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NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.

7

IMPORTANT! IF THE AIR GATE IS INSTALLED 
UPSIDE DOWN (WITH THE NOTCH POSI-
TIONED ON THE UPPER HALF) IT WILL NOT 
WORK PROPERLY.  REFER TO FIGURE 9.

  

c.

 Ensure the air gate arm remains attached  

to the air gate, secure the Air Gate to the 
fi replace, with the screws provided, as shown 
in 

Figures 12 & 13

.

 

d

. Verify the mechanism is working by pulling 

to open and pushing to close.

3. 

Install the Outside Air Collar with the screws 
removed earlier (see 

Figure 14

)

.

Assemble the Air Gate and Arm as shown.

Air Gate Assembly

 Air Gate Assembly

Air Gate Arm

Air Gate Arm

Figure 9- 

Outside Air Kit Gate

Right Outside Panel 
on Fireplace

Firebox

 Feed The Arm Through Side Frame Opening

 Using a screwdriver bend this tab outward, if 
necessary, for the arm to clear the opening

Align Air Gate Assembly to Opening

Secure Air Gate Assembly 4 Places

Front Face

Figure 10

 - 

Air Gate Assembly to Fireplace

Reinstall Outside Air Collar

Figure 12 - 

Position Air Gate

Figure 13 - 

Install Screws

Figure 11 - 

Air Gate Arm in Front

Figure 14 - 

Reinstall Connector

4. 

Install an Outside Air Kit  (with duct and hood) 
per the instructions provided with kit.

 

a. 

If the outside air kit is NOT installed, you 

must install the Outside Air Cover provided 
with the instructions kit.

 b.

 If an outside air kit IS installed, the Outside 

Air Kit Gate must be installed (see 

Page 23 

of ordering information).  

The Outside Air Kit Gates are required 
on all indoor installations only.  They 
are not approved for use on oudoor 
installations. 

Air Gate Operation Instructions

Install the Air Gate Kit per the instructions 
provided with kit (see

 

Page 23

 for ordering 

information).

Figure 15

Combustion Air Actuator

Pull Forward to Open, 
Push Back to Close

To operate, push the end of the actuator arm 
to the left as shown in 

Figure 15

, until it "pops" 

free of its "locked" position.  Pull the actuator 
forward to open the combustion air door, and 
push it back to close.  To "lock" the combustion 
air door closed, ensure the actuator is pushed 
all the way back then push the end of the actua-
tors to the right until the step in the actuator 
moves behind the appliance front face within 
the slotted opening.

Operate the actuator through several cycles 
including the "lock" position.  Ensuring proper 
operation and freedom of movement.  Return 
the actuator arm to the locked position.

Air Gate Kit (purchased separately)

Position the Air Gate Assembly as Shown

Arm

Side Frame 
Opening

When assembled onto appliance, the 

notch here must be positioned as shown

Summary of Contents for Merit Plus MP-420D

Page 1: ...EQUIPPED TO BE READILY IN STALLED OUTDOORS IF INSTALLED INDOORS YOU MUST INSTALL THE COMBUSTION AIR COVER PROVIDED WITH THE INSTALLATION KIT OR PURCHASE THE OPTIONAL OUTSIDE AIR KIT GATE OAKG OD SEE...

Page 2: ...tate and national codes and regulations 3 ThisfireplacemustbeinstalledwithSecurity Chimneys FTF8 8 203mm inside diam eter Chimney System only This fireplace is intendedforindoororoutdoorinstallations...

Page 3: ...always maintain minimum clearances to combustible materials and do not violate any specific installation requirements These fireplaces have been tested and listed by OMNI Test Laboratories Inc Report...

Page 4: ...materials Outdoor installations less than 15 height require chimney clearance of 2 air space to insulation and construction materials In Canada the chimney and fireplace outer wrapper require a minimu...

Page 5: ...kept within the shaded areas illustrated in Figure 7 CLEARANCES Minimum clearance to combustibles for the appliance is as follows sides and back 1 25 mm floor 0 0mm adjacentwall 12 305 mm ceiling 37 1...

Page 6: ...t If you plan to raise the fireplace and hearth extension build the platform assembly then position fireplace and hearth extension on top Secure the platform to the floor to prevent possible shifting...

