Heat & Glo PRIMO Series User manual

1
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
PRIMO Passive Heat PowerFlow™ Heat Management System
Passive Heat - Front Discharge: PHFR-PRIMO-48, PHFR-PRIMO-60
Passive Heat - Side Discharge or Open Top Discharge: PHSI-PRIMO
Models: PRIMO48, PRIMO48ST, PRIMO60, PRIMO60ST
Installation Instructions
Leave this manual with party responsible for use
and operation.
CAUTION! Risk of Cuts, Abrasions or Flying Debris.
Wear protective gloves and safety glasses during instal-
lation. Sheet metal edges are sharp.
DANGER
HOT GLASS WILL
CAUSE BURNS.
DO NOT TOUCH GLASS
UNTIL COOLED.
NEVER ALLOW CHILDREN
TO TOUCH GLASS.
A barrier designed to reduce the risk of
burns from the hot viewing glass is provided
with this appliance and shall be installed for
the protection of children and other at-risk
individuals.
CAUTION! Do not install damaged components.
This appliance comes standard with patented
SafeSurfaceTM Glass which keeps the surface temperature
of the barrier glass at a safe level and will still be hot to
the touch when operated for long periods of time.
If the barrier glass is removed, the inner glass temperature
will be very hot and cause burns.
WARNING! Risk of Fire!
• Combustible materials MUST NOT overlap or be placed
behind a decorative front.
• DO NOT apply combustible materials beyond the
minimum clearances. Comply with all minimum
clearances to combustibles as specied. Overlapping
materials could ignite and will interfere with proper
operation of decorative fronts.
If any parts are missing or damaged, contact your dealer before
starting installation. DO NOT install a damaged kit.
Table of Contents
1. Introduction ....................................2
2. Kit Contents....................................3
3. Preparation ....................................5
4. Framing ......................................6
5. Remove Barrier Glass/Bypass Limit Switch and
Glass Mounting Brackets .........................9
6. Installation and Finishing - Front Discharge ..........14
7. Installation and Finishing - Side Discharge ...........20
8. Installation and Finishing - Open Top Discharge .......24
9. Wiring Requirements............................31
10. Maintenance ..................................33

2Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
1. Introduction
The PRIMO Passive Heat PowerFlow™ Heat Manage-
ment System conveys warm air from the replace into the
same room in one of three ways:
• A front discharge slot (PHFR-PRIMO-48 or PHFR-
PRIMO-60).
• Two discharge heat registers positioned on the side of
the appliance (PHSI-PRIMO).
• As an open top chase (PHSI-PRIMO).
Installation of the PRIMO Passive Heat kit must be done
in conjunction with the appliance installation.
Installation of this kit MUST be performed by a qualied
service technician.
PRIMO Passive Heat PowerFlow™ Heat Management
System is approved for use with these models only:
PRIMO48
PRIMO48ST
PRIMO60
PRIMO60ST
NOTICE: The PRIMO must be installed using the Clean
Face Finishing option. PRIMO Passive Heat PowerFlow™
Heat Management System is not compatible with Primo
Granite Surround Finish.
WARNING! Risk of Fire! DO NOT install the PRIMO
Passive Heat with models that are not approved. Over-
heating will occur.
The PRIMO Passive Heat Trim Kit (PHTRIM-PRIMO-48
or PHTRIM-PRIMO-60) is also required with the Front
Discharge Passive Heat PowerFlow™ Heat Management
System (PHFR-PRIMO-48 or PHFR-PRIMO-60) and must
be purchased separately. Follow instructions included with
the trim kit to nish the PRIMO Passive Heat PowerFlow™
Heat Management System.
The PRIMO Passive Heat kit is tested and safe when
installed in accordance with this installation manual. It is
your responsibility to read all instructions before starting
installation and to follow these instructions carefully during
installation.
The PRIMO Passive Heat kit is carefully engineered and
must be installed only as specied. If you modify it or any
of its components you will void the warranty, and you may
possibly cause a re hazard. Installation must be done
according to applicable local, state, provincial, and/or
national codes.

