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General Glass Information
Glass Cleaning
It will be necessary to clean the glass periodically. During start-up,
condensation, 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 initially the glass be cleaned two or three times with non-abrasive
common household glass cleansers and warm water. After that, the glass
should be cleaned two or three times a season depending on the
circumstances.
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
REPLACEMENT GLASS FOR BOTH DIRECT VENT UNITS
Only Robax ceramic or coated Neaoceram glass may be used for Model
ZDV6000 & MQRB3328. Either tempered or ceramic glass may be
used for Model ZDV3320 & MQRB3328T. Must be minimum 5mm
thick.
Removal of the Glass Door
1. Unfasten the two latches located behind upper grill.
2. To remove, pull frame forward and lift from bottom door retainer.
3. To replace glass, clean all materials from door frame. Using a high
heat silicone (temperature-resistant to 500°F (260°C) apply a 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.
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
provide a union so that gas line can be easily disconnected for burner or fan
servicing. 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
utility if any questions arise concerning pipe sizes.
6. A 1/8” NPT plugged tappings are accessible 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 pressure 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.
1/2” x 1/2” SHUTOFF VALVE
1/2” x 3/8” UNION
1/2” GAS SUPPLY
1/2” NIPPLE
3/8” NIPPLE
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 ref-
erence to the state of Massachusetts state code CMR238.
Gas Specifications
Model Fuel Gas Control Maximum Input
ZDV6000N Natural Gas Millivolt 25,000 BTU Hi
(Adjustable) 21,000 BTU Lo
ZDV6000LP Propane Millivolt 25,000 BTU Hi
(Adjustable) 20,000 BTU Lo
ZDV3320N Natural Gas Millivolt 21,000 BTU Hi
(Adjustable) 15,000 BTU Lo
ZDV3320LP Propane Millivolt 21,000 BTU Hi
(Adjustable) 15,000 BTU Lo
MQRBZDV3328N Natural Gas Millivolt 25,000 BTU Hi
(Adjustable) 17,000 BTU Lo
MQRBZDV3328LP Propane Millivolt 25,000 BTU Hi
(Adjustable) 20,000 BTU Lo
MQRBZDV3328NT Natural Gas Millivolt 21,000 BTU Hi
(Adjustable) 15,000 BTU Lo
MQRBZDV3328LPT Propane Millivolt 22,500 BTU Hi
(Adjustable) 17,500 BTU Lo
Gas Inlet SIT or Robertshaw 3/8” NPT
Gas Supply Minimum Normal Maximum
Pressure (in w.c.)
Natural Gas 5.5 7.0 9.0
Propane 10.8 11.0 12.0
Manifold Natural Gas 3.5 in. w.c.
Pressure Propane 10.5 in. w.c.
Orifice Size: #40 NG (0-4500ft) Primary Air: 3/16”
ZDV6000 #52 LP (0-4500ft) Primary Air: 7/16”
Orifice Size: #43 NG (0-4500ft) Primary Air: 1/16”
ZDV3320 #53 LP (0-4500ft) Primary Air: Fully Opened
Orifice Size: #40 NG (0-4500ft) Primary Air: 1/16”
MQRB3328 #52 LP (0-4500ft) Primary Air: 5/16”
Orifice Size: #44 NG (0-4500ft) Primary Air: 1/16”
MQRB3328T #53 LP (0-4500ft) Primary Air: 5/16”