Heat-N-Glo Pier-38HV, ST-38HV Installer's Manual

Models:

Pier-38HV
ST-38HV

WARNING: IF THE INFORMATION
IN THESE INSTRUCTIONS IS NOT
FOLLOWED EXACTLY, A FIRE OR
EXPLOSION MAY RESULT CAUS­ING PROPERTY DAMAGE, PER­SONAL INJURY, OR DEATH.

- Do not store or use gasoline or other flam­mable vapors and liquids in the vicinity of this
or any other appliance.

- What to do if you smell gas
 Do not try to light any appliance.
 Do not touch any electrical switch.
 Do not use any phone in your building.
 Immediately call your gas supplier from a

neighbor's phone. Follow the gas supplier's
instructions.

 If you cannot reach your gas supplier, call

the fire department.

- Installation and service must be performed by a
qualified installer, service agency, or the gas
supplier.

Installers Guide

Underwriters

Laboratories Listed

READ THIS MANUAL BEFORE INSTALLING OR
OPERATING THIS APPLIANCE. THIS INSTALLERS
GUIDE MUST BE LEFT WITH APPLIANCE FOR
FUTURE REFERENCE.

WARNING: IMPROPER INSTALLA­TION, ADJUSTMENT, ALTERATION,
SERVICE OR MAINTENANCE CAN
CAUSE INJURY OR PROPERTY DAM­AGE. REFER TO THIS MANUAL. FOR
ASSISTANCE OR ADDITIONAL INFOR­MATION CONSULT A QUALIFIED IN­STALLER, SERVICE AGENCY, OR THE
GAS SUPPLIER.

1. This appliance may be installed in an af­termarket, permanently located, manu­factured (mobile) home, where not pro­hibited by local codes.

2. This appliance is only for use with the type
of gas indicated on the rating plate. This
appliance is not convertible for use with
other gases, unless a certified kit is used.

Printed in U.S.A. Copyright 2001,

Heat-N-Glo, a division of Hearth Technologies Inc.
20802 Kensington Boulevard, Lakeville, MN 55044

This product is covered by one or more of the following patents: (United States) 4,112,913; 4,408,594; 4,422,426; 4,424,792; 4,520,791; 4,793,322;
4,852,548; 4,875,464; 5,000,162; 5,016,609; 5,076,254 5,191,877; 5,218,953; 5,328,356; 5,429,495; 5,452,708; 5,542,407; 5,613,487; (Australia)
543790; 586383; (Canada) 1,123,296; 1,297,746; 2,195,264; (Mexico) 97-0457; (New Zealand) 200265; or other U.S. and foreign patents pending.

Please contact your Heat-N-Glo dealer for any
questions or concerns. For the number of your
nearest Heat-N-Glo dealer, please call 952-985-6000.

285-900D 5/01

1

SAFETY AND WARNING INFORMATION

READ and UNDERSTAND all instructions carefully

!

before starting the installation. FAILURE TO
FOLLOW these installation instructions may result

in a possible fire hazard and will void the warranty.

Prior to the first firing of the fireplace, READ the

!

Using Your Fireplace section of the Owners Guide.

DO NOT USE this appliance if any part has been

!

under water. Immediately CALL a qualified service
technician to inspect the unit and to replace any part
of the control system and any gas control which has
been under water.

THIS UNIT IS NOT FOR USE WITH SOLID FUEL.

!

Installation and repair should be PERFORMED by a
qualified service person. The appliance and venting

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system should be INSPECTED before initial use
and at least annually by a professional service
person. More frequent cleaning may be required
due to excessive lint from carpeting, bedding
material, etc. It is IMPERATIVE that the units
control compartment, burners, and circulating air
passageways BE KEPT CLEAN to provide for
adequate combustion and ventilation air.

These units MUST use one of the vent systems

!

described in the Installing the Fireplace section of
the Installers Guide. NO OTHER vent systems or
components MAY BE USED.

This gas fireplace and vent assembly MUST be

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vented directly to the outside and MUST NEVER be
attached to a chimney serving a separate solid fuel
burning appliance. Each gas appliance MUST USE
a separate vent system. Common vent systems are

PROHIBITED.

INSPECT the external vent cap on a regular basis to

!

make sure that no debris is interfering with the air
flow.

The glass door assembly MUST be in place and

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sealed, and the trim door assembly MUST be in
place on the fireplace before the unit can be placed
into safe operation.

