Bosch SSB1000 TL - Page 14

6720866942 (2018/06) US SSB
14 | Installation
SUPPLY
RETURN
AIR
FLUE
GAS
A
H
J
K
I
L
B
E
C
F D
G
Fig. 11 SSB 1000 TL Cascade Installation
The cascade installation of TL boilers should be carried out according to the following procedure (example: 2 boilers):
[1] Set the position of one of the two boilers, connecting it to the system supply/return pipe;
[2] Using a jackpallet, move the second boiler close to the rst one, with a gap not less than 4ft;
[3] Insert the component A (item [9] on Fig. 2) on the venting manifold of the rst boiler. Do the same with component B (item [8] on Fig. 2) on the air
hole, only in case of sealed combustion installation type;
[4] Insert the component C (item [6] on Fig. 2) on the condensate manifold of the rst boiler. Do the same with component D (item [7] on Fig. 2) on the
relief valves drain manifold;
[5] Still using a jackpallet, move closer the second boiler, aligning it to the components just installed on the rst boiler;
[6] When the gap between the boilers is approximately 4 to 8in., insert two bolts in the lower holes of the 5” supply header, two bolts in the lower holes of
the 5” return header and two bolts in the lower holes of the 3” gas manifold;
[7] Put the seals E, F and G carefully, in vertical position, on top of the bolts;
[8] Progressively close the gap between the boilers, using the jackpallet, checking the seals stay in proper position;
[9] Push the second boiler against the rst one until the gap is approximately 1in.;
[10] Insert all remaining bolts and tighten them rmly with the relevant nuts;
[11] Add all relevant caps and blank anges on the free sides of the boilers (components H, I, J, K and L on Fig. 11), with their seals;
[12] Insert the boiler supply temperature sensor (available pre-wired into the electrical box of each boiler) on one of the two wells available on each supply
header (select the proper well according to the water ow direction);
[13] Connect the bus cable (item [12] of Fig. 2) between the CASCADE LINK connections available on each Low voltage terminal strip;
[14] Complete the installation connecting the water, gas venting, condensate, relief valves, air (in case of sealed combustion) pipes.