Lennox Hearth Products Direct Vent MPD-33 Series Installation Instructions Manual Download Page 5

5

NOTE: DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

h

c

t

i

P

f

o

o

R

H

)

t

e

e

f

(

2

1

/

6

o

t

t

a

l

F

0

.

1

2

1

/

7

o

t

2

1

/

6

r

e

v

O

5

2

.

1

2

1

/

8

o

t

2

1

/

7

r

e

v

O

5

.

1

2

1

/

9

o

t

2

1

/

8

r

e

v

O

0

.

2

2

1

/

0

1

o

t

2

1

/

9

r

e

v

O

5

.

2

2

1

/

1

1

o

t

2

1

/

0

1

r

e

v

O

5

2

.

3

2

1

/

2

1

o

t

2

1

/

1

1

r

e

v

O

0

.

4

Figure  4

Figure 5 -  Side Elevation View

3"

(76 mm)

12"

(305 mm)

Termination Kit

Combustible Projection

greater than

 inches in length

Combustible Projection

2-1/2 inches or less in length

18"

(457 mm)

Ventilated

Soffit

Unventilated

Soffit

Horizontal Vent Termination Clearances

2-1/2

Termination Kit

All horizontal terminations

may be located as close

as 6” (152mm) to any
(non-combustible and

combustible) exterior

sidewall.  This distance

may be decreased to

2” (51mm) for non-

combustible exterior

sidewalls only, if the

SV4.5HT-2 termination

is used.

Horizontal Vent Termination Clearances

The horizontal vent termination must have a
minimum of 3" (76 mm) clearance to any over-
head combustible projection of 2-1/2" (64 mm)
or less. See 

Figure 5.  For projections exceed-

ing 2-1/2"  (64 mm), see 

Figure 5.   All horizontal

terminations may be located as close as 6"
(152mm) to any (non-combustible and com-
bustible) exterior sidewall.  This distance may
be decreased to 2" (51mm) for non-combus-
tible exterior sidewalls only, if the SV4.5HT-2
termination is used.  For additional vent location
restrictions refer to 

Figure 8 on page 7.

Terminate multiple vent terminations accord-
ing to the installation codes listed on this
page.

Vertical Vent Termination  Clearances

VENT TERMINATION CLEARANCES

These instructions should be used as a guide-
line and do not supersede local codes in any
way. Install vent according to local codes,
these instructions, the current National Fuel
Gas Code (ANSI-Z223.1) in the USA or the
current standards of CAN/CGA-B149.1 and -
B149.2 in Canada.

Terminate single  vent caps relative to building
components according to 

Figure 4.

Step 3. (page  9)

Install the vent system and

exterior termination.

Step 4. (page 22) Field Wiring

a. Millivolt Appliances – Install the operating

control switch (not factory provided) and
bring in electrical service line for forced air
circulating blower (optional equipment).

b. Electronic Appliances – Field wire and

install operating control switch.

Step 5. (page 22) Install blower kit (optional

equipment).

Step 6. (page 23) Make connection to gas

supply.

Step 7. (page 24) Install the logs, decora-

tive volcanic stone and glowing embers.

Step 8. (page 24) Checkout appliance op-

eration.

Step 9. (page 24) Install glass door frame

assembly.

Step 10. (page 25) Adjust burner to ensure

proper flame appearance.

Step 11. (page 25) Install the hoods.

TYPICAL INSTALLATION SEQUENCE

The typical sequence of installation follows,
however, each installation is unique resulting in
variations to those described.
See the page numbers references in the follow-
ing steps for detailed procedures.

Step 1.

(page 6)

Construct the appliance

framing.  Position the appliance within the
framing and secure with nailing brackets.

Step 2. (page 6)

Route gas supply line to

appliance location.

