Vermont Castings UVS27R Mounting instructions
20007068 8/10 Rev. 11
Homeowner’s Installation
and Operating Manual
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7068
PinStar fa
cover
1/04
*Aftermarket: Completion of sale, not for purpose of
resale, from the manufacturer.
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UVS27 Vent-Free Gas Heater
20007068
Shell Dimensions .................................................................................................................4
Clearance Requirements .....................................................................................................5
Hearth Requirements .......................................................................................................... 5
Gas Specifications ...............................................................................................................6
Gas Inlet and Manifold Pressures ....................................................................................... 6
High Elevations ...................................................................................................................6
Odor During Operation ........................................................................................................6
Vent Free Features ..............................................................................................................7
Fresh Air Requirements ....................................................................................................... 7
Unpack the Firebox ............................................................................................................. 9
Install Optional Fan Kit ........................................................................................................ 9
Install ON/OFF Switch .......................................................................................................10
Thermostat Connections ................................................................................................... 10
Glass & Catalyst Installation ..............................................................................................10
Connect the Gas Supply LIne ...........................................................................................12
Install Log Set ....................................................................................................................12
Complete the Installation ...................................................................................................13
Your First Fire ....................................................................................................................15
Pilot and Burner Inspection ............................................................................................... 15
Flame & Temperature Adjustment ..................................................................................... 15
Flame Characteristics ........................................................................................................15
Lighting Instructions ..........................................................................................................16
Troubleshooting .................................................................................................................17
Firebox Cleaning and Inspection .......................................................................................19
Cleaning Procedure ...........................................................................................................19
Glass Replacement ...........................................................................................................19
Care of Cast Iron ...............................................................................................................19
Catalytic Combustor ..........................................................................................................20
......................................................................................................................21
Fan Kits 24
Glass / Catalyst Kit ............................................................................................................24
Remote Controls ...............................................................................................................24
Warming Shelf ...................................................................................................................24
....................................................................................................................................... 25
Fuels used in gas, woodburn-
ing or oil fired appliances, and the products of combus-
tion of such fuels, contain chemicals known to the State
of California to cause cancer, birth defects and other
reproductive harm.
California Health & Safety Code Sec. 25249.6
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UVS27 Vent-Free Gas Heater
20007068
In order to ensure safe and effective installation, this unit
must be installed only by a qualified agency, individual, firm,
corporation or company that is experienced in the instal-
lation, repair and servicing of this type of appliance and is
familiar with the building codes and installation techniques
appropriate in your area. Contact your hearth products
dealer or local gas supplier for the name of a qualified ser-
vice person.
In the Commonwealth of Massachusetts, all gas fittings and
installation of this heater shall only be done by a licensed
gas fitter or licensed plumber.
•
•
•
•
•
•
If any of the original wire as supplied with the ap-
pliance must be replaced, it must be replaced with a wire
of at least 105°F temperature rating.
Early signs of carbon
monoxide poisoning resemble the flu, with headaches,
dizziness, or nausea. If you have these signs, the heater
may not be working properly. Get fresh air at once! Have
the heater serviced. Some people are more affected by
carbon monoxide than others. These include pregnant
women, people with heart or lung disease or anemia,
those under the influence of alcohol, and those at high
altitudes.
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UVS27 Vent-Free Gas Heater
20007068
C
L
5004
UVS
Hearthmount specs
1/02
5"
(140 mm)
2556M"
(641 mm)
2656O"
(673 mm)
6"
(416 mm)
UVS27 Hearthmount specifications.
Drawing Not to Scale
Drawing Not to Scale
UVS27 freestanding shell dimensions.
C
L
C
L
5004
UVS27
Freestanding specs
1/02
9"
(229 mm)
266M"
(680 mm)
3"
(76 mm)
Valve Inlet
1456O"
(368 mm)
Valve Inlet
156"
(379 mm)
2556O"
(648 mm)
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UVS27 Vent-Free Gas Heater
20007068
The Freestanding Stove and Hearthmount Shell must
be installed on rigid flooring. If the appliance is installed
on any combustible surface other than wood flooring,
such as carpet or tile, a metal or wood panel must be
installed to extend the full length and width of the unit.
Maintain clearance, (empty space), between combus-
tible materials and the heater as specified below for the
appropriate firebox shell being installed.
