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SD092750 ISSUE 34
Variheat Commissioning
HEALTH & SAFETY WARNING
As the Heat Pump embodies electrical and rotational equipment it is recommended that ONLY competent
persons carry out any work on this type of machine (see Guarantee).
PEAK LOAD EXHAUST
FAN AVAILABLE
FROM CALOREX
DISTRIBUTORS
AIR THERMOSTAT
POOL
WATER
THERMOSTAT
FILTER
POOL
CIRCULATING
PUMP
*CALOREX LPHW AIR
HEATER BATTERY
MOTORISED VALVE
PUMP
BOILER
MOTORISED VALVE
POOL WATER HEAT
EXCHANGER
(CALORIFIER)
CALOREX
VARIHEAT
MOIST POOL HALL AIR
WARM DRY AIR
WATER FLOW
NOTE: LPHW FEED AND EXPANSION SYSTEM OMITTED FOR CLARITY
* SOME BOILERS REQUIRE A BYPASS- CONSULT
BOILER MANUFACTURERS INSTRUCTIONS
† LPHW - LOW PRESSURE HOT WATER
CALOREX VARIHEAT INSTALLATION WITH FUEL BOILER
MOTORISED VALVE BOILER SYSTEM
Pre-commissioning-all models.
Check installation, electrical, water and ducting
services are in accordance with Calorex
recommendations, i.e.:
Ensure water flow and rate are within design
limits.
Condensate drain connected.
Check interlock to water circulating circuit has
been installed, via voltage free contacts in water
pump starter or flow switch.
Ensure electric supply and fuses are to correct
capacity.
Ensure pool hall air temperature is 20°C
minimum.
Ensure pool water calorifier thermostat is set
slightly lower than variheat water thermostat
Models up to and including 1200
Main electrical supply OFF.
Humidistat to 80%. Pool thermostat to below
required temperature.
1. Switch on main electrical supply-mains lamp
ON-fan runs.
2. Turn down humidistat towards 20%,
compressor operates after 8 minute delay.
NOTE: Machine will only operate correctly
when all service panels are in place.
3. Tum or switch off water circuit, interlock
should operate, unit compressor stops. Fault
lamp ON.
4. Restore water circuit and set humidistat to
required control position; normally 60%.
5. Alter pool thermostat to below pool water
temperature-check unit switches over to air
heating.
6. Set water thermostat to required temperature.
7. Heat pump will not operate correctly with
service panels removed.
Models AW 1400, 1800, 4000
Main electrical supply OFF.
Humidistat to 80%. Pool thermostat to below
required temperature. Remove compressor fuses.
1. Check fan and drive for foreign bodies or transit
damage.
2. Mains supply ON-mains lamp ON.
3. Fan operates-check correct fan rotation; if incorrect on
three phase unit switch off supply-change over two
phases on mains input terminal block-switch on,
recheck fan operation.LEAVE ON FOR 12 HOURS.
4. Switch off-replace compressor fuses.
5. Switch ON-fan operates correctly.
6. Turn humidistat towards 20%, compressor will start
approx. 8 mins later.
7. Turn or switch off water circuit to prove interlock
circuit operates, unit compressor stops. Fault lamp
ON.
8. Restore water circuit and all switches to normal
operation. Humidistat at normal, say 60%. Compressor
will start up after time delay.
9. Alter pool thermostat to below pool water temperature-
check unit switches over to air heating.
10 Set water thermostat to required temperature.
11. Check operation of any additional features Le. Indoor
Control Panel, LPHW heater batteries etc. See pages
24-28.
Models with
A/C
Feature
1. After completing all of above alter air temp thermostat
(in RCU controller located in VH unit) to below pool
hall air temperature-ehecking unit switches on
external RCU machine.