12

X

Roof Pitch is X/12

2 FT
MIN.

2 FT MIN.

Lowest

Discharge

Opening

H*

*H = MINIMUM HEIGHT FROM ROOF TO

LOWEST DISCHARGE OPENING OF VENT

TERMINATION HEIGHTS FOR VENTS ABOVE

FLAT OR SLOPED ROOFS

Horizontal Overhang

Vertical

Wall

Vent

Termination

Storm Collar

Concentric

Vent Pipe

Flashing

1 inch (25.4 mm) Minimum
Clearance to Combustibles

Summary of Contents for Direct Vent MPD-33 Series

Page 1: ...850 014CF Ce manuel d installation est disponible en francais simplement en faire la demande Num ro de la pi ce 850 014CF s l e d o M t l o v i l l i M s l e d o M c i n o r t c e l E M N C 8 2 3 3 T...

Page 2: ...ntsmanu facturedbySecurityChimneysInternationaland Z Flex Model GA Venting Systems listed to UL1777 and ULCS635 manufactured by Flex master Canada Limited These approved vent system components are lab...

Page 3: ...rving a separate solid fuel burning appliance These heater rated appliances are intended for use as supplemental heaters only Carbon Monoxide Poisoning Early signs of carbon monoxide poisoning are sim...

Page 4: ...ble 2 APPLIANCE AND VENT CLEARANCES The appliance is approved with zero clearance to combustible materials on all sides as de tailed in Table 2 with the following exception When the unit is installed...

Page 5: ...e and do not supersede local codes in any way Install vent according to local codes these instructions the current National Fuel Gas Code ANSI Z223 1 in the USA or the current standards of CAN CGA B14...

Page 6: ...or securing the glass door Remove the door by tilting it outward at the bottom and lifting it up Set the door aside protecting it from inadvertent damage See Figure 53 on page 24 The fireplace should...

Page 7: ...o t a l u g e r r e t e m t e e f 5 1 f o t h g i e h a n i h t i w m c 1 9 t e e f 3 y l b m e s s a r o t a l u g e r r e t e m e h t e v o b a t e e f 5 1 f o t h g i e h a n i h t i w m c 1 9 t e...

Page 8: ...MPD 4540 Models Dimensions D and F occur when one 45 degree elbow is connected directly to the appliance collar MPD and MPDR units D E F A B MPD and MPDT units o N l e d o M A B C D E 8 2 3 3 T D P M...

Page 9: ...3 8 1 5 4 6 1 1 1 6 2 8 7 4 3 6 1 7 7 1 9 3 9 3 6 1 m m 6 4 1 1 3 4 9 0 1 6 3 0 0 1 6 4 1 1 8 7 6 6 8 8 3 4 4 0 2 2 6 7 0 2 2 6 7 6 0 4 Step 3 INSTALL THE VENT SYSTEM General Information Theseinstruc...

Page 10: ...ALL AND SECURELY TIGHTEN COVER PLATE SCREWS COULD RESULT IN LEAKAGE OF FLUEPRODUCTSINTOTHELIVINGSPACE VENTCOVERPLATEANDVENTSEALPLATE MUSTREMAINSECURELYINSTALLEDON UNUSED VENT COLLAR FAILURE TO DO SO C...

Page 11: ...2 5 2 1 8 1 0 1 0 6 0 7 5 9 2 2 5 2 1 9 1 0 0 1 6 0 7 5 2 3 2 5 7 3 9 1 0 0 0 0 5 5 7 3 2 5 7 9 1 1 0 0 0 5 6 5 1 4 2 5 2 1 0 2 0 0 0 7 0 7 6 4 2 5 0 2 1 0 0 7 0 8 2 5 2 1 2 0 1 0 7 0 8 4 6 2 2 2 0 0...

Page 12: ...nd number of elbows required Refer to Vertical Vent Figures and Tables on page 14 and 15 to select the type of vertical installation desired Vent sections are available in net lengths of 4 1 2 114 mm...

Page 13: ...ction to align with the required direction of the next vent run element Twist elbow sections in a clockwise direction only so as to avoid the possiblity of unlocking any of the previously connected ve...

Page 14: ...ed then 4 feet mini mum V vertical vent will be required This table shows a 1 V to 2 H ratio For every 1 foot of V vertical you are allowed 2 feet of H horizontal run up to a maximum horizontal run of...

Page 15: ...V1 Ceiling Firestop Spacer SV4 5VF Wall Firestop Spacer SV4 5HF When using Secure Flex use Firestop Spacer SF4 5VF When using Secure Flex use Firestop Spacer SF4 5HF Example If20feetof H horizontalven...