BAC
D
ST101
Min. Clrnc
4/15/99 djt
BAC
D
ST102
Min. Clrnc
4/15/99 djt
ST101
ST102
A: Mantel/Trim* .........................35” (889 mm) / 2” (51 mm)
B: Side Wall/Trim* ..............................................2” (51 mm)
C: Rear Wall ........................................................0” (0 mm)
D: Max. Mantel Width ....................................13” (330 mm)
B
A
C
D
ST103
Min. Clrnc
4/15/99 djt
B
A: Ceiling .......................................................35” (889 mm)
B: Side Wall .......................................................2” (51 mm)
C: Rear Wall ........................................................0” (0 mm)
D: Max. Alcove Depth ....................................13” (330 mm)
ST103
FP599a
stove mantel heights
9/27/99 djt
S
T
U
V
W
X
Y
Z
A
B
C
D
E
F
G
H
ST599a
A 13” (330mm) S 35” (889 mm)
B 11¹⁄₄” (286 mm) T 30” (762 mm)
C 9³⁄₈” (241 mm) U 25” (635 mm)
D 7¹⁄₂” (191 mm) V 20” (508 mm)
E 5³⁄₄” (146 mm) W 15” (381 mm)
F 4” (102 mm) X 10” (254 mm)
G 2¹⁄₄” (57 mm) Y 5” (127 mm)
H 1” (25 mm) Z 2” (51 mm)
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UVS27 Vent-Free Gas Heater
20007068
Firebox weight / shipping 110 lbs.
The installation of your Vermont Castings stove
must conform with local codes, or in the absence of
local codes, with the National Fuel Gas Code ANSI
Z223.1/NFPA 54 - latest edition. (EXCEPTION: Do
not derate this appliance for altitude up to 4,500 feet
(1,370m). Maintain the manifold pressure at 3.5” w.c.
for Natural Gas and 11.0” w.c. for LP Gas.
Neither natural gas nor propane gas give off an odor
when burned. The nature of a vent free combustion
system, however, is such that odors may occasional-
ly be produced during heater operation when impuri-
ties exist in the immediate area. Cleaning solutions,
paint, solvents, cigarette smoke, candles, adhesives,
new carpet or textiles, etc., all can create fumes.
These fumes may mix with combustion air and can
create odor. Such odors will disappear over time,
however the condition can be alleviated by opening a
window or otherwise providing additional ventilation
to the area.
Inlet Minimum 5.5” w.c. 11” w.c.
Inlet Maximum 14” w.c. 14” w.c.
Manifold Pressure 3.5” w.c. 10” w.c. (MP)
11” w.c. (RP)
Natural LP (Propane)
Failure to keep the primary air opening(s) of the
burner(s) clean may result in sooting and property
damage.
*Natural Gas units with Glass & Catalyst installed; air
shutter is fully closed and rotated with bend outside of
burner for less restriction. Propane units have no air
shutter.
UVS27RN Nat Millivolt 28,000 19,500 Fully
Closed
UVS27RP Prop Millivolt 28,000 19,500 n/a
UVS27MN Nat Millivolt 28,000 19,500 Fully
Closed
UVS27MP Prop Millivolt 28,000 19,500 n/a
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UVS27 Vent-Free Gas Heater
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Any space within a home can be classified in the follow-
ing categories:
1) Unusually Tight Construction
2) Confined Space
3) Unconfined Space
First, determine which classification defines the intend-
ed space.
You must provide additional fresh air if the space falls
into this classification. Unusually Tight Construction is
defined as construction wherein:
a. walls and ceilings exposed to the outside atmo-
sphere have a continuous water vapor retarder with a
rating of one perm or less with openings gasketed or
sealed and
b. weather stripping has been added on openable win-
dows and doors and
c. caulking or sealants are applied to areas such as
joints around window and door frames, between sole
plates and floors, between wall-ceiling joints, between
wall panels, at penetrations for plumbing, electrical, and
gas lines, and at other openings.
If your home meets all of the three criteria above, you
must provide supplemental fresh air for the appliance
from outside the home as detailed on page 7, B.
If your home does not meet the above criteria, follow
the procedure below.
Use the following formula to determine if you have a
confined or unconfined space.
is defined as the room in which you will install
the heater plus any adjoining rooms with doorless pas-
sageways or ventilation grilles between the rooms.
