective clothing and safety precautions.

Read the Manual

Risk of electric shock

Unit is remotely

controlled and may

start without warning

  1.

Isolate all sources of electrical supply to the unit including any control system supplies switched by the unit. Ensure
that all points of electrical and gas isolation are secured in the OFF position. The supply cables and gas pipework may
then be disconnected and removed. For points of connection refer to unit installation instructions.

 2

. Remove all refrigerant from each system of the unit into a suitable container using a refrigerant reclaim or recovery unit.

This refrigerant may then be reused, if appropriate, or returned to the manufacturer for disposal.

Under No

circumstances should refrigerant be vented to atmosphere.

 Where appropriate, drain the refrigerant oil from each

system into a suitable container and dispose of according to local laws and regulations governing disposal of oily
wastes.

3.

Packaged unit can generally be removed in one piece after disconnection as above. Any fixing down bolts should be
removed and then unit lifted from position using the points provided and equipment of adequate lifting capacity.
Reference MUST be made to the unit installation instructions for unit weight and correct methods of lifting. Note that
any residual or spilt refrigerant oil should be mopped up and disposed of as described above.

4.

After removal from position the unit parts may be disposed of according to local laws and regulations.

YORK

®

 International Corporation

035T83169-001

Summary of Contents for MBC-MBH 25

Page 1: ...nditioning system should only be carried out by trained and qualified personnel Regular maintenance operations such as cleaning the coils and air filters must be performed to keep the units in proper...

Page 2: ...Outdoor Unit it Power Supply Indoor Unit Fan Air flow Running Current Input Power Electric Heater MBC MBH MOC MOH 220 240 1 50 or 380 415 3 50 Models Power Supply High Static Duct Type MBC MBH P with...

Page 3: ...0 924 Model MBC MBH25 H mm 300 W mm 710 D mm 300 1404 MBC MBH35 MBC MBH45 MBC MBH50 55 MBC MBH65 400 400 400 400 A mm 400 220 220 220 220 220 CONTROL BOX MBC MBH 35 65 LH VIEW REAR VIEW RH VIEW FRONT...

Page 4: ...r 250 Plenum Electric Heater CLEARANCE REQUIRED FOR OUTDOOR UNITS Unit A B C D E 25 400 200 100 300 600 35 400 200 100 300 800 45 400 200 100 300 800 55 400 200 100 300 800 65 400 200 100 300 800 MOC...

Page 5: ...hout any upward slopes An elbow trap at least 50 mm in height must also be provided If possible install a U bend fitted with an inspection cap REFRIGERANT PIPING CONNECTIONS Where the condensate lines...

Page 6: ...H Airflow 1800 2000 3200 2200 2400 2600 2800 3000 Available Ext Static Pa HI ME LO Fan Performance MBC MBH 35 250 200 150 100 50 0 1400 1600 1800 415 470 525 580 635 690 745 800 L S CMH 2000 2200 Airf...

Page 7: ...ssor start up will be delayed until 3 minutes has passed SYSTEM OPERATION MODE SELECTION There are five different operating modes Cool Only and Heat Pump Units Cooling mode Electric Heating Units Only...

Page 8: ...e control is equipped with a diagnostic information system to report operation of the unit as well as operational failures If your remote control does not operate properly first check the polarity of...

Page 9: ...fore start up Each season before start up MAINTENANCE OPERA COMPONENT TIONS 1 Clean with a vacuum cleaner or tap gently then wash in warm water 40 C with a mild detergent 2 Rinse and dry before replac...

Page 10: ...hing and safety precautions Read the Manual Risk of electric shock Unit is remotely controlled and may start without warning 1 Isolate all sources of electrical supply to the unit including any contro...

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