3
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 2.1 Front Discharge Passive Heat Kit Components
FRONT DISCHARGE KIT (PHFR-PRIMO-48/PHFR-PRIMO-60)
DESCRIPTION SERVICE PART NO. QTY
Plenum- PHFR-PRIMO-48 2560-107 2
Plenum- PHFR-PRIMO-60 2560-108* 2
Collar SRV659-125 4
Flex Air Duct (6” Diameter x 25 ft.) 659-200 1
Gear Clamp: Large SRV662-803 4
Hurricane Screw
2005-861 14
Replacement part:
2005-861/25 1
Glass Mounting Bracket 2560-134 2
Rubber Bumper 2310-140 4
2 Inch Jumper Wire 2012-206 1
Finishing Trim 2560-114 1
Self-Tapping #8 Screw Service part not available 4
659-200 6 Inch Round Duct SRV659-125 Collar
SRV662-803
Gear Clamp: Large
2005-861
Hurricane Screw
2560-107 (PRIMO48 / PRIMO48ST)
Contents of Front Discharge Passive Heat Kit PHFR-PRIMO-48, PHFR-PRIMO-60
*NOTE: 2560-108 (PRIMO60 / PRIMO60ST) is
visually similar to 2560-107 and slightly larger.
2. Kit Contents
Verify and remove contents from packaging before
beginning installation. See Figure 2.1 (Front Discharge)
or Figure 2.2 (Side Discharge).
Note: The exible duct used with the PRIMO passive heat
is manufactured and marked to the requirements of UL-
181, Class I air duct.
2560-134 Glass Mounting Bracket
2560-114 Finishing Trim
2310-140 Rubber Bumper
2012-206 2 Inch Jumper Wire
Self-Tapping #8 Screw

4Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
659-200 6 Inch Round Duct
SRV659-125
Collar
Figure 2.2 Side Discharge Passive Heat Kit Components
2005-861
Hurricane Screw
2560-120
12 in. x 8 in. Register Cover
(Screws Included)
Contents of Side Discharge/Open Top Discharge Passive Heat Kit PHSI-PRIMO
2560-015
Side Discharge Assembly
2560-134
Glass Mounting Bracket
2310-140
Rubber Bumper
Self-Tapping #8 Screw
Wood Screw
OPEN TOP DISCHARGE SPECIFIC ITEMS
DESCRIPTION SERVICE PART NO. QTY
Heat Shield 2560-116 4
Mounting Bracket 2560-115 8
Wood Screw Service part not available 12
Self-Tapping #8 Screw Service part not available 12
2560-116
Heat Shield
2560-115
Mounting Bracket
SIDE DISCHARGE / OPEN TOP DISCHARGE KITS (PHSI-PRIMO)
DESCRIPTION SERVICE PART NO. QTY
12 in. X 8 in. Register Cover 2560-120 2
Side Discharge Assembly 2560-015 2
Collar SRV659-125 2
Flex Air Duct (6” Diameter x 25 ft.) 659-200 1
Gear Clamp: Large SRV662-803 4
Hurricane Screw
2005-861 8
Replacement part:
2005-861/25 1
Glass Mounting Bracket 2560-134 2
Rubber Bumper 2310-140 4
2 Inch Jumper Wire 2012-206 1
Self-Tapping #8 Screw Service part not available 4
2012-206 2 Inch Jumper Wire
Self-Tapping #8 Screw
SRV662-803
Gear Clamp: Large