The National Fuel Gas Code ANSIZ223.1/NFPA54
defines a confined space as a space whose volume is
less than 50 cubic feet per 1,000 BTU per hour, (4.8
m3 per kw), of the aggregate input rating of all appli-
ances installed in that space and an unconfined space
as a space whose volume is not less than 50 cubic feet
per 1,000 BTU per hour, (4.8 m3 per kw), of the ag-
gregate input rating of all appliances installed in that
space. Rooms communicating directly with the space
in which the appliances are installed, through openings
not furnished with doors, are considered a part of the
unconfined space.
Determine the volume of space, (length x width x
height). Include adjoining rooms connected by doorless
passageways or ventilating grilles.
The UVS27, Models 4030, 4036. 4040, 4046, 4085,
4090, is an unvented gas heating appliance tested and
listed to the ANSI standard Z21.11.2b-2004. This ap-
pliance is specifically configured to burn either Natural
Gas or Propane fuel, as indicated on the metal rating
plate attached to the rear shroud. The UVS27 is not fuel
convertible.
The stove is shipped fully assembled and ready for
installation.
The UVS27M is equipped with an SIT control for
manual use only.
The UVS27R is equipped with a Honeywell control
valve that allows thermostatic control, on/off switch or a
remote switch (not supplied).
Both models incorporate variable regulators that al-
low you to adjust burner heat output between HIGH,
(28,000 BTU), and LOW, (19,500 BTU). See the Opera-
tion Section for details.
The standing pilot incorporates an Oxygen Depletion
System (ODS/pilot) designed to shut off the appliance if
enough fresh air is not available.
Modern construction standards have resulted in homes
that are highly energy-efficient and that allow little heat
loss. Your home needs to breathe, however, and all
fuel-burning appliances within it require fresh air in
order to function properly and safely. Exhaust fans,
clothes dryers, fireplaces, and other fuel burning appli-
ances all use the air inside the building. If the available
fresh air is insufficient to meet the demands of these
appliances, problems can result.
The UVS27R/M Unvented heater has specific fresh air
requirements.
The following informa-
tion will help you insure that adequate fresh air is avail-
able for the heater to function properly.
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UVS27 Vent-Free Gas Heater
20007068
A room that is 18’ x 12’ x 8’ has a volume of 1728
cubic feet, ( length x width x height). An adjoining open
kitchen that is 10’ x 12’ x 8’ has a volume of 960 cubic
feet. An adjoining open dining room is 12’ x 12’ x 8’ with
a volume of 1152 cubic feet. The total space volume is
3840 cubic feet. (1728 + 960 + 1152).
Divide the volume of space by 50 cubic feet. The
result is the maximum BTU/Hr that the space can sup-
port.
3840 divided by 50 = 76.8 or 76,800 BTU/Hr.
Add the BTU/Hr ratings of all fuel-burning appliances
installed in the same space, including the following:
Gas Water Heater Gas Furnace
Gas Fireplace Logs Unvented Gas Heater
Vented Gas Heater* Other Gas Appliances*
Do not include Direct Vent appliances as these
utilize outside air for combustion and vent to the
outdoors.
Gas Range 55,000 BTU/Hr
Unvented Heater +33,000 BTU/Hr
Total 88,000 BTU/Hr
Compare the maximum BTU/Hr rating the space can
support with the total BTU/Hr used by the appliances.
76,800 BTU/Hr - max. the space can support
88,000 BTU/Hr - total used by appliances
In this example, the maximum BTU/Hr that the space
can support is less than the total used by the appli-
ances, the space is considered to be .
Additional air must be provided to meet the require-
ments of the Unvented heater.
A confined space may be ventilated in two ways:
Open up or provide at least two ventilating grilles to
an adjoining unconfined space. Use any of the options
illustrated in Figure 3.
Each of the two grilles must provide an opening of
at least 50 square inches, with all opening dimensions
being at least 3”. One grille must be located within 12”
of the ceiling; the other within 12” of the floor. (If the
total exceeds 100,000 BTU/Hr, additional grilles will be
required.)
Vent the room directly to the outdoors. (Provide
one square inch of opening for each 4,000 BTU/hr.
If the total BTU/Hr used by the appliances is less than
the maximum BTU/Hr the space is able to support,
the room meets theUnconfined spacecriteria and no
further ventilation is required.