Page 7: ...the outside air kit is NOT installed you must install the Outside Air Cover provided with the instructions kit b IfanoutsideairkitISinstalled theOutside Air Kit Gate must be installed see Page 23 of o...

Page 8: ...ons Outside Air Kit Installation provided These appliances are equipped with a com bustion air inlet collar so that it is possible to duct combustion air from the outdoors to the firebox To accomplish...

Page 9: ...g Materials if any Rough Framing Face Unfinished Shown Combustion Air Kit Optional Framing Dimensions A 46 1 2 1181 mm B1 43 1 2 1105 mm B2 60 1 2 1537 mm C 33 828 mm D 17 1 2 445 mm E 76 1 4 1937 mm...

Page 10: ...ions must not interfere with circulating grillwork Figure 19 Figure 20 A B Ceiling Framing C D Roof Framing Framing Dimensions for Ceiling Inches millimeters Flue Type A B FTF8 Vertical USA 14 1 2 368...

Page 11: ...les espaceurs du dessus du foyer voir le sch ma 13 ne peuvent tre retir es ou modifi es vous ne pouvez pas entaillez le colombage pour ajuster autour ou tre install plus bas que les espaceurs Le colom...

Page 12: ...and outer wrapper require a minimum 2 air space to insulation and construction materials Reference Figures 19 20 and charts Framing DimensionsforCeilingandRoof whichspecify minimum ceiling and roof di...

Page 13: ...e the building must be con structed with galvalume outer sections only Theappropriatemodeldesignationsarelocated in the back of this manual F8FS30 Firestop Spacer FTF8 S4 Stabilizer 1 Min Air Space 30...

Page 14: ...as noted in Step 4 Step 6 Select the proper Security Chimneys roof flashing based on pitch of roof Use chart below for selection Figure 37 Note Do not caulk or seal the ventilating open ings or seal t...

Page 15: ...chimney must be at least 2 above this reference point In all cases thechimneycannotbelessthen3 above the roof at the edge of the chimney The 2 in 10 rule is necessary in the interest of safety but doe...

Page 16: ...36 48 11 0 11 1 0 0 0 17 1 5 0 1 0 0 21 1 9 2 0 0 0 27 2 3 1 1 0 0 35 2 11 0 0 1 0 47 3 11 0 0 0 1 51 4 3 0 1 1 0 57 4 9 1 0 0 1 63 5 3 0 1 0 1 67 5 7 2 0 0 1 73 6 1 1 1 0 1 81 6 9 0 0 1 1 93 7 9 0 0...

Page 17: ...the Straight Up In stallation Instructions for cutting and framing ceiling and roof openings Note See Framing and Dimension Chart for the sizes of the ceiling and roof openings The size of the roof op...

Page 18: ...ilizer Considerthiswhen determining the need for a stabilizer Note Do not apply excessive pressure to any subsequent chimney section following return elbow assembly when installing Ensure that each su...

Page 19: ...c tions are placed lower than 18 inches from the fireplace opening These fireplaces have been marked with a maximum rating of 26 000 BTU to assure that homeowners do not exceed the allowable limits fo...

Page 20: ...ux non combustibles il se pourrait qu il n y ait pas suffisament de d gagement pour installer les portes de verre de votre choix Assurez d avoir un d gagmet suf fisant tout moment afin de ne pasinterf...

Page 21: ...es 416 x 1 Answer TheminimumrequiredthicknessoftheMicore160is 417 there fore round up to nearest standard thickness available which is 1 2 Using the r formula Note To convert inches to millimeters div...

Page 22: ...ormal wall decor with elaborate mantels to rustic wood paneling or warm brick facings Only noncombustible materials like stone tile brick etc may overlap the black front facing Do not extend these mat...

Page 23: ...ith fireplace Shownhereforre placement purposes only Locking Band 63L60 FLB Ref Form 750 080M Spark Arrester 63L57 FSA 2 Ref Form 750 198M INSTALLATION COMPONENTS The following items are available for...

Page 24: ...n For open top shrouds 96L20 FTF8 CTT Ref Form 750 077M Chimney Pack conventional Convenience Pack Residential 63L70 FTF8 CP7 Contains 3 FTF8 36 1 F8FS 1 F8F6 1 FTF8 CTD 7 P C 8 F T F R O I R E P U S...

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