DO NOT OPERATE this appliance with the glass

!

door removed, cracked, or broken. Replacement of
the glass door should be performed by a licensed
or qualified service person. DO NOT strike or slam
the glass door.

Always KEEP the appliance clear and free from

!

combustible materials, gasoline, and other
flammable vapors and liquids.

NEVER OBSTRUCT the flow of combustion and

!

ventilation air. Keep the front of the appliance
CLEAR of all obstacles and materials for servicing
and proper operations.

Due to the high temperature, the appliance should
be LOCATED out of traffic areas and away from

!

furniture and draperies. Clothing or flammable
material SHOULD NOT BE PLACED on or near the
appliance.

Children and adults should be ALERTED to the

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hazards of high surface temperature and should
STAY AWAY to avoid burns or clothing ignition.
Young children should be CAREFULLY SUPERVISED
when they are in the same room as the appliance.

The glass door assembly SHALL ONLY be

!

replaced as a complete unit, as supplied by the gas
fireplace manufacturer. NO SUBSTITUTE material
may be used.

DO NOT USE abrasive cleaners on the glass door

!

assembly. DO NOT ATTEMPT to clean the glass
door when it is hot.

Turn off the gas before servicing this appliance. It is

!

recommended that a qualified service technician
perform an appliance check-up at the beginning of
each heating season.

Any safety screen or guard removed for servicing

!

must be replaced before operating this appliance.

DO NOT place furniture or any other combustible

!

household objects within 36 inches of the fireplace
front.

2

Table of Contents

Safety and Warning Information ..................................... 2

Service Parts Lists .......................................................... 4

u

Section 1: Approvals and Codes .................................... 8

Appliance Certification........................................................ 8

Installation Codes ............................................................... 8

High Altitude Installations .................................................... 8

Section 2: Getting Started .............................................. 9

Introducing the Heat-N-Glo Gas Fireplaces ....................... 9

Pre-installation Preparation ................................................ 9

Section 3: Installing the Fireplace ............................... 12

Constructing the Fireplace Chase ................................... 12

Step 1 Locating the Fireplace ....................................... 12

Step 2 Framing the Fireplace ....................................... 13

u

Step 3 Installing the Vent System ................................. 15

A. Vent System Approvals ................................ 15

u

B. Installing Vent Components ......................... 22

C. Vent Termination .......................................... 25

Step 4 Positioning, Leveling, and

Securing the Fireplace ...................................... 28

Step 5 The Gas Control Systems ................................. 28

Step 6 The Gas Supply Line ......................................... 29

Step 7 Gas Pressure Requirements ............................ 29

Step 8 Wiring the Fireplace .......................................... 30

Step 9 Finishing ............................................................ 31

Step 10 Installing Trim, Logs, and Ember Material ......... 32

Installing the Trim .............................................. 32

Positioning the Logs ..........................................32

Placing the Ember Material ............................... 32

Glass Specifications .......................................... 33

Step 11 Before Lighting the Fireplace .............................33

Step 12 Lighting the Fireplace ........................................33

After the Installation .......................................................... 33

Section 4: Maintaining and Servicing

u = Contains updated information.

Your Fireplace ............................................. 34

3

1

Approvals and Codes

Appliance Certification

The Heat-N-Glo fireplace models discussed in this Installers
Guide have been tested to certification standards and listed

by the applicable laboratories.

Certification

MODEL: PIER-38HV, ST-38HV
LABORATORY: Underwriters Laboratories
TYPE: Direct Vent Gas Fireplace
STANDARD: ANSI Z21.50CGA2.22UL307B

Installation Codes

The fireplace installation must conform to local codes. Before
installing the fireplace, consult the local building code
agency to ensure that you are in compliance with all
applicable codes, including permits and inspections.

In the absence of local codes, the fireplace installation must
conform to the National Fuel Gas Code ANSI Z223.1 (in
the United States) or the CAN/CGA-B149 Installation Codes
(in Canada). The appliance must be electrically grounded
in accordance with local codes or, in the absence of local
codes with the National Electric Code ANSI/NFPA No. 70
(in the United States), or to the CSA C22.1 Canadian Electric
Code (in Canada).

High Altitude Installations

U.L. Listed gas fireplaces are tested and approved for
elevations from 0 to 2,000 feet in the U.S.A. and from 0 to
4,500 feet in Canada.

When installing this fireplace at an elevation above 2,000
feet (in the United States), it may be necessary to decrease
the input rating by changing the existing burner orifice to a
smaller size. Input should be reduced four percent (4%) for
each 1,000 feet above sea level, unless the heating value of
the gas has been reduced, in which case this general rule
will not apply.