For further information on ventilation guidelines and
sizing specifications follow the National Fuel Gas Code
NFPA 54/ANSI Z223.1 Section 5.3.
vent370-2
Ventilation options
3/26/99 djt
12”
12”
Option 3 -
Vents to
Adjoining
Room
Option 1
Vents to Ad-
joining Room
Option 2
- Remove
Door to
Adjoining
Rooms
VO370-2
Vent options to provide additional air.
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UVS27 Vent-Free Gas Heater
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Porcelain enamelled surfaces are fragile. Handle
porcelain enamelled castings tenderly. Familiarize
yourself with the assembly steps before you begin
and proceed with deliberation and care. If possible,
have assistance available.
Place enamelled castings on a soft, cushioned sur-
face until you are ready to assembly.
Avoid contact between the castings and other hard
surfaces or objects.
The UVS27 is shipped fully assembled on its back.
Unpack the stove and carefully set it upright.
1. Remove shroud assembly by loosening two (2) hex
head bolts on lower inside of shroud. Lift shroud as-
sembly up and away from stove.
2. Attach the fan to the rear shroud by engaging the
upper flange of the fan skirt under the lower edge of
the shroud and secure the skirt with the four screws
and one star washer provided. (Figs. 4, 5)
FK104
Install cover plate
Rheostat
Retaining Nut
Control Knob FK104
Attach rheostat to bracket.
MOTOR
SNAPSTAT
ON/OFF
RHEOSTAT
WHT
WHT
BLK
BLK
BLK
GRN
BLK
ST236
FK26 wiring diagram
12/99
ST236
Fan wiring diagram.
4. Secure the snapstat wire harness to the shroud
panel using the wire tie provided.
5. Replace shroud and tighten the two (2) hex head
nuts on lower inside of shroud.
6. Route the rheostat control switch and wire forward
under the stove. Use the wire tie to secure the fan
and rheostat wire harnesses together to the tubing
under the bottom heat shield.
7. Install the rheostat onto the bracket to the left of the
valve. (Fig. 7)
ST344a
pinnacle
install fan
2/4/00
Upper
Flange
ST344a
Place upper flange behind lower edge of shroud.
ST345a
Correct position of fan skirt installation.
ST345a
pinnacle
fan in place
12/18/03
ST346a
Attach snapstat to inner shroud.
ST346a
install FK28
snapstat
12/18/03
3.
Feed the snapstat wire lead up between the inner and
outer rear shroud panels and secure the snapstat to
the upper right side of the inner shroud. (Fig. 6)
Failure to position the parts in accordance with these
diagrams, or failure to use only parts specifically ap-
proved with this heater may result in property dam-
age or personal injury.
10
UVS27 Vent-Free Gas Heater
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1. Remove screen. (Fig. 12) Remove rear, left and right
log bracket assembly by unfastening the two screws
which hold the burner in place.
18 40 feet
20 25 feet
22 16 feet
Do not use low voltage (24V) thermostats.
Check the table below for the appropriate gauge ther-
mostat wire to use for the length of lead required in your
installation.
1. Install the wall thermostat in the desired location and
run the wires to the stove location. Terminate these
leads with 1/4” female connectors.
2. Connect the thermostat wires to the valve. (Fig. 11)
OFF ON
Thermostat
(Optional)
Thermopile
Black
Black
Millivolt
Gas Valve
St124b
on/off/switch
wiring
1/11/00 djt
TP/TH
TP
TH
ST124b
ST124c
ON/OFF switch and optional Thermostat/Remote
wiring.
Thermostat/Remote
(Optional)
Thermopile
Black
Black
Millivolt
Gas Valve
St124c
Thermostat
wiring
1/11/00 djt
TP/TH
TP
TH
ST713
UVS27
screen removal
1/02
ST713
Remove screen.
Screen Hooks
The switch assembly parts are found in the parts bag.
1. Attach switch assembly to left rear side of stove
shroud using two screws and existing holes in
shroud. (Fig. 9)
2. Run wires down back of stove, under bottom of rear
shroud to valve.
3. Attach wires to valve terminals. (Fig. 10)
TP TH
TPTH
ST228
attach switch
wires to valve
12/99
ST228
Attach switch wires to valve.
