Technical Data - Grohe Grohsafe 35 237 Manual

Functioning Principle
The Grohsafe pressure balance valve is a
safety mixer designed to compensate for
fluctuations in the water supply pressures,
which would otherwise affect the mixed
water temperature.
This product is supplied with connectors to fit
ø 15mm pipework with inlet connections
apart 150mm. Connection should be hot left,
cold right as viewed from the operating
position. The product is preassembled, as
standard, with the outlet down.
For reversed supply installations refer to
page 10.
Plumbing Systems
Suitable for use with multi-point gas water
heaters or combination boilers with a modu-
lating hot water output. To maintain sufficient
hot water output ensure the combination
boiler temperature setting is on high. Also
suitable for mains pressure unvented and
instantaneous thermal hot water storage
systems.
Not suitable for instantaneous hot water
displacement heaters or gravity-fed plum-
bing systems with an open vented hot water
cylinder and cold water storage cistern.
Supply Pipework
Ensure the supply pipework is thoroughly
flushed before installing the mixing valve.
GROHE recommends installing isolating
valves upstream of the mixing valve for
servicing purposes, and in-line strainers to
prevent the ingress of water borne debris.
New Water Regulations
This GROHE-product is designed to comply
with the current Water Bylaw 17 and the new
Water Regulations covering back-flow pre-
vention. It must be installed in accordance
with local authority bye-laws. Incorrect instal-
lation could contravene bye-law installation
requirements.

Technical Data

Specification
• Exposed single handle pressure balancing
shower valve, concealed supplies, with
shower set.
• Integral non-return valves prevents cross
flow.
• The pressure balance valve cartridge is a
safety mixer and will shut off in the event
of total pressure failure of the hot or cold
water supplies.
• Flow pressure
- min.
- recommended
- greater than 5 bar, fit pressure reducing
valve
• Max. operating pressure
• Max. test pressure
• Flow rate at 3 bar pressure:
• Temperature
- Max. (hot water inlet)
- Recommended (for economy)
- Max. outlet temperature is reached
when handle is turned counter-clock-
wise through 270°.
- Max. outlet temperature can be pre-set
using the adjustable hot water limit stop.
- Temperature accuracy +/- 1 °C with 50%
pressure drop of hot or cold supplies.
• Water connection
- Installation with reversed supplies
possible by rotating the cartridge 180°
6
1 bar
1.5 - 5 bar
10 bar
20 bar
approx. 15.5 l/min
80 °C
60 °C
hot - LH
cold - RH