When installing this fireplace at an elevation between 2,000
and 4,500 feet (in Canada), the input rating must be reduced
by ten percent (10%).

When installing this fireplace at an elevation above 4,500
feet (in Canada), check with local authorities.

Consult your local gas utility for assistance in determining
the proper orifice for your location.

These models may be installed in a bedroom or bed-sitting
room in the U.S.A. and Canada.

Heat-N-Glo Quality
Systems registered
by SGS ICS

8

2

Getting Started

Introducing the Heat-N-Glo Gas Fireplaces

Heat-N-Glo direct vent gas fireplaces are designed to oper­ate with all combustion air siphoned from outside of the
building and all exhaust gases expelled to the outside.

The information contained in this Installers Guide, unless
noted otherwise, applies to all models and gas control
systems. Gas fireplace diagrams, including the dimensions,
are shown in this section.

Pre-install Preparation

This gas fireplace and its components are tested and safe
when installed in accordance with this Installers Guide.
Report to your dealer any parts damaged in shipment,
particularly the condition of the glass. Do not install any

unit with damaged, incomplete, or substitute parts.

The vent system components are shipped in separate
packages. The gas logs are packaged separately and must
be field installed.

Read all of the instructions before starting the
installation. Follow these instructions carefully during
the installation to ensure maximum safety and benefit.
Failure to follow these instructions will void the
owners warranty and may present a fire hazard.

Warranty

The Heat-N-Glo Warranty will be voided by, and Heat-N-Glo
disclaims any responsibility for, the following actions:

 Installation of any damaged fireplace or vent system com-

ponent.

 Modification of the fireplace or direct vent system.

 Installation other than as instructed by Heat-N-Glo.

 Improper positioning of the gas logs or the glass door.

 Installation and/or use of any component part not manu-

factured and approved by Heat-N-Glo, not withstanding
any independent testing laboratory or other party approval
of such component part or accessory.

ANY SUCH ACTION MAY POSSIBLY CAUSE A FIRE
HAZARD.

When planning a fireplace installation, its necessary to
determine:

 Where the unit is to be installed.

 The vent system configuration to be used.

 Gas supply piping.

 Electrical wiring.

 Framing and finishing details.

 Whether optional accessories  devices such as a fan,

wall switch, or remote control  are desired.

If the fireplace is to be installed on carpeting or tile, or on
any combustible material other than wood flooring, the
fireplace must be installed on a metal or wood panel that
extends the full width and depth of the fireplace.

9

Ø

6 5/8

(168mm)

11 5/ 16

(287mm)

25 7/8

(657mm)

VENT COLLAR

38 5/8

(981mm)

31 3/16

(792mm)

36 1/16

(915mm)

TOP STANDOFFS

TOP

GRILL

SIDE

GLASS

DOOR

28 3/16

(716mm)

35 3/16

(894mm)

2

(52mm)

3 3/8

(85mm)

ELECTRICAL

ACCESS

GAS LINE

ACCESS

22 11/16

(576mm)

VENT COLLAR

2

(52mm)

3 1/16

(79mm)

ELECTRICAL

ACCESS

GAS LINE

ACCESS

Figure 1. Diagram of the PIER-38HV

END GLASS

DOOR

BOTTOM

GRILL

GAS CONTROLS

& LABELS

10

Ø6 5/8

(168mm)

11 5/16

(287mm)

25 7/8

(657mm)

VENT COLLAR

38 5/8

(981mm)

35 3/16

(894mm)

31 3/16 (792mm)

38 1/4 (972mm)

TOP STANDOFFS

TOP

GRILL

29 1/8

(739mm)

(52mm)

3 3/8

(85mm)

ELECTRICAL

ACCESS

GAS LINE

2

ACCESS

22 11/16

(576mm)

3 1/16

(79mm)

VENT COLLAR

2

(52MM)

ELECTRICAL

ACCESS

Figure 2. Diagram of the ST-38HV

GAS LINE

ACCESS

GLASS

DOOR

BOTTOM

GRILL

GAS CONTROLS

& LABELS

11

3

Installing the Fireplace

36”

PIER-38HV

Constructing the Fireplace Chase

A chase is a vertical box-like structure built to enclose the
gas fireplace and/or its vent system. Vertical vents that run
on the outside of a building may be, but are not required to
be, installed inside a chase.