ST315
attach switch assy
1/31/00 djt
Existing
Holes
Switch As-
sembly
Screws ST315
Attach switch assembly to rear shroud.
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UVS27 Vent-Free Gas Heater
20007068
2. Hold the burner at the right hand side and lift to clear
the right burner leg. Then pull to the right to clear the
injectors on the left hand side.
3. Turn burner upside down and remove air shutter.
Turn air shutter upside down and replace on burner.
(Fig. 13)
4. Replace burner. Slide the burner in at an angle
with left side lower than the right side. Slide the left
side onto the injectors, making sure the burner leg
remains at a 90° angle to the base. (Fig. 14) Lower
the right hand side down in to place. Make sure
the burner is as far left as possible and the injector
shoulders are inside the burner.
ST667
RNVOD
air shutter
converting
from NG to Lp
6/4/01 djt
Air Shutter as Shipped from Factory
Bottom of Burner Pan
ST667
Remove air shutter, turn upside down and replace.
Air Shutter Turned Upside Down
ST353a
injector orifice
replace
3/21/00 djt
90¡
Left Burner Leg
Injector Orifices
ST353a
Be sure injector orifices remain at 90° to the base.
6. Slide the catalyst through the grille opening. Set
catalyst on top of firebox. Secure with two (2) screws
and washers. (Fig. 15)
7. Shoulder bolts provided in catalyst kit must be in-
stalled on top of firebox. Use nut to secure in place.
(Fig. 15)
8. Install glass frame assembly by resting the bottom
edge of the frame on support brackets below the
front opening of the firebox. Rotate the top edge of
the assembly toward the firebox, and center it. Fas-
ten by “rotating” the cams over the top left and right
edges of the frame. (Fig. 16)
5. Replace rear, left and right log bracket assembly and
replace logs.
ST709
UVS pin
top install
1/29/02 djt
Shoulder
Bolts
ST709
Install shoulder bolts and set catalytic combustor in
place.
Catalytic Combustor
Shown with top
removed for clarification.
ST711
Rotate cams into place to hold glass frame assembly
in place.
Shown with top
removed for clarification.
ST709
UVS pin
top install
1/29/02 djt
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UVS27 Vent-Free Gas Heater
20007068
Check the Rating Plate attached by a steel cable to the
firebox, to confirm that you have the appropriate firebox
for the type of fuel to be used.
The appliance should have a main gas valve provided
in an accessible location for turning on or shutting off
the gas to the main burner.
Gas connection should be made in accordance with
current National Fuel Gas Code, ANSI Z223.1/NFPA
54. Since some municipalities have additional local
codes, be sure to consult you local authority.
Connect the gas supply and test for leaks. Use a 50/50
solution of liquid soap and water to test for leaks at gas
fittings and joints. NEVER test with an open flame.
Light the pilot according to the directions on Psage 17,
before going to the next step.
1. Remove the logs from their packaging, and inspect
each piece for damage.
2. Install the rear log by placing it on the sheet metal
shelf at the back of the firebox. (Fig. 17) The log
should touch the back wall of the firebox and be
centered.
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UVS27 Vent-Free Gas Heater
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LG224
UVS27
logs in place
1/30/02 djt
LG224
UVS27 logs in place.
LG223
UVS27
log placement
1/30/02 djt
LG223
Install rear, left and right logs.
Left Log Right Log
Rear Log
3. Install the right log by placing it on the sheet metal
bracket behind the grate with the right end of the log,
“the thicker end”, touching the grate and the right
side the firebox. Swing the left end of the log “paint-
ed end”, backward until it comes in contact with the
branch on the rear log. Set the log down over the
bent tab on the right. When the log is in place it rests
on the tab mentioned earlier and the tip of it comes
in contact with the branch on the rear log. (Fig. 17)
1. Install the screen frame by sliding the hooks over the
top front edge of the firebox and resting the bottom
on the support brackets. If the catalyst has been in-
stalled, place the glass front on the stove by resting
the bottom edge of the frame on support brackets
below the front opening of the firebox. Rotate the top
edge of the assembly toward the firebox, and center
it. Rotate the right and left cams towards the back of
the firebox to secure glass frame in place.