5
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
AIR DUCT LENGTH
Measurements in Inches
FRONT SIDE
SIZE MIN. MAX.* MIN. MAX.*
48 45 150 48 150
60 51 150 54 150
*Additional ex duct required for runs longer than
150 inches. Contact dealer to order.
CLEARANCE TO FLEXIBLE DUCT
Measurements in Inches
SIZE FRONT SIDE
48 1 1
60 1 1
Table 3.1 Air Duct Length & Clearances
Figure 3.1 Side Discharge - Maintain Pitch
3. Preparation
Plan the location of the appliance and the warm air duct
runs. See Table 3.1.
WARNING! Risk of Fire! DO NOT fold/kink/pinch/ob-
struct 6 inch exible ducts. Appliance could overheat.
Passive Heat- Side Discharge (PHSI) Only:
If installing a passive heat kit with side discharge, the ex
duct must maintain a minimum 12/12 pitch with no more
than 2 feet of horizontal run. See Figure 3.1.
Y
24 IN. MAX.
HORIZONTAL
MAINTAIN
MINIMUM
12/12 PITCH
HOSE CLAMP
X
TOP OF SIDE DISCHARGE ASSEMBLY
Determine whether front, side, or open top discharge is
to be installed and follow instructions for the appropriate
application.
PITCH (In Inches)
X
Y Min.
PRIMO48
PRIMO48ST
Y Min.
PRIMO60
PRIMO60ST
0 60-1/16 66-1/16
12 72-1/16 78-1/16
24 84-1/16 90-1/16
Power Vent Recommendation
Hearth & Home Technologies recommends the PVLP-SLP
power vent option for use with the Passive Heat Kit. If the
application does not allow for the PVLP-SLP to be used, the
PVI-SLP-B may be used. The PVI-SLP-B must be mounted
outside the chase due to the higher noise level created.

6Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
4. Framing
Figure 4.1 Clearances to Combustibles-PRIMO48, PRIMO60 with Passive Heat Side Discharge or Front Discharge
C
B
A
D
E
C
D
E
A
B
F
F
Passive Heat Front Discharge
(PHFR-PRIMO-48 / PHFR-PRIMO-60)
Single-Sided or See-Through
Passive Heat Side Discharge (PHSI-PRIMO)
Single-Sided or See-Through
MINIMUM FRAMING DIMENSIONS
SIDE DISCHARGE
A B C D E
Height of
Discharge
Opening
Width of
Discharge
Opening
Clearance
Opening to
Framing
Clearance
Opening to
Ceiling
Clearance
Bottom of Appliance
to Ceiling
PRIMO48
PRIMO48ST
Inches 16 10-3/16 56-9/16 60-1/16 83-7/8
millimeters 406 259 1437 1526 2130
PRIMO60
PRIMO60ST
Inches 16 10-3/16 62-9/16 66-1/16 89-7/8
millimeters 406 259 1589 1678 2283
MINIMUM FRAMING DIMENSIONS
FRONT DISCHARGE
A B C D E F
Height of
Discharge
Opening
Width of
Discharge
Opening
Clearance
Opening to
Framing
Clearance
Opening to
Ceiling
Clearance
Bottom of Appliance
to Ceiling
Framing
PRIMO48
PRIMO48ST
Inches 6 50-7/8 58-9/16 60-1/16 83-7/8
16 inches
on center
millimeters 152 1292 1488 1526 2130
PRIMO60
PRIMO60ST
Inches 6 62-3/4 64-9/16 66-1/16 89-7/8
millimeters 152 1594 1640 1678 2283
Clearances to Combustibles Clearances to Combustibles

7
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Clearances to Combustibles - Passive Heat Open Top Discharge (PHSI-PRIMO)
Single-Sided or See-Through
B
A
C
D
E
CEILING
Figure 4.2 Clearances to Combustibles-PRIMO48, PRIMO60 with Passive Heat Open Top Discharge
MINIMUM FRAMING DIMENSIONS
A B C D
Width of
Opening
Clearance
Opening
to Top of
Chase
Clearance
Opening to
Ceiling
Clearance
Bottom of Appliance
to Ceiling
PRIMO48
PRIMO48ST
Inches 10-3/16 58-1/16 60-1/16 83-7/8
millimeters 259 1475 1526 2130
PRIMO60
PRIMO60ST
Inches 10-3/16 64-1/16 66-1/16 89-7/8
millimeters 259 1627 1678 2283
REQUIRED FRAMING DIMENSION
WARNING! Risk of Fire! Maintain framing dimension as required.
• Opening greater than 2 inches: Debris or other material could
enter the chase and cause re. Mesh screen required on top
of framing.
• Opening less than 2 inches: Appliance and combustible materials
will overheat.
E
Required Top of Header to Ceiling
(Discharge Opening)
PRIMO48 / PRIMO48ST
PRIMO60 / PRIMO60ST
MIN
Inches 2
millimeters 51
WARNING! Risk of Fire! Minimum
dimension of discharge opening MUST
be 2 inches! Appliance and combustible
materials will overheat.

8Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 4.3 Passive Heat Open Top Discharge Conguration Options
Chase Congurations Passive Heat Open Top Discharge (Single-Sided or See-Through)
SINGLE-SIDED APPLIANCE SEE-THROUGH APPLIANCE
BACK
SIDE
2 IN. MIN.
FRONT
SIDE
FRONT
FRONT
SIDE SIDE
CEILING
CEILING
REAR SUPPORT
STUD
2 IN. MIN.
Figure 4.3 shows the acceptable congurations for Open
Top Discharge.
For a See-Through appliance, two options are available:
Option 1: Both “Front” sides are open top conguration.
Option 2: One “Front” side is open top conguration.
For See-Through models, sides are not required to be
open, but at least one front side of the chase MUST be
open and unobstructed.
WARNING! Risk of Fire! Comply with Open Top Dis-
charge congurations as specied. Reduced discharge
area will interfere with proper operation of the heat man-
agement system. Overheating of appliance and combus-
tible materials will occur.
Open Top Discharge Conguration
1. Dimensions for framing using the Open Top Discharge
method of installation are shown in Figure 4.2.
WARNING! Risk of Fire! Mesh screen required on top
of framing when discharge opening is greater than two
inches.
Open Top Discharge - Clearances to Combustibles
2. If Dimension E in Figure 4.2 is greater than two
inches, a piece of mesh screen with 1/2 inch x 1/2
inch opening MUST be installed on the top of the
framing above the appliance.
The screen will prevent objects from falling through
the opening and onto the top of the appliance,
causing a re. The mesh screen may be available at
a hardware or home improvement retailer.
For a Single-Sided appliance, the front and both sides
of the chase MUST be open and unobstructed. A rear
support stud may be installed along the back wall to ensure
secure mounting of the discharge assembly.
WARNING! Risk of Fire! Minimum dimension of opening MUST be 2 inches! Appliance and combustible materials
will overheat.
WARNING! Risk of Fire! DO NOT block discharge opening! DO NOT install nishing material on top plate framing!

9
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 5.3 Remove Bottom Panel
WARNING! Choking Hazard! Keep media and stones
out of reach of children.
6. Remove transition media tray.
7. Remove LED Tray assembly
8. Remove glass mounting brackets, if installed. See
Figure 5.2.
9. Remove bottom panel to access component tray as
shown in Figure 5.3.
10. Disconnect the two wires attached to the limit switch.
See Figure 5.4.
5. Remove media from the front media tray. Remove
refractory pieces, if installed.
Figure 5.2 Remove Existing Glass Mounting Brackets (If Installed)
1. Press glass suction cups rmly against glass to create
a solid hold.
2. Slide glass straight up behind nishing material. See
Figure 5.1, Detail A.
3. Tilt bottom out as shown in Figure 5.1, Detail B. Slide
glass down to remove it from the appliance.
4. Set glass on prepared work surface.
Figure 5.1 Barrier Glass - Clean Face Finish
UP
TILT OUT
THIS SIDE OUT
THIS SIDE OUT
DETAIL A
DETAIL B
Barrier Glass Weights
PRIMO48 PRIMO60
12 lbs 14 lbs
WARNING! Risk of Injury! Glass is heavy.
• Glass assembly installation and removal must be
performed by a qualied service technician. See Table
5.1 below for glass assembly weights.
• Use suction cups to handle glass.
• PRIMO60 Models: It is recommended that Glass
installation and removal be performed by two qualied
service technicians.
• Wear protective gloves and safety glasses during removal
and installation.
5. Remove Barrier Glass/Bypass Limit
Switch and Glass Mounting Brackets
Note: For See-Through appliances remove only the
glass on the control cavity side of the appliance.
Table 5.1

10 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 5.4 Disconnect Limit Switch Wires and Remove Bracket
WIRES
DISCONNECTED
FROM SWITCH
Figure 5.5 Jumper Wire Installed
Note: Because Passive Heat does not require a heat
management fan to operate, the limit switch is not required
during operation.
WARNING! Risk of Fire! DO NOT block discharge
openings. Follow framing dimensions as instructed.
Overheating of appliance and combustible materials will
occur!
11. Install jumper wire between the disconnected wires
from Step 10. See Figure 5.5.

