background image

6

• Do not position where the discharge air could blow

directly on the thermostat.

• The unit should not be positioned directly above any

obstruction.

• The unit must be installed square and level.

• The condensate drain should have sufficient downward

slope (1 in. per 100 in.) in any horizontal run between
unit and drain.

Step 3 — Mount the Unit

INSTALLING HANGER BOLTS (UNDER CEILING
MOUNT) — Install the hanger bolts at the locations shown in
Fig. 6. Use 

3

/

8

-in. all-threaded rod. For unit weight and mount-

ing dimensions, see Table 3.

Table 3 — Unit Weight and Mounting Dimensions 

(Under Ceiling Mount)

MOUNTING UNIT (UNDER CEILING MOUNT)  — The
unit can now be lifted on to the hanging rods for under ceiling
mounting.

1.

Use rods and fasteners for under ceiling mount to suspend
the hanging bracket. 

2.

Secure the hanging brackets in position with locknuts and
washers on both sides. Ensure the threaded rod does not
protrude more than 1 in. below the mounting hole on the
hanging bracket as shown in Fig. 7.

3.

Remove the side board and grille from the unit as shown
in Fig. 8 (does not apply to unit size 048).

4.

Slide the unit backwards onto the hanging bracket until
the mounting hole on the unit lines up with the mounting
hole on the hanging bracket. Secure the unit using mount-
ing bolts as shown in Fig. 9.

IMPORTANT: 

Be sure that the ceiling grid is supported

separately from the unit. The ceiling grid must not be
supported by an part of the unit or any associated wir-
ing or piping work.

OB

S

TRUCTION

OB

S

TRUCTION

24 in.
min.

OB

S

TRUCTION

a40-1859

24 in.
min.

24 in.
min.

Fig. 5 — Distance from Wall or Obstruction

A

B

HANGING
BRACKET

Fig. 6 — Hanging Bracket Locations

40VMU UNIT

WEIGHT (lb)

DIMENSION (in.)

A

B

012

57

35 

3

/

4

7

/

8

015-024

62

35 

3

/

4

7

/

8

030

77

47

7

/

8

036,048

106

60 

3

/

4

7

/

8

Fig. 7 — Mounting the Hanging Bracket

0.

8

 – 1 in.

WA

S

HER

NUT

HANGING
BOLT

HANGING BRACKET

A40-1

8

62

S

IDE BOARD

GRILLE

Fig. 8 — Removing Side Board and Grille

Fig. 9 — Securing Unit To Hanging Bracket

HANGING
BOLT

HANGING
BRACKET

MOUNTING
BOLT

Summary of Contents for 40VMU012 Series

Page 1: ...he Canadian Electrical Code CSA Ca nadian Standards Association C22 1 Understand the signal words DANGER WARNING and CAUTION DANGER identifies the most serious hazards which will result in severe pers...

Page 2: ...es may result in damage to equipment For information about replacement oil type and viscosity see the Installa tion Start Up and Service Instructions for the 38VMAH and 38VMAR outdoor units UNIT 40VMU...

Page 3: ...d sub MDC Connecting wire 1 Occupancy sensor connecting wire Gas side copper pipe For 012 024 only 1 For routing refrigerant pipes to the side of the unit Liquid side copper pipe For 012 024 only 1 Ga...

Page 4: ...A B C D Fig 2 40VMU012 030 Dimensions 40VMU UNIT SIZE DIMENSION in A B C D 012 024 39 26 8 19 7 8 030 50 1 2 26 8 31 1 4 66 27 10 42 a40 1857 1 8 Fig 3 40VMU036 048 Dimensions NOTE All dimensions show...

Page 5: ...INSTALLATION To save time and to reduce the possibility of costly errors set up a complete sample installation in a typical room at jobsite Check all critical dimensions such as pipe wire and duct co...

Page 6: ...otrude more than 1 in below the mounting hole on the hanging bracket as shown in Fig 7 3 Remove the side board and grille from the unit as shown in Fig 8 does not apply to unit size 048 4 Slide the un...

Page 7: ...indoor unit Refrigerant piping connection between indoor and out door units should be performed once the units are secured at their respective installation locations The refrigeration piping starts a...

Page 8: ...might cause disturbance on the controls side See Fig 15 for wiring diagram OUTSIDE DIAMETER in RECOMMENDED TORQUE ft lb 1 4 15 3 8 26 1 2 41 5 8 48 40VMU SIZE DIMENSIONS in a b c d 012 2 1 4 2 1 4 4 4...

Page 9: ...Board 1 CN1 CN3 CN18 CN27 CN24 CN11 CN5 CN52 CN54 CN12 CN15 CN9 CN8 CN22 vertical CN2 3 Level CN2 1 vertical EARTH POWER IN U E L B R E D L1 L2 G Y GM GM GM T2B UE L B T2A WHITE T1 T0 D E R Display b...

Page 10: ...ion wiring of the heat pump and heat recovery sys tems Fig 16 Communication Wire Connection To outdoor indoor MDC units comm bus To wired controller comm bus XT2 3 4 3 4 3 4 LEGEND ACB Auxiliary Contr...

Page 11: ...HB Touch screen wired controller NOTE Power from IDU Maximum wiring length L1 L3 3937 ft 16 AWG 2 Core Stranded Shield L5 3937 ft 16 AWG 2 Core Stranded Shield L6 L7 L8 L9 820 ft 16 20 AWG 2 Core Stra...

Page 12: ...1 L Indoor unit 1 Indoor unit 2 HA HB HA HB HA HB HA HB HA HB HA HB Indoor unit 3 Indoor unit 4 Indoor unit 5 Indoor unit 6 Maximum wire length L1 L2 3937 ft 16 AWG 2 Core Stranded Shield L3 3937 ft 1...

Page 13: ...y with suitable cleaning agent Clean the grille and panel if applicable EVERY 12 MONTHS Follow 6 month maintenance schedule In addition Be sure all electrical connections are secure Check condensate p...

Page 14: ...indoor unit the display shows FE 00 see Fig 26 Otherwise the display shows the current address of the indoor unit Click TEMP UP or TEMP DOWN to change 00 to the desired address as shown in Fig 27 The...

Page 15: ...3 Press TEMP UP or TEMP DOWN to choose the ad dress see Fig 29 Press MENU OK to send this address to the IDU 4 Press BACK twice or wait 30 sec to automatically exit the parameter settings menu Fig 28...

Page 16: ...ror Between Indoor and Outdoor Unit E2 Check Indoor Ambient Temperature Sensor T1 T0 E4 Check Evaporator Temperature Sensor T2B E5 Check Evaporator Outlet Temperature Sensor T2A E6 Check DC Fan Motor...

Page 17: ...r Data Storage Chip or PC board fault Replace PC board E9 Communication Error Between Indoor Unit and Controller Signal wires are short circuited or discon nected Check or reconnect signal wires Signa...

Page 18: ...display board The de fault display is Fahrenheit To change from Fahrenheit to Cel sius press the button and hold for 5 seconds ON OFF 1 2 3 4 a40 1923 POSITION 1 START UP OFF Auto Addressing Mode Def...

Page 19: ......

Page 20: ...right to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53400035 01 Printed in U S A Form 40VMU 1SI Pg 20 8 16 Replaces New...

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