2. Grasp the front plate by the window bars and lift
into position engaging the two steel tabs behind the
adjacent bosses in the side plates. (Fig. 19) Seat the
front against the sides so the tabs at the bottom lip
engage with the notches in the stove legs.
the front tabs will engage behind the
notched cutouts in the base of either side plate. (Fig.
20)
When properly installed, the bottom of the front plate
cannot be pulled away form the sides without lifting it.
Be sure the control door can swing out. It
should close against the steel tab stop.
If installing the optional warming shelf, you may find it
easiest to attach it to the top plate before placing the
top in position on the stove. Follow the instructions sup-
plied with the kit.
ST112a
front plate install
fully assembled
1/04
Engage steel tabs
behind the cast
iron bosses
Control Door
Bottom Tabs engage
notch in the leg.
ST112b
Install the Front Plate. Your Front may look different
from that shown.
4. Install the left log by placing it on the sheet metal
bracket behind the grate with the left end of the log,
“the thicker end” touching the grate and the left end
of the firebox. Lay the log into the recessed area
on the left branch of the rear log. When the log is
in place, it will rest on the left branch of the rear log
toward the left side of the branch.
5. Loosely sprinkle the lava rocks directly on top of the
burner just behind decorative grate. (Fig. 18) Do not
place lava rocks toward back of burner. The lava
rock is shipped inside the bag assembly.
14
UVS27 Vent-Free Gas Heater
20007068
3. Lay the screen and top grille in place.
This completes assembly of the Stardance Freestand-
ing and Pinnacle Hearthmount shells.
ST113a
Hearthmount assy
4/20/99 djt
ST113a
Bottom Tabs engage notch
in the base.
Engage the Hearthmount Front with the notch in the
bse of each side plate.
ST114a
top install
12/18/03 djt
Grille
Levelling
Screws
ST114b
Install the Top Plate and Grille.
Screen
15
UVS27 Vent-Free Gas Heater
20007068
Read these instructions carefully and familiarize
yourself with the burner controls shown on Page 17.
Locate the pilot assembly, Figure 22. Follow the lighting
instructions on Page 16 exactly.
During the first fire, it is not unusual to smell some
odor associated with new logs, paint and metal being
heated. Odors should dissipate within the first eight to
ten hours, however, you can open a window to provide
fresh air to alleviate the condition.
Each time you light your heater check that the pilot
flame and burner flame patterns are as shown in Fig-
ures 25 and 26. If flame patterns are incorrect, turn the
heater off. Contact your dealer or a qualified gas techni-
cian for assistance. Do not operate the heater until the
pilot flame is correct.
Follow regular maintenance procedures as described
on Page 19.
ST673
RUVSOD
Pilot assembly location
7/249/01 djt
Natural
Pilot
LP Pilot
ST673
Pilot assembly location.
For units equipped with ‘HI/LO’ valves the flame adjust-
ment is accomplished by rotating the ‘HI/LO’ adjustment
knob located near the center of the gas control valve.
(Figs. 23, 24)
LO
HI
Turn
counterclockwise
to decrease
flame height
Turn clockwise
to increase
flame height
HV102
Honeywell hi/lo knob
4/5/99 djt
HV102
Flame adjustment knob for Honeywell Valve.
HI
OFF
PILOT
LO
HV117
Eurosit control
knob
2/19/02 djt
Turn
counterclockwise
to increase
flame height
Turn clockwise
to decrease
flame height
SIT 630
HV117
Flame adjustment knob for Eurosit Valve.
It is important to periodically perform a visual check of
the pilot and burner flames. Compare them to the picto-
rial illustrated below. (Figs. 25, 26) If the flame patterns
appear abnormal contact a qualified service provider for
service and adjustment.
ST198
Correct pilot flame appearance.
ST198
pilot flame detail
11/99
LG224
UVS27
logs in place
1/30/02 djt
LG225
Correct burner flame pattern.
16
UVS27 Vent-Free Gas Heater
20007068
3. Open control access panel.
4. Push in gas control knob slightly and turn clock-
wise to “OFF”. Do not force.
5. Close control access panel.
1. Read the safety information above.
2. Turn off all electrical power to the fireplace.
3. For MN/MP/TN/TP appliances ONLY, go on to
Step 4. For RN/RP appliances turn the On/Off
switch to “OFF” position or set thermostat to low-
est level.
4. Open control access panel.
5. Push in gas control knob slightly and turn clock-
wise to “OFF”.
10. Push the control knob all the way in and hold.
Immediately light the pilot by repeatedly depress-
ing the piezo spark ignitor until a flame appears.
Continue to hold the control knob in for about one
(1) minute after the pilot is lit. Release knob and it
will pop back up. Pilot should remain lit. If it goes
out, repeat steps 5 through 8.
• If you cannot reach your gas supplier, call the
Fire Department
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, do not try to repair it, call a
qualified service technician. Applying force or any
attempted repair may result in a fire or explosion.
D. Do not use this fireplace if any part has been under
water. Immediately call a qualified service techni-
cian to inspect the heater and to replace any part of
the control system and any gas control which has
been under water.
A. This heater has a pilot which must be lit manu-
ally. When lighting the pilot follow these
instructions exactly.
B. BEFORE LIGHTING smell all around the heater
area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will
settle on the floor.
• Do not try to light any fireplace
• Do not touch any electric switch
• Do not use any phone in your building
• Immediately call your gas supplier from a neigh-
bor’s phone. Follow the gas supplier’s instruc-
tions.
1. Turn the On/Off switch to Off position or set the
thermostat to lowest setting. (R Models only)
2. Turn off all electric power to the fireplace if serv-
ice is to be performed.
6. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you
smell gas, STOP! Follow “B” in the safety infor-
mation above. If you do not smell gas, go to the
next step.
7. Remove glass door before lighting pilot. (See
Glass Frame Removal section).
8. Visibly locate pilot by the main burner.
9. Turn knob on gas control counterclockwise
to “PILOT”.
• If knob does not pop up when released, stop
and immediately call your service technician or
gas supplier.
• If after several tries, the pilot will not stay lit,
turn the gas control knob to “OFF” and call your
service technician or gas supplier.
11. Replace glass door.
12. Turn gas control knob to “ON” position.
13. For RN/RP appliances turn the On/Off switch to
“ON” position or set thermostat to desired setting.
14. Turn on all electrical power to the fireplace.
PILOT
ON
OFF
ON
P
I
L
O
T
O
F
F
O
F
F
FP1067
lighting instruction
knobs
3/9/01 djt
5
4
3
2
1
O
F
F
P
i
l
o
t
3/8" - 1/2"
FP1068
Lighting instructions
Pilots
17
UVS27 Vent-Free Gas Heater
20007068
Follow these procedures in the order presented.
1. Ignition Electrode is disconnected
from ignition wire, broken or incor-
rectly positioned.
2. Ignitor wire is broken.
3. Bad Piezo Ignitor.
1. Inspect and re-connect, replace
or repair as necessary.
2. Replace wire.
3. Replace Piezo Ignitor.
1. Gas supply is turned off or supply
line shut-off valve is closed.
2. Control Knob is not in PILOT posi-
tion.
3. Control Knob not pressed in while
in PILOT position.
4. Air present in gas lines.
5. Inlet supply pressure is not within
correct settings.
6. Other conditions that should be
identified only by a qualified gas
technician.
1. Turn on gas supply or open sup-
ply line shut-off valve.
2. Turn Control Knob to PILOT.
3. Press Control Knob in while in
the PILOT position.
4. Continue holding in Control Knob
and repeat ignition procedure
until air is bled from the lines.
5. Call local gas supplier. Adjust
inlet supply pressure to specifica-
tion: NG; 5.5” w.c.-14.0”w.c. LP;
11.0” w.c.-14.0”w.c.
6. Call qualified gas technician.
PILOT
ON
OFF
PILOT
ADJ
L
O
H
I
HV104
Honeywell Valve
with pilot 2
7/9/99 djt
Piezo Ignitor
Regulator
Pilot / Main Control
HV104
Honeywell valve assembly.
18
UVS27 Vent-Free Gas Heater
20007068
1. Control Knob not fully depressed
or held in long enough.
2. Gas supply line shut-off valve is
not fully open.
3. Thermocouple connection is
loose at the Control Valve.
4. Pilot flame does not touch the
Thermocouple.
This can be caused by:
A) Incorrect gas pressure, and/or
B) other conditions that should
be identified only by a qualified
service technician.
5. Thermocouple is damaged.
6. Control Valve is damaged.
1. Depress Control Knob fully and
hold in for a full 30 seconds.