11
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
12. Install the supplied glass mounting brackets. If the
appliance is a See-Through model, glass mounting
brackets will need to be installed on both sides of
the appliance. The glass mounting brackets includ-
ed in this kit replace those shipped with the Clean
Face Finishing Kit. Discard glass mounting brackets
shipped with Clean Face Finishing Kit.
Figure 5.6 Glass Mounting Bracket
Figure 5.7 Break Glass Mounting Bracket
Figure 5.8 Form Glass Mounting Bracket
BREAK LINE
HAND BEND AT 90 DEGREES
13. Break the glass mounting bracket into two pieces
as shown in Figures 5.6, 5.7 and 5.8. Make the
hand bends as shown in Figure 5.8 to form the glass
mounting brackets.
14. Install glass mounting brackets on bottom left and right
sides using an existing screw, a self-tapping screw, and
shoulder bolt. See Figure 5.9. Install rubber bumpers
as shown to protect the barrier glass.
GLASS MOUNTING BRACKET
Figure 5.9 Install Glass Mounting Brackets
SELF-TAPPING SCREW LOCATION
ATTACH RUBBER BUMPERS
GLASS MOUNTING BRACKET
EXISTING SCREW LOCATION
RUBBER BUMPER
SHOULDER BOLT SLOT

12 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 5.10 Reinstall the LED Tray
Figure 5.11 Reinstall the Transition Media Tray
Figure 5.12 Reinstall Media
15. Reinstall the LED tray as shown in Figure 5.10.
16. Set transition media tray into position as shown in
Figure 5.11. The return bends are at the bottom of
the tray. The rear return bend should be positioned in
between the glass frame and the glass frame bracket.
Ensure tray is positioned ush with appliance opening.
17. Reinstall transition glass panels and transition glass
tab.
18. Reinstall media on transition media tray. See Figure 5.12.
WARNING! Choking Hazard! Keep media out of reach
of children.

13
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
19. Reinstall barrier glass as instructed below.
Replace Barrier Glass
1. Press glass suction cups rmly against glass to create
a solid hold.
2. Tilt glass and slide glass between nishing material
and barrier glass tabs. See Figure 5.13.
3. Center the barrier glass left to right.
4. Tilt bottom in toward appliance. Set glass down into
position on rubber bumpers.
WARNING! Risk of Fire!
• Vertical gap 5/8 inch required for proper airow.
• Install barrier glass as instructed. Overheating will occur.
Barrier glass must be installed between the nishing
material and the barrier glass tabs. If not installed
correctly, appliance will not operate as intended. See
Figure 5.13.
Figure 5.13 Replace Barrier Glass
BARRIER GLASS TABS
THIS SIDE OUT
NOTE: INSTALL BARRIER
GLASS PRINTED SIDE
OUT.“THIS SIDE OUT”
MUST BE LEGIBLE ON
BARRIER GLASS.
5/8 IN. VERTICAL
GAP REQUIRED
When barrier glass is installed, a vertical gap of approxi-
mately 5/8 inch is formed between the bottom of the glass
and the transition media tray. This gap allows adequate
air ow through the appliance. See Figure 5.13.

