Warmup WHS-M-S3-Series Installation Manual page 16

Step 2 -
Assembly - Primary Pipework
It is recommended the supply connections to the manifold are direct
from the primary heating circuit, prior to any zone valves or control by
other emitters or devices. Interlock should be established between
the underfloor heating and the heat source. Failure to do so can lead
to instances where the primary supply is not active when it is when
required by the underfloor heating.
The sizing of the primary supply should always be calculated,
properly accounting for the design primary flow rate.
The WHS-M-S3-VALVES have Female 1" G connections to the primary
supply. The pack also includes a pair of 22mm compression fittings,
allowing 22mm pipe to be connected directly to the manifold where
applicable.
NOTE: PTFE or similar should be used to connect the 22mm
compression fittings to the 1" Isolation valve if used.
Configuration with WHS-M-S3-MIX mixing unit
1
• Ensure pipe is fully inserted
into fitting. Hand tighten.
Configuration without mixing unit
1
• Ensure pipe is fully inserted
into fitting. Hand tighten.
16
40
30 50
90 110
20
60
130
70
150
50
10 70
170
32
°F
0 80
°C
20
10
0
2
• Fully tighten using an 31 mm
wrench.
2
• Fully tighten using an 31mm
wrench.
40
30 50
90 110
60
130
70
150
50
70
170
32
°F
80
°C