ELM DISTRIBUTION SOLAR POOL HEATING INSTALLATION MANUAL SAVE INSTALLATION TIME AND AVOID CALL-BACKS

ELM DISTRIBUTION SOLAR POOL HEATING INSTALLATION MANUAL SAVE INSTALLATION TIME AND AVOID CALL-BACKS
ELM DISTRIBUTION SOLAR
POOL HEATING INSTALLATION
MANUAL
SAVE INSTALLATION TIME AND AVOID CALL-BACKS
READ THIS MANUAL BEFORE MOUNTING COLLECTORS
Manual Contents
This manual provides a detailed step-by-step procedure for the installation of an ELM
Distribution Solar Pool Heating System. If the directions are followed correctly and
only recommended ELM Distribution hardware and components are used, the installed
system should provide years of trouble free service, savings, and enjoyment.
CAUTION:
! SOLAR COLLECTORS ARE OFTEN INSTALLED ON THE ROOFS OF
BUILDINGS. UNLESS YOU ARE VERY FAMILIAR WITH WORKING ON ROOFS
AND HAVE THE PROPER LADDERS AND SAFETY EQUIPMENT FOR SUCH WORK,
YOU SHOULD HIRE SOMEONE WITH THE NECESSARY EXPERIENCE TO DO THE
INSTALLATION. FAILURE TO OBSERVE SAFE PRACTICES ON A ROOF OR OTHER
ELEVATED STRUCTURE MAY RESULT IN FALLING, LEADING TO SERIOUS
INJURY TO YOU.
C HAPTER 1
Mounting Components
C HAPTER 1: M OUNTING C OMPONENTS
Contents
*. Overview
1.Collector Installation Kit
2.System Kit
3.Hold-Down Strap
4.Add-a-Row Kit
5.Row Spacer Kit
6.Aluminum Outlet Header Clamp Assembly
7.Double Hole Outlet Header Bracket
8.Optional Supplemental High Wind Area Collector Hold-Down Kit
9.Black Hose Clamps
10.Collector Repair Plug
3
C HAPTER 1: M OUNTING C OMPONENTS
Overview
! This section provides descriptions and part numbers of the ELM Distribution Installation Kits required for each
solar pool heating system.
! The mounting location of each kit
component is shown by the corresponding
circled number in the ‘Mounting
Components’ diagram.
I NTERACTIVE 1.1 Mounting Components
2) System Kit
1) Collector Installation Kit
7) Double Hole Outlet Header Bracket
3) Hold-Down Strap
6) Aluminum Header
Clamp Assembly
4) Add-a-Row Kit
5) Row Spacer Kit
1
2
3
4
5
6
7
4
C HAPTER 1: M OUNTING C OMPONENTS
1) Collector Installation Kit
! Part #12034-1 for 1 1/2” kit; #12034-2 for 2” kit !
! Contains the parts needed to fasten a single solar collector to a supporting surface and to make
water connections from one collector to another. Hold-Down Strap is not included and must be
ordered separately.
! Use one (1) kit per collector.
!!
! !
Part No !
Qty 1 1/2” ! Qty 2” Description
!!
10008-1 !
1!!
!!
10008-2 !
__ !
1 !
Outlet Header Hold-Down Bracket Assembly
!!
50006 !
2 !!
2 !
Hold-Down Strap Bracket
!!
60690-1 !
2! !
__ ! Collector Connector Hose (3 3/4” long)
!!
60690-2 !
__ !
2 !
!!
60003-1 !
4 !!
__ ! Hose Clamp, Stainless Steel
!!
60003-2 !
__ !
4 !
__ ! Outlet Header Hold-Down Bracket Assembly
Image 1.1 Collector Installation Kit
Collector Connector Hose (3 3/4” long)
Hose Clamp, Stainless Steel
Go to: Chapter 1 Home Page.
5
C HAPTER 1: M OUNTING C OMPONENTS
2) System Kit
! Part #12135-1 for 1 1/2” kit; #12135-2 for 2” kit
! Contains additional hold-down hardware, connection parts and adapters needed to complete
water connections from the collectors to the system feed and return line. The pipe adapters that
connect the system piping to the collectors are high temperature CPVC.
! Use one (1) kit per system.
! !
Part No !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
10003-1 !
10003-2 !
10008-1 !
10008-2 !
10011 !
10035-2!
12035-1!
12035-2!
30061-1 !
30061-2 !
30089-1 !
30089-2 !
50006 !
60691-1 !
60691-2 !
60003-1 !
60003-2 !
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
!
Qty 1 1/2” Qty 2” Description
1 !!
__ ! !
1 !!
__ !
4 !!
1! !
1! !
__! !
1 !!
__ !
2 !!
__ !
2 !!
2 !!
__ !
4 !!
__ !
__ ! Vacuum Relief Valve
1 ! Vacuum Relief Valve
__ ! Outlet Header Hold-Down Bracket Assembly
1 ! Outlet Header Hold-Down Bracket Assembly
4 ! Hold-Down Strap Clamp Assembly
1! Collector Hold Down Strap
__! High Wind Hold-Down Kit
1! High Wind Hold-Down Kit
__ ! End Cap
1 ! End Cap
__ ! Pipe Adapter
2 ! Pipe Adapter
2 ! Hold-Down Strap Bracket
__ !System Connector Hose (7” long)
2 ! System Connector Hose (7” long)
__ !Hose Clamp, Stainless Steel
4 ! Hose Clamp, Stainless Steel
Image 1.2 System Kit
Go to: Chapter 1 Home Page.
6
C HAPTER 1: M OUNTING C OMPONENTS
3) Hold-Down Strap
! Part #10035-1 for 54’; #10035-2 for 107’; #10040 for 1400’
! Required to secure collectors to the mounting surface. Use strap #10035-1 (54 ft) for rows of up to
6 collectors with two straps or #10035-2 (107 ft) for rows of up to 12 collectors with two straps.
Additional strap is required when using Optional Supplemental High Wind Area Collector HoldDown Kit. Available in bulk, #10040 (1400 ft. roll.)
Image 1.3 Hold-Down Strap
Go to: Chapter 1 Home Page.
7
C HAPTER 1: M OUNTING C OMPONENTS
4) Add-a-Row Kit
! Part #12043-1 for 1 1/2” kit; #12043-2 for 2” kit
! Used when more than one row of collectors is to be installed. The kit contains additional holddown hardware, connecting parts, and adapters.