14 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
1. Remove the two outer passive heat seal plates. See
Figure 6.1 and 6.2. Install collars over the openings
using hurricane screws provided in the kit.
WARNING! Risk of Fire! DO NOT remove HEAT-OUT-
PRIMO seal plates unless HEAT-OUT-PRIMO is installed.
Appliance will overheat. See HEAT-OUT-PRIMO installa-
tion instructions.
6. Installation and Finishing - Front Discharge
Install Plenums and Flexible Duct
Figure 6.1 PRIMO Passive Heat Front Discharge Configuration / Remove PRIMO Passive Heat Seal Plates
PASSIVE-HEAT-PRIMO Collar PASSIVE-HEAT-PRIMO Collar
PASSIVE-HEAT-PRIMO
(Front Discharge*)
*The Front Discharge option, Side Discharge option or Open Top Chase option
may be installed. Installing more than one option is not allowed.
DO NOT
REMOVE
KNOCKOUTS
PASSIVE HEAT PRIMO COLLAR LOCATION
LEFT AND RIGHT SIDES
SQUARE
VENT
PIPE GASKET
HEAT-OUT-PRIMO
SEAL PLATES
Figure 6.2 Remove PRIMO Passive Heat Seal Plates
WARNING! Risk of Fire! DO NOT remove HEAT-
OUT-PRIMO seal plates unless HEAT-OUT-PRIMO
is installed. Appliance and combustible materials will
overheat.

15
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 6.2 Remove PRIMO Passive Heat Seal Plates
2. Locate the nishing trim piece and break at the two
places noted in Figure 6.3. Bend as indicated in Fig-
ure 6.4, Detail A, B, and C.
BREAK HERE
BREAK HERE
BEND HERE
BEND HERE
BEND HERE
CENTER SPACER
LEFT
OR RIGHT
LEFT
OR RIGHT BEND HERE
Figure 6.3 Finishing Trim
Figure 6.5 Finishing Trim Installed
4. Two passive heat plenums are included with the kit
and both must be installed with the PRIMO appliance
or the appliance will overheat. The plenums are placed
into the framed opening from inside the chase.
WARNING! Risk of Fire! Two plenums MUST be in-
stalled for passive heat to function correctly. Overheating
of appliance and combustible materials will occur.
5. Position the rst plenum into the wall by turning verti-
cally to clear the studs. See Figure 6.6.
Figure 6.6 Turn Plenum Vertically to Clear Framing Studs
6. Turn plenum back to horizontal orientation and tilt to
bring bottom nailing tabs through the opening rst.
Rotate the plenum forward to get the top nailing tabs
through. See Figures 6.7, 6.8, and 6.9.
Figure 6.4 Break and Bend Finishing Trim
DETAIL A - FRONT DETAIL B - BACK
3. Install the left and right nishing trim pieces on the
framing on the sides of the discharge opening using
construction screws or nails as shown in Figure 6.5,
Detail A and B. Notice that the screws are installed
on the back side of the framing. See Figure 6.15 and
Figure 6.20.
DETAIL A
DETAIL C
DETAIL B

16 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 6.7 Rotate Plenum to Horizontal Orientation
7. Position the plenum adjacent to the nishing trim piece
on the framing as shown in Figure 6.8 and Figure 6.9.
The notches in the nailing tabs denote the height of
the plenum and are to be lined up with the edge of the
header as shown in Figure 6.10. Mount the plenum
into the wall using drywall framing screws or nails.
See Figure 6.11.
Figure 6.9 Position Plenum
Figure 6.10 Secure Nailing Tabs
Figure 6.11 Plenum Secured in Place
Note: The two plenums must be touching each other in
the center of the opening in order for the trim to t properly.
See Figure 6.12.
8. Place the second plenum into position so that it sits
side by side with the other plenum. The two plenums
must be centered left to right in the framed opening.
Figure 6.12 Plenums Contact Each Other
PLENUMS CONTACT EACH OTHER
Figure 6.8 Place Plenum From Inside of the Chase
Note: Finishing trim pieces not installed on all photos.

