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10
FLUID CONNECTIONS
NOTE: EXCESSIVE HEAT FROM SOLDERING COPPER PIPES NEAR THE BOILER MAY CAUSE DAMAGE.
1. All plumbing work must comply with the national, state, local & any other applicable codes.
2. Make sure the radiant oor system has been purged & is free of oating debris.
3. The return side (inlet) is on the right side of the unit, the supply side (outlet) is on the left of
the unit.
4. A pressure & temperature relief valve should be installed on the hot water supply side (out-
let) of the unit. (Hydro Smart Pre-Plumbed Panels include pressure relief valve)
5. The boiler is designed for a connection to copper tubing and/or PEX tubing. If soldering the unit
is necessary, please direct the ame away from the housing of the unit to avoid damage.
6. When all plumbing work is completed, check for leaks & take corrective action before pro-
ceeding.
TECHNICAL DATA
WIRING DIAGRAMS
CKT 1
6 4 2
5 3 1
6
5
4
9/10
11/12
3
2
7/8
1
13
6
4
2
5
3
1
14 15
SH-12
SH-12 SH-14, SH-19
24
5 1
4 2
CKT 1
CKT 2
5 1
6
5
4
11/12
9/10
3
2
7/8
1
13
4
2
5
1
14 15
SH-14, SH-19
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