! Use one (1) kit for each collector row after the first.
! !
Part No !
Qty 1 1/2” ! Qty 2”
Description
!!
10003-1 !
1!
__!
Vacuum Relief Valve
!!
10003-2 !
__!
1!
Vacuum Relief Valve
!!
10008-1 !
1!
__!
Outlet Header Hold-Down Bracket Assembly
!!
10008-2 !
__!
1!
Outlet Header Hold-Down Bracket Assembly
!!
10011 !
4!!
4!
Hold-Down Strap Clamp Assembly
!!
30061-1 !
1!
__!
End Cap
!!
30061-2!
__!
1!
End Cap
!!
30089-1 !
2!
__!
Pipe Adapter
!!
30089-2 !
__!
2!
Pipe Adapter
!!
50006 !
2!
2!
Hold-Down Strap Bracket
!!
60691-1 !
2!
__!
System Connector Hose (7” long)
!!
60691-2 !
__!
2!
System Connector Hose (7” long)
!!
60003-1 !
4!
__!
Hose Clamp, Stainless Steel
!!
60003-2 !
__!
4!
Hose Clamp, Stainless Steel
Image 1.4 Add-a-Row Kit
Go to: Chapter 1 Home Page; Special Systems Layout.
8
C HAPTER 1: M OUNTING C OMPONENTS
5) Row Spacer Kit
! Part #12017-1 for 1 1/2” kit; #12017-2 for 2” kit
! Used when a row of collectors must be interrupted by a space to allow for obstructions such as a
chimney or roof vent. It contains the hardware needed to space around any width obstructions by
connecting appropriate lengths of PVC pipe to the pipe adapters at the inlet and outlet headers of
the two collectors on either side of the obstructions.
! Use one (1) for each gap between collectors
! Use when required.
Qty 1 1/2” ! Qty 2”
Image 1.5 Row Spacer Kit
! !
Part No !
!!
10008-1!
!!
10008-2 !
__ !
1 !
Outlet Header Hold-Down Bracket Assembly
!!
10011!!
4!!
4 !
Hold-Down Strap Clamp Assembly
!!
30089-1!
4 !
__ ! Pipe Adapter
!!
30089-2!
__ !
4 !
Pipe Adapter
!!
50006!
2 !
2 !
Hold-Down Strap Bracket
!!
60690-1!
2 !
__ !
Collector Connector Hose (3 3/4” long)
!!
60690-2!
__ !
2 !
Collector Connector Hose (3 3/4” long)
!!
60003-1 !
4 !!
__ ! Hose Clamp, Stainless Steel
!!
60003-2 !
__ !
4 !
1!
Description
__ ! Outlet Header Hold-Down Bracket Assembly
Hose Clamp, Stainless Steel
Go to: Chapter 1 Home Page; Mounting the Solar Collectors;
Installation Over Roof Vent Pipes; Special Systems Layout.
9
C HAPTER 1: M OUNTING C OMPONENTS
6) Aluminum Outlet Header Clamp Assembly
! Part #10117-1 for 1 1/2”; #10117-2 for 2”
! Used as supplemental outlet header mounting in conjunction with the Outlet Header Hold-Down
Bracket assembly, Part #10008-1. The bracket is designed for installations that require more
flexibility for the outlet header mounting hardware location, such as barrel tile roofs or
installations that require additional mounting.
Image 1.6 Aluminum Outlet Header Clamp Assembly
Go to: Chapter 1 Home Page; Step Seven.
10
C HAPTER 1: M OUNTING C OMPONENTS
7) Double Hole Outlet Header Bracket
! Part #50069
! May also be used to terminate a strap run in high wind areas where extra hold-down strength is
required.
Image 1.7 Double Hole Outlet Header Bracket
Go to: Chapter 1 Home Page.
11
C HAPTER 1: M OUNTING C OMPONENTS
8) Optional Supplemental High Wind Area Collector
Hold-Down Kit
! Part #12035-1 for 1 1/2”, #12035-2 for 2”
! Used in addition to the basic collector installation kit in regions where high winds are prevalent.
! Requires twice the amount of Hold-Down Strap.
Image 1.8 Optional Supplemental High Wind Area
Collector Hold-Down Kit
Go to: Chapter 1 Home Page; Installation in High Wind Areas.
12
C HAPTER 1: M OUNTING C OMPONENTS
9) Black Hose Clamps
! Part #60548-1 for 1 1/2”; #60548-2 for 2”
! Our standard stainless steel hose clamps with an aesthetic black, durable electrostatically applied
powder-paint coating.
Image 1.9 Black Hose Clamps
Go to: Chapter 1 Home Page.
13
C HAPTER 1: MOUNTING COMPONENTS
10) Collector Repair Plug
! Part # 30143
! Used as an easy and permanent on site repair of a collector by isolating the leaking riser tube.
Image 1.10 Collector Repair Plugs
Go to: Chapter 1 Home Page; Repair Plug.
14
C HAPTER 2
Mounting the Solar Collectors
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Contents
*. Overview
1. Outlet Header Bracket Locations
2. Drill Along Chalkline
3. Outlet Header Bracket Sealant
4. Hold-Down Strap Bracket Locations
5. Install Hose
6. Install Outlet Header Bracket with Hose
7. Header Clamp Assembly
8.Install Hold-Down Strap Bracket
9. Install Strap
10.Install Vacuum Relief Valve
11.Install End Cap
12.Final Inspection
13.Installation in High Wind Areas
14.Installation Over Roof Vent Pipes
16
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Overview
! When mounting the collectors, always make provisions for inlet connections at the bottom header and outlet
connections at the top. The outlet headers must be pitched a vertical distance of at least 8” (20cm)
above the inlet headers to assure uniform flow and proper drainage to prevent freezing. The outlet
pipe for each row of collectors must be connected diagonally opposite the inlet pipe. Plan the collector location to
allow at least one foot on all sides of the row(s) of collectors for mounting brackets and piping.
! Roof obstructions, if present, should now be taken into account to determine the exact collector location.
Collectors can be installed over or around different diameter roof vent pipes or other obstructions. After
snapping the top chalk lines but before marking and pre-drilling for your outlet header brackets, refer to the
following instructions:
• With a roof vents up to 2”(50mm) in diameter the collectors can be installed directly over these vents. Locate
the seam in the panel nearest to where the vent pipe is to come through. Separate by pulling up on top plate,
and pushing down on the lower plate. Should the vent pipe protrude near a sonic tack weld, it will have to be
cut apart. Using a sharp utility knife, cut through the weld while pulling the two plates apart. Lay the
collector over the vent pipe, keeping the vent pipe at least 12 inches (30cm) away from a header. It will be
easier to complete an installation by mounting this panel first and then working away from it.
• With a roof vent pipe of 3”(80mm) in diameter, the collectors can be positioned on either side of the vent.
two 7” (18cm) System Connector Hoses (Part #60691-1 for 1 1/2” or #60691-2 for 2”) can be employed to
couple the collectors together for vent pipes or other obstacles up to 7” (18cm) in diameter. Mark your
51” (128cm) centers wherever the outlet header brackets ‘fall’ on the upper chalk line. With obstructions of
over 7”(18cm), such as attic fans and skylights, lay out the panels on either side of the obstructions using a
Row Spacer Kit (Part #12017-1 for 1 1/2”; #12017-2 for 2”).
• Refer to Figure 2 throughout this section. ! !
!
!
!
!
!
!
Return to: Chapter 2 Home Page.
17
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step One: Outlet Header Bracket Location
! Determine the position of the last Outlet Header Hold-Down Bracket for the row of collectors. Mark this point on
the roof. The Collector Outlet Headers will be located 1” (25mm) below this mark.
! Refer to Figure 3.
F IGURE 3 Outlet Header Bracket Location
Return to: Chapter 2 Home Page.
18
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Two: Drill Along Chalkline
! Using this point, snap a chalk line to the opposite end of the row. Slope this line down the roof toward the
inlet approximately 1” (25mm) for each 6 collectors in the row.
! Using a 1/8” (3mm) drill bit (for 1/4” (6mm) diameter screws) drill a hole for the first Outlet Header Bracket on
the first roof mark. Measure up 1” on center from the first pilot hole and drill pilot hole for second screw. Repeat
this process all along the chalk line for the total number of collectors to be installed.
Return to: Chapter 2 Home Page.
19
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Three: Outlet Header Bracket Location
! Inject a generous amount of high quality sealant into each hole and onto the surrounding roof surface. Bolt all the
outlet header Hold-Down Brackets to the roof as shown in Figure 4.
F IGURE 4 Outlet Header Bracket Sealant
Return to: Chapter 2 Home Page.
20
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Four: Hold-Down Strap Bracket Locations
! Locate the Hold-Down Strap Bracket holes using the information in Table 2A shown below, (also shown in Figure
2 Table A). Measuring from the top outlet header bracket chalk line, snap another chalk line parallel to this line
using the “A” dimension. The “B” dimension is the same for all collector sizes, which is 16” (40cm) up from the
outside of the bottom header and can be measured after the collectors are installed. Wait to install the Hold-Down
Strap Brackets until after the collectors are installed so as not to damage the collectors when you are bringing them
to the roof for installation.
T ABLE 2 A Distance Between Panel Headers and Straps
COLLECTOR PANEL SIZE, FEET (M)
12 (3.6)
10 (3.0)
8 (2.4)
6 (1.8)
4 (1.2)
COLLECTOR (A) DISTANCE, INCHES (CM)
60 (152)
48 (122)
36 (91)
24 (60)
---
COLLECTOR (B) DISTANCE, INCHES (CM)
16 (40)
16 (40)
16 (40)
16 (40)
16 (40)
Return to: Chapter 2 Home Page.
21
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Five: Install Hose
! Bring the first collector to the roof and slip the proper hoses over both ends of the inlet and outlet headers on the
last return collector. Make sure that the header with the serial number label is used for the outlet or top header
with the serial number label facing downwards towards the roof. The System Connector Hoses (Part #60691-1 for
1 1/2”; # 60691-2 for 2”), go on the outlet of the last collector and the inlet of the first collector. Locate a Hose
Clamp between the two indicator ridges on the hose. In order to center it over the sealing groove in the header.
This clamp must face up so as to be accessible for tightening and will not rub against the mounting surface.
! Make sure you securely tighten each clamp with a nutdriver. If a nutdriver is not available, a ‘hex’ wrench or
screwdriver will suffice. THE HOSE CLAMPS MUST BE LOCATED BETWEEN THE TWO INDICATOR
RIDGES ON THE HOSE.
! Refer also to Figure 2.
Return to: Chapter 2 Home Page.
22
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Six: Install Outlet Header Bracket with Hose
! Position the collector on the roof so that the center of the outlet connection hoses are directly beneath the secured
outlet header brackets and slip the bracket hold-down clamps over the connection hoses. LIGHTLY TIGHTEN
the clamp around the header hose. Refer to Figure 5.Continue to install all the collectors in the array, coupling
them side to side.
F IGURE 5 Installed Outlet Header Bracket with Hose
Return to: Chapter 2 Home Page.
23
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Seven: Header Clamp Assembly
! If the Aluminum Header Clamp Assembly, Part #10117-1 for 1 1/2”; #10117-2 for 2”, is to be used for supplemental
mounting hardware, install after both the outlet header brackets and the collectors have been installed.
Return to: Chapter 2 Home Page.
24
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Eight: Install Hold-Down Strap Bracket
! Proceed to the lower chalk line previously snapped on the roof for the Hold-Down Strap Brackets. Mark a hole
2” (5cm) to the side of the first collector and continue marking holes on the chalk line centered exactly between the
absorber surfaces until you reach the last collector. Mark the last hole the same 2” (5cm) to the side of the last
collector. Drill a pilot hole and apply sealant at each of these locations. Bolt the Hold-Down Strap Brackets on the
roof. Refer to Figure 6. It is OK to step on the collectors as long as you stay one foot away from the top and bottom
headers. Mark the holes for the bottom Hold-Down Strap by measuring up 16” (40cm) from the outside of the
bottom header and again centering them between the absorbers and 2” (5cm) away from the first and last
collector.
F IGURE 6 Strap Bracket
Return to: Chapter 2 Home Page.
25
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Nine: Install Strap
! Slip one end of a Hold-Down Strap through the slot in the Hold-Down Strap Bracket at the end of the row, then
through the strap clamp and out through the other slot in the Hold-Down Bracket. Pull about 3” (7-8cm) of the
strap through and bend it back toward the clamp. Refer to Figure 7. Slip the loose end of the strap through the
strap clamp and pull it tight. Clamp screw (A) should be tightened securely, but not over-tightened to the point
where the clamp is distorted. Refer to Figure 8. Bring the remaining strap end across the collector face, passing
through both slots in the bracket located on the other side of the collectors. Pull the straps taut against the face of
the collectors. Repeat this procedure for the remaining Hold-Down Strap. Refer to Figure 9.
F IGURE 7 Termination Strap Bracket Assembly
F IGURE 8 Termination Strap Bracket Assembly
F IGURE 9 Strap Bracket with Strap
Return to: Chapter 2 Home Page.
26
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Ten: Install Vacuum Relief Valve
! Install the Vacuum Relief Valve (Part #10003-1 for 1 1/2”; #10003-2 for 2”) in the outlet header of each row. This
will be located at the opposite end of the header that is connected to the collector return line.
! Refer to Figure 2, Figure 10, Figure 11, and Figure 12.
Return to: Chapter 2 Home Page.
27
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Eleven: Install End Cap
! Install an End Cap, (Part # 30061-1 for 1 1/2”; #30061-2 for 2”) in the inlet header of each row, opposite the end
that is connected to the collector inlet pipe.
! Refer to Figure 2, Figure 10, Figure 11, and Figure 12.
Return to: Chapter 2 Home Page.
28
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Step Twelve: Final Inspection
! INSPECT THE INSTALLATION AND CHECK ALL CLAMPS FOR PROPER POSITION AND
TIGHTNESS.
Return to: Chapter 2 Home Page.
29
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Installation in High Wind Areas
! When Installing in High Wind Areas it is recommended to use the Optional Supplemental High Wind Area
Collector Hold-Down Kit, Part #12035-1 for 1 1/2”; #12035-2 for 2”.
! Install an Inlet Header Hold-Down Assembly to each of the panel’s inlet header connection hoses. Stretch the
spring 3/4” to locate the first hole. Using a 1/8” (3mm) drill bit (for 1/4” (6mm) diameter screws) drill a hole for
the first outlet header bracket on the first roof mark. Measure down 1” on center from the first pilot hole and drill
pilot hole for second screw. Insert a generous amount of high quality sealant into each hole and onto the
surrounding roof surface. Tension the bracket’s spring and bolt the bracket securely to the mounting surface.
Repeat this step for the other inlet connection hoses.
! NOTE: DO NOT STRETCH THE SPRING MORE THEN 3/4”. OVER TENSIONING THE SPRING
WHEN THE PANEL IS EXPANDED ON A HOT DAY CAN LEAD TO PANEL DAMAGE WHEN IT
CONTRACTS ON A COOL DAY/NIGHT.
! See Table 2B below and Figure 18 for additional strap bracket locations.
T ABLE 2 B
COLLECTOR PANEL SIZE, FEET (M)
12 (3.6)
10 (3.0)
8 (2.4)
DIMENSION OF (A), INCHES (CM)
32 (81)
28 (71)
20 (51)
Return to: Chapter 2 Home Page.
30
C HAPTER 2: M OUNTING THE S OLAR C OLLECTORS
Installation Over Roof Vent Pipes
!
• If you have the installation flexibility it is easier to locate vent pipes up to 2” between adjacent collectors.
• With a roof vent pipe of 3” (8cm) in diameter, the collectors can be positioned on either side of the vent. Two
System Connector Hoses (Part #60691-1 for 1 1/2”; # 60691-2 for 2”) can be employed to couple the collectors
together for vent pipes or other obstacles up to 7” (17cm) in diameter. Mark your 51” (1.3m) centers wherever the
outlet header brackets ‘fall’ on the upper chalk line.
• With obstructions of over 7” (17cm), such as attic fans and skylights, lay out the collectors on either side of the
obstruction using a Row Spacer Kit (Part #12017-1 for 1 1/2”; #12017-2 for 2”).
! See Diagram or refer to Figure 17 .
Return to: Chapter 2 Home Page.
31
C HAPTER 3
System Piping
C HAPTER 3: S YSTEM P IPING
Contents
*. Overview
1. Flow Rate
2. Reverse Return
3. Direct Return
4. Optional Isolation Valves
5. Collector By-Pass Check Valve
6. Special System Layouts
7. System Below Pool Level
33
C HAPTER 3: S YSTEM P IPING
Overview
• The most common piping configurations use a pressure filter. The pump draws the water from the skimmer and/
or a main drain, forcing it through the filter and sending it back to the pool through the return lines. (other types
please contact factory)
• If a fuel-fired heater or heat pump is installed, it is located between the collector return line and the return line to
the pool. The pipes to and from the solar collectors are connected to the return line to the pool before the water
enters the fuel-fired heater, if one is used.
• Whenever there is more than 40 gpm (151.6l) required flow rate to the collectors or more than 100’ (30m) of
piping used in a system, install 2” (63mm) piping to and from the collectors. Piping to and from the collectors
should be the same type of plastic piping and fittings approved for use with swimming pool filters and pumps. It
is recommended to always use Schedule 40 PVC pipe and fittings.
• Although PVC pipe is generally white, black is also available but may be difficult to find locally. If for aesthetics
black pipe is desired it can always be painted black. Before painting, the PVC pipe must be wiped with cleaner to
remove the glossy surface coating. This will ensure that the paint will not flake off prematurely.
• Use a PVC cutter or a PVC wide-blade saw (not a hacksaw) for cutting pipe. It is important to use both a quality
cleaner/primer and solvent in gluing a PVC joint. Finally, use a cloth while either gluing or painting to keep the
job a clean one.
• Piping should also be supported at intervals of 5’ (1.5m) for horizontal pipe and 8’ (2.5m) for vertical pipe.
! Refer to Figure 10, Figure 11, and Figure 12 throughout this section. !
!
Return to: Chapter 3 Home Page.
34
C HAPTER 3: S YSTEM P IPING
Flow Rate
• In order to receive optimum results from ELM Distribution collectors, the following recommended flow rates and
number of collectors per row should be followed. When the system is running, all the collectors should feel
uniformly cool to the touch, and there should be no residual air left in the pool return lines. If either of these two
conditions persist, chances are that the flow rates thru the collectors are inadequate or the system is not properly
balanced. A flow meter can be installed in the collector feed line to check on the flow rate. If the flow rates are
within the limits as shown below in Table 3A, then the system may not be properly balanced, especially with
systems requiring multiple banks of collectors. Refer to Special System Layouts.
• If the flow rate is below the minimum as shown in the table above, then the pool pump horse power or pipe size
should be increased, or a booster pump installed in some cases. If the flow rate is excessive (more than 10 GPM/
(37.9l ) collector), or if the system pressure is greater than 30 psi, a bypass line should be installed between the
collector feed and return lines above the 3-way valve to prevent problems with the collectors and connection
hoses.
• If there is residual air in the pool return lines and the collectors do feel cool to the touch, refer to the section
concerning the Vacuum Relief Valve Test (Chapter 6 Section 3.)
T ABLE 3 A
COLLECTOR SIZE, FEET:
4 X 12
4 X 10
4X8
STANDARD FLOW RATE PER COLLECTOR, GPM (LTR/MIN)
5.0 (18.9)
4.0 (15.1)
3.25 (12.5)
MINIMUM FLOW RATE PER COLLECTOR, GPM (LTR/MIN)
3.0 (11.4)
2.5 (9.5)
2.5 (9.5)
10; 12
12; 12
12; 14
480; 576
480; 576
480; 576
[email protected];
0.05 @2.5
[email protected];
[email protected]
[email protected];
[email protected]
MAXIMUM # COLLECTORS PER ROW, 1 1/2”; 2”
MAXIMUM SQUARE FOOTAGE PER ARRAY, 1 1/2”; 2”
PRESSURE DROP, [email protected]: 1 1/2”;
2”
Return to: Chapter 3 Home Page.
35
C HAPTER 3: S YSTEM P IPING
Reverse Return
! Refer to Figure 13.
F IGURE 13: Reverse Return
Return to: Chapter 3 Home Page.
36
C HAPTER 3: S YSTEM P IPING
Direct Return
F IGURE 14: Direct Return
! Refer to Figure 14.
T ABLE 3 B Number of Recommended Collectors to Use in a System
COLLECTOR SIZE:
8’
10’
12’
1 1/2”
2”
1 1/2”
2”
1 1/2”
2”
MINIMUM FLOW RATE, (0.06 GPM/FT²)
-
-
-
-
-
-
STANDARD FLOW RATE, (0.10 GPM/FT²)
6
6
6
6
6
6
RECOMMENDED FLOW RATE, (0.15 GPM/FT²)
7
8
7
8
7
7
MAXIMUM FLOW RATE, (10 GPM PER COLLECTOR)
8
12
8
10
8
8
Return to: Chapter 3 Home Page.
37
C HAPTER 3: S YSTEM P IPING
Optional Isolation Valves
• Isolation valves may be installed in the collector piping so that the pool may be operated while the collectors are
being serviced or during freezing weather. Install a manually operated ball valve in the collector inlet line and a
check valve on the collector return line.
• For further pre-cautions in warm climates where pools are operated year round and periodic freezes can occur, a
bypass line (small diameter tubing) can be located above the ball and check valve so as to prevent any accidental
trapping of water in the collectors by the pool owner. To make sure no water is left in the collectors for servicing
or during freezes, remember that the pool pump should be shut off, allowing the collectors to drain naturally,
before the optional isolation valves are used.
• If the system is installed on a commercial or public pool, local codes may require positive isolation valves in the
collector feed and return lines. See Figure 17 A for the proper placement of the isolation check valve and pressure
relief valve.
Return to: Chapter 3 Home Page.
38
C HAPTER 3: S YSTEM P IPING
Collector By-Pass Check Valve
! At high flow rates above the collector’s recommendation, the valve would open to by-pass the water and only send
the recommended flow rate to the system. This is to relieve stresses on the collector system, the system pump,
along with preventing filtration issues.
! Refer to Figure 10A.
F IGURE 10A: Location of Collector By-Pass Check Valve
Return to: Chapter 3 Home Page.
39
C HAPTER 3: S YSTEM P IPING
Special System Layouts
• Use a divided system when installing more than the recommended maximum number of collectors per row, when
avoiding roof obstructions, or where limited space dictates. This provides uniform distribution of water through
all the collectors. If water distribution through the collectors is non-uniform, the heating capacity of the system
will be reduced.
• WHEN INSTALLING A DIVIDED SYSTEM, THE OUTLET HEADERS FROM EACH OF THE
LOWER (OR CLOSEST) ROWS OF COLLECTORS MUST BE CONNECTED TO THE HIGHEST (OR
FURTHEST) POINT IN THE SYSTEM.
! Refer to Figure 12
• A divided system requires an Add-A-Row Kit (Part #12043-1 for 1 1/2”; #12043-2 for 2”) for each additional row
of collectors. This also illustrates the application of the Row Spacer Kit (Part # 12017-1 for 1 1/2”; #12017-2 for
2”) to clear a roof obstruction.
Return to: Chapter 3 Home Page; Chapter 3-Section 2: Flow Rate.
40
C HAPTER 3: S YSTEM P IPING
System Below Pool Level
! Refer to Figure 15.
F IGURE 15: System Below Pool Level
Return to: Chapter 3 Home Page.
41
C HAPTER 4
Control Systems
C HAPTER 4: C ONTROL S YSTEMS
Contents
1.Manual System
2.Automatic Control System
3.Booster Pump System
43
C HAPTER 4: C ONTROL S YSTEMS
Manual System
• Some systems employ a manual control valve to divert the flow of water thru the solar collectors, though this may
reduce the overall heating capacity of the system. A manual control valve usually consists of a non-positively
sealed 3-way valve used in place of the motorized valve as shown in Figure 10 Water continuously flows through
the solar collectors when the filter pump is on, but can be diverted manually by the pool owner if the pool
becomes too warm or during extended cloudy weather. During a threat of freezing conditions it can also be
diverted, by first shutting off the pool pump, allowing the collectors to drain, diverting the 3-way manual valve to
the “bypass collector” position and shutting the isolation valve on the collector feed line. A lower End Cap on the
collectors or any of the connecting hoses can be removed to make sure there is no standing water in the
collectors. The filter pump can then be restarted to allow for normal pool filtration.
! Refer to Figure 11.
! Refer to Manual Systems Start-Up.
Return to: Chapter 4 Home Page.
44
C HAPTER 4: C ONTROL S YSTEMS
Automatic Control System
• The performance of a solar pool heating system can be improved with the use of an electronic control and
motorized 3-way valve. The control activates the motorized valve and either sends water thru the collectors for
heating (or nocturnal cooling) or automatically bypasses the collectors when the pool is warm enough or
insufficient sunlight is available. Refer to the manufacturer’s instructions included with the automatic
control you use.
• During normal operation of the system when the 3-way valve is in the ‘bypass collector’ position all the water in
the collectors should drain back through the 3-way valve (non-positively sealed) when the filter pump shuts off.
An alternate way to protect against sudden freezes can be accomplished by running a bypass line (1/8”-1/4”,
3-6mm) between the collector feed and return line above the isolation valves, if any. It is possible that a small
amount of water may be present in the collectors when a non-positively sealed 3-way valve is used and the filter
pump is on. If a positively sealed 3-way valve is used, a bypass line as mentioned above is mandatory to allow for
collector drainage.
! Refer to Figure 10.
! Refer to Automatic Control Systems Start-Up.
Return to: Chapter 4 Home Page.
45
C HAPTER 4: C ONTROL S YSTEMS
Booster Pump System
Booster Pump System
• In some cases, the pool filter pump may not be able to circulate water at a high enough flow rate to allow for
proper collector operation. If so, it may be necessary to replace the filter pump with a larger one or add a booster
pump. If the pump size is increased, it may also be necessary to upgrade the filter to one with greater flow
ratings.
! Refer to Figure 17.
• If the system is installed on a commercial or public pool, local codes may require positive isolation valves in the
collector feed and return lines. See Figure 17 A for the proper placement of the isolation check valve and pressure
relief valve.
Return to: Chapter 4 Home Page.
46
C HAPTER 5
Other Equipment
C HAPTER 5: O THER E QUIPMENT
Contents
1.Pool Cleaners
2.Chlorinators/ Salt Generators
3.Supplemental Heaters
48
C HAPTER 5: O THER E QUIPMENT
Pool Cleaners
! Some pools employ an automatic pool cleaner. This should be plumbed before the control valve to assure positive
flow to the cleaner at all times. Unless the central system has a cleaner time delay.
! Refer to Figure 10B.
F IGURE 10 B Location of Pool Cleaners
Return to: Chapter 5 Home Page.
49
C HAPTER 5: O THER E QUIPMENT
Chlorinators/Salt Generators
! If the pool uses an automatic chlorinator, this should be plumbed after the outlet tee on the return to the pool.
! Refer to Figure 10 C.
F IGURE 10 C Location of Chlorinator and Salt Generator
Return to: Chapter 5 Home Page.
50
C HAPTER 5: O THER E QUIPMENT
Supplemental Heaters
! Supplemental Gas, Oil-Fired, or Electric Heaters
• It is desirable to pipe the standby heater in a bypass loop. Refer to Figure 10, Figure 11, or Figure 17. Fuel-fired
heaters often create a large pressure drop. By placing a heater in a bypass loop, pump size, and electrical energy
requirements may be reduced.
! Refer to Figure 10D.
F IGURE 10D Location of Supplemental Heater
Return to: Chapter 5 Home Page.
51
C HAPTER 6
System Start-Up, Testing,
and Troubleshooting
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Contents
1.Manual Control Systems
2.Automatic Control Systems
3.Vacuum Relief Valve Test
4.Flow Rates Test Methods
53
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Manual Control Systems
• To test collector operation, follow either the flow-rate or temperature-rise procedure. Divert water through the
collectors. Turn on the pump and either observe flow rate or temperature rise. The flow rate or temperature rise
would be the same as that specified in the “System Start-Up and Test” section. If it is not, then check for the
indicated probable causes and make necessary corrections.
! Refer to Manual Control Systems Overview.
Return to: Chapter 6 Home Page.
54
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Automatic Control Systems
• To check out an automatic system for proper operation turn on the filter system. Set the temperature control to
its highest level. Switch the control to the “Manual ON” mode. The “Heating” or “Solar ON” light should come on.
The 3 way valve will then be sending water thru the collectors, and air will be purged out of the collectors into the
pool return line for several minutes, and should then clear. The collectors should feel uniformly cool to the touch.
Switch the control to the “Manual OFF” mode. The corresponding light will go off and the 3 way valve will be
sending water directly back to the pool, bypassing the solar collectors. After about 5-10 minutes, feel the solar
collectors again. They should have begun to warm up. Now switch to “Auto” or “Solar Enabled”. If the sun is still
shining on the solar collectors, the “Heating” or “Solar ON” light should go on again. Adjust the temperature
control lower.
• When you reach the actual temperature of the pool water, the light will turn off. The “Heating” or “Solar ON”
light will go off again. Move the temperature control to the desired comfort level. The “Heating” or “Solar ON”
light will go back on. For more detailed information on the system startup, trouble shooting and valve/control
installation, follow the manufacturers’ instructions included with the automatic control system.
! Refer to Automatic Control System Overview.
Return to: Chapter 6 Home Page.
55
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Vacuum Relief Valve Test
• When the solar system is first turned on, air in the collectors will be expelled into the pool and bubbles will
appear. The appearance of bubbles in the pool should stop after a few minutes.
• If, after a few minutes, bubbles continue to be discharged at the return to the pool, remove the Vacuum Relief
Valve(s) and replace it with an End Cap. Relocate a Vacuum Relief Valve to a position in the inlet piping which is
at a height of approximately 3/4 of the elevation of the collectors above the pool. Refer to Figure 2.
• A quicker alternate method is to first try to reverse the End Cap and the Vacuum Relief Valve on the collector
array to see if this stops the bubbles in the return lines. This is a lot quicker than cutting in a tee in the supply
pipe.
Return to: Chapter 3-Section 2: Flow Rate; Chapter 6 Home Page.
56
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Flow Rates Test Methods
1. Touch Method
• With the system running and the sun shining, all collectors of the system should be uniformly cool to the
touch, and the system will be operating at optimum performance.
• If the system has been installed according to these instructions, and the collectors connected for diagonal flow
with the reverse return principle, this optimum performance condition will now exist. Systems with rows of
collectors of unequal size, but fitted with balancing valves, may now be adjusted. Open all balancing valves
completely and let the system run for several minutes. The row(s) which feel(s) warmer to the touch than the
other(s), is currently receiving less flow then it should for optimum performance. Throttle the valve(s) of the
other (cooler) row(s) step-by-step, each time waiting for a few minutes, and check the temperature. Once all
rows feel uniformly cool, the system is balanced and operates at optimum performance. Should unexpected
problems be encountered, the flow rate must be checked out more thoroughly.
2.Flowmeter
• The preferred system test method is flow rate. This is also the easiest and quickest method. To check flow rate,
install a flow meter in the inlet line to the collectors (follow installation instructions provided with the
flowmeter).
Return to : Chapter 6 Home Page.
57
C HAPTER 6: S YSTEM S TART -U P , T ESTING , AND T ROUBLESHOOTING
Flow Rates Test Methods Cont.
3. Temperature Rise Test Method
• An alternate test method is temperature rise. To prepare the system for testing, obtain two accurate
thermometers. One of these thermometers is installed in the outlet line from the collectors as shown in
Figure 10. The other is used to check the temperature of the pool water, to compare it with that of the water
leaving the solar collectors. Before installing the thermometer in the outlet line, immerse both
thermometers in the pool water for several minutes to compare the temperature readings. If they are not
identical, make a notation of the difference and add or subtract (as appropriate) this difference to or from
the reading taken while you are testing. This is necessary in order to provide an accurate indication of the
temperature rise of the water passing through the solar collectors.
• Turn the pump on and move the flow switch to the “Manual ON” position. Observe valve action...it should
divert water through the collectors. After flow through the collectors has continued for a least fifteen
minutes, compare the pool water temperature with the temperature of the water flowing through the outlet
line. On an average sunny day, with the air temperature approximately 70°F (40°C) the water leaving the
collectors should be 1° to 7°F (1° to 4°C) higher than that in the pool. If the water rise is greater than this,
insufficient water is flowing through the collectors. This may be caused by a clogged filter, undersized
piping, to many elbows in the piping or an inadequate pump. It is important that the temperature rise
through the collectors be kept as low as possible in order to deliver the maximum amount of heat to the
pool.
Return to: Chapter 6 Home Page.
58
C HAPTER 7
Maintenance
C HAPTER 7: M AINTENANCE
Contents
1. Cold Weather Operation/ Winterizing Procedures
2. Annual Inspection
60
C HAPTER 7: M AINTENANCE
Cold Weather Operation/Winterizing Procedures
• If installed according to this manual, the solar collectors should drain automatically each time the pump cycles
off. There are no special requirements for winterizing the solar collectors. The pool piping should be winterized
as per your normal practice.
• In some parts of the world, pool owners operate their pools throughout the winter although light freezing
conditions may occur. The accepted procedure for avoiding freezing of the pool piping and filtration system has
been to continuously circulate the water.
• When solar heaters are used on a pool under these conditions, anti-freeze precautions should be taken. ELM
Distribution collectors are not normally affected by 40°F freezing. In order to protect the collectors as well as
appurtenant components such as End Caps and pipe fittings and against unusual or severe freezing conditions,
one of the following two procedures should be followed when freezing weather is imminent.
1. Turn circulating system off and allow solar collectors and piping to drain. Isolate collectors with gate or ball
valve in collector feed line and a check valve in the collector return line. Switch the solar control to “OFF” or
“Solar Disabled”. The pool filtering system may then be turned back on. When freezing conditions have
passed, open isolation valve(s) and switch the solar control to “AUTO” or “Solar Enabled”.
2. If isolation valves are not installed in the system, switch the solar control to the “Manual ON” position so
that water circulates through the collectors. When freezing conditions have passed, switch the solar control
to “AUTO” or “Solar Enabled”. THIS METHOD IS NOT RECOMMENDED WHERE
TEMPERATURE LEVELS MAY DROP SEVERELY.
Return to: Chapter 7 Home Page.
61
C HAPTER 7: M AINTENANCE
Annual Inspection
! Annual Service Collector Clamps:
• In particularly hot climates the clamps which are used to connect the solar collectors may become loose. If you
notice leaks around the hose couplings, use a nutdriver to tighten clamps. Do not tighten to the extent that the
pipe collapses or the clamp gears strip.
Return to: Chapter 7 Home Page.
62
C HAPTER 8
Collector Repair
C HAPTER 8: C OLLECTOR R EPAIR
Contents
1. Repair Plug
2. Screw Method
64
C HAPTER 8: C OLLECTOR R EPAIR
Repair Plug
!
! The following instructions are for using Collector Repair Plug, Part # 30143, in order to stop a leak in a collector.
Each leaking tube will require two plugs.
• Locate the leak and mark the tube to be plugged.
• With the pump turned off; using a sharp cutting tool, cut a 1” section out of the tube approximately 2” away
from the header. Repeat on the opposite side of the tube. NOTE: CUT AWAY FROM THE HEADER
REMOVING THE TOP HALF OF THE TUBE. BE CAREFUL NOT TO CUT ADJACENT TUBES.
• Wet the cut out area of the tube and the plug with water. DO NOT USE A LUBRICANT.
• Insert the plug towards the header, narrow side first, use a #0 Phillips Head Screwdriver to completely insert
the plug into the tube. Remove Screw Driver with a twisting motion. Repeat this process with the second plug
on the opposite side of the collector.
• After both plugs have been inserted; test that a seal had been achieved by turning the system on.
Return to: Chapter 8 Home Page.
65
C HAPTER 8: C OLLECTOR R EPAIR
Screw Method
! This method allows for an easy and permanent on site repair of a collector if the leak is at the header where the
riser tube is welded to the header, or a leak is anywhere in the riser tube if the system is located in areas
experiencing frost.
• Using a sharp utility knife, very carefully cut away approximately 1” of the tube at both headers.
• Drive a #10 - #12 sheet metal screw, preferably stainless, into the hole in the header.
• The screw must be between 1/2” and 3/4” long. DO NOT OVERTIGHTEN!
• If the screw strips out, or if the repair leaks, use a larger screw. This repair method will not void the collector
warranty.
! Refer to Figure 16.
Return to: Chapter 8 Home Page.
66
C HAPTER 9
Appendix
C HAPTER 9: A PPENDIX
Contents
Figure 1: Mounting Components Diagram
Figure 2: Assembly on Roof Diagram
Figure 3: Outlet Header Bracket Location
Figure 4: Outlet Header Bracket Sealant
Figure 5: Installed Outlet Header Bracket with
Hose
Figure 6: Strap Bracket
Figure 7: Termination Strap Bracket Assembly
Figure 8: Termination Strap Bracket Assembly
Figure 9: Strap Bracket with Strap
Figure 10: Automatic Plumbing System
!
Schematic
Figure 10A: Location of Collector By-Pass Check
!
!
Valve
Figure 10B: Location of Pool Cleaner
Figure 10C: Location of Chlorinator and Salt
!
!
Generator
Figure 10D: Location of Supplemental Heater
Figure 11: Manual Plumbing System Schematic
Figure 12: Multiple Arrays Plumbed in Parallel
Figure 13: Reverse Return
Figure 14: Direct Return
Figure 15: System Below Pool Level
Figure 16: Collector Repair
Figure 17: Booster Pump System for Outdoor
!
Pools
Figure 17A: Location of Optional Isolation Valves
Figure 18: High Wind Area Additional Strap
!
Bracket Locations
68
C HAPTER 9: A PPENDIX
Figure 1: Mounting Components Diagram
F IGURE 1 Mounting Components Diagram
Return to: Appendix Contents.
69
C HAPTER 9: A PPENDIX
Figure 2: Assembly on Roof Diagram
F IGURE 2 Assembly on Roof Diagram
Return to: Mounting the Solar Collectors Overview; Step Four; Step Five; Step Ten;
Step Eleven; Vacuum Relief Valve Test; Appendix Contents.
70
C HAPTER 9: A PPENDIX
Figure 3: Outlet Header Bracket Location
F IGURE 3 Outlet Header Bracket Location
Return to: Step One; Appendix Contents.
71
C HAPTER 9: A PPENDIX
Figure 4: Outlet Header Bracket Sealant
F IGURE 4 Outlet Header Bracket Sealant
Return to: Step Three; Appendix Contents.
72
C HAPTER 9: A PPENDIX
Figure 5: Installed Outlet Header Bracket with Hose
F IGURE 5 Installed Outlet Header Bracket with Hose
Return to: Step Six; Appendix Contents.
73
C HAPTER 9: A PPENDIX
Figure 6: Hold-Down Strap Bracket
F IGURE 6 Hold-Down Strap Bracket
Return to: Step Eight; Appendix Contents.
74
C HAPTER 9: A PPENDIX
Figure 7: Termination Strap Bracket Assembly
F IGURE 7 Termination Strap Bracket Assembly
Return to: Step Nine; Appendix Contents.
75
C HAPTER 9: A PPENDIX
Figure 8: Termination Strap Bracket Assembly
F IGURE 8 Termination Strap Bracket Assembly
Return to: Step Nine; Appendix Contents.
76
C HAPTER 9: A PPENDIX
Figure 9: Strap Bracket with Strap
F IGURE 9 Strap Bracket with Strap
Return to: Step Nine; Appendix Contents.
77
C HAPTER 9: A PPENDIX
Figure 10: Automatic Plumbing System Schematic
F IGURE 10 Automatic Plumbing System Schematic
Return to: Step Ten; Step Eleven; System Piping; Manual Systems; Automatic Systems;
Supplemental Heaters; Flow Rates Test Methods Cont.; Appendix Contents.
78
C HAPTER 9: A PPENDIX
Figure 10 A: Location of Collector By-Pass Check Valve
F IGURE 10 A Location of Collector By-Pass Check Valve
Return to: Collector By-Pass Valve; Appendix Contents.
79
C HAPTER 9: A PPENDIX
Figure 10 B: Location of Pool Cleaners
F IGURE 10 B Location of Pool Cleaners
Return to: Pool Cleaners; Appendix Contents.
80
C HAPTER 9: A PPENDIX
Figure 10 C: Location of Chlorinators and Salt Generators
F IGURE 10 C Location of Chlorinators and Salt Generators
Return to: Chlorinators/Salt Generators; Appendix Contents.
81
C HAPTER 9: A PPENDIX
Figure 10 D: Location of Supplemental Heater
F IGURE 10 D Location of Supplemental Heater
Return to: Supplemental Heaters; Appendix Contents.
82
C HAPTER 9: A PPENDIX
Figure 11: Manual Plumbing System Schematic
F IGURE 11 Manual Plumbing System Schematic
Return to: Step Ten; Step Eleven; System Piping; Manual Systems;
Supplemental Heaters; Appendix Contents.
83
C HAPTER 9: A PPENDIX
Figure 12: Multiple Arrays Plumbed in Parallel
F IGURE 12 Multiple Arrays Plumbed in Parallel
Return to: Step Ten; Step Eleven; System Piping; Special System Layouts; Appendix Contents.
84
C HAPTER 9: A PPENDIX
Figure 13: Reverse Return
F IGURE 13 Reverse Return
Return to: Reverse Return; Appendix Contents.
85
C HAPTER 9: A PPENDIX
Figure 14:Direct Return
F IGURE 14 Direct Return
Return to: Direct Return; Appendix Contents.
86
C HAPTER 9: A PPENDIX
Figure 15: System Below Pool Level
F IGURE 15 System Below Pool Level
Return to: System Below Pool Level; Appendix Contents.
87
C HAPTER 9: A PPENDIX
Figure 16: Collector Repair
F IGURE 16 Collector Repair
Return to: Screw Method; Appendix Contents.
88
C HAPTER 9: A PPENDIX
Figure 17: Booster Pump System Diagram for Outdoor Pools
F IGURE 17 Booster Pump System Diagram for Outdoor Pools
Return to:Installation Over Roof Vent Pipes; Booster Pump Systems;
Supplemental Heaters; Appendix Contents.
89
C HAPTER 9: A PPENDIX
Figure 17 A: Location of Optional Isolation Valves
F IGURE 17 A Location of Option Isolation Valves
Return to: Optional Isolation Valves; Booster Pump System; Appendix Contents.
90
C HAPTER 9: A PPENDIX
Figure 18: High Wind Area Additional Strap Bracket Location
F IGURE 18 High Wind Area Additional Strap Bracket Locations
Return to: Installation in High Wind Areas; Appendix Contents.
91
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