17
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
Figure 6.16 Install Collar to Bottom of Plenum
WARNING! Risk of Fire! DO NOT fold/kink/pinch/ob-
struct 6 inch exible ducts. Overheating of appliance and
combustible materials will occur. Figure 6.17 Install Flex Venting to Collar on Bottom of Plenums
10. Bend the edge of the left and right side trim pieces
over for a reference on where to cut the drywall. See
Figure 6.15.
11. Install one collar to bottom side of each plenum us-
ing hurricane screws provided in the kit. See Figure
6.16.
12. Cut ex venting to appropriate length to run from top
of appliance to the bottom of the plenum. Ensure
there are no kinks. See Figure 6.17 and Figure 6.18.
Figure 6.15 Bend Side Trim Piece
BEND SIDE TRIM PIECE
9. Insert the center nishing trim piece between the two
plenums. See Figure 6.13 and 6.14.
Figure 6.13 Insert Center Finishing Trim Piece
CENTER FINISHING TRIM PIECE
Figure 6.14 Insert Center Finishing Trim Piece
COLLAR

18 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
13. Secure ex venting to collars on both the appliance
and the bottom of the plenum using the provided gear
clamps. See Figure 6.18 and Figure 6.20.
Figure 6.18 Install Flex Venting to Appliance
Figure 6.20 Flex Vent Installed with No Kinks
BACK SIDE: LOCATION OF
FINISHING TRIM PIECE
(See Figure 6.5.)
14. Install self-tapping screw through gear clamp into col-
lar. Repeat for all collars. See Figure 6.19
Figure 6.19 Install Screw into Collar
SCREW
WARNING! Risk of Fire! DO NOT fold/kink/pinch/
obstruct 6 inch exible ducts. Appliance and combustible
materials could overheat.

19
Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
WARNING! Risk of Fire! DO NOT block passive heat
registers! Overheating of appliance and combustible
materials will occur.
Finishing Instructions - Front Discharge
1. Apply wall sheathing material up to 1/2 inch thick up to
the edge of the plenum. See Figure 6.21.
Figure 6.21 Wall Sheathing Installed
NO WALL SHEATHING MATERIAL BEYOND THIS LINE
NO WALL SHEATHING MATERIAL BEYOND THIS LINE
2. Install trim kit (PHTRIM-PRIMO-48 or PHTRIM-
PRIMO-60) as instructed.
3. Continue to Wiring Section.
WARNING! Risk of Overheating! DO NOT apply wall
sheathing past outside edge of plenum. Overheating of
appliance and combustible materials will occur.

20 Heat & Glo • PHFR-PRIMO-48, PHFR-PRIMO-60, PHSI-PRIMO Instructions • 2560-970 Rev. D • 2/19
7. Installation and Finishing - Side Discharge
1. Remove the two outer passive heat seal plates. See
Figure 7.1 and Figure 7.2. Install collars over the
openings using hurricane screws provided in the kit.
WARNING! Risk of Fire! DO NOT remove HEAT-
OUT-PRIMO seal plates. Overheating of appliance
and combustible materials will occur.
WARNING! Risk of Overheating! Both passive heat
side discharge assemblies included with kit MUST be
installed and operational. Overheating of appliance and
combustible materials will occur.
2. Place the side discharge assembly into the wall with
the arrows on the nailing tabs facing upward. See
Figure 7.3. The height of the side discharge assem-
bly is denoted by the notches in the nailing tabs that
are to be lined up with the edge of the header closest
to the side discharge assembly. Ensure the side dis-
charge assembly is centered in the wall. Mount side
discharge assemblies into wall using drywall framing
screws or nails.
3. Repeat Step 2 to install the second side discharge
assembly on the other side of the appliance.
Figure 7.1 PRIMO Passive Heat Side Discharge Configuration / Remove PRIMO Passive Heat Seal Plates
PASSIVE-HEAT-PRIMO Collar PASSIVE-HEAT-PRIMO Collar
PASSIVE-HEAT-PRIMO
(Side Discharge*)
PASSIVE-HEAT-PRIMO
(Side Discharge*)
*The Front Discharge option, Side Discharge option or Open Top Chase option
may be installed. Installing more than one option is not allowed.
DO NOT
REMOVE
KNOCKOUTS
PASSIVE HEAT PRIMO COLLAR LOCATION
LEFT AND RIGHT SIDES
SQUARE
VENT
PIPE GASKET
HEAT-OUT-PRIMO
SEAL PLATES
Install Assemblies and Flexible Duct - Side Discharge
Figure 7.2 Remove PRIMO Passive Heat Seal Plates