2. Fully open gas supply line shut-
off valve.
3. Inspect and tighten securely.
4. A) Call local gas supplier. Adjust
inlet supply pressure to specifica-
tion: NG; 5.5” w.c.-14.0”w.c. LP;
11.0” w.c.-14.0”w.c.
B)Call local gas service techni-
cian.
5. Call local gas service technician.
6. Call local gas service technician.
Correct LP Pilot Flame. Correct NG Pilot Flame.
1. Gas supply line shut-off valve is
not fully open.
2. Foreign material is blocking
Burner ports.
3. Main Burner orifice is clogged.
4. Thermostat or remote switch not
activated on JUVS.
5. Bad Thermopile.
1. Fully open gas supply line shut-
off valve.
2. Insptect and clear debris away
from Burner ports.
3. Call local gas service technician.
4. Set thermostat to higher tem-
perature or check remote switch.
5. Call local gas service technician.
1. Insufficient fresh air.
2. Incorrect inlet supply pressure.
1. Determine that adequate ventila-
tion exists to provide sufficient
fresh air. Open a window or pro-
vide additional ventilation. (See
Fresh Air Requirements, Pages
6-7)
2. Call local gas supplier. Adjust
inlet supply pressure to specifica-
tion: NG; 5.5” w.c.-14.0”w.c. LP;
11.0” w.c.-14.0”w.c.
ST121a
JUV
Pilot flame wrong 2
9/25/00 djt
Pilot flame is weak - does not touch
Thermocouple.
Pilot flame is lifting.
Thermopile
Thermo-
couple
ST121a
ST674
RUVSOD
Pilot flame 2
7/24/01 djt
19
UVS27 Vent-Free Gas Heater
20007068
The following procedures will help ensure that your
heater continues to perform safely and efficiently.
Follow the simple procedure outlined below.
Frequent cleaning may be necessary in living environ-
ments subject to excessive carpet lint or pet hair. For
example, if you live with a dog that sheds continuously,
you will need to inspect the burner area frequently and
clean it as often as the accumulation requires.
Turn the burner OFF and let the heater cool com-
pletely before cleaning.
Lift the Front plate up and then swing the bottom out
to disengage it from the heater shell. (Page 13, Fig.
19)
Remove the screen by lifting up and away from the
unit. Or, if so equipped, remove the glass panel by
rotating the two cams toward the front of the firebox.
Lift the panel up and off of the firebox frame. (Fig.
28)
Carefully inspect the log set for damage. Contact
your local dealer if any damage is evident.
Use a soft-bristled brush vacuum cleaner attachment
to remove dust or debris from the log set, pilot and
burner. Use care as the log set is fragile.
Inspect the catalytic combustor at the top of the
firebox. Replace the combustor if any damage or
deterioration is evident.
Replace the screen or glass panel and the front
plate.
If so equipped, do not operate this appliance with the
glass panel cracked, broken, or removed. Replace
damaged glass only with an approved MHSC ceramic
glass panel. Follow the Cleaning Procedure instructions
regarding parts removal.
An occasional dusting with a dry rag will help keep the
painted surfaces looking new. Use high-temperature
stove paints, available through your local dealer, to
touch-up areas as needed. Clean areas to be painted
with a wire brush and be sure to cover the log set,
burner and valve assembly. Apply the paint sparingly;
two light coats of paint will give better results than a
single heavy coat.
Porcelain enamel surfaces should be cleaned
with a soft, damp cloth. Do not use abrasive cleaning
agents. If necessary, use only a cleaning agent formu-
lated specifically for use on porcelain enamel surfaces.
ST712
UVS27
screen removal
1/02
Remove the screen or glass panel.
Screen Hooks
Glass Latch
ST712
20
UVS27 Vent-Free Gas Heater
20007068
The combustor should be cleaned annually to ensure
optimal performance. Follow the procedure below.
Be sure the heater is COLD.
Remove the screws and washers holding the com-
bustor in place. Lift combustor up and out.
1. Clean the outer surface of the filter with the brush
attachment of your vacuum cleaner to remove loose
dirt.
2. Submerge the filter in a mild soapy water solution.
Rinse thoroughly with
3. Replace in heater when dry.
Replace combustor on top of firebox.
Secure with screws and washers removed earlier.
Refer to Page 11, Figure 15.
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