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General Glass Information
Glass Cleaning
It will be necessary to clean the glass periodically. During start-up, con-
densation, which is normal, forms on the inside of the glass and causes
dust, lint etc. to cling to the glass surface. Also, initial paint curing can
deposit a slight film on the glass. It is therefore recommended that ini-
tially the glass be cleaned two or three times with non-abrasive com-
mon household glass cleansers and warm water. After that, the glass
should be cleaned two or three times a season depending on the circum-
stances.
Cautions and Warnings
• Do not clean when the glass is hot.
• The use of substitute glass will void all product warranties.
• Care must be taken to avoid breakage of the glass.
• Do not operate this fireplace without the glass front or with a broken
glass front.
• Do not strike or abuse glass.
Glass Replacement
The glass should be replaced by a qualified person.
REPLACEMENT GLASS FOR BOTH DIRECT VENT UNITS
These models can use either tempered glass or Robax ceramic or coat-
ed Neaoceram glass. Must be 5mm thick.
To replace glass, clean all materials from door frame. Scrape off old
silicone down to metal. Using a high heat silicone (temperature-resis-
tant to 500°F (260°C) apply a continuous bead of approximately 1/32”
to all four sides of frame and insert glass with new gasket. Frame
should be on flat surface, with a small amount of weight pressing glass
into silicone. Let dry approximately 15 to 20 minutes. The door can be
re-installed by reversing Steps 1 & 2. Use caution when removing bro-
ken glass, wear gloves.
Removal of the Glass Door
1. Unlatch the two latches located behind the upper grill.
2. To remove, pull frame forward and lift from bottom door retainer.
Gas Line Installation
This gas appliance should be installed by a qualified installer in accordance with
local building codes and with current CAN/CGA - B149.1 or .2 installation codes for
Gas Burning appliances and equipment in Canada and the National Fuel Gas Code
ANSI Z223 in the U.S.A.
1. The gas pipeline can be brought in through either the right or the left side of the
appliance. A knockout is provided at either location to allow for the gas pipe
installation and testing of any gas connection.
2. The gas control inlet is 3/8” NPT. Typical installation layout for rigid pipe is
shown at right.
3. When using
copper
or
flex connector
, use only approved fittings. Always pro-
vide a union so that gas line can be easily disconnected for burner or fan servic-
ing. See gas specification for pressure details and ratings.
4. When a vertical section of gas pipe is required for the installation, a condensa-
tion trap is needed. See CAN/CGA-B149.1 or .2 for code details.
5. For natural gas, a minimum of 3/8” iron pipe with gas minimum pressure of 4.5”
w.c. must be used for supply from the gas meter. Consult with the local gas utili-
ty if any questions arise concerning pipe sizes.
Gas Specifications
Models
MQZDV3318N
MQZDV3318LP
MQZDV3622N
MQZDV3622LP
Fuel
Natural
Propane
Natural
Propane
Gas Control
Millivolt adjustable
Millivolt adjustable
Millivolt adjustable
Millivolt adjustable
Input
Maximum
19,000 BTU
18,000 BTU
21,000 BTU
21,000 BTU
Low
12,100 BTU Low
11,900 BTU
14,200 BTU
16,200 BTU
Orifice Size
#45
#55
#43
#54
(0 - 4500 ft)
Air Shutter
3/16” Open
9/32” Open
3/16” Open
3/8” Open
Gas Inlet Size
S.I.T. 820 Nova, 3/8” NPT
Gas Supply Pressure
Minimum
Normal
Maximum
Natural Gas
5.5”
7”
9”
Liquid Propane
11”
11”
12”
Manifold Pressure
Natural Gas
Liquid Propane
Manifold Pressure High
3.5 IN. W.C./.87 KPa
10 IN. W.C./2.61 KPa
Manifold Pressure Low
1.6 IN. W.C./.40 KPa
6.3 IN. W.C./1.57 KPa
6. A 1/8” NPT plugged tappings are accessi-
ble for test gauge connection both on the
inlet and outlet of the gas valve.
7. Turn the gas supply ON and check for
leaks. DO NOT USE OPEN FLAME FOR
THIS PURPOSE. Use an approved leak
testing solution.
8. The appliance and its individual shutoff
valve must be disconnected from the gas
supply piping system during any pressure
testing of that system at test pressures in
excess of 1/2 PSIG (3.5 KPa).
9. The appliance must be isolated from the
gas supply piping system by closing its
individual shutoff valve during any pres-
sure testing of the gas supply piping system
at test pressures equal to or less than 1/2
PSIG (3.5 KPa).
Note: The gas line connection may be made of 1/2” rigid pipe or an approved
flex connector. Since some municipalities have additional local codes, it is
always best to consult your local authorities and the current CAN/CGA - B149.1
or .2 installation code in Canada or the National Fuel Gas code ANSI Z223.1 in
the U.S.A.
Important:
Always check for gas leaks with a soap and water
solution. Do not use open flame for leak testing.
For the state of Massachusetts a
T-handle gas shut-off valve
must be used on a gas appliance.
This T-handle gas shut-off valve must be listed and approved by the state of Massachusetts.
This is in reference to the state of Massachusetts state code CMR238.