Page 16: ...Push the vent component against the previous section until it fully engages then twist the component clockwise running the dimples down and along the incline channels until they seat at the end of th...

Page 17: ...the telescopic vent section SV4 5LA as the last vent section For wall thicknesses greater than that shown in Figure 32 refer to Table 4 on page 18 This table lists the additional venting components ne...

Page 18: ...level Note Secure Vent components rigid vent pipe and terminal are shown in the figures SecureFlexcomponents flexibleventpipeand terminal may also be used Note Two45degreeelbowsmaybeusedinplace ofone...

Page 19: ...s meters meters H1 V H Wall Firestop Spacer SV4 5HF Ceiling Firestop Spacer SV4 5VF When using Secure Flex use Firestop Spacer SF4 5HF When using Secure Flex use Firestop Spacer SF4 5VF Example If 20...

Page 20: ...feet of H horizontal run up to a maxi mum horizontal run of 20 feet An elbow is acceptable as 1 foot of vertical rise except where an elbow is the only vertical component in the system See Figure 35...

Page 21: ...with the inlets of the four incline channels of the last vent sectionorcollar Pushontheadapteruntilitfully engages then twist the adapter clockwise run ning the dimples down and along the incline chan...

Page 22: ...and Honeywell Millivolt Wiring See Figure 43 1 Select any of the following optional con trols appliance mounted rocker switch or wall mounted switch thermostat oroneofthe optional remote control kits...

Page 23: ...G e t i h W l a r t u e N OPENING CONTROL COMPARTMENT DOOR The millivolt control valve has a 3 8 10 mm NPT thread inlet port The electronic control valve has a 1 2 13 mm NPT thread inlet port and is f...

Page 24: ...he firebox floor to the door s vee flange Close both the latches securely Electronic Appliance Checkout To light the burner turn ON the optional remote wall switch and turn the gas control switch to t...

Page 25: ...N 8 1 2 3 p o r P 2 1 3 1 Figure 54 The adjustment rod and associated adjustable air shutter is patented technology Flame ad justments can be made quickly and accurately to taste without the need of...

Page 26: ...ent door Any hearth extension used is for appearance only and does not have to conform to standard hearth extension installation requirements Note Combustible wall finish materials and or surround mat...

Page 27: ...m 0 1 6 h c n i 4 2 n o i t c e S 3 7 L 7 7 6 3 L 5 4 V S t n e V m m 4 1 9 h c n i 6 3 n o i t c e S 4 7 L 7 7 8 4 L 5 4 V S t n e V m m 9 1 2 1 h c n i 8 4 n o i t c e S 5 7 L 7 7 A L 5 4 V S n o i...

Page 28: ...x e l F r o f n i m r e T l a c i t r e V n o i t c e s r e t p a d A x e l F h t i w 2 1 2 1 r a l l o c t r o p p u s f o o r t n e v d i g i r f o d n a g n i h s a l f f o o r y l b m e s s a r a...

Page 29: ...ecuring screws WARNING THIS CONVERSION KIT SHALL BE INSTALLED BY A QUALIFIED SERVICE AGENCY IN ACCORDANCE WITH THE MANUFACTURER S IN STRUCTIONS AND ALL APPLICABLE CODES AND REQUIREMENTS OF THE AUTHORI...

Page 30: ...re 61 s m e t s y S T I S t l o v i l l i M n o i s r e v n o C s a G e n a p o r P o T l a r u t a N s t i K s l e d o M e p y T t i n U o N g o l a t a C 8 2 3 3 T D P M 8 2 3 3 R D P M t l o v i l...

Page 31: ...On Any Side Of The Hex Fitting b Attach manometer to the manifold side pressure test fitting and verify manifold pres sure reads 3 5 inches water column 0 87 kPa for natural gas and 10 0 inches water...

Page 32: ...it Remove the slotted cap screw o ring pressure regulating adjusting screw and spring Retain all parts for possible later use Install new components from the kit Black cap and red spring for propane g...

Reviews: