PSG PA08550 User manual

45392A
05-06-2015
INSTALLATION OF THE OPTIONAL
HOT WATER LOOP KIT FOR PRE-
HEATING OF DOMESTIC WATER
(PA08550)
MAX CADDY FURNACE

This option can be installed on either side of your Max Caddy furnace.
It is important to note that this option requires a 60 gallons buffer tank.
For installation on the right hand side, follow steps 1 to 5 of section 1.
For installation on the left hand side, follow steps 1 to5 of section 2.
Section 1
Short bracket
Screw
Step 1: Remove the screw
located on the left of the
assembl as shown on
figure 1. Keep this screw to
install the “short” bracket
supplied in the hardware kit
as per figure 2.
INSTALLATION OF THE HOT WATER LOOP KIT FOR PRE-HEATING OF DOMESTIC
WATER ON THE RIGHT HAND SIDE
Figure
1
Figure
2

Screws (12x)
Right panel
Water loop assembly
Step 2: Remove the right panel as
shown in figure 3 and save the
screws for step 5.
Step 3
:
Slide the
hot
water loop
assembl into the furnace,
between the firebox and the heat
exchangers. It is important that
the assembl be centered on the
top of the firebox to ensure its
stabilit and safe installation.
(Figure 4)
Figure
3
Figure
4

Short bracket
Grommets (2x)
Cut view
showing position of
the hot water loop above the
fire box. (Figure 5)
Step 4
: Remove the knock
-
outs from
the right side panel and install the
grommets in the holes as shown on
figure 6.
Figure
5
Figure
6

Right panel
Screws (12x)
Water outlet
Water inlet
Step 5: Insert then slide the inlet and
outlet tubes of the assembl through the
grommets and secure the panel to the
furnace using the screws removed in
step 2. (Figure 7)
Identif the water inlet (lowest tube)
and outlet (highest tube) for installation
purposes. (Figure 8)
Diagrams for the hot water loop kit
mechanical and electrical connection are
included at the end of this document.
Connections shoul be performe by a
qualifie professional.
Figure
8
Figure
7

Section 2
Screw
Long bracket
Step 1: Remove the screw
located on the left of the
assembl as shown on
figure 9. Keep this screw to
install the “Long” bracket
supplied in the hardware
kit as per figure 10.
INSTALLATION OF THE HOT WATER LOOP KIT FOR PRE-HEATING OF
DOMESTIC WATER ON THE LEFT HAND SIDE
Figure
10
Figure
9

Screws (12x)
Left panel
Water loop assembly
Step
2
: Remove the left panel as shown
in
figure 11 and save the screws for step 5.
Step 3
:
Slide the
hot
water loop
assembl into the furnace,
between the firebox and the heat
exchangers. It is important that
the assembl be centered on the
top of the firebox to ensure its
stabilit and safe installation.
(Figure 12)
Figure
11
Figure
12

Long bracket
Grommets (2x)
Cut view of the inside of the
furnace with the hot water loop
kit centered above the firebox.
(Figure 13)
Step 4
: Remove the knock
-
outs f
rom
the left side panel and install the
grommets in the holes as shown in
figure 14.
Figure
13
Figure
14

Water inlet
Water outlet
Left panel
Screws (12x)
Step 5
:
Insert then slide the inlet and
outlet tubes of the assembl through the
grommets and secure the panel to the
furnace using the screws removed in
step 2. (Figure 15)
Identif the water inlet (lowest tube)
and outlet (highest tube) for installation
purposes. (Figure 16)
Diagrams for the suggested hot water
loop kit mechanical and electrical
connection are included at the end of
this document.
Connections shoul be performe by a
qualifie professional.
Figure
15
Figure
16

WARNING
TO AVOID RISK OF DAMAGE IN CASE OF WATER OVERHEATING, YOU MUST USE COPPER PIPES
TO MAKE THE CONNECTIONS BETWEEN THE TEMPERING TANK AND THE HOT WATER LOOP
KIT FOR PRE-HEATING OF DOMESTIC WATER, FOR BOTH THE INPUT AND OUTPUT OF THE
WATER LOOP ASSEMBLY.
F LO O R DR AIN
H OT W AT ER
IT IS V ER Y IM P O RT AN T T O
M A IN T AIN AN AS CE ND IN G
SL OP E O F 2 IN C HES PER
FO O T O N TH E P IP E C O NNECTING
TH E FUR NACE TO THE BU FFER TA N K
C OLD W ATE RSU PPLY T EM P ER IN G TA NK 210F /120LB S
O NE W A Y VA LV E
PR ESSURE G AGE
RELIE F VALVE
DR A IN VALVE M A IN W A TE R HEA TER
RELIEF VALVE
W AT ER LO OP
INLET
OUTLET
W AT ER L OO P
VALVE
SO LENOID
CONNECTION DIAGRAM FOR THE OPTIONAL HOT WATER LOOP KIT FOR PRE
-
HEATING
OF
DOMESTIC WATER
IT IS VERY IMPORTANT TO MAINTAIN AN ASCENDING SLOPE OF 2 INCHES PER FOOT
ON THE PIPE CONNECTING THE FURNACE TO THE TOP INLET ON THE BUFFER TANK.
THE BUFFER TANK USED MUST HAVE A CAPACITY OF 60 GALLONS.

WIRING DIAGRAM
WE RECOMMEND TO INSTALL A 24 VAC, MAXIMUM 200Ma, NORMALLY OPENED
SOLENOID VALVE ON THE INLET OF THE HOT WATER LOOP KIT TO PREVENT COLD
WATER FROM CIRCULATING IN THE FURNACE WHEN NOT IN USE. CONNECT THE VALVE
TO THE ‘’WATR SOLN’’ PORT LOCATED ON THE LEFT SIDE IN THE FURNACE’S CONTROL
BOARD.
This port will be energised when the temperature in the plenum reaches 49 °C (120° F).