CAUTION: TREATMENT OF FIRESTOP SPACERS AND
CONSTRUCTION OF THE CHASE MAY VARY WITH THE
TYPE OF BUILDING. THESE INSTRUCTIONS ARE NOT
SUBSTITUTES FOR THE REQUIREMENTS OF LOCAL
BUILDING CODES. THEREFORE, YOUR LOCAL BUILD­ING CODES MUST BE CHECKED TO DETERMINE THE
REQUIREMENTS FOR THESE STEPS.

Factory-built fireplace chases should be constructed in the
manner of all outside walls of the home to prevent cold air
drafting problems. The chase should not break the outside
building envelope in any manner.

This means that the walls, ceiling, base plate and cantilever
floor of the chase should be insulated. Vapor and air infiltra­tion barriers should be installed in the chase as per regional
codes for the rest of the home. Additionally, Heat-N-Glo rec­ommends that the inside surfaces be sheetrocked and taped
for maximum air tightness.

To further prevent drafts, the firestops should be caulked to
seal gaps. Gas line holes and other openings should be
caulked or stuffed with insulation. If the unit is being in­stalled on a cement slab, we recommend that a layer of
plywood be placed underneath to prevent conducting cold
up into the room. Be sure to include spark arrestors for
woodburning units if they are required.

36”

36”

ST-38HV

36”

Figure 3. Fireplace Dimensions, Locations,
and Space Requirements

Minimum Clearances from the Fireplace to

Combustible Materials

Inches mm

Glass Sides or Ends.......... 3 6 ................. 91 4

Floor....................................... 0 .................... 0

Rear Vent............................... 0 .................... 0

Metal Sides or Ends ............ 0 .................... 0

Top ....................................... 3 1/2 ...............8 9

Ceiling*................................. 3 6 ................. 91 4

*The clearance to the ceiling is measured from the top
of the unit, excluding the stand-offs (see Figure 34).

THE CHASE SHOULD BE CONSTRUCTED SO THAT ALL
CLEARANCES TO THE FIREPLACE ARE MAINTAINED
AS SPECIFIED WITHIN THIS INSTALLERS GUIDE.

Step 1. Locating the Fireplace

Space and clearance requirements for locating a fireplace
within a room (see Figure 3).

Clearance Requirements

The top, back, and sides of the fireplace are defined by
stand-offs. The minimum clearance to a perpendicular wall
extending past the face of the fireplace is one inch (25mm).
The metal ends of the fireplace may NOT be recessed into
combustible construction.

Minimum Clearances from the Vent Pipe to

Combustible Materials

Inches mm

Vertical Sections. ............. 1 ................... 2 5

Horizontal Sections

Top ......................................... 3 ................... 75

Bottom .................................. 1 ................... 25

Sides..................................... 1 ................... 25

At Wall Firestops

Top ...................................... 2 1/2 ...............6 4

Bottom ................................. 1/2 ................. 1 3

Sides..................................... 1 ................... 2 5

For minimum clearances of direct vent termination (see Fig­ures 25 and 26).

12

Step 2. Framing the Fireplace

Fireplace framing can be built before or after the fireplace is
set in place. Framing should be positioned to accommo­date wall coverings and fireplace facing material. The dia­gram below shows framing reference dimensions.

CAUTION: MEASURE FIREPLACE DIMENSIONS AND
VERIFY FRAMING METHODS AND WALL COVERING
DETAILS BEFORE FRAMING.

WARNING: FRAMING DIMENSIONS ASSUME

!

USE OF 1/2 INCH THICK WALL COVERING
MATERIALS ON EXTERIOR OF FRAMING ONLY
AND NO SHEET ROCK ON INTERIOR OF FRAMING.

Shows center of 10 x 10 vent framing holes.

The center of the hole is 1 inch (25.4mm)
above the center of the horizontal vent pipe.

37 1/8

(943mm)

Framing should be constructed
of 2 X 4 lumber or heavier.

*NOTE:
Review details of Figure 5 BEFORE
constructing framing. The dimen­sions in Figure 4 do not include po­sitions of venting and firestops.

*35 7/8 (911mm)

1/2 SHEET ROCK

35 3/4

(908mm)

5/8 SHEETROCK

38 1/2

(978mm)

38 3/4

(984mm)

21 11/16

(551mm)

1/2 SHEET ROCK

21 7/16

(545mm)

5/8 SHEET ROCK

38 3/4

(984mm)

21 11/16

(551mm)

1/2 SHEET ROCK

21 7/16

(545mm)

5/8 SHEET ROCK

Figure 4. Framing Dimensions*

13